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Density Gradient Separations in Vertical Tube, Near Vertical Tube, Fixed Angle, and Swinging Bucket Rotors: A Comparative Study
Saturday, September 01, 2007
Owen Mitch Griffith
Over the years, researchers have used density gradient techniques for separating viruses and macromolecular species such as proteins, subcellular organelles, and nucleic acids.
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Ion Exchange for Proteomics
Thursday, February 01, 2007
Xueying Huang
Virginia McKay
Ion exchange is particularly well suited to the separation of biological molecules; however, limitations of HPLC packing materials have restricted its use. Silica-based ion-exchange materials are pH ...
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Tips to Prevent Streaking on 2-D Gels
Tuesday, November 01, 2005
Tom Berkelman
Mary Grace Brubacher
Haiyin Chang
Tim Cross
William Strong
The most common problem encountered with 2-D gels is protein streaking, whether in the horizontal or vertical direction.
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Image Analysis of Neurite Branching: High-Content Screening at High Speed
Thursday, September 01, 2005
Pascal Vallotton
Leanne Bischof
Michael Buckley
Ryan Lagerstrom
Changming Sun
Hugues Talbot
Dadong Wang
Automated image analysis is becoming a central tool for quantifying the effect of candidate drugs on cells.
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Gene Expression Microarrays: Industrial and Clinical Research Applications
Tuesday, February 01, 2005
Alan Dance
In 1961, Francois Jacob and Jacques Monod discovered the biology of gene expression and gene regulation.
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The Importance of Controlled Concentration and Drying in MALDI-TOF Applications
Friday, July 01, 2005
Steve Knight
Matrix-assisted laser desorption/ionization-time- of-flight mass spectrometry (MALDI-TOF MS) is now an accepted and routine analysis technique for the elucidation and quantitation of biomolecules ...
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Fast Gravimetric Testing of Multichannel Pipets
Monday, May 02, 2005
Karl Heinz Lochner
Piston pipets with air cushions have long been the standard equipment in many laboratories, especially in medical research and the life sciences for the transfer of liquids in the microliter range.
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The Significance of pH Stability for Cell Cultures
Thursday, September 01, 2005
Daniela Maurer
Cell culture media generally comprise amino acids, salts, vitamins, other substances, and an anorganic buffer substance (NaHCO3).
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Cell Culture Biochips for Optical Microscopy
Monday, May 02, 2005
Ulf Rädler
Elias Horn
Methods in molecular biology and the understanding of actions inside living cells have changed drastically over the last decade.
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The Value of a Manufacturer’s Pure Water Service Plan
Monday, January 03, 2005
Bruno Rossi
Morgan Norris
From research to manufacturing, the most commonly used reagent in the biopharmaceutical environment is purified water.
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A System That Helps Scientists See Drugs in Tissue Samples
Friday, July 01, 2005
Mark Springer
For drug developers, being able to see where a drug candidate is distributed in a targeted tissue helps them better assess the potential value of that compound as a pharmaceutical product.
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A Differential Pressure Transducer That Ensures Fresh Airflow for Animal Cages
Monday, April 04, 2005
Terry Troyer
Keeping a clean and steady flow of air is extremely important in any enclosed environment.
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Desktop Scanning Electron Microscopy: Filling A Critical Imaging Gap
Friday, August 29, 2008
Steven Berger
Desktop scanning electron microscopy fills a critical gap in imaging capability between convenient but relatively low-power light microscopy with useful magnification up to about 1000×,and high power...
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Finding Analytical Solutions in the Laboratory Using an Electronic Nose
Monday, February 18, 2008
Marion Bonnefille
Some types of electronic noses use ultrafast gas chromatography to measure and capture a unique signature of products via a chemical or olfactive fingerprint.
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Batch Cross-Contamination Monitoring With An Electronic Nose
Thursday, July 10, 2008
Marion Bonnefille
Food and beverage processing systems are under constant scrutiny for cleanliness, accuracy, and repeatability.
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Development of LLDPE Resins: Odor Analysis With an Electronic Nose
Friday, September 26, 2008
Marion Bonnefille
The quality of plastics and packaging is a key issue in many industries, such as food and beverage, pharmaceutical, and cosmetics, both from its safety and protective functions.
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The Benefits of Machine Washing Laboratory Glassware Versus Hand Washing
Wednesday, October 01, 2008
Lisa Choplo
If the aim of the laboratory is to be cost-efficient and provide consistent results, hand washing should not be the process of choice for cleaning laboratory glassware.
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A Membrane Extraction Technique Dedicated to Industrial Wastewater: Membrane-Assisted Solvent Extraction (MASE) and GC-MS Analysis
Tuesday, January 01, 2008
Carole Vincelet
David Benanou
Jean Marc Roussel
The use of membrane materials for the extraction of organic compounds has increased during the past few years for the extraction of analytes in bioanalysis and environmental, food, and industrial ...
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New Ion Chromatography Solutions for Routine Water Analysis
Friday, October 24, 2008
Bernard Sheldon
Frank Hoefler
Anion and cation determination in all types of water is one of the domains of ion chromatography (IC).
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A Method for Determining Oxidation Stability of Petrodiesel, Biodiesel, and Blended Fuels
Monday, February 18, 2008
Andrea Neumann
Thomas Jebens
Volkmar Wierzbicki
The diesel engine was developed in 1892 to allow the use of cost-saving diesel fuel. At the time, the production of diesel was a relatively simple single cut within the atmospheric distillation ...
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