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Browsing Volume 31 by Title

Browsing Volume 31 by Title

Now showing items 1-20 of 65

130 kDa Acid Phosphatase from the Liver of Labeo Rohita: Isolation, Purification and some Kinetic Properties

AISHA SIDDIQUA; MEHRIN SHERAZI; RUBINA NAZ; IRSHAD ALI; ASMA SAEED; SHAH, ABDUL HALEEM; KHAN, ABDUR RAHIM; MUSHTAQ AHMAD; KHAN, HIDAYAT ULLAH; AHMAD SAEED (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

An isoenzyme of high molecular weight acid phosphatase (HM-ACP) from the liver of fish Rohu (Labeo Rohita) was isolated and purified to homogeneity. The enzyme had specific activity of 14.96 U/mg and a recovery of about 4 ...
Analysis of Silymarin and Oil Contents in the Seeds of Silybum marianum Collected From Different Regions of NWFP Pakistan

IQBAL HUSSAIN; HAMAYUN KHAN; FARHAT ALI KHAN; ABDUL LATIF KHAN; M. IQBAL KHAN; MURTAZA HUSSAIN; LAJBER KHAN; GUL AKHTER MARWAT (Karachi: The Chemical Society Of Pakistan, 2009-12-13)

Silybum marianum, a wild medicinal plants containing Silymarin, which is a known drug, used as the hepatoprotective agent of the liver. S. marianum growing in different areas of NWFP were collected and analyzed for the ...
Application of Response Surface Methodology to Optimize Medium Components for Production of Alkaline Protease by Bacillus subtilis IC-5

SHEREEN GUL; MUJEEB-UR-RAHMAN; IRFAN HAFEEZ; ACHAKZAI, ABDUL KABIR (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

Optimization of fermentation medium for production of alkaline protease by using Bacillus subtilis IC-5 was carried out. The concentration of agricultural by product (soybean meal). carbon source (glucose) and nitrogen ...
Assessment of Bioactivity of Cassiafistula Using Bombyx mori Lethality Assay

MUHAMMAD ASHFAQ; HANIF, MUHAMMAD ASIF; JAMIL, MUHAMMAD SALMAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

In recent times, focus on plant research has increased all over the world and a large body of evidence is being collected to evaluate immense potential of medicinal plants used in various traditional systems. In this regard, ...
Chemical Composition of Volatile Fraction of Pakistani Peanut and its Antiradical Activities

MUHAMMAD ATHAR ABBASI; TAUHEEDA RIAZ; FARHAN MEHMOOD KHAN; AZIZ-UR-REHMAN; DURRE SHAHWAR; NAEEM AHMAD; TAYYABA SHAHZADI; MUHAMMAD AJAIB; VIQAR UDDIN AHMAD (Karachi: The Chemical Society Of Pakistan, 2009-12-18)

Arachis hypogaea Linn. (peanut or groundnut) is an economically important crop. Thousands of peanut cultivars are grown in the world and studies have been carried out on these but, to the best of our knowledge, no salient ...
Chemical Composition, Antioxidant and Antimicrobial Activities of Citrusjambhiri Lush and Citrus reticulata Blanco Essential Oils

SANA SADAF; BHATTI, HAQ NAWAZ; ZAFAR IQBAL; MUHAMMAD SHAHID (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

The aim of this study was to investigate the time interval in which we can get maximum concentration of essential oil from the peels of Citrusjambhiri Lush and Citrus reticulata Blanco, to determine the composition of peel ...
Chemical Pollution Profile of Rehri Creek Area, Karachi (Sindh)

ATIF SHAHZAD; KHAN, MOAZZAM ALI; S. SHAHID SHAUKAT; WAQAR AHMED (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

The present investigation focuses on environmental issues along Rehri Creek area, which is an imperative creek of economic importance. During the study, a total of 30 samples of wastewater (industrial waste, Cattle colony ...
Cholinomimetic and Calcium Channel Blocking Activities of the Aerial Parts of Tylophora hirsuta (Wall.)

BASHIR AHMAD; NIAZ ALI; SHUMAILA BASHIR; JAMSHAID AHMAD; SADIQ AZAM; IBRAR KHAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

The effects of crude methanolic extract of Tylophora hirsuta (Th.cr) were studied for possible cholinommetic and calcium channel blocking activities in rabbit's jejunum preparations at different doses. Maximum spasmogenic ...
Comparative Vapour Phase FTIR Studies and Vibrational Assignment of Cyclopentadienyl-manganese-tricarbonyl and Methylcyclopentadienyl-manganese-tricarbonyl

Zahid Mahmood; Syeda Robina, Gillani (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

The FTIR spectra in solution and vapour phase of the compounds, cyclopentadienyl manganese tricarbonyl (η-C₅H₅)Mn(CO)₃and methylcyclopentatadieny l manganese tricarbonyl (η-C₅H₄CH₃)Mn(CO)₃ were measured in the region ...
Comparison of the Products Distribution of the Pyrolysis of Paper with Its Oxidative Cracking

SHAHNAZ PERVEEN; ZAHID HUSSAIN; KHALID MOHAMMED KHAN (Karachi: The Chemical Society Of Pakistan, 2009-12-14)

Paper is a cleaner biomass and has been converted into useful products by its pyrolytic and oxidative cracking. Its oxidative cracking was an attempt for the product selective cracking. It is a hydrothermal cracking at ...
Comparison of Two Extraction Methods for Metals from Atmospheric Particulate Matter

QURAISHI, TAUSEEF AHMAD; MIR, BISMA PERVEZ; SCHAUER, JAMES JAY (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

: Particulate pollution in ambient air of Lahore is a serious problem. Atmospheric particulates concentrations (PMIO) were measured at the city centre during February to April 2007, which ranged between 465 and 806 pg/m3 ...
Determination of Activation Energy for the Degradation of Rhodamine B in the Presence of Hydrogen Peroxide and some Metal Oxide

ABBAS MEHRDAD; ROBAB HASHEMZADEH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

In this research, degradation of rodamine B in the presence of (hydrogen peroxide), (hydrogen peroxide+aluminum oxide), (hydrogen peroxide+nano-sized aluminum oxide) and (hydrogen peroxide+iron oxide) was curried out at ...
The Distances of the Closest Approach and of the Reaction Site-From the Electrode-for Adiabatic Heterogeneous Electron Transfer. The Case of Pyridinium (Mono) Cations

MAHBOOB MOHAMMAD (Karachi: The Chemical Society Of Pakistan, 2009-12-20)

In investigating the heterogeneous electron transfer process in some pyridinium compounds, those physical (distance) parameters were investigated which could be relevant to the adiabaticity of a heterogeneous electron ...
Effect of Pretreatments on Enhanced Degradation of Polyisoprene Rubber by Newly Isolated Bacillus sp. Strain SIO

ZIAULLAH SHAH; SHAH, AAMER ALI; ABDUL HAMEED; FARIHA HASAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

The present investigation was conducted to isolate polyisoprene rubber (latex gloves) degrading microorganisms from soil. Twelve bacterial species were isolated through enrichment technique and were screened for their ...
Effect of the Hydrophilic Block Length on the Micellar Properties of Oxyethylene-Oxybutylene Diblock Copolymers in Aqueous Solution: Density and Viscosity Studies

ABBAS KHAN; DURRANI, GULREZ FATIMA; MUHAMMAD USMAN; WAYNE HARRISON; MOHAMMAD SIDDIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

Density and viscosity measurements, over a wide range of concentration and temperature, were implied to investigate the effect of hydrophilic block length on the micellar properties of the aqueous solution of E40B8, EgoB8 ...
Effect of the Hydrophilic Block Length on the Surface-Active and Micellar Thermodynamic Properties of Oxyethylene-Oxybutylene Diblock Copolymers in Aqueous Solution

ABBAS KHAN; DURRANI, GULREZ FATIMA; MUHAMMAD USMAN; WAYNE HARRISON; IMUHAMMAD SIDDIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

The effect of hydrophilic block length on the surface and micellar thermodynamic properties of aqueous solution of E40 B8, E80B8, and E120 B8 diblock copolymers, were studied by surface tension measurements over a wide ...
Effect of Time Intervals on Levels of Selected Heavy Metals in Surface and Ground

ZAKIR, SHAHIDA NASREEN; IHSAN IHSANULLAH; SHAH, 'MUHAMMAD TAHIR; ZAFAR IQBAL (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)

During the last two decades, the high rate of industrialization, unplanned urbanization and heavy load of transportation resulted in a drastic increase in water pollution within the Peshawar basin in general and in the ...
Environmental Pollution, A Threat to Photosynthesis in Healthy Plants

GULREZ FATIMA DURRANI; MUSA KALEEM BALOCH (Karachi: The Chemical Society Of Pakistan, 2009-12-01)

Environmental pollutants, in atmosphere depend upon the source, strength, meteorological conditions and topography and effect the flora and fauna. Photosynthesis, which is the main necessity for plants to maintain their ...
A FACILE AND EFFICIENT APPROACH TO THE SYNTHESIS OF 2,6-DIACETYLPYRIDINE

Guangyong, Xie; Haitao AI; Lu Lei; Dongfang Zhang (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

2,6-Diacetylpyridine was synthesized via esterification by using pyridine-2,6-dicarboxylic acid as precursor and successive Claisen condensation promoted by sodium for the first time. Compared with traditional sodium ...
FTIR Study of the Methylation of Phenol with Dimethyl Carbonate over KBr/Si02

BlNG CHEN; QINGNIAN DONG; NING ZHAO; WEI WEI; YUHAN SUN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-08-20)

The O-Methylation of phenol with dimethyl carbonate (DMC) over KBr/SiO2 catalyst was carried out and the reaction mechanism was investigated by in-situ FTIR. It was found that phenol was deprotonated to generate phenolate ...

Now showing items 1-20 of 65

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