DarkFieldViewing
Dark Field ViewingPrincipleTo view a specimen in dark field, an opaque disc is placed underneath the condenser lens, so that only light that is scattered by objects on the slide can reach the eye (figure 2). Instead of coming up through the specimen, the light is reflected by particles on the slide. Everything is visible regardless of color, usually bright white against a dark background. Pigmented objects are often ......阅读全文
细胞化学基础m7甲基鸟嘌呤核苷
熔点：370°C沸点：292.98°C(rough estimate)密度：1.3629(rough estimate)折射率：1.8500(estimate)储存条件：Keep in dark place,Inert atmosphere,Room temperature酸度系数(pKa)：9.7
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编译|李言Nature, 29 August 2024, Volume 632 Issue 8027《自然》2024年8月29日，第632卷，8027期地球科学Earth ScienceEarth’s ambipolar electrostatic field and its role in ion
使用多电极阵列系统（Med64）于视网膜退化模型中检测...
使用多电极阵列系统（Med-64）于视网膜退化模型中检测局部视网膜失效的研究光刺激通过光感受器中的光转导信号来抑制视网膜暗电流。视网膜电图（Electroretinography (ERG)）虽可检测暗电流的堵塞 （视网膜电图a-波）。然而，标准视网膜电图代表了视网膜神经的综合平均活动信号，
Immunocytochemistry...
实验概要The green fluorescent protein (GFP) from the jellyfish Aequorea victoria is a versatile marker for monitoring physiological processes, visualizi
RNA－gel－electrophoresis
MaterialsDEPC H2ODEPC 0.1% (v/v)q.s. de-ioinized H2O37ºC x1 hr, or r.t. overnightAutoclave.(NaOAc, EDTA and ethidium bromide solutions should also be
基于<111>，<100>和<110>取向GaAs的IMPATT二极管：探索毫米...3
The RF power output can be calculated from the following expression:PRF = (½)(VRF)2|Gp|Aj, (14)where V RF is the amplitude of fundamental component of
米诺环素的物化性质
外观与性状：亮黄色-橙色非晶形的固体密度：1.553 g/cm3沸点：659.401ºC at 760 mmHg闪点：352.593ºC折射率：1.717稳定性：Stable in air when protected from light and moisture; strong light an
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1、基本信息 中文名称：维库溴铵 中文别名：溴化凡寇罗宁； 英文名称：vecuronium bromide 英文别名：Vecuronium bromide； Vecuronium Bromide； Vecuronium Bromide Hydrate； CAS号：50700-72-6
米诺环素的物化性质
外观与性状：亮黄色-橙色非晶形的固体 密度：1.553 g/cm3 沸点：659.401ºC at 760 mmHg 闪点：352.593ºC 折射率：1.717 稳定性：Stable in air when protected from light and moisture； str
关于米诺环素的物化性质
外观与性状：亮黄色-橙色非晶形的固体 密度：1.553 g/cm3 沸点：659.401ºC at 760 mmHg 闪点：352.593ºC 折射率：1.717 稳定性：Stable in air when protected from light and moisture； str
基于<111>，<100>和<110>取向GaAs的IMPATT二极管：探索毫米...2
The appropriate restrictions in (1) have been imposed via the time varying boundary conditions at the depletion layer edges. The boundary conditio
TUNEL－PROCEDURE－IN－BOVINE－EMBRYOS
Materials8% (w/v) paraformaldehyde stock solution: Dissolve 8 g of powdered paraformaldehyde in 100 ml water. Heat and stir (55-60 C – do not go high
Tunel－Procedure－in－Bovine－Embryos－牛胚胎TUNEL检测凋亡
Materials8% (w/v) paraformaldehyde stock solution: Dissolve 8 g of powdered paraformaldehyde in 100 ml water. Heat and stir (55-60 C – do not go highe
TUNEL－PROCEDURE－IN－BOVINE－EMBRYOS
Materials8% (w/v) paraformaldehyde stock solution: Dissolve 8 g of powdered paraformaldehyde in 100 ml water. Heat and stir (55-60 C – do not go high
5G/NR－－OTA－（四）
There is another reason why defining D gets difficult. It would get more difficult for UE case. In order to correctly define D, you need to hav
Western－Blot－with－Platelet－Protein
OUTLINEWestern blot is a wide used technique to identify a target protein/s for the certain antibody.PROTOCOLPrepare platelets.Lyse washed platelets (
In－Vivo－Imaging－of－Far1
In Vivo Imaging of Far-red Fluorescent Proteins after DNA Electrotransfer to Muscle TissueDNA electrotransfer to muscle tissue yields long-term, high
简述叶绿体基粒的作用
叶绿体基粒的作用：光合作用的是能量及物质的转化过程。首先光能转化成电能，经电子传递产生ATP和NADPH形式的不稳定化学能，最终转化成稳定的化学能储存在糖类化合物中。分为光反应（light reaction）和暗反应（dark reaction），前者需要光，涉及水的光解和光合磷酸化，后者不需要
Protein－Electrophoresis
DefinitionAmino acids, nucleotides, polypeptides, and other compounds in a colloidal state can be separated by the application of external voltages wh
RNA－gel－electrophoresis
实验概要RNA gel electrophoresis主要试剂DEPC H2ODEPC 0.1% (v/v)q.s. de-ioinized H2O37ºC x1 hr, or r.t. overnightAutoclave.(NaOAc, EDTA and ethidium bromide sol
Fibroblast－Cell－Systems2
Handling Precautions Normal human cells are fragile, and require special handling:Upon receipt, immediately store cryopreserved cells in liquid nitrog
光刻机投影式曝光分类
扫描投影曝光（Scanning Project Printing）。70年代末～80年代初，〉1μm工艺；掩膜板1：1，全尺寸； 步进重复投影曝光（Stepping-repeating Project Printing或称作Stepper）。80年代末～90年代，0.35μm（I line）～
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EI: Electron Impact 电子轰击CI: Chemical Ionization 化学电离FAB: Fast Atom Bombardment 快原子轰击LSIMS: Liquid Second Ion Mass Spectrometry 液体二次离子电离ESI: Electr
扫描电镜透射模式（STEM）的成像原理及应用
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扫描电镜透射模式（STEM）的成像原理及应用
扫描电子显微镜已成为表征物质微观结构不可或缺的仪器。在扫描电镜中，电子束与试样的物质发生相互作用，可产生二次电子、特征X射线、背散射电子等多种的信号，通过采集二次电子、背散射电子得到有关物质表面微观形貌的信息，背散射电子衍射花样得到晶体结构信息，特征X-射线得到物质化学成分的信息，这些得到的都是
The－Impact－of－Harmo...－（二）
In addition, proficiency panel projects have demonstrated that even after an experiment was done and spots were counted, considerable variation can
可靠的毫米波正交干涉仪（70GHz）（二）
Many interferometers are required to operate in high ambient magnetic fields (B-fields), e.g. around magnetic confinement plasma devices. Typicall
组织学一般技术
The manuals for this section have been compiled by Susan L. Wall, HT(ASCP). These manuals are in Adobe Acrobat PDF format and require the Acrobat Read
EMC－Antenna－Parameters－and－Their－Relationships（三）
wherePd = radiated power density at distance r from the antenna, W/m2Pt = power input to the antenna, WGt = numerical gain of the antennar