نتایج جستجو برای: zinc compounds

تعداد نتایج: 297332  

Journal: :Turkish Journal of Agriculture and Forestry 2021

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...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده علوم پایه 1392

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...

Journal: :Cancer research 2005
Darren Magda Philip Lecane Richard A Miller Cheryl Lepp Dale Miles Mimi Mesfin John E Biaglow Vincent V Ho Danny Chawannakul Shailender Nagpal Mazen W Karaman Joseph G Hacia

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 ...

2003
E. HOVE C. A. ELVEHJEM E. B. HART

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...

Journal: :Frontiers in agronomy 2022

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...

Journal: :RNA 2012
Vishal Patil Josh C Canzoneri Timur R Samatov Reinhard Lührmann Adegboyega K Oyelere

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...

Journal: :Chemical communications 2014
Jesús González Luis A López Rubén Vicente

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.

Journal: :Chemical communications 2005
Heather R Luckarift Lloyd J Nadeau Jim C Spain

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.

1999
S Gibson EL Ferguson

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...

Journal: :Dalton transactions 2013
Carl Redshaw Oliver Rowe David L Hughes Anna-Marie Fuller Ilich A Ibarra Simon M Humphrey

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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