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| 1 | A wave energy resource assessment in the China's seas based on multi-satellite merged radar altimeter data显示文摘Wave energy resources are abundant in both offshore and nearshore areas of the China's seas. A reliable assessment of the wave energy resources must be performed before they can be exploited. First, for a water depth in offshore waters of China, a parameterized wave power density model that considers the effects of the water depth is introduced to improve the calculating accuracy of the wave power density. Second, wave heights and wind speeds on the surface of the China's seas are retrieved from an AVISO multi-satellite altimeter data set for the period from 2009 to 2013. Three mean wave period inversion models are developed and used to calculate the wave energy period. Third, a practical application value for developing the wave energy is analyzed based on buoy data. Finally, the wave power density is then calculated using the wave field data. Using the distribution of wave power density, the energy level frequency, the time variability indexes, the total wave energy and the distribution of total wave energy density according to a wave state, the offshore wave energy in the China's seas is assessed. The results show that the areas of abundant and stable wave energy are primarily located in the north-central part of the South China Sea, the Luzon Strait, southeast of Taiwan in the China's seas; the wave power density values in these areas are approximately 14.0–18.5 k W/m. The wave energy in the China's seas presents obvious seasonal variations and optimal seasons for a wave energy utilization are in winter and autumn. Except for very coastal waters, in other sea areas in the China's seas, the energy is primarily from the wave state with 0.5 m≤H s≤4 m, 4 s≤T e≤10 s where H s is a significant wave height and T e is an energy period; within this wave state, the wave energy accounts for 80% above of the total wave energy. This characteristic is advantageous to designing wave energy convertors(WECs). The practical application value of the wave energy is higher which can be as an effective supplement for an energy consumption in some areas. The above results are consistent with the wave model which indicates fully that this new microwave remote sensing method altimeter is effective and feasible for the wave energy assessment. | WAN Yong ZHANG Jie MENG Junmin WANG Jing | 2015 | Acta Oceanologica Sinica2015，34，3： | 13 |
| 2 | Exploitable wave energy assessment based on ERA-Interim reanalysis data—A case study in the East China Sea and the South China Sea显示文摘Wave energy resources assessment is a very important process before the exploitation and utilization of the wave energy. At present, the existing wave energy assessment is focused on theoretical wave energy conditions for interesting areas. While the evaluation for exploitable wave energy conditions is scarcely ever performed.Generally speaking, the wave energy are non-exploitable under a high sea state and a lower sea state which must be ignored when assessing wave energy. Aiming at this situation, a case study of the East China Sea and the South China Sea is performed. First, a division basis between the theoretical wave energy and the exploitable wave energy is studied. Next, based on recent 20 a ERA-Interim wave field data, some indexes including the spatial and temporal distribution of wave power density, a wave energy exploitable ratio, a wave energy level, a wave energy stability, a total wave energy density, the seasonal variation of the total wave energy and a high sea condition frequency are calculated. And then the theoretical wave energy and the exploitable wave energy are compared each other; the distributions of the exploitable wave energy are assessed and a regional division for exploitable wave energy resources is carried out; the influence of the high sea state is evaluated. The results show that considering collapsing force of the high sea state and the utilization efficiency for wave energy, it is determined that the energy by wave with a significant wave height being not less 1 m or not greater than 4 m is the exploitable wave energy. Compared with the theoretical wave energy, the average wave power density, energy level, total wave energy density and total wave energy of the exploitable wave energy decrease obviously and the stability enhances somewhat. Pronounced differences between the theoretical wave energy and the exploitable wave energy are present. In the East China Sea and the South China Sea, the areas of an abundant and stable exploitable wave energy are primarily located in the north-central part of the South China Sea, the Luzon Strait,east of Taiwan, China and north of Ryukyu Islands; annual average exploitable wave power density values in these areas are approximately 10–15 k W/m; the exploitable coefficient of variation(COV) and seasonal variation(SV)values in these areas are less than 1.2 and 1, respectively. Some coastal areas of the Beibu Gulf, the Changjiang Estuary, the Hangzhou Bay and the Zhujiang Estuary are the poor areas of the wave energy. The areas of the high wave energy exploitable ratio is primarily in nearshore waters. The influence of the high sea state for the wave energy in nearshore waters is less than that in offshore waters. In the areas of the abundant wave energy, the influence of the high sea state for the wave energy is prominent and the utilization of wave energy is relatively difficult. The developed evaluation method may give some references for an exploitable wave energy assessment and is valuable for practical applications. | WAN Yong ZHANG Jie MENG Junmin WANG Jing | 2015 | Acta Oceanologica Sinica2015，34，9： | 9 |
| 3 | Study on wave energy resource assessing method based on altimeter data——A case study in Northwest Pacific显示文摘Wave energy resource is a very important ocean renewable energy. A reliable assessment of wave energy resources must be performed before they can be exploited. Compared with wave model, altimeter can provide more accurate in situ observations for ocean wave which can be as a novel method for wave energy assessment.The advantage of altimeter data is to provide accurate significant wave height observations for wave. In order to develop characteristic and advantage of altimeter data and apply altimeter data to wave energy assessment, in this study, we established an assessing method for wave energy in local sea area which is dedicated to altimeter data.This method includes three parts including data selection and processing, establishment of evaluation indexes system and criterion of regional division. Then a case study of Northwest Pacific was performed to discuss specific application for this method. The results show that assessing method in this paper can assess reserves and temporal and spatial distribution effectively and provide scientific references for the siting of wave power plants and the design of wave energy convertors. | WAN Yong ZHANG Jie MENG Junmin WANG Jing DAI Yongshou | 2016 | Acta Oceanologica Sinica2016，35，3： | 5 |
| 4 | Preparation of N-Doped Bi_2WO_6 Microspheres for Efficient Visible Light-Induced Photocatalysis显示文摘The N-doped bismuth tungstate(Bi_2WO_6) photocatalysts with high visible light activity were prepared by the hydrothermal method using urea as a nitrogen source.The as-prepared N-doped Bi_2WO_6 samples were characterized by X-ray diffraction,scanning electron microscopy,specific surface area,photocurrent analysis,and UV-Vis diffuse reflectrance spectroscopy.The photocatalytic activity was evaluated by photocatalytic degradation of rhodamine B(RhB)solution under visible light irradiation.The photocatalytic mechanisms were analyzed by active species trapping experiments which revealed that the holes were the main active species of N-doped Bi_2WO_6 products in aqueous solution under visible light irradiation,rather than OH and O_2^-.With the assistance of H_2O_2,the photocatalytic activity for degradation of RhB could be further improved because H_2O_2 reacted with conduction band electrons to generate more hydroxyl radicals. | Bolin Tang Guohua Jiang Zhen Wei Xia Li Xiaohong Wang Tengteng Jiang Wenxing Chen Junmin Wan | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，1： | 4 |
| 5 | Flexible Humidity Sensitive Fiber with Swellable Metal-Organic Frameworks显示文摘Humidity sensors have become an essential need for improving daily life quality.Here,a novel humidity sensitive fiber was fabricated using the soft polydimethylsiloxane(PDMS)as the core layer and the non-swellable polyvinylidenedifluoride(PVDF)embedded with a swellable MIL-88A as the outer layer.Noticeably,the PDMS fiber was chosen as a carrier due to its smoothness,softness and good tensile properties.The isoreticular FeIII dicarboxylate MIL-88 family with swellable metal-organic frameworks(MOFs)can undergo reversible dynamic structural transformations with a response to external humidity change.The resulted fiber with swellable MOFs showed three kinds of deformation for a single solvent and also had good deformation performance for two-component miscible solution with different volume ratios.As a proof of concept,a shape-memory effect at relative humidity from 10 to 90%and the simulated salt solutions instead of relative humidity changes were used to evaluate humidity change.In addition,a deep insight into the self-shape-change mechanism among those phenomena was investigated,wherein expansion deformation of the PDMS fiber as well as the structural transforma-tion of the MIL-88A worked in different conditions. | Sijia Lv Luyizheng Shuai Wenfeng Ding Weiquan Ke Bing Wang Junmin Wan | 2021 | Advanced Fiber Materials2021，3，2： | 2 |
| 6 | The Determi- nants of Household Savings in China:A Dynamic Panel A-nalysis of Provincial Data显示文摘 | CHARLES YUJI HORIOKA JUNMIN WAN | 2007 | Journal of Money Credit and Banking2007，39，8： | 1 |
| 7 | The Determinants of Household Saving in China:A Dynamic Panel Analysis of Provincial Data显示文摘 | Horioka Charles Yuji and Junmin Wan | 2007 | Journal of Money Credit and Banking2007，39，： | 1 |
| 8 | Household Debt and Consumption:A Quantitative Analysis Based on Household Micro Data for Japan显示文摘 | Ogawa Kazuo and Junmin Wan | 2007 | Journal of Housing Economics2007，16，： | 1 |
| 9 | The Incentive to Declare Taxes and Tax Revenue:The Lottery Receipt Experiment in China显示文摘 | Wan Junmin | 2010 | Review of Development Economics2010，14，： | 1 |
| 10 | Nanosized Barium itanate Powder by Mechanical Activation 显示文摘 | Xue Junmin Wang John Wan Dongrnei | 2000 | J Amer Cream Soc2000，83，1： | 1 |
| 11 | Butyhin Compounds Distribution in the Coastal Waters of Bohai Bay,People's Republic of China 显示文摘 | GAO Junmin HU Jianying WAN Yi | 2004 | Bull Environ Contam Toxicol2004，72，5： | 1 |
| 12 | Inducingcrystallization in an amorphous lead zirconate titanate precursor by mechanical activation显示文摘 | XUE Junmin WAN Dongmei LEE See Ee | 1999 | J Am Ceram Soc1999，82，6： | 1 |
| 13 | Research of feature selection for text clustering based on cloud model 显示文摘 | ZHAO Junmin ZHANG Kai WAN Jian | 2013 | Journal of Software2013，8，12： | 1 |
| 14 | The Determinants of Household Saving in China: A Dynamic Panel Analysis of Provincial Data显示文摘 | Horioka Charles Yuji and Junmin Wan | 2007 | Journal of Money Credit and Banking2007，39，8： | 1 |
| 15 | The Determinants ofHousehold Saving in China : A Dynamic Panel Analysis of Pro-vincial Data 显示文摘 | Horioka Yuji Charles Wan Junmin | 2007 | Journal of Money Credit and Banking2007，39，8： | 1 |
| 16 | Mechanochemistry synthesis of PZT from mixed oxides显示文摘 | Xue Junmin Wan Dongmei Lee S E | 1999 | J Am Ceram Soc1999，82，7： | 1 |
| 17 | Preparation of Square and Labyrinth-Like TiO_2 Particles for Photo-Degradation of Organic Pollutants显示文摘Square and labyrinth-like titanium dioxide particles were successfully synthesized by a simple hydrothermal method with assistant of halloysite nanotubes. The morphology and microstructure of as-prepared photo-catalysts were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The photo-catalytic activity of as-prepared catalysts was evaluated by degradation of organic pollutants(Rhodamine B, methylene blue and methanol) under UV light irradiation. | Yongjie Yan Shasha Zhang Guohua Jiang Xia Li Zhen Wei Wenxing Chen Junmin Wan | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，6： | 0 |
| 18 | Analysis of Dynamic Characteristics of the 21st Century Maritime Silk Road显示文摘The 21st century Maritime Silk Road(MSR) proposed by China strongly promotes the maritime industry. In this paper, we use wind and ocean wave datasets from 1979 to 2014 to analyze the spatial and temporal distributions of the wind speed, significant wave height(SWH), mean wave direction(MWD), and mean wave period(MWP) in the MSR. The analysis results indicate that the Luzon Strait and Gulf of Aden have the most obvious seasonal variations and that the central Indian Ocean is relatively stable. We analyzed the distributions of the maximum wind speed and SWH in the MSR over this 36-year period. The results show that the distribution of the monthly average frequency for SWH exceeds 4 m(huge waves) and that of the corresponding wind speed exceeds 13.9 ms^(-1)(high wind speed). The occurrence frequencies of huge waves and high winds in regions east of the Gulf of Aden are as high as 56% and 80%, respectively. We also assessed the wave and wind energies in different seasons. Based on our analyses, we propose a risk factor(RF) for determining navigation safety levels, based on the wind speed and SWH. We determine the spatial and temporal RF distributions for different seasons and analyze the corresponding impact on four major sea routes. Finally, we determine the spatial distribution of tropical cyclones from 2000 to 2015 and analyze the corresponding impact on the four sea routes. The analysis of the dynamic characteristics of the MSR provides references for ship navigation as well as ocean engineering. | ZHANG Xudong ZHANG Jie FAN Chenqing MENG Junmin WANG Jing WAN Yong | 2018 | Journal of Ocean University of China2018，17，3： | 0 |
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