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Nisa A.-U.,Tood and Biotechnology Research Center | Zahra N.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Hina S.,Tood and Biotechnology Research Center | Ejaz N.,Tood and Biotechnology Research Center
Pakistan Journal of Scientific and Industrial Research Series B: Biological Sciences | Year: 2012

In this study various poultry and fish feed samples were initially analyzed for presence of aflatoxin. All the samples were found contaminated with aflatoxin Bl only. Contaminated samples were treated with different organic and inorganic chemicals to detoxify aflatoxin Bl in poultry and fish feed samples. The maximum reduction in the aflatoxin Bl concentration was observed with 0.5% HCl as 14.20 ppb to 2.09 ppb (86.50%) in the poultry and 69.26 ppb to 10.46 ppb (84.89%) in fish feed samples. Source


Shah A.T.,University of Punjab | Shah A.T.,Beijing University of Chemical Technology | Mujahid A.,University of Punjab | Farooq M.U.,University of Punjab | And 4 more authors.
Journal of Sol-Gel Science and Technology | Year: 2012

The nanoparticles of monovacant lacunary keggin-type polyoxometalate (C 19H 42N) 4H 3(PW 11O 39) has been successfully synthesized by Micelle Directed Method using hexadecyltrimthyl ammonium bromide (CTAB) as a template. Non-ionic copolymer Pluronic F127 was used as a capping agent that helps in formation of nanoparticles by preventing the aggregation during the coating of H 3(PW 11O 39) 4- onto the counter ion (C 19H 42N) +. The synthesized material was characterized by Scanning electron microscope (SEM), TGA, DSC and FT-IR techniques. SEM images indicated that (C 19H 42N) 4H 3(PW 11O 39) nanoparticles possess spherical structure. FTIR results revealed that the structural integrity of monovacant lacunary keggin-type polyoxometalates (POM) was not affected when reducing the size. TGA-DSC results showed that the material was thermally stable (with 37 % weight loss) and POM encapsulates CTAB. The efficiency of synthesized material was checked by applying it as a catalyst for the oxidation of toxic mordant yellow dye i.e., potentially hazardous and non-biodegradable azo dye. The (C 19H 42N) 4H 3(PW 11O 39) nanoparticles gave 96 % dye degradation in 60 min at 60 °C temperature. Moreover, on recycling POM nanoparticles demonstrate 92 % oxidative degradation of mordant yellow dye. © 2012 Springer Science+Business Media, LLC. Source


Alam S.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Habib F.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Irfan M.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Iqbal W.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Khalid K.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials
Journal of the Chemical Society of Pakistan | Year: 2010

Glass Fiber Reinforced polymer matrix composites are one of the most important engineering materials required for a variety of advanced and sophisticated applications in modern industry. The two components of a GRP composites are the matrix (the continuous phase) and the reinforcing glass. The matrix itself does not provide the strength, but it serves to bond the reinforcing glass fibers and to transfer the load to the reinforcing phase. Glass reinforcements provide strength for the GRP composites that is why we can say that mechanical properties of GRP composites depends mainly on the orientation, amount and type of fiber reinforcement present in it. The main applications of GRP composites are in chemical industry as storage tanks, in aerospace industry, and mainly in construction industry as cladding over other construction materials and other non-loadbearing applications. In the present work different types of glass fabric like chopped strands and roving, were selected to study the effect of their different orientations on mechanical properties of GRP composites. Thickness of sheets and resin content were kept constant for all the samples. Hand lay up method was used for the production of GRP composite. The mechanical properties like tensile strength, impact strength and hardness along with density of the samples were investigated using tensile testing machine, densitometer, charpy impact testing machine and rockwell hardness tester respectively. Source


Iqbal W.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Zahra N.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Alam S.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Habib F.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials | Irfan M.,Pakistan Institute of Technology for Minerals and Advanced Engineering Materials
Journal of the Chemical Society of Pakistan | Year: 2013

Surgical implants used in medical applications are basically the specific type of stainless steel materials. Stainless steel has been used widely and successfully for various types of trauma and orthopedic reconstructions. If an uncoated (bare) stainless steel metal piece is implanted in any part of the body, it will get corrode in Simulated Body Fluid (SBF) present inside the human body (a mixture of different salts). To overcome this problem a coating of Titanium Nitride (TiN) was developed on stainless steel bio-implants using physical vapor deposition (PVD) method. Both coated and uncoated implants were kept dipped in Simulated Body Fluid for five months. The samples were removed and tested for corrosion life assessment after every fifteen days using weight loss method. Source

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