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Disaster prevention of Mining field roof fall in Open pit to underground

2012 International Conference on engineering Materials, Geotechnical engineering and Environmental engineering, EMGEEE 2012

作者： Li, Yao-ji Li, Xiao-shuang Geng, Wei-le Total control department of the research National engineering research center of phosphate resources development and utilization Kun ming China Technology development department line 2 Yun nan phosphorus chemical group Co. Ltd Kun ming China

ISBN: (纸本)9783037856697

The research object is transformation the deep orebody of jinning phosphate which belong to Yunnan Phosphorus Group Co from pit to underground mining. Through the mine-site field trips, on the basis of the existing mine geological occurrence conditions, proposed a stope roof fall disaster prevention technology which suitable for mining actual project overview. And related research results can provide theoretical guidance and advice of roof fall disaster for mining of Yunnan Phosphate Group or other similar conditions mines which are in transformed from open pit to underground mining. © (2013) Trans Tech Publications, Switzerland.

关键词： Disaster prevention

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Effects of two pre-treatment methods on functional properties of egg white protein hydrolysates obtained by pepsin

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Advance Journal of Food Science and Technology 2013年第8期5卷 1043-1048页

作者： Sun, Shuguo Yang, Tao Lin, Qinlu Ma, Meihu Luo, Feijun Liu, Junwen National Engineering Laboratory for Rice and Byproduct Process Faculty of Food Science and Engineering Center South University of Forestry and Technology Changsha 410004 China National Research and Development Center For Egg Processing College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China College of Chemistry and Chemical Engineering Jishou University Jishou 416000 China Department of Histology and Embryology School of Basic Medical Sciences Central South University Changsha Hunan 410013 China

After Egg White Proteins (EWPs) were pre-treated by Conventional Heating (CH) Method and Microwave Irradiation (MWI), respectively, functional properties of protein hydrolysates from egg white hydrolyzed by pepsin was systemically investigated. The results indicated the maximum Degrees of Hydrolysis (DHs) of EWPs pre-treated by MWI could reach 19.81%, which was much more than that of EWPs pre-treated by CH. As the pH increased, the solubility of Egg White Protein Hydrolysates (EWPHs) gradually decreased, but the solubility of EWPHs originated from the proteins pre-treated by MWI was also significantly higher (p0.05). According to the experimental results, the EWPHs have potential for use as a natural ingredient for emulsifying and wetting agent. © Maxwell Scientific Organization, 2013.

关键词： Microwave irradiation

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SparkJet efficiency 51

SparkJet efficiency

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51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013

作者： Golbabaei-Asl, Mona Knight, Doyle Anderson, Kellie Wilkinson, Stephen Rutgers - The State University of New Jersey Department of Mechanical and Aerospace Engineering New Brunswick NJ 08903 United States Rutgers - The State University of New Jersey Department of Chemical and Bio-Chemical Engineering New Brunswick NJ 08903 United States NASA Langley Research Center Flow Physics and Control Branch Hampton VA 23681 United States

ISBN: (数字)9781624101816

ISBN: (纸本)9781624101816

A novel method for determining the thermal effiency of the SparkJet is proposed. A SparkJet is attached to the end of a pendulum. The motion of the pendulum subsequent to a single spark discharge is measured using a laser displacement sensor. The measured displacement vs time is compared with the predictions of a theoretical perfect gas model to estimate the fraction of the spark discharge energy which results in heating the gas (i.e., increasing the translational-rotational temperature). The results from multiple runs for different capacitances of c = 3;5;10;20, and 40μF show that the thermal efficiency decreases with higher capacitive discharges. © 2013 by Mona Golbabaei Asl and Doyle Knight.

关键词： Pendulums

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The CO2 Absorption Kinetics in CO2 -Loaded Potassium Carbonate Solution

The CO2 Absorption Kinetics in CO2 -Loaded Potassium Carbona...

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第七届国际分离科学与技术会议

作者： Gyo Hee Kim Ji-won Kim Yeon Ki Hong Jongnam Kim Won Hi Hong Jong Duk Kim Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology Chemical and Biological Engineering Korea National University of Transportation Separation Process Research Center Korea Institute of Energy Research

As the energy-saving CO2 capture process, process based on high pressure CO2 regeneration by crystallization is being developed, and potassium carbonate solution has been in spotlight for the absorbent. The absorption kinetic data in real operating condition is important factor for practical column design in industry [1-2]. However, there were only a few reports on CO2 absorption kinetics in partially carbonated potassium carbonate solution. Therefore, in this research, the study on CO2 absorption kinetics in partially carbonated potassium carbonate solution was investigated in wetted wall column. The potassium carbonate concentration in solution was equivalent with 40 wt% potassium carbonate. The CO2 loading in solution was adjusted with potassium bicarbonate. The experimental temperature was in the range from 60 to 80℃. The inlet CO2 gas concentration was from 4% to 16%. The CO2 absorption rate in solution of CO2 loading 0.6 was 4 to 6 times lower than that in the solution of CO2 loading 0.5.

关键词： Loaded Potassium Carbonate Solution The CO2 Absorption Kinetics in CO2

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Effects of microwave irradiation pre-treatment of egg white proteins on ant oxidative activity of their hydrolysates prepared with pepsin

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Advance Journal of Food Science and Technology 2013年第7期5卷 936-940页

作者： Yang, Tao Sun, Shuguo Lin, Qinlu Ma, Meihu Luo, Feijun Liu, Junwen National Engineering Laboratory for Rice and Byproduct Process Faculty of Food Science and Engineering Center South University of Forestry and Technology Changsha 410004 China National Research and Development Center For Egg Processing College of Food Science Technology Huazhong Agricultural University Wuhan 430070 China College of Chemistry and Chemical Engineering Jishou University Jishou 416000 China Department of Histology and Embryology School of Basic Medical Sciences Central South University Changsha Hunan 410013 China

The effects of Conventional Heating (CH) and Microwave Irradiation (MWI) pre-treatment of Egg White Proteins (EWPs) on antioxidative activity of their hydrolysates prepared with pepsin were investigated. MWI pre-treatment of EWPs resulted in a higher degree of hydrolysis (DH) and the highest hydroxyl radical scavenging activity (40.67±1.30%), superoxide anion scavenging activity (75.53±2.79%), inhibitory activity of tea oil autoxidation (67.68±2.50%) and reducing power (0.34±0.01) of Egg White Proteins Hydrolysates (EWPHs) in comparison with CH pre-treatment, although there was no significant difference in DPPH radical scavenging activity between the EWPHs originated from the proteins pre-treated by CH and MWI (p>0.05). According to the experimental results, MWI pre-treatment could improve the antioxidant activities of EWPHs compared with CH treatment. © Maxwell Scientific Organization, 2013.

关键词： Microwave irradiation

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Co-encapsulation of human serum albumin and superparamagnetic iron oxide in PLGA nanoparticles: Part II. Effect of process variables on protein model drug encapsulation efficiency

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Journal of Microencapsulation 2014年第2期31卷 156-165页

作者： Shubhra, Quazi T. H. Feczk, Tivadar Kardos, Andrea F. Tóth, Judit Mackova, Hana Horak, Daniel Dósa, György Gyenis, János Doctoral School of Molecular and Nanotechnologies Faculty of Information Technology University of Pannonia Egyetem u.10 H-8200 Veszprém Hungary Research Institute of Chemical and Process Engineering Faculty of Information Technology University of Pannonia Egyetem u.10 H-8200 Veszprém Hungary Institute of Materials and Environmental Chemistry Research Center for Natural Sciences Hungarian Academy of Sciences Pusztaszeri u. 59-67 H-1025 Budapest Hungary Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 16206 Prague 6 Czech Republic Department of Mathematics Faculty of Information Technology University of Pannonia Veszprém Egyetem u. 10 Hungary

This study investigates encapsulation efficiency of model drug, encapsulated by magnetic poly d,l-lactic-co-glycolic acid (PLGA) nanoparticles (NPs). This is the following part of our preceding paper, which is referred in this paper as Part I. Magnetic nanoparticles and model drug human serum albumin (HSA)-loaded PLGA NPs were prepared by the double emulsion solvent evaporation method. Among five important process variables, concentration of PLGA and concentration of HSA in the inner aqueous phase along with their cross-effect had the strongest influence on the encapsulation efficiency. Encapsulation efficiency of nanoparticles ranged from 18% to 97% depending on the process conditions. Higher encapsulation efficiencies can be achieved by using low HSA and high PLGA concentrations. The optimization process, carried out by exactmathematical tools using GAMSTM/MINOS software makes it easier to find out optimum process conditions to achieve comparatively high encapsulation efficiency (e.g. 92.3%) for relatively small-sized PLGA NPs (e.g. 155 nm). [ABSTRACT FROM AUTHOR]

关键词： Encapsulation efficiency experimental design human serum albumin magnetite nanoparticles poly( d, l-lactic-co-glycolic) acid

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The CO2 Absorption Kinetics in CO2-Loaded Potassium Carbonate Solution

The CO2 Absorption Kinetics in CO2-Loaded Potassium Carbonat...

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第七届国际分离科学与技术会议(Proceedings of the 7th International Conference on Separation Science and Technology)

作者： Gyo Hee Kim Ji-won Kim Yeon Ki Hong Jongnam Kim Won Hi Hong Jong Duk Kim Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and TechnologyRepublic of Korea Chemical and Biological EngineeringKorea National University of Transportation50 Daehak-roChungjuChungbuk 380-702Korea Separation Process Research CenterKorea Institute of Energy ResearchRepublic of Korea

As the energy-saving CO2 capture process,process based on high pressure CO2 regeneration by crystallization is being developed,and potassium carbonate solution has been in spotlight for the *** absorption kinetic data in real operating condition is important factor for practical column design in industry [1-2].However,there were only a few reports on CO2 absorption kinetics in partially carbonated potassium carbonate ***,in this research,the study on CO2 absorption kinetics in partially carbonated potassium carbonate solution was investigated in wetted wall *** potassium carbonate concentration in solution was equivalent with 40 wt% potassium *** CO2 loading in solution was adjusted with potassium *** experimental temperature was in the range from 60 to 80℃.The inlet CO2 gas concentration was from 4% to 16%.The CO2 absorption rate in solution of CO2 loading 0.6 was 4 to 6 times lower than that in the solution of CO2 loading 0.5.

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Correntropy-based kernel learning for nonlinear system identification with unknown noise: an industrial case study

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IFAC Proceedings Volumes 2013年第32期46卷 361-366页

作者： Yi Liu Junghui Chen Engineering Research Center of Process Equipment and Remanufacturing Ministry of Education Institute of Process Equipment and Control Engineering Zhejiang University of Technology Hangzhou 310014 Zhejiang P. R. China (Tel: +86-571-8887-1060 R&D Center for Membrane Technology Department of Chemical Engineering Chung-Yuan Christian University Chung-Li Taiwan 320 Republic of China (Tel.: +886-3-2654107 Fax: +886-3-2654199

One significant challenge in nonlinear system identification development for industrial processes is that the modeling samples often contain outliers and unknown noise. In this paper, a novel Correntropy-based Kernel Learning (CKL) method is proposed for identification of nonlinear systems with such uncertainty. Without resort to unnecessary efforts, the CKL identification method can reduce the effects of outliers by the use of a robust nonlinear estimator that maximizes correntropy. The superiority of the proposed CKL method is demonstrated through identification of an industrial process in Taiwan. The benefit of its more accurate and reliable performance indicates that CKL is promising in practice for identification of nonlinear systems with unknown noise.

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Enhancement of Solar Hydrogen Evolution from Water by Surface Modification with CdS and TiO2on Porous CuInS2Photocathodes Prepared by an Electrodeposition–Sulfurization Method†

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Angewandte Chemie 2014年第44期126卷

作者： Jiao Zhao Tsutomu Minegishi Li Zhang Miao Zhong Gunawan Mamiko Nakabayashi Guijun Ma Takashi Hisatomi Masao Katayama Shigeru Ikeda Naoya Shibata Taro Yamada Kazunari Domen Department of Chemical System Engineering The University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 (Japan) Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem) 5‐1‐5 Kashiwanoha Kashiwa‐shi Chiba 277‐8589 (Japan) State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 (China) Department of Chemical System Engineering The University of Tokyo 5‐1‐5 Kashiwanoha Kashiwa‐shi Chiba 277‐8589 (Japan) Research Center for Solar Energy Chemistry Osaka University 1‐3 Machikaneyama Toyonaka 560‐8531 (Japan) Institute of Engineering Innovation The University of Tokyo 2‐11‐16 Yayoi Bunkyo‐ku Tokyo 113‐8656 (Japan)

Porous films of p‐type CuInS 2 , prepared by sulfurization of electrodeposited metals, are surface‐modified with thin layers of CdS and TiO 2 . This specific porous electrode evolved H 2 from photoelectrochemical water reduction under simulated sunlight. Modification with thin n‐type CdS and TiO 2 layers significantly increased the cathodic photocurrent and onset potential through the formation of a p–n junction on the surface. The modified photocathodes showed a relatively high efficiency and stable H 2 production under the present reaction conditions.

关键词： Elektrochemische Abscheidung I‐III‐VI2‐Chalkopyrit Photokathoden Photoelektrochemie Wasserstofferzeugung

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Moisture Diffusivity and Shrinkage of Fruit and Cladode ofOpuntia ficus-indicaduring Infrared Drying

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Journal of Food processing 2014年第1期2014卷

作者： Amira Touil Saber Chemkhi Fethi Zagrouba Thermal Process Laboratory Energy Technologies Research Center (CRTEn) Borj Cedria BP 95 Hammam-Lif Tunis 2050 Tunisiacrten.rnrt.tn Higher Institute of Environmental Sciences and Technologies Carthage University Tunisia Chemical Engineering Department Faculty of Engineering King Khaled University P.O. Box 394 Abha Saudi Arabiakku.edu.sa

Drying behaviour of prickly pear cladodes and fruits was studied with an Infrared dryer. The volume shrinkage for Opuntia ficus-indica products is calculated and a linear relation was established to describe the experimental variation of shrinkage of the product versus its moisture content. Effective diffusion coefficient of moisture transfer was determined using the Fick law at three drying temperatures (40, 50, and 60°C). Shrinkage was also included into the diffusion model for the determination of the effective diffusion coefficient. The obtained results of the effective moisture diffusivity, for the cladode and the fruit, were evaluated in the range of 1.77 × 10 −10 –5.07 × 10 −10 m 2 /s and 2.53 × 10 −10 –7.6 × 10 −10 m 2 /s, respectively. The values of the activation energies for cladode and fruit were estimated to be 45.39 and 47.79 kJ/mol, respectively. However, these values of moisture diffusivity were estimated independently of the evolution of moisture content during drying process. Therefore, a correlation (full quadratic equation) for moisture diffusivity as a function of moisture content and temperature was developed. The parameters are obtained by a multilinear regression method. This equation was found satisfactory to describe the diffusivity evolution function of moisture content and temperature with correlation coefficients of 91.5 and 95%.

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