ORGANOHALOGEN COMPOUNDS – Volume 66 (2004) 217 Introduction Toxaphene is a broad-spectrum insecticide, was one of the most heavily used agricultural chemicals on a global scale, especially against pests in cotton field and vegetable farms. Basically, commercial production of toxaphene involves the reaction of camphene, chlorine activated by ultraviolet radiation and certain catalysts to yield c...

Studies involving the consumption,metabolism, and elimination of terpenes by small ruminants consuming terpene-laden shrubs as well as those exploring the potential for natural products as rumen modifiers could benefit from a procedure that measures terpenes in both blood and rumen fluid and that is suitable for either serum or plasma. The objective of this study was to modify an existing proce...

Rate constants for the gas phase reactions of O(P) atom with a series of monoterpenes have been determined at ambient temperature (~302-309K) and atmospheric pressure using a relative rate technique. Using the literature rate constants for O(P) + isobutene, cis and trans-2-butene, 3-methyl-1-butene, 2-methyl-2-butene and 2,3-dimethyl-2-butene as the standards, the O(P) rate constants derived fo...

The current study describes the composition of Salvia lavandulifolia (Vahl) essential oils (SlEOs) obtained from plants cultivated in Murcia (Spain), as determined by gas chromatography. Relative and absolute concentrations, the enantiomeric ratios of chiral compounds and the in vitro antioxidant, antienzymatic and antimicrobial activities are described. The main components of the SlEOs were ca...

Free-standing electrode (FSE) architectures hold the potential to dramatically increase gravimetric and volumetric energy density of LIBs by eliminating parasitic dead weight volume associated with traditional metal foil current collectors, however FSE fabrication methods suffer from insufficient mechanical stability, electrochemical performance, or industrial adoptability. Here, we demonstrate...

Thiosemicarbazides are compounds known for their biological activity, particularly their antimicrobial properties, which include activity against fungi. The difficulty of treating fungal diseases induced us to assess the antifungal properties of some novel thiosemicarbazide compounds. We selected the natural products limonene and camphene as sources for the preparation of these new thiosemicarb...

Abstract. Camphene, a dominant monoterpene emitted from both biogenic and pyrogenic sources, has been significantly understudied, particularly in regard to secondary organic aerosol (SOA) formation. When camphene represents significant fraction of emissions, the lack model parameterizations for can result inadequate representation gas-phase chemistry underprediction SOA In this work, first mech...

The physical modeling method was used to study the processes of formation structure sheet blanks during ingotless casting-rolling metals. At same time, on basis theoretical analysis, main parameters are determined, with help which it is possible effectively control crystallization and blanks. studies carried out made establish regularities influence hydrodynamic thermophysical conditions pourin...

Oleoresin samples collected directly from living-trees by three different tapping methods, and four geographical origins were analyzed using two gas chromatography (GC) methods. The GC was coupled to a flame ionization detector (GC-FID) for quantification, mass spectrometer (GC-MS) identifying the chemical composition. Twenty-eight components detected quantified. proportions of each component v...