Pakistan Science Foundation: Recent submissions

  • Investigation of Heavy Metals Content in Medicinal Plant, Eclipta alba L. 
    IQBAL HUSSAIN; HAMAYUN KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Heavy metal such as Cr, Fe, Zn, Mn, Ni, Pb, Cu and Cd were investigated in a medicinally important plant, Eclipta alba L. as well as in the soil it was grown using atomic absorption spectrophotometer. The plant samples ...
  • Effect of Grafting Ratio on Rheological and Mechanical Properties of High Density Polyethylene-graft-Maleic Anhydride/Polyamide 6 Blends 
    CHENGZHI CHUAI; MAHMOOD IQBAL; MUHAMMAD AIJAZ; MANZOOR IQBAL; LIU HIU (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Graft copolymerization of high density polyethylene with a maleic anhydride was carried out using intermeshing co-rotating twin screw extruder in the presence of benzoyl peroxide (BPO).The HDPE/PA6 and HDPE-g-MAH/PA6 blends ...
  • Effect of Drought and Abscisic Acid Application on the Osmotic Adjustment of Four Wheat Cultivars 
    SUMERA IQBAL; ASGHARI BANO (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    The accumulation of osmolytes in leaf tissues and the abscisic acid-induced stomatal closure are well-recognized mechanisms associated with drought tolerance in crop plants. We determine the response in terms of osmotic ...
  • Geochemical Investigation of Crude Oils from Different Oil Fields of the Potwar Basin 
    TAHIRA FAZEELAT; MUHAMMAD ASIF; ABDUS SALEEM; ARIF NAZIR; MUHAMMAD AMIR ZULFIQAR; SHAGUFTA NASEER; SHAHID NADEEM (Karachi: The Chemical Society Of Pakistan, 2009-12-03)
    Crude oils (12) from the Potwar Basin, have been analyzed to obtain geochemical information on source and depositional environment of organic matter, maturation, biodegradation and geochemical correlation. Bulk and molecular ...
  • Production and Effective Utilization of Carbonized Sludge of Industrial Wastewater Treatment Plant 
    YOUNG-JU, KIM; JUNG-HOON, CHOI; JI-HOON, KIM; CHANG-SOO, LEE; TAHlR IMRAN, QURESHI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Industrial wastewater sludge was successfully converted into a carbonized product of maximum environmental benefits. Carbonization was carried out to determine an optimum temperature conditions in order to get low temperature ...
  • Environmental Pollution, A Threat to Photosynthesis in Healthy Plants 
    GULREZ FATIMA DURRANI; MUSA KALEEM BALOCH (Karachi: The Chemical Society Of Pakistan, 2009-12-01)
    Environmental pollutants, in atmosphere depend upon the source, strength, meteorological conditions and topography and effect the flora and fauna. Photosynthesis, which is the main necessity for plants to maintain their ...
  • Ultrasound in Chemical Processes 
    SOFIA BAIG; ROBINA FAROOQ; AMIR HAIDER MALIK; NADIA BAIG UZBEK (Karachi: The Chemical Society Of Pakistan, 2009-12-02)
    The use of ultrasound to promote 'chemical' reactions or Sonochemistry is a field of chemistry which involves the process of acoustic cavitations i.e. the collapse of microscopic bubbles in liquid. There are two essential ...
  • Thermodynamic Properties of Amphiphilic Antidepressant Drug Citalopram HBr 
    MUHAMMAD USMAN; ABBAS KHAN; MOHAMMAD SIDDIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Association characteristics of antidepressant drug Citalopram hydrobromide in water have been examined and its thermodynamic parameters have been calculated using tensiometery and conductometry. The critical micelle ...
  • The Role of Fungi as Aeroallergens in Asthma and Allergies 
    MUHAMMAD ANWAR, WAQAR; TASNEEM AKHTER; ASMA WAQAR; SOHAIL SHAUKAT; MUNEEBA KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    Allergies and asthma are worldwide diseases causing various health problems. Their symptoms include episodic wheeziness, breathlessness, dry cough, etc. Sensitivity to a variety of fungi is known to be a major factor in ...
  • Herbs can Effectively Talk with Diabetogenes 
    MUHAMMAD ANWAR, WAQAR; SANA AIJAZ; SOHAIL SHAUKAT; ASMA WAQAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    Diabetes mellitus type-2 is a sweet killer disease, yet to be conquered. The frequency of this disease is constantly growing, emphasizing the need of new insights into the disorder's ground realities and novel strategies ...
  • Multiple Signaling Pathways Mediated by Dopamine and Calcium ionophore A23187 in Human Platelets 
    SHEIKH ARSHAD, SAEED; MUHAMMAD ANWAR, WAQAR; JAVERIA QUADRI; ZIA-UR-REHMAN, QURESHI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    This study was undertaken to investigate the mechanism(s) of platelet aggregation induced by the synergistic action of dopamine (DA) and a Ca2+ -ionophore, A23187. DA showed non significant effect on platelet aggregation ...
  • Synthesis of 2-Hydroxypropyl Dimethylbenzyl Ammonium N,O-Carboxymethyl Chitosan Chloride and Its Antibacterial Activity 
    ZHU, XUE-MEI; CAI, ZHAO-SHENG; YANG, CHUN-SHENG; SHANG, SHl-BlN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    N,O-carboxymethyl chitosan (N,O-CMC) was prepared from chitosan with chloroacetic acid as modifying agent and NaOH as binding-acid agent. 2-Hydroxypropyl dimethyl benzyl ammonium N,O-carboxymethyl chitosan chloride ...
  • Cholinomimetic and Calcium Channel Blocking Activities of the Aerial Parts of Tylophora hirsuta (Wall.) 
    BASHIR AHMAD; NIAZ ALI; SHUMAILA BASHIR; JAMSHAID AHMAD; SADIQ AZAM; IBRAR KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    The effects of crude methanolic extract of Tylophora hirsuta (Th.cr) were studied for possible cholinommetic and calcium channel blocking activities in rabbit's jejunum preparations at different doses. Maximum spasmogenic ...
  • Effect of Pretreatments on Enhanced Degradation of Polyisoprene Rubber by Newly Isolated Bacillus sp. Strain SIO 
    ZIAULLAH SHAH; SHAH, AAMER ALI; ABDUL HAMEED; FARIHA HASAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    The present investigation was conducted to isolate polyisoprene rubber (latex gloves) degrading microorganisms from soil. Twelve bacterial species were isolated through enrichment technique and were screened for their ...
  • Greener Approach to the Synthesis of 4-Thiazolidinone Derivatives Using Phase Transfer Catalysts under Microwave Irradiation 
    MUHAMMAD NAEEM; CHAUDHRY, MUHAMMAD NAWAZ; BALOCH, IFTIKHAR HUSSAIN; RANA AMJAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    A series of ten newly synthesized compounds are reported by adopting environment friendly microwave irradiation methodology, with an idea that these compounds will be tested for in vitro antibacterial and antifungal activity. ...
  • Investigation of Contaminated Environmental Samples; US DOE EML Laboratory's Quality Assessment Programme 
    NAILA SIDDIQUE; ASMA RAHMAN; SHAHIDA WAHEED; MOHAMMAD WASIM; MOHAMMAD DAUD; SHUJAAT AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    A Quality Assessment Programme (QAP) was initiated by the US, Department of Energy (DOE) in 1998 to establish reliability in the measurement of radionuclides in contaminated environmental samples, i.e. soil, vegetation and ...
  • Synthesis and Characterization of Zinc and Cadmium complexes with Deoxyalliin 
    SHAHBAZ NAZIR; JAMIL ANWAR; MUNAWAR ALI, MUNAWAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    Zinc and Cadmium complexes with the amino acid, deoxyalliin (S-Allyl Cysteine), having the formulae [Zn(C6H10O2NS)2] and [Cd(C6H10O2NS)2] were synthesized and characterized by elemental analysis, FT-IR, thermogravimetry-FT-IR ...
  • Synthesis and Structural Aspects of 2-Chloro-N, N-dimethylbenzylamine and its Complexes with Mo(CO)6 and W (CO)6 
    TARIQ MAHMUD; MUHAMMAD IMRAN; JAVED IQBAL; VlCKIE MCKEE (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    A new ligand 2-chloro-N,N-dimethylbenzylamine has been synthesized by the amination of 2-chloro-benzyl bromide. The synthesized ligand was further reacted with W(CO)6 and Mo(CO)6 to yield 2-chloro-N,N-dimethylbenzylamine ...
  • Partition Studies on Aqueous Two-Phase System using Sodium Dodecyl Sulphate and Ammonium Salts for Extraction of Dyes 
    REHANA KOUSAR; NIAZI, SHAHIDA BEGUM; FARZANA MAHMOOD; FARZANA IRAM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    An aqueous two-phase system consisting of sodium dodecyl sulphate (SDS), an anionic surfactant, and NH4NO3 / (NH4)2SO4 as salting out agent has been used for the extraction of ionic dyes. Transparent aqueous two-phase ...
  • Chemical Pollution Profile of Rehri Creek Area, Karachi (Sindh) 
    ATIF SHAHZAD; KHAN, MOAZZAM ALI; S. SHAHID SHAUKAT; WAQAR AHMED (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)
    The present investigation focuses on environmental issues along Rehri Creek area, which is an imperative creek of economic importance. During the study, a total of 30 samples of wastewater (industrial waste, Cattle colony ...

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