a copper indium gallium selenide solar cell or cigs cell, sometimes ci g s or cis cell is a thin-film solar cell used to convert sunlight into electric power. it is manufactured by depositing a thin layer of copper, indium, gallium and selenium on glass or plastic backing, along with electrodes on the front and back to collect current. because the material has a high absorption coefficient .
molybdenum diselenide mose 2 is an inorganic compound of molybdenum and selenium.its structure is similar to that of mos 2. compounds of this category are known as transition metal dichalcogenides, abbreviated tmdcs.these compounds, as the name suggests, are made up of a transition metals and elements of group 16 on the periodic table of the elements. .
in rare cases, fields are treated with the crushed mineral, but most often more soluble salts are produced by chemical treatment of phosphate minerals. the most popular phosphate-containing minerals are referred to collectively as phosphate rock. the main minerals are fluorapatite ca 5 po 4 3 f cfa and hydroxyapatite ca 5 po 4 3 oh.
the united states and japan designate chromium as an essential nutrient, but the european food safety authority efsa , representing the european union, reviewed the question in 2014 and does not agree. most of the known and suggested mineral nutrients are of relatively low atomic weight, and are reasonably common on land, or for sodium and .
this is a list of pages in the scope of wikipedia:wikiproject elements along with pageviews.. to report bugs, please write on the community tech bot talk page on meta.. list. period: 2020-01-01 to 2020-01-31 . total views: 9,006,813 . updated: 16:52, 4 february 2020 utc
hafnium carbide is the most refractory binary compound known, with a melting point over 3890 c, and hafnium nitride is the most refractory of all known metal nitrides, with a melting point of 3310 c. this has led to proposals that hafnium or its carbides might be useful as construction materials that are subjected to very high temperatures.
the abundance of elements in earth's crust is shown in tabulated form with the estimated crustal abundance for each chemical element shown as mg/kg, or parts per million ppm by mass 10,000 ppm = 1% - the mass fraction of the element in the earth's crust, multiplied by the mass of the earth's crust. note that the noble gases are not included, as they form no part of the solid crust.
large-scale open pit gold mining began at cripple creek & victory gold mining company 's cresson mine and by 2003 had produced 1.62 million gold ounces. the cripple creek district has been the largest producer of gold in the state, with more than 22 million ounces mined. rio grande county. the summitville mine now a superfund site was served .
mineral is the standard: according to the usda; example, seven trust spinach, the organization that measures nutrient contents of foods, and the fda, the organization that regulates guidelines for food product labeling. in europe, the term minerals also applies, according to the european commission and efsa. --zefr 17:12, 6 july 2016 utc
physical properties atomic chromium is the fourth transition metal found on the periodic table, and has an electron configuration of 3d 5 4s 1. it is also the first element in the
the trioxide, which is volatile at high temperatures, is the precursor to virtually all other mo compounds as well as alloys. molybdenum has several oxidation states, the most stable being 4 and 6 bolded in the table at left . molybdenum vi oxide is soluble in strong alkaline water, forming molybdates moo 4 2− .
a single crystalline 1 cm 3 cube and a crystalline fragment of molybdenum, the latter created by electron beam melting.molybdenum is a silvery metal that has the sixth-highest melting point of any element. it readily forms hard, stable carbides, and for this reason it is often used in high-strength steel alloys. photo: alchemist-hp
rhenium is probably not found free in nature its possible natural occurrence is uncertain , but occurs in amounts up to 0.2% in the mineral molybdenite which is primarily molybdenum disulfide , the major commercial source, although single molybdenite samples with up to 1.88% have been found.
seaborgium is a synthetic chemical element with the symbol sg and atomic number 106. it is named after the american nuclear chemist glenn t. seaborg.as a synthetic element, it can be created in a laboratory but is not found in nature.it is also radioactive; the most stable known isotope, 269 sg, has a half-life of approximately 14 minutes.. in the periodic table of the elements, it is a d .
a compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. these semiconductors typically form in periodic table groups 13–15 old groups iii–v , for example of elements from the boron group old group iii, boron , aluminium , gallium , indium and from group 15 old group v, nitrogen , phosphorus , arsenic , antimony , bismuth .
dutch standards are environmental pollutant reference values i.e., concentrations in environmental medium used in environmental remediation, investigation and cleanup.. barring a few exceptions, the target values are underpinned by an environmental risk analysis wherever possible and apply to individual substances. in most cases, target values for the various substances are related to a .
the hoagland solution is a hydroponic nutrient solution that was developed by hoagland and snyder in 1933, refined by hoagland and arnon in 1938 and revised by arnon in 1950. it is one of the most popular solution compositions for growing plants in the scientific world at least with more than 15,000 citations listed by google scholar.