DetectionandMeasurementofRadioactivity
Radioactive DecayIsotopes of a given element have nuclei with the same number of protons but different numbers of neutrons. Some isotopes are stable, however radioisotopes are unstable and disintegrate, with the emission of three main types of radiation.Alpha emitters release a particle composed of 2 neutrons and 2 protons. The atomic number is therefore reduced by 2, and the atomic mass by 4. Alpha particles are so ......阅读全文
Detection－and－Measurement－of－Radioactivity
Radioactive DecayIsotopes of a given element have nuclei with the same number of protons but different numbers of neutrons. Some isotopes are stable,
Detection－and－Measurement－of－Radioactivity
Liquid scintillation countingThe amount of kinetic energy in a beta particle differs from one decay to the next. However, each radioisotope has a typi
Coenzyme－A－Detection
实验概要The experiment provided an easy, convenient assay to measure the CoA level in a variety of biological samples. In the assay, free CoA is specif
Sphingomyelin－Mass－Measurement
Protocol:Bligh & Dyer extraction1) Pellet approximately 1 X 107 cells.2) Resuspend pellet in 3 ml CHCl3: CH3OH (1:2) and vortex hard.3) Add 0.8 ml H2O
Measurement－with－the－Light－Microscope
Measurement with the Light MicroscopeYour microscope may be equipped with a scale (called a reticule) that is built into one eyepiece. The reticule ca
Detection－of－Glycoproteins－on－Blot
Detection of Glycoproteins on BlotSource: Contributed by Sharad Purohit, Paller's LabReagentsSodium acetate Buffer (200mM, pH 5.5): Prepare a 200
Detection－of－Mycoplasma－by－Culture
AimDetection of mycoplasma by culture is the reference method of detection and has a theoretical level of detection of 1 colony-forming unit (cfu). Ho
Detection－by－TUNEL－labeling
In Situ Cell Death (Apoptosis) Detection by TUNEL labelingby Boehringer Mannheim (Catalog No. 1684809), modified by Josiah N. Wilcox,José C. Rodriguez
FACS－Procedures－for－Apoptosis－Detection
Materials:Hoechst 33258 (Sigma B-2883).stock: 10 mg/ml in dH20 (40)working dilution: 500µg/ml (50µl stock + 950µl PBS).7-Amino-actinomycin (Sigma A-94
Measurement－of－Green－Fluorescent－Protein－Expression
ReagentsCells to be studied expressing green fluorescent protein (GFP). Note that the same cell type without GFP is needed as control.Hoechst 33342 s
An－Integrative－Procedure－for－Apoptosis－Identification－and－Measurement
IntroductionApoptosis is a normal physiological phenomenon put forward by Kerr [1]. It plays an important role in embryonic development, maintenance o
Protein－detection－onto－PVDF－membranes
2-D PAGE and electroblotting onto PVDF membranes have become widely used techniques for the characterization of proteins. Recent improvements have all
Bespoke－Metal－Detection－Conveyor－Systems
Many metal detection applications do not fit into the scope of standard conveyor systems. For this reason, METTLER TOLEDO SAFELINE are able to p
Detection－of－Intracellular－Antigens－by－Flow－Cytometry
实验概要Fix and Perm reagents are designed for use with all commercially available flow cytometers. Alignment and compensation should be performed accor
Measurement－of－Carbon－Fixation－Rates－in－Leaf－Samples
Generation of a Light Curve To address the hypothesis concerning photosynthetic efficiency it is necessary to expose sun and shade leaves to a ran
Videos－for－Inline－Measurement－in－the－Pharmaceutical－Industry
For more information on Pharmaceutical Industry, download the Pharmaceutical brochure : Optimizing Pharmaceutical Processes
Measurement－of－Cell－Adhesion－Under－Static－Conditions
Many different molecules have been described to promote cell adhesion including several cell surface carbohydrate-binding proteins. Measuring cell adh
Detection－of－BrdU－Incorporation－in－DNA－Synthesizing－Cells
Detection of BrdU Incorporation in DNA Synthesizing Cells NOTE: Bromodeoxyuridine is a known carcinogen. Propidium iodine (PI) is known to be toxic an
PCR－Primers－For－Gene－Expression－Detection－or－Quantification
Why PrimerBank?PrimerBank is a public resource for PCR primers. These primers are designed for gene expression detection or quantification (real-time
Detection－of－apoptotic－process－in－situ－using－immunocytochemical
1. INTRODUCTION Apoptosis was observed from invertebrates to lower and higher verterbrates, and intervenes both in physiological and in pathological
Cell－death－detection－in－Xenopus－embryos－by－ELISA
Sample preparationWash embryos 1 x in 25% MMRRemove excess bufferAdd 10 volumes "incubation buffer", i.e. 50 µl for 5 embryosLyse the embryos by gentl
Protocol－for－Dual－Pulse－Labeling－Using－EdU－and－BrdU－Incorporation
实验概要The measurement of cell proliferation is fundamental to the assessment of cell health, genotoxicity, and drug efficacy. Proliferation is traditi
Inline－Analytical－Measurement－Systems－in－Brewing－Industry
New website for the brewing industry highlights the values of digital, in-line analytical measurement systemsThe continuous, real-time data from in-
Calcium－Flux－Measurement－Using－Indo1
实验概要Measure the calcium in cytosol with indo-1.主要试剂DMSO, Imonomycin, RPMI1640, PBS实验步骤1. Dissolve the contents of 1 vial (50 μg indo-1) in 50 μl dry
Measurement－of－GFP－Expression－and－DNA－Content－in－Permeabilized－Cells
ReagentsCells to be studied expressing green fluorescent protein (GFP). Note that the same cell type without GFP is needed as a control.1 X PBS2% Buff
Methods－for－the－Measurement－of－a－Bacterial－Enzyme－Activity－in－Cell－Lysates
AbstractThe kinetic characteristics and regulation of aspartate carbamoyltransferase activity were studied in lysates and cell extracts of Helicobacte
SemiQuantitative－Measurement－of－Proteins－by－Dot－Blotting
Purpose...Concentration of proteins in a crude preparations (such as culture sup) can be estimated semi-quantitatively by using "Dot Blot" method if y
An－Integrative－Procedure－for－Apoptosis－Identification－and－Measurement2
TroubleshootingCritical Steps(1) Don’t trypsinize cells for too long when collecting them.(2) Rotation speed should be no more than 1500 rpm during ce
气相分子吸收光谱仪的计量校准方法
摘要 建立一种科学合理且可操作性强的气相分子吸收光谱仪校准方法。从仪器的工作原理及结构入手，对该类仪器提出了检出限、线性相关系数、定量重复性等性能评价参数。利用国家相关标准物质对其检出限的测量不确定度进行了评定，统一了校准方法，有力地保证了测量数据的准确性、溯源性。对计量技术机构开展该类仪器的校准工
Determination－and－Detection－of－Reactive－Oxygen－Species－(ROS),－Lipid－...
Reactive oxygen species or intermediates are formed by the incomplete reduction of oxygen. Organisms living in aerobic environment generate variou