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739篇 您的检索式:作者名="SPEARED J"
    题名 作者 年代 出处 被引量
1保水采煤方法及其适用性分区——以榆神矿区为例显示文摘为解决我国西北地区脆弱的生态环境与高强度煤炭开采之间的矛盾,以陕北榆神矿区典型水资源保护性采煤条件为例,研究西北浅埋煤层保水开采技术及其适用性分区。针对榆神矿区地质条件,确定出浅埋煤层采动覆岩导水裂隙带发育高度与保护层有效厚度,得到保水采煤的临界采高,即最大理论允许采高分布状况。系统分析限高开采、(局部)充填开采、窄条带开采等保水采煤条件下的岩层控制理论,及其保水机理与适用条件。在此基础上,进行榆神矿区保水采煤技术的适用性分区。马立强 余伊何 SPEARING A J S 2019采矿与安全工程学报2019,36,6:8
2加钼或未加钼的低铜日粮对牛的铜状态、生产性能和胴体品质的长期影响显示文摘用42头7月龄安格斯公牛进行试验,测定加钼或未加钼的低铜饲粮对牛的生产性能、胴体品质和铜状态的长期影响。断奶前28d给22头犊牛注射90mg铜,断奶后,饲粮中添加铜7.5mg/kg干物质,对照组不添加铜。在获得铜后第40d末,铜的添加量降低到5mg/kg干物质,施铜期后,每组1/2牛的日粮中添加钼5mg/kg干物质。生长期持续196d随后为49d的肥育期,饲喂高浓度饲粮。试验结果表明:注射铜提高了断奶时牛的血浆铜浓度(P<0.01)。从生长期开始补加铜的牛具有较高的血浆铜含量、血浆铜蓝蛋白活性、过氧化物歧化酶(SOD)活性和肝脏铜浓度(P<0.01)。补加钼降低了未添加铜组牛生长期和肥育期血浆铜含量、血浆铜蓝蛋白和过氧化物岐化酶活性,但对加铜组的牛无影响。添加铜提高了施铜期(P<0.05)和生长期(P<0.08)牛的干物质采食量(DMI)及肥育期牛的日增重量(ADG)和饲料转化效率(G/F)。补加铜的牛的背膘厚度较薄(P<0.06),肋部眼肌面积较大(P<0.09)。研究结果证明,饲粮铜浓度可能改变牛的生产性能和胴体品质。Ward J D Spears J W 郭艳丽 1999国外畜牧学(草原与牧草)1999,0,3:3
3An evaluation of methods for breaking seed dormancy in kudzu (Pueraria lobata)显示文摘Susko D J Mueller J P Spears J F 2001Can J Bot2001,79,:2
4Relationship of complement resistance and selected virulence factors in pathogenic avian Escherichia coli显示文摘Wooley R E Spears K R Brown J 1992Avian Dis1992,36,3:2
5Distinctiveness threat and prototypiality: combined effects on intergroup dis crimination and collective self-esteem显示文摘Jetten J Spears R Manstead A S R 1997European Journal of Social Psychology1997,27,6:1
6Dissolution of cellose with ionic liquids显示文摘SWATLOSKI R P SPEAR S K HOLBEY J D 2002J Am Chem Soc2002,124,:1
7Slurry, not paste,will be the fill of the future显示文摘SPEARING A J S STEWARD N R 1992Canadian Mining Journal1992,6,:1
8Production of bioactive cellulose films reconstituted from ionic liquids显示文摘Turner M B Spear S K Holbrey J D 2004Biomacromolecules2004,5,4:1
9Effects of organic forms of zinc on growth performance,tissue zinc distribution,and immune response of weanling pigs显示文摘Van Heugten E T Spears J W Kegley E B 2003J Anim Sci2003,81,:1
10Effects of dietary copper and molybdenum on copper status, cytokine production, and humoral immune response of calves 显示文摘Gengelbach G P Spears J W 1998J Dairy Sci1998,81,12:1
11Distributed, physics-based control of swarms of vehicles 显示文摘SPEARS W M SPEARS D F HAMANN J C 2004Autonomous Robots2004,17,2:1
12LIGHT, a New Member of the TNF Superfamily, and Lymphotoxin α Are Ligands for Herpesvirus Entry Mediator显示文摘Davide N Mauri Reinhard Ebner Rebecca I Montgomery Kristine D Kochel Timothy C Cheung Guo-Liang Yu Steve Ruben Marianne Murphy Roselyn J Eisenberg Gary H Cohen Patricia G Spear Carl F Ware 1998Immunity1998,,:1
13Endovascular treatment of intracranial aneurysms with matrix coils: immediate posttreatment results, clinical outcome and follow-up 显示文摘Kimchi TJ Willinsky RA Spears J 2007Neuroradiology2007,49,:1
14Effects of dietary copper and molybdenum on copper status, cytokine produc- tion,and humoral immune response of calves显示文摘Gengelbach G P Spears J W 1998J Dairy Sci1998,81,12:1
15Effects of dietary copper cource and concentration on carcass characteristics and lipid and cholesterol metabolism in growing and finishing steers显示文摘Engle T E Spears J W Armstrong T A 2000J Anim Sci2000,78,:1
16Clinical application of pharmacogenetics 显示文摘Spear BB Heath-Chiozzi M Huff J 2001Trends Molecular Medicine2001,7,5:1
17Dissolution of cellose with ionic liquids 显示文摘Swatloski R P Spear S K Holbrey J D 2002Journal of the American Chemical Society2002,124,18:1
18Dissolutionof cellose with ionic liquids显示文摘Swatloski R P Spear S K Holbrey J D 2002Journal of the AmericanChemical Society2002,124,18:1
19Dissolution of cel- lulose with ionic liquids显示文摘Swatloski R P Spear S K Holbrey J D 2002Journal of the American Chemical Society2002,124,18:1
20Dissolution of cellulose with ionic liquids显示文摘Swatloski R P Spear S K Holbrey J D 2002J Am Chem Soc2002,124,:1
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