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Browsing Volume 22 by Title

Browsing Volume 22 by Title

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  • 4+4-methoxybenzoy1)-54-4-methoxypheny1)-2,3-dihydro-2,3-furandione, its Synthesis, Thermolysis and Diels-Alder Reactions with Schiff Bases: Experimental Data and Calculations 
    SARIPINAR, EMIN; GOZEL, YAHYA; ONAL, ZOLSIYE; ILHAN, ILHAN OZER; AKcAMUR, YUNUS (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-05)
    p,p'-Dimethoxydibenzoylmethane 1 combines with oxalyl chloride 2 to yield novel furan-2,3-dione 3. Thermal transformation is supposed to occur by the ring opening of the 3 followed by the intermediate p,p'-dimethoxydibenzoylketene ...
  • Antifungal Activities and Essential Oil Constituents of Some Spices from Pakistan 
    ATTA-UR-RAHMAN; M. IQBAL CHOUDHARY; AFGAN FAROOQ; AFTAB AHMED; M.ZAFAR IQBAL; BETUL DEMIRCI; FATIH DEMIRCI; K. HUSNU CAN BASER (The Chemical Society Of Pakistan, 2000-03-13)
    Hydrodistillation of Amomum subulatum, Cinnamomum verum, Coriandrum sativum, Cuminum cyminum, Elettaria cardamomum, Myristicafragrans (Mace), and Myristica fragrans (Nutmeg) purchased from local markets yielded essential ...
  • Capillary Gas Chromatographic Determination of Vanadium in Rock Samples Using Bis (Acetylpivalylmethane) Ethylenediimine as Completing Agent 
    M.Y. KHUHAWAR; ASHFAQUE A. MEMON; M.I. BHANGER (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-05)
    A capillary gas chomatographic method has boar developed for the determination of vanadium from rock samples. It is based on complexation of analyte by bis (acetylpivalylmethane) ethylanediimine (H(2)APM(2)en) followed by ...
  • Chemical Analysis of Albizzia lebbeck 
    SHAHINA WAHEED; BUSHRA KHALID; C.M.ASHRAF (The Chemical Society Of Pakistan, 2000-03-12)
    The purified lipid fraction (4.12% on the dry weight basis) from the seeds of Albizzia lebbeck was found to be 87.76% neutral and 12.24 % polar lipids. The whole oil lipid contained 64.76% unsaturated and 34.99%10 saturated ...
  • Cholesterol Metabolism in Asterias Rubens 
    A. SATTAR KHAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-09-12)
    [41-14C] choleslerol, (26J4C) cholesterol and (2-J4C) acetic acid were employed to study cholesterol metabolism in A. rubens,. With (4J4C) cholesterol highest radioactivity was found in free sterols (71 %) and steryl ...
  • Commercial Extraction of Gel from Aloe vera (L) Leaves 
    NUSRAT SHAFI; LAJBER KHAN; GUL AKHTAR KHAN (The Chemical Society Of Pakistan, 2000-03-10)
    A commercially viable process for preparing a stable and pharmacologically active crystalline substance from the fresh whole leaf meal has been developed. Dermatological testings of the product on experimental animals and ...
  • Detection and Removal of Copper from the Industrial Effluents 
    KHAN, KAMIN; A. RAHMAN; M.AKIF; M.RIAZ; MUHAMMAD ALI QAISER (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-04)
    A bench scale hydrometallurgical method is proposed for the detection nd removal of copper from the effluents discharged by various industries into Kabul Rivet. The conditions, rob as, effect of cid concentration temperature ...
  • Determination of Dissociation Constants and Thermodynamic Parameters of 8-Aminoquinoline by Potentiometry in Aqueous and Mixed Organic-Water Solvent Systems 
    HAFIZ A. BARI INDHAR; A. W. K. KHANZADA (The Chemical Society Of Pakistan, 2000-03-01)
    The dissociation constant (pKa) and thermodynamic parameters (△G) of 8-­aminoquinoline are determined in aqueous and in mixed organic-water (dioxane, EtOH and MeOH) solvent systems. It is observed that ionization constant ...
  • Determination of Microamount of Carbon in Selected Samples of Iron, Steels, Ferro-Alloys and Metal Powder 
    JAVED AKHTAR; SHAHID KHAN DURRANI; N.A. CHUGHTAI (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-09-05)
    The influence of non-meta1lic components such as nitrogen, hydrogen and carbon has significant effect on the microstructure and ultimately on the mechanical properties of iron steels and ferro-alloy products. For the ...
  • Determination of Physico-Chemical Properties and Heavy Metals in The Effluents of Match Industries of Hayat Abad Industrial Estate, N.W.F.P 
    JASMIN SHAH; M.RASUL JAN; NOORUL ISLAM; M. REHMAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-09)
    Effluent samples were collected at different intervals from match industries located at Hayat Abad Industrial Estate. These samples were analyzed for their physico-chemical properties and selected toxic metals suspected ...
  • Determination of Physico-Chemical Properties and Heavy Metals in The Effluents of Match Industries of Hayat Abad Industrial Estate, N.W.F.P 
    JASMIN SHAH; M.RASUL JAN; NOORUL ISLAM; M. REHMAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-05)
    Effluent samples were collected at different intervals from match industries located at Hayat Abad Industrial Estate. These samples were analyzed for their physico-chemical properties and selected toxic metals suspected ...
  • Extraction and Spectrophotometric Determination of Molybdenum and Iron in the Thiocyanate System 
    SAEED-UR-REHAMN; SHABNAM YAMIN; KHAN, KAMIN (Karachi: Journal of chemical society of Pakistan, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-09-02)
  • Hydrolysis of Methyl Formate in Aqueous Solutions And The Evaluation of Rate Constants 
    SHAKILA BEGUM; M.AURANG ZEB; NAEEM PIRZADA (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-03)
    Emphasis has been placed on the data for the hydrolysis of methyl formate in neutral medium ova the temperature range 293-343 K to illustrate the method, employing numerical integration and the criteria of least squares ...
  • Impact of Surface Functional Groups on The Adsorption of Aliphatic Organic Acids from Aqueous Solutions on Granular Activated Charcoal 
    YOUSAF IQBAL; SULTAN ALAM; MOHAMMAD ISHAQ (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-07)
    Adsorption of aliphatic organic acid, such ar Formic, Acetic, Propionic and n-Butyric acids fi om aqueous solutions on the surface of granular activated charcoal was studied as a function of stirring time, concentration ...
  • Investigation of Pollutants in the Industrial Effluents 
    YOUSUF IQBAL; SULTAN ALAM; SHOMAILA SABIR; M. ISHAQ; NISAR AHMAD (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-01)
    Industrial effluents collected from different industries of I-9 sector Islamabad were examined for different physical parameters such as pH, SS, TDS, DS, DO and GOD. Various anions such as Cl-1, SO4--2NO3-1, NO2-1 and ...
  • IR and 111-NMR Investigations for Molecular Interactions between Methyl Methacrylate and Methylcyanoacetate 
    MIR MUNSIF ALI TALPUR; A. KAIM; T. PIRZADA; T. KASPRZYCKA-GUTTMAN (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-09-08)
    The molecular interaction between. methyl methacrylate (MMA) and methylcyanoacetate (MCA) has been studied. The IR results show a lower electron density for vinyl as well as for the carbonyl double bond of methyl ...
  • Levels of Cr, Cu, Fe, Pb and Zn in Water-based Paints Manufactured in Pakistan 
    M. IKRAM; M.A. RAUF; M. JAFFAR; N. BUKHARI (The Chemical Society Of Pakistan, 2000-03-02)
    The levels of four selected toxic elements; namely, chromium, copper, iron and zinc in various brands of water-based paints manufactured in Pakistan are reported. The analysis was done using the Flame Atomic Absorption ...
  • Lightweight Characteristics of the Naka Pabni Shale in Pakistan 
    KHAN, HAMID ULLAH; KHAN, SHAH ALAM (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-12-02)
    An investigation into bloatable raw material comprising of shale, suitable for use in making lightweight aggregate has been mode to exist in large quantities in the region of Naka Pabni located in Kirthar province to the ...
  • Measurements of Photochemical Oxidants at Sindh Industrial Trading Estate of Karachi, Pakistan 
    A.H.K. YOUSUFZAI; DURDANA RAIS HASHMI; ISHAQ QAIM KHANI (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2000-09-07)
    Continuous measurement of nitrogen oxides (NO and NOx) and ozone (03) were carried out by Air Pollution Monitoring Mobile Laboratory at a sampling lite located in the Sindh Industrial Trading Estate (SITE) of Karachi. The ...
  • NEW CATALYST FOR INTRAMOLECULAR CYCLOPROPANATION REACTION 
    A.YASMIN; R.JAFRI; A.MALIK (The Chemical Society Of Pakistan, 2000-03-16)
    The catalytic activity of N,N-ethylenebis (salicylideneaminato) copper (II) during intramolecular cyclopropanation of unsaturated α-diazo-β-ketoester has been studied. The resulting bicyclic intermediate is the precursor ...

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