http://localhost:80/xmlui/handle/123456789/19289 Wed, 22 Apr 2026 22:34:43 GMT 2026-04-22T22:34:43Z http://localhost:80/xmlui/handle/123456789/20054 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. Thu, 20 Jun 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/20054 2013-06-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/20053 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. Thu, 20 Jun 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/20053 2013-06-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/20043 Title: Simple Growth and Characterization of α-Sb₂O₄: Evaluation of their Photo-catalytic and Chemical Sensing Applications Authors: ASLAM JAMAL; MOHAMMED MUZIBUR RAHMAN; SHER BAHADAR KHAN; MOHAMMED MARGUB ABDULLAH; MOHD FAISAL; ABDULLAH MUHAMMAD ASIRI; AFTAB ASLAM; PARWAZ KHAN; KALSOOM AKHTAR Abstract: A comprehensive study on the synthesis, characterization and application of antimony oxide (α-Sb2O4) has been reported in this paper. Antimony oxide (α-Sb2O4) is successfully synthesized by hydrothermal method using antimony chloride and urea as a reducing materials. The morphology of the nanomaterial is investigated by field emission scanning electron microscopy (FE-SEM). Sheet like morphology of α-Sb2O4 ranging from 0.2 µm to 3.0 µm are found in the FE-SEM images. The detailed structural characterizations are performed by X-ray diffraction (XRD), Fourier transform infrared spectrophotometer (FT-IR), and Raman spectrophotometer respectively. It has been confirmed that the synthesized materials are well-crystalline and pure antimony oxide (α-Sb2O4). Optical properties are studied using UV-VIS spectrophotometer, where the direct band-gap of α-Sb2O4 is calculated to be 3.26 eV. The photo-catalytic degradation and chemical sensing applications are successfully checked by simple and reliable UV/vis. spectroscopy and I-V methods respectively. Thu, 20 Jun 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/20043 2013-06-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/20041 Title: A Sensor for Determination of Tramadol in Pharmaceutical Preparations and Biological Fluids Based on Multi-Walled Carbon Nanotubes-Modified Glassy Carbon Electrode Authors: MOHAMMAD AFRASIABI; ZEINAB REZAYATI ZAD; SHOKAT KIANIPOUR; ALI BABAEI; ALI REZA TAHERI Abstract: A chemically modified electrode is constructed based on multi-walled carbon nanotube modified glassy carbon electrode (MWCNTs/GCE). It is demonstrated that this sensor could be used for determination of pharmaceutical important compound tramadol (TRA). The measurements were carried out using differential pulse voltammetry (DPV), cyclic voltammetry (CV) and chronoamperometry (CA) methods. DPV experiments of various concentration of TRA showed two linear dynamic ranges. The first linear dynamic range was from 4 μM to 35 μM, and the second linear dynamic range was between 60 μM to 550 μM. A detection limit of 0.38 µM (S/N = 3) was obtained. The analytical performance of this sensor has been evaluated for the detection of TRA in human serum, human urine and some pharmaceutical preparations with satisfactory results Thu, 08 Aug 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/20041 2013-08-08T00:00:00Z