Elemental carbon (EC) content in air is considered a proxy for the diesel exhaust impact at workplaces. This paper examines possibility of estimating EC mine on basis measurements volatile organic compounds (VOC). The measurement study was carried out an underground metal mine. Gas chromatography with mass spectrometry (GC/MS) applied VOC determination, and thermal-optical analysis (TOA) FID de...

This study evaluated the methods of grafting commercial catechin with fatty acids, namely capric acid (C10), lauric (C12), and myristic (C14) through esterification. Specimens beech wood (Fagus sylvatica L.) were impregnated modified catechin-fatty separately, at a 5% concentration diluted in ethanol using vacuum pressure treatment subjected to leaching. The weight percentage gain before leachi...

The degradation of fatty acids of the even series by animal tissues yields Ca fragments (metabolically, acetyl-S-CoA) which may undergo various condensation reactions. Condensation with oxalacetate to form citrate is the established mecha nism for entrance of €2fragments into the tricarboxylic acid cycle, where they are subsequently oxidized to COs (11, 17). Liver possesses the abil ity to fo...

The metabolism of homologous plasma proteins, labeled with lysine-epsilon-C(14), after oral administration to dogs has been investigated. The speed of the various processes involved is indicated by the maximum rate of C(14) O(2) excretion which is attained within 1 to 4 hours, the prompt appearance of protein activity in the plasma and disappearance of non-protein activity from it, both virtual...

abstract tax can be discussed from various aspects and in the meantime, evaluation the tax system performance is very important. this article try to point this out in 2005 and 2008 (the second and final year of the forth development plan) in the iranian economy and in provinces separately. to enable this comparison and homogeneity, iranian provinces are divided into three groups (developed, les...

Oxylipin glucosides (2-4) were isolated from Lemna paucicostata with their structures and absolute configurations elucidated by spectroscopic and chemical methods. Compounds 2-4 were glucosides of C14 oxylipin which were synthesized from alpha-linolenic acid via the 9-lipoxygenase pathway.