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为了用机器视觉检测技术精确检测微小零件的几何轮廓误差,设计了一套高分辨率非球面双远心物镜。根据检测要求确定系统的光学参数,......
Design, syntheses and biological activity of novel ALS inhibitors (Ⅸ)——CoMFA of sulfonylureas and tr
Quantitative structure-activity relationships for herbicidal activity against rape of sulfonylurea and triazolopyrimidin......
Hexagonal Al-doped zinc oxide (ZnO) powders with a nominal composition of Zn1-xAlxO (0≤x≤0.028) were synthesized by th......
Ball in cage structures of cobalt sulfide have been successfully prepared by a facile one-pot hydrothermal synthesis app......
Synthesis, Crystal Structure, Magnetic Property and DFT Study of a Novel 2D Polymer [Cu(pdc)(bpy)]·H
A new copper complex [Cu(pdc)(bpy)]·H2 O(1, H2 pdc = 3,5-pyridinedicarboxylic acid, bpy = 2,2-bipyridine) has been so......
Synthesis and Crystal Structure of a New Charge-assisted Hydrogen-bonded Host Framework [Co(en)_3]_2
Using the deep eutectic solvent formed of oxalic acid and choline chloride, a new charge-assisted hydrogen-bonded host f......
One new luminescent material of complex {[Cd(DPA)(H_2O)_2]·(H_2O)_2}_n(1) was synthesized by evaporation methods using ......
As a typical Palaeozoic island arc system, the eastern Tianshan area, Xinjiang, is different from eastern China but sim......
Chiral Separation of Ibuprofen and Terbutaline by Nonaqueous Capillary Electrophoresis with Conducta
In the nonaqueous N,N -dimethylformamide medium, the chiral drugs ibuprofen and terbutaline were successfully separated ......
目的分析医学生童年期虐待、特质应对及心身症状的关系，并探讨特质应对在童年期虐待与心身症状间的中介作用。方法选取某医学院262......
IN the last five years, since the Seventh Chinese Women’s National Congress, the women’s movement of China has develo......
在i Pad和Kindle的时代,图书馆能有多酷?其实远超你的想象,只要你知道该去哪儿。1.Central Library(中央美术馆):Seattle,Washingt......
Three monoclonal antibodies (MAbs) against metharnphetamine (BD1, BD2, BD10) and four MAbs against morphine (MP6A8, MP6D......
The crystal and molecular structure of the title compound was determined by means of Patterson and Fourier synthesis ba......
Crystal Structure and Molecular Orbital Calculation of（1R，2S）－N－Methylephedine Benzoate Hydrochlorid
ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅａｎｄＭｏｌｅｃｕｌａｒＯｒｂｉｔａｌＣａｌｃｕｌａｔｉｏｎｏｆ（１Ｒ，２Ｓ）－Ｎ－ＭｅｔｈｙｌｅｐｈｅｄｉｎｅＢｅｎｚｏａｔｅＨｙｄｒｏｃｈｌｏｒｉｄｅＣｈｅｎｇＸｉａｏ－Ｊｕｎ（ＥｎｖｉｒｏｎｍｅｎｔａｌＰｒｏｔｅ...
Crystal Structure and Molecular Orbital Calculations of (1R, 2S) -N-MethylephedineBenzoateHydrochlorideChengXiao-Ju......
Synthesis, crystal structure and luminescence properties of europium complexes with a new terpyridin
New 1:1, 1:2 and 1:3 europium (Ⅲ) complexes with 2,4,6-tris(3,5-dimethylpyrazol-1-yl)-1, 3,5-triazine have been prepar......
Crystallographic Characterization of the Novel Inorganic-organic Hybrid Coordinated Polymer: [(C_(22
A novel coordinated polymer [(C22H50N2)(Ag2I4)]n([C22H50N2]2+ = N,N?-1,2- ethylence-bis(N,N?-dimethyl octane ammonium) (......
New perovskite lithium ion conductors with nominal formula of Li4xLa2/3-xTiO3Fx were prepared by solid state reaction. X......
The title compound N-phenyl-2-deoxy-D-ribopyranosylamine featuring a single conformation and pyranose-ring has been synt......
Hot deformation behavior of an as-extruded duplex structured Mg–9Li–3Al–2.5Sr alloy is investigated via hot compressi......
AS one of the earliest women pilots in China, Quan Jiyu has earned honors and has had unique experiences. She has held ......
目的研究阐明山楂(Crataegus pinnatifida Bge.)叶的化学成分。方法运用硅胶柱色谱、Sephadex LH-20柱色谱、ODS柱色谱、制备HPLC......
目的 探讨心房颤动(简称房颤)患者KLOTHO基因的表达及其与纤维化的相关性.方法 60例行心脏手术患者按心脏节律分为窦性心律组、阵......
目的对来源于沙蚕(Perinereis aibuhitensis)的硫酸多糖进行结构表征和抗凝血活性研究。方法采用两步酶解法从沙蚕中提取多糖;利用......
,Antioxidative effect of schisanhenol on human low density lipoprotein and its quantum chemical calc
AIM: To investigate the effect of schisanhenol (Sal) on copper ion-induced oxidative modulation of human low density lip......
,cDNA cloning, sequence analysis,and recombinant expression of akitonin beta,a C-type lectin-like pr
AIM: To clone the cDNA of a new member of snake venom C-type lectin-like proteins, to study its structurefunction relati......
Complexity of Gold(Ⅲ ) Ion With Cefotaxime and Cefepime Drugs : Spectroscopic ,Antimicrobial and Ant
The availability of chemical and biological data presented in this paper is the basis for understanding not only the cur......
A maximum a posteriori( MAP) algorithm is proposed to improve the accuracy of super resolution( SR) reconstruction in tr......
上扬子区作为中国南方海相地层最稳定的地区,发育多套海相页岩.为研究控制该区页岩气甜点分布的主要因素,以上奥陶统五峰组—下志......
目的利用美国电气制造商协会(NEMA)国际电工委员会(IEC)系统模型研究病灶体积大小、放射性活度浓度、重建参数及不同感兴趣体积(VO......
A modified technique of bone grafting pedicled with femoral quadratus for alcohol-induced osteonecro
Background Quadratus femoris pedicled bone grafting has yielded satisfactory long-term clinical outcome for osteonecrosi......
球囊导管是用于介入医疗的新型医疗器械之一,其性能决定了整个介入医疗器械的操作性能。研究了原材料、中空纤维和球囊的凝聚态结......
在利用多极法优化设计光子晶体光纤结构的基础上,充分结合挤压和堆积两种方法的优点,提出了基于挤压-堆积的新型硫系光子晶体光纤......
对聚丙烯腈(PAN)预氧化纤维进行碳化处理,制备了不同碳元素含量的PAN基碳纤维,利用元素分析、红外光谱、X射线衍射、拉曼光谱对纤......
目的 对在综合性医院住院的患者应激源、中介机制、心理应激反应进行一个全面而整体的研究.建立一个住院患者心理应激反应及其影响......
用电弧炉熔炼法制备了PrxTb0.2Dy0.8-xFe1.85C0.05(x=0.1～0.4)合金。分别采用X射线衍射（XRD）、金相显微镜、振动样品磁强计（VSM）和应变......
基于密度泛函理论的第一性原理方法，对单个氧原子（O）化学置换掺杂在锯齿形（zigzag）（9，0） BC2 N NTs 进行了研究。结果显示 O 掺杂在 B 位（OB......
翻译学是一门年轻的学科,需要吸收其他相关学科的研究成果及理论来发展构建自己学科的研究方法.随着研究的深入发展,翻译研究开始......
Finite element and experimental analysis of pinion bracket-assembly of three gorges project ship lif
The pinion bracket-assembly (PBA) is a major part of three gorges project (TGP) ship lift drive system. The static stren......
A modified technique of bone grafting pedicled with femoral quadratus for alcohol-induced osteonecro
Background Quadratus femoris pedicled bone grafting has yielded satisfactory long-term clinical outcome for osteonecrosi......
拉臂式垃圾车是一种可自动装卸垃圾厢和自动卸载垃圾的专用环卫车,为改善车辆的性能,优化拉臂装置结构,建立了各工况下拉臂结构所......
Semiempirical quantum chemical method AM1 was employed to calculate the highest occupied molecular orbital (HOMO) energy......
采用欧拉两相流模型和标准的k-ε湍流模型,对一种喷射型分配器进行了数值模拟,在此基础上探讨了气相入口结构、液相入口数量、出口......
对孔府旧藏明代赤罗朝服研究发现内缯耳结构,显示是对“尽复汉官之威仪”的具体表现,其特殊的结构,是明承元制过程中,在保留蒙俗官......
投影仪向绘制有同心圆阵列的标定板投射彩色同心圆,利用同心圆投影满足的几何约束确定圆心图像坐标,计算标定平面、投影平面和相机......
文章针对钢带热轧机机前导尺装置轧制较薄带材时会挤压带材,造成带材损伤,导板磨损后不能互换,产生资源浪费,导板拆卸不便的问题,......
2020年5月14日,在中共中央政治局常委会会议上,习近平总书记首次提出了"要深化供给侧结构性改革,充分发挥我国超大规模市场优势和......
植物信号肽的研究主要集中在小分子肽。小分子肽作为胞间通讯的关键成分,主要参与信号干扰、反应途径、显示抗菌活性,并以配体的形......
