View allAll Photos Tagged environments...
Preparation of a Niskin bottle used to sample seawater.
IAEA experts visited Japan from 8 to 14 September 2014 and -- together with staff from NRA and the Ministry of Foreign Affairs -- collected water samples from the sea at five locations near TEPCO's Fukushima Daiichi Nuclear Power Station,
The water samples were shared both between the IAEA Environmental Laboratories and the Japanese Laboratories to e=be analyzed independently.
Photo Credit: NRA
Homogenisation of a seawater sample.
IAEA experts visited Japan from 8 to 14 September 2014 and -- together with staff from NRA and the Ministry of Foreign Affairs -- collected water samples from the sea at five locations near TEPCO's Fukushima Daiichi Nuclear Power Station,
The water samples were shared both between the IAEA Environmental Laboratories and the Japanese Laboratories to e=be analyzed independently.
Photo Credit: NRA
Cape Verde has been recognized as a global hotspot for terrestrial and marine biodiversity and United Nations in Cape Verde is actively involved in promoting environmental sustainability for the people and its' future generations of Cape Verde. On the island of Maio, two projects funded by GEF Small Grants Programme, are making the difference in shaping the minds and actions of the people.
"Marine Turtles Protection" is the first turtle conservation project in the history of the island involving the active participation of local communities and fishermen to protect Loggerhead Turtles. The project enables 17 fishermen and local people to be employed to patrol the beaches from June to October for the nesting and the hatchlings of the turtles. The local youth are also taking part in the conservation project by visiting the project sites and learning about the life cycle of the turtles and the eco-system of the island. The youth also had the opportunity to share their findings by organizing a theater performance at the municipality's festivals. Theater is relatively new to Maio and the play combined traditional story-telling techniques with an emphasis of turtle conservation andthe importance of preserving the natural environment.
This is a positive change in the increased awareness of the people where before, the hunting of turtles for their meat and eggs was common practice across the islands and egg predation by humans and other predators, had almost wiped out the breeding turtle population of the island.The project is also in alignment with Biodiversity Strategy and Action Plan (BSAP), a national government policy priority, which is also linked to the Convention on Biological Diversity (CBD). The project is really a local-to-global contribution.
"Revitalizing the Porto Ingles Wetlands" is also a unique cooperative project,empowering 70local women working in salt extraction. Porto Ingles Wetlandsinclude the largest «salina» in Cape Verdewith a heritage of salt extraction since the late 16th century. The entire salt production process in Maio is managed and operated by local women, and these women are proud and motivated in further improving their professional skills by actively participating in a technical exchange program to increase salt production with women from similar projects in Guinea Bissau, West Africa.The UN in Cape Verde will continue work with the Government, civil society, private sector, development partners, and families to promote sustainable development. After all, the women in Porto Ingles Wetlands have definitely illustrated that by working together and sharing experiences, they are not only helping each other to enhance the quality of life for themselves, but also are contributing to the lives of the people in Cape Verde and it's neighboring countries.
In addition,the project not only promotes sustainable traditional livelihoods of these women, it also promotes biodiversity by protecting and re-vitalizing the wetlands. The wetland attracts a wide variety of birds,including endemic species, for breeding and feeding.A protected fence is scheduled to be built to preserve and to develop this area as a natural reserve to incorporate eco-tourism as a unique bird-watching site in Cape Verde. The flocks of flamingo canalso be observed when visiting the Porto Ingles Wetlands.
Both projects, while aimed at issues related to MDG7, (Ensure Environmental Sustainability), have the added benefits of addressing poverty eradication and other MDG1 targets. The UN in Cape Verde and GEF Small Grants Programme continue to be committed to promoting sustainable livelihoods of the people by protecting the environment and utilizing the natural resources.
Article writen by Masakazu Shibata / One UN Communication Officer
Sampling boat returning to harbour after completion of sampling.
IAEA experts visited Japan from 8 to 14 September 2014 and -- together with staff from NRA and the Ministry of Foreign Affairs -- collected water samples from the sea at five locations near TEPCO's Fukushima Daiichi Nuclear Power Station,
The water samples were shared both between the IAEA Environmental Laboratories and the Japanese Laboratories to e=be analyzed independently.
Photo Credit: NRA
Last week the University’s School of the Built Environment celebrated its close links with employers at a special prize-giving ceremony for students that followed Wednesday’s graduation ceremony.
www.salford.ac.uk/built-environment/about-us/built-enviro...
Environment- california based company shows their line of sustainable furniture environmentfurniture.com/
Transfer of collected seawater sample into IAEA container.
IAEA experts visited Japan from 8 to 14 September 2014 and -- together with staff from NRA and the Ministry of Foreign Affairs -- collected water samples from the sea at five locations near TEPCO's Fukushima Daiichi Nuclear Power Station,
The water samples were shared both between the IAEA Environmental Laboratories and the Japanese Laboratories to e=be analyzed independently.
Photo Credit: NRA
Preparations for transport of collected samples after completion of the mission.
IAEA experts visited Japan from 8 to 14 September 2014 and -- together with staff from NRA and the Ministry of Foreign Affairs -- collected water samples from the sea at five locations near TEPCO's Fukushima Daiichi Nuclear Power Station,
The water samples were shared both between the IAEA Environmental Laboratories and the Japanese Laboratories to e=be analyzed independently.
Photo Credit: NRA
Photo by Bruno Locatelli/CIFOR
If you use one of our photos, please credit it accordingly and let us know. You can reach us through our Flickr account or at: cifor-mediainfo@cgiar.org and m.edliadi@cgiar.org
The goal of integration should be to make the environment easy to use by offering the highest possible level of synergy between the elements that constitute the environment.
Ashley Jones – Bold and the Beautiful
Celebrities pictured above are not spokespeople for Miracle Toilet Faucet Inc. or otherwise commercially affiliated with Miracle Toilet Faucet Inc.
Quick-Look Hill-shaded Colour Relief Image of 2014 2m LIDAR Composite Digital Terrain Model (DTM).
Data supplied by Environment Agency under the Open Government License agreement. For details please go to: www.nationalarchives.gov.uk/doc/open-government-licence/v...
For full raster dataset go to: environment.data.gov.uk/ds/survey
Last week the University’s School of the Built Environment celebrated its close links with employers at a special prize-giving ceremony for students that followed Wednesday’s graduation ceremony.
www.salford.ac.uk/built-environment/about-us/built-enviro...
Environment day pictures by BWS are displayed at Sasken also.
There was a very good response.
Shot this in the evening after the viewers left.
( Unfortunately I could not shot when there was crowd. )
Data logging is #one of the ability of #hearing aid to track and learn the #hearingaid users preferences in various listening #environments this information can assist the #best #audiologist in making future #programming adjustments and allows the hearing aid to #program with users preferences visit one of the nearby #adro hearing aid #center and book online #appointments
Presentation by environmental activist Ross Mirkarimi hosted by DERES and the U.S. Embassy Montevideo. DERES is a non-profit business organization that promotes corporate social responsibility (CSR) in Uruguay.
San Francisco District 5 Supervisor Ross Mirkarimi introduced legislation in 2007 that prohibits large supermarkets and drugstores from providing customers with non-biodegradable plastic bags, making San Francisco the first city to regulate such bags. Since then other cities around the country and in Europe have take up similar bans.
[U.S. Embassy photo by Pablo Castro]
Last week the University’s School of the Built Environment celebrated its close links with employers at a special prize-giving ceremony for students that followed Wednesday’s graduation ceremony.
www.salford.ac.uk/built-environment/about-us/built-enviro...
Last week the University’s School of the Built Environment celebrated its close links with employers at a special prize-giving ceremony for students that followed Wednesday’s graduation ceremony.
www.salford.ac.uk/built-environment/about-us/built-enviro...
Aragonite is a carbonate mineral, one of the three most common naturally occurring crystal forms of calcium carbonate, CaCO3 (the other forms being the minerals calcite and vaterite). It is formed by biological and physical processes, including precipitation from marine and freshwater environments.
Aragonite Crystal Structure
The crystal lattice of aragonite differs from that of calcite, resulting in a different crystal shape, an orthorhombic crystal system with acicular crystal.[5] Repeated twinning results in pseudo-hexagonal forms. Aragonite may be columnar or fibrous, occasionally in branching helictitic forms called flos-ferri ("flowers of iron") from their association with the ores at the Carinthian iron mines.[6]
Occurrence
The type location for aragonite is Molina de Aragón in the Province of Guadalajara in Castilla-La Mancha, Spain, for which it was named in 1797.[7] Aragonite is found in this locality as cyclic twins inside gypsum and marls of the Keuper facies of the Triassic.[8] This type of aragonite deposit is very common in Spain, and there are also some in France.[6]
An aragonite cave, the Ochtinská Aragonite Cave, is situated in Slovakia.[9]
In the US, aragonite in the form of stalactites and "cave flowers" (anthodite) is known from Carlsbad Caverns and other caves.[10] For a few years in the early 1900s, aragonite was mined at Aragonite, Utah (now a ghost town).[11]
Massive deposits of oolitic aragonite sand are found on the seabed in the Bahamas.[12]
Aragonite is the high pressure polymorph of calcium carbonate. As such, it occurs in high pressure metamorphic rocks such as those formed at subduction zones.[13]
Aragonite forms naturally in almost all mollusk shells, and as the calcareous endoskeleton of warm- and cold-water corals (Scleractinia). Several serpulids have aragonitic tubes.[14] Because the mineral deposition in mollusk shells is strongly biologically controlled,[15] some crystal forms are distinctively different from those of inorganic aragonite.[16] In some mollusks, the entire shell is aragonite;[17] in others, aragonite forms only discrete parts of a bimineralic shell (aragonite plus calcite).[15] The nacreous layer of the aragonite fossil shells of some extinct ammonites forms an iridescent material called ammolite.[18]
Aragonite also forms naturally in the endocarp of Celtis occidentalis.[19]
Aragonite also forms in the ocean inorganic precipitates called marine cements (in the sediment) or as free crystals (in the water column).[20][21] Inorganic precipitation of aragonite in caves can occur in the form of speleothems.[22] Aragonite is common in serpentinites where magnesium-rich pore solutions apparently inhibit calcite growth and promote aragonite precipitation.[23]
Aragonite is metastable at the low pressures near the Earth's surface and is thus commonly replaced by calcite in fossils. Aragonite older than the Carboniferous is essentially unknown.[24] It can also be synthesized by adding a calcium chloride solution to a sodium carbonate solution at temperatures above 60 °C (140 °F) or in water-ethanol mixtures at ambient temperatures.[25]
Physical properties
Aragonite is not the thermodynamically stable phase of calcium carbonate at any pressure below about 3,000 bars (300,000 kPa) at any temperature.[26] Aragonite nonetheless frequently forms in near-surface environments at ambient temperatures. The weak Van der Waals forces inside aragonite give an important contribution to both the crystallographic and elastic properties of this mineral.[27] The difference in stability between aragonite and calcite, as measured by the Gibbs free energy of formation, is small, and effects of grain size and impurities can be important. The formation of aragonite at temperatures and pressures where calcite should be the stable polymorph may be an example of Ostwald's step rule, where a less stable phase is the first to form.[28] The presence of magnesium ions may inhibit calcite formation in favor of aragonite.[29] Once formed, aragonite tends to alter to calcite on scales of 107 to 108 years.[30] Comparing to the calcite, aragonite
The mineral vaterite, also known as μ-CaCO3, is another phase of calcium carbonate that is metastable at ambient conditions typical of Earth's surface, and decomposes even more readily than aragonite.[31][32]
Uses
In aquaria, aragonite is considered essential for the replication of reef conditions. Aragonite provides the materials necessary for much sea life and also keeps the pH of the water close to its natural level, to prevent the dissolution of biogenic calcium carbonate.[33]
Aragonite has been successfully tested for the removal of pollutants like zinc, cobalt and lead from contaminated wastewaters.[34]
Claims that magnetic water treatment can reduce scaling, by converting calcite to aragonite, have been met with skepticism,[35] but continue to be investigated.[36][37]
References
Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
pubmed.ncbi.nlm.nih.gov/34876711/
geologyscience.com/minerals/aragonite/
Bragg, William Lawrence (1924-01-01). "The structure of aragonite". Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character. 105 (729): 16–39. Bibcode:1924RSPSA.105...16B. doi:10.1098/rspa.1924.0002. ISSN 0950-1207.
Sinkankas, John (1964). Mineralogy for amateurs. Princeton, N.J.: Van Nostrand. pp. 371–372. ISBN 0442276249.
Cairncross, B.; McCarthy, T. (2015). Understanding Minerals & Crystals. Cape Town: Struik Nature. p. 187. ISBN 978-1-43170-084-4.
Calvo, Miguel (2012). Minerales y Minas de España. Vol. V. Carbonatos y Nitratos. Madrid: Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. pp. 314–398. ISBN 978-84-95063-98-4.
Pukanská, Katarína; Bartoš, Karol; Bella, Pavel; Gašinec, Juraj; Blistan, Peter; Kovanič, Ľudovít (4 July 2020). "Surveying and High-Resolution Topography of the Ochtiná Aragonite Cave Based on TLS and Digital Photogrammetry". Applied Sciences. 10 (13): 4633. doi:10.3390/app10134633.
Gonzalez, Luis A.; Lohmann, Kyger C. (1988). "Controls on Mineralogy and Composition of Spelean Carbonates: Carlsbad Caverns, New Mexico". In James, Noel P.; Choquette, Philip W. (eds.). Paleokarst. New York: Springer-Verlag. pp. 81–101. doi:10.1007/978-1-4612-3748-8. ISBN 978-1-4612-3748-8.
Balaz, Christine (2009). An Explorer's Guide: Utah. Vermont: The Countryman Press. p. 368. ISBN 978-0-88150-738-6.
Newell, Norman D.; Purdy, Edward G.; Imbrie, John (1960). "Bahamian Oölitic Sand". The Journal of Geology. 68 (5): 481–497. Bibcode:1960JG.....68..481N. doi:10.1086/626683. ISSN 0022-1376. S2CID 129571671.
Nesse, William D. (2000). Introduction to mineralogy. New York: Oxford University Press. pp. 336–337. ISBN 9780195106916.
Boggs, Sam (2006). Principles of sedimentology and stratigraphy (4th ed.). Upper Saddle River, N.J.: Pearson Prentice Hall. pp. 161–164. ISBN 0131547283.
Belcher, A. M.; Wu, X. H.; Christensen, R. J.; Hansma, P. K.; Stucky, G. D.; Morse, D. E. (May 1996). "Control of crystal phase switching and orientation by soluble mollusc-shell proteins". Nature. 381 (6577): 56–58. Bibcode:1996Natur.381...56B. doi:10.1038/381056a0. S2CID 4285912.
Chateigner, D.; Ouhenia, S.; Krauss, C.; Belkhir, M.; Morales, M. (February 2010). "Structural distortion of biogenic aragonite in strongly textured mollusc shell layers". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 268 (3–4): 341–345. Bibcode:2010NIMPB.268..341C. doi:10.1016/j.nimb.2009.07.007.
Loftus, Emma; Rogers, Keith; Lee-Thorp, Julia (November 2015). "A simple method to establish calcite:aragonite ratios in archaeological mollusc shells: CALCITE:ARAGONITE IN ARCHAEOLOGICAL SHELLS". Journal of Quaternary Science. 30 (8): 731–735. doi:10.1002/jqs.2819. S2CID 130591343.
Mychaluk, Keith A.; Levinson, Alfred A.; Hall, Russel L. (Spring 2001). "Ammolite: Iridescent fossilized ammonite from southern Alberta, Canada" (PDF). Gems & Gemology. 37 (1): 4–25. doi:10.5741/GEMS.37.1.4. Retrieved 1 August 2021.
Wang, Jang; Jahren, A. Hope; Amundsen, Ronald (1996). "Potential For [Carbon 14] Dating Of Biogenic Carbon In Hackberry (Celtis) Endocarps" (PDF). Quaternary Research. 47: 337–343. doi:10.1006/qres.1997.1894. S2CID 49232599.[permanent dead link]
Bialik, Or M.; Sisma-Ventura, Guy; Vogt-Vincent, Noam; Silverman, Jacob; Katz, Timor (24 September 2022). "Role of oceanic abiotic carbonate precipitation in future atmospheric CO2 regulation". Scientific Reports. 12 (1): 15970. doi:10.1038/s41598-022-20446-7. PMC 9509385. PMID 36153366.
Tucker, Maurice E. (1990). Carbonate sedimentology. Oxford [England]: Blackwell Scientific Publications. ISBN 9781444314175.
Nesse 2000, p. 337.
Bonatti, E.; Lawrence, J.R.; Hamlyn, P.R.; Breger, D. (August 1980). "Aragonite from deep sea ultramafic rocks". Geochimica et Cosmochimica Acta. 44 (8): 1207–1214. Bibcode:1980GeCoA..44.1207B. doi:10.1016/0016-7037(80)90074-5.
Runnegar, B. (1987). "Shell microstructures of Cambrian molluscs replicated by phosphate". Alcheringa: An Australasian Journal of Palaeontology. 9 (4): 245–257. doi:10.1080/03115518508618971.
Sand, K.K., Rodriguez-Blanco, J.D., Makovicky, E., Benning, L.G. and Stipp, S. (2012) Crystallization of CaCO3 in water-ethanol mixtures: spherulitic growth, polymorph stabilization and morphology change. Crystal Growth & Design, 12, 842-853. doi:10.1021/cg2012342.
Carlson, W.D. (1980). "The calcite–aragonite equilibrium: effects of Sr substitution and anion orientational disorder". American Mineralogist. 65 (11–12): 1252–1262. Retrieved 31 July 2021.
Ulian, Gianfranco; Valdrè, Giovanni (2022-09-01). "Structural and elastic behaviour of aragonite at high-pressure: A contribution from first-principle simulations". Computational Materials Science. 212: 111600. doi:10.1016/j.commatsci.2022.111600. ISSN 0927-0256. S2CID 250059382.
Fyfe, W.S. (1964). "Calcite aragonite problem" (PDF). AAPG Bulletin. 48 (4): 526. Retrieved 31 July 2021.
Kitano, Yasushi; Park, Kilho; Hood, Donald W. (November 1962). "Pure aragonite synthesis". Journal of Geophysical Research. 67 (12): 4873–4874. Bibcode:1962JGR....67.4873K. doi:10.1029/JZ067i012p04873.
Blatt, Harvey; Middleton, Gerard; Murray, Raymond (1980). Origin of sedimentary rocks (2d ed.). Englewood Cliffs, N.J.: Prentice-Hall. ISBN 0136427103.
Ni, M.; Ratner, B.D. (2008). "Differentiation of Calcium Carbonate Polymorphs by Surface Analysis Techniques – An XPS and TOF-SIMS study". Surf. Interface Anal. 40 (10): 1356–1361. doi:10.1002/sia.2904. PMC 4096336. PMID 25031482.
Kamiya, Kanichi; Sakka, Sumio; Terada, Katsuyuki (November 1977). "Aragonite formation through precipitation of calcium carbonate monohydrate". Materials Research Bulletin. 12 (11): 1095–1102. doi:10.1016/0025-5408(77)90038-1.
Orr, J. C., et al. (2005) Anthropogenic ocean acidification over the 21st century and its impact on calcifying organisms. Nature 437: 681-686
Köhler, S., Cubillas, et al. (2007) Removal of cadmium from wastewaters by aragonite shells and the influence of other divalent cations. Environmental Science and Technology, 41, 112-118. doi:10.1021/es060756j
Krauter, PW; Harrar, JE; Orloff, SP; Bahowick, SM (1996). "Test of a Magnetic Device for Amelioration of Scale Formation at Treatment Facility D" (PDF). Internal Report. Lawrence Livermore National Laboratory. doi:10.2172/567404. OSTI 567404. Retrieved 2009-12-11.
Coey, J.M.D. (November 2012). "Magnetic water treatment – how might it work?". Philosophical Magazine. 92 (31): 3857–3865. Bibcode:2012PMag...92.3857C. doi:10.1080/14786435.2012.685968. S2CID 96367372.
Kozic, Viljem; Hamler, Anton; Ban, Irena; Lipus, Lucija C. (October 2010). "Magnetic water treatment for scale control in heating and alkaline conditions". Desalination and Water Treatment. 22 (1–3): 65–71. doi:10.5004/dwt.2010.1549.
5 June 2014. El Fasher: A student participate at the final "call for action" during the celebration of the World Environment Day at El Fasher University, North Darfur.
The United Nations Environmental Programme (UNEP) and the North Darfur Ministry of Environment organized, with the support of UNAMID, an event with a photo exhibition, technical lectures and awareness information for students.
Photo by Albert Gonzalez Farran, UNAMID
These photos were created by Levi DeWitt in the 2018 fall semester as an honors project for GIT*411. The photos were taken at the Kansas Technology Center at Pittsburg State University. These images have a Creative Commons Attribution-NonCommercial license. They will be made available for free download and use by Pittsburg State University or any other group or individual.
Contact Levi DeWitt at dewizitt@gmail.com
5 June 2014. El Fasher: A local drama group performs a show at the celebration of the World Environment Day at El Fasher University, North Darfur.
The United Nations Environmental Programme (UNEP) and the North Darfur Ministry of Environment organized, with the support of UNAMID, an event with a photo exhibition, technical lectures and awareness information for students.
Photo by Albert Gonzalez Farran, UNAMID
This site was founded by David I in 1138, initially as a priory, it was upgraded to abbey by 1154. It took 70 years to build. It was occupied by Augustinian canons. Being in the Borders it suffered from many attacks and conflicts. The canons had to evacuate in the 1300s during the Wars of Independence. In 1305 Edward I stripped lead from the roof. Throughout these skirmishes the buildings were rebuilt several times. In 1548 the French fortified it as part of their support of the Scots against the English.
It also served as a royal castle. In 1285, Alexander III and his wife were married in the abbey church of St Mary the Virgin.
By 1560 only 8 canons remained in a small undamaged section. The church became the parish church until a new one was built in the late 1600s. Restoration work was undertaken by the Marquis of Lothian in 1875. It came under Historic Environment Scotland in 1913.
Krista Mikkonen, Minister of the Environment and Climate Change in Finland, speaking at the Ministers and Mayors on Buildings as Critical Climate Solution event, part of COP26, at the SEC, Glasgow. 11 November 2021. Photograph: Justin Goff/ UK Government
Last week the University’s School of the Built Environment celebrated its close links with employers at a special prize-giving ceremony for students that followed Wednesday’s graduation ceremony.
www.salford.ac.uk/built-environment/about-us/built-enviro...
Douglas Stout, vice president, Energy Solutions & External Relations for FortisBC (L) and Environment Minister Terry Lake check out the FortisBC clean energy vehicle that runs on natural gas at GLOBE 2012 in Vancouver. “The Green Economy is fundamental to our provincial well-being both economically and environmentally,” said Lake. “We are proud of our leadership on climate action, which has spurred innovation in clean technology.” - March 14, 2012
Learn More: www.bcge.ca/