查询词典 CR

Hydroxysteroid dehydrogenase/carbonyl reductase ( 3α-HSD/CR,EC 1.1.1.50 ) from Comamonas testosteroni is an inducible enzyme which catalyzes the oxidation of androsterone with NAD+ to form androstanedione and NADH. 3α-HSD/CR was a member of the SDRs family, whose crystal structure had been solved by X-ray diffraction in 2000. The structure of 3α-HSD/CR is a homodimer which shows a typical pattern of Rossmann-fold structure consisting of βαβ units, and reaveals similarity with other members upon the SDRs family.

中文摘要 3α-Hydroxysteroid dehydrogenase/carbonyl reductase ( 3α-HSD/CR，EC 1.1.1.50 )是从Comamonas testosteroni菌体中分离而来的诱发性酵素，利用NAD+为辅因子，将受质androsterone氧化成androstanedione并伴随NADH的生成而完成催化反应。3α-HSD/CR是属於SDRs家族成员之一，其立体结构已经在2000年利用X-ray晶体绕射所解出。3α-HSD/CR在结构上为一同源双聚体，并和其它家族成员一样具有βαβ二级结构所叠合组成的Rossmann-fold特徵。

Resulte: In 12 infective lesions, including purulent infection (4 cases) and tuberculosis (8 cases), the correct dignosis was made in 4cases by CR and in 11 cases by CT. In 16 soft tissue tumors, including lipoma (7 cases), fibrosarcoma (4 cases), hemangioma (1 case), neurofibroma (1 case), malignant fibrous histocytoma (1case), aggressive fibromatosis (1 case) and liposarcoma (1 case), the correct diagnosis was made in 3cases by CR and in 14 cases by CT. In 11 bone lesions, including fibrous dysplasia (7 cases), chondroma (2 cases), myeloma and cosinophilic granuloma (1 case), the correct diagnosis was made in 8cases by CR and in 10 cases by CT.

结果：感染组12例中(包括化脓性感染4例，胸壁结核8例)，CR准确诊断4例，CT诊断11例；软组织肿瘤组16例中(包括脂肪瘤7例，纤维肉瘤4例，血管瘤、神经纤维瘤、恶性纤维组织细胞瘤、侵袭性纤维瘤病和脂肪肉瘤各l例)，CR准确诊断3例，CT诊断14例；骨肿瘤和肿瘤样病变组11例中(包括骨纤维异常增殖症7例，软骨瘤2例，多发性骨髓瘤和骨嗜酸性肉芽肿各1例)，CR准确诊断8例，CT诊断10例。

The surface formation energy calculation shows that for Cr/W(100) and Cr/W(110) system, one monolayer Cr is stable against the formation of interdiffusion structure.

表面形成能计算表明对于Cr/W(100)和Cr/W(110)体系，完整的Cr单层薄膜相对于扩散结构（即表面层和界面层的两个不等价原子中的一个发生互换）在能量上是有利的。

Limonite can not only reduce Cr to Cr, but also remove Cr completely from water.

使用褐铁矿不仅可以将Cr还原为Cr，还能将Cr彻底从水中去除。

At the heavy metal concentration of 3-4ppm, our study on adsorption capacity, adsorption selectivity of montmorillonite, illite and kaolinite to Cu〓、 Pb〓、 Zn〓、 Cd〓、 Cr〓 shows that the adsorption capacity is mainly determined by the capacity of exchangeable cations and the adsorption capacity of the three clay minerals decreases in this sequence: montmorillonite ＞＞ illite＞kaolinite. It is found that clay minerals have obvious adsorption selectivity to various heavy metals. Montmorillonite exhibits a stronger affinity to Cr〓 and Cu〓 while kaolinite and illite sorb Cr〓 and Pb〓 more effectively. At the same heavy metal concentration, adsorption amount of clay minerals to heavy metals increase with increasing pH value of the solution.

在痕量浓度下，研究了蒙脱石、伊利石、高岭石三种粘土矿物对Cu〓、Pb〓、Zn〓、Cd〓、Cr〓五种重金属离子的吸附容量、吸附选择性及其介质条件对吸附量的影响，结果表明，粘土矿物的阳离子交换容量越大，对重金属离子的吸附容量也越大，其大小顺序为蒙脱石＞＞伊利石＞高岭石；同时，不同粘土矿物对重金属离子具有明显的吸附选择性，蒙脱石对Cr〓和Cu〓有较好的选择性，伊利石和高岭石则对Cr〓和Pb〓有较好的选择性；随着吸附溶液pH值的增大，其吸附量有增加的趋势。

ResultsNo significant changes of NAA/Cr, Cho/Cr and NAA/Cho ratios were observed between the left and right precentral gyrus, nor between the male and female.

结果不同侧别和不同性别之间的NAA/Cr、Cho/Cr和NAA/Cho值均无显著性差异；NAA/Cr与年龄低度负相关，Cho/Cr与年龄低度正相关，NAA/Cho与年龄呈中度负相关。

In the interfacial layer near to SiC, elements Pd and Ni preferentially diffused to SiC and resulted in the reaction products of Pd-Si phase, Ni-Si phase and graphite. In the reaction zone further away from the SiC, mainly elements Cr and V in the brazing filler participated in the interface reaction, and formed Cr-C, Cr-Si, Cr5Si3C. In the central part of the joint, the matrix was composed of Pd-Si, Ni-Si and V-Si phases, on which some blocky carbides V2C, Cr23C6 distributed scatteringly.

MPa。微观分析表明，在靠近SiC的界面反应层中，主要是Pd和Ni优先与SiC反应生成相应的Pd-Si相，Ni-Si相和石墨；接头中在离SiC稍远的区域，主要是Cr和V与母材扩散进入钎缝且未与Pd和Ni反应的C和Si发生反应，生成Cr-C， Cr-Si， Cr5Si3C 等相；钎缝中心区的基体由Pd-Si，Ni-Si和V-Si相组成，其上弥散分布着块状碳化物V2C和Cr23C6。

Experimental dietaries were control, Cu 150mg/kg+Cr 600ug/kg, Cu 150mg/kg+Cr 600ug/kg+ LO 3.0%, Cu 150mg/kg+Cr 600ug/kg+CLA 0.3% and Cu 150mg/kg+Cr 600ug/kg+LO 3.0%+ CLA 0.3% respectivel

Cu+Cr十LO显著降低蛋黄TG和TC水平，Cu+Cr+CLA对蛋黄TG和TC水平有升高的效果。

Author considered that the metal Cr resulted from the reduction of Cr〓 in the passivating film, and metal Cr would provide center of nucleation and phase growth for following electrodeposition of amorphous chromium.

认为是金属电极上氧化膜中的Cr〓还原所致，形成的金属Cr为后继的非晶态Cr电沉积提供生长中心。

From theoretical analyses and calculations, it has been confirmed that the local strains around Cr〓 in SrTiO〓: Cr〓 are about twice the bulk ones. It is found that the change of Dq〓 with pressure makes main contribution to PS of ground-state g factor of SrTiO〓: Cr〓. It is the admixtures of basic wave functions that cause the strain-induced splittings of t〓E and t〓A〓 levels of SrTiO〓: Cr〓. It is found that there are non-vanishing matrix elements of operators C , C and C between wave functions with positive M〓 and those with negative M〓 and the shortcomings in previous literature have been overcome.

通过微观理论分析与计算，证实了SrTiO〓：Cr〓中Cr〓周围的局域应变大约为整体应变的两倍；阐明了基态g因子随压力的变化主要来源于Dq〓的变化；发现波函数的混合对单轴压力导致的SrTiO〓：Cr〓t〓E和t〓A〓态的分裂是至关重要的；C、C和C算符在Ms为正的波函数与M〓为负的波函数之间的矩阵元不为零，纠正了过去文献对此的错误处理。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。