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Landscape ecological assessment and eco-tourism development in the south Dongting Lake Wetland, China

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Journal of Environmental Sciences 2003年第2期15卷 271-278页

作者： HE Ping 1,2, WANG Bao-zhong 1,3.(1.Central south Forestry university, Zhuzhou 412006, China 2.China International Engineering Consulting Corporation, Beijing 100044, China 3.Nanjing university, Nanjing 210093. China Central south Forestry university Zhuzhou 412006

As an important resource and the living environment of mankind, wetland has become gradually a highlight, strongly concerned and intensively studied by scientists and sociologists. The governments in the world and the whole society have been paying more and more attention on it. The Dongting Lake of China is regarded as an internationally important wetland. For a rational development and protection of the wetland, an investigation and studied on its resources and its value to tourism in the south Dongting Lake was conducted, to create an assessment system of the ecological landscapes, and to evaluate qualitatively and quantitatively the value of wetland landscape to the eco-tourism. The results showed that the scenic value of the south Dongting Lake Wetland satisfied the criterion of AAAA grade of China national scenic attraction. The eco-tourism value of the landscape cultures in the south Dongting Lake Wetland was discussed with emphasis. It were formulated that a principle and frame of sustainable exploitation of the wetland landscapes and it was proposed as well that establishing a Wetland Park and developing eco-tourism in the south Dongting Lake. Wetland is a fragile ecosystem with low resistance to the impact of the exploitation. Thus, we must pay intensively attention to the influence of exploitation on the landscape, take the ecological risk in account to employ a right countermeasure and avoid the negative affection.

关键词： south Dongting Lake wetland landscape eco-tourism Wetland Park ecological assessment

广东省农业农村厅广东省财政厅广东省商务厅关于印发《广东省推动农业机械报废更新工作方案》的通知(粤农农规[2024]2号)

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广东省人民政府公报 2024年第9期 7-11页

作者： 1.广东省农业农村厅 2.广东省财政厅 3.广东省商务厅广东省农业农村厅广东省财政厅广东省商务厅

各地级以上市人民政府:为贯彻落实《国务院关于印发的通知》(国发[2024]7号)要求,根据《广东省推动大规模设备更新和消费品以旧换新行动方案》,结合农业机械报废更新工作实际,进一步加快推动我省农业机械报废更新工作,省农业农村厅会同... 详细信息

各地级以上市人民政府:为贯彻落实《国务院关于印发的通知》(国发[2024]7号)要求,根据《广东省推动大规模设备更新和消费品以旧换新行动方案》,结合农业机械报废更新工作实际,进一步加快推动我省农业机械报废更新工作,省农业农村厅会同省财政厅、省商务厅研究制定了《广东省推动农业机械报废更新工作方案》。经省人民政府同意,现印发给你们,请遵照执行。

关键词：以旧换新设备更新农业机械报废更新行动方案消费品广东省财政厅通知

山东省财政厅山东省自然资源厅国家税务总局山东省税务局关于印发《山东省矿业权出让收益征收实施办法》的通知(鲁财综〔2024〕13.)

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山东省人民政府公报 2024年第9期 31-38页

作者： 1.山东省财政厅 2.山东省自然资源厅 3.国家税务总局山东省税务局山东省财政厅山东省自然资源厅国家税务总局山东省税务局

SDPR-2024-013.001各市财政局、自然资源主管部门,国家税务总局山东省各市税务局:经省政府同意,现将《山东省矿业权出让收益征收实施办法》印发给你们,请抓好贯彻落实。2024年3.12日山东省矿业权出让收益征收实施办法第一章总则第一条... 详细信息

SDPR-2024-013.001各市财政局、自然资源主管部门,国家税务总局山东省各市税务局:经省政府同意,现将《山东省矿业权出让收益征收实施办法》印发给你们,请抓好贯彻落实。2024年3.12日山东省矿业权出让收益征收实施办法第一章总则第一条为健全矿产资源有偿使用制度,规范矿业权出让收益征收管理,维护矿产资源国家所有者权益.

关键词：国家税务总局山东省财政厅实施办法资源主管部门矿业权出让自然资源征收管理

Direct CP violation in hadronic B decays

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Science China(Physics,Mechanics & Astronomy) 2006年第3期49卷 357-366页

作者： HONG Bihai1,2 & Lü Caidian3.1. Department of Physics, Lishui university, Lishui 3.3.00,China 2. Department of Physics, Shanghai Jiaotong university, Shanghai 20003., China 3. Institute of High Energy Physics, Beijing 100049,China Department of Physics Lishui University Lishui 323000 China Department of Physics Shanghai Jiaotong University Shanghai 200030 China Institute of High Energy Physics Beijing 100049 China

There are different approaches for the hadronic B decay calculations, recently. In this paper, we upgrade three of them, namely factorization, QCD factorization and the perturbative QCD approach based on kT factorization, using new parameters and full wave functions. Although they get similar results for many of the branching ratios, the direct CP asymmetries predicted by them are different, which can be tested by recent experimental measurements of B factories.

关键词： CP violation hadronic B decay factorization.

Drag reduction of flow boiling with polymer additives

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Journal of Central south university of Technology 2001年第2期8卷 143-146页

作者： QIU Yun ren 1,CHEN Wei ping 2,SI Qin 3.(1.College of Chemistry and Chemical Engineering, Central south university, Changsha 410083. China 2.Editorial Office of Journal of Central south university, Changsha 410083. China 3.College of Chemical E 1. College of Chemistry and Chemical Engineering Central South University 410083 Changsha China 2. Editorial Office of Journal of Central south university 410083 Changsha China 3. College of Chemical Engineering Tianjin University 300072 Tianjin China

The drag reducing effect of polymer additive aqueous solution was investigated in flow boiling, and the polymer additives were two kinds of polyacrylamide (PAM) with relative molecular mass about 2.56×10 6 and 8.55×10 6. The frictional pressure drop was calculated according to the measured total pressure drop. The results show that the flow drag of flow boiling is reduced by adding a small amount of PAM to water when heat flux is in the range of 15.1 kW·m -2 to 47.0 kW·m -2 , when the mass fraction of PAM is higher than 2.0×10 -5 , the drag reducing effect is obvious. Drag reducing effect of PAM, whose relative molecular mass is 8.55×10 6, is slightly better than that of 2.56×10 6 at the same mass fraction, and the greater the flow rate of the additive solution, the better the effect of the drag reduction.

关键词： polymer additive flow boiling drag reduction pressure drop

Online uniform machine covering with the known largest size

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Progress in Natural Science:Materials International 2007年第11期17卷 1271-1278页

作者： Cao Shunjuan1,2 and Tan Zhiyi1,3.1. Department of Mathematics, Zhejiang university, Hangzhou 3.0027, China 2. Department of Mathematics, Zhejiang Forestry university, Hangzhou 3.13.0, China 3. State Key Laboratory of CAD & CG, Zhejiang university, Hangzhou 3.0027, China) Department of Mathematics Zhejiang University Hangzhou 310027 China Department of Mathematics Zhejiang Forestry University Hangzhou 311300 China State Key Laboratory of CAD & CG Zhejiang University Hangzhou 310027 China

This paper investigates the semi-online scheduling problem with the known largest size on two uniform machines. The objective is to maximize the minimum machine completion time. Both lower bounds and algorithms are given. Algorithms are optimal for the majority values of s≥1, where s is the speed ratio of the two machines. The largest gap between the competitive ratio and the lower bound is about 0.064. Moreover, the overall competitive ratio 2 matches the overall lower bound.

关键词： scheduling and covering uniform machine design and analysis of algorithm online competitive ratio

Determination of gemcitabine and its metabolite in human plasma using high-pressure liquid chromatography coupled with a diode array detector

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Acta Pharmacologica Sinica 2004年第12期25卷 18-23页

作者： Neng-ming LIN2,3. Su ZENG2,4, Sheng-lin MA3. Yun FAN3. Hai-jun ZHONG3. Luo FANG3. 2Collegeof Pharmaceutical Sciences, Zhejiang university, Hangzhou 3.003. 3.hejiang Cancer Hospital, Hangzhou 3.0022, China College of Pharmaceutical Sciences Zhejiang University Hangzhou 310031 China

AIM: To establish a high pressure liquid chromatography (HPLC) method for determination of the concentration of gemcitabine (dFdC) and its metabolite(dFdU) in human plasma. METHODS: Plasma 1.0 mL spikedwith floxuridine as an internal standard was extracted with 3.0 mL of methanol-acetonitrile (v/v, 1:9). The supernatant was evapo- rated at 60 oC and the residue was reconstituted with 0.5 mL of the solution used as the mobile phase. After centrifugation, 50 μL of the supernatant was injected into the HPLC system. Separation was achieved on a C18 (4.6 mm×250 mm, 5 μm) column at 25 oC with the flow rate of the mobile phase set to 0.8 mL/min. The compounds were detected at 268 nm. The mobile phase consisted of 40.0 mmol/L acetate ammonium buffer solution (pH 5.5) and acetonitrile (v/v, 97.5:2.5). RESULTS: The linear range was 0.20-10.0 mg/L(r=0.9999) for dFdC and 0.50-50.0 mg/L(r=0.9999) for dFdU. The limit of detection (LOD) was 0.10 mg/L for dFdC and 0.25 mg/L for dFdU, while the limit of quantification (LOQ) was 0.20 mg/L (RSD3.%) for dFdU. The average recovery of dFdC and dFdU by this method were 103.3.% and 98.7 %, respectively. For intra-day and inter-day, the corresponding standard deviations of the measurements of dFdC and dFdU were both less than 5.5 %. CONCLUSION: An analytical method was established to measure the concentrations of dFdC and dFdU in human plasma and was effectively applied to the dFdC and dFdU pharmacokinetic studies of 8 Chinese patients with malignant tumors.

关键词： high pressure liquid chromatography gemcitabine deoxycytidine floxuridine

Interfacial Microstructure and Properties of Ti(C, N)/Ni Bonded by Transient Liquid-phase Diffusion

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Journal of Wuhan university of Technology(Materials Science) 2009年第3期24卷 432-439页

作者：周世权熊惟皓 School of Mechanical Science and Engineering Huazhong University of Science and Technology Department of Mechanical Engineering University of Waterloo School of Materials Science and Engineering Huazhong University of Science and Technology

Effects of the main process parameters（temperature and time） on microstructure and properties of Ti（C, N）/Ni interface bonded by （Cu＋Nb） interlayer in a vacuum diffusion bonding device were investigated. The interfacial microstructures consisted initially of Ni3.b metallic compound and eutectic of Ni3.b ＋ CuNiss, and finally transformed to （Ti, Nb）（C, N）＋Ni3.b near Ti （C, N） and NiCuss ＋ Ni3.b near Ni when diffusion bonding temperature was 1 523.1 573.K. It was clear that Cu was a constituent in the transient liquid phase （TLP） into which Ni was dissolved by forming Cu-Ni transition liquid. Nb was dissolved in Cu-Ni transition liquid rapidly. Ti （C, N） conld be wetted by resultant Ni-Nb-Cu transient liquid phase which was followed by a little （Ti, Nb）（C, N） solid solution formed at interface. This increased the interface combining capability. Ultimately the interface shear strength was able to reach 140 MPa. The theoretle analysis and experimental results show that the growth of interfacial reaction layer Ni3.b accords with parabola law, and the activation energy of diffusion reaction is 115.0±0.5 kJ/mol, while the diffusion reaction speed constant is 12.53.mm/s^1/2.

关键词： vacuum diffusion bonding transient liquid phase (TLP) diffusion bonding interlayer activation energy

Applications of Pattern Recognition in Drug Discovery

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Chemical Research in Chinese Universities 2002年第2期18卷 107-108页

作者： W. Graham Richards Department of Chemistry, university of Oxford, Central Chemistry, south Parks Road, Oxford OX1 3.H, UK Univ Oxford Dept Chem Oxford OX1 3QH England

This is a brief account of the plenary talk given to the meeting of the Chinese Society of Chemical Science and Technology held in Oxford on 6 October 2001. The talk covered the application of pattern recognition techniques to discover molecules which will bind to the binding sites of proteins. Three situations were considered: the structure of the protein being unknown; the structure known but the binding site unknown; and finally, and this is the most important case for the future, both the structure and nature of the target site available in atomic detail. For this case we have developed a massively distributed computer program using a screensaver which now involves over one million personal computers, including over a thousand in China. The project will involve the screening of 3. 5 billion small molecules against 16 protein targets, all of which are implicated in the process of cancer.

关键词： Pattern recognition Drug Protein Gene Binding site