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CuInSe_2 thin films obtained by pulse-plating electrodeposition technique with novel pulse wave

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Chinese Science Bulletin 2010年第18期55卷 1854-1858页

作者： wang XiaoLi wang guangjun TIAN BaoLi WAN ShaoMing DU ZuLiang Key Laboratory for Special Functional Materials of Ministry of Education Henan University Kaifeng 475004 China

CuInSe2 films were electrodeposited onto indium tin oxide(ITO) substrate in constant current mode using bell-like wave modulated square wave in aqueous *** films obtained at different pulse frequencies were characterized by scanning electron microscopy(SEM),X-ray energy dispersive spectroscopy(EDS) and X-ray diffraction(XRD).UV-Vis-NIR absorption spectro scopy was used to study the optical properties of these *** results showed that the chalcopyrite phase CuInSe2 films with a smooth surface and stoichiometric composition could be obtained at appropriate pulse *** crystallinity of CuInSe2 films could be further improved after annealing *** this,we also found that the films obtained using the pulse-plating electrodeposition technique had a faster deposition rate and better film adhesion ability than that using the traditional CIS electrodeposition technique,which is significant to the low-cost CIS thin film solar cell production.

关键词： CuInSe2薄膜脉冲电镀技术 CulnSe2 脉冲波扫描电子显微镜近红外吸收光谱脉冲频率铟锡氧化物

Effect of Bioactive Peptides(BPs) on the Development of Pacific White Shrimp(Litopenaeus vannamei Boone, 1931)

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Journal of Ocean University of China 2016年第3期15卷 495-501页

作者： wang guangjun YU Ermeng LI Zhifei YU Deguang wang Haiying GONG wangbao Key Laboratory of Tropical & Subtropical Fish Breeding & Cultivation of Chinese Academy of Fishery Sciences Pearl River Fisheries Research Institute

The present study was conducted to evaluate the feasibility of replacing fish meal(FM) with bioactive peptides(BPs) in diet of white shrimp(Litopenaeus vannamei). The changes in growth performance, body composition, non-specific immunity, and water quality were examined after the shrimp were fed four diets, in which 0%(control), 33.3%, 66.7% and 100% of FM was replaced by BPs, respectively. The groups were designated as Con, 1/3BPs, 2/3BPs, and 3/3BPs. A total of 720 shrimp with an initial body weight of 1.46 ± 0.78 g were fed the experimental diets for 56 days. The results revealed that: 1) the weight gain rate(WGR) in 1/3BPs, 2/3BPs, and 3/3BPs was significantly higher than that in Con(P < 0.05), while no significant difference was found on survival rate and feed conversion ratio(FCR); 2) the whole-body crude protein(CP) and crude lipids(CL) were significantly different among groups, while there was no significant difference between crude ash and phosphorus contents; 3) the levels of acid phosphatase(ACP), lysozyme(LZM), superoxide dismutase(SOD), phenol oxidase(PO) and bactericidal activity increased significantly with the inclusion of BPs; 4) in terms of water quality, no significant difference was found in p H and dissolved oxygen among diets during the whole experimental period. Moreover, even though nitrite and ammonium levels tended to increase with time, there was no significant difference among groups. The results indicated that BPs is an applicable alternative of protein source, which can substitute FM in the diets of L. vannamei; it is able to effectively promote growth performance and improve immunity. Moreover, BPs in the diets had no negative impact on water quality.

关键词： bioactive peptide fish meal Litopenaeus vannamei growth performance non-specific immunity water quality

A NEW EMPIRICAL REGULARITY IN RAPIDITY DISTRIBUTIONS OF HIGH ENERGY MULTIPARTICLE PRODUCTIONS

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Chinese Physics Letters 1989年第7期6卷 293-296页

作者： HE Yudong wang guangjun ZHU Qingqi Institute of High Energy Physics Academia SinicaBeijing

The rapidity distribution of multiparticle production at the ISR and SppS collider energies are studied,and the data reveal a new empirical scaling behaviour in rapidity distributions in terms of the reduced *** relev... 详细信息

关键词： behaviour scaling distribution

Heavy metal accumulation by panicled goldenrain tree(Koelreuteria paniculata) and common elaeocarpus(Elaeocarpus decipens) in abandoned mine soils in southern China

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Journal of Environmental Sciences 2009年第3期21卷 340-345页

作者： TIAN Dalun ZHU Fan YAN Wende Fang Xi XIANG Wenhua DENG Xiangwen wang guangjun PENG Changhui Section of Ecology Research Central-South University of Forestry& Technology Hunan 410004 China Institute of Environment Sciences Department of Biology Sciences University of Quebec at Montreal Case postale 8888 succ Centre-Ville Montreal (QC) H3C 3P8 Canada

Phytoremediation can be used as a sustainable technology for mine spoil remediation to remove heavy metals. This study investigated the concentration of 7 heavy metal contamination in soil and plant samples at an abandoned mine site. We found that, after vegetation remediation at the abandoned mine site, the reduction rates for 7 heavy metals were in the range of 4.2%-86%, where reduction rates over 50% were achieved for four heavy metals （Zn, Mn, Cd, Ni）. Transfer coefficients of the panicled goldenrain tree （Koelreuteria paniculata Laxm） and the common elaeocarpus （Elaeocarpus decipens） for Zn, Mn, Ni, and Co were more than 1. Enrichment coefficients of both trees for Mn were higher than 1. Our results suggest that the panicled goldenrain tree and the common elaeocarpus tree may act as accumulators in remediation. Moreover, the woody vegetation remediation in abandoned mining areas play an important role in improving scenery besides removing heavy metal from contaminated soil.

关键词： panicled goldenrain tree (Koelreuteria paniculata) common elaeocarpus (Elaeocarpus decipens) heavy metal elements accumulation abandoned mine sites

Impacts of changed litter inputs on soil CO2 efflux in three forest types in central south China

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Science Bulletin 2013年第7期58卷 750-757页

作者： YAN WenDe CHEN XiaoYong TIAN DaLun PENG YuanYing wang guangjun ZHENG Wei National Engineering Laboratory for Applied Forest Ecological Technology in Southern China Natural Sciences Division College of DuPage College of Arts and Sciences Governors State UniversityUniversity Park College of Life Science and Technology Central South University of Forestry and Technology

Climate change is expected to cause the alteration of litter production in forests,which may result in substantial changes in soil CO2 efflux (FCO2) process as litter represents a major pathway of carbon from vegetation to the *** this study,we conducted an aboveground litter manipulation experiment to examine the influence of litter addition and exclusion on soil FCO2 in Camphor tree,Masson pine,and mixed Camphor tree and Masson pine forests in central south *** input manipulation included three treatments:non-litter input (litter exclusion),double litter input (litter addition),and natural litter input (control).On average,litter exclusion significantly reduced soil FCO2 rate by approximately 39%,24% and 22% in Camphor tree forests,the Mixed forests,and Masson pine forests,*** a yearly basis,double litter addition significantly increased soil CO2 by 12% in the Mixed forests (P=0.02) but not in both Camphor tree and Masson pine forests (P>0.05),when compared with their corresponding control ***,litter addition increased soil FCO2 rates in the months of June-August in Camphor tree and Masson pine forests,coinciding with high soil temperature of summer *** exclusion reduced soil FCO2 more than litter addition increased it in the study *** of soil respiration to litter input treatments varied with forest *** input treatments did not alter the seasonal patterns of soil temperature and soil water *** results indicated that changes in aboveground litter as a result of global climate change and/or forest management have a great potential to alter soil respiration and soil carbon balance in forest ecosystems.

关键词： soil respiration litter exclusion litter addition subtropical forests soil environmental factors

Extraction of flocculants from a strain of Bacillus thuringiensis and analysis of their properties

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Aquaculture and Fisheries 2017年第4期2卷 179-184页

作者： Jingrong Wu guangjun wang Zhifei Li Ermeng Yu Jun Xie Zonglin Zheng Pearl River Fisheries Research Institute Chinese Academy of Fishery SciencesGuangzhouGuangdong 510380China Southwest University Rongchang Campus Chongqing 402460China

In a preliminary screening study,our laboratory isolated from the biofloc in aquaculture waters a strain of Bacillus thuringiensis,which produced highly efficient *** the present study,we extracted the crude flocculants from this strain and analyzed their *** analysis indicated that the flocculants were mainly distributed in the supernatant of the fermentation *** flocculants were extracted using an ethanol extraction method,and the chemical compositions and morphology of the crude flocculants were analyzed using the Molish reaction,Fehling reaction,ninhydrin reaction,biuret reaction,phenol-sulfuric acid assay,Coomassie brilliant blue staining,ultraviolet scanning,infrared scanning and scanning electron *** carbohydrate composition of the polysaccharides in the flocculants was analyzed with thin layer *** results indicated that flocculants were solid substances with an ivory white color and their texture was loose and *** under scanning electron microscopy revealed that their ultra-morphology consisted of small,long and fiber-like *** and physical analyses indicated that polysaccharides accounted for 34.5%of the components in the crude *** monosaccharides present in crude flocculants included mainly glucose,galactose and mannitose.

关键词： Bacillus thuringiensis Bio-flocculant Property analysis Polysaccharides

Soil respiration dynamics in Cinnamomum camphora forest and a nearby Liquidambar formosana forest in Subtropical China

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Chinese Science Bulletin 2010年第16期55卷 736-743页

作者： TIAN DaLun wang guangjun YAN WenDe XIANG WenHua PENG ChangHui Faculty of Life Science and Technology Central South University of Forestry & Technology Changsha 410004 China Institut des sciences de l'environnement Departement des sciences biologiques Universite du Quebec a Montreal Montreal QC H3C 3P8 Canada

Climate change can significantly affect carbon cycling of forest *** diurnal and seasonal dynamics of soil respiration (Rs) in Cinnamomum camphora and Liquidambar formosana forests were investigated by using infrared gas exchange analyzer of Li-Cor 6400-09 each month in *** temperature and moisture were also *** variations in Rs varied with daily soil temperature in the two *** the growing season,soil respiration peaked on July 28 due to higher soil temperature and moisture *** Rs variations were predominantly influenced by soil *** soil respirations in *** and *** forests were strongly related to soil temperature (x) at 5-cm depth (Rs=0.1598e 0.1377x (R 2=0.9289,P=0.001) and Rs=0.2177e 0.0962x (R 2=0.927,P=0.000)),while annual mean Rs rate was 2.614 and 1.397 μmol m-2 s-1 and Q 10 values were 3.96 and 2.62 for the two forests,***,Rs was not influenced by seasonal changes in soil moisture (w) in the two forests in *** developed two equations (Rs=-0.020w 2 +0.497w+0.562 (R 2=0.109,P>0.05),Rs=-0.001w 2 +0.072w +0.731(R 2=0.053,P>0.05)) to describe the relationship between Rs and soil moisture.A positive relationship between Rs and soil moisture were observed when soil moisture was below 12.43% and 18.00%,but when soil moisture exceeded threshold values of 12.43% and 18.00%,soil moisture became the restraint factor for ***-term observations of soil respiration and moisture are required to understand the temporal dynamics of soil respiration.

关键词：亚热带森林土壤呼吸中国树林

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Analysis on China's Car Market in 2003

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China's Foreign Trade 2003年第2期 38-40页

作者： Gong guangjun and wang Li

The car boom experienced in 2002 has certainly added an inerasable touch on China's automobile industry. It is estimated that with more favorable policies, availability of more choices and further price cuts, China's car market will continue its momentum to prosper in the New *** situation in the car market was full of drama at the turn of the New Year with sweeping price cuts. This was largely due to the availability of more new brands and models. However, it is still too early to

关键词：中国汽车市场汽车消费市场价格市场空间汽车工业 2003年

Convective high-speed flow and field-aligned high-speed flows explored by TC-1

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Chinese Science Bulletin 2008年第15期53卷 2371-2375页

作者： ZHANG LingQian LIU ZhenXing MA ZhiWei W. BAUMJOHANN M.W. DUNLOP wang guangjun wang Xiao H. REME C. CARR Centre for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China Institute for Fusion Theory and Simulation Zhejiang University Hangzhou 310027 China Space Research Institute Austrian Academy of Sciences 68042 Graz Austria Space Sciences Division Rutherford Appleton Laboratory Chilton Didcot Oxfordshire OX11 0QX United Kingdom Centre d'Etude Spatiale des Rayonnements F-78140 Toulouse Codex France Imperial College London SW7 2BZ United Kingdom

From June 1, 2004 to October 31, 2006, a total 465 high-speed flow events are observed by the TC-1 satellite in the near-Earth region (?13 RE < x < ?9 RE, |Y |<10 RE, |Z|<5 RE). Based on the angle between the flow and the magnetic field, the high-speed flow events are further divided into two types, that is, field-aligned high-speed flow (FAHF) in the plasma sheet boundary and convective bursty bulk flow (BBF) in the center plasma sheet. Among the total 465 high-speed flow events, there are 371 FAHFs, and 94 BBFs. The CHF are mainly concentrated in the plasma sheet, the intersection angle between the flow and the magnetic field is larger, the magnetic field intensity is relatively weak. The FHF are mainly distributed near the boundary layer of the plasma sheet, the intersection angle between the flow and magnetic field is smaller, and the magnetic field intensity is relatively strong. The convective BBFs have an important effect on the substorm.

关键词：高速流对流磁场地球科学