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09-22-2010
High molecular weight polymers, bio molecules or particles in a range of a few nanometers up to several microns are more and more important in science and technology. Many applications are based on the specific properties of these materials. For this reason, an exact knowledge of the molar ...
11-16-2009
In today’s competitive skin care market, consumers look for a range of benefits, superior aesthetics and cost effectiveness. In response, formulators strive to create products that are multifunctional, easy to use and effective in small quantities. At the same time, the most successful ...
11-09-2009
INTRODUCTION From the late 1980s commercial Dynamic Light Scattering (DLS) detectors started being used in commercial biophysical laboratories throughout the world. These instruments enabled size measurements of small volumes of proteins and other biomaterials in solution to be made, with ...
11-05-2009
The AF4-MALS combined technique can serve as a routine method for polymer analysis and characterization. AF4 provides separation efficiency entirely comparable with traditionally used and so far dominating SEC. In addition, it yields superior separation of branched polymers, polymers ...
Optimal protection when handling cryogenic liquefied gases
10-28-2009
"A little splash of liquid nitrogen hasn't hurt anybody" – this happens to be a widespread opinion in many laboratories. The real dangers connected to cryogenic gases many people had to learn firsthand, unexpected and painful. Skin irritation, cell and tissue damage or severe burn injuries ...
07-20-2009
Abstract Polyether-modified silicones have a long history of use in the personal care industry as emulsifiers and dispersants, as well as stabilizers for water-in-oil systems. However, because of their external phase type, water-in-oil systems tend to display poor aesthetics, such as ...
Z' value of 0.92 indicates a highly robust assay combined with high quality instrumentation
04-27-2009
Introduction Immunoglobulins or antibodies are proteins that are involved in the immune response. They bind with high affinity at exogenous substances (antigens). Immunoglobulins (Ig) are classified according to the structure. The most present antibody in plasma is IgG. It is part of the ...
08-28-2008
Simple, fast and cost effective alternative to electrophysiological hERG testing Uses fluorescence polarization rather than a radioligand method Results show great similarity to traditional hERG testing methods Introduction The potential for cardiotoxic side-effects continues to challenge ...
08-25-2008
Linear concentration trends were seen at 340 and 260 nm for NADH and NADPH The limit of detection (LOD) for NADH is 309 ng/mL and for NADPH it is 931 ng/mL This assay can be performed on the SPECTROstar, FLUOstar, and POLARstar Omega microplate readers #img4500#Introduction Nicotinamide ...
Using mills as efficient and ecologically friendly synthesis reactors
06-25-2008
The term “green chemistry” is commonly used to describe chemical procedures which meet specific requirements with regards to the conservation of resources and protection of the environment. The objective is to avoid undesired by-products by selecting adequate reaction procedures and media. A ...
