DSpace Home
→
MoST Organizations
→
Pakistan Science Foundation
→
Pakistan Science Foundation
→
PSF Research Support (Scientific Research Journals)
→
Journal of the Chemical Society of Pakistan
→
Volume 34
→
Browsing Volume 34 by Issue Date

Browsing Volume 34 by Issue Date

Now showing items 1-20 of 47

Effect of Oleic Acid on the Permeation Kinetics of Diclofenac Diethylamine

SYED NISAR HUSSAIN SHAH; MUHAMMAD SALMAN; MASHOOD AHMAD; MAHBOOB RABBAN; AMIR BADSHAH (Karachi: The Chemical Society of Pakistan, 2012-02-01)

In vitro permeation studies were done using modified Franz diffusion cell through rabbit skin and silicone membrane utilizing different ratios of oleic acid with diclofenac diethylamine (DDA) in normal saline and methanol ...
Development of Sensor Calibration against Standards using Measurement Software TestPointTM-CEC and Application to the Verification of pH Electrodes

MUHAMMAD FARRAKH NAWAZ; GUILHEM BOURRIÉ (Karachi: The Chemical Society of Pakistan, 2012-02-02)

The acquisition, processing and presentation of data from many commercial devices have been simplified by use of personal computers (PCs) and effective software in last decades. As compared to text-based languages, such ...
Synthesis and Antibacterial Activity of Oxime Ester Derivatives Containing 16-isopropyl-5,9-dimethyl tetracyclo [10.2.2.01,10.04,9] hexadec-15-ene-5,14- Dicarboxyl Group

JIAN LI; XIAOPING RAO; SHIBIN SHANG; YANQING GAO; BINGLEI SONG (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-03-07)

Acrylpimaric acid (16-isopropyl-5,9- dimethyltetracyclo [10. 2. 2. 01,10.04,9]hexa- dec-15-ene-5,14-dicarboxylic acid) was prepared by rosin through Diels-Alder addition reaction, then a series of oxime ester derivatives ...
Accumulation of Pesticide Residues by Shrimp, Fish and Brine Shrimp During Pond Culture at Ghorabari (District Thatta)

RAZIA SULTANA; WAJEEHA ALI; F. AMEER; ALIA BANO MUNSHI; M. NASIR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Residual level of persistent organochlorines (OC) such as ∑HCH (α–HCH, β–HCH, γ– HCH, δ–HCH, ∑DDT (o,p'-DDD, op-DDE, p,p-DDE pp–DDD, pp'-DDT, o,p'-DDT), dieldrin and endrin were measured in a number of water samples from ...
Use of Tio2 as Catalyst in Degradation Induced with Gamma Radiation of Methylene Blue

GABRIELA G. CANO; ALMA MARTINEZ HERNANDEZ; JAIME JIMENEZ BECERRIL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Heterogeneous radiocatalysis is a catalytic process promoted by the direct adsorption of high radiant energy capable of activating a semiconductor such as TiO₂, which generates free radicals very reactive at the surface ...
Effect of Heat Treatment on the Structural Characteristics and Dehydroxylation Kinetics of the Tunellite

MUGE SARI YILMAZ; SABRIYE PISKIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

The effect of heat treatment on the structural properties of the tunellite has been investigated in the present study. The tunellite samples were calcined in a furnace for 5 h at three different temperatures, 400, 710, and ...
Spectrophotometric Determination of Diazepam

WASEEM ASGHAR KHAN; NARJIS NAZ; NAVEED ASLAM DOGER; NAEEM ASGHAR KHAN; NADEEM ASGHAR KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Diazepam reacts with ninhydrin at pH range 12-12.5 to give a violet color having maximum absorbance at 530 nm wavelength. The reaction is specific for diazepam and provides a basis for its spectrophotometric determination. ...
Quality Evaluation and Safety Assessment of Different Cooking Oils Available in Pakistan

TAHIR MEHMOOD; ASIF AHMAD; ANWAAR AHMED; NAUMAN KHALID (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)
Physico-Mechanical Studies of Natural Rubber/Carbon Black Vulcanizates Containing Reclaim Rubber

KHALIL AHMED; NUDRAT ZAHID RAZA; KHAULA SHIRIN; KHALID MAHMOOD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Locally available reclaim rubber (RR) was used in this study. It was characterized in terms of its oil soluble parts by acetone extract, rubber identified by pyrolysis and FT-IR, carbon black from TGA and ash content by ...
Ultrasonically Assisted Extraction and HPLC Determination of Chondroitin Sulfate from Fish Heads

CHUN LIN KE; XIAO XIONG ZENG (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

In the present study, we investigated the ultrasonically assisted extraction(UAE) and high-performance liquid chromatography (HPLC) determination of chondroitin sulfate(CS) from fish heads. Firstly, the optimized parameters ...
Antibacterial Activity of Vacuum Liquid Chromatography (VLC) Isolated Fractions of Chloroform Extracts of Seeds of Achyranthes Aspera

NOOR-UL-AMIN; M. IMRAN QADIR; TAHIR JAVED KHAN; GHULAM ABBAS; BASHIR AHMAD; KHALID HUSSAIN JANBAZ; MUHAMMAD ALI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Antibacterial activities of locally occurring weed Achyranthes aspera were studied. Three solvents (Hexane, Chloroform, and Ethanol) were used successively for the extraction of active principles from the seeds of this ...
Effect of Ce Substitution on Structural and Electrical Properties of W-type Strontium Hexaferrite Nanomaterials

IMRAN KHAN; MUHAMMAD NAEEM ASHIQ; IMRAN SADIQ; ASHEAQ MAHMOOD QURESHI; MAZHAR URANA (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

A series of W-type hexaferrites having composition Sr₃CexFe₁₆xO₂₇(x = 0.00, 0.02, 0.04, 0.06) has been prepared by the chemical co-precipitation method. The effect of cerium substitution at Fe site on the structural and ...
Synthesis Route and Characterization of Hydroxyapatite Powder Prepared from Waste Egg Shells

FARZANA HABIB; SHAHZAD ALAM; NASEEM ZAHRA; MUHAMMAD IRFAN; WAQAS IQBAL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

A novel route is reported to prepare Hydroxyapatite powder (HAp) from egg shells. Eggshells were used as calcium precursor containing 94-97 % CaCO₃. HAp was synthesized by reacting calcined egg shell powder with reagent ...
Studies on the Performances of SO₄²⁻/ZrO₂-Fe₃O₄-MxOy (M=Mg, Zn, Ti) Magnetic Solid Acids

BO REN; MEIQING FAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

A series of solid acid catalysts Studies on the Performances of SO₄²⁻/ZrO₂-Fe₃O₄ (SCFZ), SO₄²⁻/ZrO₂-Fe₃O₄MgO (SZM), SO₄²⁻/ZrO₂-Fe₃O₄-TiO₂ (SZT) and SO₄²⁻/ZrO₂-Fe₃O₄-ZnO (SZZ) are prepared in chemical co-precipitation method. ...
FORMATION OF NOVEL AMINO VIC-DIOXIME COMPLEXES OF CU(II), NI(II), CO(II) AND CD(II) OF 1,3-DIOXALANE GROUPS CONTAINING THE OXIME MOIETY: THERMAL, MAGNETIC AND SPECTRAL STUDIES

SIBEL DUMAN; MEMET SEKERCI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

A novel substituted vic-dioxime ligand containing the amino group, N,N′-[2,2′-{ethane1,2-di-yl-bis(oxy)bis(2,1-phenylene)}bis(N′-hydroxy)-2-(hydroxyimino)acetimidamide] (L1 ) has been prepared from 1,2-bis(o-aminophenoxy)ethane, ...
Brønsted Acidic Ionic Liquid 1-n-butylimidazolium tetrafluoroborate ([hbim]bf4): A Green Catalyst and Recyclable Medium for the Azidolysis of Epoxides

FARIBA HEIDARIZADEH; AMANOLAH ZAREI (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Epoxides undergo rapidly ring opening with sodium azide in [Hbim]BF4/H2O (2:1) medium, under mild condition to afford the corresponding 2-azidoalchols in high yields. The remarkable features of this procedure are improved ...
Effect of Zirconium Nanoparticles on the Mechanical Properties of Light-Cured Resin Based Dental Composites

NIGHAT AFZA; ITRAT ANIS; MUHAMMAD ASLAM; MUHAMMAD RAZA SHAH; MUHAMMAD TAHIR HUSSAIN; TANVEER HUSSAIN BOKHARI; AJAZ HUSSAIN; MUHAMMAD SAFDER (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

The aim of this study was to evaluate the mechanical properties of conventional composite resins (Solare-P) and the modified composite resin having mixed with zirconium nanoparticles. The composite resins are used to replace ...
Adsorption Kinetics of Protons by α-Aluminium Hydroxide

SYED MUSTAFA; MUHAMMAD SAFDAR; MUHAMMAD WASEEM; ABDUL NAEEM; SYED TASLEEM; KHIZAR HUSSAIN SHAH; MOHAMMAD TARIQ JAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

The adsorption desorption rate of H⁺ ions on α-aluminium hydroxide has been investigated as a function of pH and temperature from aqueous electrolyte solution of ZnCl₂. It is observed that the protonation of the α-Al(OH)₃ ...
Sol–Gel Synthesis of Cathode Material MgMnSiO₄ for Magnesium Cells

JIAN-ZHI SUN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

A cathode materials for magnesium cells MgMnSiO₄ was synthesized via sol-gel method in this work. DSC-DTA, XRD, IR, SEM were used to characterize the reaction and product. The results showed that the product is well-crystalled ...
Vernonione, A New Urease Inhibitory Carvotacetone Derivative from Vernonia cinerascens

IRSHAD AHMAD; BASHIR AHMAD CHAUDHARY; MUHAMMAD ASHRAF; MUHAMMAD UZAIR; KHALID HUSSAIN JANBAZ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2012-06-20)

Vernonione, a new 7-deoxycarvotacetone derivative 1, together with three known sesquiterpene lactones; vernolide A, C (2,3) and potamopholide (4) has been isolated from the methanolic extract of the roots of Vernonia ...

Now showing items 1-20 of 47

Search DSpace

Advanced Search

Browse

All of DSpace
This Community
- By Issue Date
- Authors
- Titles
- Subjects

Browsing Volume 34 by Issue Date

Browsing Volume 34 by Issue Date

Search DSpace

Browse

All of DSpace

This Community

My Account