Diene Number of Monocyclic Monoterpene Hydrocarbons
نویسندگان
چکیده
منابع مشابه
The Effects of Long-Term, Low-Level Exposure to Monocyclic Aromatic Hydrocarbons on Worker's Insulin Resistance
OBJECTIVES This study was designed to investigate whether long-term, low-level exposure to monocyclic aromatic hydrocarbons (MAHs) induced insulin resistance. METHODS The subjects were 110 male workers who were occupationally exposed to styrene, toluene, and xylene. One hundred and ten age-matched male workers who had never been occupationally exposed to organic solvents were selected as a co...
متن کاملIsotope ratio analysis by HRGC-MS of monoterpene hydrocarbons from citrus essential oils.
The isotope ratio of monoterpene hydrocarbons in citrus essential oils of different origins was measured by ordinary high-resolution gas chromatography-mass spectrometry (HRGC-MS). The isotope ratio (Ir) was determined by the ratio of the isotope peak intensity (m/z 137) to the molecular mass peak intensity (m/z 136) of the monoterpene hydrocarbons. The accuracy of Ir was examined by measuring ...
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background: the incomplete burning of fuel in engine of vehicles, evaporation of petrol from gas stations, and also car carburetor cause unburned hydrocarbons to be emitted in ambient air of cities and gas station locations. from unburned hydrocarbons; monocyclic aromatic hydrocarbon influence to citizen's health and benzene is known as carcinogenic compounds. the objectives of this study are t...
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The microbial degradation pathways of bicyclic monoterpenes contain unknown enzymes for carbon-carbon cleavages. Such enzymes may also be present in the betaproteobacterium Castellaniella defragrans, a model organism to study the anaerobic monoterpene degradation. In this study, a deletion mutant strain missing the first enzyme of the monocyclic monoterpene pathway transformed cometabolically t...
متن کاملNumber of Kekule Structures as a Function of the Number of Hexagons in Benzenoid Hydrocarbons
The enumeration of Kekule structures has fasci nated several researchers since the first systematic studies of benzenoids in terms of graph theory [1-9] , Apart from the recognized importance of Kekule structures in organic and physical chemistry they also have purely mathematical interest. Refer ence is made to a recent article in the present jo u r nal [10] along with the bibliography the...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1959
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.80.2_198