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Browsing Issue 01 by Title

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  • 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 ...
  • 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 ...
  • 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 ...
  • Characterization of Amorphous Silica Obtained from KMn04 Treated Rice Husk 
    JAVED, SYED HASSAN; SHAHID NAVEED; NAVEED RAMZAN; NADEEM FEROZE; MUHAMMAD ZAFAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Rice husk (RH) is available in large quantities in many rice producing areas of Pakistan. The use of rice husk as a fuel in heat generating systems adds to environmental pollution. Rice husk contains approximately 20 % ...
  • Cinerascenone, A New Flavonoid from Vernonia cinerascens 
    IRSHAD AHMAD; BASHIR AHMAD, CHAUDHARY; KHALID HUSSAIN, JANBAZ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Cinerascenone 1 [7-{(4-hydroxybenzoyl)chrysoeriol}] a new flavonoid along with quercetin and 3'-methylquercetin have been isolated from the methanolic extract of the aerial parts of Vernonia cinerascens. The structures ...
  • The Determination of Metal Accumulation in Firethorn (Pyracantha Coccinea M. Roemer) Leaves in Eskisehir (Turkey) 
    ARZU CICEK (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    In this study, firethorn plant (Pyracantha coccinea M. Roemer), a prevalent shrub in Eskisehir (Turkey) city, was used to monitor the influence of metal pollution caused by traffic. Samples were collected in the fall and ...
  • Development and Validation of Reversed-Phase High Performance Liquid Chromatographic Method for Analysis of Cephradine in Human Plasma Samples 
    MAHMOOD AHMAD; MUHAMMAD USMAN; ASADULLAH MADNI; NAVEED AKHTAR; NAYAB KHALID; WAHEED ASGHAR; SATTAR BAKHSH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    An HPLC method with high precision, accuracy and selectivity was developed and validated for the assessment of cephradine in human plasma samples. The extraction procedure was simple and accurate with single step followed ...
  • Different Techniques Recently Used For the Treatment of Textile Dyeing Effluents: A Review 
    ATIF LATIF; SOHAIL NOOR; QAZI MUHAMMAD, SHARIF; MUHAMMAD NAJEEBULLAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    ndustrial textile processing comprises the operation of pretreatment, dyeing printing and finishing. These production processes produce a substantial amount of chemical pollution. Textile finishing’s wastewater, especially ...
  • 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 ...
  • 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 ...
  • Elemental Composition of Some Arid Environment Fodder and Medicinal Plants of Quetta, Balochistan 
    ZAIDI, MUDASSIR ASRAR; GHAZALA SHAHEEN; NUSRAT JEHAN; ARSALA MANSOOR; ASMA YOUSAFZAI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Six important herbs and shrubs of Quetta valley, commonly known for their medicinal and fodder values, were analyzed for their nutritional values. These plants included Conyza canadensis Bory ex DC. (Asteraceae), Ferula ...
  • Extraction Efficiency of Water, Ethanol and Supercritical Carbon Dioxide for Amide Content from Fruit of Piper sarmentosum using Colorimetry and High Performance Liquid Chromatography 
    KHALID HUSSAIN; ZHARI ISMAIL; AMIRIN SADIKUN; PAZILAH IBRAHIM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Extraction is important for both natural product research and preparation of extracts to be used as raw materials for phytopharmaceuticals. Selection of a suitable solvent as well as type of extraction is prerequisite to ...
  • 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 ...
  • Mineral Composition of Date Palm Fruit and Pit by Atomic Absorption Spectrophotometry 
    IMDADULLAH MOHAMMAD; IZIARAT SHAH; HAMAYUN KHAN; IHSANULLAH; HIZBULLAH KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    The mineral composition of date palm available in Peshawar, Pakistan has not been reported previously. The current study was therefore, undertaken to investigate the minerals composition of date palm fruit and pit. The ...
  • Possible Effects of Cultivated Plants in the Development of Allergy in Population of Sindh, Pakistan 
    MUHAMMAD ANWAR, WAQAR; MUNEEBA KHAN; ASMA SALEEM; SYED MUHAMMAD, HASNAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    Among the various biological particles, pollen grains and fungal spores stand as the two major factors that can cause asthma and allergic rhinitis. Pollen grains can be released by the domestic plants cultivated in and ...
  • 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 ...
  • Solvent-Mediated Effects in NMR Spectra of 2-FormyI Phenoxyacetic AcidChromatographic Evidence for Internal Cyclisation and Tautomerization 
    AMJID IQBAL; HAMID LATIF; ASHRAF, CHAUDHRY MUHAMMAD; NAVEED AHMAD; QAZI, JAVED IQBAL; WEAVER, GEORGE WILLIAM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    The chromatographic analyses reveal that formylphenoxy acetic acid in methanol undergoes autocyclization to afford its cyclic hemiacetal, which slowly transforms into its enolic tautomer and develops equilibrium between ...
  • Study of High-Performance Liquid Chromatogramphy Fingerprint for Traditional Chinese Medicine Yigongningxue Oral Liquid 
    CHAO FENG; JIN-LAN, RUAN; YA-LING, CAI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    A simple, reliable and accurate fingerprinting method has been developed for quality control of YiGongNingXue oral liquid. The separation was done by reverse phase chromatography using Zorbax eclipse XDB C18 column ...
  • Study on Some Macronutrients Composition in Peels of Different Citrus Fruits Grown in NWFP 
    JAVED ALI; HAMIDA ABID; ARSHAD HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-02-20)
    The study was undertaken to evaluate the nutritional significance of four varieties of citrus fruits peel such as sour orange, sweet orange, lemon and grapefruit. The peels were dehydrated, grinded by using hammer mill ...

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