نتایج جستجو برای: sulfur geochemistry

تعداد نتایج: 38983  

In the present study, twenty-five male goat kids (20±2.5 kg BW) were used during an 84- day experimental period to determine the effect of source and level of sulfur supplementation on mohair characteristics and performance. Experimental diets were diets containing 0.18% (as control), 0.24% and 0.34% DM inorganic or organic sulfur. The data were analyzed as a 2 × 2 factorial design. Methionine ...

2017
Robert O. Rye

The stable-isotope geochemistry of sulfate minerals that form principally in I-type igneous rocks and in the various related hydrothermal systems that develop from their magmas and evolved fluids is reviewed with respect to the degree of approach to isotope equilibrium between minerals and their parental aqueous species. Examples illustrate classical stable-isotope systematics and principles of...

Journal: :Nature 2015

Journal: :پژوهش های زراعی ایران 0
بهنوش رحیمی رضا صدرآبادی حقیقی

in order to determine the effect of different levels of sulfur bentonite on yield and yield components of canola a factorial experiment was conducted on the basis of randomized complete block design with three replications in mashhad in 2009-2010 growing season. factors included four levels of sulfur bentonite (0, 300, 400 and 500 kg.h-1) and two varieties of canola (modena and zarfam). the res...

Ali Almasi, Mitra Mohammadi, Mohammad Javad Shokoohizadeh, Rouhollah Shokri, Zahra Najafi,

Background: Studies suggest that sulfur may react with plants or monocellular organisms, such as fungi, to produce toxic agents. It has been theorized that sulfur enters cells and affects their respiration. This study reports on a phototroph development that leads to the diminution and/or production of sulfur and release of hydrogen sulfide from public ponds. Methods: This study was conducted ...

Journal: :journal of agricultural science and technology 2011
m. h. farpoor h. r. krouse b. mayer

carbon and sulfur isotopic data are helpful in understanding environmental conditions under which soils are formed. soils from 18 sampling sites along a climotoposequence from higher laleh zar mountains (4,351 m above sea level with xeric-mesic soil moisture-temperature regimes) to shahdad depression (250 m above sea level with arid-hyperthermic soil moisture-temperature regimes) in kerman prov...

Journal: :Minerals 2023

The Heihaibei gold deposit is located in the Eastern Kunlun Orogen Northwest China. mineralization here occurs predominantly quartz veins within faulted granite zones. sulfide mineral assemblage dominated by pyrite and arsenopyrite, with minor chalcopyrite, galena, sphalerite, tetrahedrite, micro-native gold. Weak alterations granites include silicification sericitization, chloritization carbon...

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