目的:制备探针n N-n 18F-氟乙基-托法替尼，探讨其用于类风湿关节炎(RA)诊疗的可行性。n 方法:采用“两步法”对托法......

In recent years, a significant number of investigations have discovered up to 200000 unsubmitted sexual assault kits (SA......

在高中阶段,由于学习难度的提升,班级中通常情况下会出现一些成绩比较落后的学生,这些学生被称为"学困生",为了帮助"学困生"获得化......

The main taste components of triploid and diploid oyster (Crassostrea gigas) were compared. Free amino acids, inosine ......

<正> In 1980, we found a metallic mineral in a Cu-Ni deposit in Xinjiang. After X-ray powder study and microprobe analys......

【正】 SACHEM,Inc.,established in 1950,is a privately held specialty chemicalcompany headquartered in Austin,Texas,USA.W......

Zirconia-loaded sulfuric acid (SO24- /ZrO2) catalysts were prepared by impregnation method, molded by punch tablet machi......

【正】 China’s petroleum and chemical industry sawa rebound trend for 2009 although it experienceda tumble due to the g......

Bis{2-[(2,4-dichloro-phenylimino)-methyl]-4,6-diiodo-phenol}-copper(II) (1) has been synthesized and its structure deter......

With the support by the National Natural Science Foundation of China,the research team led by Prof.Yan Hong(燕红)at the ......

We research the adsorption geometries and electronic structures of pristine graphene(p-GR) and Li-doped graphene(Li-GR) ......

Objective To understand the distribution of chemical elements in soil,to investigate the differences between patients un......

Archeologists100,000 years fromnow will find none of today’s skyscra-pers.Moisture will have turned steelto rust and c......

The polystyrene/rectorite nanocomposites were prepared by free radical polymerization of styrene containing dispersed or......

Multi-walled carbon nanotubes (MWNTs) with 20 nm outer diameter were prepared by chemical vapor deposition of ethylene u......

Three distannoxane dimers [(PhCH 2) 2(Cl)SnOSn(X)(CH 2Ph) 2] 2 (X=Cl, OMe, OEt) were prepared by the hydrolytic rea......

Geochemistry is a science dealing with the earth,and the chemical reactions,chemi-cal composition and chemical evolutio......

Wang Zhengwei, chairman of the government of Ningxia Hui Autonomous region, summarizes its situation succinctly. “Ningx......

LOCATED in Inner Mon-golia Autonomous Re-gion, Ejin Horo Banneris home to the mauso-leum of Genghis Khan.the legendary f......

The dispersing process of polyacenic semiconductor(PAS) in polyethylene(PE) was simulated by using molecular dynamics(MD......

本文用络合平衡及快交换的方法定量描述了磷酸三乙酯(TEP)、四氢呋喃(THF)、二氧六环(DO)和乙腈(AN)水溶液中化学位移随浓度变化的......

This paper proposes a new infrared method to measure the start duration of GaAs substrate in chemi- cal etching. When et......

The nonrelativistic DV-X_α-SCC method was used to study the electronic structure and chemi-cal bonding of tetranuclear......

The antiwear properties of two wheel/rail lubricating oils were tested and compared on an Amsler machine. Under same tes......

Ethanolamine is an important organic chemi-cal raw material that is used in making surfactants,pharmaceuticals,pesticid......

China implements the licensing system to the import and export of precursors and chemi-cals used in production of narco......

As of July 9th,88 listed chemical companies has posted their results predicted in the first half of 2008.Of which,50 co......

Zekai(Group)Corp.recently announced that the construction of the first phase of 1.8 mil-lion t/a coal based methanol pr......

A recent patent litigation case was ruled in favor of BASF and against the chemi-cal manufacturer Shouguang Shuangxing ......

【正】 Will China keep a clean air and safety work after the Olympics ended? An explosion hap-pened on August 26th warne......

Rapid market demand growth Stringent requirements on the control of au-tomobile effluents have promoted a constant incr......

【正】 Cyclohexanone is an important chemical raw material.It is mainly used to produce chemi-cal intermediates such as ......

Bluestar New Chemical Materials Co.,Ltd.(SH:600299),under China National BlueStar(Group) Corporation(BlueStar),announce......

【正】 p-Xylene(PX) is an important organic chemi-cal raw material used mainly to produce PTA (purified terephthalic aci......

【正】 During October 27th-31 st,2008 the Leibo county governmentsinged three phosphorous chemi-cal contracts totally va......

Zhejiang Jiangshan Chemical Co.,Ltd.(Jiangshan Chemical,SZ:002061)announced on April 11th that the company has signed a......

The composition and existing species ot the reaction production ot Hg ana X (X= Cl, Br and I) under different condition......

As the Okinawa Trough is a back-arc basin in early spreading, modern submarine hydrothermal activity and minerallization......

In this paper, we introduce a novel method named chemiluminescence mediated sono dynamic diagnosis (SDD), which is desig......

The studies on ultra microstructure characteristics of quartz exsolution in eclogite and coesite in UHP eclogite of sev......

Even though aluminium has been used formore than a century, its adaptabilityin various sectors of our life has barelyto......

NEW rare earth projects in China will notbe approved in the next 10 to 15 years sothe government can rein in over—prod......

A silicon dioxide fiber-reinforced silicon nitride matrix (SiO2/Si3N4) composite used for radomes was prepared by chemi-......

Sodium titanate nanotubes have been prepared and modified chemically with CdSe quantum dots (QDs) using bifunctional mod......

1.Population growth.2.Shortage of food,particularly in underdeveloped countries.3.Diminishing reserves of fuels and met......

There are two new trends in the development of novel Pharmaceuticals. Biotechnology provides a novel approach to ration......

民以食为天。但很少有人静下来想一想,我们食用的食物是否含有致命致癌物质。对这些食物的过度摄入势必会对我们的健康产生极大危......

【正】 Acetic acid is an important organic chemi-cal raw material.It is mainly used to pro-duce vinyl acetate,acetic anh......

A modified diffusion flux model (DFM) was developed to analyze turbulent multi-dimensional gas-particle two-phase flows......

Three substituted α,β,β-trifluorostyrenes(TFS’s),i.e.,p-thiomethyltrifluorostyrene(4),p-cyclopropyltrifluorostyrene......