http://localhost:80/xmlui/handle/123456789/12709 2026-04-05T16:32:13Z 2026-04-05T16:32:13Z MEHREEN LATEEF KAUSER SIDDIQUI MUHAMMAD SALEEM LUBNA IQBAL http://localhost:80/xmlui/handle/123456789/20057 2026-03-11T06:17:51Z 2012-02-07T00:00:00Z

Title: Estimation of Monosodium Glutamate by Modified HPLC Method in Various Pakistani Spices Formula Authors: MEHREEN LATEEF; KAUSER SIDDIQUI; MUHAMMAD SALEEM; LUBNA IQBAL Abstract: The concentration of monosodium glutamate (MSG) was evaluated in ten samples of formulated spices in Pakistan. The samples were analyzed by modified HPLC method after water extraction and derivatization of MSG by dinitrofluorobenzene (DNFB), using reversed phase C18 column, mobile phase was consisted of methanol: water (1:1) followed by UV detection at 254 nm. The standard curve of derivatized MSG of 500, 250 and 125 µg/mL was plotted to determine the quantity of MSG in spices samples. The peak of MSG was identified by comparing it with retention time of MSG standards, that is, 8.6 min. MSG concentration in different samples was in the range of 2.6-7.7%, showing a wide range of added MSG. Glutamate contents in the samples were in the permissible limit established by the European Directive, 95/2/CE. Furthermore, MSG levels in food prepared by the formulated Pakistani spices samples are also less than the largest palatable dose of MSG for humans.

2012-02-07T00:00:00Z YANHUI WANG XIAOMAO ZHOU LIANGWEI DU HUIHUA TAN LIANYANG BAI DONGQIANG ZENG HAI TIAN http://localhost:80/xmlui/handle/123456789/20056 2026-03-11T05:48:54Z 2012-02-05T00:00:00Z

Title: QuEChERS Extraction for High Performance Liquid Chromatographic Determination of pyrazosulfuron-ethyl in Soils Authors: YANHUI WANG; XIAOMAO ZHOU; LIANGWEI DU; HUIHUA TAN; LIANYANG BAI; DONGQIANG ZENG; HAI TIAN Abstract: This paper described a simplified quick, easy, cheap, effective, rugged and safe (QuEChERS) approach for determination of pyrazosulfuron-ethyl (PE) from soil samples by high performance liquid chromatography/ultraviolet (HPLC/UV) detector. Optimized results were obtained dispersing soil in water, followed by the addition of 1% acetic acid (HOAc) in acetonitrile (MeCN), anhydrous magnesium sulfate (MgSO4) and sodium acetate tri-hydrate (NaOAc·3H2O), which was a modification of QuEChERS method without primary and secondary amine (PSA) and C18 sorbent. The results showed the recovery ranged from 70.8% to 99.0% and 83.5% to 86.4% with the relative standard deviations of 2.1% to 7.9% and 7.0% to 10.0% in Changsha and Nanning soil samples, respectively. The limit of detection (LOD) of the method was 0.05 mg/Kg. The limit of quantification (LOQ) was 0.1 mg/Kg

2012-02-05T00:00:00Z PAVLINA PUSTEJOVSKA SIMONA JURSOVA BROZOVA SILVIE http://localhost:80/xmlui/handle/123456789/20054 2026-03-11T05:40:39Z 2013-06-20T00:00:00Z

Title: Determination of Kinetic Constants from Tests of Reducibility and their Application for Modelling in Metallurgy Authors: PAVLINA PUSTEJOVSKA; SIMONA JURSOVA; BROZOVA SILVIE Abstract: The paper analyses details for renewal of the research in blast furnace process within Research Centre ENET at VŠB – Technical University of Ostrava. A newly established laboratory for reducibility testing is an impuls to overcome the former limits and renew a research in its coherence after years. The paper deals with the possibilities of optimization of blast furnace operation. In the introduction, it sums up different approaches how to model blast furnace operation. It discusses the variety of optimal operation for different kinds of iron making technologies. It evaluates reduction course and reducing gas consumption in the stack of reduction aggregate. In the experimental, it creates kinetics model of blast furnace operating using Matlab mathematical library. It determines kinetic and heat limits of carbon consumption for different process conditions.

2013-06-20T00:00:00Z MUHAMMAD SALEEMUDDIN SYED TARIQ ALI MUHAMMAD KASHIF PERVEZ MUHAMMAD JAVAID MUGHAL MUNAWWER RASHEED http://localhost:80/xmlui/handle/123456789/20053 2026-03-11T05:37:58Z 2013-06-20T00:00:00Z

Title: Optimization of Easy-Care Finishing of Cotton/Polyester Blend Fabric Authors: MUHAMMAD SALEEMUDDIN; SYED TARIQ ALI; MUHAMMAD KASHIF PERVEZ; MUHAMMAD JAVAID MUGHAL; MUNAWWER RASHEED Abstract: The objective of the given study was to obtain eco-friendly finishes and optimized application parameters of easy-care finishing. Easy-care finishing of cotton/polyester blend fabric was done at different pH values and resin concentrations using three different types of cross-linking finishing resins: modified dihydroxyethylene urea (I), modified dimethyloldihydroxyethylene urea (II), and modified N-methyloldihydroxyethylene urea (III). Optimum mechanical properties (wrinkle recovery angle WRA; 252 (W+Fo) and tensile strength TS; 2143 N) were observed at 30 g/l of resin I and 5.0 pH. At these conditions resin I showed lowest free formaldehyde content (3.07 mg/kg). Formaldehyde (HCHO) was extracted, derivatized, and estimated as DNPH-formaldehyde using HPLC through a C18 column. No appreciable difference in easy-care properties were observed when cotton/polyester blend fabric was finished, in optimized conditions, with resins II and III, except slightly increased HCHO.

2013-06-20T00:00:00Z