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  • DERIVATIVES
  • For this reason, a small library of natural and synthetic nitrogen containing cyclic derivatives was assayed as activators of four human isoforms of carbonic anhydrase (hCA I, II, IV and VII). (mdpi.com)
  • nitrate
  • Nitrogen and sulfur quiz has multiple choice questions (MCQ), environmental problems caused by nitrogen compounds and nitrate fertilizers quiz questions and answers as which option is incorrect a bloom of algae, answer key with choices as provides food for aquatic life, blocks sunlight for aquatic life, utilize oxygen in water leaving lesser oxygen for rest of water life and forms a layer over water surface for competitive exam prep. (mcqslearn.com)
  • Free study guide is to learn environmental problems caused by nitrogen compounds and nitrate fertilizers quiz online with MCQs to practice test questions with answers. (mcqslearn.com)
  • Reactions
  • The partly substituted geminal ( 4d and 5d ) and cis -morpholino ( 6d ) phosphazenes were isolated from the reactions of excess morpholine in boiling THF and o -xylene, but the expected fully substituted compounds were not obtained. (springer.com)
  • The reactions of hexamethyldisilazane and trimethyl-N-methyl-aminosilane with amides and hydrazides of esters of phosphoric acid result in heterolysis of Si-N-compounds and trimethylsilyl-amides or -hydrazides of the corresponding phosphoric acid are formed. (dtic.mil)
  • begins with the emission of nitrogen oxide during the morning commuting hour, followed by the formation of nitrogen dioxide by oxygenation, and finally, through a complex series of reactions in the presence of hydrocarbons and sunlight, leads to the formation of ozone and peroxyacetyl nitrite and other irritant compounds. (britannica.com)
  • species
  • These contain various species of iron compounds such as iron carbides or nitrides besides the intended FeN4 centres", explains Sebastian Fiechter of HZB. (eurekalert.org)
  • Nitrogen fixation is the chemical process that transforms N 2 to other nitrogen species that are consumable for living organisms. (prompt.hu)
  • There is some information on various nitrogen-noble gas species, to a large extent because of the interest in their bonding behavior. (google.com.tw)
  • bacteria
  • A part of plants are supplied with consumable nitrogen nutrition by root symbionts such as legumes or nodule forming bacteria (Rhizobia). (prompt.hu)
  • Cyanobacteria is one of the free living nitrogen fixing bacteria, but note that cyanobacteria also has symbiotic form. (prompt.hu)
  • vitro
  • In addition, in vitro cytotoxic activities of fully substituted phosphazenes ( 4a - 6c ) against HeLa cervical cancer cell lines (ATCC CCL-2) and the compounds 4a and 4c against breast cancer cell lines (MDA-MB-231) and L929 fibroblast cells were evaluated, respectively. (springer.com)
  • Two natural compounds, namely l -(+)-ergothioneine ( 1 ) and melatonin ( 2 ), displayed K A s towards hCA VII in the nanomolar range after evaluation by a CO 2 hydration method in vitro, showing a rather efficient and selective activation profile with respect to histamine, used as a reference compound. (mdpi.com)
  • ammonia
  • Plants are able to take up nitrogen in reduced form of ammonia (NH 3 , Figure 6.3), nitrates (NO 3 ). (prompt.hu)
  • chemical
  • it will be of great value to those environmentalists who require a record of the available nitrogen removal methods from both biological and chemical viewpoints. (elsevier.com)
  • Figure 6.4: Chemical structure of nitrogen oxide. (prompt.hu)
  • soil
  • ii) Biological N fixation BNF: Diazotrophs are organisms in the soil that do not need fixed nitrogen, but they fix nitrogen in their metabolism. (prompt.hu)
  • These compounds are produced during the natural degradation of organic matter by soil microorganisms or are derived from animal excretion and may represent an alternative low-cost or backup source of nitrogen for plants. (plantcell.org)
  • content
  • DIGITAL.CSIC: Effects of water-deficit irrigation on hormonal content and nitrogen compounds in developing berries of Vitis vinifera L. cv. (csic.es)
  • Effects of water-deficit irrigation on hormonal content and nitrogen compounds in developing berries of Vitis vinifera L. cv. (csic.es)
  • known
  • The legume family (Fabaceae) are important in nitrogen fixation as they are well known to associate with symbiotic rhizobia (Figure 6.5, Figure 6.6, Figure 6.7). (prompt.hu)