نتایج جستجو برای: sulphur

تعداد نتایج: 6802  

Journal: :Journal of environmental biology 2010
R C Jaggi R K Sharma

Field experiment were conducted at CSK HPKV Research Farm, Palampur during Rabi seasons of 2000-01 and 2001-02, to study the response of onion (Allium cepa var Patna red) at four sulphur levels (0, 15, 30 and 60 kg ha(-1)) applied through Gypsum and S95. The analysis was done to allocate the limited availability of sulphur for maximizing net profit over fertilizer cost. The results show that th...

Journal: :Journal of experimental botany 2004
Victoria J Nikiforova Bertrand Gakière Stefan Kempa Monika Adamik Lothar Willmitzer Holger Hesse Rainer Hoefgen

A genomics analysis on sulphur metabolism has been conducted at the level of transcriptomics and metabolomics. The analysis of these data after applying bioinformatic tools is to reveal novel findings. The findings are discussed and the knowledge obtained from comparable analyses on sulphur metabolism and other plant nutrient genomic studies is reviewed. The analysis of the response of the tran...

2016
Judit Krajkó Zsolt Varga Maria Wallenius Klaus Mayer Rudy Konings

The applicability and limitations of sulphur isotope ratio as a nuclear forensic signature have been studied. The typically applied leaching methods in uranium mining processes were simulated for five uranium ore samples and the n(34S)/n(32S) ratios were measured. The sulphur isotope ratio variation during uranium ore concentrate (UOC) production was also followed using two real-life sample set...

Journal: :Waste management 2012
Shane Morrin Paola Lettieri Chris Chapman Luca Mazzei

Gasification of solid waste for energy has significant potential given an abundant feed supply and strong policy drivers. Nonetheless, significant ambiguities in the knowledge base are apparent. Consequently this study investigates sulphur mechanisms within a novel two stage fluid bed-plasma gasification process. This paper includes a detailed review of gasification and plasma fundamentals in r...

2006
W. M. Kwiatek A. Banaś K. Banaś A. Kisiel G. Cinque G. Falkenberg

Sulphur is vital for almost all living organisms by participating in a wide variety of metabolic processes. Nevertheless its biochemistry is only partially understood, due to it a few tools such as X-ray absorption near edge structure may be used to determine its chemical speciation in biological system. In this paper we focused on analysis of composition and elemental distribution in tissue st...

1998
Barry Ryan Angelo Ledda

The Jura-Cretaceous coal seams of the Currier, Mist Mountain, &thing and Gates formations generally formed in delta or strand plain environments with little marine influence. The sulphur contents of coal from these formations is therefore generally low, nearly always less than I % and often less than 0.5 %. Coalbearing formations of the Cretaceous Nanaimo and Skeena groups were deposited in coa...

Journal: :European journal of histochemistry : EJH 2007
M Stoltenberg S Juhl G Danscher

Bismuth - sulphur quantum dots can be silver enhanced by autometallography (AMG). In the present study, autometallographic silver enhanced bismuth-sulphur nanocrystals were isolated from unfixed cryo-sections of kidneys and livers of rats exposed to bismuth (Bi207) subnitrate. After being subjected to AMG all the organic material was removed by sonication and enzymatic digestion and the silver ...

2009
J. D. THUMANN

Sublimation can be caused not only by irregular S02 production, due to unsteady supply of sulphur, but also by low combustion temperatures. These can occur when insufficient sulphur is pumped into the burner, as in the case of a clogged nozzle, but also because of cold air·used for the combustions. This is especially the case if the S02 production is below its minimum rating for the plant, whic...

Journal: :Journal of environmental biology 2008
A K Dwivedi B D Tripathi Shashi

Present study deals with the relationship between ambient air sulphurdioxide and sulphate content in leaf of selected tropical plant species, Ficus religiosa. The study reveals a positive correlation between ambient air sulphur dioxide and sulphate in the leaves. Two way ANOVA finds the obtained values to be highly significant (p < 0.001). Amount of sulphate in leaves shows positive correlation...

In view of pollution prediction modeling, the study adopts homogenous (random forest, bagging, and additive regression) and heterogeneous (voting) ensemble classifiers to predict the atmospheric concentration of Sulphur dioxide. For model validation, results were compared against widely known single base classifiers such as support vector machine, multilayer perceptron, linear regression and re...

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