砷

The structure of ArsA ATPase with its ligand, arsenite, either on membranes or in solution, was revealed. The current trimeric ring-like structure of this protein doubts the previous dimeric model and gives deeper insight on this protein's physiological roles.

对亚砷酸根复合体ArsA蛋白质分子结构的揭示显示了该蛋白在亚砷酸根存在情况下，在膜上和水溶液中都是环形三聚体，对前人的二聚体模型假说提出了置疑，并为解释它的生理功能提供了重要的结构信息。

Objectives The purpose of this study was to evaluate the effect and mechanism of As〓O〓-gelatin-coating stents on rabbits'aortas and smooth muscle cells.

目的 研究氧化砷-明胶涂层的超弹性NiTi支架对兔主动脉组织及平滑肌细胞的作用，旨在探讨氧化砷预防支架内再狭窄的机制。

A compartmented soil-glass bead culture system was used to investigate characteristics of arsenic accumulation in iron plaque and in mature rice plants irrigated using water with arsenic in greenhouse.

结果表明，水稻的秸秆生物量及其籽粒产量并没有受到不同来源砷的显著影响；灌溉含砷水处理的两品系水稻根表铁氧化物沉积的数量（YY-1：196 g.kg^-1，94D-64：75.8 g.kg^-1）高于对照（YY-1：175g.kg^-1，94D-64：60.1 g.kg^-1），但差异不显著。

It is essential to know how arsenic is taken up by and how it metabolized in plants and microbe.

了解微生物和植物对无机砷的代谢机制，对认识和控制土壤中砷的风险至关重要。

Under low arsenic treatment (10 mg·kg-1), more arsenic was translocated from roots to stalks and leaves, whereas no changes were found for these in other arsenic treatments.

两个品种水稻各部位砷的转运系数在低砷处理时（10 mg·kg-1）出现显著的升高，而在其他处理条件下保持不变。

This anion pump is composed of two subunits, the catalytic 63KDa ArsA, a hydrophilic protein, when purified, exhibits oxyanion-stimulated ATPase activity, the hydrophobic 45. 5KDa ArsB protein, located in the inner membrane of E. coli, is the putative anion translocating channel and also serves as the anchor for ArsA to attach on the membrane.

ArsATP酶由水溶性的63KDa的ArsA蛋白和膜整合的46KDa的ArsB蛋白组成，ArsA蛋白是催化亚基，具有亚砷酸盐和亚锑酸盐激活的ATP酶活性，ArsB蛋白则构成转运亚砷酸盐和亚锑酸盐的阴离子通道，同时作为ArsA蛋白在膜上的结合位点。

People have paid attention to the pollution of soil and water quality caused by using organic arsenic chemistry reagent to prevent and cure apple-tree canker in our apple area, so it has an important purpose to seek a harm-free way for sustaining development of apple. The tests studied the effect of prevention and cure on apple-tree canker with EM mud, EM liquid, 40%'Fumeishen powder' and contrast. The results showed that the EM mud was superior to the EM liquid, 40% 'Fumeishen powder' and contrast. The prevention and cure effects of EM in 2006 and 2007 were 92.7% and 93.5%, while the recurrence rates of canker scars 1.8% and 2.8% respectively. And the healing effect of scar is 50.4%. So, it was considered as a new way to prevent and cure apple-tree canker with EM mud.

中国各苹果主产区果农长期使用有机砷等化学制剂防治腐烂病，对土壤、水质等环境造成的污染已引起人们的关注，寻求无公害的方法防治腐烂病，对苹果业可持续发展具有重要意义；本试验设EM活性菌泥涂抹、EM活性菌液涂抹、40%福美砷可湿性粉剂50倍液刮涂和对照（只刮除腐烂病疤，不涂药）4个处理，三次重复，进行了苹果树腐烂病的防治研究；结果表明，EM活性菌泥在防治效果、病疤复发率和促进病疤愈合效果方面均优于其它处理，其当年和第二年4月的防治效果分别为92.7%、93.5%，病疤复发率分别为1.8%、2.8%，促进病疤愈合效果也最好（50.4%）；因此，作者提出，将EM活性菌融入粘泥载体中制成菌泥，涂抹在腐烂病疤上，以菌治菌，是防治苹果树腐烂病的新途径。

A new technology on the removal of arsenic from yellow phosphorus was studied based on the situation of yellow phosphorus purification in Yunnan,and the principle and process was briefly introduced.

利用高压静电场对工业黄磷进行处理，结果显示：在电场的作用下能分离除去砷，经三级处理脱砷率可达90%以上，黄磷回收率在99.9%以上。

A new technology on the removal of arsenic from yellow phosphorus was studied based on the situation of yellow phosphorus purification in Yunnan,and the principle and process was briefly introduced.

利用高压静电场对工业黄磷进行处理，结果显示：在电场的作用下能分离除去砷，经三级处理脱砷率可达90%以上，黄磷回收率在99。

A review is given on speciation analysis including hyphenated techniques,such as high-performance liquid chromatography,gas chromatography,capillary electrophoresis and spectral analysis,and so on.

而在一般的测试方法中都是测试样品中各价砷的总含量，不能给出有关毒理性的确切信息，这样就不利于研究砷对环境和人类生活的危害。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。