能够在手机屏幕上同时观看文字信息与TV的LCD样品

NEC公司制成了一件2.6in.的以玻璃作衬底的反射式低温多晶硅CMOSTFT LCD系统的模块样品;此件模块样品可以在横向划分开来的屏幕上,同时显示全彩色TV图像和文字信息,彩色TV图像在仅显示文字信息屏幕区域的上面。在此项样品开发成功之前,通常小型装置或者移动应用装置的LCD,一般都不能够完整地显示TV内容;只能够在减少了一定数量的像素元以后才能够显示。 随着宽带技术的进步,图像显示越来越重要;它已经成为下一代移动电话的一项重要品质标志。该显示器既提供     

Research on sound radiation from body in free field

I.IntroductionWhenastructurcvibratcs,itsvibratingsurfacewillmakesurroundingmediummovetogethcrwithit.Ifthernotionissofastthatthcmediumroundthestructureproduccaloca1contractionandcxpansionandthcypropagatefaraway,thesoundradiationisformed.Itispossiblctodcscribeanalytica11ytheradiationfic1dofsimplyandregularlyshapcdsourcessuchaspointsoundsourccs,spherica1soundsourccsandinflnite1engthllnearsoundsourccs,butitisa1mostimpossib1ctosolvetheradiationfiledbyanyanalyt-ica1methodforsourcesofvcrycomplicateds…     

非晶Nd-Fe薄膜电阻的温度效应与非晶稳定性

用闪光蒸镀法在77K制备了Nd_xFe_1-x(x=0.06-0.80)非晶薄膜,原位测定了其电阻随温度的变化。结果表明:在0.192和ρ(T)∝T。晶化不是在一个固定的温度,而是在一个温度区间发生。     

迅速导通的PNP稳压器

通信和压控振荡器电路常常需要　稳压良好的快速通断低噪声电源。带有通／断引脚的线性稳压器非常适用于这种场合，但其输出端会有一些噪声。大幅度提高输出电容可以适度降低噪声。其缺点是增加开支，增大开关通断时间，降低电路效率。ＭＩＣ５２０５是一种低下降ＰＮＰ稳压器。它具有一个噪声旁路引脚，可用来进一步降低噪声。从旁路引脚接到地线的１０ｎＦ电容器，可使输出噪声降低Ｖｏｕｔ／１．２４Ｖ（５Ｖ部件为１２ｄＢ），并形成一个低于１００Ｈｚ的噪声极点。导通时间会从８０ｕｓ增大到１５ｍｓ。再增加少量元器件，下列电路可保…     

A Study of Protein and Glycoprotein Syntheses in Pre-implantation Mouse Embryos Using Mini-2D-Electrophoresis, Video Densitometer Scanning and Computer-Image Analysis

In the present study, proteins and glycoproteins of mouse embryos at 2-cell,morula and blastocyst stages were analyzed.The techniques of ~(35)S-Met incorporation,ConA antiserum-precipitating ConA-binding proteins, mini-2D-electrophoresis, fluorography,video densitometer scanning and the computer-lmage system were used for analyses.Results of the investigations indicated that proteins and glycoproteins were synthesized by the embryos in a gradual increase manner from 2-cell to blastocyst. A relatively large amount of glycoproteins was synthesized during the morula and blastocyst stages.Two specific small glycoproteins respectively with molecular weights about 6500 and 9000 and PIs at 5.0 and 6.5 were apparently synthesized in the blastocyst but not in the 2-cell or the morula.     

加工对难熔金属高应变速率行为的影响——评述

对结构难熔金属，如钨、钽、铪及其合金的高应变速率行为进行了评述。钨、钽及其合金有显著的速率敏感性，而铪很少有或没有速率敏感性。单晶及（１００）取向织构钨具有极佳延性，而（１１０）取向织构钨则以典型的脆性方式断裂。钨重合金（ＷＨＡ）具有中等延性，而且在高应变速率下发生应变局部化。钽具有中等到上等的延性但其变形高度依赖于初始加工织构。铪的延性极佳且在很宽的应变速率范围易于局部化。难熔金属的宏观高应变速     

Design and performance analysis of beam steering birefringent mercurous chloride acousto-optic device

I.IntroductionThepcrformanccsofAcousto-optic(AO)dcviccareoftenlimitcdbythepropertiesofAOmcdiawhenitisusedinAOsigna1processingsystems.Thespectrumanalyzersandcorre1ationreceivers,forinstancc,areexpcctcdtoimprovcthereso1utionanddynamicrangcwhilereducingtheproccssorvolume.Rccent1y,ancwclassofmateria1s,themercurousha1ides,promiscstocontributeimportantsolutionstosuchnccdsandisrefincdtopractica1uti1izations.Themecurousha1ideweconsidcrinthispapcrismecurouschloride(Hg,C1,).Thesing1ecrystalofHg,Cl…     

Kinetic Studies of Electrochemical Oxidation of 1,3-Benzenedithiol

The electrochemical oxidation of 1, 3-benzenedithiol was investigated in a 0. 100 mol/L tetrabutylammonium perchlorate/acetonitrile electrolyte. The electrochemical techniques used were potential sweep, bulk electrolysis, rotating disc and the potential step method. The combination of the techniques yielded the number of electrons transferred per molecule, the reaction order, the transfer coefficient, the diffusion coefficient and concentration of dithiol anions, the standard heterogeneous rate constant as well as the formal potential and equilibrium constant of the preceeding dissociation reaction. This paper also illustrates the methods for studying the electrode kinetics of reactions which (a) involve a chemical reaction preceeding the electron-transfer process, (b) have insoluble polymer products, and (c) are totally irreversible.     

Differential Proteomic Analysis of Neonatal Cardiomyocytes in Response to β-Adrenergic Receptor Stimulation

Introduction Adrenoceptors(ARs),membersofthesuperfami lyofG proteincoupledreceptors,arethemostimpor tantreceptorsinvolvedincardiacregulation[1].ARsin cardiacmuscleincludebothαARsandβARssub types,whileinmostmammalianheart,βARsarethe predominantsubtypes.…