Article: Association directory.(trade associations)(Directory)

Article: Is pH paper an acceptable, low-cost alternative to the ...
Chest;  November 1, 1997 ;     700+ words ...The pH of malignant and parapneumonic effusions has ... In a recent meta-analysis, pleural fluid pH had the highest diagnostic accuracy when compared ... at our institution, we noticed that the pH of the pleural fluid was often inconsistent ...

Article: pH
World of Microbiology and Immunology;      700+ words ...pH The term pH refers to the concentration of hydrogen ions (H+) in a solution. An acidic ... whereas a basic environment is relatively depleted of hydrogen ions. The pH of biological systems is an important factor that determines which microorganism ...

Article: Testing pH of Concrete
Concrete International;  April 1, 2007 ;     700+ words ... ... concrete typically begins its life at a highly basic pH of about 13, the pH values at exposed surfaces soon fall as reactions occur ... carbonation. Over time, fronts of carbonated concrete, with pH values of about 8.5, advance below exposed surfaces ...

Article: Effects of pH and Ph fluctuations on microbial ...
Journal of Dairy Science;  March 1, 2002 ;     700+ words ... ... used in two consecutive periods to study the effects of pH and pH fluctuations on microbial fermentation and nutrient flow ... 17.6% acid detergent fiber). Treatments were high pH (constant at 6.4); low pH (constant at 5.7); cycles ...

Article: Inferring pH from conductivity and cation conductivity: ...
Power Engineering;  November 1, 2007 ;     700+ words ...Inferred pH is a method of continuously calculating pH from straight and cation conductivity. The method is not widely used in the United States, but is popular in Europe. Inferred pH is attractive because under certain conditions it can eliminate ...

Article: pH testing: is it really necessary?
Floor Covering Installer;  July 1, 2006 ;     700+ words ... ... will want to read on. We will address several topics: 1. What is pH? 2. What is the difference between pH and a concentration of alkalinity? 3. How to properly test for pH. 4. How to tell if the tests are accurate. 5. What effect pH has ...

Article: Extracellular pH regulates vascular endothelial growth ...
Angiogenesis Weekly;  July 18, 2003 ;     700+ words ... ... amp; NewsRx.net) -- Extracellular pH regulates vascular endothelial growth factor ... to other extracellular parameters such as pH. Thus, the present study investigates the consequences of acidic pH on VEGF binding and activity in endothelial ...