Pakistan Science Foundation: Recent submissions

  • 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) ...
  • Microencapsulation of Tramadol Hydrochloride and Physicochemical Evaluation of Formulations 
    GHULAM MURTAZA; MAHMOOD AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    The present project involves the microencapsulation of tramadol hydrochloride with ethocel using a non-solvent addition coacervation technique. The concentration of ethocel was varied to get a prolonged release profile. ...
  • Selective Acylation of Alcohols in the Presence of Phenols 
    MUHAMMAD RAZA SHAH; QAMAR ALI; ZAHID HUSSAIN; ITRAT ANIS (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-25)
    A versatile method of chemoselective acylation of alcohol has been developed by way of Mitsunobu based strategy. The reaction works under mild conditions and can be selectively employed in presence of phenolic groups and ...
  • ANTIMICROBIAL CONSTITUENTS FROM AERVA JAVANICA 
    AHSAN SHARIF; EJAZ AHMED; ABDUL MALIK; MUKHTAR -UL- HASSAN; MUNAWAR ALI MUNAWAR; ALEEZA FARRUKH; SAEED AHMAD NAGRA; JAMIL ANWAR; MUHAMMAD ASHRAF; ZAID MAHMOOD (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-24)
    In the course of screening program we have isolated six natural products from the whole plant of Aerva javanica. Isoquercetrin (1), 5-methylmellein (2), 2-hydroxy-3-O-β -primeveroside naphthalene-1,4-dione (3), Apigenin ...
  • 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 ...
  • Surface Area and Pore Size Distribution of Activated Carbon Produced from Low Cost Precursors 
    SULTAN ALAM; BANGASH, FAZLULLAH KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)
    Fast growing wood (Paulownia tomentosa-PT, Ailanthus altissima-AA, Salvadora oleoides-SO) and animal bones were utilized for the preparation of activated carbon. The carbon samples were activated by thermal means (400-10000C). ...
  • HOMOLOGY MODELING OF BOVINE KAPPA-CASEIN 
    GHOSIA LUTFUAALAH; AZRA AMJAD; FARHAT AMIN; ASHFAQ AHMAD (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-23)
    The stability of the milk casein is dependent on the presence of Kappa-casein on the surface of the micelle where it serves as an interface between the hydrophobic caseins and the aqueous environment of milk. Crystal ...
  • SYNTHESIS, CHARACTERIZATION AND ANTIBACTERIAL ACTIVITY OF SOME ENAMINONES AND THEIR COMPLEXES WITH NICKEL (II) AND ANTIMONY (III) 
    TARIQ MAHMUD; RABIA REHMAN; RIAZ HUSSAIN; MUHAMMAD SALMAN; UMER SHAFIQUE; JAMIL ANWAR; WAHEED -UZ- ZAMAN; ANSA SANA (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-22)
    Enaminones; 4-N,N-diethylamine-pent-3-ene-2-one [HL1], 4-N,N-di-n-propylamine-pent-3-ene-2-one [HL2] and 4-N,N-dicyclohexylamine-pent-3-ene-2-one [HL3] and their complexes with Ni (II) and Sb (III) ions were prepared by ...
  • SYNTHESIS, SPECTRAL INVESTIGATION (1H, 13C) OF NEW (N, O AND S BASED) SCHIFF BASES AND EVALUATION OF THEIR ANTIMICROBIAL ACTIVITIES 
    MUHAMMAD KALEEM KHOSA; SHAHZAD ALI SHAHID CHATHA; MADHIA NISAR; KHALIL -UR- REHMAN; MUHAMMAD ASGHAR JAMAL; MUHAMMAD YOUSAF (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-21)
    Three new series of biologically active amino substituted Schiff bases (1-12) with general formula, R1N=CHR2 (R1 = 2-amino-benzthiazole, 4-amino-salicylic acid and 4-aminophenol; R2 = benzaldehyde, 2-chloro-benzaldehyde, ...
  • Quinazolinediones and Quinazolinethiones by Intramolecular Ester Amidation 
    EJAZ AHMED; MUHAMMAD RAMZAN MANWAR; AHSAN SHARIF; MUKHTAR-UL-HASSAN; NEMAN AHMED; ABDUL MALIK; ZAID MAHMOOD; MUNAWAR ALI MUNAWAR (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-20)
    A new synthetic route was devised for synthesis of Quinazoline-2,4(1H,3H)-dione 5 in which salicylic acid 1 was treated with urea 2 to afford urea arylated ortho-urahydroxy benzoic acid 4. Ortho-urahydroxy benzoic acid 4 ...
  • VOGELATE: A NEW LONG-CHAINED ESTER FROM ERYTHRINA VOGELII HOOK. (FABACEAE) OF CAMEROON 
    MUHAMMAD SHAIQ ALI; MUHAMMAD IMRAN ALI; ZEESHAN AHMED; ALAIN FRANCOIS KAMDEM WAFFO (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-19)
    A new long-chained ester named vogelate has been isolated from leaves of Erythrina vogelii, a Cameroonian Fabaceous plant, along with seven known constituents [erythrinasinate, 2,3-dihydro-auriculatin, soyasapogenol-B, ...
  • SYNTHESIS AND SPECTROSCOPIC PROPERTIES OF A NOVEL PERYLENEDIIMIDE DERIVATIVE 
    ÖZGÜL HAKLI-BİREL; HALUK DİNÇALP; CEYLAN ZAFER; ŞERAFETTİN DEMİÇ; KRISTOF COLLADET; DIRK VANDERZANDE; YUDA YÜRÜM; SIDDIK IÇLİ (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-18)
    A novel symmetric 3,4,9,10-perylenetetracarboxylic acid derivative (PDI1) dye based on thiophene donor group was synthesized and characterized by FT-IR and 1H NMR. Cyclic Voltammetry analysis is performed to determine ...
  • THE FAS/FASL PATHWAY MEDIATES APOPTOSIS OF SPLENIC LYMPHOCYTES IN PIGLETS INFECTED WITH PCV2 
    LIZHONG HUA; YUN SUN; GENG CHEN; SHUXIA ZHANG (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-17)
    The aim of this study is to investigate the molecular pathogenetic mechanism of PCV2-induced apoptosis in the porcine spleen. Nineteen piglets were allotted into four groups and sacrificed at 0, 14, 21, or 35 days post ...

Search DSpace


Advanced Search

Browse

My Account