Punjab Forensic Science Agency

Lahore, Pakistan

Punjab Forensic Science Agency

Lahore, Pakistan
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Zuber M.,Government College University at Faisalabad | Tabasum S.,Government College University at Faisalabad | Jamil T.,University of Punjab | Shahid M.,University of Agriculture at Faisalabad | And 3 more authors.
Journal of Applied Polymer Science | Year: 2014

We prepared and then blended polyurethanes (PUs) with poly(methyl methacrylate)s (PMMAs) and TiO2 by varying the percentage compositions to form pellets. The chemistry of all of the blended samples was confirmed by Fourier transform infrared spectroscopy. The incorporation of TiO2 into the PU-PMMA matrix was confirmed with scanning electron microscopy analysis. Differential scanning calorimetry analysis and compression testing was performed, and the results are discussed. The cytotoxicity level of the prepared blends displayed dependence on the composition ratio of the PU-PMMA blends. The results reveal that the optimum PU contents in the PU-PMMA-TiO 2 blend were responsible for its better biocompatibility. © 2013 Wiley Periodicals, Inc.


Imran M.,Punjab Forensic Science Agency | Shafi H.,Punjab Forensic Science Agency | Wattoo S.A.,Punjab Forensic Science Agency | Chaudhary M.T.,Punjab Forensic Science Agency | Usman H.F.,Punjab Forensic Science Agency
Forensic Science International | Year: 2015

Anticoagulant rodenticides belong to a heterogeneous group of compounds which are used to kill rodents. They bind to enzyme complexes responsible for recycling of vitamin K, thus producing impairment in coagulation process. Rodenticides are among the most common house hold toxicants and exhibit wide variety of toxicities in non-target species especially in human, dogs and cats. This article reviews published analytical methods reported in literature for qualitative and quantitative determination of anticoagulant rodenticides in biological specimens. These techniques include high performance liquid chromatography coupled with ultraviolet and florescence detectors, liquid chromatography electrospray ionization tandem mass spectrometry, liquid chromatography with high resolution tandem mass spectrometry, ultra performance liquid chromatography mass spectrometry, gas chromatography mass spectrometry, ion chromatography with fluorescence detection, ion chromatography electrospray ionization ion trap mass spectrometry and ion chromatography electrospray ionization tandem mass spectrometry. © 2015 Elsevier Ireland Ltd.


Riaz H.,Punjab Forensic Science Agency | Bhatti A.A.,University of Management and Technology | Tahir M.A.,Punjab Forensic Science Agency | Sarwar M.,Punjab Forensic Science Agency
Proceedings - 2016 11th IEEE International Conference on Design and Technology of Integrated Systems in Nanoscale Era, DTIS 2016 | Year: 2016

Content Addressable Memory is a data storage device that is widely used in many applications. It is especially used in areas needing fast memory access. However, due to use of parallel based search approach and frequent charge and discharge of Match lines and Bit lines/ search lines; the power consumption of CAM is considerable. This paper presents a new cell design for reduction in power consumption of Ternary Content Addressable Memory over the chip. TCAM design techniques at the architectural level are reviewed and an optimized solution is provided. The size of CAM cell is further reduced with better speed and less power consumption as compared to previously implemented designs. A novel ternary content addressable memory (TCAM) cell is proposed that can be used both as Binary CAM and Ternary CAM. The proposed design can be utilized as per needs and requirements of the designers. © 2016 IEEE.


Perveen H.,The University of Lahore | Farrukh M.A.,The University of Lahore | Khaleeq-Ur-Rahman M.,The University of Lahore | Munir B.,The University of Lahore | Tahir M.A.,Punjab Forensic Science Agency
Russian Journal of Physical Chemistry A | Year: 2014

Surfactant controlled synthesis of magnesium oxide-tin oxide (MgO-SnO2) nanocatalysts was carried out via the hydrothermal method. Concentration of sodium dodecyl sulfate (SDS) was varied while all other reaction conditions were kept constant same for this purpose. Furthermore, MgO-SnO2 nanocatalysts were also prepared by changing the precursor's concentration. These precursors are magnesium nitrate Mg(NO3)2· 6H2O and tin chloride (SnCl4·5H2O). The influence of these reaction parameters on the sizes and morphology of the nanocatalysts were studied by using Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy-Energy dispersive X-ray (SEM-EDX), Powder X-ray diffraction (XRD), Transmission electron microscopy and Thermo gravimetric analysis (TGA). The catalytic efficiency of MgO-SnO2 was checked against 2,4-dinitrophenylhydrazine (DNPH), which is an explosive compound. The nanocatalysts were found as a good catalyst to degrade the DNPH. Catalytic activity of nanocatalysts was observed up to 19.13% for the degradation DNPH by using UV-spectrophotometer. © 2015 Pleiades Publishing, Ltd.


Mughal S.Y.,The University of Lahore | Khan I.U.,The University of Lahore | Harrison W.T.A.,University of Aberdeen | Khan M.H.,Punjab Forensic Science Agency | Arshad M.N.,King Abdulaziz University
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title compound, C14H12FNO4S, the dihedral angle between the aromatic rings is 50.26 (9)°and the C-S-N-C bond adopts a gauche conformation [torsion angle =-68.12 (15)°]. The dihydro-dioxine ring is disordered over two orientations, which both approximate to half-chairs, in a 0.880 (7):0.120 (7) ratio. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into C(4) chains propagating in [100]. Weak C-H⋯O and C-H⋯F inter-actions consolidate the packing.


PubMed | Punjab Forensic Science Agency
Type: Case Reports | Journal: Journal of forensic sciences | Year: 2016

In January 2012, 664 cases of pyrimethamine toxicity and 151 deaths were reported among cardiac patients that had recently received free medicines from pharmacy of Punjab Institute of Cardiology, Lahore, Pakistan. These patients, ages ranged from 58 to 75 years, were prescribed simvastatin, clopidogrel, aspirin soluble, isosorbide mononitrate, and amlodipine. On examination of medications being given to them, it was found that a particular batch of isosorbide mononitrate tablets was contaminated with 50 mg pyrimethamine. Cardiac patients were taking isosorbide contaminated with pyrimethamine twice daily (100 mg pyrimethamine/day), whereas therapeutic dose of pyrimethamine for malaria is 25 mg/week. Postmortem urine, cardiac blood, and femoral blood specimens of three deceased males were submitted to authors laboratory for analysis. Postmortem toxicological analysis revealed that pyrimethamine concentration fell within the range of 1-10 g/mL by liquid chromatography. Clinical, autopsy, histopathological, and toxicological findings strongly suggested toxicity due to pyrimethamine accumulation that resulted in deaths of these cardiac patients.


PubMed | Punjab Forensic Science Agency
Type: | Journal: Forensic science international | Year: 2015

Anticoagulant rodenticides belong to a heterogeneous group of compounds which are used to kill rodents. They bind to enzyme complexes responsible for recycling of vitamin K, thus producing impairment in coagulation process. Rodenticides are among the most common house hold toxicants and exhibit wide variety of toxicities in non-target species especially in human, dogs and cats. This article reviews published analytical methods reported in literature for qualitative and quantitative determination of anticoagulant rodenticides in biological specimens. These techniques include high performance liquid chromatography coupled with ultraviolet and florescence detectors, liquid chromatography electrospray ionization tandem mass spectrometry, liquid chromatography with high resolution tandem mass spectrometry, ultra performance liquid chromatography mass spectrometry, gas chromatography mass spectrometry, ion chromatography with fluorescence detection, ion chromatography electrospray ionization ion trap mass spectrometry and ion chromatography electrospray ionization tandem mass spectrometry.


PubMed | The University of Lahore and Punjab Forensic Science Agency
Type: Journal Article | Journal: Journal of forensic sciences | Year: 2015

Fingermarks are one of the most useful forms of evidence in identification and can provide generalized proof of identity in crime investigation. They are developed using various conventional powders. The novel nanopowder ZnO-SiO2 was synthesized via the conventional heating method and characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy-dispersive X-ray (EDX) analysis, transmission electron microscope (TEM), and X-ray diffraction (XRD). The mean particle size of ZnO-SiO2 nanopowder calculated through TEM was 32.9nm. The development of fingermarks was carried out by powder dusting and small particle reagent (SPR) methods. Powder dusting method was used for the development of latent fingermarks on various dry, nonporous, and semi-porous surfaces. The SPR method was also applied to wet nonporous surface. The developed latent fingermarks using ZnO-SiO2 nanopowder were found to have excellent quality with very clear third-level ridges detail and had better visibility than commercially available white powder.


A rapid colorimetric method for detection of p-phenylenediamine (PPD) in various biological samples is developed. The o-cresol test for acetaminophen detection has been modified to detect PPD in blood, urine, gastric contents, and liver. After precipitating protein with trichloroacetic acid solution (2 mL, 10% w/v), biological specimens were required to convert PPD metabolites to PPD by acid hydrolysis. Finally, o-cresol solution (1 mL, 1% w/v), hydrogen peroxide (200 L, 3%v/v), and concentrated ammonium hydroxide (0.5 mL) were added in the biological samples. The presence of PPD was indicated by formation of violet color which was turned to bluish green color within 10-15 min. The limit of detection was found to be 2 mg/L in blood, urine, and gastric contents and 2 mg/Kg in liver. This method is also free from any potential interference by p-aminophenol, acetaminophen, and other amine drugs under test conditions. This method was successfully employed to thirteen fatal cases of PPD poisoning.


PubMed | Punjab Forensic Science Agency
Type: | Journal: Legal medicine (Tokyo, Japan) | Year: 2016

A dead body of middle aged man was exhumed from 6.5 month earth-grave. Autopsy findings were non-specific as the body was completely putrefied. Deceaseds scalp hair and kidney was sent for toxicological analysis. Hair sample (50mg) was incubated with 1M NaOH (2 ml). Chloroquine was detected in hair and kidney during basic drug screen performed on GC/MS. For confirmation and quantitation, chloroquine was extracted using Hypersep verify CX SPE cartridges while mass detector was operated in SIM mode using the ions of m/z 245.0, 290.1, 319.0 for chloroquine while ions of m/z 260 and 455 were monitored for nalorphine (internal standard). Chloroquine was present in high concentration in hair (211 ng/mg) as well as in kidney (37.3mg/kg). Moreover, chloroquine was not detected in the wash solvents, suggesting ingestion of the drug rather than an external contamination of hair. These findings strongly suggested the acute exposure of higher doses of chloroquine to the deceased before death.

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