نتایج جستجو برای: br2

تعداد نتایج: 493  

Journal: :Phyton-international Journal of Experimental Botany 2022

Brassinolide (BR) is a new green plant growth regulator. The present field study was conducted on two fragrant rice cultivars (i.e., Meixiangzhan-2 and Xiangyaxiangzhan) to the effects of foliar application BR performance. At heading stage, solutions at 0.05, 0.15, 0.25 0.50 mg L-1 were sprayed 600 liters per hectare; these treatments named as BR1, BR2, BR3 BR4, respectively. treatment with dis...

2016
R. S. BROWN

The electrophilic bromination of an alkene is probably the quintessential reaction of the double bond and is portrayed in undergraduate textbooks as being a wellunderstood process adhering to the generalized mechanism depicted in Scheme 1.1,2 For alkenes that do not form a highly stabilized â-bromocarbocation, the reaction invariably proceeds with the initial instantaneous formation of an olefi...

Journal: :Chemical communications 2003
M Carla Aragoni Massimiliano Arca Francesco A Devillanova Francesco Isaia Vito Lippolis Annalisa Mancini Luca Pala Alexandra M Z Slawin J Derek Woollins

The reaction of the neutral dithiolene [Pd(Et2timdt)2] (Et2timdt = formally monoreduced diethylimidazolidine-2,4,5-trithione) with an excess of Br2 yielded few crystals of [1(Et) x 2Br](2+)(Br-)2(Br2)3 as a by-product (1(Et) = 4,5,9,10-tetrathiocino-[1,2-b:5,6-b']-1,3,6,8-tetraethyl-diimidazolyl-2,7-dithione); X-ray diffraction analysis showed that this compound represents the first example of ...

Journal: :Journal of environmental sciences 2008
Naeem ud din Ahmad Haiying Xu Liping Chen Zhipei Liu Shuangjiang Lu

Nitrogen removal from synthetic wastewater was investigated in an airlift bioreactor (ALB), augmented with a novel heterotrophic nitrifier Pseudonocardia ammonioxydans H9T under organic carbon to nitrogen ratios (Corg/N) ranging from 0 to 12. Effect of the inoculated strain was also determined on the settling properties and the removal of chemical oxygen demand (COD). Two laboratory scale react...

Journal: :The Journal of biological chemistry 1991
J K Ritter J M Crawford I S Owens

We report the isolation and characterization of two human liver cDNA clones, HUG-Br1 and HUG-Br2; each encodes a UDP-glucuronosyltransferase enzyme which glucuronidates bilirubin IX alpha to form both the IX alpha C8 and IX alpha C12 monoconjugates and a diconjugate. HUG-Br1 cDNA (2351 base pairs) and HUG-Br2 cDNA (2368 base pairs) encode proteins with 533 and 534 amino acid residues, respectiv...

Journal: :Genetics and molecular research : GMR 2011
F H F Costa N S M S Valença A R B P Silva G A Bezerra B S Cavada G Rádis-Baptista

C-type lectins are animal proteins that contain at least one carbohydrate recognition domain (CRD) capable of mediating sugar and calcium binding. Carbohydrate recognition is directly required for some biological functions, including the innate immune response. We cloned two novel C-type lectin (CTL) precursors from the commercial marine shrimp Litopenaeus vannamei. The cloned cDNAs encompass O...

2015
Sushil Kumar Sharma D. D Agarwal

A facile, simplistic, highly efficient, environmentally safe, regioselective, controllable and economical method for the bromination of organic compounds using aqueous AlBr3-Br2 reagent system.

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2005
Ramesh C Sharma Hong-Yi Huang Wang-Ting Chuang King-Chuen Lin

The absorption cross-sections at room temperature are reported for the first time, of Br2 vapor in overlapping bound-free and bound-bound transition of A(3)pi1u <-- Xsigma(g)+, X(1)pi1u <-- X(1)sigma(g)+ and B(3)pi0u <-- X(1)sigma(g)+, using cavity ring down spectroscopy (CRDS) technique. We reported here, the A(3)pi1u <-- X(1)sigma(g)+, transition is included along with the two stronger X(1)pi...

Journal: :Cancer research 2004
Isabel López de Silanes Nieves Olmo Javier Turnay Gonzalo González de Buitrago Pablo Pérez-Ramos Ana Guzmán-Aránguez Marta García-Díez Emilio Lecona Myriam Gorospe M Antonia Lizarbe

Acquired resistance to apoptosis by tumor cells remains a major obstacle for cancer treatment, and hence the analysis of resistance to apoptosis constitutes a major goal in the development of antitumoral drugs. We have established a butyrate-resistant human colon adenocarcinoma cell line (BCS-TC2.BR2) from nontumorigenic BCS-TC2 cells to analyze whether the acquisition of such phenotype confers...

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