نتایج جستجو برای: Penicillin amine

تعداد نتایج: 40059  

Journal: :physical chemistry and electrochemistry 0
davood kaviani young researchers and elite club, east tehran branch, islamic azad university, tehran, iran majid saghi department of chemistry, faculty of science, arak branch, islamic azad university, arak, iran maryam agha mohammadi department of chemistry, faculty of science, arak branch, islamic azad university, arak, iran mohammad hosein bigtan department of chemistry, faculty of science, arak branch, islamic azad university, arak, iran

the studies performed about electrochemical oxidation 2-amino-4-methylphenol indicate that ortho-quinone yielded through oxidation of this chemical compound was unstable and it could be used as michael acceptor under solvent influences, carrier electrolyte, additives and could be transformed into the various compounds in the form of 1-4 addition michael reaction. based on this, in the paper fir...

Davood Kaviani Majid Saghi Maryam Agha Mohammadi Mohammad Hosein Bigtan

The studies performed about electrochemical oxidation 2-amino-4-methylphenol indicate that ortho-quinone yielded through oxidation of this chemical compound was unstable and it could be used as Michael acceptor under solvent influences, carrier electrolyte, additives and could be transformed into the various compounds in the form of 1-4 addition Michael reaction. Based on this, in the paper fir...

Journal: :European journal of biochemistry 2004
Maya Guncheva Ivaylo Ivanov Boris Galunsky Nicolina Stambolieva Jose Kaneti

Kinetic experiments with a substrate series of phenylacetyl-arylamides reveal that at least one polar group in the amine moiety is required for the proper orientation of the substrate in the large nucleophile-binding subsite of penicillin acylase of Escherichia coli. Quantum mechanical molecular modelling of enzyme-substrate interactions in the enzyme active site shows that in the case of subst...

Journal: :Journal of Biotechnology 2021

Trypsin, chymotrypsin, penicillin G acylase and ficin extract have been stabilized by immobilization on glyoxyl agarose, adding different aliphatic compounds bearing a primary amine group during the immobilization: ethyl amine, butyl hexyl (at concentrations ranging from 0 to 20 mM) octyl (from 10 analyze their effects immobilized enzyme stability. As expected, presence of amines reduced intens...

Journal: :The Journal of biological chemistry 1945
M R STETTEN C L FOX

When Escherichia coli was grown in a synthetic medium containing salts, amino acids, and glucose in the presence of bacteriostatic concentrations of sulfonamides, an increase in total diasotizable amine was noted (1). This has nolv been found to be due to the production of a new heterocyclic amine, the nature of mhich may ultimately throIv light on the mechanism of sulfonamide bacteriost,asis. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1380

در این بررسی دو سری کمپلکس از کبالت ‏‎(iii)‎‏ به فرمول های کلی ‏‎(co(do)(doh)pn)(amine)cl][pf6:(amine=imazl,analin) , [co(salpn)(amine)2]x:(amine=pprdn, prldn,mrplin,imdzl),(x=bph4 , clo4) سنتز و با استفاده از آنالیز عنصری و روشهای طیف سنجی ‏‎h-nmr , ir , uv-vis‎‏ شناسایی گردیده است. به علت حساسیت ترکیبات با لیگاندهای چهار دندانه ای به آب برای سنتز آنها تمهیدات خاصی به کار برده شده است. تا بتوا...

Journal: :medical journal of islamic republic of iran 0
mohammad reza sabri from the cardiology units, pediatric department, nemazee hospital, shiraz, l.r.lran. mohammad rahim kadivar from the lnfectious disease units, pediatric department, nemazee hospital, shiraz, l.r.lran mohammad borzouee from the cardiology units, pediatric department, nemazee hospital, shiraz, l.r.lran.

the most accepted method of secondary prophylaxis in rheumatic fever (rf) has been an injection of 1,200,000 units of benzathine penicillin g (bpg) every 4 weeks, but recurrences have been reported in some patients despite such a prophylaxis program. the who recommended bpg injections every 3 weeks in high risk patients and situations due to some published data in favor of inadequacy of once ev...

2014
Bei Cheng Bindu Thapa Peisheng Xu

Materials: Glycol chitosan (GCS, Mw = 200 kDa; degree of deacetylation = 90%), potassium persulfate, sodium borohydride, succinic anhydride, melittin from bee venom, sodium dodecyl sulfate, D-(+)-trehalose dehydrate, N-succinimidyl 3-[2-pyridyldithio]-propionate (SPDP), tris(2carboxyethyl)phosphine (TCEP), triethlyl amine (TEA), ethylenediaminetetraacetic acid (EDTA), and dimethyl sulfoxide (DM...

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