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31 Nitrous oxide comes from car exhausts and from chemical fertilizers.

32 The booth has three hard-and-fast rules: No drugs (except the amyl nitrate and nitrous oxide we sell at the counter), no turning tricks, and always feed the meter if you want to stay in the booth.

33 The reaction of triphenyltin with nitrous acid in aqueous phase in the presence and absence of O2 was studied by a laser flash photolysis technique.

34 But The land can also release nitrous oxide, a heat - trapping gas.

35 Ultraviolet light and nitrous acid are the mutagens of choice for T. viride -285. They are highly effective when used together.

36 Objectives: To study the relationship between nocturnal penile tumescence and nitrous acid concentration changes in urine at night.

37 To test the theory, the team deposited either nicotine or tobacco smoke on sheets of paper, and exposed them to nitrous acid.

38 Ambient conditions that include toxic gases such as hydrogen sulfide, sulfurous acid, nitrous acid, chlorine, bromine, methyl bromide, ammonium, etc.

39 The land can also release nitrous oxide, a heat - trapping gas.

40 Helmont, it was first studied in 1772 by Joseph Priestley, who called it "nitrous air."

41 The EPA said its finding was based on a rigorous review of science on six greenhouse gases: carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride.

42 The land can also release nitrous oxide, a heat - gas.

43 If carbon dioxide is responsible for about one-half of human-related greenhouse gas warming since the industrial revolution, methane and nitrous oxide are responsible for another one-third.

44 Stratospheric influences on the tropospheric seasonal cycles of nitrous oxide and chlorofluorocarbons.

45 The yield and regioselectivity were investigated at various ratios of nitrate to salicylate with copper nitrate comparing with nitrous acid.

46 Bland The land can also release nitric nitrous oxide are heat trapping , a heat - trapping gas.

47 OLAND process is the novel biological denitri fi cation process developed based on the nitrous nitrification-anaerobic ammonia oxidation technology.

48 But The land can also release nitric outside by hit trapping nitrous oxide, a heat - gas.

49 In this paper, A new controlled depolymerization to chitosan - oligosaccharide from chitosan by nitrous acid is presented.

50 Objective To evaluate the advantages of nitrous oxide inhalation as an adjunct to local anaesthesia for the extraction oi impacted teeth in child patients.

51 This article studies the reactions of nitrous acid with eldest aromatic amine and diazonium salts substituted by halogen,[www.Sentencedict.com] and investigates the condition and mechanism of those reactions.

52 Objective : To observe the function of nitrous oxide mixture gas in labor and analyse its result.

53 This paper mainly studied the quality variation of China Toona such as Nitrous salt, Vitamin C, Total sugar, Chlorophyl, Protein during the process of sousing and storing.

54 Conclusion With good analgesic effect, uterus laxity , low probability of induced abortion syndrome and no more hemorrhage, disoprofol and nitrous oxide is good for painless induced abortion.

55 In the Netherlands the contributions of methane and nitrous oxide to the total emission of greenhouse gases are estimated to be 8% and 6% respectively.

56 Some farming practices and land - use changes increase the levels of methane and nitrous oxide.

57 The land can also nitrous oxide, a heat - trapping gas.

58 Purpose:Studies the removal effect on ammonia nitrogen, nitrous acid nitrogen, CODMn and turbidity during immobilized nitrobacterias pilot experiment, and provide reference for the actual project.

59 It has studied the action of hydrogen peroxide on nitrous acid.

60 Carbon monoxide and nitrous acid ester are synthesized through coupling reaction into diester carbonate in the presence of catalyst and at relatively low pressure and temperature.