نتایج جستجو برای: sulfur compound
تعداد نتایج: 159341 فیلتر نتایج به سال:
Detailed molecular analysis of complex mixtures such as crude oil and its fractions has been successfully covered by a number groups during the past two decades. On other side, most glaring need is some type method that allows quantitative single class, compound species, or even individual compounds. Here, problem being complicated complexity sample for response factors necessary compounds in a...
gen flask combustion, Part 7. Fresenius Journal of Analytical Chemistry 360: 184–191. Kowalenko CG (2000) Influence of sulfur and nitrogen fertilizer applications and within-season sampling time on measurement of total sulfur in orchardgrass by six different methods. Communications in Soil Science and Plant Analysis 31: 345–354. Kuboyama K, Sasaki N, Nakagome Y, Kataoka M, and Tamura C (1996) S...
OBJECTIVE To determine the molecular factors contributing to progressive cavitating leukoencephalopathy (PCL) to help resolve the underlying genotype-phenotype associations in the mitochondrial iron-sulfur cluster (ISC) assembly system. METHODS The subjects were 3 patients from 2 families who showed no inconsistencies in either clinical or brain MRI findings as PCL. We used exome sequencing, ...
The principal dietary sources of sulfur, the amino acids methionine and cysteine, may not always be consumed in adequate amounts to meet sulfur requirements. The naturally occurring organosulfur compound, methylsulfonylmethane (MSM), is available as a dietary supplement and has been associated with multiple health benefits. Absorption of MSM by the small intestine and accumulation of the associ...
Gaseous sulfide intrusion into seagrasses growing in sulfidic sediments causes little or no harm to the plant, indicating the presence of an unknown sulfide tolerance or detoxification mechanism. We assessed such mechanism in the seagrass Zostera marina in the laboratory and in the field with scanning electron microscopy coupled to energy dispersive X-ray spectroscopy, chromatographic and spect...
The current great concern about plastic pollution opens up opportunities for the production of more sustainable polymers. Inverse vulcanization has emerged as a novel procedure to obtain inorganic-organic hybrid polymeric materials. Sulfur is attained by-product oil refining and makes inverse process due large amount sulfur without useful life. In previous studies, vegetable oils were used como...
Axially chiral biaryls were synthesized by an isoquinoline or 2-pyridine-directed Rh(III)-catalyzed dual C-H cleavage and coupling with internal alkynes in good to excellent yields. Oxidation of isoquinoline derivatives with m-CPBA furnished their corresponding N-oxides, which could be utilized as Lewis base catalysts in asymmetric reactions.
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