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Global and Kinetic MHD Simulation by the Gpic-MHD Code

Plasma Science and Technology 2011年第5期13卷 528-534页

作者： Hiroshi naitou Yusuke YAMADA Kenji KAJIWARA Wei-li LEE Shinji TOKUDA Masatoshi YAGI Graduate School of Science and Engineering Yamaguchi University Princeton Plasma Physics Laboratory International Fusion Energy Research Center Research Institute for Applied Mechanics Kyushu University Japan Atomic Energy Agency

In order to implement large-scale and high-beta tokamak simulation, a new algorithm of the electromagnetic gyrokinetic PIC （particle-in-cell） code was proposed and installed on the Gpic-MHD code [Gyrokinetic PIC code for magnetohydrodynamic （MHD） simulation]. In the new algorithm, the vorticity equation and the generalized Ohm＇s law along the magnetic field are derived from the basic equations of the gyrokinetic Vlasov, Poisson, and Ampere system and are used to describe the spatio-temporal evolution of the field quantities of the electrostatic potential φ and the longitudinal component of the vector potential Az. The basic algorithm is equivalent to solving the reduced-MHD-type equations with kinetic corrections, in which MHD physics related to Alfven modes are well described. The estimation of perturbed electron pressure from particle dynamics is dominant, while the effects of other moments are negligible. Another advantage of the algorithm is that the longitudinal induced electric field, ETz = -δAz/δt, is explicitly estimated by the generalized Ohm＇s law and used in the equations of motion. Furthermore, the particle velocities along the magnetic field are used （vz-formulation） instead of generalized momentums （pz-formulation）, hence there is no problem of ＇cancellation＇, which would otherwise appear when Az is estimated from the Ampere＇s law in the pz-formulation. The successful simulation of the collisionless internal kink mode by the new Gpic-MHD with realistic values of the large-scale and high-beta tokamaks revealed the usefulness of the new algorithm.

关键词： tokamak gyrokinetic theory magnetohydrodynamics internal kink mode

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Influence of Housing and Urban Development on Debris Flow Flooding and Deposition

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Journal of Mountain Science 2013年第2期10卷 273-280页

作者： kana NAKATANI Yuki OKUYAMA Yuji HASEGAWA Yoshifumi SATOFUKA Takahisa MIZUYAMA Graduate School of Agriculture Kyoto UniversityKitashirakawa Oiwake-choSakyo-kuKyoto City606-8502Japan National Institute for Land and Infrastructure Management AsahiTsukuba CityIbaraki305-0804Japan Civil Engineering Research Laboratory 904-1 TohigashiTsukuba CityIbaraki300-2633Japan Department of Civil Engineering Ritsumeikan University1-1-1 Noji-higashiKusatsu CityShiga525-8577Japan

Debris flows form deposits when they reach an alluvial fan until they eventually ***,houses located in the alluvial fan might affect the debris flow flooding and deposition *** previous studies have considered the effects of houses on debris flow flooding and *** study conducted model experiments and numerical simulations using the kanako2D debris flow simulator to determine the influence of houses on debris flow flooding and *** model experiments showed that when houses are present,the debris flow spreads widely in the cross direction immediately upstream of the houses,especially when the flow discharge is large or the grain size is *** located in the alluvial fan also influence the deposition *** presence of houses led to flooding and deposition damage in some places and reduced the damage in *** simulation also demonstrated the influence of *** the model experiment and the simulation showed that houses change the flooding and deposition areas.

关键词： Debris flow Alluvial fan House Modelexperiment Numerical simulation

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猪轮状病毒OSU株对乳鼠的致病性

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中国兽医杂志 2024年第6期60卷 47-53页

作者：桑卡娜杨绒娟胡惠君卞愧徐倩褚何红周德刚洛阳惠中兽药有限公司国家兽用药品工程技术研究中心河南洛阳471003 信阳市浉河区农业农村局河南信阳464000 中国兽医药品监察所北京海淀100081

为建立猪轮状病毒(PoRV)OSU株感染乳鼠致腹泻模型,研究PoRV对乳鼠的致病性,本试验选用40只4日龄昆明乳鼠,将其随机分为3个攻毒组和1个空白对照组,攻毒组乳鼠经口灌胃不同剂量的PoRV培养液,分别为攻毒组1(50μL)、攻毒组2(100μL)和攻毒... 详细信息

为建立猪轮状病毒(PoRV)OSU株感染乳鼠致腹泻模型,研究PoRV对乳鼠的致病性,本试验选用40只4日龄昆明乳鼠,将其随机分为3个攻毒组和1个空白对照组,攻毒组乳鼠经口灌胃不同剂量的PoRV培养液,分别为攻毒组1(50μL)、攻毒组2(100μL)和攻毒组3(150μL),病毒滴度为10~(5.2)TCID_(50)/100μL,空白对照组按同样的方法灌服细胞培养液。在感染后不同时间点观察乳鼠的临床症状、腹泻和死亡情况、解剖症状,采用苏木精-伊红(H.E.)染色进行肠道组织病理学检查,反转录聚合酶链式反应(RT-PCR)检测乳鼠肠内容物中PoRV含量。结果显示,乳鼠在接种PoRV后24 h出现明显腹泻症状,攻毒后3~4 d时发病最严重,4 d时乳鼠的腹泻率介于62.5%~100%,7 d时恢复正常,乳鼠的死亡率介于44.4%~90.0%。与空白对照组比,攻毒组小鼠在给予PoRV后,肠道出现明显的病理变化,主要表现为水肿和充血、肠上皮完整性破坏。RT-PCR检测结果显示,攻毒组部分乳鼠的肠内容物中检出PoRV。本试验利用PoRV OSU株成功建立了乳鼠腹泻模型,阐明了其致病特征。

关键词：猪轮状病毒乳鼠腹泻动物模型反转录聚合酶链式反应(RT-PCR)

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Comparison of minimally invasive glaucoma surgery with trabecular micro-bypass stent and microhook ab interno trabeculotomy performed in conjunction with cataract surgery

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International Journal of Ophthalmology(English edition) 2022年第7期15卷 1082-1088页

作者： Naoto Tokuda Yasushi Kitaoka Ayaka Tsukamoto Yasuhiro Toyoda Yusuke Yamada kana Sase Hitoshi Takagi Department of Ophthalmology St Marianna University School of Medicine2-16-1 Sugao Miyamae-ku Kawasaki-shiKanagawa 216-8851Japan

AIM: To evaluate the effectuality and safety of cataract surgery combined with either ab interno trabeculotomy by the microhook(μLOT) or a single i Stent? trabecular bypass implantation(i Stent) in eyes with cataract and mild-tomoderate glaucoma. METHODS: This study enrolled subjects with mild-tomoderate open angle glaucoma with visually significant cataract who used two or more ophthalmic antiglaucoma agents between 60 and 90 y of age. Patients underwent cataract surgery cooperated with either implantation of an i Stent(i Stent-phaco) or excisional goniotomy with the μLOT(μLOT-phaco). Patients underwent μLOT-phaco in the eye with lower the mean deviation, according to the Humphrey field analyzer, while i Stent-phaco was carried out on the other eye. Intraocular pressure(IOP) pre-and post-surgery, alterations in anterior chamber flare(ACF), and corneal endothelial cell density(ECD) were ***: Twenty subjects were enrolled(mean age: 73.6±7.3 y). The mean medicated preoperative IOP was 16.7 mm Hg in the μLOT and 16.2 mm Hg in the i Stent eyes. The mean final IOP at 12 mo was 13.6 mm Hg in the μLOT eyes and 13.6 mm Hg in the i Stent eyes, representing a 17.8% and 17.2% reduction, respectively. The preoperative ACF in the μLOT eyes was 9.5 pc/ms and it returned to normal in 30 d postoperatively, with a value of 11.4 pc/ms. In the i Stent eyes, ACF was 9.6 pc/ms preoperatively and it returned to normal by 7 d postoperatively(11.2 pc/ms atday 7), demonstrating that postoperative inflammation was less in the i Stent eyes. The corneal ECD in both groups was not significantly ***: In this study, i Stent and μLOT are both effective through 12 mo of follow-up. Safety is more favorable in the i Stent eyes, based on early anterior chamber inflammation.

关键词： minimally invasive glaucoma surgery iStent ab interno trabeculotomy

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Advances on ultra-sensitive electrospun nanostructured electrochemical and colori metric sensors for diabetes mellitus detection

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Nano Materials Science 2021年第4期3卷 321-343页

作者： Mohamed Hasaan Hussain Lim Ping Fook Maria kana Sanira Putri Huey Ling Tan Noor Fitrah Abu Bakar Norbert Radacsi School of Chemical Bngineering College of Engineering University Teknologi MARA 40450 Shah AlamSelangorMalaysia School of Engineering Institute for Materials and ProcessesThe University of EdinburghRobert Stevenson RoadEdinburghEH93FBUnited Kingdom

Recent developments in the biochemical and medicinal industries have been heavily focused on producing affordable glucose biosensors due to the condi nuous annual increase of diabetic patients *** devel-opment of a fast,accurate,and reliable glucose sensor will increase confidence in controlling di abetes mellitus and its assoclated health complications among the diabetic *** is a versatile method that can produce complex nanofbrous assemblies with attractiwe and functional characteristics from varlous *** nanofibers demonstrated high efficiency in the immobilization of biological molecules,which can improve the sensing performance *** ation of polymer electrospun nanofibers with metal nanoparticles,metal oxde or transition metal in producing nanobiocomposites is also a highly popul ar approach in the past few *** report presents the current progress and research trends of the technique,focusing on varous ma-terials and fabrication strategies used to produce biosensing *** helps readers decide the suitable approach in designing highly sensitive,selective,fast,and inexpensive glucose sensors.

关键词： Glucose sensor Electrospinning Nanofiber Electrochemical sensing Colorimetric sensing

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Research on the Causes and Coping Strategies of the Land Subsidence Caused by the Tunnel Construction Projects

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International Journal of Technology Management 2015年第11期 26-28页

作者： Chena kana Sichuan College of Architectural Technology DeyangSichuan 618000 China

In this paper, we conduct research on the causes and coping strategies of the land subsidence caused by the tunnel construction projects. We analyze the issues from the following of the perspectives. （1） Analysis method. To solve large scale system of the development of computer hardware and the numerical calculation method, we use the basic analysis to deal with it. （2） The empirical of methods. Ground motion is usually leads to the basic development of the inclined tunnel surface vertical displacement, the result of the movement process can turn to a settling tank. （3） Machine learning based approaches. In one of biggest difficulties when using neural network method is to obtain all possible parameters related to ground subsidence, we use the machine learning model to handle the challenge. In the final part, we show prospect for the future research, we will combine more numerical analysis tools to optimize the current methodology.

关键词： Land Subsidence Tunnel Construction Causes and Coping Strategies Modelling.

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Effects of progressive muscular relaxation and stretching exercises combination on blood pressure among farmers in rural areas of Indonesia:a randomized study

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Frontiers of Nursing 2021年第4期8卷 365-374页

作者： Tantut Susanto Retno Purwandari Emi Wuri Wuryaningsih Hirohito Watanabe kana Kazawa Michiko Moriyama Family and Geriatric Nursing DepartmentFaculty of NursingUniversitas JemberJawa Timur 68121Indonesia Basic Sciences Nursing and Management Nursing Department Faculty of NursingUniversitas JemberJawa Timur 68121Indonesia Psychiatric Nursing Department Faculty of NursingUniversitas JemberJawa Timur 68121Indonesia Graduate School of Biomedical and Health Sciences Hiroshima UniversityHiroshima 734-8553Japan

Objective:Maintaining blood pressure(BP)could improve the quality of life among farmers in agricultural *** study aims to evaluate the effects of progressive muscular relaxation and stretching exercises(SEs)for BP in farmer subjects in rural ***:A randomized controlled design was applied for this *** performed a method,which is the combination of progressive muscle relaxation(PMR)and SEs for participants(30 in the control group and 60 in the intervention group).The intervention group self-practiced PMR and SEs through a video that providing instructions for 15 *** practiced before going to sleeping in the night,and SEs practiced before going to farms in the morning per day for *** signed-rank test was performed to measure the difference between systolic blood pressure(SBP)and diastolic blood pressure(DBP)as one pre-and post-test comparison of baseline and 3 months data in control and intervention ***:There were no significant differences between SBP and DBP pre-and post-test in control group(P>0.050).Meanwhile,there were significant differences in reducing SBP(M=126.67;SD=18.07;95%CI=120-147.5 mmHg)and DBP(M=80.67;SD=6.91;95%CI=80-90 mmHg)pre-and post-test combination of PMR and SEs in intervention group(P<0.001).After 3-months of follow-up data,number type SBP and DBP still remained at the same levels of baseline and 3-month data in control ***,there was an increased number of normal and prehypertension for SBP and DBP(10%vs.10%and 20%vs.31.6%)and reduced of hypertension stage I for SBP and DBP(30%vs.41.6%).Conclusions:This pilot study demonstrated effectively to reduce SBP and DBP among farmers using the combination of PMR and SEs in the agricultural health setting.

关键词： progressive muscular relaxation stretching exercises blood pressure farmer agricultural

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An evidenced-based diagnostic tool for superior semicircular canal dehiscence syndrome

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中华耳科学杂志:英文版 2023年第4期18卷 230-234页

作者： Christian G.Fritz Garrett G.Casale Lulia A.kana Robert S.Hong Michigan Ear Institute Farmington HillsMichiganUSA Department of OtorhinolaryngologyeHead&Neck Surgery University of PennsylvaniaPhiladelphiaPAUSA Department of OtolaryngologyeHead and Neck Surgery Wayne State UniversityDetroitMIUSA

Purpose:To construct a symptoms-based prediction tool to assess the likelihood of superior canal dehiscence(SSCD)on high-resolution *** and methods:Mathematical modeling was employed to predict radiologic evidence of SSCD at a tertiary neurotology referral ***:A total of 168 patients were included,of which 118 had imaging-confirmed *** univariate analysis significant predictors of SSCD presence were:sound/pressure-induced vertigo(p?0.006),disequilibrium(p?0.008),hyperacusis(p?0.008),and autophony(p?0.034).Multivariate analysis enabled a 14-point symptom-weighted tool to be developed,wherein a score of6 raised the suspicion of SSCD(70%likelihood of being present),R2?***:The likelihood of SSCD on CT scan can be determined with a high degree of certainty based on symptoms recorded at *** the evidenced-based diagnostic tool validated herein,a score6 with any symptom combination justifies ordering a CT scan.

关键词： Clinical predictors Diagnostic tool SSCD Superior semicircular canal dehiscence Third window

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Verification of Drainage Sterilization System Uses Low-Voltage Pulsed Electric Field in a Prawn Farm

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Journal of Agricultural Science and Technology(A) 2014年第3期4卷 189-196页

作者： Hirotaka naitou Yukinori Tani Shingo Nishi Department of Environmental Health Sciences Graduate School of Nutritional and Environmental Sciences University ofShizuoka Suruga-ku Shizuoka 422-8526 Japan Institute for Environmental Sciences University of Shizuoka Suruga-ku Shizuoka 422-8526 Japan Tetsugen Co. Ltd. Chiyoda-ku Tokyo 102-8142 Japan

It is necessary to take measures against infectious diseases in the Southeast Asian prawn farming industry. In giant tiger prawn （Penaeus monodon） aquaculture, diseases caused by viruses such as white spot syndrome virus （WSSV） and bacteria such as Vibrio have become a menace. Appropriate treatments of prawn culture pond＇s waters are advocated for preventing and controlling pathogens. The purpose of this study was to conduct an antimicrobial water treatment using a low-voltage pulsed electric field sterilization. Here we prepared a mechanical low-voltage pulsed electric field system with copper wire coiling around a titanium ring. The viability of WSSV in seawater was examined by prawn infectivity experiments. We inoculated healthy prawns （approximately 10-15 g） with the WSSV master sample that passed 0-3 times through the system. WSSV infection in prawns decreased according to the number of passes through the system. Healthy prawns survived for〉 10 days without feeding, where as prawns inoculated with the WSSV master sample showed symptoms of white spot and died in about 4 days. Two-thirds of the prawns inoculated with the WSSV master sample that was passed once through the system developed WSSV symptoms and were polymerase chain reaction （PCR） positive. However, no symptoms were observed and prawns were PCR negative when the WSSV master sample was passed three times through the system. Based on these results, we purpose that a low-voltage pulsed electric field system will serve as an efficient pond drainage sterilization system and will replace conventional treatments using chemicals such as sodium hypochlorite.

关键词： Low-voltage pulsed electric field sterilization prawn farm Penaeus monodon white spot syndrome virus SoutheastAsia.

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11个鲜食葡萄品种幼苗抗旱性研究及抗旱指标筛选

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果树学报 2023年第9期40卷 1871-1884页

作者：刁珊 NAMI kana 纪薇杨明霞山西农业大学园艺学院山西太谷030801 日本山形大学山形县990-8560 运城市农业农村局山西运城044000 山西农业大学果树研究所山西太谷030815

【目的】缺水是影响干旱区葡萄种植的主要因素之一,因此有必要筛选抗旱鲜食葡萄品种和葡萄抗旱的相关指标。【方法】以丽红宝、晶红宝、无核翠宝等11个鲜食葡萄品种幼苗为材料,进行自然干旱处理,测定其电导率、叶绿素含量和叶绿素荧光参... 详细信息

【目的】缺水是影响干旱区葡萄种植的主要因素之一,因此有必要筛选抗旱鲜食葡萄品种和葡萄抗旱的相关指标。【方法】以丽红宝、晶红宝、无核翠宝等11个鲜食葡萄品种幼苗为材料,进行自然干旱处理,测定其电导率、叶绿素含量和叶绿素荧光参数,利用相关性分析、主成分分析、聚类分析和灰色关联度分析相结合的方法,综合评价幼苗抗旱性差异并筛选相关指标。【结果】干旱胁迫对植株相对电导率、叶绿素含量和叶绿素荧光参数均有显著影响。相关性分析表明,Rfd与NPQ,F_(m)与Fp、F_(v)、F_(v)/F_(m),Fp与F_(v)、F_(v)/F_(m),F_(v)与F_(v)/F_(m),叶绿素a含量与总叶绿素含量呈极显著正相关(p秋红宝>茉莉香>巨茉莉>无核白>晶红宝>火焰无核>晚黑宝>无核翠宝>克瑞森无核>早霞玫瑰。聚类分析将11个葡萄品种分为3个抗旱级别,第1类是高抗旱品种(秋红宝和丽红宝);第2类是中抗旱品种(晶红宝、无核白、巨茉莉和茉莉香);第3类是低抗旱品种(克瑞森无核、晚黑宝、早霞玫瑰、无核翠宝和火焰无核)。灰色关联度分析显示叶绿素a含量、叶绿素b含量、类胡萝卜素含量、总光合色素含量、根系相对电导率和NPQ 6个指标与葡萄幼苗抗旱性密切相关。【结论】秋红宝和丽红宝抗旱性较强,适合在干旱及半干旱地区推广种植。叶片的光合色素含量、根系相对电导率和NPQ可作为评价葡萄抗旱性的可靠指标。

关键词：鲜食葡萄幼苗抗旱性差异指标筛选综合评价

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