The main goal of the research is a diagnostic assessment polluted water leaks from chemical waste landfill site using self-potential method integrated with other methods. following tasks were to be solved: locating zones contaminated leakage drainage canals; detecting sludge reservoir; identifying discharge groundwater into swamps adjacent landfill. Electrical prospecting equipment ERA-MAX non-...

A virB-lacZ translational fusion was constructed to monitor expression of the Agrobacterium tumefaciens virB operon. Expression of the fusion gene was dependent on the presence of pTiA6 virA, virG, and a plant factor acetosyringone. Analysis of deletion mutants, constructed by exonuclease Bal31 digestion, showed that 68 residues upstream of the virB transcription initiation site was necessary f...

The virulence genes of Agrobacterium tumefaciens are induced by specific plant phenolic metabolites and sugars (G. A. Cangelosi, R. G. Ankenbauer, and E. W. Nester, Proc. Natl. Acad. Sci. USA, in press). In this report, monosaccharides, derivatives, and analogs which induce the vir regulon have been identified and the structural requirements for monosaccharide-mediated induction have been deter...

Agrobacterium tumefaciens transfers T-DNA into the plant genome by a process mediated by Ti plasmid-encoded vir genes. Cleavage at T-DNA border sequences by the VirD endonuclease generates linear, single-stranded T-DNA molecules. In the work described in this report, we used electrophoretic mobility shift assays to show that the purified virE2 gene product binds to single-stranded DNA. VirE2 pr...

Research subject. The high-sulfidation (HS-type) epithermal gold deposits of the Maletoyvayam ore field, which is located in volcanic belts Kamchatka Peninsula. Materials and methods. paper presents results geophysical petrophysical studies carried out by “NPP VIRG-Rudgeofizika” (2016–2017 years) central part field hosting HS-type deposits. Results. presented case study shows potential prospect...

وراثت مقاومت سفیدبالک گلخانه، Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae)، به دو ترکیب ایمیداکلوپرید و کلرپایریفوس مورد مطالعه قرار گرفت. در این پژوهش، از جمعیت فیلستان ورامین (FL) عنوان والد مقاوم فردیس کرج (FR) حساس استفاده شد. مقدار ترتیب حدودا 62/13 91/14 برابر بود. عدم وجود اختلاف معنی‌دار LC50 روی تلاقی‌های F1 (R♂×S♀) Fʹ1 (R♀×S♂) نشان داد که T. نوع اتوزومی (غیرجنسی) است. ه...