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The Zambia National Service, abbreviated ZNS, is part of the Zambian Defence Force, has been a cornerstone of national development since its establishment in 1971 through an Act of Parliament. [3] [4] Committed to the twin objectives of training civilian and safeguarding the territorial integrity of Zambia, [5] [6] [7] the ZNS Act empowers them ...
Zinc sulfide (or zinc sulphide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite. Although this mineral is usually black because of various impurities, the pure material is white, and it is widely used as a pigment.
Military ranks of Zambia. The Military ranks of Zambia are the military insignia used by the Zambian Defence Force. Zambia is a landlocked country, and does therefore not possess a navy. Zambia shares a rank structure similar to that of the United Kingdom. [1]
Sphalerite is a sulfide mineral with the chemical formula ( Zn, Fe) S. [5] It is the most important ore of zinc. Sphalerite is found in a variety of deposit types, but it is primarily in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide deposits.
With oxidants such as chalcogens and halogens, Zn forms binary compounds such as ZnS and ZnCl 2. Binary compounds The Wurtzite structure, showing the tetrahedral environment of both Zn and S atoms a unit cell of zincblende. Zinc oxide, ZnO, is the most important manufactured compound of zinc, with a wide variety of uses.
Zinc sulfide (ZnS) is used in luminescent pigments such as on the hands of clocks, X-ray and television screens, and luminous paints. Crystals of ZnS are used in lasers that operate in the mid-infrared part of the spectrum. Zinc sulfate is a chemical in dyes and pigments. Zinc pyrithione is used in antifouling paints.
2 ZnO + ZnS + 3 Se → 3 ZnSe + SO 2. It is a wide-bandgap semiconductor of the II-VI semiconductor group (since zinc and selenium belong to the 12th and 16th groups of the periodic table, respectively). The material can be n-type doped with, for instance, halogen elements. P-type doping is more difficult, but can be achieved by introducing gallium
VNG Corporation ( Vietnamese: CTCP VNG, lit. 'VNG JSC '), also recognized by its former brand name, VinaGame ( VNG ), is a Vietnamese technology company founded in 2004. It specialises in digital content, online entertainment, social networking, and e-commerce. [2] Its focus is on four main businesses, including online games, platforms, digital ...