نتایج جستجو برای: sulphur

تعداد نتایج: 6802  

2007
E Caffau H.-G Ludwig

Context. Sulphur is an element which is formed in the α-process and is easily measured in the gaseous phase in external galaxies. Since it does not form dust, it is the preferred indicator for α-elements, rather than Si or Mg, for which dust corrections are necessary. The measurement of the sulphur abundance in stars is not an easy task, relying mainly on high excitation lines with non-negligib...

2000
T. E. LUDECKE

THE KEY to improving the native tussock grasslands of the South Island is to obtain good legume growth. In these areas, the main nutrient deficiencies which limit the growth of legumes are sulphur, phosphorus and molybdenum. Sulphur deficiencies are very widespread (Walker et al., 195.5; Lobb and Bennetts, 1958; McLeod, 1961). The manner in which a rational fertilizer programme was formulated f...

1943
P. N. Bardhan

It has generally been considered unsafe to give onions, eggs and other sulphur-containing foodstuffs, as well as medicines containing sulphur, to a patient who is receiving the sulphonamide group of drugs. It has been said that the sulphur moiety may lead to sulphsemoglobinsemia which causes cyanosis; the sulphsemoglobin, not being reconvertible into haemoglobin, reduces the oxygen-carrying cap...

2000
RICHARD VISSER

During a study of catalytic hydrodesulphurization of gas oils’ a method was needed not only for the determination of the distribution of sulphur compounds, but also, more importantly, for the determination of total suIphur content. Methods have been published for the determination of the distribution of sulpbur compounds in gas oils using gas chromatography (GC) with a coulometric detector’>3. ...

Journal: :Journal of Experimental Botany 2008
Bettina Falkenberg Isabell Witt Maria Inés Zanor Dirk Steinhauser Bernd Mueller-Roeber Holger Hesse Rainer Hoefgen

A systems approach has previously been used to follow the response behaviour of Arabidopsis thaliana plants upon sulphur limitation. A response network was reconstructed from a time series of transcript and metabolite profiles, integrating complex metabolic and transcript data in order to investigate a potential causal relationship. The resulting scale-free network allowed potential transcripti...

1999
G. J. LEE A. J. WILLIAMS

Sheep from 4 Merino flocks, different in annual clean fleece production when grazed together, were given several nutritional treatments to compare the relationships of wool sulphur with nutrient intake, and with wool growth and plasma cystine. The sheep were selected from a finewool (Fl), a strong wool (S), and 2 medium-Peppin (MP6 and MPlO) flocks. The nutritional treatments varied intakes of ...

Journal: :Journal of experimental botany 2010
Anna Wawrzyńska Małgorzata Lewandowska Agnieszka Sirko

Sulphur deficiency severely affects plant growth and their agricultural productivity leading to diverse changes in development and metabolisms. Molecular mechanisms regulating gene expression under low sulphur conditions remain largely unknown. AtSLIM1, a member of the EIN3-like (EIL) family was reported to be a central transcriptional regulator of the plant sulphur response, however, no direct...

2013
Cédric Hubas Bruno Jesus Mickael Ruivo Tarik Meziane Najet Thiney Dominique Davoult Nicolas Spilmont David M. Paterson Christian Jeanthon

There is a relative absence of studies dealing with mats of purple sulphur bacteria in the intertidal zone. These bacteria display an array of metabolic pathways that allow them to disperse and develop under a wide variety of conditions, making these mats important in terms of ecosystem processes and functions. Mass blooms of purple sulphur bacteria develop during summer on sediments in the int...

2014
Basit Yousuf Raghawendra Kumar Avinash Mishra Bhavanath Jha Gabriel Moreno-Hagelsieb

Bacterial autotrophy contributes significantly to the overall carbon balance, which stabilises atmospheric CO2 concentration and decelerates global warming. Little attention has been paid to different modes of carbon/sulphur metabolism mediated by autotrophic bacterial communities in terrestrial soil ecosystems. We studied these pathways by analysing the distribution and abundance of the diagno...

2009
M. H. ULLAH S.M.I. HUQ M.D.U. ALAM M. A. RAHMAN

The experiments were carried out at the Regional Agricultural Research Station, Rahmatpur, Barisal during the rabi seasons of 2001-2002 and 2002-2003 to study the impact of different sulphur levels on bulb yield, storability and economic return of onion. Sulphur application had significant effect on yield components and bulb yield of onion. The highest bulb yields (19.75 and 19.88 t/ha) were ob...

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