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Search Results: 1 - 10 of 374 matches for " Razia Aman "
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Green and Efficient Oxidation of Octanol by Iron Oxide Nanoparticles Supported on Activated Carbon  [PDF]
Mohammad Sadiq, Razia Aman, Saddam Hussain, Muhammad Abid Zia, Najeeb Ur Rahman, Mohammad Saeed
Modern Research in Catalysis (MRC) , 2015, DOI: 10.4236/mrc.2015.41004
Abstract: Iron oxide nanoparticles were synthesized by precipitation method and supported on activated carbon. The catalyst thus obtained was characterized by various physicochemical techniques, and used for the liquid phase dehydrogenation/oxidation of octanol in a batch reactor at various temperatures in the range 30 °C - 60 °C. Maximum conversion of octanol to octanal was attained at 60°;C in 30 min. However, with longer reaction time, the selectivity of the catalyst was found to change in favor of octene as a product. The catalyst could be recovered and reused multiple times without any decline in its catalytic performance.
Green and Sustainable Heterogeneous Organo-Catalyst for Asymmetric Aldol Reactions  [PDF]
Mohammad Sadiq, Razia Aman, Khalid Saeed, M. Sohail Ahmad, M. Abid Zia
Modern Research in Catalysis (MRC) , 2015, DOI: 10.4236/mrc.2015.42006
Abstract: Linear amino acids covalently supported on graphene sheet were employed as catalysts for asymmetric aldol reactions between cyclohexanone and aldehydes (aliphatic and/or aromatic) in a batch type reactor in the presence of water. The reactions were found to exhibit high yield as well as excellent ee value. Additionally, the catalysts were found to be truly heterogeneous and eco-friendly.
Prevailing Somatotypes and Their Contribution Rate to the Coordination Abilities among the Students of the Physical Education College  [PDF]
Aman Khasawneh
Advances in Physical Education (APE) , 2015, DOI: 10.4236/ape.2015.53022
Abstract: This study aimed at identifying the prevailing somatotypes among students according to academic year for males and females, as well as the differences among the frequencies of those prevailing somatotypes. It also aimed at identifying the contribution rates for the somatotype components to the coordinate abilities. A sample of 286 students were chosen, 176 males and 110 females, from the students at the College of Physical Education and Sport Sciences, using stratified random sample method. The results indicated that the Mesomorphic Endomorph somatotype was the prevailing one among males, whereas the Balanced Endomorph somatotype was the prevailing one among females. The results also indicated the existence of differences in the frequencies of somatotypes represented by the prevalence of the Mesomorphic Endomorph somatotype and its difference from the rest somatotypes for both males and females. The study revealed also that the Endomorph somatotype contributed effectively to constant balance and agility among males, whereas the Mesomorph and Ectomorph somatotypes contributed effectively to dynamic balance and agility among females. The researcher recommended the necessity for considering somatotypes when selecting students, who had the Mesomorph somatotype or the Mesomorph and Ectomorph one. He also recommended the necessity of benefiting from this study’s results through informing those concerned to have their mechanism and take the required procedures in order to limit the spread of the Endomorph somatotype among students and improve the Mesomorph through certain training programs.
Fungi associated with wheat seed discolouration and abnormalities in in-vitro study  [PDF]
Neha Pathak, Razia. K. Zaidi
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.49069

The main aim of present study is to ascertain the fungal species and their effect on germination associated with wheat seeds. Seeds of three varieties WH896, PBW-373 and HD264 of wheat (Triticum aestivum) were collected from Quarsi Agriculture Farm Aligarh. These three seed samples of wheat showing different forms of discouloration and abnormalities were screened for associated fungi. Microscopic examination of wheat seeds reveals that seeds of all the varieties of wheat possess injuries to varying extent. Detailed examination of the seeds has shown that the seeds can be classified on the basis of extent of injury in the three categories viz., seeds having minor cracks, cracks without exposed embryo and cracks with exposed embryo. Seed soaking and washing techniques were also employed. Fusarium moniliforme and Alternaria alternata were isolated from all the categories of seed tested. Floating mycelial bits and conidia of Alternaria, Fusarium, Drechslera, Curvularia lunata, Mucor were found in all the three varieties of wheat. The seeds were subjected to visual observation and examination under stereoscopic microscope. These findings are to study and detect the phytopathogenic mycoflora which causes damage and loss to our seeds and crops.

Method of Crack Formation Analysis Based on Mechanoluminecence  [PDF]
Sergej Aman, Alexander Aman, Juergen Tomas
Materials Sciences and Applications (MSA) , 2012, DOI: 10.4236/msa.2012.310108
Abstract: This paper presents the method of monitoring of cracks formation based on analysis of light impulses that appear during the cracks formation. The light impulses appear simultaneously in the ultraviolet (UV) and near-infrared (NIR) wave-length ranges. However, during the plastic deformation, where the building of micro cracks with narrow width is dominant, the light appears frequently in the UV-wavelength range. With the cracks growth the width become wide-ranging and the spectrum of light shifts to the NIR-wavelength range. This spectral shift was used to estimate the stage of cracks formation as degree of damage. The fracture of tested material can be predicted based on estimated degree of damage.
Razia Bahadur Khero
The Professional Medical Journal , 2000,
Abstract: A prospective study was done at LMC Jamshoro over period of one year to evaluate the incidence of complicationsrelated to termination of unwanted pregnancies. Total of 450 patients were admitted with abortion, of these12(2.66%) gave history of induced abortion. 9(75%) women were multiparae and 3(25%) were nulliparus.Three women (25%) died, one (8.33%) needed permanent colostomy and 2(16.66%) developed wound dehiscence.
The Professional Medical Journal , 2003,
Abstract: OBJECTIVES: 80 cases of PPH were analyzed retrospectively to assess the risk factor association, modeof treatment and outcome. STUDY DESIGN: Retrospective study. PERIODS: 02 years, from June 1999to May 2002. SETTING: Peoples Medical College Hospital, Nawabshah. PATIENTS & METHODS: 180cases of PPH were analyzed, keeping in view their age, parity, booking status, mode, type and place ofdelivery. The efficacy of obstetric care was assessed by maternal morbidity and mortality related to PPH andits treatment. RESULTS: Out of 180 patients with PPH, 117 (65 %) were referred cases while 63 (35 %)were delivered at PMCH Nawabshah. Risk factors identified were increasing maternal age, grand multiparity, lack of antenatal care, operative and instrumental deliveries. Underlying pathology was uterine atony68.33 %, retained product of conceptions 20.55 %, GT. injuries 8.33 % and D.I.C 2.77 %. Out of 180patients, 71.11 % patients gave response to medical treatment, 20.55 % needed evacuation of uterus. Uterinepacking done in 15.55 % of cases and simple repair of GT. injuries done in 6.66 %. Obstetricalhysterectomies account for 10 % of cases. Complications in operated patients were paralytic ileus in 6.66%. chest infection 5.55 %. DVT in 1.11 % and pelvic infection in 5.55 % patients. During study period, 72maternal deaths occurred and PPH contributed 31.94 % of it. CONCLUSION: The study revealed that aneffective ante, intra and postpartum care, blood bank facilities and an alert action by Obstetric team are veryimportant in prevention of mortality and mobility of this challenging problem. Training of resident surgeonsand early involvement of skilled and senior personnel are needed to eliminate the substandard care and toreduce the large number of abdominal hysterectomies which were carried out in present series.
Synthesis and Characterization of Iron Oxide Nanoparticles Supported on Ziconia and Its Application in the Gas-Phase Oxidation of Cyclohexanol to Cyclohexanone  [PDF]
Mohammad Sadiq, Gul Zamin, Razia  , Mohammad Ilyas
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.31003

Iron oxide nanoparticles supported on zirconia were prepared by precipitation-deposition method and characterized by XRD, SEM, FT-IR, TGA/DTA, surface area and particle size analysis. Catalytic activities of the catalysts were tested in the gas-phase conversion of cyclohexanol in a fixed-bed flow type, Pyrex glass reactor, at 433 - 463 K. Major detected products were cyclohexanone, cyclohexene and benzene, depending on the used catalyst. The rate of reaction was significantly raised by the introduction of molecular oxygen in the feed gas, thereby suggesting the oxidation of cyclohexanol to cyclohexanone. Furthermore, the catalytic activity of iron oxide nanoparticles supported on zirconia treated with hydrogen at 553 K for 2 hours, was more selective and better than the unreduced iron oxide nanoparticles supported on zirconia, in the gas-phase oxidation of cyclohexanol to cyclohexanone. Experimental results showed that there was no leaching of metal, and that the catalyst was thus truly heterogeneous.

One-Pot Synthesis of Aldol Adduct Catalyzed by Immobilized Picolylamine on Zirconia  [PDF]
Mohammad Sadiq, Razia  , M. Naveed Umar, Gul Zamin
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.31001

Direct aldol reactions have been successfully performed using aromatic aldehyde and cyclic ketone in nonpolar solvent by using immobilized picolylamine on zirconia as a catalyst, in a double walled batch reactor. The prepared catalyst was characterized by SEM, XRD and FT-IR. FT-IR peaks reveal the presence of picolylamine on the surface of zirconia. The catalyst shows excellent catalytic activity in aldol reaction of cyclohexanone with benzaldehyde in cyclohexane giving 2-hydroxyphenylmethylcyclohexanone (55.7% yield) in 4 hr at 80?C. Furthermore, the catalyst is recoverable by simple filtration and could be used several times without significant loss in activity.

Efficiency of Iron Supported on Porous Material (Prepared from Peanut Shell) for Liquid Phase Aerobic Oxidation of Alcohols  [PDF]
Mohammad Sadiq, Razia  , Sajid Hussain, Gul Zamin
Modern Research in Catalysis (MRC) , 2014, DOI: 10.4236/mrc.2014.32006
Catalytic activity and selectivity of prepared catalysts (Fe2O3/ and Fe2O3/AC(KOH)) were investigated for liquid phase aerobic oxidation of primary and secondary alcohols, in a batch reactor, using solvent free condition and/or eco-friendly solvents. The catalysts were characterized by SEM, EDX, XRD, FTIR, TGA/DTA, and surface area and pore size analysis. Experimental data revealed that Fe2O3/AC(KOH) was an efficient catalyst for the oxidation (dehydrogenation) of alcohol while \"\" was found to show catalytic activity for both dehydration and dehydrogenation of alcohols. The catalysts were recycled by simple filtration, and used several times without any loss of catalytic activity.

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