نتایج جستجو برای: zinc compounds
تعداد نتایج: 297332 فیلتر نتایج به سال:
An innovative approach to stimulate the production of plant secondary metabolites (PSM) is use encapsulated bioactive agents. Zinc-alginate microparticles [microspheres (ALG/Zn) and microcapsules (CS/ALG/Zn)] were applied near root zone soilless cultivated strawberries (Fragaria × ananassa Duchesne) ensure a constant supply an essential micronutrient zinc ions throughout whole period maturation...
اسانس گیاهان (خشک شده در سایه)، tanacetum tenuisectum , tanacetum polycephalum به دو روش: 1- تقطیر با آب 2- برای اولین بار به روش میکرواستخراج فاز جامد در فضای فوقانی گرفته شد و به روش gc/ms مورد آنالیز و شناسایی واقع گردید. عمده ترکیبات اسانس سرشاخه های گلدار گیاه (tanacetum polycephalum) hydrodistillation % compounds 12.07 camphor 10.66 1, 8- cineole 9.57 chrysanthenyl acetate – t...
To gain a better understanding of the mechanism of action of the metal cation-containing chemotherapeutic drug motexafin gadolinium (MGd), gene expression profiling analyses were conducted on plateau phase human lung cancer (A549) cell cultures treated with MGd. Drug treatment elicited a highly specific response that manifested in elevated levels of metallothionein isoform and zinc transporter ...
Zinc has been shown to be an element essential to the life and growth of rats, but as yet there is no clear indication of what its function may be in metabolism. There are several reports of the occurrence of zinc in pure biological compounds. Scott and Fisher (1) have shown zinc to be necessary for the crystallization of insulin, although other metals were also effective. Keilin and Mann (2) r...
Modern agriculture pays attention to improving agricultural production by producing zinc-enriched crops through zinc-solubilizing bacteria strengthen the bioeconomy. Zinc deficiency in soil reduces plant growth and also leads less uptake of zinc edible portion plants. Therefore, content parts plants can be increased biofortification approach. However, most approaches are laborious need expensiv...
The removal of intervening sequences (introns) from a primary RNA transcript is catalyzed by the spliceosome, a large ribonucleoprotein complex. At the start of each splicing cycle, the spliceosome assembles anew in a sequentially ordered manner on the pre-mRNA intron to be removed. We describe here the identification of a series of naphthalen-2-yl hydroxamate compounds that inhibit pre-mRNA sp...
Inexpensive, less-toxic ZnCl2 serves as the catalyst for selective cross-coupling of enynones and diazo compounds, an unprecedented reaction pathway for zinc carbenoids. A cascade sequence comprising formal cyclization/cross-coupling leads to a variety of 2-alkenylfurans.
The combined action of immobilized hydroxylaminobenzene mutase and zinc in a flow-through system catalyzes the conversion of nitroaromatic compounds to the corresponding ortho-aminophenols, including a novel analog of chloramphenicol.
Assessment of dietary zinc status in a population requires several steps, consisting of the measurement of food intake distributions in the population; the analysis of local staple foods, from which zinc intake distributions can be determined, and the comparison of zinc intakes with requirement estimates to determine the risk of inadequate intakes. In low-income countries, these steps may be co...
The structures of three novel compounds prepared from the reaction of the lower-rim 1,3-diacid calix[4]arene (LH(2)) with lithium carbonate (1), t-butyl-lithium (2) and zinc acetate (3) are reported.
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