This paper describes a physiologically based toxicokinetic model for 1,3-butadiene uptake, distribution, and metabolic clearance in mice. Model parameters for metabolic activity were estimated from the correspondence between computer simulation studies and experimental results as published in the literature. The parameterized model was validated with independent literature data. With the result...

Land use of sewage sludge is the primary disposal method in Shanxi, accounting for 42.66% of all. To determine the ecological risk of heavy metals in sewage sludge, contents of seven heavy metals in sewage sludge from 9 municipal waste water treatment plants (WWTPs) that had the highest application for land use were determined. The order of the measured concentrations was: Zn > Cr > Cu > Ni > P...

Testing the critical chloride content (Ccrit) in laboratory samples or retrieved from structures enhances understanding of rebar corrosion initiation concrete and can result a significant improvement predicting residual service life ageing structures. A possible drawback test methods for Ccrit is that they be time-consuming. In this work, different accelerated testing are studied compared. It f...

The effect of increasing extracellular potassium concentration (Ko) upon electrical ventricular defibrillation threshold was investigated in pentobarbital anesthetized dogs treated with intravenous potassium chloride. Defibrillation threshold fell duirng potassium intoxication. The percent decrease in defibrillation threshold was linearly related to the logarithm of Ko and to the potassium equi...

The recognition of high risk groups in the setting of occupational standards in the United States really appears to date from the establishment of OSHA of 1970 and the concomitant mandate for the development of criteria for Federal occupational exposure standards. Although the ACGIH recommended threshold limit values (TLV's) had been available as guidelines in increasing numbers since shortly a...

Initiation of corrosion on reinforcing bars occurs when a critical chloride concentration is achieved. A universal value for the chloride concentration that causes depassivation has not been agreed upon for carbon steels due to a variety of experimental factors. The chloride threshold depends on the rebar material, rebar surface condition, testing environment, method of detection, definition of...

L-alanine cadmium chloride (LACC) crystals doped with thiourea were grown by slow evaporation technique. The solubility of the samples were determined gravimetrically at various temperatures in the range 30 50 o C. Single crystals of thiourea doped L-alanine cadmium chloride were tested for the crystal structure by single crystal XRD studies. The values of SHG efficiency and laser damage thresh...

In recent years, in various sectors of our society, there have been nationalist stirrings which were crystallized and articulated by the late Claro M. Recto, There were jealous demands for the recognition of Philippine sovereignty on the Bases question. There were appeals for the correction of the iniquitous economic relations between the Philippines and the United States. For a time, Filipino ...