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Browsing Issue 04 by Issue Date

Browsing Issue 04 by Issue Date

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  • PROPERTY OF NOVEL SODIUM ION EXCHANGER LI₁.₄CR₀.₂AL₀.₂TI₁.₆(PO₄)₃ 
    JIAN- ZHI SUN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-04)
    A novel sodium specific kind of ion exchanger LI₁.₄CR₀.₂AL₀.₂TI₁.₆(PO₄)₃ fabricated by a solid-state reaction method. The microstructure XRD, FTIR, Raman spectra, adsorption performances were investigated. The average grain ...
  • Effect of "Oxygen and Carbon-dioxide" on the Post-Harvest Management in Tree-Ripe Mango Storage 
    HAMEED ULLAH; SAEED AHMAD; THOMPSON, ANTHONY KEITH; RAHEEL ANWAR; NOOR-UN-NISA MEMON; MUHAMMAD NAFEES (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    There is an increasing niche market demand for tree-ripe mango fruit due to their pleasant level of sweetness and flavour than artificially ripened fruits. However, tree-ripe mango fruits normally have a short storage ...
  • Purification and Characterization of Alkaline Proteases from Aspergillus terreus 
    AHSAN HUSSAIN; ABDUL MANNAN; HASSAN ZUBAIR; BUSHRA MIRZA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Proteases belong to an important class of enzymes known as hydrolases and catalyze hydrolysis of proteins. They act primarily to degrade proteins that are used for energy production and as biosynthetic precursors. In the ...
  • SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL STUDIES OF 2-(4-NITROPHENYLAMINO-CARBONYL)BENZOIC ACID AND ITS COMPLEXES WITH CR(III), CO(II), NI(II), CU(II) AND ZN(II) 
    MUHAMMAD IMRAN; SUMAIRA NAZIR; SHOOMAILA LATIF; ZAID MAHMOOD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Cr(III), Co(II), Ni(II), Cu(II) and Zn(II) complexes of 2-(4-Nitrophenylaminocarbo-nyl)benzoic acid were synthesized and characterized on the basis of physical, analytical and spectroscopic data. The ligands, as well as ...
  • Compettition of Aluminium on Iron Binding Site in the Biological System 
    FOUZIA SULTANA REHMANI; ABDULAHAD SHAFIQUE; ASADULLAH SHAFIQUE; SHERAZ AHMAD KHAN; SABAHAT AMBREEN; MUHAMMAD INAM-UL-HAQ; MUHAMMAD RASHID; SYED SAMMAR ABBAS (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Aluminum toxicity has been recognized in many ways, when exposure to heavy metals is prolonged, renal function is limited or a previously accumulated bone burden is released in stress and illness. Aluminum is generally ...
  • Evaluation of Nitrogen Uptake Patterns in Spring and Winter Wheat in Western Oregon 
    DOST MOHAMMAD BALOCH; MAQSOOD AHMED KHAN; EHSANULLAH KAKAR; MOHAMMAD AYAZ KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    An understanding of the ground nitrogen (N) uptake pattern for wheat (Triticum aestivum L.) is essential to facilitate nitrogen management. The purpose of this study was to determine the nitrogen uptake pattern of spring ...
  • SYNTHESIS OF ETHYL-4,6-DIHYDROXY-2-OXO-1-PHENYL-5-ARYLAZOPYRIDINE-3-CARBOXYLATE, PART (IV): NEW DISPERSE DYES 
    KHAN, KHALID MOHAMMED; MAHWISH; ABDUL JABBAR; SHAHNAZ PARVEEN; RASHEEDA PARVEEN; SYED MOAZZAM HAIDER (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The reaction of ethyl-4,6-dihydroxy-2-oxo-1-phenyl pyridine-3-carboxylate (3) with different diazotized substituted aromatic amine (2) yielded compound ethyl-4,6-dihydroxy-2-oxo-1-phenyl-5-arylazopyridine-3-carboxylate (4) ...
  • ANTIBACTERIAL, ANTIMALARIAL AND LEISHMANICIDAL ACTIVITIES OF CU (II) AND NICKEL (II) COMPLEXES OF DICLOFENAC SODIUM 
    FAZAL-UR-REHMAN; MUHAMMAD FARID KHAN; INAM ULLAH KHAN MARWAT; GUL MAJID KHAN; HAROON KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Metal complexes are famous for a wide array of chemotherapeutic effects. The current study was designed to synthesize and evaluate unexplored chemotherapeutic effects of Cu (II) and Nickel (II) complexes of the non-steroidal ...
  • Thermodynamics and Kinetics of Adsorption of Dyes from Aqueous Media onto Alumina 
    IQBAL, MUHAMMAD JAVED; ASHIQ, MUHAMMAD NAEEM (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    Use of alumina for the removal of industrially important dyes namely, methylene blue, methyl blue, bromophenol blue, malachite green, eriochrome black-T, phenol red and methyl violet from aqueous media at different shaking ...
  • ADSORPTION OF CADMIUM (II) BY CHITIN 
    CHUNHUA XIONG (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The feasibility of using chitin as an adsorbent for cadmium (II) was examined. The adsorption characteristics were studied as a function of solution pH, temperature, contact time et. al., Maximum uptake amount of cadmium ...
  • 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, ...
  • Chemical Activation of Bagasse Ash in Cementitious System and its Impact on Strength Development 
    NOOR-UL-AMIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The production of bagasse ash from sugar mills in a great quantity has become one of the environmental problem, but its use in cement mortar that provided a satisfactory solution to problems that associated with waste ...
  • Analysis of Toxic Heavy Metals in Branded Pakistani Herbal Products 
    MUHAMMAD SAEED; NAVEED MUHAMMAD; HAROON KHAN; SAEED AHMAD KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The present study was designed to estimate the concentration of heavy toxic metals in Pakistani herbal products frequently used for the treatment of various ailments. For this purpose, twenty five herbal products of well ...
  • 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 ...
  • 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 ...
  • Preparation of High Exhaust Chrome from Leather Shavings and Hydrocarbons with its Application in Leather Processing for Green Tanning Technology 
    HAFIZ RUB NAWAZ; BARKAT ALI SOLANGI; UZMA NADEEM; BEENA ZEHRA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The use of chrome in tanning has made the remarkable advances to achieve the best quality and quantity of leather. But the chrome tanning process is associated with the generation of heavy metal containing solid wastes and ...
  • 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 ...
  • Spectrophotometric Method for Quantification of Fenoxaprop-p-ethyl Herbicide in Commercial Formulations and Agricultural Samples 
    JASMIN SHAH; MUHAMMAD RASUL JAN; FARHAT-UN-NISA SHEHZAD; MIAN MUHAMMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    A simple spectrophotometric method was developed for determination of fenoxaprop-p-ethyl herbicide in agricultural samples. The method is based on the acid hydrolysis of fenoxaprop-p-ethyl to form 6-chloro-2,3-dihydroben ...
  • 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) ...
  • Studies on the Preparation of Sea buckthorn (Hippophae rhamnoides L.) Powder I)rink and Its Nutritional Evaluation 
    ARSHAD HUSSAIN; JAVED ALI; SHAFQAT ULLAH; HAMIDA ABID (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2010-08-20)
    The pulp of sea buckthorn (Hippophae rhamnoides L) fruit was processed to obtain different concentrations (11.8°, 33°, 66° & 75° brix) used for the preparation of sea buckthorn powder drinks. Various parameters of the ...

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