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Browsing Volume 32 by Title

Browsing Volume 32 by Title

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  • Lightscattering and Viscosities Measurements of Dilute Solutions of Some Schiff Base Polymers 
    ABDUL HAMID CHANNAR; KHALIDA PARVEEN MAHAR; MUHAMMAD YAR KHUHAWAR; SUBHAN MAJIDANO; MUHAMMAD SALEEM KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-04-05)
    Three Schiff base polymers polymethylene-bis(salicylaldehyde)tetramethylethlene-diimine (PMSATen), polymethylene-bis(salicylaldehyde)meso-stillbenediimine(meso-PMSAS) and poly-methylene-bis(2-hydroxyacetophenone)1,2-prop ...
  • Maclafferty Rearrangement in Germyl Derivatives of Organo-tin Carboxylates 
    MUHAMMAD AZIZ CHOUDHARY; KHAWAJA ANSAR YASIN; HABIB-UR-REHMAN; SADIQ-UR-REHMAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Bimetallic compounds of general formula [(R¹)₃GeCHR²CHR³COO]₂Sn[R⁴]₂and [R¹GeCHR²CHR³COO]Sn[CH₂C(CH₃)]₃ have been synthesized by the reported methods and were studied by mass spectrometric analysis to explore their ...
  • Mass Spectral Studies of Tetraorganotin (IV) Compounds Containing Long Chain Alkyl and Aryl Groups 
    SADIQ-UR-REHMAN; MUHAMMAD AZIZ CHOUDHARY; SAQIB ALI; MOAZZAM HUSSAIN BHATTI (Karachi: The Chemical Society of Pakistan, 2010-12-06)
    Tetraorganotin (IV) compounds having general formula R₄₋xSnR'x where R = CH₃, n-C₄H₉, C₆H₅, C₆H₅CH₅, R' = n-C₆H₁₃and x = 1 or 2, have been synthesized by the reaction of R₂SnCl₂ and R₃SnCl with appropriate amount of ...
  • Microstructural Development of Superconducting Phases in Pb-BSCCO System Derived from Sol-Gel Technique 
    AMMAD HUSSAIN QURESHI; NAZAR HUSSAIN; SHAHID KHAN DURRANI; HASSAN WAQAS; MUHAMMAD ARSHAD (Karachi: The Chemical Society of Pakistan, 2010-12-10)
    Sol-gel processing technique has been utilized to produce the gel of Pb-BSCCO system (Bi₂-xPbx Sr₂ Ca₂ Cu₃ O₁₀ ±y, where x = 0.2, 0.4, and 0.8, are the mole fraction of Pb substituted against Bi). The gel samples were ...
  • 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 ...
  • MIXED LIGAND COPPER(II) COMPLEXES OF PYRROLIDINEDITHIOCARBAMATE AND DIAMINES 
    SAEED AHMAD; MASOOD SARWAR; SAJJAD AHMAD; SAQIB ALI; KHURRAM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Copper(II) complexes of pyrrolidinedithiocarbamate (PDTC) and diamines having the general formula, [Cu(diamine)(PDTC)]Cl, [Cu(diamine)Cl₂][Cu(PDTC)Cl] or [Cu₂(di-amine)(PDTC)₂Cl₂] (diamine = 1,3-diaminopropane, ...
  • A Model for Making Field-Based Nitrogen Recommendations For Winter Wheat in Western Oregon 
    DOST MOHAMMAD BALOCH; MAQSOOD AHMED KHAN; EHSANULLAH KAKAR; MOHAMMAD AYAZ KHAN MALG HANI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-04-04)
    A model based on early spring soil and tissue analysis was developed and evaluated for predicting the need for additional nitrogen (N) fertilizer on winter wheat. To develop the model, On-farm trials were established over ...
  • 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 ...
  • Naturally Occurring Antifungal Aromatic Esters and Amides 
    MUHAMMAD SHAIQ ALI; SHAHNAZ; SOBIA TABASSUM; MUHAMMAD KASHIF PERVEZ; ISIAKA AJANI OGUNWANDE; OLADOSU ADEBAYO IBRAHIM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    During the search of antifungal natural products from terrestrial plants, a new long chained aromatic ester named grandiflorate (1) along with spatazoate (2) from Portulaca grandiflora and N-[2-methoxy-2-(4-methoxyphenyl) ...
  • 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 ...
  • Novel Ru-Complex of Methyldiphenylcyclopentadienylide 
    SYEDA ROBINA GILANI; ZAID MAHMOOD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Ylide CpPMePh₂ was synthesized by the deprotonation of Ylide salt of iodide by using different deprotonating agent like n butyl Li, NaH, (CH₃)₂N Li, isopropyl Li and ((CH₃)₃Si)₂N.Li. Out of all these deprotonating agents ...
  • 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 ...
  • On-Line Inhibition Study of Immobilised Acetylcholinesterase by Aqueous Extracts of Momordica charantia (Bitter Melon) 
    TAHSEEN GHOUS; NOSHEEN AZIZ; ALMAS ABID; AAMIR RASHEED; MAZHAR IQBAL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-12-20)
    Momordica charantia (MC) also known as bitter melon is commonly used as a folk medicine in most parts of South Asia. The role of MC in diabetes is of great importance because it lowers blood sugar and delays diabetic ...
  • Organochlorine Pesticides (OCPs) Contaminants in Sediments from Karachi Harbour, Pakistan 
    NUZHAT KHAN; JOCHEN MULLER; SHAUKAT HAYAT KHAN; SHAHID AMJAD; SHAFI NIZAMANI; MUHAMMAD IQBAL BHANGER (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Mangrove swamps, intertidal mudflats and creeks of backwaters represent main feature of Karachi harbour area. Karachi harbour sediment is under continuous influence of untreated industrial effluents and domestic waste ...
  • Phosphorus Adsorption Parameters in Relation to Soil Characteristics 
    AYAZ MEHMOOD; MOHAMMAD SALEEM AKHTAR; RIFAT HAYAT; MEHRUINSA MEMON (HEJ Research Institute of Chemistry, University of Karachi, Karachi, 2010-04-02)
    Understanding of soil phosphorus (P) adsorption chemistry is essential for evolving best fertilizer management practices aimed at enhancing fertilizer P use efficiency and environment quality. Soil chemical parameters which ...
  • Physicochemical Analysis and Biomarker Distributions in Waxy Crude Oils from the Lower Indus Basin, Pakistan 
    ABDUS SALEEM; TAHIRA FAZEELAT; MUHAMMAD ASIF (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    Lower Indus Basin, Sindh Province Pakistan, produces many small to medium petroleum reservoirs. The petroleum hydrocarbons mainly contain two types of oils, condensates (light crude oils) and waxy crude oils (higher wax ...
  • Physicochemical Analysis of Citrus sinensis, Citrus reticulata and Citrus paradisi 
    IKHTIAR KHAN; ZAFAR ALI SHAH; MUHAMMAD SAEED; HAMID ULLAH SHAH (Karachi: The Chemical Society of Pakistan, 2010-12-12)
    Three species (35 varieties) of commonly utilized citrus fruits (Citrus sinensis, Citrus reticulata and Citrus paradisi) were collected from Agricultural Research Institute Tarnab, Peshawar in December 2007. They were ...
  • Physicochemical Characterization of Groundwater in Urban Areas of Lahore, Pakistan, with Special Reference to Arsenic 
    GULRAIZ AKHTER; ZULFIQAR AHMAD; JAVED IQBAL; NAZIA SHAHEEN; MUNIR HUSSAIN SHAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-06-07)
    The current quality status of groundwater from Lahore was investigated using standard analytical methodologies. The physicochemical parameters included in the study were pH, alkalinity, electrical conductivity, TDS, hardness, ...
  • 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 ...
  • Preparation of a Novel Rechargeable Storage Battery Using Proteins for the Storage of Electricity 
    ZAHID HUSSAIN; KHAN, KHALID MOHAMMED; KHADIM HUSSAIN; SHAHNAZ PERVEEN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-12-20)
    The first rechargeable battery which is using the oxidation and reduction reactions of the protein has been prepared. The source of oxidizeable protein is the boiled kidney bean and that of the reducible protein is chickpea. ...

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