مرور Volume 1, Issue 4 بر اساس عنوان
در حال نمایش موارد 1 - 11 از 11
-
BAYES ESTIMATION USING A LINEX LOSS FUNCTION
(University of Tehran, 1990-08-01)This paper considers estimation of normal mean ? when the variance is unknown, using the LINEX loss function. The unique Bayes estimate of ? is obtained when the precision parameter has an Inverse Gaussian prior density
-
A CHARACTERIZATION OF EXTREMELY AMENABLE SEMIGROUPS
(University of Tehran, 1990-08-01)Let S be a discrete semigroup, m (S) the space of all bounded real functions on S with the usualsupremum norm. Let Acm (S) be a uniformly closed left invariant subalgebra of m (S) with 1 c A. We say that A is extremely ...
-
DEUTERIUM STUDIES IN THE DISPROPORTIONATION OF THIOXANTHYLIUM SALTS
(University of Tehran, 1990-08-01)Deuterium labelling is used to show that the disproportionation of thioxanthylium salts involve transfer of a hydride, (deuteride) ion from the9-positionof one molecule of the compound, as its hydro], to the 9 - position ...
-
DIFFERENT TYPES OF ROCKBALLS AND THEIR GENESIS FROM THE KARAJ FORMATION (MIDDLE EOCENE) IN CENTRAL ALBORZ, OF NORTHERN IRAN
(University of Tehran, 1990-08-01)
-
THE INFLUENCE OF CHARGE DENSITY ON THE INTERACTION BETWEEN SODIUM NDUDECYL SULPHATE (SDS) WITH H1
(University of Tehran, 1990-08-01)The binding data for the interaction of SDS with HI, in aqueous solution at various ionic strengths have been measured by equlibrium dialysis, and investigated spectroscapicaliy. The effect of charge density on the ...
-
THE POMERON IN A MODIFIED MU LTIPERIPHERAL MODEL
(University of Tehran, 1990-08-01)There have been many attempts [I-31 to produce correct pomeron by putting the nparticle production amplitude expht, in the unitarity integral equation. It was found that for reasonable values of h one could not get the ...
-
A QUANTUM CHEMICAL STUDY OF STRUCTURE -ACTIVITY RELATIONSHIPS OF DIHYDROPYRIDINE CALCIUM ANTAGONISTS
(University of Tehran, 1990-08-01)Quantum chemical (MNDo)caleulations have beenused toelucidate the molecular properties and structure - activity relationships of dihydropyridine (DHP) type calcium antagonists. There is a good corielation between the net ...
-
REACTION OF TRIMETHYLCHLOROSILANE WITH EPOXYKETONES IN THE PRESENCE OF MAGNESIUM
(University of Tehran, 1990-08-01)Mixture of the trimethylchlorosilane, magnesium and hexamethylphosphorictriamid, HMPT, react with epoxyketones to produce tetrasiliciated compounds, which are the results of the addition of two trimethylsilyl (TMS) groups ...
-
SELENIUM HETEROCYCLES XXXX [I] SYNTHESES OF 4- (2-PYRAZINYL) - 1, 2, 3: SELENADIAZOLE AND 4- (2-PYRAZILYL)' - l,2,3- THIADIAZOLE
(University of Tehran, 1990-08-01)Reaction of thionyl chloride with 2-acetyl-1- benzenesulfonylpyrrole semicarbazone (6 c) gave 4 - (1- benzenesulfonyl-2 - pyrrolyl) - 1, 2, 3 -thiadiazole (lc). Selenium dioxide oxidation of 2-acetylpyrazine semicarbazone ...
-
SPECTROPHOTOMETRIC DETERMI NATION OF OSMIUM (VIII) WITH 1-HYDROXY 2- PYRIDINE - THIONE (SODIUM SALT) AS A REAGENT
(University of Tehran, 1990-08-01)A spectrophotometric study of osmium (VIII) complex of 1-hydroxy 2- pyridine thione (HPT) is presented. A red-violet complex, 0 s (HPT) is formed in a highly acidic solution, and shows maximum absorbance at 500 nm with ...
-
THE SYNTHESES OF 1- [[2- AMINO -1 - (HYDROXYMETHYL) ETHOXY] METHYL] URACIL AND 1, 3-BIS (2- HALOETHOXYMETHYL) PYRIMIDINE
(University of Tehran, 1990-08-01)The syntheses of the title compounds are described. 1- [[2- Amino -1 - (hydroxymethyl) ethoxy] methyl] uracil exhibitslittleactivity against herpesviruses (HSV) in vivo



