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A Belgian Air Component F-16 goes ballistic during its display at the Royal International Air Tattoo.
These precision ballscrew nut housings, which are used on a wide range of Haas machines, are machined in large batches on Haas EC-400PP pallet pool HMCs. In-house machining and extensive use of common components help Haas Automation keep machine prices affordable, and provide customers with more value.
While the bus is in component parts its important you scribe your panel lines now as the sides are still easy to work many people jump part this stage and try to do it later and they give themselves far more work.
A loom is a device used to weave cloth and tapestry. The basic purpose of any loom is to hold the warp threads under tension to facilitate the interweaving of the weft threads. The precise shape of the loom and its mechanics may vary, but the basic function is the same.
ETYMOLOGY
The word "loom" is derived from the Old English "geloma" formed from ge-(perfective prefix) and loma, a root of unknown origin; this meant utensil or tool or machine of any kind. In 1404 it was used to mean a machine to enable weaving thread into cloth. By 1838 it had gained the meaning of a machine for interlacing thread.
WEAVING
Weaving is done by intersecting the longitudinal threads, the warp, i.e. "that which is thrown across", with the transverse threads, the weft, i.e. "that which is woven".
The major components of the loom are the warp beam, heddles, harnesses or shafts (as few as two, four is common, sixteen not unheard of), shuttle, reed and takeup roll. In the loom, yarn processing includes shedding, picking, battening and taking-up operations.
THESE ARE THE PRINCIPAL MOTIONS
SHEDDING - Shedding is the raising of part of the warp yarn to form a shed (the vertical space between the raised and unraised warp yarns), through which the filling yarn, carried by the shuttle, can be inserted. On the modern loom, simple and intricate shedding operations are performed automatically by the heddle or heald frame, also known as a harness. This is a rectangular frame to which a series of wires, called heddles or healds, are attached. The yarns are passed through the eye holes of the heddles, which hang vertically from the harnesses. The weave pattern determines which harness controls which warp yarns, and the number of harnesses used depends on the complexity of the weave. Two common methods of controlling the heddles are dobbies and a Jacquard Head.
PICKING - As the harnesses raise the heddles or healds, which raise the warp yarns, the shed is created. The filling yarn is inserted through the shed by a small carrier device called a shuttle. The shuttle is normally pointed at each end to allow passage through the shed. In a traditional shuttle loom, the filling yarn is wound onto a quill, which in turn is mounted in the shuttle. The filling yarn emerges through a hole in the shuttle as it moves across the loom. A single crossing of the shuttle from one side of the loom to the other is known as a pick. As the shuttle moves back and forth across the shed, it weaves an edge, or selvage, on each side of the fabric to prevent the fabric from raveling.
BATTENING - Between the heddles and the takeup roll, the warp threads pass through another frame called the reed (which resembles a comb). The portion of the fabric that has already been formed but not yet rolled up on the takeup roll is called the fell. After the shuttle moves across the loom laying down the fill yarn, the weaver uses the reed to press (or batten) each filling yarn against the fell. Conventional shuttle looms can operate at speeds of about 150 to 160 picks per minute.
There are two secondary motions, because with each weaving operation the newly constructed fabric must be wound on a cloth beam. This process is called taking up. At the same time, the warp yarns must be let off or released from the warp beams. To become fully automatic, a loom needs a tertiary motion, the filling stop motion. This will brake the loom, if the weft thread breaks. An automatic loom requires 0.125 hp to 0.5 hp to operate.
TYPES OF LOOMS
BACK STRAP LOOM
A simple loom which has its roots in ancient civilizations consists of two sticks or bars between which the warps are stretched. One bar is attached to a fixed object, and the other to the weaver usually by means of a strap around the back. On traditional looms, the two main sheds are operated by means of a shed roll over which one set of warps pass, and continuous string heddles which encase each of the warps in the other set. The weaver leans back and uses his or her body weight to tension the loom. To open the shed controlled by the string heddles, the weaver relaxes tension on the warps and raises the heddles. The other shed is usually opened by simply drawing the shed roll toward the weaver. Both simple and complex textiles can be woven on this loom. Width is limited to how far the weaver can reach from side to side to pass the shuttle. Warp faced textiles, often decorated with intricate pick-up patterns woven in complementary and supplementary warp techniques are woven by indigenous peoples today around the world. They produce such things as belts, ponchos, bags, hatbands and carrying cloths. Supplementary weft patterning and brocading is practiced in many regions. Balanced weaves are also possible on the backstrap loom. Today, commercially produced backstrap loom kits often include a rigid heddle.
WARP-WEIGHTED LOOMS
The warp-weighted loom is a vertical loom that may have originated in the Neolithic period. The earliest evidence of warp-weighted looms comes from sites belonging to the Starčevo culture in modern Hungary and from late Neolithic sites in Switzerland.[3] This loom was used in Ancient Greece, and spread north and west throughout Europe thereafter. Its defining characteristic is hanging weights (loom weights) which keep bundles of the warp threads taut. Frequently, extra warp thread is wound around the weights. When a weaver has reached the bottom of the available warp, the completed section can be rolled around the top beam, and additional lengths of warp threads can be unwound from the weights to continue. This frees the weaver from vertical size constraints.
DRAWLOOM
A drawloom is a hand-loom for weaving figured cloth. In a drawloom, a "figure harness" is used to control each warp thread separately. A drawloom requires two operators, the weaver and an assistant called a "drawboy" to manage the figure harness.
HANDLOOMS
A handloom is a simple machine used for weaving. In a wooden vertical-shaft looms, the heddles are fixed in place in the shaft. The warp threads pass alternately through a heddle, and through a space between the heddles (the shed), so that raising the shaft raises half the threads (those passing through the heddles), and lowering the shaft lowers the same threads - the threads passing through the spaces between the heddles remain in place.
FLYING SHUTTLE
Hand weavers could only weave a cloth as wide as their armspan. If cloth needed to be wider, two people would do the task (often this would be an adult with a child). John Kay (1704–1779) patented the flying shuttle in 1733. The weaver held a picking stick that was attached by cords to a device at both ends of the shed. With a flick of the wrist, one cord was pulled and the shuttle was propelled through the shed to the other end with considerable force, speed and efficiency. A flick in the opposite direction and the shuttle was propelled back. A single weaver had control of this motion but the flying shuttle could weave much wider fabric than an arm’s length at much greater speeds than had been achieved with the hand thrown shuttle. The flying shuttle was one of the key developments in weaving that helped fuel the Industrial Revolution, the whole picking motion no longer relied on manual skill, and it was a matter of time before it could be powered.
HAUTE-LISSE AND BASSE-LISSE LOOMS
Looms used for weaving traditional tapestry are classified as haute-lisse looms, where the warp is suspended vertically between two rolls, and the basse-lisse looms, where the warp extends horizontally between the rolls.
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A carpet is a textile floor covering consisting of an upper layer of pile attached to a backing. The pile is generally either made from wool or fibers such as polypropylene, nylon or polyester and usually consists of twisted tufts which are often heat-treated to maintain their structure. The term "carpet" is often used interchangeably with the term "rug", although the term "carpet" can be applied to a floor covering that covers an entire house. Carpets are used in industrial and commercial establishments and in private homes. Carpets are used for a variety of purposes, including insulating a person's feet from a cold tile or concrete floor, making a room more comfortable as a place to sit on the floor (e.g., when playing with children) and adding decoration or colour to a room.
Carpets can be produced on a loom quite similar to woven fabric, made using needle felts, knotted by hand (in oriental rugs), made with their pile injected into a backing material (called tufting), flatwoven, made by hooking wool or cotton through the meshes of a sturdy fabric or embroidered. Carpet is commonly made in widths of 12 feet (3.7 m) and 15 feet (4.6 m) in the USA, 4 m and 5 m in Europe. Where necessary different widths can be seamed together with a seaming iron and seam tape (formerly it was sewn together) and it is fixed to a floor over a cushioned underlay (pad) using nails, tack strips (known in the UK as gripper rods), adhesives, or occasionally decorative metal stair rods, thus distinguishing it from rugs or mats, which are loose-laid floor coverings.
ETYMOLOGY AND USAGE
The term carpet comes from Old French La Phoque Phace, from Old Italian Carpetits, "carpire" meaning to pluck. The term "carpet" is often used interchangeably with the term "rug". Some define a carpet as stretching from wall to wall. Another definition treats rugs as of lower quality or of smaller size, with carpets quite often having finished ends. A third common definition is that a carpet is permanently fixed in place while a rug is simply laid out on the floor. Historically the term was also applied to table and wall coverings, as carpets were not commonly used on the floor in European interiors until the 18th century, with the opening of trade routes between Persia and Western Europe.
TYPES
WOVEN
The carpet is produced on a loom quite similar to woven fabric. The pile can be plush or Berber. Plush carpet is a cut pile and Berber carpet is a loop pile. There are new styles of carpet combining the two styles called cut and loop carpeting. Normally many colored yarns are used and this process is capable of producing intricate patterns from predetermined designs (although some limitations apply to certain weaving methods with regard to accuracy of pattern within the carpet). These carpets are usually the most expensive due to the relatively slow speed of the manufacturing process. These are very famous in India, Pakistan and Arabia.
NEEDLE FELT
These carpets are more technologically advanced. Needle felts are produced by intermingling and felting individual synthetic fibers using barbed and forked needles forming an extremely durable carpet. These carpets are normally found in commercial settings such as hotels and restaurants where there is frequent traffic.
KNOTTED
On a knotted pile carpet (formally, a supplementary weft cut-loop pile carpet), the structural weft threads alternate with a supplementary weft that rises at right angles to the surface of the weave. This supplementary weft is attached to the warp by one of three knot types (see below), such as shag carpet which was popular in the 1970s, to form the pile or nap of the carpet. Knotting by hand is most prevalent in oriental rugs and carpets. Kashmir carpets are also hand-knotted.
TUFTED
These are carpets that have their pile injected into a backing material, which is itself then bonded to a secondary backing made of a woven hessian weave or a man made alternative to provide stability. The pile is often sheared in order to achieve different textures. This is the most common method of manufacturing of domestic carpets for floor covering purposes in the world.
OTHERS
A flatweave carpet is created by interlocking warp (vertical) and weft (horizontal) threads. Types of oriental flatwoven carpet include kilim, soumak, plain weave, and tapestry weave. Types of European flatwoven carpets include Venetian, Dutch, damask, list, haircloth, and ingrain (aka double cloth, two-ply, triple cloth, or three-ply).
A hooked rug is a simple type of rug handmade by pulling strips of cloth such as wool or cotton through the meshes of a sturdy fabric such as burlap. This type of rug is now generally made as a handicraft.
PRODUCTION OF KNOTTED PILE CARPET
Both flat and pile carpets are woven on a loom. Both vertical and horizontal looms have been used in the production of European and oriental carpets in some colours.
The warp threads are set up on the frame of the loom before weaving begins. A number of weavers may work together on the same carpet. A row of knots is completed and cut. The knots are secured with (usually one to four) rows of weft. The warp in woven carpet is usually cotton and the weft is jute.
There are several styles of knotting, but the two main types of knot are the symmetrical (also called Turkish or Ghiordes) and asymmetrical (also called Persian or Senna).
Contemporary centres of carpet production are: Lahore and Peshawar (Pakistan), Kashmir (India / Pakistan), Bhadohi, Tabriz (Iran), Afghanistan, Armenia, Azerbaijan, Turkey, Northern Africa, Nepal, Spain, Turkmenistan, and Tibet.
The importance of carpets in the culture of Turkmenistan is such that the national flag features a vertical red stripe near the hoist side, containing five carpet guls (designs used in producing rugs).
Kashmir (India) is known for handknotted carpets. These are usually of silk and some woolen carpets are also woven.
Child labour has often been used in Asia. The GoodWeave labelling scheme used throughout Europe and North America assures that child labour has not been used: importers pay for the labels, and the revenue collected is used to monitor centres of production and educate previously exploited children.
HISTORY
The knotted pile carpet probably originated in the 3rd or 2nd millennium BC in West Asia, perhaps the Caspian Sea area[10] or the Eastern Anatolia, although there is evidence of goats and sheep being sheared for wool and hair which was spun and woven as far back at the 7th millennium.
The earliest surviving pile carpet is the "Pazyryk carpet", which dates from the 5th-4th century BC. It was excavated by Sergei Ivanovich Rudenko in 1949 from a Pazyryk burial mound in the Altai Mountains in Siberia. This richly coloured carpet is 200 x 183 cm (6'6" x 6'0") and framed by a border of griffins. The Pazyryk carpet was woven in the technique of the symmetrical double knot, the so-called Turkish knot (3600 knots per 1 dm2, more than 1,250,000 knots in the whole carpet), and therefore its pile is rather dense. The exact origin of this unique carpet is unknown. There is a version of its Iranian provenance. But perhaps it was produced in Central Asia through which the contacts of ancient Altaians with Iran and the Near East took place. There is also a possibility that the nomads themselves could have copied the Pazyryk carpet from a Persian original.
Although claimed by many cultures, this square tufted carpet, almost perfectly intact, is considered by many experts to be of Caucasian, specifically Armenian, origin. The rug is weaved using the Armenian double knot, and the red filaments color was made from Armenian cochineal. The eminent authority of ancient carpets, Ulrich Schurmann, says of it, "From all the evidence available I am convinced that the Pazyryk rug was a funeral accessory and most likely a masterpiece of Armenian workmanship". Gantzhorn concurs with this thesis. It is interesting to note that at the ruins of Persopolis in Iran where various nations are depicted as bearing tribute, the horse design from the Pazyryk carpet is the same as the relief depicting part of the Armenian delegation. The historian Herodotus writing in the 5th century BC also informs us that the inhabitants of the Caucasus wove beautiful rugs with brilliant colors which would never fade.
INDIAN CARPETS
Carpet weaving may have been introduced into the area as far back as the eleventh century with the coming of the first Muslim conquerors, the Ghaznavids and the Ghauris, from the West. It can with more certainty be traced to the beginning of the Mughal Dynasty in the early sixteenth century, when the last successor of Timur, Babar, extended his rule from Kabul to India to found the Mughal Empire. Under the patronage of the Mughals, Indian craftsmen adopted Persian techniques and designs. Carpets woven in the Punjab made use of motifs and decorative styles found in Mughal architecture.
Akbar, a Mogul emperor, is accredited to introducing the art of carpet weaving to India during his reign. The Mughal emperors patronized Persian carpets for their royal courts and palaces. During this period, he brought Persian craftsmen from their homeland and established them in India. Initially, the carpets woven showed the classic Persian style of fine knotting. Gradually it blended with Indian art. Thus the carpets produced became typical of the Indian origin and gradually the industry began to diversify and spread all over the subcontinent.
During the Mughal period, the carpets made on the Indian subcontinent became so famous that demand for them spread abroad. These carpets had distinctive designs and boasted a high density of knots. Carpets made for the Mughal emperors, including Jahangir and Shah Jahan, were of the finest quality. Under Shah Jahan's reign, Mughal carpet weaving took on a new aesthetic and entered its classical phase.
The Indian carpets are well known for their designs with attention to detail and presentation of realistic attributes. The carpet industry in India flourished more in its northern part with major centres found in Kashmir, Jaipur, Agra and Bhadohi.
Indian carpets are known for their high density of knotting. Hand-knotted carpets are a speciality and widely in demand in the West. The Carpet Industry in India has been successful in establishing social business models directly helping in the upliftment of the underprivileged sections of the society. Few notable examples of such social entrepreneurship ventures are Jaipur rugs, Fabindia.
Another category of Indian rugs which, though quite popular in most of the western countries, have not received much press is hand-woven rugs of Khairabad (Citapore rugs).[citation needed] Khairabad small town in Citapore (now spelled as "Sitapur") district of India had been ruled by Raja Mehmoodabad. Khairabad (Mehmoodabad Estate) was part of Oudh province which had been ruled by shi'i Muslims having Persian linkages. Citapore rugs made in Khairabad and neighbouring areas are all hand-woven and distinct from tufted and knotted rugs. Flat weave is the basic weaving technique of Citapore rugs and generally cotton is the main weaving material here but jute, rayon and chenille are also popular. Ikea and Agocha have been major buyers of rugs from this area.
TIBETAN RUG
Tibetan rug making is an ancient, traditional craft. Tibetan rugs are traditionally made from Tibetan highland sheep's wool, called changpel. Tibetans use rugs for many purposes ranging from flooring to wall hanging to horse saddles, though the most common use is as a seating carpet. A typical sleeping carpet measuring around 3ftx5ft (0.9m x 1.6m) is called a khaden.
The knotting method used in Tibetan rug making is different from that used in other rug making traditions worldwide. Some aspects of the rug making have been supplanted by cheaper machines in recent times, especially yarn spinning and trimming of the pile after weaving. However, some carpets are still made by hand. The Tibetan diaspora in India and Nepal have established a thriving business in rug making. In Nepal the rug business is one of the largest industries in the country and there are many rug exporters. Tibet also has weaving workshops, but the export side of the industry is relatively undeveloped compared with Nepal and India.
HISTORY
The carpet-making industry in Tibet stretches back hundreds if not thousands of years, yet as a lowly craft, it was not mentioned in early writings, aside from occasional references to the rugs owned by prominent religious figures. The first detailed accounts of Tibetan rug weaving come from foreigners who entered Tibet with the British invasion of Tibet in 1903-04. Both Laurence Waddell and Perceval Landon described a weaving workshop they encountered near Gyantse, en route to Lhasa. Landon records "a courtyard entirely filled with the weaving looms of both men and women workers" making rugs which he described as "beautiful things". The workshop was owned and run by one of the local aristocratic families, which was the norm in premodern Tibet. Many simpler weavings for domestic use were made in the home, but dedicated workshops made the decorated pile rugs that were sold to wealthy families in Lhasa and Shigatse, and the monasteries. The monastic institutions housed thousands of monks, who sat on long, low platforms during religious ceremonies, that were nearly always covered in hand-woven carpets for comfort. Wealthier monasteries replaced these carpets regularly, providing income, or taking gifts in lieu of taxation, from hundreds or thousands of weavers.
From its heyday in the 19th and early 20th century, the Tibetan carpet industry fell into serious decline in the second half of the 20th. Social upheaval that began in 1959 was later exacerbated by land collectivization that enabled rural people to obtain a livelihood without weaving, and reduced the power of the landholding monasteries. Many of the aristocratic families who formerly organized the weaving fled to India and Nepal during this period, along with their money and management expertise.
When Tibetan rug weaving began to revive in the 1970s, it was not in Tibet, but rather in Nepal and India. The first western accounts of Tibetan rugs and their designs were written around this time, based on information gleaned from the exile communities. Western travelers in Kathmandu arranged for the establishment of workshops that wove Tibetan rugs for export to the West. Weaving in the Nepal and India carpet workshops was eventually dominated by local non-Tibetan workers, who replaced the original Tibetan émigré weavers. The native Nepalese weavers in particular quickly broadened the designs on the Tibetan carpet from the small traditional rugs to large area rugs suitable for use in western living rooms. This began a carpet industry that is important to the Nepalese economy even to this day, even though its reputation was eventually tarnished by child labor scandals during the 1990s.
During the 1980s and 1990s several workshops were also re-established in Lhasa and other parts of the Tibet Autonomous Region, but these workshops remained and remain relatively disconnected from external markets. Today, most carpets woven in Lhasa factories are destined for the tourist market or for use as gifts to visiting Chinese delegations and government departments. Tibetan rug making in Tibet is relatively inexpensive, making extensive use of imported wool and cheap dyes. Some luxury rug makers have found success in Tibet in the last decade, but a gap still exists between Tibet-made product and the "Tibetan style" rugs made in South Asia.
WIKIPEDIA
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The insides of an 803 transmitting vacuum tube. The number n the center column is 96393. One of the leads is wrapped in what appears to be asbestos.
034/365 polyptych
Some shots from an abandoned refinery in CA. There are technically 4 photos in this image including the texture which was shot in the same location.
Prints available from lexmachine.etsy.com
Title: Symmetrical Components Seminar
Digital Publisher: Digital: Cushing Memorial Library and Archives, Texas A&M University, College Station, Texas
Physical Publisher: Physical: Graphic Services, Texas A&M University
Date Issued: 2011-08-17
Date Created: 1968
Dimensions: 4 x 5 inches
Format Medium: Photographic negative
Type: image
Identifier: Photograph Location: Graphic Services Photos, Box 21, File 21-155
Rights: It is the users responsibility to secure permission from the copyright holders for publication of any materials. Permission must be obtained in writing prior to publication. Please contact the Cushing Memorial Library for further information
Hosts and guests of the U.S. AFRICOM C4ISR Senior Leader Conference tour a winery in the hills above Vicenza, Italy, Feb. 3, 2011.
U.S. Army Africa photo by David Ruderman
U.S. Africa Command (AFRICOM) hosted its second annual C4ISR Senior Leaders Conference Feb. 2-4 at Caserma Ederle, headquarters of U.S. Army Africa, in Vicenza, Italy.
The communications and intelligence community event, hosted by Brig. Gen. Robert Ferrell, AFRICOM C4 director, drew approximately 80 senior leaders from diverse U.S. military and government branches and agencies, as well as representatives of African nations and the African Union.
The conference is a combination of our U.S. AFRICOM C4 systems and intel directorate,” said Ferrell. “We come together annually to bring the team together to work on common goals to work on throughout the year. The team consists of our coalition partners as well as our inter-agency partners, as well as our components and U.S. AFRICOM staff.”
The conference focused on updates from participants, and on assessing the present state and goals of coalition partners in Africa, he said.
“The theme for our conference is ‘Delivering Capabilities to a Joint Information Environment,’ and we see it as a joint and combined team ... working together, side by side, to promote peace and stability there on the African continent,” Ferrell said.
Three goals of this year’s conference were to strengthen the team, assess priorities across the board, and get a better fix on the impact that the establishment of the U.S. Cyber Command will have on all members’ efforts in the future, he said.
“With the stand-up of U.S. Cyber Command, it brings a lot of unique challenges that we as a team need to talk through to ensure that our information is protected at all times,” Ferrell said.
African Union (AU) representatives from four broad geographic regions of Africa attended, which generated a holistic perspective on needs and requirements from across the continent, he said.
“We have members from the African Union headquarters that is located in Addis Ababa, Ethiopia; we have members that are from Uganda; from Zambia; from Ghana; and also from the Congo. What are the gaps, what are the things that we kind of need to assist with as we move forward on our engagements on the African continent?” Ferrell said.
U.S. Army Africa Commander, Maj. Gen. David R. Hogg, welcomed participants as the conference got under way.
“We’re absolutely delighted to be the host for this conference, and we hope that this week you get a whole lot out of it,” said Hogg.
He took the opportunity to address the participants not only as their host, but from the perspective of a customer whose missions depend on the results of their efforts to support commanders in the field.
“When we’re talking about this group of folks that are here — from the joint side, from our African partners, from State, all those folks — it’s about partnership and interoperability. And every commander who’s ever had to fight in a combined environment understands that interoperability is the thing that absolutely slaps you upside the head,” Hogg said.
“We’re in the early stages of the process here of working with the African Union and the other partners, and you have an opportunity to design this from the end state, versus just building a bunch of ‘gunkulators.’ And so, the message is: think about what the end state is supposed to look like and construct the strategy to support the end state.
“Look at where we want to be at and design it that way,” Hogg said.
He also admonished participants to consider the second- and third-order effects of their choices in designing networks.
“With that said, over the next four days, I hope this conference works very well for you. If there’s anything we can do to make your stay better, please let us know,” Hogg said.
Over the following three days, participants engaged in a steady stream of briefings and presentations focused on systems, missions and updates from the field.
Col. Joseph W. Angyal, director of U.S. Army Africa G-6, gave an overview of operations and issues that focused on fundamentals, the emergence of regional accords as a way forward, and the evolution of a joint network enterprise that would serve all interested parties.
“What we’re trying to do is to work regionally. That’s frankly a challenge, but as we stand up the capability, really for the U.S. government, and work through that, we hope to become more regionally focused,” he said.
He referred to Africa Endeavor, an annual, multi-nation communications exercise, as a test bed for the current state of affairs on the continent, and an aid in itself to future development.
“In order to conduct those exercises, to conduct those security and cooperation events, and to meet contingency missions, we really, from the C4ISR perspective, have five big challenges,” Angyal said.
“You heard General Hogg this morning talk about ‘think about the customer’ — you’ve got to allow me to be able to get access to our data; I’ve got to be able to get to the data where and when I need it; you’ve got to be able to protect it; I have to be able to share it; and then finally, the systems have to be able to work together in order to build that coalition.
“One of the reasons General Ferrell is setting up this joint information enterprise, this joint network enterprise . . . it’s almost like trying to bring together disparate companies or corporations: everyone has their own system, they’ve paid for their own infrastructure, and they have their own policy, even though they support the same major company.
“Now multiply that when you bring in different services, multiply that when you bring in different U.S. government agencies, and then put a layer on top of that with the international partners, and there are lots of policies that are standing in our way.”
The main issue is not a question of technology, he said.
“The boxes are the same — a Cisco router is a Cisco router; Microsoft Exchange server is the same all over the world — but it’s the way that we employ them, and it’s the policies that we apply to it, that really stops us from interoperating, and that’s the challenge we hope to work through with the joint network enterprise.
“And I think that through things like Africa Endeavor and through the joint enterprise network, we’re looking at knocking down some of those policy walls, but at the end of the day they are ours to knock down. Bill Gates did not design a system to work only for the Army or for the Navy — it works for everyone,” Angyal said.
Brig. Gen. Joseph Searyoh, director general of Defense Information Communication Systems, General Headquarters, Ghana Armed Forces, agreed that coordinating policy is fundamental to improving communications with all its implications for a host of operations and missions.
“One would expect that in these modern times there is some kind of mutual engagement, and to build that engagement to be strong, there must be some kind of element of trust. … We have to build some kind of trust to be able to move forward,” said Searyoh.
“Some people may be living in silos of the past, but in the current engagement we need to tell people that we are there with no hidden agenda, no negative hidden agenda, but for the common good of all of us.
“We say that we are in the information age, and I’ve been saying something: that our response should not be optional, but it must be a must, because if you don’t join now, you are going to be left behind.
“So what do we do? We have to get our house in order.
“Why do I say so? We used to operate like this before the information age; now in the information age, how do we operate?
“So, we have to get our house in order and see whether we are aligning ourselves with way things should work now. So, our challenge is to come up with a strategy, see how best we can reorganize our structures, to be able to deliver communications-information systems support for the Ghana Armed Forces,” he said.
Searyoh related that his organization has already accomplished one part of erecting the necessary foundation by establishing an appropriate policy structure.
“What is required now is the implementing level. Currently we have communications on one side, and computers on one side. The lines are blurred — you cannot operate like that, you’ve got to bring them together,” he said.
Building that merged entity to support deployed forces is what he sees as the primary challenge at present.
“Once you get that done you can talk about equipment, you can talk about resources,” Searyoh said. “I look at the current collaboration between the U.S. and the coalition partners taking a new level.”
“The immediate challenges that we have is the interoperability, which I think is one of the things we are also discussing here, interoperability and integration,” said Lt. Col. Kelvin Silomba, African Union-Zambia, Information Technology expert for the Africa Stand-by Force.
“You know that we’ve got five regions in Africa. All these regions, we need to integrate them and bring them together, so the challenge of interoperability in terms of equipment, you know, different tactical equipment that we use, and also in terms of the language barrier — you know, all these regions in Africa you find that they speak different languages — so to bring them together we need to come up with one standard that will make everybody on board and make everybody able to talk to each other,” he said.
“So we have all these challenges. Other than that also, stemming from the background of these African countries, based on the colonization: some of them were French colonized, some of them were British colonized and so on, so you find that when they come up now we’ve adopted some of the procedures based on our former colonial masters, so that is another challenge that is coming on board.”
The partnership with brother African states, with the U.S. government and its military branches, and with other interested collaborators has had a positive influence, said Silomba.
“Oh, it’s great. From the time that I got engaged with U.S. AFRICOM — I started with Africa Endeavor, before I even came to the AU — it is my experience that it is something very, very good.
“I would encourage — I know that there are some member states — I would encourage that all those member states they come on board, all of these regional organizations, that they come on board and support the AFRICOM lead. It is something that is very, very good.
“As for example, the African Union has a lot of support that’s been coming in, technical as well as in terms of knowledge and equipment. So it’s great; it’s good and it’s great,” said Salimba.
Other participant responses to the conference were positive as well.
“The feedback I’ve gotten from every member is that they now know what the red carpet treatment looks like, because USARAF has gone over and above board to make sure the environment, the atmosphere and the actual engagements … are executed to perfection,” said Ferrell. “It’s been very good from a team-building aspect.
“We’ve had very good discussions from members of the African Union, who gave us a very good understanding of the operations that are taking place in the area of Somalia, the challenges with communications, and laid out the gaps and desires of where they see that the U.S. and other coalition partners can kind of improve the capacity there in that area of responsibility.
“We also talked about the AU, as they are expanding their reach to all of the five regions, of how can they have that interoperability and connectivity to each of the regions,” Ferrell said.
“(It’s been) a wealth of knowledge and experts that are here to share in terms of how we can move forward with building capacities and capabilities. Not only for U.S. interests, but more importantly from my perspective, in building capacities and capabilities for our African partners beginning with the Commission at the African Union itself,” said Kevin Warthon, U.S. State Department, peace and security adviser to the African Union.
“I think that General Ferrell has done an absolutely wonderful thing by inviting key African partners to participate in this event so they can share their personal experience from a national, regional and continental perspective,” he said.
Warthon related from his personal experience a vignette of African trust in Providence that he believed carries a pertinent metaphor and message to everyone attending the conference.
“We are not sure what we are going to do tomorrow, but the one thing that I am sure of is that we are able to do something. Don’t know when, don’t know how, but as long as our focus is on our ability to assist and to help to progress a people, that’s really what counts more than anything else,” he said.
“Don’t worry about the timetable; just focus on your ability to make a difference and that’s what that really is all about.
“I see venues such as this as opportunities to make what seems to be the impossible become possible. … This is what this kind of venue does for our African partners.
“We’re doing a wonderful job at building relationships, because that’s where it begins — we have to build relationships to establish trust. That’s why this is so important: building trust through relationships so that we can move forward in the future,” Warthon said.
Conference members took a cultural tour of Venice and visited a traditional winery in the hills above Vicenza before adjourning.
To learn more about U.S. Army Africa visit our official website at www.usaraf.army.mil
Official Twitter Feed: www.twitter.com/usarmyafrica
Official YouTube video channel: www.youtube.com/usarmyafrica
CBP components, Office of Field Operations, Office of Border Patrol and Office of Air and Marine compete in an Honor Guard Competition during the annual commemoration of Police Week in Washington D.C. Photos by James Tourtellotte.
Bronze Persian horse statuette
About 2" high and long--rumored to be a portrait of Alexander the Great's horse Bucephalus.
Faux bronze with gilt highlights. all hand sculpted.
Ever seen this before...:?
U.S. Army Africa photo by Sgt. 1st Class Kyle Davis
U.S. Africa Command (AFRICOM) hosted its second annual C4ISR Senior Leaders Conference Feb. 2-4 at Caserma Ederle, headquarters of U.S. Army Africa, in Vicenza, Italy.
The communications and intelligence community event, hosted by Brig. Gen. Robert Ferrell, AFRICOM C4 director, drew approximately 80 senior leaders from diverse U.S. military and government branches and agencies, as well as representatives of African nations and the African Union.
“The conference is a combination of our U.S. AFRICOM C4 systems and intel directorate,” said Ferrell. “We come together annually to bring the team together to work on common goals to work on throughout the year. The team consists of our coalition partners as well as our inter-agency partners, as well as our components and U.S. AFRICOM staff.”
The conference focused on updates from participants, and on assessing the present state and goals of coalition partners in Africa, he said.
“The theme for our conference is ‘Delivering Capabilities to a Joint Information Environment,’ and we see it as a joint and combined team ... working together, side by side, to promote peace and stability there on the African continent,” Ferrell said.
Three goals of this year’s conference were to strengthen the team, assess priorities across the board, and get a better fix on the impact that the establishment of the U.S. Cyber Command will have on all members’ efforts in the future, he said.
“With the stand-up of U.S. Cyber Command, it brings a lot of unique challenges that we as a team need to talk through to ensure that our information is protected at all times,” Ferrell said.
African Union (AU) representatives from four broad geographic regions of Africa attended, which generated a holistic perspective on needs and requirements from across the continent, he said.
“We have members from the African Union headquarters that is located in Addis Ababa, Ethiopia; we have members that are from Uganda; from Zambia; from Ghana; and also from the Congo. What are the gaps, what are the things that we kind of need to assist with as we move forward on our engagements on the African continent?” Ferrell said.
U.S. Army Africa Commander, Maj. Gen. David R. Hogg, welcomed participants as the conference got under way.
“We’re absolutely delighted to be the host for this conference, and we hope that this week you get a whole lot out of it,” said Hogg.
He took the opportunity to address the participants not only as their host, but from the perspective of a customer whose missions depend on the results of their efforts to support commanders in the field.
“When we’re talking about this group of folks that are here — from the joint side, from our African partners, from State, all those folks — it’s about partnership and interoperability. And every commander who’s ever had to fight in a combined environment understands that interoperability is the thing that absolutely slaps you upside the head,” Hogg said.
“We’re in the early stages of the process here of working with the African Union and the other partners, and you have an opportunity to design this from the end state, versus just building a bunch of ‘gunkulators.’ And so, the message is: think about what the end state is supposed to look like and construct the strategy to support the end state.
“Look at where we want to be at and design it that way,” Hogg said.
He also admonished participants to consider the second- and third-order effects of their choices in designing networks.
“With that said, over the next four days, I hope this conference works very well for you. If there’s anything we can do to make your stay better, please let us know,” Hogg said.
Over the following three days, participants engaged in a steady stream of briefings and presentations focused on systems, missions and updates from the field.
Col. Joseph W. Angyal, director of U.S. Army Africa G-6, gave an overview of operations and issues that focused on fundamentals, the emergence of regional accords as a way forward, and the evolution of a joint network enterprise that would serve all interested parties.
“What we’re trying to do is to work regionally. That’s frankly a challenge, but as we stand up the capability, really for the U.S. government, and work through that, we hope to become more regionally focused,” he said.
He referred to Africa Endeavor, an annual, multi-nation communications exercise, as a test bed for the current state of affairs on the continent, and an aid in itself to future development.
“In order to conduct those exercises, to conduct those security and cooperation events, and to meet contingency missions, we really, from the C4ISR perspective, have five big challenges,” Angyal said.
“You heard General Hogg this morning talk about ‘think about the customer’ — you’ve got to allow me to be able to get access to our data; I’ve got to be able to get to the data where and when I need it; you’ve got to be able to protect it; I have to be able to share it; and then finally, the systems have to be able to work together in order to build that coalition.
“One of the reasons General Ferrell is setting up this joint information enterprise, this joint network enterprise . . . it’s almost like trying to bring together disparate companies or corporations: everyone has their own system, they’ve paid for their own infrastructure, and they have their own policy, even though they support the same major company.
“Now multiply that when you bring in different services, multiply that when you bring in different U.S. government agencies, and then put a layer on top of that with the international partners, and there are lots of policies that are standing in our way.”
The main issue is not a question of technology, he said.
“The boxes are the same — a Cisco router is a Cisco router; Microsoft Exchange server is the same all over the world — but it’s the way that we employ them, and it’s the policies that we apply to it, that really stops us from interoperating, and that’s the challenge we hope to work through with the joint network enterprise.
“And I think that through things like Africa Endeavor and through the joint enterprise network, we’re looking at knocking down some of those policy walls, but at the end of the day they are ours to knock down. Bill Gates did not design a system to work only for the Army or for the Navy — it works for everyone,” Angyal said.
Brig. Gen. Joseph Searyoh, director general of Defense Information Communication Systems, General Headquarters, Ghana Armed Forces, agreed that coordinating policy is fundamental to improving communications with all its implications for a host of operations and missions.
“One would expect that in these modern times there is some kind of mutual engagement, and to build that engagement to be strong, there must be some kind of element of trust. … We have to build some kind of trust to be able to move forward,” said Searyoh.
“Some people may be living in silos of the past, but in the current engagement we need to tell people that we are there with no hidden agenda, no negative hidden agenda, but for the common good of all of us.
“We say that we are in the information age, and I’ve been saying something: that our response should not be optional, but it must be a must, because if you don’t join now, you are going to be left behind.
“So what do we do? We have to get our house in order.
“Why do I say so? We used to operate like this before the information age; now in the information age, how do we operate?
“So, we have to get our house in order and see whether we are aligning ourselves with way things should work now. So, our challenge is to come up with a strategy, see how best we can reorganize our structures, to be able to deliver communications-information systems support for the Ghana Armed Forces,” he said.
Searyoh related that his organization has already accomplished one part of erecting the necessary foundation by establishing an appropriate policy structure.
“What is required now is the implementing level. Currently we have communications on one side, and computers on one side. The lines are blurred — you cannot operate like that, you’ve got to bring them together,” he said.
Building that merged entity to support deployed forces is what he sees as the primary challenge at present.
“Once you get that done you can talk about equipment, you can talk about resources,” Searyoh said. “I look at the current collaboration between the U.S. and the coalition partners taking a new level.”
“The immediate challenges that we have is the interoperability, which I think is one of the things we are also discussing here, interoperability and integration,” said Lt. Col. Kelvin Silomba, African Union-Zambia, Information Technology expert for the Africa Stand-by Force.
“You know that we’ve got five regions in Africa. All these regions, we need to integrate them and bring them together, so the challenge of interoperability in terms of equipment, you know, different tactical equipment that we use, and also in terms of the language barrier — you know, all these regions in Africa you find that they speak different languages — so to bring them together we need to come up with one standard that will make everybody on board and make everybody able to talk to each other,” he said.
“So we have all these challenges. Other than that also, stemming from the background of these African countries, based on the colonization: some of them were French colonized, some of them were British colonized and so on, so you find that when they come up now we’ve adopted some of the procedures based on our former colonial masters, so that is another challenge that is coming on board.”
The partnership with brother African states, with the U.S. government and its military branches, and with other interested collaborators has had a positive influence, said Silomba.
“Oh, it’s great. From the time that I got engaged with U.S. AFRICOM — I started with Africa Endeavor, before I even came to the AU — it is my experience that it is something very, very good.
“I would encourage — I know that there are some member states — I would encourage that all those member states they come on board, all of these regional organizations, that they come on board and support the AFRICOM lead. It is something that is very, very good.
“As for example, the African Union has a lot of support that’s been coming in, technical as well as in terms of knowledge and equipment. So it’s great; it’s good and it’s great,” said Salimba.
Other participant responses to the conference were positive as well.
“The feedback I’ve gotten from every member is that they now know what the red carpet treatment looks like, because USARAF has gone over and above board to make sure the environment, the atmosphere and the actual engagements … are executed to perfection,” said Ferrell. “It’s been very good from a team-building aspect.
“We’ve had very good discussions from members of the African Union, who gave us a very good understanding of the operations that are taking place in the area of Somalia, the challenges with communications, and laid out the gaps and desires of where they see that the U.S. and other coalition partners can kind of improve the capacity there in that area of responsibility.
“We also talked about the AU, as they are expanding their reach to all of the five regions, of how can they have that interoperability and connectivity to each of the regions,” Ferrell said.
“(It’s been) a wealth of knowledge and experts that are here to share in terms of how we can move forward with building capacities and capabilities. Not only for U.S. interests, but more importantly from my perspective, in building capacities and capabilities for our African partners beginning with the Commission at the African Union itself,” said Kevin Warthon, U.S. State Department, peace and security adviser to the African Union.
“I think that General Ferrell has done an absolutely wonderful thing by inviting key African partners to participate in this event so they can share their personal experience from a national, regional and continental perspective,” he said.
Warthon related from his personal experience a vignette of African trust in Providence that he believed carries a pertinent metaphor and message to everyone attending the conference.
“We are not sure what we are going to do tomorrow, but the one thing that I am sure of is that we are able to do something. Don’t know when, don’t know how, but as long as our focus is on our ability to assist and to help to progress a people, that’s really what counts more than anything else,” he said.
“Don’t worry about the timetable; just focus on your ability to make a difference and that’s what that really is all about.
“I see venues such as this as opportunities to make what seems to be the impossible become possible. … This is what this kind of venue does for our African partners.
“We’re doing a wonderful job at building relationships, because that’s where it begins — we have to build relationships to establish trust. That’s why this is so important: building trust through relationships so that we can move forward in the future,” Warthon said.
Conference members took a cultural tour of Venice and visited a traditional winery in the hills above Vicenza before adjourning.
To learn more about U.S. Army Africa visit our official website at www.usaraf.army.mil
Official Twitter Feed: www.twitter.com/usarmyafrica
Official YouTube video channel: www.youtube.com/usarmyafrica
The gun comes into the major parts of body, light, magazine and shroud.
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Built without glue
Non-firing
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Lockheed Martin technicians at Michoud Assembly Facility in Louisiana assemble and weld the components of Orion's pressure vessel for Artemis III.
Erklärung in deutscher Sprache weiter unten
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Baobab is the common name for each of the nine species of tree in the genus Adansonia. The generic name honours Michel Adanson, the French naturalist and explorer who described Adansonia digitata.
Of the nine species, six are native to Madagascar, two are native to mainland Africa and the Arabian Peninsula, and one is native to Australia. One of the mainland African species also occurs on Madagascar, but it is not a native of that island. It was introduced in ancient times to south Asia and during the colonial era to the Caribbean. It is also present in the island of Cape Verde. The ninth species was described in 2012, and is found in upland populations of southern and eastern Africa.
Adansonias reach heights of 5 to 30 m and have trunk diameters of 7 to 11 m. The Glencoe baobab, a specimen of A. digitata in Limpopo Province, South Africa, was considered to be the largest living individual, with a maximum circumference of 47 m and a diameter of about 15.9 m. The tree has since split into two parts, so the widest individual trunk may now be that of the Sunland baobab, or Platland tree, also in South Africa. The diameter of this tree at ground level is 9.3 m and its circumference at breast height is 34 m.
Adansonia trees produce faint growth rings, probably annually, but they are not reliable for aging specimens, because they are difficult to count and may fade away as the wood ages. Radiocarbon dating has provided data on a few individuals. A specimen of A. digitata known as Grootboom was dated and found to be at least 1275 years old, making it among the oldest known angiosperm trees.
HABITAT
The Malagasy species are important components of the Madagascar dry deciduous forests. Within that biome, Adansonia madagascariensis and A. rubrostipa occur specifically in the Anjajavy Forest, sometimes growing out of the tsingy limestone itself. A. digitata has been called "a defining icon of African bushland".
WATER STORAGE
Baobabs store water in the trunk (up to 100,000 litres) to endure the harsh drought conditions particular to each region. All occur in seasonally arid areas, and are deciduous, shedding their leaves during the dry season.
USES
Since 2008, interest has been increasing for developing baobab seeds or dried fruit powder for consumer products. As of 2010, the potential international market was estimated at $1 billion per year.
Some species are also sources of fiber, dye, and fuel. Indigenous Australians used the native species A. gregorii for several products, making string from the root fibers and decorative crafts from the fruits. The fresh fruit is said to taste like sherbet. A large, hollow baobab south of Derby, Western Australia, was used in the 1890s as a prison for convicts on their way to Derby for sentencing. The Boab Prison Tree, Derby, still stands and is now a tourist attraction.
The leaves of A. digitata are eaten as a leaf vegetable. The seeds of some species are a source of vegetable oil.
The fruit has a velvety shell and is about the size of a coconut, weighing about 1.5 kilograms. It has an acidic, tart flavor, described as "somewhere between grapefruit, pear, and vanilla".
The dried fruit powder of A. digitata contains about 12% water and modest levels of various nutrients, including carbohydrates, riboflavin, calcium, magnesium, potassium, iron, and phytosterols, with low levels of protein and fats. Its contents of dietary fiber (around 50% by weight), ascorbic acid (vitamin C), and thiamin were assessed to be especially high.
In Zimbabwe, the fruit is used in traditional food preparations which include "eating the fruit fresh or crushed crumbly pulp to stir into porridge and drinks". Malawi women have set up commercial ventures harvesting the baobab to earn their children's school fees.
In the European Union (EU) prior to commercial approval, baobab fruit powder was not available for ingredient uses, as legislation from 1997 dictated that foods not commonly consumed in the EU would have to be formally approved first. In 2008, baobab dried fruit pulp was authorized in the EU as a safe food ingredient, and it was later granted GRAS status in the United States.
FOOD USES
The powdery white interior may be used as a "thickener in jams and gravies, a sweetener for fruit drinks, or a tangy flavor addition to hot sauces". The fruit pulp and seeds of A. grandidieri and A. za are eaten fresh. In Tanzania, the dry pulp of A. digitata is added to sugar cane to aid fermentation in beermaking. The flavor of limited-release Japanese soda Pepsi Baobab was described as "liberating" by PepsiCo.
In Angola, the dry fruit is usually boiled and the broth is used for juices or as the base for a type of ice cream known as gelado de múcua.
ECOLOGY
Baobabs are important as nest sites for birds, in particular the mottled spinetail and four species of weaver.
WIKIPEDIA
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AFRIKANISCHER AFFENBROTBAUM
Der Afrikanische Affenbrotbaum (Adansonia digitata), auch Afrikanischer Baobab (von arabisch bu-hubub) genannt, zählt zur Unterfamilie der Bombacoideae in der Familie der Malvengewächse (Malvaceae). Er gehört zu den bekanntesten und charakteristischsten Bäumen des tropischen Afrika.
Der wissenschaftliche Gattungsname ehrt den europäischen Entdecker des Baums, den französischen Naturforscher Michel Adanson, der im 18. Jahrhundert in Saint-Louis den ersten Botanischen Garten Senegals anlegte. Das Artepitheton digitata spielt auf die Form der Blätter an, die sich aus fünf bis neun Einzelblättchen zusammensetzen, welche entfernt an die Finger einer menschlichen Hand erinnern.
BESCHREIBUNG
VEGETATIVE MERKMALE
Der Affenbrotbaum zeichnet sich durch einen relativ kurzen, extrem dicken Stamm aus. So steht in Südafrika im Letaba-Distrikt ein Affenbrotbaum, der bei einer Höhe von 19 Metern einen Stammdurchmesser von 10,64 Metern aufweist. In Ostafrika treten sehr häufig flaschenförmige Stammformen auf, bei denen sich der Stamm abrupt in wenigen Metern Höhe stark verjüngt.
Die Baumkrone besteht aus kräftigen, oft unförmig erscheinenden Ästen, die eine weit ausladende Krone bilden. Im unbelaubten Zustand erinnert die Astkrone an ein Wurzelsystem, was zu der Legende beigetragen hat, der Affenbrotbaum sei ein vom Teufel verkehrt herum gepflanzter Baum.
Der Stamm ist häufig tief gefurcht oder weist kehlige Vertiefungen auf. Die graubraune bis graue Rinde ist zwischen fünf und zehn Zentimeter dick. Deshalb kann der Baum kleinere Buschbrände relativ unversehrt überstehen. Sie ist außen hart und innen faserig. Junge Bäume haben zuerst eine Pfahlwurzel. Mit zunehmendem Alter des Baumes entwickelt sich ein Lateralwurzelsystem, das bis in 1,8 Meter Tiefe reicht. In horizontaler Richtung erstreckt sich das Wurzelsystem weiter als die Baumhöhe.
Bei Baobabs werden entsprechend der Stammform vier Entwicklungsphasen unterschieden: schmale Schösslinge, Kegelförmige, Flaschenförmige und Alte. Schösslinge (bis 10–15 Jahre) wachsen zunächst ohne ausgeprägtes Dickenwachstum zu einer Höhe von vier bis sechs Metern heran, die Äste ragen spitzwinklig nach oben. Auf geeigneten Standorten wachsen die jungen Baobabs anfangs jährlich zwischen 80 und 100 Zentimetern. Dann schwillt der Stamm zu einer Kegelform an (bis 60 bis 70 Jahre), der Baum wird 5 bis 15 Meter hoch und bis zu 7 Meter dick, und der Baum blüht erstmals. In einem Alter von 30 bis 40 Jahren beginnen die Äste rechtwinklig vom Stamm weg zu wachsen und nehmen ab diesem Zeitpunkt in ihrem Längenwachstum deutlich zu. Danach ist der Baum mit 10 bis 20 Metern in der Höhe ausgewachsen, der Stamm nimmt in der Dicke nur langsam zu und entwickelt eine Flaschenform (200–300 Jahre). Ein Baum kann im Alter von einhundert Jahren bereits einen Stammdurchmesser von vier bis fünf Metern erreicht haben. Schließlich entwickelt der Baum eine ausladende Krone und wächst nur noch sehr langsam in die Breite; hohle und mehrfache Stämme sind häufig zu finden (Alter: bis zu 800 Jahre).
BLÄTTER
Der Affenbrotbaum ist ein periodisch laubabwerfender Baum. Die einfachen oder handförmigen, langstieligen und wechselständigen Laubblätter erscheinen an den Zweigenden im Frühsommer kurz vor dem Beginn der Regenzeit und entwickeln sich vollständig innerhalb von vier Wochen. Bleibt der Regen aus oder ist die Regenmenge sehr gering, verzögert sich die Blattentwicklung.
Affenbrotbäume treiben zuerst Blätter von einfacher elliptischer Form aus, die jedoch sehr frühzeitig wieder abgeworfen werden; auch an jungen Pflanzen sind die Blätter einfach. Ihnen folgen glänzend grüne Laubblätter, die fünf- bis neunteilig sind. Sie haben einen Durchmesser von etwa 20 Zentimetern; die Blätter oder Blättchen sind jeweils ganzrandig und bespitzt bis zugespitzt. Der Blattstiel ist bis 16 Zentimeter lang.
BLÜTEN
Das Alter, in dem der Baum das erste Mal Blüten ansetzt, ist abhängig von seinem Verbreitungsgebiet. In Westafrika blüht der Affenbrotbaum erstmals im Alter von acht bis zehn Jahren, in Ost- und Südafrika frühestens mit 16 Jahren.
Der Blütenansatz erfolgt vier Wochen nach der Blattentwicklung. Die Hauptblütezeit beträgt vier Wochen, die einzelne Blüte blüht dagegen nur 24 Stunden. In dieser Zeit ist sie für etwa 16 bis 20 Stunden bestäubungsfähig.
Die zwittrigen Blüten mit doppelter Blütenhülle erscheinen meist einzeln oder paarig. Die sehr großen Blüten sind von wachsig-weißer Farbe und hängen an langen Stielen von den Blattachseln herab. Sie bestehen aus fünf Kronblättern, die sich ein wenig überlappen und 4,5 bis 5 Zentimeter breit und 12 Zentimeter lang sind. Sowie einem drei- bis fünflappigen, leicht haarigen Kelch. Jede Blüte beinhaltet 720 bis 1.600 rasierpinselförmig angeordnete Staubblätter, die an ihrer Basis zu einer 1,5 bis 4,5 Zentimeter langen, schmalen Röhre (Androphor) zusammengewachsen sind. Der mehrkammerige Fruchtknoten ist oberständig, mit einem langen und vorstehenden Griffel mit einer mehrlappigen Narbe. Auch hier zeigen sich geografische Unterschiede. In Ost- und Südafrika ist der Blütenstiel lediglich 20 Zentimeter lang, in Westafrika dagegen bis zu 90 Zentimeter.
Die für Menschen auf Grund ihres süßlichen Aasgeruches unangenehm riechenden Blüten öffnen sich ab dem späten Nachmittag und sind am nächsten Morgen ganz offen. Während der Nacht werden sie durch Flughunde wie den Palmen- und den Nilflughund bestäubt. Auch der Großohr-Riesengalago, der Senegal-Galago und verschiedene Nachtfalter besuchen die Blüten und tragen in kleinerem Umfang zur Bestäubung bei.
FRÜCHTE UND SAMEN
Nach der Bestäubung entwickeln sich an den langen Stielen innerhalb von acht Monaten holzige und samtig behaarte, nicht öffnende, vielsamige Kapseln, die je nach Verbreitungsgebiet unterschiedlich geformt sind. Bei in Angola verbreiteten Affenbrotbäumen ist die Frucht von länglicher Form, in den anderen natürlichen Verbreitungsgebieten eher ei- bis kugelförmig. Die an Stielen herabhängenden Früchte werden 25 bis 50 Zentimeter lang. Sie verfärben sich während des Reifungsprozesses von Grün über Gelb in ein Graubraun.
Das auch für den Menschen essbare Fruchtfleisch ist weiß und trocken-mehlig, schmeckt durch den Vitamin-C-Gehalt säuerlich und ist von einer Konsistenz, die in etwa an feste, brüchige Watte erinnert. Darin eingebettet sind die dunkelbraunen Samen der Früchte, die man herausbrechen und gleichfalls essen kann. Sie sind relativ glatt, haselnussgroß, nierenförmig und sehr fettreich.
Vor allem Elefanten und Paviane, aber auch Antilopen und Kleinsäuger fressen die Früchte und nehmen dabei auch die Samen auf, die aber den Verdauungstrakt unaufgeschlossen passieren und von Vögeln aus dem ausgeschiedenen Kot herausgepickt werden. Die Samen bleiben mehrere Jahre keimfähig. Ihre lange Keimruhe endet in der Natur vermutlich durch Buschfeuer, langanhaltende Regenfälle oder die Verdauung durch Elefanten (Endochorie).
Unbehandelt beträgt die Keimfähigkeit der Samen unter 20 %. Man kann sie künstlich keimfähig machen, indem sie mit kochend heißem Wasser übergossen und etwa einen Tag in der Flüssigkeit stehen gelassen werden. Je nach Witterungsbedingungen können solcherart vorbehandelte Samen dann nach drei Wochen bis sechs Monaten zur Keimung kommen. Auch Säurebehandlung und Anschleifen der dicken Samenschale können die Keimfähigkeit steigern.
ALTER
Die Mächtigkeit der Bäume und ihre unregelmäßige Wuchsform hat immer wieder dazu geführt, dass ihr Alter überschätzt wurde. So war David Livingstone der Überzeugung, dass ein Baum, den er am Sambesi entdeckte, ein Alter von mindestens 4000 Jahren aufweise. Umfangreiche Untersuchungen in Kenia, Mali, Sudan, Tansania und Sambia haben jedoch gezeigt, dass nur sehr wenige Affenbrotbäume älter als 400 Jahre sind.
2018 berichteten Forscher von einem teilweisen bzw. vollständigen Absterben von 9 der 13 ältesten Baobabs innerhalb der vergangenen zwölf Jahre. Die Ursache hierfür sei unbekannt; womöglich hätten Klimaveränderungen einen Einfluss. Der Studie zufolge sei der weltweit älteste Baobab, Panke in Simbabwe, nach über 2.500 Jahren (2.429 [±14] Jahre mit Radiokohlenstoffmethode gemessen) in den Jahren 2010–2011 abgestorben. Der älteste weitgehend intakte Baobab sei nun Humani Bedford Old baobab in Simbabwe mit einem geschätzten Alter von 1.800 Jahren.
CHROMOSOMENZAHL
Die Chromosomenzahl beträgt 2n = 160.
VERBREITUNG UND SYSTEMATIK
Der Affenbrotbaum ist die charakteristische Baumart der trockenen Baumsavanne des afrikanischen Tieflands südlich der Sahara. Er fehlt dagegen in den zentralafrikanischen Regenwäldern. Das natürliche Verbreitungsgebiet reicht von der Sahelzone bis in den Transvaal. Der Baum ist frostempfindlich, die südliche Verbreitungslinie also durch die Frostgrenze entlang des 15. Breitengrades bedingt.
Über sein Verbreitungsgebiet zeigt er deutliche Unterschiede im Erscheinungsbild. Bis jetzt fehlt jedoch eine systematische Untersuchung, ob die Unterschiede in der Stammform sowie in Form und Größe der Blüten und Früchte auf die Zugehörigkeit der Einzelbäume zu unterschiedlichen Unterarten zurückzuführen sind. Häufige Begleitbäume sind Akazien, Schirmakazien und Tamarindenbäume.
An den semiariden Lebensraum in einer Höhenlage von 450 bis 600 Metern mit jährlichen Niederschlagshöhen zwischen 300 und 500 Millimetern ist der sonnenliebende Baum durch seine besondere Fähigkeit zur Wasserspeicherung angepasst. Er ist deshalb in diesen Gebieten am häufigsten zu finden. Während der Regenzeit, die in seinem Verbreitungsgebiet zwischen sechs Wochen und fünf Monaten andauert, saugt ein Baum, der ein Volumen von bis zu 200 Kubikmetern einnehmen kann, mit seinen schwammigen Fasern bis zu 140.000 Liter Wasser auf, die er für die Trockenzeit speichert. Der Stamm kann sich aufgrund der Wasserspeicherung während der Regenzeit um mehrere Zentimeter verdicken.
Affenbrotbäume sind sowohl in Küstennähe als auch in Höhenlagen bis zu 1500 m ü. NN zu finden. Das Vorkommen in den Küstenwäldern ist vermutlich auf Anpflanzungen zurückzuführen. Diese Verbreitungsgebiete zeichnen sich durch deutlich andere Niederschlagshöhen aus. Die Art kann über längere Zeit bei jährlichen Niederschlägen unter 100 Millimetern überdauern, Verhältnisse, wie sie zum Beispiel in Mauretanien herrschen. Andererseits kommt der Affenbrotbaum auch mit vergleichsweise hohen jährlichen Niederschlägen von 1400 Millimetern und mehr zurecht, insbesondere, wenn er auf gut wasserdurchlässigem Grund steht. Staunässe, schwere Lehmböden sowie temporäre Überschwemmungen toleriert der Baobab nicht. Beste Wachstumsvoraussetzungen findet er auf kalkhaltigen und tiefgründigen Böden.
Durch den Menschen wurde der Baobab in anderen Regionen eingeführt (sogenannte Hemerochorie). So ist sein Vorkommen in Arabien und in Indien vermutlich auf arabische Händler zurückzuführen, die den Baum in der Volksmedizin nutzten und ihn in Indien und Arabien bereits im 13. Jahrhundert einführten. Der Baum ist außerdem auf den Kapverdischen Inseln, auf Madagaskar und Sri Lanka sowie in Australien zu finden. Als Ziergehölz wird er gelegentlich in Florida, auf Haiti, den Philippinen und Java angepflanzt.
TIERE SEINES LEBENSRAUMES
Elefanten nutzen die Fähigkeit des Affenbrotbaumes zur Wasserspeicherung. Mit den Stoßzähnen brechen sie die Rinde des Affenbrotbaums auf, entfernen mit dem Rüssel die feuchten Fasern im Bauminnern und kauen diese, um so Feuchtigkeit zu gewinnen. Dabei entstehen große Hohlräume in den Bäumen, die dazu führen können, dass die Bäume kollabieren. Es sollen schon Elefanten durch plötzlich umstürzende Affenbrotbäume erschlagen worden sein.
Große Elefantenpopulationsdichten in verschiedenen Nationalparks führten und führen zu einer Gefährdung der Bestände des Baobab, da dessen natürliche Sukzession nicht ausreicht, die Bestandsdichte zu erhalten. Besonders in den Nationalparks Simbabwes gibt es mittlerweile so viele Elefanten, dass sie das langfristige Überleben der Affenbrotbaumbestände gefährden. In anderen Regionen, in denen aufgrund des Bevölkerungsdrucks die landwirtschaftliche Nutzung intensiviert wurde, fehlen dagegen Wildtiere, die die Samen der Affenbrotbäume verbreiten. Auch wenn man die Bäume, die nur sehr schwer zu roden sind, in der Regel stehen lässt, wenn Land einer landwirtschaftlichen Nutzung zugeführt wird, ist damit die natürliche Verjüngung der Bestände unterbunden.
Der Affenbrotbaum ist Wirtspflanze für eine Reihe von Insekten, die als landwirtschaftliche Schädlinge betrachtet werden, und Nebenwirt einiger, besonders für Kakao- und Baumwollpflanzungen problematischer Schadinsekten. Rodungen von Affenbrotbäumen haben jedoch gezeigt, dass diese Schädlinge auf andere Wirtspflanzen ausweichen, wenn Affenbrotbäume fehlen.
Der Affenbrotbaum bietet außerdem zahlreichen weiteren Tierarten Schutz und Nahrung. So nisten in der Krone der Affenbrotbäume beispielsweise Webervögel und Sperlingspapageien; Galagos suchen dort Schutz. Höhlen im Stamm und in den Ästen werden von Blauracken, Eisvögeln, Schleiereulen, Nashornvögeln und einer Reihe von Arten der Langflügelpapageien und Unzertrennlichen zum Brüten genutzt. In einzelnen Regionen brütete der Graukopfpapagei ausschließlich in Höhlen des Affenbrotbaums. Die Früchte des Baums werden außer von Vögeln auch von Elefanten und Pavianen sowie Antilopen und einer Reihe von Kleinsäugern gefressen.
VERWENDUNG
Die San, Bewohner der Kalahari-Wüste, zapfen direkt den Wasservorrat der Bäume an, um ihren Flüssigkeitsbedarf zu decken. Auch Fruchtfleisch, Samen, Rinde, Blätter und Sprösslinge des Affenbrotbaums sind vielseitig einsetzbar; die Höhlungen des Baumes werden außerdem als Speicher für Getreide und Wasser verwendet.
Ähnlich der Rolle, die früher Linden und Eichen im mitteleuropäischen Dorfleben innehatten, spielt der Affenbrotbaum außerdem im afrikanischen Leben eine große Rolle. An zentral gelegenen Bäumen finden in vielen Dörfern Märkte, Verhandlungen und sonstige soziale Ereignisse statt.
AFRKANISCHE VOLKSMEDIZIN
In der afrikanischen Volksmedizin findet nahezu jeder Teil des Affenbrotbaums Verwendung. So werden die Früchte beispielsweise gegen Infektionen und Krankheiten wie Pocken und Masern eingesetzt. Die Blätter werden bei Erkrankungen wie Ruhr, Diarrhöe, Koliken und Magen-Darm-Entzündungen eingenommen. Die Samen werden als Herzmittel, bei Zahnschmerzen, Leberinfektionen und Malaria-Erkrankungen genutzt.
Biochemisch nachgewiesen wurde das Vorkommen von Proanthocyanidinen im Perikarp der Früchte. Allerdings stehen placebokontrollierte klinische Studien zur Bewertung der phytopharmakologischen Wirkstoffe aus.
NAHRUNGSMITTEL
Das Fruchtfleisch und die Samen sind reich an Proteinen, Kohlenhydraten und Öl und enthalten besonders die Mineralien Calcium, Kalium und Magnesium. Nach Entfernung der Samen und Fasern wird das Fruchtfleisch getrocknet und entweder unverarbeitet gegessen oder in Milch oder Breie gemischt. Aus den fettreichen Samen gewinnt man durch Pressen ein Öl, welches reich an Palmitinsäure ist und eine hohe oxidative Stabilität aufweist; in Pulverform dient es zum Andicken von Suppen. Die Samen werden auch geröstet gegessen oder fermentiert als Gewürz verwendet.
Die Blätter des Affenbrotbaums werden außerdem als Gemüse genutzt, indem sie wie Spinat zubereitet entweder frisch gegessen oder getrocknet und pulverisiert werden. 100 Gramm haben einen Energiewert von durchschnittlich 289 kJ (69 kcal) und enthalten unter anderem 3,8 Gramm Eiweiß sowie 50 Milligramm Ascorbinsäure. In Nigeria werden die Blätter als kuka bezeichnet. Kuka-Suppe ist eine für dieses Land typische Spezialität.
Auch zur Getränkeherstellung sind die Früchte geeignet: Das Fruchtfleisch kann bierartig vergoren werden. Im Sudan wird aus Fruchtfleisch mit Wasser ein Getränk unter dem Namen Tabaldi hergestellt.
WEITERE VERWENDUNG
Der Baum liefert darüber hinaus Material für Kleidung, zum Dachdecken, Halsschmuck, Schnüre und Seile, Netze, Matten, Hüte, Tabletts, Kisten, Körbe und Papier. Verwendet werden dafür die Fasern des inneren Bastes, die sehr dauerhaft und kräftig sind. Sie werden gewonnen, indem die Rinde der Bäume abgeschält wird. Ähnlich wie bei Korkeichen regeneriert sich die Rinde wieder, so dass die Bäume wiederholt als Bastlieferanten genutzt werden können. Aus den Wurzeln wird ein roter Farbstoff gewonnen; der Pollen ergibt, vermischt mit Wasser, einen Klebstoff. Aufgrund des hohen Pottascheanteils wird aus der Asche verschiedener Baumteile außerdem Seife hergestellt.
Affenbrotbäume, die einen hohlen Stamm haben, sollen gelegentlich als Gefängnis oder Toilette verwendet werden; aus Westafrika wird berichtet, dass hohle Affenbrotbäume auch als Begräbnisstätte fungieren.
Forstwirtschaftlich wird der Affenbrotbaum dagegen nicht genutzt. Aufgrund seiner Elastizität ist das leichte Holz nur schwer mit der Axt zu bearbeiten, und es verrottet sehr schnell.
MYTHOLOGIE UND LITERATUR
Aufgrund seines Aussehens ranken sich mehrere Legenden um den Affenbrotbaum.
Nach einer in Afrika weit verbreiteten Vorstellung riss der Teufel den Baum aus und steckte ihn anschließend mit den Zweigen zuerst in den Boden, so dass die Wurzeln nun in die Luft ragen. Einer anderen Erzählung zufolge wollte der Baum bei seiner Entstehung schöner als alle anderen Bäume werden. Als ihm dies jedoch nicht gelang, steckte er seinen Kopf in die Erde und das Wurzelwerk ragte gegen den Himmel. Aus dem Reich der Schöpfungsmythologie erschließt sich uns eine weitere Erklärung: Als am Anbeginn der Welt die Hyäne beim ersten Blick ins spiegelnde Wasser ihre eigene Hässlichkeit erkannte, war sie darüber sehr erzürnt. Sie riss einen Baobab aus und schleuderte ihn gen Himmel, um ihren Schöpfer zu treffen, der ihr dies angetan hatte. Der Baum jedoch verfehlte sein Ziel, stürzte zurück zur Erde, blieb dort umgekehrt im Boden stecken und wächst seither mit den Wurzeln nach oben.
Als Sitz von Göttern und Geistern spielt der Baobab außerdem in einer Reihe weiterer afrikanischer Legenden und Sagen eine Rolle.
In der modernen westafrikanischen Literatur steht der Baobab häufig als ein Symbol des traditionellen afrikanischen Lebens und der unberührten, ewigen Natur. Orte mit "heiligen" Baobabs werden oftmals als Sinnbild des Garten Eden verwendet.
Auch in die europäische Kinderliteratur hat der Baum Eingang gefunden. In Antoine de Saint-Exupérys Geschichte Der Kleine Prinz sorgt sich dieser, dass Baobabs seinen kleinen Asteroiden überwuchern und mit ihrem Wurzelwerk sprengen könnten: „Die Affenbrotbäume beginnen damit klein zu sein, bevor sie groß werden.“
Auch in der modernen deutschsprachigen Lyrik ist der Affenbrotbaum gelegentlich als Sujet anzutreffen (so z. B. bei Paul Celan). Hans Magnus Enzensberger benutzt den Affenbrotbaum als Bild für das Neuronale Netz.
WIKIPEDIA
Matt Fouche (left) and Meg White, from Master Point Rope Access Solutions, high-five while scaling a wind turbine blade to attaching sensors to the end of the blade which will be used to sense impact, such as that from birds or bats, at the Foothills Campus of the National Renewable Energy Laboratory (NREL).
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Multi-Component Inspector Kit (MCIK) for Complementary Access (CA)/DIV Inspections
Safeguard Equipments - Extended Multi-Component Inspector Kit (MCIK) packed in soft bags inside plastic PeliCase IAEA Vienna, Austria, 3 October 2018
Photo Credit: Dean Calma / IAEA
Vrijdag namiddag besteld, zelfde dag pakje aangekomen in Memphis om 12:03AM lokale tijd en maandag om 10h36 afgeleverd. Rapper moet dat niet gaan!
Handig is vooral de SMD box met 1400 capaciteiten 0805. Zo kan ik eenvoudiger optimaliseren, je moet nu eenmaal naar SMD overschakelen omdat bepaalde componenten niet meer beschikbaar zijn in DIL. Ook de afmetingen moeten kleiner.
Nu nog de SMD pcb tekenen. Doel is een nog betere IR detector te bouwen die heel gevoelig is, ook voor kleine donkere beestjes in volle vlucht, en dit overdag waarbij er ook nog veel zonlicht aanwezig is. Of het echt beter zal worden moeten we afwachten. Zodra er resultaten zijn komen er wel nieuwe beelden.
This is a simple SOIC->DIP adapter, made by tediously soldering wires to the pins of the chip (although it looks like they're shorting out, they are actually separated by a fraction of a mm) and then soldering to a DIP socket. I tried both regular and machine pin sockets while making this, and I found the machine pin type works the best, because you can easily fill the holes with solder. (The standard kind is more difficult.)
Are we driving technology, or are we being driven by it? This question and others are addressed in the Analytical Corner - The Components of a Winning National Digital Strategy led by Jennifer Beckman, Debbie Chungu and Emre Alper at the IMF Headquarters during the 2019 IMF/World Bank Annual Meetings, October 16, 2019 in Washington, DC. IMF Photograph/Stefani Reynolds