نتایج جستجو برای: salt assisted acids

تعداد نتایج: 467448  

Journal: :Nanoscale 2015
Jaya Pal Mainak Ganguly Chanchal Mondal Yuichi Negishi Tarasankar Pal

This paper describes an effective method for a precursor salt assisted fabrication and reshaping of two different polyoxometalates [(NH4)2Cu(MoO4)2 (ACM) and Cu3(MoO4)2(OH)2 (CMOH)] into five distinctive shapes through straightforward and indirect routes. Explicit regulation of the structural arrangements of ACM and CMOH has been studied in detail with altered precursor salt concentration emplo...

Journal: :Molecules 2004
László Boros Károly Felföldi István Pálinkó

The potassium salt of E- and Z-2,3-diphenylpropenoic acids prepared in situ could be esterified efficiently in DMSO with the appropriate alkyl halides at room temperature. In this way 10 previously undescribed esters of these acids were synthesised and characterised. Excellent yields were observed for most of the E isomers and the more hindered Z esters were also obtained in good yields, far be...

Journal: :The West Indian medical journal 2009
V B Sampson T Alleyne D Ashe

A deficiency of cytochrome c oxidase (COX) is associated with a number of diseases but details of the enzyme's mechanism of action especially the interaction with its substrate, ferrocytochrome c, remain unclear. It is known that the transfer of electrons from ferrocytochrome c to COX is facilitated by the formation of enzyme-substrate (ES) complexes which are stabilized by intermolecular salt ...

2004
André Dias de Azevedo Neto José Tarquinio Prisco Joaquim Enéas-Filho Claudivan Feitosa de Lacerda José Vieira Silva Paulo Henrique Alves da Costa Enéas Gomes-Filho

Seeds from eight different maize genotypes (BR3123, BR5004, BR5011, BR5026, BR5033, CMS50, D766 and ICI8447) were sown in vermiculite, and after germination they were transplanted into nutrient solution or nutrient solution containing 100 mmol.L-1 of NaCl and placed in a greenhouse. During the experimental period plant growth (dry matter, shoot to root dry mass ratio, leaf area, relative growth...

Journal: :Chemical communications 2015
Eva Jürgens Barbara Wucher Frank Rominger Karl W Törnroos Doris Kunz

An efficient Rh(I)-NHC-pincer catalyst for the highly regioselective Meinwald rearrangement of monoalkylated epoxides into methylketones under mild conditions is presented. The nucleophilic epoxide opening is assisted by Lewis acids.

Journal: :Biochemistry 2000
J P Tam Y A Lu J L Yang

Cyclic peptide backbone and cystine constraints were used to develop a broadly active salt-insensitive antimicrobial peptide [Gly(6)]ccTP 1a with eight Gly residues in an 18-residue sequence. The importance of rigidity and amphipathicity imparted by the cyclic and cystine constraints was examined in two peptide series based on tachyplesin, a known beta-stranded antimicrobial peptide. The first ...

1999
OSAMU ITO RICHARD J. ROMAN

Ito, Osamu, and Richard J. Roman. Regulation of P-450 4A activity in the glomerulus of the rat. Am. J. Physiol. 276 (Regulatory Integrative Comp. Physiol. 45): R1749–R1757, 1999.—We recently reported that an enzyme of the cytochrome P-450 4A family is expressed in the glomerulus, but there is no evidence that 20-hydroxyeicosatetraenoic acid (20-HETE) can be produced by this tissue. The purpose ...

Journal: :Ultrasonics sonochemistry 2012
Cristiane B Hobuss Dalila Venzke Bruna S Pacheco Alexander O Souza Marco A Z Santos Sidnei Moura Frank H Quina Karina G Fiametti J Vladimir Oliveira Claudio M P Pereira

This work describes the ultrasound-assisted synthesis of saturated aliphatic esters from synthetic aliphatic acids and either methanol or ethanol. The products were isolated in good yields after short reaction times under mild conditions.

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