Anew sensitive and selective method based on dispersive liquid-liquid microextraction (DLLME) coupled with spectrophotom......

【Abstract】This paper explores the effect of interactive teaching on students’cooperative ability，competitive ability，po......

<正> The determination of the power spectrum of the output of a nonlinear device in terms of its input is an old difficu......

<正> In the tests of metallurgical fatique and acceleration of electronic devices, in order to design and estimate the r......

With the support by the National Natural Science Foundation of China,the research team directed by Prof.Zhang LingQiang(......

This paper presents an analysis of a paper entitled "Principle of limitation of physical quantities and cyclic universe"......

A close study of Heisenberg uncertainty principles reveals many significant facts,and all four major physical quantities......

Combustible gases in coal mines are composed of methane,hydrogen,some multi-carbon alkane gases and other gases.Based on......

The graphene nanopowder for electro-catalytic oxidation of dopamine and uric acid in the presence of ascorbic acid has b......

为了研究稀土元素在小麦中的分布,建立了一种压力密闭消解电感耦合等离子体质谱分析Y、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、......

GROWING numbers of urban dwellers, young and old, are taking every chance to escape from the city to enjoy a calm, rural......

Based on oil development costs, the application research in the technical and economic limits calculation of oil develop......

A new and simple method was developed to determine anions in oxalate of analytical reagent grade.After UV photolysis wit......

A novel method for the determination of two quinolone drugs norfloxacin(NOR)and levofloxacin(LVX)was described by capill......

[Objective] To detect the methoxybenzyl alcohol content in brain tissue and cerebrospinal fluid of rats by HPLC.[Methods......

For the diffusion-controlled adsorption,the expression of dynamic surface adsorption(t)was obtained by solving the diffu......

到底什么是不可能?到底什么是极限?如果再搭配上时间轴呢?关于技术和商业的关系,100个人可能就会有100种答案,但共识却惊人地雷同:......

罗琳转为成人创作小说《哈利·波特》系列完结后,曾经有很多类似“罗琳还能写吗”或“罗琳还能写什么”的质疑,这一次,罗琳算是给......

Several basic points:(1) Ports are an indispensable link in the development of modern logistics & play an important rol......

The crystal structure of [Cu(Im)_ 4 ](teph) (Im=imidazole,teph=terephthalate) has been determined by X-ray crystallogra......

[Objective] To investigate the effect of different methods on the extraction of rutin and quercetin in Rosa Laevigata Mi......

In this paper, optical fiber chaotic secure communication is proposed bycoupling chaotic laser synchronous system with ......

The definite nature of the faunal evidence afforded by the Nihowan beds is of importance in fixing the limits of the ph......

International business negotiations take place across national boundaries. This means the successful operation of negoti......

A clear conclusion has been made in this paper that different negatives and the change of the positions of negatives ma......

The difference △δ between the proton shift of water of hydrauon of metar ions δ(H_2O(M~4))and that of pure liquid wa......

The 0.532-μm laser conditioning of HfO_2/SiO_2 third harmonic separator fabricated by electron-beam evaporation (EBE) w......

The applications of white light-emitting diodes(LEDs) have become more and more wide recently,while the low light-extrac......

An approach to the simultaneous measurement of refractive-index(RI) and temperature changes using optical ring resonator......

Explosive characteristics of polybasic explosive mixture gas are systematically researched. Over 28000 experimental data......

We study the Dirac oscillator problem in the presence of the Aharonov-Bohm effect with the harmonic potential in commuta......

An organic light-emitting diode(OLED) device with high efficiency and brightness is fabricated by inserting CuO_x/Cu dua......

<正>The rapid development of CMOS technology is driven by the device scaling down. Classical MOS devices have encountere......

High static power limits the application of conventional current-mode logic(CML).This paper presents a power-efficient s......

This Letter introduces a trigger-controlled Geiger-mode avalanche photodiode(GM-APD). A hierarchical lookback-upon tree ......

A new complex method is presented considering not only the improvement upon the “bad ”design point, but also the diver......

Water oxidation is a 4-electron uphill energy process that largely limits the overall water splitting reaction thermodyn......

We consider the response of a test subject upon a skin area being heated with an electromagnetic wave or a contact surfa......

In the matter of courage we all have our limits.There never was a hero who did not have his bounds.I suppose it may be s......

With the increase of inlet temperature of gas turbines, the benefits by using the conventional methods are likely to app......

Atterberg limits and consistency indices are used for classifications of cohesive(fine-grained) soils in relation with c......

一家大公司的员工吃完午餐回来,发现前门上挂了一个告示,上面写道:“一直阻碍你们在公司发展的那个人昨日离世,诚邀各位参加在体育......

我们在很多地方都可以看到“禁止入内”的标示，那么这个在英语中该怎么说呢？　　在美国口语中，“禁止入内”可以用“off limits”来表......

This study provides a framework of target costing to extend its original scope when the underlying distribution is non-n......

The Shimadzu GCMS-TQ8040 is the first triple quadrupole with Smart Productivity for high efficiency sample throughput,Sm......

In order to improve the efficiency of gas drainage before and during longwall extraction,a waterjet rotary cutting syste......

After development for decades,abroad remanufacturing has formed a complete industrial system.At present,the research emp......

·AIM: To compare IOPen and ICare rebound tonometry to Goldmann applanation tonometry(GAT) according to International St......

We used tables and graphs by using graphing-calculator to guess values of limits,however,we found methods we used don’t......

1. Limits at infinityLet’s begin by investigating the behavior of the function f(x) = 1/x as x becomes large. You can u......