International Standards for Coal Preparation.

Preparation of prostate specific antigen standards for immunoradiometric assay

Background: Immunoradiometric assay is one of the most common and precise methods for determination of prostate specific antigen (PSA) in clinical laboratories. Usual use of human serum in routine assays has many disadvantages such as easy contamination and precipitation, instability and unavailability. Thus in order to avoid these problems the artificial matrix was used which acts sim...

International Standards for System Integration

The growing complexity of manufacturing systems and the desire to more tightly couple business processes with manufacturing operations is resulting in many efforts to understand the mechanisms and opportunities for system integration in industrial enterprises. To improve the efficiency of beneficial interactions between systems and system components, the international community is adopting a wi...

Preparation and Transportation of Coal

International Standards for Gm Foods

The introduction of biotechnology into the agri-food world in the 1990s complicated an already difficult regulatory and trade system. At one level, biotechnology and genetically modified (GM) foods increase the potential for trade and the need for a fully functioning international trading system. At another level, the products of this new technology have precipitated a large and difficult debat...

ONLINE METHODS Sample Preparation for Lipid Standards

Lipid standards were purchased from Avanti Polar Lipids, Inc., and Matreya LLC and a list is included in the supplementary information section. A final concentration of 1 µM was desired for the LC-IMS-MS studies. The standards were diluted with chloroform to reach the desired concentration. River Laboratory (Raleigh, NC). Females were mated with fertile males of the same strain to induce pregna...