According to Environmental Protection Agency (EPA) regulations, the use of ultra‐low sulfur diesel (ULSD) has been mandated for all on‐highway transportation diesels since 2006. To comply with the EPA regulations, biodiesel must meet the same ULSD standard for total sulfur which is set at a maximum of 15 ppm. Generally, biodiesel contains lower sulfur than fossil diesel. However, due to the div...

Sulfur is an essential element for the entire biological kingdom because of its incorporation into amino acids, proteins and other biomolecules. Sulfur atoms are also important in the iron-containing flavoenzymes. Unlike humans, plants can use inorganic sulfur to synthesize sulfur-containing amino acids. Therefore, plants are an important source of sulfur for humans. Sulfur-containing compounds...

To identify the actual substrate of the glutathione-dependent sulfur dioxygenase (EC 1.13.11.18) elemental sulfur oxidation of the meso-acidophilic Acidithiobacillus thiooxidans strains DSM 504 and K6, Acidithiobacillus ferrooxidans strain R1 and Acidiphilium acidophilum DSM 700 was analysed. Extraordinarily high specific sulfur dioxygenase activities up to 460 nmol x min(-1) (mg protein)(-1) w...

Chlorella pyrenoidosa Chick (Emerson strain 3) utilizes thiosulfate for growth as effectively as sulfate, and more effectively than a variety of organic sulfur compounds containing sulfur in various oxidation states. Thiosulfates, differentially labeled with (35)S in either the SH- or SO(3) - sulfur moieties, were used to follow the incorporation of thiosulfate-sulfur into constituents of the i...

complex heat transfer phenomena (including unsteady state conduction, convection and solidification processes) occur in steel belt conveyer sulfur granulating method. numerical simulation of this technique is performed via a comprehensive and multifaceted one dimensional model. since the air situated between the adjacent sulfur pastilles is essentially stagnant, therefore, the surface temperatu...

Dietary inorganic sulfur is the minor component in our diet, but some studies suggested that inorganic sulfur is maybe effective to treat cancer related illness. Therefore, this study aims to examine the effects of inorganic sulfur on cell proliferation and gene expression in MDA-MB-231 human breast cancer cells. MDA-MB-231 cells were cultured the absence or presence of various concentrations (...

sulfur mustard has been employed in chemical warfare in certain regions including iran. the short and long term biological effects of sulfur mustard contamination have been studied in both basic and clinical aspects. sulfur mustard has been shown to induce a vast array of pathological effects in affected persons. in addition to skin, lung, eyes and gastrointestinal disturbances, sulfur mustard ...

Penggunaan minyak goreng secara berulang merupakan salah satu pemicu terjadinya kerusakan heparyang seringkali ditandai dengan meningkatnya kadar SGPT dan SGOT dalam darah. Penelitian ini bertujuanuntuk mengetahui efek pemberian ekstrak etanol kulit petai (P. speciosa) pada R. norvegicus yang terpaparminyak bekas indikator SGOT. dimulai ekstraksi petaiuntuk kemudian digunakan sebagai sumber ant...

Due to its high theoretical capacity, high energy density, and easy availability, the lithium-sulfur (Li-S) system is considered to be the most promising candidate for electric and hybrid electric vehicle applications. Sulfur/carbon cathode in Li-S batteries still suffers, however, from low Coulombic efficiency and poor cycle life when sulfur loading and the ratio of sulfur to carbon are high. ...

Gas phase and particular phase sulfur have been measured at various locations in the Los Angeles basin to determine atmospheric conversion rates and mechanisms. A new technique was developed for the measurement of particulate sulfur. From measurements of the particulate to gas phase sulfur ratio near the major stationary sources and far downstream and from estimates of travel time determined by...