View allAll Photos Tagged Absorption
This tree had been uprooted by a flash flood who knows how long ago, but this massive stone is completely encased just below the old ground level inside the roots.
Organic dyes with strong near infrared absorption are layered onto a substrate to create organic photovoltaics inside Stephen Forrest’s lab at the G.G. Brown Building on North Campus in Ann Arbor, MI on July 28, 2020.
These semi-transparent OPVs are attractive energy conversion devices for integration onto window panes, skylights, and building facades, providing an opportunity for increasing solar energy harvesting on building surfaces.
Photo: Robert Coelius/University of Michigan Engineering, Communications & Marketing
Deep Longitudinal ~ Strike Phase
The deep longitudinal kinetic chain is an energy absorption system. As we interact with gravity, in relationship with the swing phase, we are essentially falling forward. The strike phase of the gait absorbs kinetic energy to be retranslated into the stance phase, the lateral kinetic chain.
*
Mobility
I’m wondering if the word mobility is misunderstood.
Mobility is not just about passive or active range of motion (ROM). ROM is the measurable range a joint has available. However, it is important to ask the question whether that available range is safe for the structure. The answer to that question must take into consideration that the structure needs stability, or more importantly, dynamic stability which helps keep the structure safe.
Dynamic stability is the availability of muscular activation that supports the structure during movement. It does this by activating the fascial system to create a dynamic supportive environment for three-dimensional movement: some tissues are shortening, others are staying in a relatively neutral position, while other tissues are lengthening. This is known as concentric, isometric, and eccentric contraction. The players involved need to participate in their role by creating a safe, dynamically changing environment.
Having ROM without dynamic stability is potentially dangerous for the structure. When movement deviates, or the demands on the structure require dynamic stability, and that stability is not available, the nervous system’s motor control center and reflexive movement strategies must come up with a solution to keep the structure safe from real or perceived threat of injury. At that moment when a strategy is derived, the nervous system learns a compensation pattern. This is a coping strategy. It is a necessary survival method to ensure adaptation to a changing environment. This is why I talk about compensations potentially having both positive and negative attribute
[via "Applied Anatomy" on fb]
On July 26, Ambassador Daniel Shapiro visited the diverse “melting pot” city of Netanya, where he met with new immigrants who contribute to the city's vibrancy and success. During his visits to Ulpan Habenleumi and the Dora Community Center, Ambassador Shapiro highlighted the important contributions immigrants make both in the United States and Israel. The Ambassador enjoyed interacting with new immigrants from the former Soviet Union and Ethiopia, shared their stories, and witnessed their cultural performances. Ambassador Shapiro was warmly hosted by Mayor Miriam Fierberg-Ikar, who showed him the impressive advances the city has made in the past decade in business and tourism. The Ambassador also got to spend some quality time playing with special needs children at the Beit-Guy Day Care center, and witnessed the new techniques and extraordinary care provided to the children there.
what appear to be a moment of reflection, in reality is a moment of absorption. like we all this man was deeply focused on his handheld phone ... nothing new, i'm addicted too:)
if you are viewing it, please says something about it, give a critique, leave a comment, and/or favorite it, it's good karma, common courtesy and much appreciated!
Like my Work on Facebook:ZL-Photography
Example of vintage asbestos advertising, marketed toward the sound-absorption quality of asbestos fiber. Not just for fireproofing, spray-applied asbestos materials were used in a wide variety of applications.
The setting Sun on June 30, 2014 as it set into a hazy or dusty sky and turned deep red/magenta, above the horizon clouds. I shot this through the 66mm William Optics apo refractor with the Canon 60Da camera at ISO 100. This is a composite of two exposures: longer for the sky and shorter for the Sun and details on the disk. A large sunspot group is on the eastern limb. This was shot without a filter -- atmospheric extinction dimmed the Sun enough naturally.
Improve your health with a daily dose of all natural Aloe Vera Juice. Aloe Vera leaves are filled with a healthful inner gel which is full of many valuable nutrients including vitamins, minerals, enzymes, lipids, and amino acids. Researchers report that when taken internally, Aloe Vera coats the lining of the digestive tract allowing absorption of the aloe polysaccharide. The following are some of the reported internal benefits of Aloe Vera ACTIValoe™: • Antioxidant support • Joint and Muscle health support • Digestive support • Gastrointestinal Relief • Increased Absorption • Immune Support
Title: Technician at work, UV-634 Atomic Absorption Spectrophotometer mono calibration, Varian Techtron, 679 Springvale Road, Mulgrave
Author / Creator: Sievers, Wolfgang, 1913-2007 photographer.
Date: 1974.
Varian Techtron was the result of a merger between the Australian company Techtron and the American firm Varian Associates in 1967. The Springvale Road site (then in Springvale North, but now in Mulgrave) was established by Techtron and is still in use, but now as Agilent Technologies (which acquired Varian in 2009). Techtron Appliances was established in 1938 and it and its successor companies have produced a variety of electronic and analytic equipment for industry and scientific research, notably including Atomic Absorption Spectrophotometers (AAS) to CSIRO specifications.
See locale on Google Maps.
Subjects:
Varian Techtron Employees.
Atomic absorption spectroscopy Calibration.
Atomic absorption spectroscopy Instruments.
Industrial technicians.
Portrait photographs.
Gelatin silver prints.
Index terms:
Australia; Victoria; Wolfgang Sievers; Mulgrave; technicians; atomic absorption spectroscopy; Varian Techtron
Notes:
Job number inscribed in pencil on reverse of image: 4314 AE
Vintage print with the photographer's studio stamp on reverse.
Title taken from information supplied by Varian Australia, courtesy of the photographer.
Printed by Wolfgang Sievers at an unknown date from his negative made in 1974.
Copyright status: This work is in copyright
Conditions of use: Copyright restrictions apply.
For Copyright queries, please contact the National Library of Australia.
Source: SLV
Identifier(s): Accession no: H2000.195/244
Source / Donor: Purchased 2000.
Series / Collection: Wolfgang Sievers collection.
Link to online item:
handle.slv.vic.gov.au/10381/308721
Link to this record:
search.slv.vic.gov.au/permalink/f/1fe7t3h/SLV_ROSETTAIE18...
search.slv.vic.gov.au/permalink/f/1fe7t3h/SLV_VOYAGER1757464
Technicians assemble a monochromator at the Stanford Synchrotron Radiation Lightsource (SSRL). Monochromators are used by X-ray scientists to "tune" a high-intensity beam of X-ray light generated by a synchrotron to very specific energies, using principles analogous to how a prism splits visible light into different colors. This model of monochromator uses liquid nitrogen to keep the precision crystal "prisms" inside cool—in this case, -192 C. The X-ray beam striking the prisms would otherwise heat the crystals sufficiently to cause them to warp.
This unit is being assembled for installation at the Canadian Light Source in Saskatoon, Saskatchewan.
(Brad Plummer/SLAC National Accelerator Laboratory)
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool air or equipment as required. As a necessary byproduct, refrigeration creates waste heat that must be exhausted...
The spectra of three diamonds
Although diamond has the simplest possible chemical formula, it can exhibit large variety of luminescence behaviours. I took three of the small diamonds from my collection and looked at their visible absorption and luminescence spectra.
The diamonds are labelled:
xtal: An octahedral crystal ~2mm on a side with small black (graphite?) inclusions
b: one of a set of small (1-2mm) diamonds given to me by Gérard Barmarin
green: A cut (0.12ct) diamond that has been irradiated in a nuclear reactor and appears a pale apple-green colour
The luminescence spectra of the three diamonds were obtained with excitation by a 50mW 406.9nm violet laser and a 300mW 532.2nm green laser. For the green laser measurement a BG38 filter was used between the laser and the sample to remove the ~800nm pumping signal and an OG570 filter used between the sample and the spectrometer input collimator to block the elastically scattered laser light but to include Raman lines beyond a shift of about 800cm-1.
The luminescent colours of the diamonds excited with a 384nm LED are shown in the image at the top right of two of the plots.
Most of the luminescence centres in diamond are related to nitrogen atoms since these have an atomic radius very close to that of carbon. The centres generallly consist of vacancies in the carbon lattice but can include other impurity atoms such as boron and nickel.
The spectral plot has been divided into overlapping blue and red sections that show the response of the three diamonds to 407 and 532 nm laser excitation. There is also an absorption spectrum of the green diamond which, in addition to the very broad absorption band centred at around 620nm and responsible for the green colour, shows two distinct but weak narrow absorption lines at 416 and 503nm arising from the self absorption in the zero-phonon lines of the N3 and H3 centre fluorescence respectively.
List of spectral features and their likely identification.
Centre----------------Wavelength (nm)
_______________________________________
N3 ZPL-------------------------415.8
N3 abs-------------------------415.8
N3-------------------------------429
Raman I ex 406.9nm-----430.2 (1332 cm-1)
N3-------------------------------439
N3-------------------------------452
N3-------------------------------465
S2-------------------------------489.9
S3-------------------------------496.7
H3-------------------------------503.2
H4-------------------------------505
H4-------------------------------513
H3+H4+S2 + abs ~523
H4-------------------------------529
S3-------------------------------537
Raman I ex 532.2nm-----572.8 (1332 cm-1)
N-V^0 ZPL--------------------576
Graphite xtal?---------------578.3 (1500 cm-1)
Raman II ex 532.2nm-----613 (2467 cm-1)
N-V^- ZPL---------------------639
N-V^- 1 phonon-------------660
?---------------------------------742
_______________________________________
Many of the diamond defects are associated with nitrogen atoms and vacancies in the carbon lattice and there is an extensive literature on the subject and much interest from solid state physicists and engineers. In particular the negatively charged nitrogen vacancy centre known as N-V^- has properties that are of great importance in the development of quantum computing since individual ionic vacancies can be addressed with lasers. The plots show the narrow zero-phonon lines (ZPL) from both the neutral defect, N-V^0 at 576nm and the negative defect, N-V^- at 639nm. These narrow lines (which are much stronger at low temperatures rather than the room temperature (293K) used here) are accompanied by a set of broader phonon sidebands that extend to longer wavelengths. The ZPL represents the electronic transition between the lowest vibrational levels of two electronic states. The phonon sidebands appear at shorter wavelengths in absorption and at longer wavelengths in emission in a manner determined by the Franck-Condon principles.
Other common defects are N3, consisting of three substitutional nitrogen atoms bound to a single vacancy or carbon atom: H3 and H4 that are connected with a pair of nitrogen atoms and a single vacancy in slightly different configurations; and S2 and S3, the first due to a single nitrogen atom associated with two vacancies and the second to a combination of several nitrogen atoms and a single vacancy. As far as I am aware, not all of the luminescence centres in diamond have yet been fully identified and understood.
In addition to the fluorescent emission lines in the spectra that appear at a fixed energy/wavelength, diamonds exhibit a set of characteristic inelastically scattered (Raman) lines that appear at a fixed energy difference from that of the exciting (monochromatic) light source. The most famous of these is the strong, well-known line with a Raman shift of 1332cm-1 that arises from the fundamental vibrational mode of the carbon lattice. It is possible to see overtones of this line although these are faint and have a complex structure (see the lovely 1946 paper by Krishnan, one or Raman's colleagues: repository.ias.ac.in/30540/ ). All three of the spectra here show both the first order at 572.8nm and the second order Raman line at 613nm (2467cm-1) excited by the 532.2nm laser. In the blue, I see only the first order Raman line excited by the 406.9nm laser at 430.2nm and this is blended with the first phonon sideband of the N3 defect luminescence.
In one of my 532nm laser excited spectra of the diamond xtal, I see a narrow line at 578.3nm that does not show up in all spectra. This diamond contains a few small black inclusions which are most probably graphite. I tentatively identify this line with the raman line from graphite which can range from Raman shifts of 1335cm-1 for amorphous material to 1575cm-1 for crystalline graphite. The Raman shift I measure is 1500cm-1. However, I am not at all sure of this ID.
I hope this experiment will help orient people who are interested in diamond spectra to get started with this somewhat bewildering topic. I was certainly bewildered when I started! I can't present myself as an expert in this field and there may well be some mistakes and misunderstandings in this description but, if there are, I will correct them as I learn more. I made use of the books by Gaft et al. (2005, "Luminescence Spectroscopy of Minerals and Materials", Springer Verlag, Berlin Heidelberg, p100 and p187) and by Gorobets & Rogojine (“Luminescent Spectra of Minerals” Moscow, 2002) as well as some of the extensive journal literature.
Note: These measurement of the luminescence spectra were reduced with a new (Cal #9) radiative flux calibration based on the Solar (outside the atmosphere) flux from the Hubble Space Telescope Calibration Database and a transmission model of the Earth's atmosphere at the appropriate zenith distance. The actual calibration curve used for the measurements is from an observation of a halogen filament lamp which has been adjusted to fit the solar flux data. The result is a relative flux scale in energy units per nm which removes the fine pixel-to-pixel sensitivity variations from the spectrometer detector. The result is smooth flux spectra with photon (poisson) fluctuations being the dominant noise source.
The well-understood benefit of sunlight is the production of vitamin D. When skin is exposed to sunlight, a series of chemical reactions begin that converts precursors of vitamin D to the active form of vitamin D. Vitamin D is needed for the intestinal absorption of calcium and the maintenance of calcium and phosphate levels necessary for healthy bone formation. It is also important for proper immune function, cell growth, and nerve and muscle function. Some foods naturally supply vitamin D, such as fish and liver. Other foods, such as milk and cereal, are typically fortified with vitamin D.
1. Sunlight and whole foods send breast cancer into remission. The American physician Dr. Zane Kime used sunbathing and nutrition to cure his patients. Even in terminal cases, Dr. Kime was able to completely reverse the metastasized cancer.
2. The sun's light kills bad bacteria. The German solders after WWI knew of the discoveries that had been made in 1903 by the Nobel Prize winner, Niels Finsen. They used sunlight to disinfect and heal wounds.
3. Sunlight has a beneficial effect on skin disorders, such as psoriasis, acne, eczema and fungal infections of the skin.
4. Sunlight lowers cholesterol. The sun converts high cholesterol in the blood into steroid hormones and the sex hormones we need for reproduction. In the absence of sunlight, the opposite happens; substances convert to cholesterol.
5. The sun's rays lower blood pressure. Even a single exposure significantly lowers blood pressure in individuals with high blood pressure. On the other hand, pharmaceutical drugs such as Statins have side effects, such as robbing the body of Coenzyme Q10. CoQ10 is essential for cellular and heart energy
6. Sunlight penetrates deep into the skin to cleanse the blood and blood vessels. Medical literature published in Europe showed that people with atherosclerosis (hardened arteries) improved with sun exposure.
7. Sunlight increases oxygen content in human blood. And, it also enhances the body's capacity to deliver oxygen to the tissues; very similar to the effects of exercise. The sun has a great effect on stamina, fitness and muscular development.
8. Sunlight builds the immune system. The white blood cells, which increase with sun exposure, are called lymphocytes, and these play a major role in defending the body against infections.
9. Regular sunlight exposure increases the growth and height of children, especially babies. Many cultures throughout history have recognized this fact. Studies have shown the amount of sun exposure in the first few months has an effect on how tall the person grows.
10. Sunlight can cure depression. The noon sunshine can deliver 100,000 lux. When we sit in offices for the best part of the day, out of the sun, under neon and artificial lights (150-600 lux), we are depriving ourselves of the illumination of nature. Sunlight deprivation can cause a condition called seasonal affective disorder (SAD), a form of depression. It is more common in winter months, but also common in people who work long hours in office buildings .Exposure to the sun should be done SLOWLY! If you are not used to the sun, then your skin will be more sensitive to it. Avoid sunburn by building up your tolerance SLOWLY. There are many known benefits of sunlight on mood and health, but regular sunlight exposure also can have long-lasting, positive effects on bone health, heart health, immunity and disease prevention. Sunlight often serves to encourage exercise, physical activity, travel and social interactions.
To know more visit www.yogagurusuneelsingh.com Pic By Addy
A prototype of an acoustic absorption movable panel passed here in the early stages of development. I had to say that it worked very well, hope to try a more definitive and well finished piece in the future.
Chlorophyll (ˈklɔːrəfɪl):
A green pigment, present in all green plants and in cyanobacteria, which is responsible for the absorption of light to provide energy for photosynthesis.
A variety of furniture styles and colours make this an inviting location for informal study. Easy access to power is provided from the ceiling mounted extension cables. Wireless access the the world wide web is also provided. Flexible screens for reconfiguration of space give students some privacy and help absorb sound.
Amsterdam
June 2012
THe Netherlands
Urban life in the Netherlands
Ricoh GRD IV
Please do not reproduce or use this picture without my explicit permission.
If you ask nicely I will probably say yes, just ask me first!
If you happen to be in one of my frames and have any objections to this.
Please contact me!
Please no glossy awards, scripted comments and big thumbnails back to your own work.
I will remove them...
The Briar carbine is a firearm designed for close and medium-range combat, in settings such as urban locations.
It utilizes the 4.8mm caseless round, giving it a high rate of fire, coupled with the weapon's even weight distribution and recoil-absorption system, makes full-automatic shooting more accurate.
Assembled using methane absorption band (CB2, MT2, MT3) images taken by Cassini on January 13 2008.
NASA/JPL-Caltech/SSI/Kevin M. Gill
Timberland 6 Inch Premium Waterproof Boots, Menâs Size 12, Wide, Wheat, Nubuck, TB010061, 100613640, Premium leather uppers, waterproof construction, Leather lining for comfort and durability, Rustproof hardware, anti-fatigue technology, 400 grams of PrimaLoft® insulation, Padded collar for a comfortable fit around the ankle, Anti-fatigue midsole and removable footbed for all-day comfort, lightweight cushioning and shock absorption, Rubber lug outsole is made with 10% plant-based materials, reddealsonline, redd3413,
Leiden
March 2012
The Netherlands
Urban life in the Netherlands
Ricoh GRD IV
Please do not reproduce or use this picture without my explicit permission.
If you ask nicely i will probably say yes, just ask me first!
If you happen to be in one of my frames and have any objections to this.
Please contact me!
All rights reserved
Line graph showing the relative amounts of light absoption at different light wavelengths of the photosynthetic pigments, Chlorophyll A and Chlorophyll B. Feel Free to use the photo but please don't forget to give credit to www.ledgrowlightshq.co.uk.Thanks!