The recovery of heavy oil by water flooding is 10% lower than that of conventional crude oil,so enhanced oil recovery (E......

Carbon dioxide transformation to fuels or chemicals provides an attractive approach for its utilization as feedstock and......

Nitrogen doped carbons are an important family of materials with ideal activity for oxygen reduction reaction(ORR). It i......

As one of the most important ways to reduce the greenhouse gas emission,carbon dioxide(CO_2)enhanced gas recovery(CO_2-E......

When aprotic Li-O_2 batteries recharge, the solid Li_2O_2 in the positive electrode is oxidized, which often exhibits a ......

Thioester method for the synthesis of cyclopeptides is improvedby using Pac (Pac=phenacyl, CH_2COC_6H_5) ester as a pro......

Using the hydrogeochemical modeling method, the groundwater chemical environmental problems of the Hebei Plain which inv......

Ultrafast electromagnetic waves radiated from semiconductor material under high electric fields and photoexcited by femt......

Synthetic studies towards(he C(3)-C(13)and C(14)-C(24)segments(3,4)of the potent antiviral and antitumor compound macro......

Diphenylchlorin (DPC) and diphenylbacteriochlorin (DPBC) were synthesized for the first time from reduction of 5,10-diph......

Microporous poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)membranes following supercritical CO_2 induced pha......

Based on the extensive-dilatancy anisotropy theory, the method of synthetic seismogram is used to estimate the anisotrop......

Two kinds of simulated concrete pore solutions(SPSs) were treated with different amounts of synthetic calcium silicate h......

Patient,male,47 years old,Norwegian.Date offirst visit:October 24,2007.Main complaints:sleep apnea with daytime dizzines......

The changes of free solution amount,fluidity and the time-depended fluidity loss of cement paste were examined by varyin......

Magnetic nanoparticles of nickel ferrite (NiFe2O4 ) have been successfully synthesized by microwave-assisted combustion ......

Fe-Si droplets on the surface of blast furnace (BF) coke from 25 to 50 cm at the tuyere level are mostly composed of Fe3......

Objective:To study the mechanism of insulin resistance in the cholesterol gallstone formation from insulin signal transd......

In this paper, a magnetooptic chip was prepared on Si wafer by combi-natorial Ga+ implantation into ion sputtered Co7Ag9......

The electrochemistry of pyridoxine (vitamin B6, VB6) was studied by cyclic voltammetry at a glassy carbon electrode. The......

The main problems in seismic attribute technology are the redundancy of data and the uncertainty of attributes,and these......

Fusain from Tongting (Huaibei, Anhui Province) bituminous (FTTB) coal was fractionally extracted using Soxhlet extractor......

Coal bed methane is unconventional raw natural gas stored in coal seam with considerable reserves in China.In recent yea......

Synergistic effects of pulsed DC dielectric barrier discharge(DBD)plasma and In-dium modified HZSM-5(In/HZSM-5)catalyst......

请下载后查看，本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view......

The pumping test in an unconfined aquifer with and without a low-permeability soil was studied experimentally to reveal ......

The bulk metallic glassy(BMG) rods of [(Fe0.5Co0.5)0.72B0.192Si0.048Nb0.04]100-xYx(x=0-6) and [(FexCo1-x)0.72B0.192Si0.0......

Thermal annealing in Te vapor atmosphere was adopted to improve the properties of indium-doped Cd_(1-x)Mn_xTe(x=0.2,CdMn......

Negative ion-beam-induced luminescence(IBIL) measurements of a pure LiF crystal using 20 keV H~-are performed to monitor......

Static “self-optimising” control is an important concept, which provides a link between static optimisation and contro......

Equations are obtained for the surface tilt angle and the twist angle of the director in a twisted nematic liquid crysta......

...

Early cultivator Zhongzao 1(indica)and late rice cultivar Xiushui 2(japonica)were used for field experiments.Seedlings ......

During the course of calculating the rice evapotranspiration using weather factors,we often find that some independent v......

This paper concerns the problem of output feedback tracking (OFT) control with bounded torque inputs of robot manipulato......

As the dump was a typically heterogeneous body, the seepage was different with varied spreading solution modes. The phen......

The development of a simple, efficient and sensitive sensor for dissolved oxygen is proposed using a novel type of porou......

针对航天器姿态控制输入饱和问题的解决方法进行了梳理和归纳,将技术途径主要分为三类,对每一类中具体方法的设计思想、数学形式及......

在油田开发过程中,油、气、水和泥浆在地层或管道中流动,当达到一定条件时,油垢、水垢或泥垢便会产生。在实际生产过程中,油垢和泥......

通过分子量与氢含量关系图中与渣油无关的单值区域能描述渣油和它们的热转化产物溶剂分离的假组分。这种溶剂—渣油相图能示踪分子......

设G为有限群。本文考虑G的所有极大超可解子群的交,利用这个新子群及其性质,得出有限群G为超可解的若干新判据,推广了有关文献的一......

本文讨论了锰纤维的饱和吸附量和样品流速对吸附效率的影响,比较了罗源湾表层海水~(226)Ra的测定结果。聚酰胺锰纤维现场富集海水......

根据液体介电常数ε随温度的变化规律，发现lnε与温度（1－Tr）1／2之间存在线性关系，对饱和液体介电常数的拟合结果表明，计算值与实验值的一......

利用瞬态双热线法测量了243-403K温度范围内饱和液相甲基叔丁基醚的导热系数，并将实验数据拟合为温度的关联式。实验数据与导热系数......

土壤、地下水中的在机污染物主要以自由态、挥发态、溶解态和殛留态等四种形态存在，其中残留态的部分是最难以去除的，残留量的多少是......

研究了绳系卫星系统因系绳弹性和俯仰运动相耦合而引起的非线性内共振问题。首先应用Kane方程建立了面内椭圆轨道两体弹性绳系卫星......

隔热管清洗一直是一个难题,为探索理想的清洗方法,进行了试验研究和理论计算,提出隔热管清洗的新技术。该技术使用高温蒸汽作清洗......

讨论了具有输入饱和的时滞系统的时滞相关稳定与镇定问题。利用自由权矩阵方法，获得了闭环系统基于线性矩阵不等式（LMI）的时滞相关稳......

利用小波分析方法取代传统的傅立叶方法对微弱的磁光记录薄膜信号进行分解、滤波和局部信号处理，大大提高了测量的灵敏度，更好地分析......

采用传统氧化物法制备了Ni0.49-xZn0.398＋xCu0.112Fe2O4（x=0，0.014，0.026，0.038，0.05）铁氧体材料，研究了主配方及烧结温度对材料电磁性能和......