نتایج جستجو برای: n03

تعداد نتایج: 123  

Journal: :Zeitschrift für Kristallographie - New Crystal Structures 2009

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Journal: :Agricultural and Food Science 1989

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2007
John Paul

Two field experiments (Spring, 1974 and 1975) were conducted on Myakka fine sand to determine the effect of lime and nitrogen source on the development of Fusarium wilt of cucumber and watermelon. The same site, with the same experimental design, was used for each experiment. In both experiments, gross yields were increased and wilt development decreased by raising the soil pH with hydrated lim...

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Journal: :Japanese Journal of Pharmacology 1992

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2001
R. Sarmiento

The influence of three salts (KN03, NH4N03 and (NH4>2S04) in different concentrations, on the growth and mineral composition of olive seedlings cultured in vitra and in greenhouse conditions, was studied. The best growth was obtained in in vitra culture through the applications of NH4N03, in concentrations of 10 and 20 mM of N. Addition of (NH4)2S04 clearly damaged the seedlings and increased t...

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2017
Bahman Eghball Brian J. Wienhold John E. Gilley Roger A. Eigenberg B. Eghball

In order to apply manure or compost to fulfill the nutrient requirements of a crop, knowledge of the amount of nutrients mineralized following application is needed. Nutrient mineralization from applied manure depends on temperature, soil moisture, soil properties, manure characteristics, and microbial activity. Since these factors cannot be accurately predicted, nutrient mineralization from ap...

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2013
Michaela Harbeck Lisa Seifert Stephanie Hänsch David M. Wagner Dawn Birdsell Katy L. Parise Ingrid Wiechmann Gisela Grupe Astrid Thomas Paul Keim Lothar Zöller Barbara Bramanti Julia M. Riehm Holger C. Scholz

Yersinia pestis, the etiologic agent of the disease plague, has been implicated in three historical pandemics. These include the third pandemic of the 19(th) and 20(th) centuries, during which plague was spread around the world, and the second pandemic of the 14(th)-17(th) centuries, which included the infamous epidemic known as the Black Death. Previous studies have confirmed that Y. pestis ca...

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2012
William S. Sheldrick

The stable ternary copper(II) complexes of ATP and ADP, [Cu(HoATP)(phen)]2 • 7 HoO (2) and [Cu4(HADP)2(bipy)4(H20)2(N03)2] • 2 N0 3 (3), have been isolated from aqueous solution at respective pH values of 2.8 and 4.0. Their structures have been established by single crystal X-ray diffraction. Tridentate coordination of each of the Cu atoms by ono a-, one ßand one y-phosphate O atom of one ATP m...

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ژورنال: سرامیک ایران 2017
حسینی زاده, علی, محمدی, خیراله,

هدف از این پژوهش تولید نانو پودرهای α-Al2O3 با روش سنتز احتراقی محلول می­باشد. دلیل انتخاب این روش سرعت، مقرون به صرفه بودن و همچنین تولید مستقیم α-Al2O3 بدون نیاز به یک مرحله آنیل اضافی می­باشد. α-Al2O3 ذاتا یک ماده ترمولومینسانس است و ما به دنبال بهبود خواص ترمولومینسانسی آن برای استفاده به عنوان یک دوزیمتر هستیم. در این مقاله به منظور بهبود خواص ترمولومینسانس α-Al2O3 از ناخالصی­های مس و لیتی...

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2003
M. E. HASSAN K. T. SHANMUGAM

A positive selection method for isolation of nitrogenase-derepressed mutant strains of a filamentous cyanobacterium, Anabaena variabilis, is described. Mutant strains that are resistant to a glutamate analog, L-methionine-D,L-sulfoximine, were screened for their ability to produce and excrete NH4' into medium. Mutant strains capable of producing nitrogenase in the presence of NH4' were selected...

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