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Browsing Issue 03 by Title

Browsing Issue 03 by Title

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  • Adsorption of Gold (III) from Aqueous Solutions on Bagasse Ash 
    GHULAM HUSSAIN; M. ALI KHAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-04)
    To assess the potential of cheap biomass materials for the recovery of gold from industrial, and electroplating waste water effluents, adsorption of gold (III) from dilute solutions of hydrochloric acid on bagasse ash has ...
  • 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 ...
  • Biofouling Management in the Cooling Circuit of a Power Industry Using Electrochemical Process 
    MUHAMMAD SALEEM (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-01)
    Biofouling is one of the major issues in the power industry using seawater for cooling and other purposes. presence of biological organisms such as bacteria and algae that could foul pipes and expensive equipments need to ...
  • CATHODIC VOLTAMMETRY OF NITRATE AT CHEMICALLY ETCHED TITANIUM 
    INAM -UL- HAQUE; MUQADDAS TARIQ (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-13)
    Usefulness of titanium as cathode is emphasized; a simple and easy to employ method for etching of titanium surface for its reproducible renewal is described. Electrochemical kinetics of nitrate reduction was investigated ...
  • DETERMINATION OF TRACE ELEMENTS AND HEAVY METAL IN DIFFERENT PARTS OF RABDOSIA RUBESCENS 
    YU-XIAN YU-LI; WEI-FEI HUANG; KE YUAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-14)
    This paper is about simultaneous determining the contents of Zn, Mn, Fe, Cu, Cr, As, Cd, Pb in the leaves, stems and the whole plant of Rabdosia rubescens by establishing the methods of Microwave- Digestion and ICP-MS. The ...
  • Effect of Agitation Speed on Adsorption of Imidacloprid on Activated Carbon 
    MUHAMMAD ZAHOOR (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-02)
    The adsorptive characteristics of imidacloprid on powdered activated carbon were described. The adsorption experiments were carried out as function of time, initial concentration and agitation speed. The equilibrium data ...
  • Effect of Saturation and Micro Nutritional Status on Stability of Dietary Oils under Photooxidative Stress Condition 
    TAUFIQ AHMAD; SHAHEEN ATTA; AURANG ZEB; SAEED GUL (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-08)
    Various commercial fats were photooxidized. Objective test methods i.e., peroxide value (POV), free fatty acid (FFA), anisidine value (AV), iodine value (IV), color index, fatty acid profile radical scavenging activity ...
  • THE EFFECTS OF FREE RADICALS ON ANTIOXIDANT DEFENCE SYSTEMS AND ORGANISM IN HEMODIALYSIS PATIENTS 
    MUSTAFA YONTEM; MURAT BILGE; SULEYMAN KALELI; SEVIL KURBAN; GULPERI CELIK (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-16)
    Chronic Renal Failure (CRF) is accompanied by a variety of complications which may develop due to an increase in oxidant stress and/or a decrease in antioxidant activities. Hemodialysis (HD) is still the most prevalent ...
  • Estimation of Chromium (VI) in various body parts of Local Chicken 
    TARIQ MAHMUD; RABIA REHMAN; SAKHAWAT ALI; JAMIL ANWAR; AADIL ABBAS; MUHAMMAD FAROOQ; ADNAN ALI (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-07)
    Chicken is a common type of meat source in our food. It is fed with the feed containing small pieces of leather having Cr (VI) which persisted in it during chrome tanning process. The core purpose of present study was to ...
  • 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 ...
  • 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 ...
  • HOMOLOGY MODELING OF RING NECKED PHEASANT (PHASIANUS COLCHICUS, GALLIFORMES) MINOR HEMOGLOBIN COMPONENT 
    ROSHAN ALI; GHOSIA LUTFULLAH; ZAHID KHAN; ASHFAQ AHMAD (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-15)
    Avian hemoglobin has unique oxygen transport characteristics. The homology model of minor hemoglobin component D (HbD) of Ring Necked Pheasant (Phasianus colchicus) was predicted using the three dimensional (3D) coordinates ...
  • Nutritional Values in Aspects of Essential and Non Essential Elements in Variety of Milk Samples by AAS and FES 
    RUBINA PERWEEN; MAJID MUMTAZ; QAMARUL-HAQUE; TALAT MEHMOOD (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-03)
    Milk makes a significant contribution to the human diet through provision of macro nutrient, vitamins and minerals. The exact composition of milk varies by species to naturally or contamination. It is recognized that ...
  • Physicochemical Characteristics and Maleic Acid Adsorption Capacity of Lakhra Coal (Pakistan) 
    MUHAMMAD ISHAQ; KHALID SAEED; IMTIAZ AHMAD; MUHAMMAD SHAKIRULLAH; MUHAMMAD IQBAL KHAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-11)
    Lakhra coal was leached with various extractants/leachants such as HCl, H2O2 and KMnO4, for the generation of porosity as well active site for the removal of maleic acid from aqueous solution. The physicochemical analyses ...
  • POTENTIALITY OF LEMON PEEL AS LOW COST ADSORBENT FOR THE REMOVAL OF TRYPAN BLUE DYE FROM AQUEOUS SOLUTION 
    SHEHLA HAMID; ZAID MEHMOOD; MUHAMMAD IMRAN; ASMA SAEED; SYEDA ROBINA GILLANI (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-12)
    Lemon peel (LP) was studied as a prospective adsorbent for the removal various dyes from aqueous solution using batch technique. Lemon Peel showed maximum removal of trypan blue 89.47% followed by methylene blue 85.37%, ...
  • 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 ...
  • 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 ...
  • Spectrophotometric Assay of Clorazepate Dipotassium in Dosage Forms 
    AMINA MUMTAZ; ASRAR AHMED KAZI*; Rabia NAZIR; M. USMAN. SABRI; M. NAEEM. SHAHID (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-09)
    A new spectrophotometric method for the determination of clorazepate dipotassium in pure form and in pharmaceutical preparation has been developed. The method is based on the complex formation due to charge transfer between ...
  • Spectrophotometric Determination of pKa’s of 1-Hydroxybenzotriazole and Oxime Derivatives in 95% Acetonitrile-Water 
    MAGDA FOUAD FATHALLA; SHERINE NABIL KHATTAB (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-05)
    1-hydroxybenzotriazole derivatives are used with carbodiimide as additives to generate active esters during peptide bond formation. They are also used as additives during the peptide bond formation. Dissociation constants ...
  • 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 ...

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