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308篇 您的检索式:作者名="Messick"
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1世界硫需求及硫肥状况显示文摘阐述世界硫肥的需求状况:到2012年世界农业缺硫量预计每年将达1 100万t,而亚洲和美洲将成为全球最严重的缺硫地区。环境污染控制、集约化农业生产以及低硫高浓度肥料的使用,加剧了全球范围内土壤缺硫状况。缺硫日益成为农业可持续发展和提高肥料利用率的限制因素之一,但也刺激农用硫肥的需求,为肥料工业开发新技术和新产品、开拓市场提供了契机。有3种硫肥,分别是:(1)硫酸盐基;(2)硫磺基;(3)液态硫基,其中硫酸盐基占绝大部分,其具有较好的理化特性,可直接、均衡为作物提供多种养分。本文介绍含硫肥料的种类、各种肥料的性能及目前世界上开发多种新型含硫肥料产品来适应和满足不同作物、土壤的需要。樊明宪 D. L. Messick C. de Brey 汤建伟 穆荣哲 2005磷肥与复肥2005,20,6:8
2Arterial vs venous blood gas differences during hemorrhagic shock显示文摘AIM: To characterize differences of arterial(ABG) and venous(VBG) blood gas analysis in a rabbit model of hemorrhagic shock. METHODS: Following baseline arterial and venous blood gas analysis, fifty anesthetized, ventilated New Zealand white rabbits were hemorrhaged to and maintained at a mean arterial pressure of 40 mm Hg until a state of shock was obtained, as defined by arterial p H ≤ 7.2 and base deficit ≤-15 mmol/L. Simultaneous ABG and VBG were obtained at 3 minute intervals. Comparisons of p H, base deficit, p CO2, and arteriovenous(a-v) differences were then made between ABG and VBG at baseline and shock states. Statistical analysis was applied where appropriate with a significance of P < 0.05. RESULTS: All 50 animals were hemorrhaged to shockstatus and euthanized; no unexpected loss occurred. Significant differences were noted between baseline and shock states in blood gases for the following parameters: p H was significantly decreased in both arterial(7.39 ± 0.12 to 7.14 ± 0.18) and venous blood gases(7.35 ± 0.15 to 6.98 ± 0.26, P < 0.05), base deficit was significantly increased for arterial(-0.9 ± 3.9 m Eq/L vs-17.8 ± 2.2 m Eq/L) and venous blood gasses(-0.8 ± 3.8 m Eq/L vs-15.3 ± 4.1 m Eq/L, P < 0.05). p CO2 trends(baseline to shock) demonstrated a decrease in arterial blood(40.0 ± 9.1 mm Hg vs 28.9 ± 7.1 mm Hg) but an increase in venous blood(46.0 ± 10.1 mm Hg vs 62.8 ± 15.3 mm Hg), although these trends were non-significant. For calculated arteriovenous differences between baseline and shock states, only the p CO2 difference was shown to be significant during shock.CONCLUSION: In this rabbit model, significant differences exist in blood gas measurements for arterial and venous blood after hemorrhagic shock. A widened p CO2 a-v difference during hemorrhage, reflective of poor tissue oxygenation, may be a better indicator of impending shock.Kristopher Burton Williams Ashley Britton Christmas Brant Todd Heniford Ronald Fong Sing Joseph Messick 2014World Journal of Critical Care Medicine2014,3,2:6
3中国农业中硫肥的重要性显示文摘 我十分荣幸地在合肥欢迎大家参加这次由安徽农业大学、安徽省农垦事业管理局和国际硫研究所(The Sulphur Institute, TSI)共同主办的国际研讨会.这是TSI在中国组织的第四次专门探索中国农业中硫的需求的国际研讨会.……D L Messick 2000安徽农业大学学报2000,27,z1:4
4世界农业中硫肥研究和应用显示文摘近20年来,作物生产中硫肥的研究和经营管理已在世界各地开展起来.由于SO2排放量的降低,高效复合肥作为主要肥料的施用,以及农业生产更加集约化,缺硫已日益成为大多数农业体系中持续发展的重要议题.在北美,缺硫常出现在温带地区,因为那里降水和灌水能提供的硫很少,况且黄土和岩浆岩母质发育的土壤本底含硫量就很低.有25%的缺N土壤,也缺S.这些土壤除非配施了S肥,否则,仅施N肥的效果很低.北美在作物施硫效应、土壤测定方法的发展,以及S肥施用的推广等方面,都取得了相当多的成果.在加拿大和美国施用硫11~56 kg/ha已在实际生产中广泛采用.在欧洲,由于SO2排放量的降低以及农业集约化经营,包括高效无硫复合肥的施用,使欧洲农业生产走向恶化.欧洲北部农作区的缺硫已成为耕地作物的障碍因子.根据一项采用土壤、大气沉降和气象资料所设计的质量评估模式显示,在英国(UK)有11%的土地处于严重缺硫区,22%属中等缺硫区.如果在该国SO2排放量到2003年降低到1986年排放量的60%,那么,将有23%的农田成为严重缺硫区,27%成为中等缺硫区,这实际上相当于该国的全部可耕地.亚洲农业对硫肥需求量的增加将是最高的.近20年来通过不断增加N肥的用量来加强农业生产的集约化,导致了营养的不平衡,使作物广泛缺硫.大量试验结果表明,在中国主要农作区大约有30%的土壤(大约相当于3000万公顷的面积)是缺硫的.印度在研究土壤S状况和农业中硫肥施用技术方面取得了很大进展.目前,印度有30%的土壤缺硫.40多种大田作物施用硫肥有积极效果;15个州130个地区的5100万公顷(相当于印度16900万公顷耕地的30%)基本上肯定在不同程度上缺硫.对一些州的主要作物,硫肥的特别推荐用量是20~50 kg/ha.施用硫肥可增加产量,改善品质,其经济效益一般都超过了硫肥成本.这种产投比的提高,最终增加了生产效率和农民的经济收入.1995年全世界通过施肥而进入土壤中的硫仅为910万吨,其中73%是以硫铵和普钙中的S施入的.目前,对每年世界硫亏缺量的估计表明作物生产中硫的需求量增加了730万吨.如果粮食生产继续按现有速度增长,那么,在生产增长和继续需硫的情况下,估计世界硫肥市场的年平均增长率将会是3.7%,到2007年达到1050万吨.D L Messick M X Fan 2000安徽农业大学学报2000,27,z1:2
5中国农业持续发展中的硫肥及其重要性显示文摘在现在农业生产中,增施肥料不失为一个作物增产的战略措施.硫和N、P、K一样,是植物不可缺乏的营养元素.近年来在中国卓有成效的研究,已经取得了显著的成果.现已了解到缺硫正越来越成为农业持续增产中的限制因子之一.1994年以来,已经在17个省进行了110个田间硫肥试验.为了查清土壤硫肥力状况,已对10000多个农田土壤样品进行分析.结果表明,在中国,大约有30%土壤缺硫.特别是安徽、黑龙江、河南、江西、吉林、辽宁、陕西和云南等省,土壤缺硫面积较大.农业土壤的缺硫不仅仅由于土壤本身性质(如质地和有机质含量)所决定,而且与施肥和种植制度也密切相关.在中国,施用硫肥已明显地提高了稻、麦、玉米、马铃薯、大豆、花生、油菜、棉花、蕃茄、茶叶、甘蔗和甜菜等主要作物的产量.从总的情况来看,旱地作物,如花生、大豆、玉米、烟草、油料和糖料作物施硫效果更好.硫肥的施用也改进了作物品质,增加了它们的市场价值.这一点对油菜、甘蔗和茶叶来说,意义尤为重要.对中国S平衡的分析表明,1995年S亏缺量为90万吨,占总需求量的27%.到2010年,S亏缺量增加到230万吨.这些分析指出,随着农业生产的不断提高和无硫高效肥料的继续施用,中国农业中严重缺硫问题将不可避免地发生.因此,只有从有效地提供S肥的战略高度出发,才能保持农业的持续发展.据推测,在未来的10年中,中国的硫肥使用将会显著增加,包括S在内的平衡施肥,将对中国农业作出更大贡献.M X Fan D L Messick 2000安徽农业大学学报2000,27,z1:2
6Validity of psychological assessment: Validation of inferences from person's responses and performance as scientific inquiry into scoring meaning 显示文摘Messick S 1995American Psychologists1995,,9:1
7Development and evaluation of a polymerase chain re-action assay using the 16S rRNA gene for detection of Eperythrozoon suis infection显示文摘Messick J B Cooper S K Huntley M 1999J Vet DiagnInvest1999,11,3:1
8Development and evaluation of a polymerase chain reaction assay using the 16S rRNA gene for detection of Eperythrozoon suis infection显示文摘MESSICK J B COOPERS K HUNTLEY M 1999J Vet Diagn Invest1999,11,3:1
9The Interplay of Evidence anti Consequences in the Validation of Performance Assessments显示文摘Messick S 1994Educational Researcher1994,23,2:1
10Diagnosis and treatment of Babesia odocoilei in captive reindeer CRangifer tar-andus tarandus ) and recognition of three novel host species显示文摘Bartlett S L Abou-Madi N Messick I B I Zoo Wildl Med Z009 400)0,,:1
11Validity and washback in language testing 显示文摘Messick S 1996Language Testing1996,,:1
12Hemotrophic mycoplasmas(hemoplasmas):a review and new insights into pathogenic potential显示文摘MESSICK J B 2004Vet Clin Pathol2004,33,1:1
13Validity and Washback in Language Testing显示文摘MESSICK S 1996Lan- guage Testing1996,13,3:1
14The current status of S in Chinese agriculture显示文摘Fan M X Messick D L 1997Sulphur in Agriculture1997,20,:1
15Validity and washback in language testing显示文摘Messick S 1996Language Testing1996,13,:1
16Detection of Haemobartonella felis in cats with experimentally induced acute and chronic infections,using a polymerase chain reaction assay显示文摘BERENT L M MESSICK J B COOPERS K 1998J Vet Res1998,59,10:1
17Development andevaluation of a polymerase chain reaction assay using the 16S rRNAgene for detection of Eperythrozoon suis infection显示文摘MESSICK J B COOPER S K HUNTLEY M 1999J Vet DiagnInvest1999,11,3:1
18Hemotrophic mycoplasmas (hemoplasmas) :a review and new insights into pathogenic potential 显示文摘Joanne B Messick 2004Veterinary Clinical Pathology2004,33,1:1
19Validity and Washback in Language Testing 显示文摘Messick S 1996Language Testing1996,,13:1
20Hematodinium perezi infections in adult and juvenile blue crabs Callinectes sapidus from coastal bays of Maryland and Virginia, USA 显示文摘Messick G A 1994Dis Aqua Org1994,19,:1
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