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1.
Poly(vinylbenzyltrimethylammonium chloride)‐graft‐cotton cellulose, an anion‐exchange matrix, was synthesized by a mutual radiation‐induced grafting technique with a 60Co γ‐radiation source. The grafted matrix was characterized by grafting yield estimation, elemental analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy. The grafting yield decreased with the increase in the dose rate. However, the grafting yield and nitrogen content of grafted samples increased almost linearly with an increase in the total irradiation dose. To evaluate the performance of the grafted anion‐exchange matrix, the protein adsorption and elution behavior were investigated in a continuous column process under various experimental conditions, with bovine serum albumin used as a model protein. The binding and elution behavior of the anion‐exchange matrix depended on different experimental parameters, such as the grafting yield, ionic strength, pH of the medium, and amount of protein loaded. From a breakthrough curve, the equilibrium binding capacity and elution percentage of the grafted anion‐exchange matrix were estimated to be 40 mg/g and 94%, respectively. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 5512–5521, 2006 相似文献
2.
Two experimental devices were designed and built to determine four coefficients KT KM DM D (or δT = DT / DM occurring in simultaneous heat and mass transfer equations, where,K T and DM are thermal conductivity and moisture diffcusivity respectively, DT ( or δ T is temperature gradient Induced moisture migration coefficient and KM is moisture gradient Induced heat transfer coefficient. Three food materials, i.e. potato, bread dough and bread, were tested. From this study, it was found that the value of 5 was higher for low density food materials, such as bread, than for high density materials, such as potato. The coefficient & measures moisture migration contribution due to temperature gradient within the material. The average values of δ T for potato, bread dough and bread were 0.0014, 0.0059 and 0.0127 per °C, respectively. The contribution of temperature gradient to the overall moisture migration is negligible In high density materials. However, this contribution may be important in the moisture migratlon analysls for low density materials. The moisture gradient induced heat transfer coefficient % as found to be negligible for the materials tested in this study 相似文献
3.
Sanjay B. Bansode Ramesh S. Kapadnis Abu S. Ansari Vasant G. Wagh Anil N. Kulkarni Sampat S. Kale Habib M. Pathan 《Journal of Materials Science: Materials in Electronics》2016,27(12):12351-12356
Films of indium selenide was deposited onto glass and indium tin oxide coated glass substrates in acidic medium using chemical bath deposition at room temperature. Indium sulphate and sodium selenosulphate were used as precursors of In3+ and Se2?, respectively. The structural, surface morphological and optical properties of the deposited films were studied. Diffractograms in structural study revealed the deposited material is In2Se3 films. Controlled bath conditions resulted in the evolution of the In2Se3 microrod-like morphology. The optical band gap of the film was found to be 1.7 eV. 相似文献
4.
Virendra Mishra 《Materials and Manufacturing Processes》2018,33(14):1518-1530
The paper presents experimental investigations into electric discharge grinding (EDG) and ultrasonic vibration-assisted electric discharge grinding (UVAEDG) of Inconel 601. The process parameters selected for both processes were duty cycle, discharge current, pulse on time, grinding wheel speed, work speed, and speed ratio to study their influence on responses like surface roughness (Ra) and material removal rate (MRR). It was found that duty cycle, wheel speed, work speed, discharge current, speed ratio, and pulse duration significantly influenced MRR and Ra. It was inferred that MRR increased with increase in duty cycle, wheel speed, current, work speed, and pulse duration in both EDG and UVAEDG processes. It was also inferred that Ra increased with rise in duty factor, pulse on time, and discharge current in EDG and UVAEDG processes. 相似文献
5.
Pandian Vasant Nader Barsoum 《Engineering Applications of Artificial Intelligence》2009,22(4-5):767-777
Many engineering, science, information technology and management optimization problems can be considered as non-linear programming real-world problems where all or some of the parameters and variables involved are uncertain in nature. These can only be quantified using intelligent computational techniques such as evolutionary computation and fuzzy logic. The main objective of this research paper is to solve non-linear fuzzy optimization problem where the technological coefficient in the constraints involved are fuzzy numbers, which was represented by logistic membership functions using the hybrid evolutionary optimization approach. To explore the applicability of the present study, a numerical example is considered to determine the production planning for the decision variables and profit of the company. 相似文献
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The effect of elevated temperature on the structural stability and alloy formation in Mo-Zr multilayers is investigated. Mo-Zr multilayers deposited by the electron beam evaporation technique under ultra-high vacuum conditions are annealed up to 650 °C. The changes induced due to thermal treatment are observed using X-ray reflectivity (both specular and off-specular) and X-ray diffraction techniques. The Mo-Zr multilayers remained as an insoluble layered structure even after annealing as revealed from X-ray reflectivity measurements. The interfacial roughness is found to be very similar at all interfaces and decreases on annealing. The multilayer structure remains intact on annealing with expansion of the multilayer period and a marginal increase in X-ray reflectivity. 相似文献
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9.
Structural study of a lead (II) organic complex – a key precursor in a green recovery route for spent lead‐acid battery paste
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10.
Multimedia Tools and Applications - Since many years, researchers have been developing techniques for copyright protection. This paper presents a novel approach for copyright protection of... 相似文献