• Phytochemical Studies on Daphne mucronata 

  RASOOL, MUHAMMAD AZAM; IMUHAMMAD IMRAN; HAQ NAWAZ; ABDUL MALIK; KAZMI, SHAHANA UROOJ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Eleven compounds have been isolated for the first time from Daphne mucronata namely, cinnamic acid (1), 7,8-dimethoxycoumarin (2), 7,8-dihydroxycoumarin (3), lupeol (4), ßamyrin (5), betulin (6), 5,6,7,8,3',4'-hexamethoxyflavone ...
• Chemical Composition, Antioxidant and Antimicrobial Activities of Citrusjambhiri Lush and Citrus reticulata Blanco Essential Oils 

  SANA SADAF; BHATTI, HAQ NAWAZ; ZAFAR IQBAL; MUHAMMAD SHAHID (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  The aim of this study was to investigate the time interval in which we can get maximum concentration of essential oil from the peels of Citrusjambhiri Lush and Citrus reticulata Blanco, to determine the composition of peel ...
• Mechanistic Studies on the Reaction of 0-phthalaldehyde (OPTA) with Urea and its N-alkyl/aryl Derivatives 

  BUSHRA MALIHA; ISHTIAQ HUSSAIN; TARIQ, MUHAMMAD ILYAS; SIDDIQUI, HAMID LATIF (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Urea and its N-alkyl/aryl derivatives react with o-phthalaldehyde (OPTA) to yield blue to purple coloration along-with isoindoline compounds (VII a,b,c) in acidic media. The color is unstable and changes into various shades ...
• An Improved Method for the Synthesis of 5-Arylidene Barbiturates using BiC13 

  KHAN, KHALID MOHAMMED; MUHAMMAD ALI; FAROOQUI, TANVEER AHMAD; MOMIN KHAN; MUHAMMAD TAHA; SHAHNAZ PERVEEN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  An improved and eco-benign synthesis of arylidene barbiturates has been developed by using bismuth chloride (BiCl3) in water. Execution is simple and products yields were very high. All the reactions were completed in 30 ...
• Nutritive Values of Brassica campestris L. Oil as Affected by Growth Regulator Treatments 

  ASGHARI BANO; NADEEM KHAN; FAIZANULLAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  The effects of plant growth regulators, viz. Indole acetic acid (IAA), Gibberellic acid (GA) and Abscisic acid (ABA) were studied on fatty acid compositions, glucosinolate content and protein content of Brassica campestris ...
• Synthesis, Leishmanicidal and Enzyme Inhibitory Activities of Quinoline-4-Carboxylic Acids 

  KHAN, KHALID MOHAMMED; SUMAYYA SAIED; MUGHAL, UZMA RASOOL; MARIUM MUNAWAR; SAMREEN; AJMAL KHAN; SHAHNAZ PERVEEN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  A series of quinoline4-carboxylic acids 1-13 wæ synthesized and screened for their leishmanicidal, phosphodiesterase, ß•glucuronidase md urease inhibitory properties. Only compounds 3 and 7 were found to be active against ...
• Quantification and Diversity in the Black Seeds (Nigella sativa L.) Gene Stock of Pakistan for their Composition of Mineral Nutrients 

  IQBAL, MUHAMMAD SAJJAD; ABDUL GHAFOOR; QURESHI, AFSARI SHARIF (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Nigella sativa (L.) a member of family Ranunculaceae is an annual herbaceous plant indigenous to the Mediterranean region contains more than 100 nutrients and had been used for edible and medicinal purposes in major parts ...
• Microwave-assisted Synthesis of Chiral Bibenzimidazoles 

  GANG CHEN; YING TANG; MEI MENG; XUE-FAN GU (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Three chiral bibenzimidazoles were synthesized by condensation of o-phenylenediamine with L-(+)-glutamic acid, L-(+)-aspartic acid and L-(+)-tariaric acid under microwave irradiation, promoted by polyphosphoric acid (PPA). ...
• Immobilization of Alchidine on the Physical Polymer-clay Composite Gels 

  KUDAIBERGENOVA, BATES MALIKOVNA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  The regularity immobilization of medical mixture of compounds —alchidine over the composite carrier on the basis of bentonite clay and physical polymer gels have been studied by the methods of sorption and desorption. It ...
• Application of Response Surface Methodology to Optimize Medium Components for Production of Alkaline Protease by Bacillus subtilis IC-5 

  SHEREEN GUL; MUJEEB-UR-RAHMAN; IRFAN HAFEEZ; ACHAKZAI, ABDUL KABIR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Optimization of fermentation medium for production of alkaline protease by using Bacillus subtilis IC-5 was carried out. The concentration of agricultural by product (soybean meal). carbon source (glucose) and nitrogen ...
• 130 kDa Acid Phosphatase from the Liver of Labeo Rohita: Isolation, Purification and some Kinetic Properties 

  AISHA SIDDIQUA; MEHRIN SHERAZI; RUBINA NAZ; IRSHAD ALI; ASMA SAEED; SHAH, ABDUL HALEEM; KHAN, ABDUR RAHIM; MUSHTAQ AHMAD; KHAN, HIDAYAT ULLAH; AHMAD SAEED (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  An isoenzyme of high molecular weight acid phosphatase (HM-ACP) from the liver of fish Rohu (Labeo Rohita) was isolated and purified to homogeneity. The enzyme had specific activity of 14.96 U/mg and a recovery of about 4 ...
• Assessment of Bioactivity of Cassiafistula Using Bombyx mori Lethality Assay 

  MUHAMMAD ASHFAQ; HANIF, MUHAMMAD ASIF; JAMIL, MUHAMMAD SALMAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  In recent times, focus on plant research has increased all over the world and a large body of evidence is being collected to evaluate immense potential of medicinal plants used in various traditional systems. In this regard, ...
• Effect of Time Intervals on Levels of Selected Heavy Metals in Surface and Ground 

  ZAKIR, SHAHIDA NASREEN; IHSAN IHSANULLAH; SHAH, 'MUHAMMAD TAHIR; ZAFAR IQBAL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  During the last two decades, the high rate of industrialization, unplanned urbanization and heavy load of transportation resulted in a drastic increase in water pollution within the Peshawar basin in general and in the ...
• Comparison of Two Extraction Methods for Metals from Atmospheric Particulate Matter 

  QURAISHI, TAUSEEF AHMAD; MIR, BISMA PERVEZ; SCHAUER, JAMES JAY (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  : Particulate pollution in ambient air of Lahore is a serious problem. Atmospheric particulates concentrations (PMIO) were measured at the city centre during February to April 2007, which ranged between 465 and 806 pg/m3 ...
• Mixed Complex Combinations with a New Schiff Base used as Membranes Ion-Selective for Copper and Nickel Ions; Analytical Applications 

  LIVIU MITU; CRISTIAN TIGAE; CEZAR SPINU; MARIA PLENICEANU (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Four electrodes with liquid membrane, Cu2+-selective and Ni2+-selective, not previously described in the literature, were prepared and characterized. Electrodes I and 2 are based on mixed complexes of Cu(ll) and Ni(ll) ...
• Determination of Activation Energy for the Degradation of Rhodamine B in the Presence of Hydrogen Peroxide and some Metal Oxide 

  ABBAS MEHRDAD; ROBAB HASHEMZADEH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  In this research, degradation of rodamine B in the presence of (hydrogen peroxide), (hydrogen peroxide+aluminum oxide), (hydrogen peroxide+nano-sized aluminum oxide) and (hydrogen peroxide+iron oxide) was curried out at ...
• Effect of the Hydrophilic Block Length on the Micellar Properties of Oxyethylene-Oxybutylene Diblock Copolymers in Aqueous Solution: Density and Viscosity Studies 

  ABBAS KHAN; DURRANI, GULREZ FATIMA; MUHAMMAD USMAN; WAYNE HARRISON; MOHAMMAD SIDDIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  Density and viscosity measurements, over a wide range of concentration and temperature, were implied to investigate the effect of hydrophilic block length on the micellar properties of the aqueous solution of E40B8, EgoB8 ...
• Identification of Radiation Treatment of Frozen Chicken and Fresh Turkey using DNA Comet Assay 

  KHAN, HASAN MAHMOOD; KHAN, ASHFAQ AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  DNA comet assay was applied to check the detection of radiation treatment of frozen chicken and fresh turkey. The cells from unirradiated and irradiated samples of chicken and turkey were extracted in cold PBS, embedded ...
• Oxidation of CO by 02 over ZnO Studied by FTIR Spectroscopy 

  GHULAM HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  The adsorption of CO at room temperature on finely divided ZnO surfaces, studied by FTIR, shows reversible bands (2250-2050 cm-I) and irreversible absorption bands (1800-600 cm-I ). The irreversible absorption bands (1800-600 ...
• Micellization of Dodecyl Benzenesulfonic Acid and its Interaction with Poly(Ethylene Oxide) Polymer 

  KHAN, MOHAMMAD SALEEM; ZARSHAD ALI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

  The interaction between dodecyl benzene sulfonic acid (DBSA) with poly (ethylene oxide) (PEO) has been investigated at 293 K by conductance and surface tension measurements. The effect of concentration on the electrical ...

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