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TiO 2 nanowires were synthesized successfully in a large quantity by thermal evaporation using titanium monoxide powder ......
学科分类LⅡ讧NOLoGY1 LIMNOL 0CEANOGR2 WATER RESOUR RES3 J GREAT LAKES RES MARlNEFRESHWATER B10LoGY l REV FlSH BIOL FISHE......
Oxygen Permeation and Stability of Ce_(0.8)Gd_(0.2)O_(2-δ)-PrBaCo_(2-x)FexO_(5+δ) Dual-phase Composi
Dual-phase membranes of 60 wt% Ce_(0.8)Gd_(0.2)O_(2-δ)-40 wt% Pr Ba Co2exFexO3 d(0 x 2) were prepared by a combined cit......
Bischler-Napieralski cyclization has been successfully employed to prepare planar S,N-heteroacenes(SNHs) with the analog......
A New Tetranuclear Silver Complex [Ag_4(MMPzA)_2(dmPz)_4(H_2DPC)_2](H_2O)_4 and Its Antibacterial Ac
A new tetranuclear silver(I) complex with the formula of [Ag_4(MMPzA)_2(dmPz)_4(H_2DPC)_2](H_2O)_4(1, MMPz A = mono(3,5-......
Gold nanoparticles,owing to their unique physicochemical and optical properties,well-established synthetic methods and e......
Chrome-diopside is a common mineral in ultramafic rocks and kimberlites, whereasureyite has up to now only been found i......
Artificial nucleic acid cleavage agents have attracted close attention because they play important roles in biochemistr......
目的观察酪酸梭菌活菌散与生大黄联合应用对急性重症胰腺炎胃肠功能恢复的治疗作用.方法将我科2007年1月至2011年12月期间收治的60......
Effect of carbide formers on microstructure and thermal conductivity of diamond-Cu composites for he
Diamond-copper composites were prepared by powder metallurgy,in which the diamond particles were pre-coated by magnetic ......
Stable and well-dispersed poly(N-vinyl-2-pyrrolidone) (PVP)-stabilized ruthenium colloidal clusters wereprepaxed via th......
The performances of multiphase polyblends are greatly affected by their microstructure, while the formation of this mic......
Influence of methane on hot filament CVD diamond films deposited on high-speed steel substrates with
Diamond films were deposited on high-speed steel substrates by hot filament chemical vapor deposition (HFCVD) method. To......
The NiB amorphous alloy catalysts supported on CNTs and alumina were prepared by impregnation and chemical reduction. Th......
Highly oriented ZnO nanotube array films on the conducting substrates have been synthesized by a simple hydrothermal met......
Silica-dispersed NiMo hydrodesulfurization catalysts were synthesized by the deposition-precipitation method. For compar......
Chemical mechanical polishing(CMP)was used to polish Lithium triborate(LiB3O5 or LBO)crystal.Taguchi method was applied ......
Chemical mechanical polishing (CMP) has been used to produce smooth and scratch-free surfaces for GaN. In the aqueous so......
Silicon isotope fractionation during the precipitation of quartz and the adsorption of H_4SiO_(4(aq)
Equilibrium Si isotope fractionation factors among orthosilicic acid(i.e.,H4 Si O4(aq)), quartz and the adsorption compl......
目的 观察单核细胞趋化蛋白-1 (MCP-1)在重症急性胰腺炎(severe acute pancreastitis,SAP)大鼠血清、胰腺及肠黏膜组织中的表达并......
This paper presents a piezoelectric-metal structure called a drum transducer. An equation for calculating the resonance ......
目的 观察胆碱酯酶抑制剂类神经性毒剂中毒后大鼠肠屏障功能和组织形态结构的变化以及宾赛克嚷的治疗作用.方法 40只雄性Wistar大......
目的在实验室自制的5 kW圆柱形单模微波等离子体化学气相沉积(MPCVD)装置上,系统研究各放电参数对等离子体的影响。方法采用模拟计......
在深部探测和科学钻探的施工中,钻头的合理选择和使用是提高深孔硬、脆、碎岩层钻探生产效率的最重要因素之一。针对金川科学钻探......
以15块经营密度试样地资料为基础，用转移概率矩阵方法建立马尾松人工林直径分布动脉转移模型。模型在间伐试验林的高、中、低密度林......
白涧铁矿区地层复杂多变，褶皱、断裂极为发育，使得钻探施工难度大。根据其地层条件，采用了多种钻探工艺技术，包括弹子式单管钻进、PDC......
在乙二铵介质中，铬(Ⅵ)与亚硝酸钠产生一灵敏极谱催化波，波峰敏锐，波形良好，峰电位为-1．66V(vs，SCE)，检出限为0．005μg／L，铬(Ⅵ)浓度在0．01-20......
目的观察甘草酸及复方中药肾十方对慢性马兜铃酸肾病的疗效。方法26例符合慢性马兜铃酸肾病的患者，给予甘草酸二铵150mg加中药复方......
针对复合钻井钻头转速高、井下动力钻具的输出扭矩受限制的特点,研制了一种尖圆混合布齿、低扭矩的新型金刚石钻头.现场试验证明,......
为完善黑钙土地区秸秆还田技术,合理调控土壤氮素循环提供理论和实践依据。以吉林省典型黑钙土为供试土壤,采用室内培养法研究秸秆......
原子堆积模式是学习晶体结构知识的基础,教学过程中存在结构图难以描画、堆积过程无法动态展现的缺点,学生很难掌握。在此以面心立......
采用实验生态学的方法,并通过方差分析,对6类不同岩性发育的土体上11年生马尾松生长和生物量研究,以揭示岩性-土壤与马尾松生产力......
应用大枝径切扦插开展对杜英扦插培育生根 的试验研究，解决杜英扦插难生根的问题。试验研究结果表明：经用KOH溶液预处理的穗条生根......
从发电机运行可靠性角度，对SIEMENS—KWU公司提供的百万千瓦级THDF系列发电机主要设计参数取值合理性进行了初步分析。内容包括：气隙......
为了提高视频的压缩效率,在传统菱形搜索算法基础上提出一种改进菱形搜索算法.该算法通过引入动态阈值,在起始搜索点预测、菱形搜......
基于CFD软件Fluent和气固二相流理论,以散装水泥车卸料管道为研究对象,建立二维模型,对补气速度、2管直径比和2管道交角可能对管内......
在制备纳米镍-钴镀层电镀金刚石工具的过程中,外加交变磁场,磁场方向与电场方向垂直。利用扫描电镜和X射线衍射观察结果表明：交变磁......
Effects of cardiopulmonary bypass on tight junction protein expressions in intestinal mucosa of rats
瞄准：在一个试验性的模型调查肠粘膜的紧密的连接蛋白质表情心肺绕过(CPB ) 在老鼠。方法：三十只 anesthetized 老鼠随机被划分成二......
HPLC Determination of Neurotoxin β-N-oxalyl-L-α, β- diaminopropionic acid and Its α -Isomer in Lathy
...
为了解近年来内蒙古阿拉善地区阿拉善白绒山羊绒纤维细度的变化情况,该试验采用国标方法,利用全自动纤维细度仪,分别于2010年和201......
为了掌握中国特有裸子植物巴山榧树的种群现状,预测种群数量动态趋势,以分布于重庆、四川、陕西、湖北、安徽、河南和甘肃等省市的......
在磁场的 Rydherg 氢原子的系列与 B 花键基础功能用线性变化方法被计算了[Acta Phys。罪恶。55 (2006 ) 3380 ] 。把我们关于高 R......
双电极接触放电是一项修整金属结合剂金刚石磨轮的新技术。它利用接触放电电蚀原理以达到去除磨轮的金属结合剂而修锐或整形磨轮。......
金刚石、CBN电镀刀具在实际中获得了一定的应用。目前，改进电镀制造工艺、提高刀具制造精度和制造效率仍然是电镀刀具制造中主要研......
以氢气和正硅酸乙酯为反应源,采用前驱体裂解的方法在硬质合金基体上制备非晶SiO2（a-Si O2）薄膜。X射线衍射（XRD）分析表明,非晶薄膜与......
分析了回归反光织物中玻璃微珠直径变化对单个微珠反光强度和回归反光织物反光性能及其他性能的影响。提出了织物覆盖率的概念。结......
目的研究金刚石圆锯片的固有频率,分析各阶固有频率和主振型,确定较理想的锯片参数,避免在外界冲击作用下产生的频率与固有频率相......
目的探讨乳腺肿块的高频彩超表现及与触诊径值之间的相关性在评判良恶性病变中的价值。方法回顾资料完整的79个乳腺肿块（良性46,恶......
针对孔深超过1 000m时,原有绳钻设备、机具、工艺、技术无法达到钻探施工的要求。特别是施工中因裂隙、溶洞发育,常会发生涌、漏水......
为了分析羟基自由基水溶液中金刚石抛光碳化硅过程中材料原子级别的去除机理,采用反应分子动力学对抛光过程进行了模拟.结果表明:......
