Papers by Keyword: Yield

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Authors: Devarapu Srinivasa Reddy, Govindarajan Suresh Kumar
Abstract: In-Situ Combustion (ISC) thermal Enhanced Oil Recovery (EOR) methods are aimed at increasing the oil recoveries of heavy oil reserves that are expected to play an instrumental role in near future in meeting the world’s energy demand. The complex multiphase heat and reactive mass transport necessitate a clear understanding of thermal and kinetic models used in modeling of ISC process. A finite difference based numerical analysis is carried out on heat loss and selective productions of light oil components during ISC, which showed a significant effect on peak temperature, thermal front propagation and the corresponding production rates dictating the performance of ISC process.
Authors: Ting Xiang Liu, Shu Wen Zhang
Abstract: As the traditional land application system, agroforestry systems had developed quickly in decades for the demand of agriculture, forestry and sustainability science under the background of global changeing. In this review, the authors described the classification of agroforestry systems in Europe, China and North America based on their components, spatial&temporal arrangement, function, and agro-ecological zone. Then, this paper discussed the productive characteristics of crop and tree components, especially for elevated CO2. Some directions considering research focuses and problems are suggested in China.
Authors: Noorhana Yahya, Poppy Puspitasari, Nor Hasifah Noordin
Abstract: Ammonia production is a high energy and capital intensive industry as it requires high temperature (400500°C) and high pressure (150300 bar) for its daily operations. By introducing nanocatalyst with the new concept of micro-reactor with applied magnetic field induction, the catalytic activity can be induced and the output can be enhanced. Magneto-dynamics will be introduced in the ammonia production process in order to replace the concept of thermodynamics in the Haber Bosch process. The nanocatalysts (Y3Fe5O12, Fe2O3, MnO, Mn0.8Zn0.2Fe2O4) have been reduced by using the temperature reduction method (TPR). The Y3Fe5O12 (YIG) catalyst with magnetic induction produced242.56µmol/h.g-cat output of ammonia which is 2% much higher than ammonia synthesis without magnetic induction (237.52 µmol/g.h).The ammonia output based on the magnetic induction method at a temperature of 0°C is 242.56µmole/h.g-cat which is 0.90% higher than the synthesis at 25°C temperature (240.4 µmol/g.h). The ammonia output at 0.2Tesla is 249.04 µmole/h.g-cat which is higher 2.6% than the output at 0.1Tesla which is 242.56µmol/g.h. It is proven that the higher the applied magnetic field is, the more effective the catalytic activity will be as a better alignment of the electron spin of the catalyst occurs and enhances the adsorption and desorption process. Y3Fe5O12 (YIG) shows the best catalytic reaction followed by Fe2O3 (hematite) and MnO (manganese oxide). By this new route, synthesis of ammonia at low temperature is realized and offers ammonia producers an economic advantage compared to the classical routes.
Authors: Bong Hwan Kim, Je Sik Shin, D.S. Kim, Ki Young Kim, In Jin Shon, B.M. Moon
Abstract: The consolidation process of ultra fine Si powders, generated as by-product during the decomposition process of silane gases, was systematically investigated for use as economical solar-grade feedstock. Si powder compacts were tried to fabricate by a consolidation process without a binding agent and then their density ratio and strength were evaluated. The Si powders in as-received state were not pure enough to be used alone as solar grade feedstock material. After the adequate chemical treatments, a sufficiently high purity above solar-grade was able to be achieved.
Authors: Jun Xuan Huang, Jing Hui Yang, Jian Ke Li, Yan Jun Liu, Shuang Yue Li, Chun Xia Wu
Abstract: The winter protection of biological species is important in many kinds of fruit production in North China. Environment techniques for overwintering cultivation of summer-bearing, fall-bearing red raspberry and blackberry were studied on open field and large plastic tunnels by analysis of growth and development of raspberry under three kinds of treatment method. The result showed that the shoots death rate was 100% on open field. But, the all shoots survived in other two treatments. The survival percent of seedling was over 90% in all treatments, the survival percent of blackberry was more than red raspberrys. There was not any germination of floricane on open field. The floricanes in plastic tunnels germinated 20-25 days earlier than mounding soil treatment. The germination of primocane on open field was 17-18 days later than in mounding soil and 34-40 days later than in plastic tunnel. The length of primocan on field including mounding soil and planting on open field was shorter than plants in tunnels at the same time. No. 47 black berry grew most rapidly in plastic tunnels among all treatments. The fruit yield per cane on open field was lowest among all cultivar, next was in mounding soil. There was no difference in fruit weight between different treatments of cold protection. The weight of No.47 black berry was around 2-3 times more than other cultivars in all treatments. The yield and fruit weight of raspberry were lower than other place including them in plastic tunnels. Therefore, the raspberry plants in plastic tunnels may live through winter better in dry and cold area without artificial heating. Mounding soil also is simple and good and economic method for its cold protection.
Authors: Margarita V. Samoylova, Dmitriy G. Churilov, Anna A. Nazarova, Svetlana D. Polishchuk, Nikolai V. Byshov
Abstract: The article presents the influence of different nanomaterials such as nanopowders of ferrum, cobalt and cuprum, suspensions of copper and cobalt oxides nanoparticles and ultrafine humic acids on potato breed “Latona”. We have studied the influence of nanomaterials on morphological and physiological parameters of plants, the yield, its structure and chemical composition of potato as well as on vitamins C and PP in potato tubers. On the basis of investigations we have recommended introduction of biologically active nanomaterials into intensive technology of growing the crop.
Authors: Yi Bin Liu, Xue Ding, Wei Li
Abstract: Catalytic cracking experiment of recycle oil was carried out in fixed fluidized bed apparatus. The effects of reaction temperature, catalyst to oil ratio and space time on product distributions were investigated. Low conversion of recycle oil was exhibited due to poor cracking performance, moreover, reaction conditions showed obvious influence on gasoline yield.
Authors: Tomonori Nakamura, Toshiyuki Miyanagi, Isaho Kamata, Hidekazu Tsuchida
Abstract: We compared the electrical characteristics of 4H-SiC(0001) and (000-1) Schottky barrier diodes (SBDs), and derived the Schottky barrier heights (Hbs) of Ta, W, Mo, and Pd on {0001}. We investigated the annealing temperature dependence of Hbs in Mo and the W Schottky contacts for (0001) and (000-1). The Hbs are increased by annealing, except for the W Schottky contact on (0001). The yields of 0.25 cm2 as-deposited Mo-SBDs were 93.3% for (0001) and 71.1% for (000-1), respectively. We also demonstrated over 1 cm2 (0001) as-deposited Mo-SBD with a low leakage current, an excellent ideality factor, and no excess current, encouraging the enlargement of the active area in the SBD.
Authors: Yu Jiang, Jun Yu, Cheng Chu Liu
Abstract: Gelatins were prepared from tilapia, salmon and halibut skin through hot water extraction (60°C, 180 min) and their physiochemical properties were compared with commercial gelatins from porcine and bovine sources. Tilapia gelatin contained highest hydroxyproline content (8.45%) and had highest gel strength (376.6 g), followed by salmon gelatin. Halibut gelatin had the lowest hydroxyproline content (24.72% in average) and gel strength (47.56 g in average). Gelatin prepared from tilapia had much higher gel strength and viscosity than commercial pharmaceutical gelatins of porcine and bovine sources and showed a great potential to be utilized in pharmaceutical industry.
Authors: Li Jun Zhang, Qian Cheng Zhao, Bing Bing Wang, Xue Wan, Zhi Bo Li, Jian Wei Li
Abstract: Protein hydrolysates from Tuna frame (TFPH) and Pollock frame (PFPH) were prepared by papain, respectively.The yield, the basic composition content, the antioxidant activity and functional properties (solubility, emulsifying and foaming ability) and the degree of hydrolysis of the protein hydrolysates were evaluated. Results suggest that solubility, antioxidant activity of protein hydrolysate from Pollock frame are better than that of tuna frame, but the yield is lower than that of tuna frame.
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