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  • Permeation Chromatography
  • The GPC Method Development Poster offers an introduction to the method development strategies of gel permeation chromatography. (phenomenex.com)
  • 1. A polymer composition comprising ethylene interpolymerized with at least one unsaturated comonomer, wherein the composition is characterized as having: a) a M.sub.w /M.sub.n of lessthan or equal to 3.3, as determined by gel permeation chromatography (GPC), b) an I.sub.10 /I.sub.2 in the range of from greater than 6.6 to about 8.2, as determined in accordance ASTM D-1238, Condition 190.degree. (patentgenius.com)
  • The extraction of HBCDs, and subsequent clean-up procedures are similar to those used for polybrominated diphenylethers, and include Soxhlet, homogenisation, mechanical shaking, sulphuric acid treatment and gel-permeation chromatography. (wur.nl)
  • Gel permeation chromatography, a type of size exclusion chromatography, is an especially useful technique used to directly determine the molecular weight distribution parameters based on the polymer's hydrodynamic volume. (wikipedia.org)
  • Gel permeation chromatography is often used in combination with multi-angle light scattering (MALS), Low-angle laser light scattering (LALLS) and/or viscometry for an absolute determination (i.e., independent of the chromatographic separation details) of the molecular weight distribution as well as the branching ratio and degree of long chain branching of a polymer, provided a suitable solvent can be found. (wikipedia.org)
  • mass spectrometry
  • Supercritical fluid chromatography (SFC) coupled with triple quadrupole mass spectrometry was applied to the profiling of sucrose fatty acid esters (SEs). (go.jp)
  • Quantitative proteomics is mainly performed by two-dimensional gel electrophoresis (2-DE) or mass spectrometry (MS). However, a recent developed method of Quantitative dot blot (QDB) analysis is able to measure both the absolute and relative quantity of an individual proteins in the sample in high throughput format, thus open a new direction for proteomic research. (wikipedia.org)
  • Mass spectrometry (MS) and two-dimensional gel electrophoresis (2-DE) represent the main technologies for quantitative proteomics with advantages and disadvantages. (wikipedia.org)
  • contrast
  • In contrast, targeted proteomics strategies limit the number of features that will be monitored and then optimize the chromatography, instrument tuning and acquisition methods to achieve the highest sensitivity and throughput for hundreds or thousands of samples. (wikipedia.org)
  • reaction
  • John Henderson Knox FRSE (born 1927) is Emeritus Professor of Physical Chemistry at the University of Edinburgh and is considered a distinguished contributor to the fields of reaction kinetics and chromatography. (wikipedia.org)
  • The PCR reaction should be optimized to create a single, strong PCR band, as non-specific bands will increase the background noise of the assay. (wikipedia.org)
  • polymers
  • Transmission Electron Microscopy in combination with staining techniques, but also Scanning Electron Microscopy, Scanning probe microscopy are important tools to optimize the morphology of materials like polybutadiene-polystyrene polymers and many polymer blends. (wikipedia.org)
  • techniques
  • Some of the most common methods for determining these parameters are colligative property measurements, static light scattering techniques, viscometry, and size exclusion chromatography. (wikipedia.org)
  • process
  • The present invention pertains to an ethylene interpolymer composition characterized as having a narrow molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a composition and a fabricated article made from such composition. (patentgenius.com)
  • During the entire chromatography process the eluent is collected in a series of fractions. (wikipedia.org)
  • sample
  • Discovery proteomics optimizes protein identification by spending more time and effort per sample and reducing the number of samples analyzed. (wikipedia.org)
  • Basic
  • The basic principle of displacement chromatography is: there are only a finite number of binding sites for solutes on the matrix (the stationary phase), and if a site is occupied by one molecule, it is unavailable to others. (wikipedia.org)
  • amount
  • It is chosen so that the retention factor value of the compound of interest is roughly around 0.2 - 0.3 in order to minimize the time and the amount of eluent to run the chromatography. (wikipedia.org)