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Synthesis and Spectroscopic Studies ofAtenolol Derivatives with Enhanced Lipophilicity as Potential Prodrugs
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Qatar University
, 2002 , Article)
Atenolol, a selective pi-adrenoceptor blocking agent is characterized by its low bioavailability. A number of atenolol prodrugs were synthesized to improve its lipid solubility and hence bioavailability. These compounds ...
Qualitative Dealing with Quantified Assertions
(
Qatar University
, 2002 , Article)
In this paper we present a newapproach to a symbolic treatment ofquan-tified statements having the following form "Q A's are 5's", knowing that A and B are labels denoting sets,and Q is a linguistic quantifier interpreted ...
Corrosion of n-GaAs/aqueous Photoelectrochemical Cell
(
Qatar University
, 2005 , Article)
A combination of electrochemical studies, scanning electron microscopy, SEM, and light reflectivity measurements reveals information about the corrosion of enlightened n-GaAs in various aqueous electrolytes. The corrosion ...
Generation of Sets of Sequences lsomorphic to Walsh Sequences
(
Qatar University
, 2005 , Article)
Walsh sequences of the order 2k, k positive integer, form an additive group generated by Rademacher sequences set of ft-order. Except the zero sequence, Walsh sequences form an orthogonal set. Our present work allows us ...
Phospholipid Fatty Acids Compositions of Sponges from Qatar I- Haplosclerida
(
Qatar University
, 2006 , Article)
The phospholipid fatty acid contents of six Haplosclerida sponges collected along Qatari ;ts, Arabian Gulf, were identified by coupling GC-MS experiments. More than hundred of rated and unsaturated fatty acids have been ...
The Flora of The State of Qatar: Its History and Present-Day Status
(
Qatar University
, 2005 , Article)
The history of botanical exploration in the State of Qatar is of recent origin. Various collections culminated in 2 major Floras for the State of Qatar in 1981 and 1983. Since then, further collections and focus on several ...
Viscous Behavior of Dilute CMC Salt Solution Before and After Photodegradation
(
Qatar University
, 2006 , Article)
Photodegradation curve of carboxymethylcellulose (CMC) in aqueous solution has been reported. Densities and solution viscosities of very dilute CMC salt solution before and after UV-irradiation have been measured. ...
Formation of Usual and Bridging Complexes using organoselenium and -Tellurium compounds
(
Qatar University
, 2005 , Article)
The reactions of l,3-benzoselenadiazole with some diiodo selenium and tellurium heterocyclic compounds have led to the formation of charge transfer complexes. From the same reactions but in the presence of I9PtC14 new types ...
Occurence of Phytoplankton in Stomach Content and Its Selectivity by Nile Tilapia (Oreochromis niloticus L.) Cultured in Fertilized Earthen Ponds
(
Qatar University
, 2003 , Article)
Nile tilapia (Oreochromis niloticus L.) was cultured in earthen ponds receiving 0, 20, 40, 60 and 100 kg/feddan/month of inorganic fertilizer (20:20:5 N:P:K). The obtained results showed that the composition percentage of ...
Microwave Spectra of 13CH3C15N and 13CH3 13C 15N Molecules In the Frequency Range 17-95 GHz
(
Qatar University
, 2002 , Article)
Some microwave frequencies of the v^ + Vg vibrational combination band for the two isotopes CH^C N and CH^ C N of methyl cyanide were measured in the frequency range 17-95 GHz, for the transitions AJ = 1<-0, AJ = 2<-1, AJ ...