نتایج جستجو برای: manganese and nickel

تعداد نتایج: 16842044  

2016
James Bellow JAMES A. BELLOW Stanislav Groysman Maryam Yousif

DESIGN OF FIRST-ROW TRANSITION METAL BIS(ALKOXIDE) COMPLEXES AND THEIRREACTIVITY TOWARD NITRENE AND CARBENE TRANSFERbyJAMES A. BELLOWAugust 2016Advisor: Dr. Stanislav GroysmanMajor: Chemistry (Inorganic)Degree: Doctor of PhilosophyThe novel alkoxide ligand [OCtBu2Ph], or [OR], was synthesized in a single step as a lithium salt.It was then reacted ...

Journal: :Carbon Resources Conversion 2022

The elucidation of the selective catalytic reduction mechanisms over state-of-the-art metal-promoted zeolites is essential for nitric oxides removal in automobile and stationary source applications. In this work, H/ZSM-5 catalysts modified with transition metals, including copper, manganese, nickel, were prepared by using an incipient wetness impregnation method evaluated ammonia. Results indic...

F Aflaki F Monsefrad J.M Regenstein M Batebi-Navaei M karaminasab R Vajdi S.M Hosseini,

Concentrations of heavy metals were determined in muscles of Kutum (Rutilus frisii kutum) collected from the central part of the southern end of the Caspian Sea during February 2011. Except for silver (Ag) and nickel (Ni) which were below the limits of detection, the average levels of arsenic (As), cadmium (Cd), copper (Co), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), sele...

2014

Nowadays harmonization of sanitary and hygienic standards of environmental quality with international standards is crucial part of integration of Russia into the international community. Harmonization of Russian and international ambient air quality standards may be realized by risk-based standards development. In this paper approaches to risk-based standards development and examples of these a...

2008
Viroj Wiwanitkit

Heavy metal is widely used in industries and presents as a problematic environmental pollution. Some heavy metals, especially lead and mercury, are well described for their occupational and environmental intoxication whereas the other minor heavy metals are less concerned. In this article, the author will present the details of occupational and environmental minor heavy metal intoxication. This...

2016
S. Prema

The Manganese (II), Cobalt (II) and Nickel (II) complexes of phenyl glycine-o-carboxylic acid were prepared and characterized by magnetic studies, molar conductance studies, thermal analysis and spectroscopic techniques (FTIR and UV). The IR spectral studies revealed that the phenyl glycine-ocarboxylic acid behaves as a bidentate ligand. Electronic spectral studies and magnetic studies suggest ...

2005
Bryan G. Hopkins Jason W. Ellsworth

Plants have need for about 18 essential nutrients. Of these essential nutrients, several are classified as trace metals, namely: zinc, iron, manganese, copper, boron, molybdenum, cobalt, and nickel. In addition, other trace metals commonly exist in soil that can be taken up, such as arsenic, chromium, iodine, selenium, and others. Some of these elements are more or less inert in the plant and o...

2006
M. Tuzen M. Soylak

The concentrations of chromium, nickel, copper, manganese, zinc, iron, cobalt and aluminum ions in drinking waters from eight sites of Tokat, Turkey, were determined by atomic absorption spectrometry. The values found the present work for the heavy metal contents of the drinking water samples of Tokat, Turkey were below the maximum tolerable limits set by the World Health Organisation (WHO) and...

Journal: :Molecules 2017
Sophie Bezzenine-Lafollée Richard Gil Damien Prim Jérôme Hannedouche

This review provides an outline of the most noteworthy achievements in the area of C-N, C-O and C-P bond formation by hydroamination, hydroalkoxylation, hydrophosphination, hydrophosphonylation or hydrophosphinylation reaction on unactivated alkenes (including 1,2- and 1,3-dienes) promoted by first-row late transition metal catalytic systems based on manganese, iron, cobalt, nickel, copper and ...

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