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Journal of Thermal Science 2010年第2期19卷 160-166页

作者： Xiaohong gui Wei QU bin LIN Xiugan YUAN Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100190 China University of Notre Dame Notre Dame IN 46556 USA Institute of Man-Machine-Environment Engineering Beihang University Beijing 100191 China

High-temperature Phase Change Material (PCM) is used as a thermal storage medium of a heat-pipe receiver in an advanced solar dynamic *** both void cavity and natural convection considered,thermal performance of the heat-pipe receiver is numerically analyzed under *** results indicate that the PCM contained in the integrated heat pipe performs an averaging function of heat *** thermal performance of the heat-pipe receiver is stable and *** a heating cycle is stable,the temperature fluctuations both on heat-pipe wall and in PCM canister remain less than 13 K throughout a sunlight and eclipse *** utility of PCM is essentially *** maximum melting ratio of PCM is 92%.Under gravity,PCM melts more quickly with the effect of natural *** convection accelerates the process of phase *** results are compared with the experimental results *** accuracy of numerical model under gravity is *** experiment for the PCM canister on the ground can be well prepared with our numerical simulation.

关键词： Heat-pipe Receiver Phase Change Material Void Cavity Natural Convection

A Novel Hydroperoxyl Substituted Cembranolide Diterpene from Marine Soft Coral Lobophytum crassum

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Chinese Chemical Letters 2005年第11期16卷 1489-1491页

作者： Shuai Wen YIN Yan Ping SHI Xiao Ming LI bin gui wang Key Laboratory of Experimental Marine Biology Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 Graduate School of the Chinese Academy of Sciences Beijing 100039

A new cembranolide diterpene with a hydroperoxyl substitution was isolated from the marine soft coral Lobophytum crassum. The structure was elucidated on the basis of chemical and spectral methods.

关键词： Lobophytum crassum 2-hydroperoxysarcophine cembranolide diterpene.

Two new aristolane sesquiterpenes from Laurencia similis

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Chinese Chemical Letters 2007年第2期18卷 178-180页

作者： Nai Yun Ji Xiao Ming Li Lan Ping Ding bin gui wang Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

Two new aristolane sesquiterpenes, namely, aristolan-10-ol-9-one and aristolan-8-en-1-one, were isolated from the red alga Laurencia similis. Their structures were established on the basis of various NMR spectroscopic... 详细信息

关键词： Laurencia similis Aristolane Aristolan-10-ol-9-one Aristolan-8-en-1-one

Can the Prior Cathodic Polarisation Treatment Remove the Air-Formed Surface Film and Is It Necessary for the Potentiodynamic Polarisation Test?

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Acta Metallurgica Sinica(English Letters) 2020年第6期33卷 839-845页

作者： Zheng-Rong Ye Zhi-Chao Qiu Zheng-bin wang Yu-gui Zheng Ran Yi Xiang Zhou Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

This paper clarifies two issues related to the prior cathodic polarisation treatment(PCPT) for the potentiodynamic polarisation test: whether PCPT can(1) remove the air-formed surface film and(2) affect the polarisation test results. X-ray photoelectron spectroscopy analyses of fluoride ion-labelled samples show that PCPT cannot remove the surface film completely due to the low reaction rate. Potentiodynamic polarisation tests demonstrate that PCPT with proper operating parameters,-1.0 V SCE for 5 min with subsequent open circuit potential(OCP) stabilisation in this study, is necessary because it can improve the test reproducibility without affecting the corrosion parameters by unifying the initial surface state. However, PCPT with lower potentials, longer time or no OCP stabilisation has significant effects on the electrochemical corrosion parameters due to the hydrogen absorption under the conditions of this study.

关键词： Stainless steel Prior cathodic polarisation treatment Surface film Potentiodynamic polarisation

Correlation between the Standard Formation Enth alpy and the Path Index of Pyridine Derivatives

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Wuhan University Journal of Natural Sciences 2000年第2期5卷 229-232页

作者： LI Liang chao 1 ,LIAO gui ying 1,2 ,JIANG Sheng bin 2 ,wang Ying xi 2 ,SUN Ju tang 3 1. Departmnt of Chemistry, Jingzhou Normal College, Jingzhou, China, 434100 2. Hubei, Research Institute of Chemistry, Wuhan, China, 430074 Department of Chemistry Jingzhou Normal College Jingzhou China Hubei Research Institute of Chemistry Wuhan China College of Chemistry Wuhan University Wuhan China

A formulated as △fH m ? (PPDs,g)=a+ΣbiPi + cifi is put forward for estimating standard formation enthalpies of pyridine-derivatives (PDDs), in which,P i is path index andc i f i is an amended term of interaction between substituent and N atom on pyridine ring. The Calculations based on the model were carried out for some pyridine-derivatives. The values of standard formation enthalpy calculated are consistent with those in literature.

关键词： Key words pyridine derivatives standard formation enthalpy path index

Numerical simulation of the influences of sinker weight on the deformation and load of net of gravity sea cage in uniform flow

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Acta Oceanologica Sinica 2006年第3期25卷 125-137页

作者： LI Yucheng 1,2* , ZHAO Yunpeng 1 , gui Fukun 1 , TENG bin 1 , DONG Guohai 1 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China 2. R&D Center of Civil Engineering Technology, Dalian University, Dalian 116622, China State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China R and D Center of Civil Engineering Technology Dalian University Dalian 116622 China

A numerical model for determining fishing net configuration and load is developed, based on the lumped masses method. The model is used to analyze the influences on the net of gravity sea cage by different sinker weights in uniform flow. The net of gravity sea cage is simulated under different current velocities and sinker weights. In order to verify the validity of the numerical results, model test results made by Lader and Enerhaug are cited and compared with the numerical ones. The results of numerical simulation agree well with the experimental ones and the agreement is within an error range of 13% under different velocities and sinker weights. The numerical results indicate that increasing the sinker weight can effectively reduce the net deformation, but the total drag force on the net will increase accordingly. Results will give references for better knowledge of the hydrodynamic behavior of gravity sea cage.

关键词： sea cage numerical simulation lumped mass method sinker weight

Preparation and Effectiveness of Slow-release Polymeric Fertilizer Containing Multiple Nutrients Special for Maize

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高校化学工程学报 2007年第3期21卷 477-480页

作者： ZHAO gui-zhe LIU Ya-qing ZHANG bin Research Center for Engineering Technology of Polymeric Composites of Shanxi Province College of Materials Science and Engineering North University of China Taiyuan 030051 China

Slow-release polymeric fertilizer containing multiple nutrients was synthesized through condensation polymerization from raw materials of homemade low-molecular urea-formaldehyde and the compounds of potassium dihydrogen phosphate and phosphoric acid. Adjustment of the proportion of raw materials makes the ingredients of the fertilizer are N:P_2O_5:K_2O =1:0.75:0.13, which satisfy the nutritional requirement for maize growth. Field-experiment results prove that the yield of maize increases by 16.56% when using the polymeric fertilizer special for maize alone, by 56.51% when applying the polymeric fertilizer special for maize plus farmyard manure, and by 49.11% when applying the SV fertilizer special for maize plus manure.

关键词：玉米缓释肥料复合肥制备肥效田间试验

A method for determining vegetation growth process using remote sensing data: A case study in the Three-River Headwaters Region, China

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Journal of Mountain Science 2019年第9期16卷 2001-2014页

作者： CHEN Tian-tian YI gui-hua ZHANG Ting-bin wang Qiang BIE Xiao-juan Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China University of Chinese Academy of Sciences Beijing 100049 China School of Geography and Tourism Chongqing Normal University Chongqing 401331 China College of Management Science Chengdu University of Technology Chengdu 610059 China College of Earth Science Chengdu University of Technology Chengdu 610059 China Chongqing Institute of Surveying and Planning for Land Resources and Housing Chongqing 400020 China

Accurate measurements of the associated vegetation phenological dynamics are crucial for understanding the relationship between climate change and terrestrial ecosystems. However, at present, most vegetation phenological calculations are based on a single algorithm or method. Because of the spatial, temporal, and ecological complexity of the vegetation growth processes, a single algorithm or method for monitoring all these processes has been indicated to be elusive. Therefore, in this study, from the perspective of plant growth characteristics, we established a method to remotely determine the start of the growth season(SOG) and the end of the growth season(EOG), in which the maximum relative change rate of the normalized difference vegetation index(NDVI) corresponds to the SOG, and the next minimum absolute change rate of the NDVI corresponds to the EOG. Taking the Three-River Headwaters Region in 2000–2013 as an example, we ascertained the spatiotemporal and vertical characteristics of its vegetation phenological changes. Then, in contrast to the actual air temperature data, observed data and other related studies, we found that the SOG and EOG calculated by the proposed method is closer to the time corresponding to the air temperature, and the trends of the SOG and EOG calculated by the proposed method are in good agreement with other relevant studies. Meantime, the error of the SOG between the calculated and observed in this study is smaller than that in other studies.

关键词： Vegetation phenology Normalized difference vegetation index (NDVI) Start of the growth season (SOG) End of the growth season (EOG) Three-River Headwaters Region(TRHR)

Uncommon N-Methoxyindolediketopiperazines from Acrostalagmus luteoalbus,a Marine Algal Isolate of Endophytic Fungus

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Chinese Journal of Chemistry 2021年第10期39卷 2808-2814页

作者： Jin Cao Xiao-Ming Li Xin Li Hong-Lei Li Belma Konuklugil bin-gui wang CAS and Shandong Province Key Laboratory of Experimental Marine Biology Institute of OceanologyChinese Academy of SciencesNanhai Road 7QingdaoShandong266071 China Laboratory of Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyWenhai Road 1QingdaoShandong266237 China Faculty of Pharmacy University of AnkaraEmniyet Mah.Degol Cd.No.4Posto Kod 06560 YenimahalleAnkaraTurkey Center for Ocean Mega-Science Chinese Academy of SciencesNanhai Road 7QingdaoShandong266071 China

Main observation and conclusion Four new N-methoxyindolediketopiperazines(acrozines D—G,1—4)and six known congeners(5—10)were purified from the organic extract of Acrostalagmus luteoalbus TK-43,which was a marine algal-derived fungus obtained from Codium *** structures were determined by interpretation of NMR and mass spectroscopic *** structures of compounds 1,2,and 4 including their absolute configurations were confirmed by single-crystal X-ray diffraction,while the absolute configuration of compound 3 was elucidated by comparative analysis of ECD and TDDFT-ECD *** 1—4,with a unique methoxy substitution at N-2,were rarely discovered among indolediketopiperazine *** these compounds were evaluated for antimicrobial activities against human-and aquatic-pathogenic bacteria and plant-related pathogenic fungi,with compounds 5 and 7 exhibiting potent activity against Edwardsiella icataluri(MIC=3 and 5μmol/L,respectively),while compound 9 displayed a broad spectrum of antibacterial *** four new compounds were further tested for anti-acetylcholinesterase(AChE)properties,and compound 3 exhibited inhibitory activity with IC_(50)value of 8.4μmol/L.

关键词： Marine alga Endophytic fungus Acrostalagmus luteoolbus Natural products Biological activity

Synthesis and Properties of Poly(aryl ether ketone) Copolymers Containing 2,7-Naphthalene Moieties

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Chemical Research in Chinese Universities 2006年第1期22卷 114-117页

作者： LIU Si-jie NIU Ya-ming ZHU Xiao-liang wang gui-bin JIANG Zhen-hua Alan G. MacDiarmid Institute College of Chemistry Jilin University Changchun 130012 P.R. China

Poly（ aryl ether ketone） copolymers containing 2,7-naphthylene and hydroquinone（HQ） moieties with various compositions were prepared by the reaction of 4,4＇-difluorobenzophenone（DFB） 2,7-naphthylene and hydroquinone in the presence of sodium carbonate and potassium carbonate （ 19： 1, mass ratio） in diphenyl sulfone （DPS）. The thermal analysis results of the copolymers show that the glass transition temperatures（Tgs） increase, while the melting temperatures（Tra） and tile 5.0% weight loss temperatures （ Td ） decrease with the increase of the 2,7-naphthalene moieties. For the copolymers synthesized at a molar fraction of 2,7-naphthalene in the difluoro monomers being over 0.30, no peaks corresponding to the cold crystallization temperature and the melting temperature could be detected, indicating that these copolymers are almost amorphous. The crystal structures of the copolymers with a molar fraction of 2,7-naphthalene being less than 0. 30 are rhombic.

关键词： Poly( aryl ether ketone) Naphthalene derivatives Friedel-crafts acylation