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The influence of upstream slope on the local scour at drop structure

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Journal of Mountain Science 2016年第12期13卷 2237-2248页

作者： CHEN jen.yan HSU Hsi-hsin HONG Yao-ming Department of Civil Engineering National Chung Hsing University College of Management Nanhua University

The drop structure will fail as a result of local scoring *** paper discusses the influence of a drop structures' upstream slope to local *** equations of the scour hole were developed by laboratory experiment,theoretical assumptions,and regression *** equations include the maximum scour depth and length during the scouring period,the maximum equilibrium scour depth and length,and the unit width scour *** four channel slopes(0%,2%,4%,and 6%) before the drop structure has been included in the analysis.A series of laboratory experiments were conducted to obtain 48 groups of experiments and 419 scour hole profiles during the scouring *** material used in the scour section is uniform non-cohesive and with a median diameter of d50 = 0.5 *** results have been used to develop empirical equations via regression analysis to determine the coefficients of theoretical *** high correlation coefficient indicates that the equations developed in this study are suitable for verifying the characteristics of a scour hole at drop structure in the sloped *** semi-empirical equation is more accurate than the empirical *** to a horizontal channel,a sloped channel tends to cause a greater equilibriummaximum scour length,shorter equilibrium maximum scour depth,and faster unit-wide scour rate.

关键词： Drop structure Jet flow Scour hole Local scour Steep channel

Expanding Visions of American Learners of Collegiate Chinese:Heritage Students

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世界汉语教学 2001年第3期15卷 89-105页

作者： Theresa Chang whei jen

美国华裔大学生的汉语语言和文化背景十分复杂 ,对中文的需求也是多样化的 ,因此 ,高等学校的中文教学如何适应华裔学生的具体情况 ,已经成为迫切需要解决的问题。有鉴于此 ,本文作者对美国东海岸 6所高等学校的华裔学生和中文教学状况... 详细信息

美国华裔大学生的汉语语言和文化背景十分复杂 ,对中文的需求也是多样化的 ,因此 ,高等学校的中文教学如何适应华裔学生的具体情况 ,已经成为迫切需要解决的问题。有鉴于此 ,本文作者对美国东海岸 6所高等学校的华裔学生和中文教学状况进行了细致的调查研究。调查分两部分 ,一部分是了解学生的语言背景、中文水平、学习中文的原因、动机、兴趣等情况 ;一部分主要了解各校的中文课程设置、教学形式、考评、分班、教材等方面。调查结果显示 ,华裔学生和非华裔学生在学习中文的年龄、动机、文化等方面都有很大差异 ,华裔学生的学习有着非常突出的特点 ,现行的课程安排不能满足他们的需求 ,教材缺乏针对性 ,考评方法也不适应他们的特点。这些都需要有针对性地找出应对措施 ,改革教学 ,使之适应他们的具体情况。

关键词：华裔学生高等学校中文教学针对性情况中文课适应语言和文化汉语语言背景

Neuroprotective properties of kavalactones

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Neural Regeneration Research 2015年第6期10卷 875-877页

作者： Yew-Min Tzeng Meng-jen.Lee Department of Applied Biochemistry Chaoyang University of Technology

Kava or kava-kava （Piper methysticum） is a plant used for the production of a ritual drink with tranquilizing properties. The kavalactones are the main compounds of the kava drinks （see Table 1 for names and structures of the main kavalactones）. There are many clinical trials on the use of kava product for anti-anxiety, and a systematic review supports the use of kava for the treatment of generalized anxiety （Sarris et al., 2009）. Adverse effects on the liver have been reported, and kava is regulated in a number of countries （Teschke, 2010）.

关键词： Neuroprotective properties of kavalactones CYP NF

Viscosity Approximations by Generalized Contractions for Resolvents of Accretive Operators in Banach Spaces

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Acta Mathematica Sinica,English Series 2009年第4期25卷 553-564页

作者： Adrian PETRUSEL jen.Chih YAO Department of Applied Mathematics Babes-Bolyai University 400084 Cluj-Napoca Romania Department of Applied Mathematics National Sun Yat-sen University Kaohsiung Taiwan 804

In this paper, we prove a strong convergence theorem for resolvents of accretive operators in a Banach space by the viscosity approximation method with a generalized contraction mapping. The proximal point algorithm i... 详细信息

关键词： viscosity approximation method accretive operator generalized contraction resolvent,proximal point algorithm

Fuzzy-based risk prioritization for a hydrogen refueling facility in Malaysia

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第8期14卷 834-834页

作者： Hue-yee Chong Mahidzal Dahari Hwa-jen.Yap Ying-tai Loong Department of Mechanical Engineering Faculty of Engineering University Malaya Kuala Lumpur Malaysia

Hydrogen is starting to be mentioned as an alternative fuel to replace the fossil fuel in future transportation applications due to its characteristics of zero greenhouse gas emission and high energy efficiency. Before hydrogen fuel and its facilities can be introduced to the public, relevant safety issues and its hazards must be assessed in order to avoid any chance of injury or loss. While a traditional risk assessment has difficulty in prioritizing the risk of failure modes, this paper proposes a new fuzzy-based risk evaluation technique which uses fuzzy value to prioritize the risk of various scenarios. In this study, the final risk of each failure modes was prioritized by using the MATLAB fuzzy logic tool box with a combination of two assessments. The first assessment was concerned with the criteria which affected the actual probability of *** assessment considered the availability of the standard that was applied to prevent the likelihood of the scenario occurring. On the other hand, the second assessment was focused on evaluating the consequence of the failure by taking into account the availability of detection and the complexity of the failure rather than only the severity of the scenarios. A total of 87 failure scenarios were identified using failure modes and effect analysis(FMEA) procedures on hydrogen refueling station models. Fuzzy-based assessments were performed through risk prioritizing various failure scenarios with a fuzzy value(0 to 1) and risk level(low, medium, and high)while a traditional risk assessment approach presented the risks only in forms of level(low, medium, and/or high). Availability of the fuzzy value enabled further prioritizing on the risk results that fell in the same level of risk. This study concluded that fuzzy-based risk evaluation is able to further prioritize the decisions when compared with a traditional risk assessment method.

关键词：风险评估方法模糊值加氢站马来西亚设施优先级模糊逻辑工具箱故障模式

Increase of insulin sensitivity in diabetic rats received Die-Huang-Wan, a herbal mixture used in Chinese traditional medicine

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Acta Pharmacologica Sinica 2002年第12期23卷 128-134页

作者： HSU jen.Hao,LIOU Shorong-Shii,CHENG Juei-Tang Graduate Institute of Natural Products Kaohsiung Medical University Kaohsiung City Graduate Institute of Natural Products Kaohsiung Medical University Kaohsiung City Department of Pharmacology College of Medicine National Cheng Kung University Tainan City Taiwan China Department of Pharmacology College of Medicine National Cheng Kung University Tainan City Taiwan 70101 China

AIM: Effects on insulin sensitivity of Die-Huang-Wan, the herbal mixture widely used to treat diabetic disorder in Chinese traditional medicine, were investigated in vivo. METHODS: The obese Zucker rats were employed as insulin-resistant animal model. Also, insulin-resistance was induced by the repeated intraperitoneal injections of long-acting human insulin at 0.5 U/kg three times daily into adult male Wistar rats. Insulin resistance was identified using the loss of tolbutamide (10 mg/kg) or electroacupuncture (EA)-induced plasma glucose lowering action. The plasma glucose concentration was examined by glucose oxidase assay. RESULTS: The plasma glucose-lowering action induced by tolbutamide was significantly enhanced in obese Zucker rats receiving the repeated administration of Die-Huang-Wan at dosage of 26 mg/kg for 3 d. Furthermore, administration of Die-Huang-Wan delayed the formation of insulin resistance in rats that were induced by the daily repeated injection of human long-acting insulin at 0.5

关键词： insulin sensitivity Die-Huang-Wan obese Zucker rats insulin resistance

Microdomain atomic structure of Zr_(50)Pd_(40)Al_(10) metallic glasses and its formation mechanism

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Journal of Materials Science & Technology 2019年第3期35卷 248-253页

作者： Kai Li Fangliang Gao Yu-jen.Chou Kaixiang Shen Guoqiang Li State Key Laboratory of Luminescent Materials and Devices South China University of Technology Engineering Research Center on Solid-State Lighting and Its Informationisation of Guangdong Province South China University of Technology Department of Electronic Materials School of Materials Science and Engineering South China University of Technology School of Physics and Telecommunications Engineering South China Normal University

Zr-based Zr_50Pd_40Al_10 metallic glasses has not only crystalline phases of about 5 nm in diameter but also amorphous phases. In this work, the radial distribution functions(RDFs) of amorphous structure of Zr_50Pd_40Al_10 metallic glasses were firstly measured by electron diffraction, and then Reverse Monte Carlo(RMC) optimization accompanied by density functional theory(DFT) calculations. The amorphous structure has not only short-range order but also good medium-range order. In the RDFs of its amorphous structure, the first and the second peaks are located at 2.96 ? and 4.79 ?, respectively. Partial radical distribution functions(PRDFs) show that the contributions of the first and the second nearest-neighbor distances of various atom pairs to the G(r) peak values, and the first nearest-neighbor distances of Pd–Zr and Zr–Zr atom pairs are the sources of main G(r) peak values between 2? and 6?. The competition mechanism for generating the Pd_25Zr_55 Al_20 amorphous phase and the intermetallic crystalline phase Pd_11Zr_9 is associated with the differences of atomic radius, the proportion, and the melting point of different atoms, as well as the heat of mixing between atoms, leading to an equilibrium state of the two phases. Accordingly, a composite system with intertwined nanocrystals and amorphous phases is in turn formed, and improves the stability of the material.

关键词： Metallic glasses Radial distribution function Electron diffraction Density functional theory Formation mechanism

Development of a system configuration for a solar powered hydrogen facility using fuzzy logic control

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第11期14卷 822-834页

作者： Ying-tai LOONG Mahidzal DAHARI Hwa-jen.YAP Hue-yee CHONG Department of Mechanical Engineering Faculty of Engineering University MalayaKuala Lumpur 50603 Malaysia

Solar energy is a natural resource which can be harnessed to provide clean electricity for hydrogen production ***, this technology is not widely used because of control issues, particularly for hydrogen refuelling stations. At present,direct or DC-DC converter couplings are the most common system configurations for hydrogen refuelling stations. However, these system configurations are costly and suffer from gas shortage at hydrogen refuelling stations. Furthermore, the hydrogen produced by such system configurations varies considerably depending on the levels of solar radiation. In order to address these issues, a new system configuration is proposed, incorporating the feedback signal of the storage level in the control system. The photovoltaic(PV) system, electrolyzer, and storage tank are integrated with a fuzzy logic controller(FLC) to determine the backup current compensation for electrolyzer operation in order to obtain the minimum power required for hydrogen production. The proposed FLC is constructed with three input variables which are the PV current, hydrogen storage level, and the battery state of charge. The rules-based fuzzy inference process is based on the proposed configuration which combines the advantages of direct and DC-DC converter coupling configurations. The simulation results show that the proposed configuration offers better adaptability to variable radiation conditions compared to other methods. This gives a more promising option for ensuring the adequacy of hydrogen supply at hydrogen refuelling stations.

关键词： Hydrogen energy Solar energy Hydrogen refueling facility Fuzzy logic

Effect of transcutaneous electrical nerve stimulation through acupoints of Pucan (BL 61) and Shenmai (BL 62) on intraocular pressure in patients with glaucoma： a randomized controlled trial

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Journal of Traditional Chinese Medicine 2016年第1期36卷 51-56页

作者： Yeh Tsui-Yun Lin jen.Chien Liu Chi-Feng Graduate Institute of Integration of Traditional Chinese Medicine with Western Nursing National Taipei University of Nursing and Health Sciences Taipei City Hospital Taipei 10065 China Department of Ophthalmology Taipei CityHospitaI Taipei 10065 China

OBJECTIVE： To investigate the effects of transcutaneous electrical nerve stimulation （TENS） through acupoints on the intraocular pressure （lOP） in patients with glaucoma. METHODS： A single-blinded, randomized experimental design study was conducted. Patients from the North of Taipei Ophthalmology outpatient department diagnosed with intraocular hypertension were selected and were further enrolled if they met the research subject criteria. The patients who met all criteria, and who met no exclusion criteria became the participants. Participants were randomly assigned into the treated group, wherein the TENS electrodes （Qing Ming Medical Device Co., Ltd., New Taipei City, China） were applied with direct current （DC） on the acupoints Pucan （BL 61） and Shenmai （BL 62） for 20 min. The control group received no TENS electrode treatments. Measurements of lOP were taken four times using a pneumotonometer （Clinico Co., Ltd., New Taipei City, China）, before, immediately after, 30 min after, and 60 min after TENS electrode treatments. RESULTS： Eighty-two participants completed the experiment, lOP decreased more in the group treated with DC （P 〈 0.01） than in the control *** lOPs were not affected by the age of the patients and their usage of medications. CONCLUSION： TENS of acupoints of Pucan （BL 61） and Shenmai （BL 62） could significantly reduce the lOP in patients with glaucoma.

关键词： Glaucoma Intraocular pressure Ocularhypertension Acupuncture points Transcutaneous electrical nerve stimulation Randomized con-trolled trial