ChemEurope.COM Articles

Quality control of colorimetrically stained gels and blots

Tue, 16 Mar 2010 23:00:00 GMT

In the pharmaceutical and food industry, using a scanner-based system is more recommended than using a camera-based system for the acquisition, documentation and analysis of colorimetrically stained gels, blots and TLC samples. The combination of a ...

Characterization of micelles and liposomes using the Eclipse 3+ AF4 separation system coupled to a DAWN HELEOS II MALS detector

Wed, 02 Dec 2009 23:00:00 GMT

Micelles and liposomes can serve as vehicles used to solubilize and carry bioactive compounds to their site of action, thus increasing their bioavailability. First experience has been made using vitamins and enzymes as functional food additives. ...

Absolute Molar Mass Characterisation

Thu, 26 Nov 2009 23:00:00 GMT

Multi-angle light scattering coupled to SEC or other fractionation methods can provide an absolute means for measuring the molar mass, size and distribution of proteins, polymers and particles of all sorts. Wyatt Technology's MALS also enables the ...

The Danger of Air & Bubbles

Thu, 19 Nov 2009 23:00:00 GMT

Air and bubbles, or fluid aeration and cavitation, can cause numerous problems in a hydraulic and lubrication oil system. Lubrication practitioners should be attentive to abnormal noise, poor component response due to spongy behavior of aerated ...

Calculating VOCs: Not all Low-VOCs Are Considered Equal

Thu, 19 Nov 2009 23:00:00 GMT

Like most coatings, paints, and maintenance products, water repellents are expected to comply with increasingly stringent regulations of Volatile Organic Compounds (VOC), which are any volatile carbon compounds that engage in atmospheric ...

Compressor Oils for the Chemical Industry

Wed, 18 Nov 2009 23:00:00 GMT

The chemical industry relies on very special processing to manufacture many of its products and often times include the use of compressors to achieve the special process conditions required. The selection of a lubricant is not always as easy as ...

The Secret of Bearing Lubrication

Tue, 17 Nov 2009 23:00:00 GMT

At the heart of almost every industrial facility are electric motors, which can render equipment inoperative should their rolling element bearings fail-an occurrence more common than necessary due to strain resulting from improper lubrication

New Silicone Technologies for Skin Care

Sun, 15 Nov 2009 23:00:00 GMT

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. ...

Automated Dynamic Light Scattering

Sun, 08 Nov 2009 23:00:00 GMT

DLS analysis is a widely applied, non-invasive method for measuring the effective size of molecules in solution. This technique yields valuable information for the characterization of molecules and particles. It facilitates formerly laborious and ...

Asymmetric Flow Field Flow Fractionation (AF4) - A Powerful Method for Polymer Characterization

Wed, 04 Nov 2009 23:00:00 GMT

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 ...

Burn injuries under freezing (labor protection) conditions?

Tue, 27 Oct 2009 23:00:00 GMT

"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 ...

ORAC Assay Performed on the POLARstar Omega and PHERAstar FS microplate reader

Mon, 14 Sep 2009 22:00:00 GMT

In all oxygen consuming cells, metabolism and oxidative stress generate several intermediates and byproducts that are collectively known as reactive oxygen species (ROS). ROS are necessary intermediates in the human body, but they are also involved ...

Best Practices to Mitigate Lubricant Contamination

Wed, 02 Sep 2009 22:00:00 GMT

Many assume the contamination of lubricants occurs after the lubricants have been applied to machines. While wear debris and water ingress are expected to contribute to lubricant contamination it doesn't mean maintenance professionals need to accept ...

Bearing grease selection

Wed, 02 Sep 2009 22:00:00 GMT

Rolling-element bearings are used for the precise guidance of moving parts. Frictional losses are extremely small because the bearings rest on rolling elements, enabling very heavy loads to be adsorbed. Rolling-element bearings may be lubricated ...

Improvement of power generation efficiency of solar cells and evaluation by fluorescence spectroscopy

Sun, 23 Aug 2009 22:00:00 GMT

The light in the high-radiance wavelength region of the solar spectrum is not utilized effectively by silicon crystal-based solar cell modules. "Fluorescent materials" convert the ultraviolet component in the sunlight into light in the longer ...

Polyether-Modified Silicones for Cosmetic Applications

Sun, 19 Jul 2009 22:00:00 GMT

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 ...

Helpers of all sizes for analysts

Tue, 23 Jun 2009 22:00:00 GMT

Geologists analyze soil samples, the oil industry studies crude oil, and the steel industry wants to know the composition of slag. These are completely different fields, but all begin the analysis process with a high-temperature fusion treatment of ...

How much LIMS can a researcher put up with?

Tue, 19 May 2009 22:00:00 GMT

Researchers don't want to work with a LIMS and analysts don't like electronic laboratory notebooks (ELN). These types of software are not ideally suited to mapping these two laboratory processes. In companies with R&D and analysis departments, there ...

35 years' experience in "black gold"

Sun, 26 Apr 2009 22:00:00 GMT

There is a paradoxical consequence of the financial crisis: To produce bitumen is more attractive than ever. In the last six months prices for crude oil and, in particular, the consumption of heavy, sulfur-containing marine Diesel fuel (bunker oils) ...

Outsourcing R&D Innovation takes on New Meaning

Sun, 05 Apr 2009 22:00:00 GMT

Innovative drugs are the lifeblood of pharmaceutical companies, but the cost of developing them is rising to unsustainable levels. Pharma executives are already saying that as the economy falters, they foresee bleak prospects and mergers unless ...