نتایج جستجو برای: 311 g

تعداد نتایج: 445730  

پایان نامه :دانشگاه تربیت معلم - سبزوار - پژوهشکده علوم 1393

ابتدا ترکیب وانادیل استیل استونات [vo (acac)2] تهیه شد. سپس محاسبه های بهینه سازی ساختار و فرکانس های ارتعاشی آن به کمک روش نظریه تابعی چگالی در سطح b3lyp/ 6-311++g** انجام شد. مشتق های دیگر این ترکیب که با جایگزینی لیگاندهایی همانندb;cf3 f;ph g;t-but بدست آمدند که به وسیله روش مذکور و در همان سطح و تابع پایه مورد محاسبه قرار گرفتند. نتیجه محاسبه های [vo (acac)2] با مشتق های دیگر این ترکیب مقای...

Journal: :Ukrainian Journal of Physics 2022

???????i? ??i??i??????? ?? ??i???i????? ???? ???i?? ? ?????????? ???? ????i????? ???????? ?????i?????? ???????????i? ???????? ?i?i????? ???????????. ??????i?? i???????????? ?i?????? ??? ?????i ?????????i????? ?????????? (IEF-PCM) ?????????? ?????? ?????????? ???????????????? ?? ?i??i ????i? B3LYP/6-311++G(d,p). ??????i ??’???? ?i? ????????? ????????? ????i? ? ????????? (AIM) i ????????????? ???...

2012
Alan Gunn Sarah J. Pitt

The forensic potential of microorganisms is becoming increasingly apparent as a consequence of advances in molecular sciences and genomics. This review discusses instances in which microbes, and in particular bacteria, can impact upon forensic investigations. There is increasing evidence that humans have an extremely diverse ‘microbiome’ that may prove useful in determining ethnicity, country o...

2013
Bernard Bauduceau Jean Doucet Jean-Pierre Le Floch

RESEARCH DESIGN AND METHODS GERODIAB is the first French multicenter, prospective, observational survey designed to analyze the influence of glycemic control on morbidity/mortality in type 2 diabetic patients aged ‡70 years during a 5-year follow-up period. This study analyzed the relationships between classical macroangiopathic complications and geriatric scale scores in 987 patients at baseli...

Journal: :journal of the iranian chemical research 0
ewa d. raczyńska department of chemistry, warsaw university of life sciences (sggw), 02-776 warszawa, poland małgorzata hallmann department of chemistry, warsaw university of life sciences (sggw), 02-776 warszawa, poland kinga duczmal department of chemistry, warsaw university of life sciences (sggw), 02-776 warszawa, poland

amide-iminol tautomerism was studied for ionized oxamic acid (oa+•) in the gas phase using thedft method with the ub3lyp functional and various basis sets {6-31++g(d,p), 6-311+g(d,p), and augcc-pvdz}. among twenty tautomers-rotamers possible for oa+•, eleven isomers were found to bethermodynamically stable. similarly as for the neutral molecule, ionization (oa → oa+• + e) favors theamidization ...

Journal: :Journal of King Saud University - Science 2021

The (5?,6?)-7,8-didehydro-4,5-epoxy-17-methylmorphinan-3,6-diol (morphine)molecule has been studied using the density functional theory and molecular docking methods non covalent interactions. conformational analysis of molecule at B3LYP/6?311++G** HF/6?311++G** levels made. comparison structural parameters computed B3LYP function with experimental data revealed their good agreement. weak inter...

Journal: :journal of the iranian chemical research 0
ewa daniela raczyńska department of chemistry, warsaw university of life sciences, 02-776 warszawa, poland malgorzta hallmann department of chemistry, warsaw university of life sciences, 02-776 warszawa, poland kinga duczmal department of chemistry, warsaw university of life sciences, 02-776 warszawa, poland

keto-enol tautomerism was investigated for ionized pyruvic acid using the dft(b3lyp) method and the larger basis sets [6-31++g(d,p), 6-311++g(3df, 3pd) and aug-cc-pvdz]. change of the tautomeric preference was observed when going from the neutral to ionized tautomeric mixture. ionization favors the enolization process (ketoenol) of pyruvic acid, whereas the ketonization (ketoenol) is preferred ...

Journal: :The Biochemical journal 1964
F G Winder C O'Hara

Gray, G. M. & Macfarlane, M. G. (1961). Biochem. J. 81, 480. Hanes, C. S. & Isherwood, F. A. (1949). Nature, Lond., 164, 1107. Hirsch, J. & Ahrens, E. H. (1958). J. biol. Chem. 233, 311. Igarashi, H., Zama, K. & Katada, M. (1958). Nature, Lond., 181, 1282. Kittredge, J. S., Roberts, E. & Simonsen, D. G. (1962). Biochemi8try, 1, 624. Lea, C. H. & Rhodes, D. N. (1953). Biochem. J. 54, 467. Marine...

Journal: :The Biochemical journal 1956
H BLASCHKO D B HOPE

Grant, J. K. (1952). Biochem. J. 51, 358. Grant, J. K. & Marrian, G. F. (1950). Biochem. J. 47, 497. Marker, R. E., Kamm, 0. & McGrew, R. D. (1937). J. Amer. chem. Soc. 59, 616. Marrian, G. F. (1954). In La Fonction Lut&&le (Publication des Colloques sur la Fonction Lut6ale: April 1954). Paris: Masson et Cie. Riegel, B., Hartop, W. L. jun. & Kittinger, G. W. (1950). Endocrinology, 47, 311. Somm...

1999
Yuji Takahata Delano P. Chong

Afinidades eletrônicas de doze moléculas pequenas foram calculadas pela teoria de funcional de densidade empregando dois funcionais diferentes(B88-P86 e B3LYP) combinados com três conjuntos de bases diferentes(6-31++G**, 6-311++G** e aug-cc-pVTZ). O método de função de Green para camada na valência exterior também foi empregado para os cálculos de afinidades eletrônicas das moléculas. Duas melh...

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