The polymer poly( 1,3-phenyl-1,4-pheny1)-4-phenyl-1,3,4-triazole has been investigated for its gas separation properties. This thermally stable and chemically resistant polymer can be processed into membranes by the phase-inversion technique because of its unexpectedly good solubility in formic acid. Homogeneous membranes have been tested with respect to their permeability for several gases, an...

Peabody in 1912 (1) published a paper on the metabolism in pneumonia, in which he reviewed the previous literature and studied among other factors the blood gases and acid-base balance. Since Peabody, a number of other investigators have studied the blood gases and the question of the existence and importance of acidosis in pneumonia. The present paper is a report of observations on these subje...

The Atmospheric Infrared Sounder (AIRS) flying on NASA’s EOS-AQUA platform has channels sensitive to both sulfur dioxide (SO2) and nitric acid (HNO3). We have developed a simple regression retrieval for both of these gases that illustrates the potential for AIRS, and other hyperspectral sounders, to retrieve these two gases. We have cross-validated the SO2 retrievals to those from the OMI instr...

The causes and the prevention of carbon steel corrosion in amine systems are reviewed. The corrosive agents are acid gases, oxygen, heat stable salts, amine degradation products, and, in refineries, gas contaminants such as ammonia and hydrogen cyanide. Corrosion mechanisms are provided for carbon steel exposed to amine solutions and for amine regenerator overhead systems containing aqueous con...

increase of environmental pollution and restricted emission legislations have forced companies to produce automobiles with lower air pollutants. in this respect, discharge of blowby gases into the environment has been prohibited and their recirculation into the combustion chamber is proposed as an alternative solution. in addition, using egr technique to control and reduce nitrogen oxides in in...

The residual biodegradation products of wheat straw lignin attacked by Cyathus stercoreus for thirty days were identified. Low-molecualr-weight nonvolatile materials constituted less than 5% of the total 14C released from labeled lignin. In this portion, syringic acid, vanillic acid, p-hydroxy benzoic acid, acetic acid, and 2-methoxy-succinic acid were found. The majority of the water-soluble b...

Objective: To determine how well neonatal blood base excess and lactate predict outcome following perinatal asphyxia. Study Design: Over 68 months, with around 9000 deliveries, lactate was measured on all blood gases taken from neonatal admissions, as well as mineral base and organic acid whenever electrolytes were required. Infants were classified according to their outcome more than 10 years ...

The emission of sulfur dioxide (SO2, also SO3) and nitrogen oxides (NO, NO2, called NOX) from burning fossil fuel, especially coal which is used to produce energy (electricity and heat) is one of the most important sources of environmental and air pollution. These pollutants are known as "acid gases" causing acid rain and also "indirect greenhouse gases" contributing greenhouse effect. Acid rai...

The tutorial homepage offers a colourful, box-structured table of contents made up of 21 main links covering topics such as the physiology of acid–base disorders, the interpretation of blood gases, respiratory and metabolic treatments, and also includes a direct e-mail link to the author. There is a ‘Terminology’ link that provides detailed definitions and descriptions of 22 common terms, ‘Inde...