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Browsing Issue 06 by Title

Browsing Issue 06 by Title

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  • Advances in the Development of Methane Bromination 
    HAROON UR RASHID; KAICHAO YU; JINLAN ZHOU (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The bromination reactions of Methane were studied and majority of the work done so far was outlined, as these reactions have gained immense importance for years in the industrial sector. Thermodynamically, Bromine (Br) is ...
  • allo-Imperatorin: A Potent Urease Inhibitor from Fresh Unripe Fruits of Aegle marmelos (Rutaceae) 
    ALI, MUHAMMAD SHAIQ; GHAFOOR AHMED; PERVEZ, MUHAMMAD KASHIF; MEHREEN LATEEF; NIGHAT AFZA; LUBNA IQBAL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    During the search for bioactive constituents from different parts of Aegle marmelos (Rutaceae), the ethanol soluble portion of fresh unripe fruits yielded two known amides named aegeline (1) and 2-O-methyl aegeline (2), ...
  • Assessment of Concentration of Lead, Cadmium, Chromium and Selenium in Blood Serum of Cancer and Diabetic Patients of Pakistan 
    MUHAMMAD SALMAN; RABIA REHMAN; TARIQ MAHMUD; WAHEED-UZ-ZAMAN; UMER SHAFIQUE; JAMIL ANWAR; ALI, SANA ZULFIQAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Heavy metals have specific role in the progression of diseases. The aim of this study was to investigate the level of toxic elements, i.e. lead, cadmium, chromium and selenium in blood serum of type 1 diabetes mellitus and ...
  • Assessment of Pesticide Residues on Selected Vegetables of Pakistan 
    KHAN, MUHAMMAD SAQIB; SHAH, MOHAMMAD MAROOF; QAISAR MAHMOOD; AMJAD HASSAN; KEHKASHAN AKBAR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The present study was conducted to determine the pesticide residues on selected summer vegetables. Five vegetables were grown with three replicates in a split plot randomized complete block design. Pesticides were sprayed ...
  • Atom Transfer Radical Copolymerization of Phenoxycarbonylmethyl Methacrylate with Methylmethacrylate: Their Monomer Reactivity Ratios and Thermal Stabilities 
    NEVİN ÇANKAYA; KADİR DEMİRELLİ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The atom transfer radical polymerization of phenoxycarbonylmethyl methacrylate (PCMMA) and its atom transfer radical copolymerization (ATRP) with methyl methacrylate (MMA) were performed in bulk at 110 °C in the presence ...
  • Camel Liver Acid Phosphatases: Purificaion and Properties 
    MEHRIN SHERAZI; RUBINA NAZ; ASMA SAEED; AISHA SIDDIQUA; SHAZIA AMEEN; AHMAD SAEED (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Three acid phosphatases were identified from the liver of a camel. Of these, two high molecular weight acid phosphatase forms were isolated and purified by successive chromatography on SP-Sephadex C-50, Sephadex G-75, ...
  • Chitosan Nanoparticles as Drug Delivery Carriers for Biomedical Engineering 
    LU-E SHI; GUO, XIAO-FENG; FANG, XIU-JUAN; ZHAO, LI-MING; LIANG, YING XING; MIN CHEN; TANG, ZHEN-XING; ZHU, DONG-SHENG (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Chitosan is a rather abundant material, which has been widely used in food industrial and bioengieering aspects, including in encapsulating active food ingredients, in enzyme immobilization, and as a carrier for drug ...
  • Comparison of the Catalytic Activity of the Commercially Available Clays for the Conversion of Waste Polyethylene into Fuel Products 
    M. RASUL, JAN; JASMIN SHAH; KHADIM HUSSAIN; SHAHNAZ PERVEEN; KHAN, KHALID MOHAMMED; ZAHID HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The use of clays as catalyst for the cracking of polyethylene was investigated and commercially available clays like China clay, Fuller’s earth and French chalk were used to convert polyethylene into fuel oil and fuel gas ...
  • Concentration of Residual Copper in the Bitter Gourd Samples Available in Punjab-Pakistan 
    ATHER, ABDUL QAYYUM; SABRI, MUHAMMAD USMAN; PHOOL SHAHZADI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Copper is very common substance that occurs naturally in the environment and spread through natural phenomena. Human widely use copper. In agriculture copper sulfate is used as a pesticide and fertilizer. The trade ...
  • Development of an HPLC Fingerprint for Quality Control of Genkwa flos 
    XIA, LIN-BO; QIAN DONG; JIA, TIAN-ZHU; GUO, YAN-HUA; DENG, SHI-REN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Genkwa flos is a widely used herbal plant with great medical value in traditional Chinese medicine. For identification and effective quality control of Genkwa flos, a chemical pattern expressed by high performance liquid ...
  • The Effect of Cadmium and Chromium Concentration, on Biological Activity of Marsilea minuta 
    ZAHID HUSSAIN; KHAN, KHALID MOHAMMED; SHAHNAZ PERVEEN; NIDA AMBREEN; WAJID UR RAHMAN; ATA ULLAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Antibacterial activity of the Marsilea minuta was investigated that was collected from four different places of the same stream. The activities were correlated with the chromium and cadmium ions contents of the stream. ...
  • Effect of Solid Waste on Heavy Metal Composition of Soil and Water at Nathiagali-Abbottabad 
    MUHAMMAD IRSHAD; NOREEN MALIK; TARIQ KHAN; FARIDULLAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    This experiment concluded that the waste material produced tangible impacts on soil and water system of Nathiagali. The dumping of waste resulted in a marked increase in the concentration of metals in soils and the measured ...
  • Effect of UHT Processing and Storage Conditions on Physico-chemical Characteristics of Buffalo Skim Milk 
    IMTIAZ HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The obtained results indicated that physico-chemical and nutritional changes in UHT processed buffalo skimmed milk were more pronounced at 45°C than 25°C and 10°C. Duration of storage adversely affected the chemical and ...
  • Evaluation of Antioxidant Potential of Citrus Peel Extracts 
    CHATHA, SHAHZAD ALI SHAHID; ABDULLAH IJAZ HUSSAIN; ASI, MUHAMMAD RAFIQUE; MUDASIR MAJEED; NASIR IQBAL, HAFIZ MUHAMMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    The antioxidant potential of different solvent extracts of three different locally grown citrus varieties; grape fruit, lemon and mussambi, was assessed using some antioxidant assays like estimation of total phenolic ...
  • Evaluation of Batch Biosorption of Chromium (VI) from Aqueous Solution by Chemically Modified Polyalthia longifolia Leaves 
    RABIA REHMAN; JAMIL ANWAR; TARIQ MAHMUD; MUHAMMAD SALMAN; MARIA SALEEM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Removal of toxic metals from surface water is a significant matter of concern. Biosorption is emerging as an economical and ecofriendly methodology for the removal of toxic chemicals from waste water. Optimization of ...
  • Gasification Characteristics of Auto Shredder Residue 
    SHAHID NAVEED; NAVEED RAMZAN; ABDULLAH MALIK; MUHAMMAD AKRAM; ROSKILLY AP (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Given the large volume of used tyre waste generated each year it is imperative that suitable re-use and disposal techniques are developed for dealing with this problem; presently these include rethreading, reprocessing for ...
  • Historical Development of Magnetite Nanoparticles Synthesis 
    KHAN, UMAR SAEED; KHATTAK, NAZIR SHAH; AMINUR RAHMAN; FARIDULLAH KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Top down and bottom up are two fundamental routes for the formation of magnetite nanoparticles (MNPs). These routes are generally utilized for producing technologically and economically significant MNPs. This review discusses ...
  • INFLUENCE OF TERRAIN ON PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITIES OF CABERNET SAUVIGNON WINES IN LOESS PLATEAU REGION OF CHINA 
    Bao Jiang; Zhang, Zhen-Wen; Zhang, Xiao-Zuhan (Karachi: Journal of the Chemical Society Of Pakistan., 2011-12-20)
    Two vineyards with different terrains (site A: 1280 m versus site B: 909 m) in Xiangning County of Shanxi Province located in Loess Plateau region were chosen to study phenolic compounds and antioxidant activities of ...
  • Intercomparison Exercises; A Requirement for Accurate and Precise Analytical Data 
    NAILA SIDDIQUE; S. WAHEED (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    External evaluation of laboratory results and procedures can be carried out by participation in intercomparison exercises. The results of the International Atomic Energy Agency - Marine Environmental Laboratory (IAEA-MEL), ...
  • Localization of Streptolysin S (SLS) by Blood Agar Overlay Technique (Zymogram) 
    BADARUDDIN A. MEMON (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Streptolysin S (SLS) is the non-antigenic, oxygen-insensitive cytolysin which is produced by Group A streptococci. It is largely responsible for a zone of beta-haemolysis surrounding colonies on blood agar media. In this ...

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