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Search Results: 1 - 10 of 7537 matches for " Muhammad Shahid Ramzan "
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STEAMEST: A Software Tool for Estimation of Physical Properties of Water and Steam
Muhammad Faheem,Naveed Ramzan,Shahid Naveed
Journal of Software , 2009, DOI: 10.4304/jsw.4.3.226-231
Abstract: A software tool, STEAMEST, has been developed for estimation of properties of water and steam for industrial applications using IAPWS-IF97 industrial formulation and subsequent updates. STEAMEST meets the precision and consistency standards of the International Association for the Properties of Water and Steam (IAPWS) as verified by 8 byte real values for all variables. It achieves maximum conformity (a tolerance of 1 part per billion) with “Basic Equations” of IAPWS-IF97 through use of iterative procedures instead of approximate “Backward Equations”, where recommended “Basic Equations” are not available. The code has been written in highly flexible Microsoft .NET framework using an object-oriented approach to ensure portability and modularity in software design without making any compromise on performance. Given valid input(s), STEAMEST can predict more than 15 properties of water/steam with a user-selected precision. It includes integrated software for unit conversion. Thermodynamic plots created by STEAMEST have the provision of zooming a specified portion. STEAMEST can compete with similar software both in terms of performance and reliability. Thus it has the potential to become a valuable tool for industry and academia.
Ni(II) REMOVAL BY BIOSORPTION USING FICUS RELIGIOSA (PEEPAL) LEAVES
ZAHEER ASLAM,MUHAMMAD; RAMZAN,NAVEED; NAVEED,SHAHID; FEROZE,NADEEM;
Journal of the Chilean Chemical Society , 2010, DOI: 10.4067/S0717-97072010000100019
Abstract: the pollutant binding capacity of acid treated ficus religiosa (peepal) leaves was investigated in a batch system under varying conditions. the results indicate that sorption equihbrium was established in about 60 minutes with equilibrium capacity of 6.35 ± 0.54mg/g. the ni(ii) sorption is highly dependent on ph and maximum removal was observed at ph 7 above which metal started to precipitate. it was also observed that sorption of ni(ii) decreases with increase in temperature. the experimental results were analyzed in terms of langmuir and freundlich isotherms. the freundlich isotherm model fitted well to data with 0.94 regression co-efficient (r2). evaluation of experimental data in terms of biosorption kinetics showed that the biosorption of nickel (ii) on biomass followed pseudo-second order kinetics. the results showed that biosorbent is an attractive low cost altemative for the treatment of wastewaters containing lower concentrations of nickel.
5-Chloro-N-(4,5-dihydro-1H-imidazol-2-yl)-2,1,3-benzothiadiazol-4-amine (tizanidine)
Peter John,Islam Ullah Khan,Mehmet Akkurt,Muhammad Shahid Ramzan
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811008348
Abstract: There are two independent molecules (A and B) with similar conformations in the asymmetric unit of the title compound, C9H8ClN5S. The benzothiadiazole ring systems of both molecules are essentially planar [maximum deviation = 0.021 (2) in molecule A and 0.022 (1) in molecule B] and make dihedral angles of 68.78 (9) and 54.39 (8)°, respectively, with the mean planes of their 4,5-dihydro-1H-imidazole rings. An intramolecular N—H...Cl hydrogen bond occurs in molecule B. In the crystal, both molecules form centrosymmetric dimers through π-stacking of their benzothiadiazole rings, with interplanar distances of 3.3174 (7) and 3.2943 (6) . These dimers are further linked via pairs of N—H...N hydrogen bonds with the dihydroimidazole rings as the hydrogen-bonding donors and one of the benzothiadiazole N atoms as the acceptors, generating R22(16) ring motifs. The A2 and B2 dimers in turn form additional N—H...N hydrogen bonds with the secondary amine as the H-atom donor and the dihydroimidazole N atom as the acceptor. These R22(8)-type interactions connect the A2 and B2 dimers with each other, forming infinite chains along [1overline{1}1].
Ni(II) REMOVAL BY BIOSORPTION USING FICUS RELIGIOSA (PEEPAL) LEAVES
MUHAMMAD ZAHEER ASLAM,NAVEED RAMZAN,SHAHID NAVEED,NADEEM FEROZE
Journal of the Chilean Chemical Society , 2010,
Abstract: The pollutant binding capacity of acid treated Ficus Religiosa (Peepal) leaves was investigated in a batch system under varying conditions. The results indicate that sorption equihbrium was established in about 60 minutes with equilibrium capacity of 6.35 ± 0.54mg/g. The Ni(II) sorption is highly dependent on pH and maximum removal was observed at pH 7 above which metal started to precipitate. It was also observed that sorption of Ni(II) decreases with increase in temperature. The experimental results were analyzed in terms of Langmuir and Freundlich isotherms. The Freundlich isotherm model fitted well to data with 0.94 regression co-efficient (R2). Evaluation of experimental data in terms of biosorption kinetics showed that the biosorption of nickel (II) on biomass followed pseudo-second order kinetics. The results showed that biosorbent is an attractive low cost altemative for the treatment of wastewaters containing lower concentrations of Nickel.
Synthesis, characterization and antimicrobial activities of organotin(IV) complexes with ethylthioglycolate
Naeema Kousar, Saqib Ali, Saira Shahzadi, Lala Rukh, Sadaf Ramzan, Muhammad Shahid, Saroj K. Sharma, Kushal Qanungo
Chemistry Internatioanl , 2015,
Abstract: A series of organotin(IV) complexes have been synthesized by reacting ethylthioglycolate with di- and triorganotin halides in 1:1 M/L ratio in methanol under stirring conditions. The newly synthesized complexes have been characterized by elemental analysis, IR and NMR spectroscopy (1H, 13C). IR results shows that ligand act as monodentate which is also confirmed by semi-empirical study. NMR data reveals four coordinated geometry in solution. Biological activities data demonstrates that complexes show significant activity against various bacterial and fungal strains with few exceptions and are found cidal in their biological action.
Immature rat seminal vesicles show histomorphological and ultrastructural alterations following treatment with kisspeptin-10
Faiqah Ramzan, Irfan Qureshi, Muhammad Ramzan, Muhammad Ramzan, Faiza Ramzan
Reproductive Biology and Endocrinology , 2012, DOI: 10.1186/1477-7827-10-18
Abstract: Prepubertal laboratory rats were injected kisspeptin-10 at three different dosage concentrations (10 pg, 1 ng and 1 microgram) for a period of continuous 12 days at the rate of two doses per day. Control rats were maintained in parallel. The day following the end of the experimental period, seminal vesicles were removed and processed for light and electron microscopic examination using the standard methods. DNA damage was estimated by DNA ladder assay and DNA fragmentation assay.The results demonstrated cellular degeneration. Epithelial cell height of seminal vesicles decreased significantly at all doses (P < 0.05). Marked decrease in epithelial folds was readily noticeable, while the lumen was dilated. Ultrastructural changes were characterized by dilatation of endoplasmic reticulum and Golgi complex, heterochromatization of nuclei, invagination of nuclear membranes and a decreased number of secretory granules. Percent DNA damage to the seminal vesicle was 19.54 +/- 1.98, 38.06 +/- 2.09 and 58.18 +/- 2.59 at 10 pg, 1 ng and 1 microgram doses respectively.The study reveals that continuous administration of kisspeptin does not lead to an early maturation but instead severe degeneration of sexually immature seminal vesicles.In 1999, Lee and colleagues discovered in the rat a novel G protein-coupled receptor, the GPR54. The GPR54 gene encodes a G protein-coupled receptor [1]. It was later shown to mediate the actions of a unique family of KiSS-1 derived endogenous ligands known as kisspeptins. The KiSS-1 gene encodes a 145-amino acid peptide that is cleaved into an amidated C-terminal 54 amino acid product, kisspeptin or metastin. Shorter fragments of kisspeptin-54, the kisspeptin-14, kisspeptin-13, and kisspeptin-10, also bind to GPR54. Kisspeptin-54 was originally identified as metastasis suppresser peptide from malignant melanoma cells that had been suppressed for metastatic potential by the introduction of human chromosome 6, hence named metastin [2-4]. In 2003 two
Characterization of purified β-glucosidase produced from Trichoderma viride through bio-processing of orange peel waste  [PDF]
Muhammad Irshad, Zahid Anwar, Muhammad Ramzan, Zahed Mahmood, Haq Nawaz
Advances in Bioscience and Biotechnology (ABB) , 2013, DOI: 10.4236/abb.2013.410124
Abstract:

In the present study, solid state fermentation was carried out using orange peel waste to produce β-glucosidase from Trichoderma viride. A locally isolated fungal strain T. viride was cultured in the solid state medium of orange peel (50% w/w moisture) under optimized fermentation conditions and maximum activity of 515 ± 12.4 U/mL was recorded after 4th day of incubation at pH 5.5 and 30℃. Indigenously produced β-glucosidase was subjected to the ammonium sulfate precipitation and Sephadex-G-100 gel filtration chromatography. In comparison to the crude extract β-glucosidase was 5.1-

The m-Point Quaternary Approximating Subdivision Schemes  [PDF]
Shahid S. Siddiqi, Muhammad Younis
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.31A002
Abstract:

In this article, the objective is to introduce an algorithm to produce the quaternary m-point (for any integer m>1) approximating subdivision schemes, which have smaller support and higher smoothness, comparing to binary and ternary schemes. The proposed algorithm has been derived from uniform B-spline basis function using the Cox-de Boor recursion formula. In order to determine the convergence and smoothness of the proposed schemes, the Laurent polynomial method has been used.

Nutritional Status of Affluent School Children of Dera Ismail Khan: Is under Nutrition Common?
Muhammad Ramzan,Irshad Ali,Faiqah Ramzan,Faiza Ramzan
Pakistan Journal of Nutrition , 2010,
Abstract: The present study assesses the frequency of underweight in primary school children from families of high socioeconomic status in Dera Ismail Khan City, Pakistan. It included 322 children, 221 (68.63%) boys and 101 (31.37%) girls. The schools such as The Qurtruba, The City and The Educators were selected as they are the only institutions that cater wards of high socio economic group in Dera Ismail Khan. They were living in healthy environments, have excellent nutrition and easy access to health facilities. Thorough medical examination excluded those suffering from chronic health ailments. Height and weight of each child was taken. BMI was calculated according to the Quatelet’s Index and body mass status according to WHO S′ criteria. The BMI-for-age percentile was derived by putting BMI values on gender specific CDC S′ growth charts 2-20 years. Children falling below 5th percentile were declared as under weight and those >95th percentile as obese. Frequency of under weight in primary school children was found 5.59% (in sample): 4.03% for boys and 1.55% for girls. Boys were more than two times under weight than girls. This may be due to absence of gender discrimination; easy access of girls to kitchen and food stored in the house. It also reflects the changing attitude of these families about the status of women; improvement in the level of education, economics and knowledge about nutrition.
Exploitation of Concatenated Olive Plastome DNA Markers for Reliable Varietal Identification for On-Farm Genetic Resource Conservation  [PDF]
Muhammad Noman, Wajya Ajmal, Muhammad Ramzan Khan, Armghan Shahzad, Ghulam Muhammad Ali
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.619299
Abstract: Rapid and reliable identification of olive plants using DNA markers has been attempted in the past but the selection of polymorphic regions for discrimination at varietal level remained obscure. Recent sequencing of plastid genome of the olive flaunts high resolution Cp markers for olive DNA fingerprinting. Using this information, we designed a combination of chloroplast markers to amplify genes recruited in photosynthesis, ribosomal and NADH energy metabolism for varietal identification of olive plants. Concatenated DNA sequences of more than 100 unknown and 10 reference plants samples were analyzed using various bioinformatics and phylogenetic tools. Conserved blocks of nucleotide sequences were detected in multiple alignments. Phylogenetic reconstruction differentiated the unknown plants into various clusters with known varieties. Further narrowing down of the samples through UPGMA tree clearly separated the plants into Arbosana, Frantoio and Koroneiki as the major varieties. Multiple alignments of these clusters revealed important variety specific SNPs including G and T nucleotides at specific positions. Sequence identifying at intra cultivar level was more than 98.79% while it dropped to 97%, and even to 96% at inter varietal level. Furthermore, a neighbor net network analysis separated these three clusters, thus validating the results of UPGMA tree. Over all, out of 100 plants samples, 49 plants were identified that fall into 10 varieties including Arbosana, Carolea, Chetoui, Coratina, Domat, Frantoio, Gemlik, Koroneiki,Leccino and Moraiolo. The maximum number of known plants belongs to Frantoio and Gemlik (8 each). The least number of samples was identified from Carolea, Domat and Moraiolo with 2 samples each. However, 51 plants could not be identified, as plants were not clustered with any of reference control. Our results have implications in on-farm conservation of olive germplasm and provision of genuine material for multiplication of authentic varieties. This strategy can be extended to varietal identification of other plant species.
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