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Entropy Assessment on environmental Influence of Condense Heat in Recovery System in Air-Conditioning Refrigerating Machine

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湖南大学学报（自然科学版） 2009年第S1期36卷 96-101页

作者： TANG Wen-wu1,2.WANG Han-qing1,2.1.school of Energy Science and engineering,Central South {2.,Changsha,Hunan 410083,china 2.school of Civil engineering,Hunan {2. of technology,Zhuzhou,Hunan 412.08,china) school of Energy Science and engineering Central South University Changsha 410083 China school of Civil engineering Hunan University of Technology Zhuzhou 412008 China

This paper presented an entropy evaluation method for the influences of condense heat recovery system on the *** at the damage of the condense heat to the environment,an entropy of resource loss and an emission entropy from the condense heat recovery system in the air conditioning refrigerating machine were *** the evaluation of the entropies,we developed a new algorithm for the parameter identification,called the composite influence coefficient,based on the Least Squares Support Vector Machine *** simulation,the numerical experiments shows that the Least Squares Support Vector Machine method is one of the powerful methods for the parameter identification to compute the damage entropy of the condense heat,with the largest training error being-0.02.(the relative error being-3.56%),and the biggest test error being 0.015(the relative error being 2.5%).

关键词： air-conditioning refrigerating machine condense heat entropy evaluation LS-SVM

Resonance scattering spectral detection of ultratrace IgG using immunonanogold-HAuCl_4-NH_2.H catalytic reaction

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Science china Chemistry 2008年第5期51卷 440-446页

作者： JIANG ZhiLiang1,2.ZHANG ShengSen1,LIANG AiHui2.& HUANG SiYu1 1 school of environment and {2.,Guangxi Normal university,Guilin 541001,china 2.Department of Material and Chemical engineering,Guilin university of technology,Guilin 541001,china 1. school of environment and {2. Guangxi Normal University Guilin 541001 China 2. Department of Material and Chemical engineering Guilin University of Technology Guilin 541001 China

Nanogold particles of 10 nm were used to label goat anti-human IgG (GIgG) to obtain nanogold-labeled GIgG (AuGIgG). In a citrate-HCl buffer solution of pH 2.2.,AuGIgG showed a strong catalytic effect on the reaction between HAuCl4 and NH2.H to form big gold particles that exhibited a resonance scatter-ing (RS) peak at 796 nm. Under the chosen conditions,AuGIgG combined with IgG to form immuno-complex AuGIgG-IgG that can be removed by centrifuging at 16000 r/min. AuGIgG in the centrifuging solution also showed catalytic effect on the reaction. On those grounds,an immunonanogold catalytic RS assay for IgG was designed. With addition of IgG,the amount of AuGIgG in the centrifuging solution decreased; the RS intensity at 796 nm (I796 nm) decreased linearly. The decreased intensity ΔI796 nm was linear with respect to the IgG concentration in the range of 0.08-16.0 ng·mL-1 with a detection limit of 0.02.ng·mL-1. This assay was applied to analysis of IgG in sera with satisfactory sensitivity,selectivity and rapidity.

关键词： immunonanogold nanocatalysis gold-enhancement resonance scattering assay IgG

Discovery of sponge body fossils from the late Meishucunian (Cambrian) at Jinsha, Guizhou, south china

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Progress in Natural Science:Materials International 2005年第8期15卷 708-712页

作者： YANG Xinglian 1,2., ZHAO Yuanlong2. WANG Yue2.and WANG Pingli2.1. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 2.0008, china 2. Institute of resource and {2., Guizhou university, Guiyang 550003, china) Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China. Institute of resource and environment Guizhou University Guiyang 550003 China

Here we report discovery of a sponge body fossil Triticispongia sp. from the base of lower Cambrian Niutitang Formation at Jinsha, Guizhou. Stratigraphically, the fossil horizon is located below Ni-Mo ore layer with the Niutitang Biota above, and is equivalent to the late Meishucunian. The species is global in shape with skeletons composed of stauractins and monaxons. Triticispongia sp. reported here may be the earliest sponge body fossils of Cambrian, which provides new information for understanding early evolution and radiation of sponge animals.

关键词： sponges Cambrian Niutitang Formation Guizhou china.

A Nickel-Manganese-Modified Low Zinc Phosphate Solution for Cathode-Electrophoretic Painting of Steel Substrates

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材料热处理学报 2004年第5B期25卷 1159-1162页

作者： LIBao-song LINAn GANFu-xing ZHANGXu-jian Collegeofresource＆environmentScience WuhanUniversityWuhanChina wuhanBoxinPaintingMaterials＆InstrumentsCorporation WuhanChina

Phosphate coatings are partially dissolved in the cathodic area during the cathode-electrophoretic painting processes causing the result that the coatings adhesion, corrosion protection, alkaline resistance are decreased. Furthermore, the service life of the coated production will be shortened. The addition of Ni2., Mn2. to the phosphating bath to improve the corrosion stability, alkaline resistance, as well as the adhesion of coating layers is studied in the article. These heavy metals do not only catalyse the surface reactions but generate a more corrosion resistant surface. We perfected the trecation phosphate solution by reducing the sludge, accelerating the phosphating reactions, improving corrosion protection and alkaline resistance. More even and finer grain structures, excellent corrosion resistance were obtained compared to the traditional phosphating technique.

关键词：磷化处理电泳涂镀耐蚀性抗碱性钢

Impacts of permafrost changes on alpine ecosystem in Qinghai-Tibet Plateau

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Science china Earth Sciences 2006年第11期49卷 1156-1169页

作者： WANG Genxu1,3 , LI Yuanshou2., WU Qingbai2.& WANG Yibo3 1. Institute of Mountain Hazards and environment, Chinese Academy of Sciences, Chengdu 610041, china 2. Cold and Arid Regions environmental and engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, china 3. resource and environment school, Lanzhou university, Lanzhou 730000, china 1. Institute of Mountain Hazards and environment Chinese Academy of Sciences Chengdu 610041 China 3. resource and environment {2. Lanzhou University Lanzhou 730000 China 2. Cold and Arid Regions environmental and engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

Alpine cold ecosystem with permafrost environment is quite sensitive to climatic changes and the changes in permafrost can significantly affect the alpine ecosystem. The vegetation coverage, grassland biomass and soil nutrient and texture are selected to indicate the regime of alpine cold ecosystems in the Qinghai-Tibet Plateau. The interactions between alpine ecosystem and permafrost were investigated with the depth of active layer, permafrost thickness and mean annual ground temperature (MAGTs). Based on the statistics model of GPTR for MAGTs and annual air temperatures, an analysis method was developed to analyze the impacts of permafrost changes on the alpine ecosystems. Under the climate change and human engineering activities, the permafrost change and its impacts on alpine ecosystems in the permafrost region between the Kunlun Mountains and the Tanggula Range of Qinghai-Tibet Plateau are studied in this paper. The results showed that the per- mafrost changes have a different influence on different alpine ecosystems. With the increase in the thickness of active layer, the vegetation cover and biomass of the alpine cold meadow exhibit a significant conic reduction, the soil organic matter content of the alpine cold meadow ecosystem shows an exponential decrease, and the surface soil materials become coarse and gravelly. The alpine cold steppe ecosystem, however, seems to have a relatively weak relation to the permafrost environment. Those relationships resulted in the fact that the distribution area of alpine cold meadow decreased by 7.98% and alpine cold swamp decreased by 2..11% under the permafrost environment degradation during recent 15 years. In the future 50 years the alpine cold meadow ecosystems in different geomorphologic units may have different responses to the changes of the permafrost under different climate warming conditions, among them the alpine cold meadow and swamp ecosystem located in the low mountain and plateau area will have a relatively

关键词： permafrost environment, alpine cold ecosystem, statistics relationship, climate change, impacts, Qinghai-Tibet Plateau.

Impact of land-use change on hydrological processes in the Maying River basin, china

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Science china Earth Sciences 2006年第10期49卷 1098-1110页

作者： WANG Genxu1,3, ZHANG Yu2. LIU Guimin2.& CHEN Lin3 1. Institute of Mountain Hazards and environment, Chinese Academy of Sciences, Chengdu 610041, china 2. Cold and Arid Regions environmental and engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, china 3. resource and environment school, Lanzhou university, Lanzhou 730000, china 1. Institute of Mountain Hazards and environment Chinese Academy of Sciences Chengdu 610041 China 3. resource and environment {2. Lanzhou University Lanzhou 730000 China 2. Cold and Arid Regions environmental and engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

Since the 1960s, dramatic changes have taken place in land-use patterns characterized by the persistent expansion of cultivated land and a continuous decrease in natural woodland and grassland in the arid inland river basins of china. It is very important to assess the effects of such land-use changes on the hydrological processes so vital for water resource management and sustainable development on the catchment scale. The Maying River catchment, a typical arid inland watershed located in the middle of the Hexi Corridor in northwest china, was the site chosen to investigate the hydrological responses to land-use changes. The annual runoff, base flow, maximum peak flow, and typical seasonal runoff in both spring and autumn flood periods were selected as the variables in the hydrological processes. Statistical-trend analysis and curvilinear regression were utilized to detect the trends in hydrological variables while eliminating the climatic influence. The relationship between cultivated land-use and hydrological variables was analyzed based on four periods of land-use variation data collected since 1965. A runoff model was established composed of two factors, i.e., cultivated land use and precipitation. The impact of land use changes, especially in the large ar- eas of upstream woodland and grassland turned into cultivated lands since 1967, has resulted in a mean annual runoff decrease of 2..12., a base flow decline of 35.32., a drop in the maximum peak discharge of 35.77%, and mean discharge decreases in spring and autumn of 36.05% and 2..87% respectively, of which the contribution of cultivated land expansion to the influence of annual runoff amounts to 77%-80%, with the contribution to the influence of spring discharge being 73%-81%, and that to the influence of base flow reaching 62.-65%. Thus, a rational regulation policy of land use patterns is vitally important to the sustainable use of water resources and the proper development of the entire catchment.

关键词： land-use change, arid inland river catchment, hydrological process, impact, Maying River.

Purification of a Novel Antibacterial Short Peptide in Earthworm Eisenia foetida

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Acta Biochimica et Biophysica Sinica 2004年第4期36卷 297-302页

作者： Yan-Qin LIU1,2. Zhen-Jun SUN1*, Chong WANG1, Shi-Jie LI2. and Yu-Zhi LIU2.College of resource and environment Science, {2. Agricultural university, Beijing 100094, {2. 2.ollege of Animal Science, Hebei Agricultural university, Baoding 071001, {2. College of resource and environment Science China Agricultural UniversityBeijing 100094 China College of Animal Science Hebei Agricultural UniversityBaoding 071001 China

A novel antimicrobial short peptide was purified from earthworm (Eisenia foetida) by a five-step protocol including ammonium sulfate precipitation, ultrafiltration, DE-52.ion exchange chromatography, Sephadex G-10 column chromatography, and C-18 reversed-phase HPLC techniques. The purified peptide was applied to the MALDI-TOF MS to determine the molecular mass and was also subjected to TOF MS-MS analysis to determine the amino acid sequence. As a result, a novel antibacterial peptide, named OEP312., was obtained, with the molecular mass of 510.8 Da and the sequence being “ACSAG”.

关键词： antibacterial peptide earthworm purification

Adsorption of surfactants onto acrylic ester resins with different pore size distribution

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Science china Chemistry 2006年第5期49卷 445-453页

作者： YANG Weiben1,2.3,LI Aimin1,3,CAI Jianguo1,3,MENG Guanhua1,3 & ZHANG Quanxing1,3 1. State Key Laboratory of Pollution Control and resource Reuse,school of the {2.,Nanjing university,Nanjing 2.0093,china 2. Nanjing College of Chemical technology,Nanjing 2.0048,china 3. Jiangsu engineering & technology Research Center for Organic Toxicant Control and resource Reuse,Nanjing 2.0038,china 1. State Key Laboratory of Pollution Control and resource Reuse School of the Environment Nanjing University Nanjing 210093 China 2. Nanjing College of Chemical technology Nanjing 210048 China 3. Jiangsu engineering & technology Research Center for Organic Toxicant Control and {2. Reuse Nanjing 210038 China

In this study, a series of acrylic ester resins with different pore size distribution were prepared successfully by varying the type and the amount of pore-forming agents. In order to inves-tigate the adsorption behavior and mechanism of surfactants on acrylic ester resins, three kinds of surfactants were utilized as adsorbates that were sodium 6-dodecyl benzenesulfonate (6-NaDBS), sodium 1-dodecyl benzene sulfonate (1-NaDBS) and sodium 1-dodecyl sulfonate, respectively. It was observed that the surface area was available in a particular pore size and an appropriate pore size of resins appeared to be more important for the adsorption of surfactants. As compared to commercial acrylic ester resins XAD-7 and HP2.G, 50# and 38# resins exhibited more excellent adsorption properties toward 1-NaDBS and 6-NaDBS. The experimental equilibrium data were fitted to the Langmuir, and double-Langmuir models. Two models provided very good fittings for all resins over the temperature range studied. The investigation indicated that electrostatic attraction and hydrogen bond between resins and surfactants were the main forces and had an obvious effect on adsorption proc-ess.

关键词： acrylic ester resin, surfactant, adsorption, pore size distribution, isotherm.

Synthesis and Characteristics of Organic Bentonite Gel

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Journal of wuhan university of {2.(Materials Science) 2006年第1期21卷 92-94页

作者：雷东升 College of resource and environment {2.ing Wuhan University of Technology Wuhan 430070 ChinaNational Engineering Research Center of Non-metallic Minerals for Further ProcessingSuzhou 215004China

The bentonite was modified using Ca-bentonite as a matrix and octadecyl/ hexndecyl ammonium chloride as the cover agent, based on hydrothermal process. The organic gel with 5.0 Pa· s viscosity was synthesized by dispersing it into the dimethyl benzene- methyl alcohol system fully. The optimum process conditions for organic modification were that the coating agent dosage is 2.g/ L, reaction time is 90 minutes and the pH value of pulp is 10. X-ray diffraction （ XRD ） analysis indicates that the d （001） value of the modified bentonite is 2.. 532.A. The influence of gel temperature on its viscosity characteristic was studied. By analyzing the transmssion electron microscopy （TEM） images and observing the dispersed gel, the nanometer effect of the organic gel was discussed.

关键词： bentonite organic gel synthesis viscosity nanometer effect