نتایج جستجو برای: sulphur fertilizers

تعداد نتایج: 20632  

Journal: :The Science of the total environment 2008
Marlies E W van der Welle Jan G M Roelofs Leon P M Lamers

Although sulphur deposition rates in Europe have considerably decreased over the last decades, sulphate concentrations in freshwater wetlands are still high, as a result of drainage, nitrate pollution, and increased sulphur loads in rivers. High sulphur fluxes may cause sulphide toxicity and eutrophication, and strongly interfere with the biogeochemical cycling of iron and phosphorus. In the pr...

2014
Sushma Mishra Aruna Jain

An experiment was conducted to find out the effect of INM on vegetative growth, flowering and fruiting of Andrographis paniculata. The experiment was followed in a randomized block design with 8 treatments. The different treatments were T1no treatment, T2vermicompost, T3-biofertilizers, T4-chemical fertilizers, T5biofertilizers + vermicompost, T6biofertilizers + chemical fertilizers, T7chemical...

2013
Toshihiko Fujimori Aarón Morelos-Gómez Zhen Zhu Hiroyuki Muramatsu Ryusuke Futamura Koki Urita Mauricio Terrones Takuya Hayashi Morinobu Endo Sang Young Hong Young Chul Choi David Tománek Katsumi Kaneko

Despite extensive research for more than 200 years, the experimental isolation of monatomic sulphur chains, which are believed to exhibit a conducting character, has eluded scientists. Here we report the synthesis of a previously unobserved composite material of elemental sulphur, consisting of monatomic chains stabilized in the constraining volume of a carbon nanotube. This one-dimensional pha...

2008
Li Zhou Wei Dai Shengqiang Wang Yaping Zhou

Burning sulphur-laden transportation fuels results in misty and fuggy air of large cities. The combustion products of sulphur-laden fuels poison the exhaust conversion catalyst and invalidate the catalyst box. As results, the vehicle emission gets worse and worse no matter how advanced the auto technology is. Some sulphur compounds converted to sulphates after combustion and emitted into the at...

2015
Guangmin Zhou Eunsu Paek Gyeong S. Hwang Arumugam Manthiram

Lithium-sulphur batteries with a high theoretical energy density are regarded as promising energy storage devices for electric vehicles and large-scale electricity storage. However, the low active material utilization, low sulphur loading and poor cycling stability restrict their practical applications. Herein, we present an effective strategy to obtain Li/polysulphide batteries with high-energ...

2016
Moinuddin Ghauri Khurram Shahzad Abrar Inayat Zulfiqar Ali Keith R. Cliffe Mehrdad Massoudi

A high pressure oxydesulphurisation technique was investigated to reduce sulphur content, especially at ambient temperature. Prince of Wales coal was chosen for this study. The focus of the study was on the reduction of both pyritic and organic sulphur. The effects of pressure, coal slurry concentration, pH and KOH concentration in a fixed time interval on sulphur removal were studied with a se...

Journal: :Gut 1998
F L Suarez J Springfield M D Levitt

BACKGROUND/AIMS While the social significance of flatus derives mainly from its odour, previous studies have focused on the non-odoriferous components of rectal gas. The aims of the present study were to determine the role of sulphur-containing gases in flatus odour and test the efficacy of a device purported to reduce this odour. METHODS Flatus was quantitatively collected via rectal tube fr...

2010
Ursula Scheerer Robert Haensch Ralf R. Mendel Stanislav Kopriva Heinz Rennenberg Cornelia Herschbach

Sulphate assimilation provides reduced sulphur for the synthesis of cysteine, methionine, and numerous other essential metabolites and secondary compounds. The key step in the pathway is the reduction of activated sulphate, adenosine 5'-phosphosulphate (APS), to sulphite catalysed by APS reductase (APR). In the present study, [(35)S]sulphur flux from external sulphate into glutathione (GSH) and...

2013
Moinuddin Ghauri Abrar Inayat Muhammad Tariq Bashir Keith R. Cliffe

The current study is focused on controlling sulphur emissions by pre-treating coal to remove sulphur prior to combustion using the oxydesulphurisation technique. Three British coals were chosen for the study. Working with these coals gave a better insight to the oxydesulphurisation reactions for pyritic and organic sulphur. Effect of air and oxygen pressure in a fixed time interval on sulphur r...

Journal: :Nature communications 2013
Zhi Wei Seh Weiyang Li Judy J Cha Guangyuan Zheng Yuan Yang Matthew T McDowell Po-Chun Hsu Yi Cui

Sulphur is an attractive cathode material with a high specific capacity of 1,673 mAh g(-1), but its rapid capacity decay owing to polysulphide dissolution presents a significant technical challenge. Despite much efforts in encapsulating sulphur particles with conducting materials to limit polysulphide dissolution, relatively little emphasis has been placed on dealing with the volumetric expansi...

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