نتایج جستجو برای: boric acid 3 ppm b

تعداد نتایج: 3048600  

Journal: :The Plant cell 2006
Junpei Takano Motoko Wada Uwe Ludewig Gabriel Schaaf Nicolaus von Wirén Toru Fujiwara

Boron (B) is essential in plants but often present at low concentrations in the environment. To investigate how plants survive under conditions of B limitation, we conducted a transcriptome analysis and identified NIP5;1, a member of the major intrinsic protein family, as a gene upregulated in B-deficient roots of Arabidopsis thaliana. Promoter-beta-glucuronidase fusions indicated that NIP5;1 i...

We have reported the fabrication of boric acid incorporated into surface of magnetite nanoparticles. The catalyst was characterized using spectroscopic, magnetic and thermal techniques (FT-IR, SEM, XRD, ICP, VSM and TGA). It catalyzed Mukaiyama aldol reaction of a ketene silyl acetal type nucleophile ((1-methoxy-2-methylprop-1-enyloxy) trimethylsilane), and various aldehydes (aromatic, aliphati...

2013
Bruno A. Correia Bicho Christoph Bolli Carsten Jenne Helene Seeger

The title crystal structure is a new triclinic polymorph of [(Ph3P)2N]Cl·(B(OH)3) or C36H30NP2 (+)·Cl(-)·BH3O3. The crystal structure of the ortho-rhom-bic polymorph was reported by [Andrews et al. (1983 ▶). Acta Cryst. C39, 880-882]. In the crystal, the [(Ph3P)2N](+) cations have no significant contacts to the chloride ions nor to the boric acid mol-ecules. This is indicated by the P-N-P angle...

Journal: :Journal of hazardous materials 2009
Einstine Opiso Tsutomu Sato Tetsuro Yoneda

Pollution caused by boric acid and toxic anions such as As(V), Cr(VI) and Se(VI) is hazardous to human health and environment. The sorption characteristics of these environmentally significant ionic species on allophane-like nanoparticles were investigated in order to determine whether allophane can reduce their mobility in the subsurface environment at circum-neutral pH condition. Solutions co...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Junpei Takano Mayuki Tanaka Atsushi Toyoda Kyoko Miwa Koji Kasai Kentaro Fuji Hitoshi Onouchi Satoshi Naito Toru Fujiwara

Boron (B) is essential for plant growth but is toxic when present in excess. In the roots of Arabidopsis thaliana under B limitation, a boric acid channel, NIP5;1, and a boric acid/borate exporter, BOR1, are required for efficient B uptake and subsequent translocation into the xylem, respectively. However, under high-B conditions, BOR1 activity is repressed through endocytic degradation, presum...

Journal: :International Journal of Enviornment and Climate Change 2023

Physiologically mature, uniform fruits were thoroughly washed and dipped in aqueous solution of T0 (Untreated fruits), T1 (Boric acid at 200 ppm), T2 300 T3 (NAA 100 T4 T5 (Salicylic 300ppm), T6 400ppm) for five minutes. Fruits placed plastic trays stored ambient storage conditions 12 days. The readings observed after 4rd, 8th 12th Physiological weight loss decreased with storage, further treat...

Journal: :Journal of economic entomology 2004
Michael K Rust Donald A Reierson John H Klotz

Boric acid, imidacloprid, and thiamethoxam in sucrose aqueous baits had different delayed toxicities to worker Argentine ants, Linepithema humile (Mayr). The concentrations required to produce an LT50 (time required to produce 50% mortality) within 1-4 d were 3.63-0.55% boric acid, 9.2 x 10(-3) to 7.1 x 10(-4)% imidacloprid, and 3 x 10(-4) to 2 x 10(-5)% thiamethoxam. The three toxicants were n...

Journal: :The journal of physical chemistry. A 2008
M Elango V Subramanian Anuja P Rahalkar Shridhar R Gadre N Sathyamurthy

Cardinality guided molecular tailoring approach (CG-MTA) [Ganesh et al. J. Chem. Phys. 2006, 125, 104019] has been effectively employed to perform ab initio calculations for large molecular clusters of boric acid. It is evident from the results that boric acid forms nanotubes, structurally similar to carbon nanotubes, with the help of an extensive hydrogen-bonding (H-bonding) network. Planar ro...

Journal: :Journal of radiation research 2018
Eisuke Sato Alexander Zaboronok Tetsuya Yamamoto Kei Nakai Sergey Taskaev Olga Volkova Ludmila Mechetina Alexander Taranin Vladimir Kanygin Tomonori Isobe Bryan J Mathis Akira Matsumura

In the current article, we provide in vitro efficacy evaluation of a unique accelerator-based neutron source, constructed at the Budker Institute of Nuclear Physics (Novosibirsk, Russian Federation), for boron neutron capture therapy (BNCT), which is particularly effective in the case of invasive cancers. U251MG, CHO-K1 and V79 cells were incubated and irradiated in various concentrations of bo...

Journal: :Journal of clinical pathology 1990
P D Meers C K Chow

Boric acid has been used for over 20 years to preserve urine while in transit for bacteriological examination. It has been suggested that it may be toxic for some urinary pathogens. To investigate this several strains of bacteria and fungi commonly found in urine were exposed to different concentrations of boric acid in nutrient broth. Viable counts were made at the outset and at intervals for ...

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