Probing the properties of methyl cyanide sources
نویسنده
چکیده
A survey of 27 galactic star-forming regions in the 6K −5K and 5K −4K CH3CN lines at 110 and 92 GHz, respectively, was made. Twenty-five sources were detected at 110 GHz and nineteen at 92 GHz. The strongest CH3CN emission arise in hot cores in the regions of massive star formation. CH3CN abundance in these objects is increased up to 10−9 or larger. Weaker CH3CN lines were found in a number of sources. They may arise in warm (30–50 K) clouds.
منابع مشابه
Biochemical properties and biological functions of the enzyme rhodanese in domestic animals
The enzyme rhodanese (thiosulfate: cyanide sulfurtransferase) is a ubiquitous enzyme and its activity ispresent in all living organisms. Many functions including cyanide detoxification, formation of iron-sulfurcenters and participation in energy metabolism have been attributed to this enzyme. The enzyme catalyzesthe transfer of a sulfur atom from sulfane containing compounds (such as thiosulfat...
متن کاملComparison of Adsorption Properties of Activated Carbons with Different Crops Residues as Precursors for Gold Cyanide Recovery: An Iranian Gold Industry Guide
Adsorption of gold cyanide on three types of Activated Carbons (ACs) has been investigated in batch and column adsorption conditions. Applied ACs have been derived from different crops precursors i.e., coconut shell (CAC), peach stone (PAC), and walnut shell (WAC). As peach stone and walnut shells are abundant agricultural residues in Iran, the activated carbons produced from these precurso...
متن کاملPreparation, Characterisation and Antimicrobial Activities of Some Novel Nitriles and Imidazolines
Reaction between 5-methyl-3-aminoisoxazole and ?-acetamidophenylsulpho-nylchloride yielded compound 1. Hydrolysis of compound 1 gave a starting compound 4-methoxybenzal-?-5-methyl isoxazol-3-yl-sulphonamido aniline 2. The compound 2 on condensation with different aldehydes and potassium cyanide yielded the nitriles 3a-l. Cyclocondensation between oxazolinone and compound 2 yielded imidazolines ...
متن کاملDetermination of molecular gas properties using methyl cyanide lines
A survey of 27 galactic star-forming regions in the 6K−5K , 5K − 4K , and 8K − 7K CH3CN lines at 110, 92, and 147 GHz, respectively, was made. Twenty-five sources were detected at 110 GHz, nineteen at 92 GHz, and three at 147 GHz. The strongest CH3CN emission arise in hot cores in the regions of massive star formation. CH3CN abundance in these objects is larger than 10 due to grain mantle evapo...
متن کاملتعیین سینیتیک و کارایی فرآیند فتوکاتالیستی دی اکسید تیتانیوم در حذف رنگ RB5) Reactive Black 5) و سیانید از محلول های آبی
Background and purpose: Dyes and cyanide are the most important sources of environmental pollution, found in industrial wastewater, which are harmful for human health and environment. The purpose of this research was to investigate the Kinetic and efficiency of titanium dioxide photacatalytic process in removal of Reactive Black 5 (RB5) dye and cyanide from aquatic solution in a batch system....
متن کامل