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Ketura (Kibbutz)
Ketura ( he, קְטוּרָה) is a kibbutz in southern Israel. Located north of Eilat in the Aravah Valley, it falls under the jurisdiction of Hevel Eilot Regional Council. In it had a population of . Name The name Ketura was taken from a nearby hill and wadi, and is also the name of the second wife of Abraham (). History Ketura was founded in November 1973 by a group of young American Jewish immigrants, most of them members of the Zionist youth movement Young Judaea. Difficulties in the early years frustrated many of the inhabitants of the kibbutz, which caused many of the founders to leave. At the same time, more Young Judaeans joined the community, along with a variety of other immigrants as well as Israel Boy and Girl Scouts Federation graduates. Ketura is in the Southern Arava - Hevel Eilot Regional Council. Today Ketura has about 165 members and several young families who are candidates to become members. During the year there are about 500 people living on Ketura, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zionist Youth Movement
A Zionist youth movement ( he, תנועות הנוער היהודיות הציוניות ''tnuot hanoar hayehudiot hatsioniot'') is an organization formed for Jewish children and adolescents for educational, social, and ideological development, including a belief in Jewish nationalism as represented in the State of Israel. Youth leaders in modern youth movements use informal education approaches to educate toward the movement's ideological goals. History Most Zionist youth movements were established in Eastern Europe in the early twentieth century, desiring the national revival of the Jewish people in their own homeland, and soon formed an active and integral part of the Zionist movement. All emphasised aliyah (emigration to the Land of Israel) and community, with many also focussing on a return to nature. Blau-Weiss is considered by some to have been the first Zionist youth movement. Established in Germany in 1912, its youth leaders were inspired by the culture of outings and hik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astaxanthin
Astaxanthin is a keto- carotenoid within a group of chemical compounds known as terpenes. Astaxanthin is a metabolite of zeaxanthin and canthaxanthin, containing both hydroxyl and ketone functional groups. It is a lipid-soluble pigment with red coloring properties, which result from the extended chain of conjugated (alternating double and single) double bonds at the center of the compound. Astaxanthin is produced naturally in the freshwater microalgae ''Haematococcus pluvialis'' and the yeast fungus ''Xanthophyllomyces dendrorhous'' (also known as ''Phaffia rhodozyma''). When the algae are stressed by lack of nutrients, increased salinity, or excessive sunshine, they create astaxanthin. Animals who feed on the algae, such as salmon, red trout, red sea bream, flamingos, and crustaceans (shrimp, krill, crab, lobster, and crayfish), subsequently reflect the red-orange astaxanthin pigmentation. Astaxanthin is used as a dietary supplement for human, animal, and aquaculture co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicellular Organism
A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms. All prokaryotes are unicellular and are classified into bacteria and archaea. Many eukaryotes are multicellular, but some are unicellular such as protozoa, unicellular algae, and unicellular fungi. Unicellular organisms are thought to be the oldest form of life, with early protocells possibly emerging 3.8–4.0 billion years ago. Although some prokaryotes live in colonies, they are not specialised cells with differing functions. These organisms live together, and each cell must carry out all life processes to survive. In contrast, even the simplest multicellular organisms have cells that depend on each other to survive. Most multicellular organisms have a unicellular life-cycle stage. Gametes, for example, are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haematococcus Pluvialis
''Haematococcus pluvialis'' is a freshwater species of Chlorophyta from the family Haematococcaceae. This species is well known for its high content of the strong antioxidant astaxanthin, which is important in aquaculture, and cosmetics. The high amount of astaxanthin is present in the resting cells, which are produced and rapidly accumulated when the environmental conditions become unfavorable for normal cell growth. Examples of such conditions include bright light, high salinity, and low availability of nutrients. ''Haematococcus pluvialis'' is usually found in temperate regions around the world. Their resting cysts are often responsible for the blood-red colour seen in the bottom of dried out rock pools and bird baths. This colour is caused by astaxanthin which is believed to protect the resting cysts from the detrimental effect of UV-radiation, when exposed to direct sunlight. Gallery H. pluvialis.jpg, ''H. pluvialis'' Haematococcus pluvialis flagellate.jpg, A single flagella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microalgae
Microalgae or microphytes are microscopic algae invisible to the naked eye. They are phytoplankton typically found in freshwater and marine systems, living in both the water column and sediment. They are unicellular species which exist individually, or in chains or groups. Depending on the species, their sizes can range from a few micrometers (μm) to a few hundred micrometers. Unlike higher plants, microalgae do not have roots, stems, or leaves. They are specially adapted to an environment dominated by viscous forces. Microalgae, capable of performing photosynthesis, are important for life on earth; they produce approximately half of the atmospheric oxygen and use the greenhouse gas carbon dioxide to grow photoautotrophically. "Marine photosynthesis is dominated by microalgae, which together with cyanobacteria, are collectively called phytoplankton." Microalgae, together with bacteria, form the base of the food web and provide energy for all the trophic levels above them. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ketura, Israel
Ketura ( he, קְטוּרָה) is a kibbutz in southern Israel. Located north of Eilat in the Arabah, Aravah Valley, it falls under the jurisdiction of Hevel Eilot Regional Council. In it had a population of . Name The name Ketura was taken from a nearby hill and wadi, and is also the name of Keturah, the second wife of Abraham (). History Ketura was founded in November 1973 by a group of young American Jews, American Jewish immigrants, most of them members of the Zionist youth movement Young Judaea. Difficulties in the early years frustrated many of the inhabitants of the kibbutz, which caused many of the founders to leave. At the same time, more Young Judaeans joined the community, along with a variety of other immigrants as well as Israel Boy and Girl Scouts Federation graduates. Ketura is in the Southern Arava - Hevel Eilot Regional Council. Today Ketura has about 165 members and several young families who are candidates to become members. During the year there are about 50 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knesset
The Knesset ( he, הַכְּנֶסֶת ; "gathering" or "assembly") is the unicameral legislature of Israel. As the supreme state body, the Knesset is sovereign and thus has complete control of the entirety of the Israeli government (with the exception of checks and balances from the courts and local governments). The Knesset passes all laws, elects the president and prime minister (although the latter is ceremonially appointed by the President), approves the cabinet, and supervises the work of the government, among other things. In addition, the Knesset elects the state comptroller. It also has the power to waive the immunity of its members, remove the president and the state comptroller from office, dissolve the government in a constructive vote of no confidence, and to dissolve itself and call new elections. The prime minister may also dissolve the Knesset. However, until an election is completed, the Knesset maintains authority in its current composition. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
