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Search Results: 1 - 10 of 26360 matches for " Peng Deng "
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Development of Children’s Thinking and the Reform of Education in China: A PIONEERING INTERNATIONAL WORKSHOP ON PHILOSOPHY FOR CHILDREN IN KUNMING, CHINA
Liao Boqin,Deng Peng
Analytic Teaching and Philosophical Praxis , 2000,
Abstract: One of the first workshops on philosophy for children in China was held in Kunming, Yunnan Providence, July 25-31, 1997. Although there were only 7 days of training, it was a great success.A summary of our experience of the workshops and the deeper and wider implications for Philosophy for Children and the reform of Chinese education follows.
QoS-Guaranteed Secure Multicast Routing Protocol for Satellite IP Networks Using Hierarchical Architecture  [PDF]
Zhizhong Yin, Long Zhang, Xianwei Zhou, Peng Xu, Yu Deng
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.34045
Abstract: Most recent satellite network research has focused on providing routing services without considering security. In this paper, for the sake of better global coverage, we introduce a novel triple-layered satellite network architecture including Geostationary Earth Orbit (GEO), Highly Elliptical Orbit (HEO), and Low Earth Orbit (LEO) satellite layers, which provides the near-global coverage with 24 hour uninterrupted over the areas varying from 75° S to 90° N. On the basis of the hierarchical architecture, we propose a QoS-guaranteed secure multicast routing protocol (QGSMRP) for satellite IP networks using the logical location concept to isolate the mobility of LEO and HEO satellites. In QGSMRP, we employ the asymmetric cryptography to secure the control messages via the pairwise key pre-distribution, and present a least cost tree (LCT) strategy to construct the multicast tree under the condition that the QoS constraints are guaranteed, aiming to minimize the tree cost. Simulation results show that the performance benefits of the proposed QGSMRP in terms of the end-to-end tree delay, the tree cost, and the failure ratio of multicasting connections by comparison with the conventional shortest path tree (SPT) strategy.
Pilot Study of Ultrafiltration-Nanofiltration Process for the Treatment of Raw Water from Huangpu River in China  [PDF]
Jianping ZHOU, Naiyun GAO, Guangyong PENG, Yang DENG
Journal of Water Resource and Protection (JWARP) , 2009, DOI: 10.4236/jwarp.2009.13025
Abstract: Pilot-scale test was carried out to evaluate the performance of a combined ultrafiltration (UF)-nanofiltration (NF) membrane process for the treatment of raw water from Huangpu River, Shanghai, in China. Results showed that UF could significantly remove turbidity, iron and manganese, and also could retain a part of high molecular weight (MW) organic compounds. Subsequently, NF could further reject low MW organics and inorganic salts, and ensured the treated water to reach the Standards for Drinking Water Quality in China. It seemed that 90 L/m2·h was an appropriate permeate flux for UF system when the raw water was directly filtered by UF membrane, the addition of coagulant (alum or ferric chloride) was not preferable to mitigate the fouling of the UF membrane. After near 120 days operation, the permeate flux of NF could be main-tained at 24-25 L/m2·h steadily, and no chemical clean was required.
Effects of High Dietary Fluoride on Serum Biochemistry and Oxidative Stress Parameters in Broiler Chickens  [PDF]
Yubing Deng, Hengmin Cui, Xi Peng, Jing Fang, Zhicai Zuo, Junliang Deng, Qin Luo
Health (Health) , 2014, DOI: 10.4236/health.2014.614216
Abstract: The aim of this study was to investigate the effects of high dietary fluoride (F) on serum biochemistry and oxidative damage in broiler chickens. 280 one-day-old healthy avian broiler chickens were randomly allotted into four equal groups and fed with a corn-soybean basal diet containing 22.6 mg·F/kg (control group) or same basal diets supplemented with 400, 800, and 1200 mg·F/kg (high F groups I, II, and III) in the form of sodium fluoride for 42 days. At 42 days of age, the serum F content was markedly higher in the three high F groups than that in the control group. From 28 to 42 days of age, the contents of serum total protein (TP) and albumin (ALB) were significantly lower in the three high F groups. From 14 to 42 days of age, the activities of alkaline phosphatase (ALP), alanine aminotransferase (ALT) and the creatinine (Crea) contents in the serum showed a marked increase in the three high F groups; aspartate aminotransferase (AST) activity and uric acid (Ua) content were significantly increased, and a significant increase in the content of malondialdehyde (MDA) along with marked decreases in the activities of total superoxide dismutase (T-SOD), glutathione peroxidase (GSH-Px), catalase (CAT), the glutathione (GSH) content and the ability to inhibit hydroxyl radical were observed in the high F groups II and III. In conclusion, F has accumulated in the blood circulatory system and dietary F in the range of 800 - 1200 mg/kg could significantly induce abnormalities of bone, liver and kidney, inhibit the synthesis of protein, enhance lipid peroxidation and disturb the antioxidative system of broiler chickens.
Effect of dietary vanadium on small intestinal morphology in broilers  [PDF]
Kangping Wang, Hengmin Cui, Xi Peng, Zhicai Zuo, Jing Fang, Junliang Deng, Yuanxin Deng, Wei Cui, Bangyuan Wu
Health (Health) , 2012, DOI: 10.4236/health.2012.49105
Abstract: The objective of this study was to determine the effects of dietary vanadium on small intestinal morphology of broilers by the methods of light microscopy (LM) and transmission electron microscopy (TEM). A total of 420 one-day-old avian broilers were divided into six groups (seven replicates in each group and ten broilers in each replicate) and fed on a control diet or the same diet supplemented with 5, 15, 30, 45 and 60 mg/kg vanadium in the form of ammonium metavanadate for 42 days. In comparison with those in the control group, the intestinal villus heights were decreased (P < 0.05 or P < 0.01) in the 30, 45 and 60 mg/kg groups, and crypt depths and villus height/crypt depth ratio were decreased in the 45 and 60 mg/kg groups. Ultrastructurally, the microvilli were apparently sparse and short, and the numbers of lysosomes were increased in abovementioned three intestines in the 45 and 60 mg/kg groups at 42 days of age. In conclusion, dietary vanadium in excess of 30 mg/kg could alter the villus height, crypt depth, villus height/crypt depth ratio and ultrastructure, which might impact the development of small intestines in broilers.
The Influence of Sheath Solvent’s Flow Rate on the Quality of Electrospun Ethyl Cellulose Nanofibers  [PDF]
Deng-Guang Yu, Xiong-Xiu Li, Jia-Wen Ge, Peng-Peng Ye, Xia Wang
Modeling and Numerical Simulation of Material Science (MNSMS) , 2013, DOI: 10.4236/mnsms.2013.34B001

The present research investigates the influence of sheath solvent’s flow rate on the quality of electrospun ethyl cellulose (EC) nanofibers using a modified coaxial process. With 24 w/v % EC in ethanol as electrospinnable core fluid and ethanol as sheath fluid, EC nanofibers generated under different sheath flow rates were generated from the modified processes. FESEM observations demonstrate that the modified process is effective in preventing the clogging of spinneret for a smooth electrospinning. The key for the modified coaxial process is the reasonable selection of a sheath flow rate matching the drawing process of core EC fluid during the electrpospinning. The EC nanofibers’ diameters (D, nm) could be manipulated through the sheath-to-core flow rate ratio (f) as D = 819-1651f (R= 0.9754) within a suitable range of 0 to 0.25. The present paper provides useful data for the implementation of the modified coaxial process controllably to obtain polymer nanofibers with high quality.

An Implicit Iteration Process for Common Fixed Points of Two Infinite Families of Asymptotically Nonexpansive Mappings in Banach Spaces
Wei-Qi Deng,Peng Bai
Journal of Applied Mathematics , 2013, DOI: 10.1155/2013/602582
Chemical Constituents of Petroleum Ether Extract from Nervilia foadii
Hua Zhu,Peng Fu,Deng Feng Zou
Pakistan Journal of Biological Sciences , 2006,
Abstract: Five compounds were isolated from the leaves of petroleum ether extract of Nervilia foadii by silica gel column and recrystallization. These compounds were identified through spectral analysis (IR, UV, 1HNMR, 13CNMR, MS) as lupane-17-(29-propylol) (1), octacosanoic acid (2), 23-lanostene-3-alcohol (3), 22, 24-cyc-loartenone-3-α-p-hydroxy-cassia-acid (4), hexodecanoic acid (5).
A New Method to Determine BPA in Evidence Theory
Wen Jiang,Yong Deng,JinYe Peng
Journal of Computers , 2011, DOI: 10.4304/jcp.6.6.1162-1167
Abstract: Dempster Shafer theory of evidence has been widely used in many data fusion application systems. However, how to determine basic probability assignment, which is the main and the first step in evidence theory, is still an open issue. In this paper, based on the distance measure between the sample data under test and the model of attribute of species, a new method to obtain BPA is proposed. A numerical example is used to illustrate the efficiency of the proposed method.
18F-FDG PET/ CT in Staging of Lung Cancer
Peng XIE,Weiwei ZHAO,Houfu DENG
Chinese Journal of Lung Cancer , 2009,
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