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Browsing Volume 32 by Title

Browsing Volume 32 by Title

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  • 2,7-DICHLOROFLUORESCEIN: A SUITABLE COMPLEXING AGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF OFLOXACIN IN PURE AND PHARMACEUTICAL DOSAGE FORMS 
    SYED HASNAIN ALI; AZIZ UR REHMAN; MUHAMMAD JAHANGIR; SABAHAT ZAHRA SIDDIQUI; MUHAMMAD ASHFAQ; MUHAMMAD ZAHID QURESHI; MUHAMMAD ATHAR ABBASI; VIQAR UDDIN AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi, 2010-04-02)
    Ofloxacin is a broad spectrum antibiotic effective against many Gram positive and Gram negative bacteria as well as for some key anaerobes. Ofloxacin was reacted with 2,7-dichloroflourescein in an acidified medium at room ...
  • Acidic Surface Functional Groups and Mineral Elements in Lakra Coal (Sindh, Pakistan) 
    KHALID SATED; MUHAMMAD ISHAQ; IMTIAZ AHMAD; MUHAMMAD SHAKIRULLAH; SAJJAD HAIDER (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-04-06)
    Surface acidity of virgin coal (Lakra Sindh, Pakistan) and variously extracted/leached coal samples leached with HNO₃, NaOH, and KMnO₄, were investigated by aqueous potentiometric titration employing KOH as a titrant. The ...
  • Adsorption of Azo Dye on Activated Carbon Prepared from Waste Wood: 2. Equilibrium 
    SULTAN ALAM; FAZAL MABOOD; MOHAMMAD SADIQ; NOOR-UL-AMIN; FAZLULLAH KHAN BANGASH (Karachi: The Chemical Society of Pakistan, 2010-12-01)
    The present study was designed to investigate the effect of activation temperature on carbon prepared from the wood of Salvadora oleoides. The samples were characterized. Activation at 800 ºC is higher due to the decrease ...
  • ADSORPTION OF CADMIUM (II) BY CHITIN 
    CHUNHUA XIONG (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The feasibility of using chitin as an adsorbent for cadmium (II) was examined. The adsorption characteristics were studied as a function of solution pH, temperature, contact time et. al., Maximum uptake amount of cadmium ...
  • Adsorption Studies of Copper on a-Alumina 
    SUMRA NAEEM; UZMA ZAFAR; NASEEM ZAHRA; GHULAM RASOOL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    In this investigation, adsorption of Cu2+ on α-Alumina has been studied by means of batch-technique. Percentage adsorption was determined for α-Alumina-Copper solution system as a function of contact time, pH, adsorbate ...
  • Analysis of Free Oxygen Radicals and Antioxidant Enzyme Activities in Blood and Liver Tissues of Rabbits Operated with Argon Plasma Scalpel 
    MUSTAFA YONTEM; SULEYMAN KALELI; MEHMET AKDOGAN; RAMAZAN KAYAPINAR; FATIH GULTEKIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-06-15)
    In surgical operations, many techniques are used and their side effects are investigated. The purpose of this study was to analyze free radicals and antioxidant enzyme activities in blood and liver tissues of rabbits which ...
  • Analysis of Toxic Heavy Metals in Branded Pakistani Herbal Products 
    MUHAMMAD SAEED; NAVEED MUHAMMAD; HAROON KHAN; SAEED AHMAD KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The present study was designed to estimate the concentration of heavy toxic metals in Pakistani herbal products frequently used for the treatment of various ailments. For this purpose, twenty five herbal products of well ...
  • Anodizing of Aluminum with Improved Corrosion Properties 
    PETER JOHN; ISLAM ULLAH, KHAN; SHAHID TUFAIL, SHEIKH; NAEEM GULZAR; AZIZ-UR-REHMAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Anodizing of aluminum was studied in sulphuric/oxalic/boric acid electrolyte system. The corrosion resistance of the anodic oxide coating of aluminum was determined by potentiodynamic polarization test and scanning electron ...
  • Antibacterial Compounds and other Constituents of Evernia divaricata (L.) Ach. 
    CHAO YUAN; XIU JUAN ZIIANG; YUAN DA DU; YU HUA GUO; LI YAN SUN; QIANG REN; AA TIAN ZHAO (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-04-11)
    An activity-directed fractionation and purification process was used to isolate the antibacterial compounds from Evernia divaricata (L.) Ach. Six lichen substances were obtained from the active petroleum ether and ethyl ...
  • ANTIBACTERIAL, ANTIMALARIAL AND LEISHMANICIDAL ACTIVITIES OF CU (II) AND NICKEL (II) COMPLEXES OF DICLOFENAC SODIUM 
    FAZAL-UR-REHMAN; MUHAMMAD FARID KHAN; INAM ULLAH KHAN MARWAT; GUL MAJID KHAN; HAROON KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Metal complexes are famous for a wide array of chemotherapeutic effects. The current study was designed to synthesize and evaluate unexplored chemotherapeutic effects of Cu (II) and Nickel (II) complexes of the non-steroidal ...
  • Antileishmanial Steroidal Alkaloids from Roots of Sarcococca coriacea 
    MUHAMMAD IQBAL, CHOUDHARY; ACHYUT ADHIKARI; SAMREEN; ATTA-UR-RAHMAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-12-20)
    Bio-assay guided isolation of secondary metabolites from the plant Sarcococca coriacea (Hook. f.) yielded two steroidal alkaloids, alkaloid C (1) and iso-N-formylchonemorphine (2). The structures of compounds were identified ...
  • Arsenic Contamination in Water and its Removal by using Different Low Cost Adsorbents 
    NASEEM ZAHRA (HEJ Research Institute of Chemistry, University of Karachi, Karachi, 2010-04-20)
    Industrial waste constitutes the major source of various kinds of pollution in natural water and toxicity from heavy metals has been reported worldwide. The presence of arsenic in water is major problem these days. High ...
  • Assessment of Iodine Status among Hostel Employees and Students of a University in Islamabad, Pakistan 
    MUHAMMAD RAFI; KAZI QASIM MAHMOOD; MUHAMMAD TUFAIL; MUHAMMAD MANSHA CHAUDHRY; NASEEM IRFAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Iodine deficiency and related disorders are the major health hazard in the world, especially along the Himalayas. A study has been carried out to assess the status of iodine in students and employees living in the hilly ...
  • Biological Activities of Various Crude Fractions of Solanum xanthocarpum's Fruits 
    HAMID ULLAH, SHAH; ZAHIDA WASIL; ANWAR ALI, SHAD; TAHIRA MAHMOOD; RASOOL KHAN; MUHAMMAD IQBAL, CHOUDHARY (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Crude methanolic, and non-alkaloidal chloroform, hexane and methanol extracts of the fruits of Solanum xanthocarpum, were tested for their in vitro antifungal, antibacterial, leishminicidal, insecticidal, cytotoxic and ...
  • Biosorption Treatment of Brackish Water 
    MUHAMMAD RIZWAN; ATHAR, MUHAMMAD MAKSHOOF; MUHAMMAD ALI; SHAHEEN, MUHAMMAD ASHRAF; TARIQ, MUHAMMAD ILYAS; SHAHID IQBAL; FAYAZ UR REHMAN; ROBEENA FAROOQ; ABDUL KARIM; NAZIR AHMED; SHAZIA MAQBOOL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Biosorptivity of different agricultural wastes have been evaluated for the treatment of brackish water and a new method, based on the principle of bio-sorption has been described. Wastes of the Saccharum officinarum, Moringa ...
  • Calibration of Shahid's Analytical Method for Adulterated Zn-EDTA Fertilizers by Ion Chromatography and Atomic Absorption Spectroscopy 
    MUHAMMAD SALIK, Ali Khan; MUHAMMAD AKRAM; SHAHID MAHMOOD MIAN; RANA JAVAID IQBAL; MUHAMMAD AKRAM QAZI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Chelated zinc fertilizers are usually recommended in calcareous alkaline soils to provide Zn nutrition in order to prevent possible Zn precipitation. In Punjab (Pakistan), Zn.EDTA products are being manufactured, and ...
  • Capillary Gas Chromatographic Determination of Dopamine by Pre-column Derivatization Method using Trifluoroacetylacetone as Derivatizing Reagent 
    MUHAMMAD YAR KHUHAWAR; LIAQUAT ALI ZARDARI; SUBHAN ALI MAJIDANO; ASGHAR ALI MAJIDANO (Karachi: The Chemical Society of Pakistan, 2010-12-13)
    Capillary gas chromatographic separation of putrescine (Pu), cadaverine (Cd), dopamine (DA) and octopamine (OA) as derivatives of trifluoroacetylacetone (FAA) has been carried out using a column HP-5 (30 m × 0.32 mm id), ...
  • Catalytic Conversion of Waste Inner Tube Rubber (Isobutylene Isoprene) into Valuable Products 
    FAZAL MABOOD; MOHAMMAD RASUL JAN; JASMIN SHAH; FARAH JABEEN; SULTAN ALAM; MOHAMMAD SADIQ; JAVID HUSSAIN; ZAHID HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-12-11)
    Waste inner tube rubber (isobutylene isoprene) represents a source of energy and valuable chemical products. Waste inner tube rubbers were pyrolysed catalytically in a batch reactor under atmospheric pressure. Calcium ...
  • Catalytic Conversion of Waste Low Density Polyethylene into Valuable Products 
    FAZAL MABOOD; JASMIN SHAH; MOHAMMAD RASUL JAN; ZAHID HUSSAIN; FARAH JABEEN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Waste low density polyethylene (LDPE) from household and industries are recognized to be a major environmental problem. LDPE represent a source of energy and valuable chemical products. Waste LDPE were pyrolysed catalytically ...
  • Cathodic Voltammetry of Nitrobenzene at Titanium in Micellar Solution 
    IMAM-UL-HAQUE; MUQADDAS TARIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-06-04)
    The present study relates to electro-reduction of nitrobenzene in the presence of miceller aqueous solution of sodium dodecyl sulphate at titanium cathode, using cyclic voltammetric and titanium etching methods in a ...

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