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Browsing Issue 05 by Title

Browsing Issue 05 by Title

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  • Econometrics Models for Copper Recovery: A Case Study of North Waziristan-Copper Deposits 
    SARDAR ALI; MUHAMMAD MANSOOR KHAN; MUHAMMAD AZAM KHAN; MUHAMMAD TUFAIL; SADAF (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Fourteen econometrics models have been developed to evaluate the effects of various flotation process variables like, Propylxanthate (X1 g/tonne), pH (X2,) Sodium Cyanide (X3 g/tonne), Sodium sulphide (X4 g/tonne), Frother ...
  • Effect of Temperature on Sequestration of Cu(ll) from Aqueous Solution onto Turmeric Powder 
    AMTUL QAYOOM; SYED ARIF KAZMI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    In this work effect of temperature on adsorption of Cu(II) onto turmeric powder was investigated in order to understand sequestrating behavior of turmeric powder. Langmuir, Freundlich and D-R equilibrium models were employed ...
  • Electrochemical Behavior of Vinblastine Sulfate at Platinum in Acetonitrile 
    INAM-UL-HAQUE; HlNA SABA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Cyclic, normal-pulse, reverse-normal-pulse, differential-pulse and square-wave voltammetry of vinblastine sulfate was investigated in acetonitrile containing 0.2 M sodium perchlorate without and with 21.4 mM pyridine present ...
  • Epicuticular Wax of Tamarix aphylla L. 
    MUHAMMAD SABER; MUHAMMAD AKRAM KASHMIRI; MUSHTAQ AHMAD; RAISA KHANUM; AYESHA MOHY-UD-DIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Epicuticular wax from the leaves of Tamarix aphylla L. was extracted using n-hexane as a solvent and its yield was found to be 0.34 %. The wax constituents were characterized and identified by GC/MS and NMR spectroscopy. ...
  • Evaluation of Selenium Content of Plant Samples Collected from Indigenous Sources for Se-supplementation 
    TARIQ MAHMUD; ARIFA SOSAN; RABIA REHMAN; MUHAMMAD IMRAN; AADIL ABBAS (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    Selenium contents were evaluated in different plant species such as Canola (Brassica napus), Sunflower (Helianthus annus), Turmeric (Curcuma longa), Soyabean Seeds (Glycine max) and Akk (Calotropis procera) in order to ...
  • GC-MS Analysis of n-hexane Extract from Seeds and Leaves of Phoenix dactylifera L. 
    SUMBUL AZMAT; REHANA IFZAL; MUNAWWER RASHEED; FARYAL VALI; VIQAR UDDIN AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    n-hexane extract of Phoenix dactylifera L (Date Palm) seeds and leaves was analyzed through capillary GC-MS. The compounds were identified by comparison of GC-MS spectrum with library searches. A total of forty one compounds ...
  • Impacts of Solid Waste Leachate on Groundwater and Surface Water Quality 
    SIDRA KARIM; MUHAMMAD NAWAZ CHAUDHRY; KHURSHED AHMED; ADlLA BATOOL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    The present investigation was carried out to assess the impacts of solid waste leachate on groundwater and surface water quality at unlined dumping site. Six leachate samples collected from different locations have average ...
  • Modified Synthesis of Phenolic Novolac by Biomass Pyrolysis Oil 
    XU JUNMING; JIANG JIANCHUN; DAI WEIDI; SUN YUNJUAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    The possibility of synthesis of fast curing phenolic novolac has been studied under the catalyst of HCl/ Zn(AC)₂ . Synthesis of high-ortho novolac resins modified with different concentration (10, 20, 30 and 40 wt %) of ...
  • New High Performance Liquid Chromatographic Method for Simultaneous Determination of Diclofenac and Meloxicam in Oral Formulation of Liposomes and Human Plasma 
    ASADULLAH MADNI; MAHMOOD AHMAD; MUHAMMAD USMAN; MALIK MUHAMMAD ZUBAIR; MUHAMMAD QAMAR-UZ-ZAMAN; HAJI MUHAMMAD SHOAIB; ABUBAKAR MUNIR; SHUJAT ALI KHAN; MUHAMMAD NAEEM AMIR; MUHAMMAD SALEEM QURESHI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    A new, easy and consistent reversed-phase high-performance liquid chromatographic method with diode array detection has been developed and validated for the simultaneous determination of diclofenac potassium (DP) and ...
  • Obesity: A Road to the Type 2 Diabetes 
    MUHAMMAD ANWAR WAQAR; SANA AIJAZ; SOHAIL SHAUKAT (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    The prevalence of type 2 diabetes is on the increase. Among the other factors, obesity is considered to be a major contributor in the occurrence of type 2 diabetes by disturbing the metabolic regulators of the body. These ...
  • PREPARATION OF COMPLEXES OF 2-[{5-((5-AMINO-1,3,4-THIADIAZOLE-2-YL)METHYL)-1,3,4-THIADIAZOLE-2-YL-IMINO}METHYL]PHENOL WITH TRANSITION METAL SULPHATES 
    NEVIN TURAN; ZUHAL ERGIN; MEMET SEKERCI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    n the present study, 2-[{5-((5-amino-1,3,4-thiadiazole-2-yl)methyl)-1,3,4-thiadiazole-2-ylimino}methyl]phenol (L) has been synthesized by the reaction bis(2-amino-1,3,4-thiadiazolyl)methane and salicylaldehyde. The metal ...
  • Role of Plant Growth Regulators on oil yield and biodiesel production of Linseed (Linum usitatissimum L) 
    FAIZANULLAH; ASGHARI BANO; ASIA NOSHEEN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    A field experiment was conducted to compare the effect of plant growth regulators (PGRs) viz. kinetin (K), chlorocholine chloride (CCC) and salicylic acid (SA) on seed yield, oil content and oil quality of Linseed (Linum ...
  • Toxic Chromium from Tanneries Pollute Water Resources and Soils of Sialkot (Pakistan) 
    UZAIRA RAFIQUE; ABIDA KALSOOM KHAN; AISHA ASHRAF; SADlA NASREEN; QAlSAR MAHMOOD; REHANA RASHID (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-10-20)
    The present investigation reports the concentrations of total chromium and its species i.e. chromium (Cr (III) and Cr (VI)) assessed in soil, drinking water and effluents of tanneries distributed in ten clusters of Sialkot ...

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