نتایج جستجو برای: organic zinc
تعداد نتایج: 272537 فیلتر نتایج به سال:
Corrosion scales and deposits formed within drinking water distribution systems (DWDSs) have the potential to retain inorganic contaminants. The objective of this study was to characterize the elemental and structural composition of extracted pipe solids and hydraulically-mobile deposits originating from representative DWDSs. Goethite (alpha-FeOOH), magnetite (Fe(3)O(4)) and siderite (FeCO(3)) ...
New metal-organic frameworks (MOFs) based on zinc and cadmium ions, terephthalic acid, and flexible ligands 1,5-bis(imidazol-1-yl)pentane or 1,6-bis(imidazol-1-yl)hexane were prepared and characterized by X-ray diffraction, thermorgavimetric analysis and IR spectroscopy. The imidazolyl ligands were prepared by a new robust procedure involving the reaction between imidazole and 1,5-dibromopentan...
Zinc (Zn) plays an essential role in the human and animal body system. Zinc deficiency might cause many disorders, so it is important to provide a sufficient amount of this microelement in both animals and humans. One of the most important sources of Zn is milk. The purpose of this study was to determine whether Zn can pass through the mammary epithelial cell into milk by a cotransport system w...
The aim of the study was to estimate the influence of soil pH on the uptake of copper, zinc, and manganese by Valeriana officinalis. Preliminary studies involved soil analyses to determine acidity, organic matter content, and copper, zinc, and manganese total and bioavailable forms. The study involved atomic absorption spectrometry to determine the concentration of the elements, and mineral soi...
Due to low availability of zinc and copper in calcareous soils and the antagonism of these nutrients with each other, the study of their effects on growth and chemical composition of rice seems to have great importance. Also, the relations among different chemical forms of Zn and Cu and plant responses are very important, which can be used in investigation of antagonisms of these nutrients as w...
Zinc is an essential micronutrient which plays a macro role in the growth and productivity of the plants. Zinc (Zn) deficiency hinders metabolic and physiological activity in plants due to its inevitable role as an enzyme cofactor. Many Indian soil exhibit Zn deficiency with the content much below the critical level of 1.5ppm. The conditions that make unavailability of zinc to plants are high p...
The role of maternal dietary zinc supplementation in protecting the embryos from maternal hyperthermia-induced negative effects via epigenetic mechanisms was examined using an avian model (Gallus gallus). Broiler breeder hens were exposed to two maternal temperatures (21°C and 32°C) × three maternal dietary zinc treatments (zinc-unsupplemented control diet, the control diet + 110 mg zinc/kg ino...
We report a low temperature C lithographic method for fabricating hybrid metal oxide/organic field-effect transistors (FETs) that combine a zinc–indium–oxide (ZIO) semiconductor channel and organic, parylene, dielectric layer. The transistors show a field-effect mobility of 12 0.8 cm V s , on/off ratio of 10 and turn-off voltage of V. This work demonstrates that organic and inorganic layers can...
Zinc (Zn) as a micro mineral is essential for growth, skeletal development, and immune competence in chickens (Hudson et al., 2004). Inorganic Zn salts, such as sulphate and oxide, are generally supplemented in diets to meet the Zn requirement of chickens (Cao et al., 2002). However, in the recent past Inorganic trace minerals (ITMs) have been replaced by organic trace minerals (OTMs) because o...
In this work, zinc ferrite magnetic and zinc ferrite-graphene oxide nanocomposite were synthesized through a facile hydrothermal method and dye removal capability as an adsorbent were studied. Fourier transform infrared spectroscopy FT-IR, X-ray diffraction XRD and scanning electron microscopy SEM were used to characterize the synthesized nanocomposite. The UV-Vis results showed that the additi...
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