SpecimenPreparationforScanningElectronMicroscopy

Specimen Preparation for Scanning Electron MicroscopyWe recommend consultation with one of the lab directors before preparing specimens. The methods presented here provide an overview of preparation techniques for a variety of specimens.Conductive Specimens (such as metallic objects):Usually, these specimens do not have to be sputter coated. Simply mount the specimen on a SEM stub using conductive paint or putty......阅读全文

Method:-Preparation-of-Lymphocyte-Cell-Pellet-for-Storage

Method: Preparation of Lymphocyte Cell Pellet for StorageJune 10, 1990Rosalie VeilePurpose:Following propagation to 1 X 108 cells, lymphoblastoid cell

Preparation-of-fixed-embryos-for-immunocytochemistry-and-AP-staining

1. Transfer 50 ml of embryo cultures to centrifuge tubes. Spin at 1500 rpm for 5 minutes. Check that you can see a pellet of embryos at the bottom.Qui

关于扫描电子显微镜知识的详解

  显微仪器主要包括了光学显微镜和电子显微镜。光学显微镜的分辨率最高只能达到200 nm,有效放大倍率为1000~2000倍,无法研究如物质的分子、原子等小于200 nm的物质。故而,科学家们进而研究了电子显微镜。电子显微镜简称电镜( Electron Microspy, EM ),它是利用电子束对

Differential-Interference-Contrast

Differential Interference Contrast (Nomarski, DIC, Hoffman Modulation Contrast)PrincipleDifferential interference microscopy requires several optical

原子力显微镜的由来

  原子力显微镜(atomic force microscope, AFM)是一种具有原子分辨率的表面形貌、电磁性能分析的重要仪器。1981年,STM(scanning tunneling microscopy, 扫描隧道显微镜)由IBM-Zurich 的Binnig and Rohrer 发明。1

合肥研究院提出下层原子散射表面电子扫描隧道显微学证据

  一直以来,人们对下层原子与表面电子态之间的关系缺乏认识,因而导致了一系列的争议。近期,中国科学院强磁场科学中心陆轻铀教授课题组提出了一种“集体干涉”理论模型,通过引入层间作用因子,能够定量地揭示它们之间的关联。相关研究以《下层原子散射表面电子的扫描隧道显微学证据》(Scanning tunnel

激光扫描共焦显微镜术的技术方法介绍

中文名称激光扫描共焦显微镜术英文名称laser scanning confocal microscopy定  义用激光作为光源的共聚焦显微镜技术。应用学科生物化学与分子生物学(一级学科),方法与技术(二级学科)

LSM的应用方向

我们简称的Confocal,一般是指,激光扫描共聚焦荧光显微镜(laser scanning confocal microscopy,LSCM)。是一种利用激光、电子摄像和计算机图像处理技术结合光学显微镜获得生物样品三维数据的分析仪器。目前生物医学研究应用中使用最为广泛。

Preparation-of-Plasmid-DNA-by-Alkaline-Lysis-with-SDS:-Maxipreparation

实验概要Plasmid DNA is isolated from large-scale (500 ml) bacterial cultures by treatment with alkali and SDS.主要试剂Buffers and SolutionsAlkaline lysis solu

Preparation-of-cytospin-from-single-cell-suspension.

Cell number, speed and trivial details affect cytospin .Basic protocol:Prepare a cell suspension of not more than 0.5 x 106 cells / ml of protein-cont

PREPARATION-OF-2%-FORMALDEHYDE-STOCK-SOLUTION-(2-METHODS)

METHOD 1:Formaldehyde preservative – 2% formaldehyde solution in protein-free phosphate-buffered saline (PBS).Prepare as follows:Add 2 g paraformaldeh

High-Molecular-Weight-Yeast-Liquid-DNA-Preparation

Purpose:To isolate intact, high molecular weight DNA from yeast cells for subcloning and rare cutting restriction enzyme analysis. One can expect a yi

96Well-Sample-Preparation-for-Suspension-Cells

实验概要The procedure  presented below describes a facile method for studying signal  transduction events with suspension cells (Jurkat, Raji, THP-1, etc.

96Well-Sample-Preparation-for-Suspension-Cells

实验概要The procedure  presented below describes a facile method for studying signal  transduction events with suspension cells (Jurkat, Raji, THP-1, etc.

96Well-Sample-Preparation-for-Adherent-Cells

实验概要The procedure  presented below describes a facile method for studying signal  transduction events with adherent cells (HeLa, MCF-7, BALB/c 3T3, et

GOLGIVESICLE-PREPARATION-FROM-PEA-HYPOCOTYLS

PREPARE SOLUTIONS1. 0.25 M Sucrose Solution:Mix 40 g of sucrose (0.25M), 50 mL of 1M KH2PO4, pH 6.65 (0.1M), 2.5 mL of 1M MgCl2 (5 mM), and dH2O to 50

Preparation-of-Stroma,-Thylakoid-Membrane,-and-Lumen-Fractions-from-...

Preparation of Stroma, Thylakoid Membrane, and Lumen Fractions from Arabidopsis thaliana Chloroplasts for Proteomic AnalysisFor many studies regarding

Preparation-of-denaturing-6%polyacrylamide-gels-for-microsatellite-analysis

Preparation of denaturing 6% polyacrylamide gels for microsatellite analysis(also for SSAP, high-resolution IRAP/ISSR and other analyses)Saadiah Jamli

Preparation-of-Low-Density,-CollagenaseDigested-Splenocytes

1. Dilute 2 ml of 4000 U/ml Collagenase D as follows: 1 ml into 9 ml HBSS/Ca++/Mg++ (=400U/ml) and 1 ml into 39 ml HBSS/Ca++/Mg++ (=100U/ml). Put on i

96Well-Sample-Preparation-for-Adherent-Cells

实验概要The procedure  presented below describes a facile method for studying signal  transduction events with adherent cells (HeLa, MCF-7, BALB/c 3T3, et

Preparation-of-Plasmid-DNA-by-Alkaline-Lysis-with-SDS:-Minipreparation

实验概要Plasmid DNA is isolated from small-scale (1-2 ml) bacterial cultures by treatment with alkali and SDS.主要试剂Buffers and Solutions:    Alkaline lysis

96Well-Sample-Preparation-for-Suspension-Cells

实验概要The  procedure presented below describes a facile method for studying signal  transduction events with suspension cells (Jurkat, Raji, THP-1, etc.

TEM和SEM的工作原理差别

扫描电子显微镜 SEM(scanning electron microscope) 工作原理:1965年发明的较现代的细胞生物学研究工具,主要是利用二次电子信号成像来观察样品的表面形态,即用极狭窄的电子束去扫描样品,通过电子束与样品的相互作用产生各种效应,其中主要是样品的二次电子发射。二次电子能够产

TEM和SEM的工作原理差别

扫描电子显微镜 SEM(scanning electron microscope) 工作原理:1965年发明的较现代的细胞生物学研究工具,主要是利用二次电子信号成像来观察样品的表面形态,即用极狭窄的电子束去扫描样品,通过电子束与样品的相互作用产生各种效应,其中主要是样品的二次电子发射。二次电子能够产

SCI论文中怎样描述TEM结果?TEM结果描述样品尺寸分布情况

实例一:A particle count taken from many such images, obtained from different regions of the sample, confirmed the presence of essentially monodispersed A

激光扫描共聚焦荧光显微镜简介

  激光扫描共聚焦荧光显微镜(laser scanning confocal microscopy,LSCM)是一种利用计算机、激光和图像处理技术获得生物样品三维数据、目前最先进的分子细胞生物学的分析仪器。主要用于观察活细胞结构及特定分子、离子的生物学变化,定量分析,以及实时定量测定等。

原子力显微镜(Atomic-Force-Microscopy-,简称AFM)

原子力显微镜的工作原理就是将探针装在一弹性微悬臂的一端,微悬臂的另一端固定,当探针在样品表面扫描时,探针与样品表面原子间的排斥力会使得微悬臂轻微变形,这样,微悬臂的轻微变形就可以作为探针和样品间排斥力的直接量度。一束激光经微悬臂的背面反射到光电检测器,可以精确测量微悬臂的微小变形,这样就实现了通过检

扫描电子显微镜(Scanningelectron-microscopy,-SEM)

扫描电镜分析可以提供从数纳米到毫米范围内的形貌像,观察视野大,其分辩率一般为6纳米,对于场发射扫描电子显微镜,其空间分辩率可以达到0.5纳米量级。其提供的信息主要有材料的几何形貌,粉体的分散状态,纳米颗粒大小及分布以及特定形貌区域的元素组成和物相结构。扫描电镜对样品的要求比较低,无论是粉体样品还是大

Dark-Field-Viewing

Dark Field ViewingPrincipleTo view a specimen in dark field, an opaque disc is placed underneath the condenser lens, so that only light that is scatte

《自然》(20231207出版)一周论文导读

原文地址:http://news.sciencenet.cn/htmlnews/2023/12/513926.shtm编译 | 冯维维Nature, Volume 624 Issue 7990, 7 December 2023《自然》 第624卷,7990期,2023年12月7日   ?物理