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Natural Convection Melting in a Rectangular Heat Storage Tank of Carbon Nanotube Dispersed Latent Heat Storage Material

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Journal of Thermal Science 2024年第3期33卷 847-855页

作者： Shin-ichi MORITA Tomoya SAITO kazunori takai Yasutaka HAYAMIZU Naoto HARUKI Division of Mechanical and Electrical Engineering Kitami Institute of Technology165 Koen-choKitami-shiHokkaido090-8507Japan National Institute of Technology Yonago College4448 Hikona-cyoYonago-shiTottori683-8502Japan Okayama Prefectural University 111 KubokiSoja-shiOkayama719-1197Japan

A dispersion system fluid can convect even if the dispersoid is a solid ***,heat exchange performance can be improved while maintaining fluidity using a material with high thermal conductivity as the *** study presents the melting performance evaluation results of a latent heat storage material with a carbon nanotube(CNT)dispersion system with high thermal conductivity,which enhances the thermal conductivity of the latent heat storage material and does not limit free *** the thermal conductivity and enhancing the melting convection of the heat storage material result in increased latent heat storage *** this study,the thermal conductivity of the latent heat storage material was successfully increased by dispersing CNTs in the *** 0.1%(in mass)of multi-wall CNT(MWCNT)was dispersed in a paraffin-based latent heat storage material,the shear stress increased by 1.5 times at a shear rate of 500 s^(-1),while taking into account the potential effects of convective ***,a latent heat storage experiment was conducted in a rectangular heat storage tank using the CNT dispersion composition ratio as a parameter.A rectangular vessel with a heated vertical surface was used for the latent heat storage *** melting speed was determined by comparing the amount of latent heat stored in a CNT-dispersed latent heat storage material and a single-phase latent heat storage material *** experimental results show that the time required for the latent heat storage material to completely melt in the heat storage tank was the shortest for the single-phase latent heat storage material ***,the fastest melting progress was observed for the sample with 0.02%(in mass)MWCNT content in the melting rate range of up to approximately 40%in the *** results indicate that this phenomenon is caused by the difference in the melting rates in the upper part of the *** generated data are useful for det

关键词： latent heat storage phase change carbon nano tube free convection heat transfer

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Circulating tumor DNA as a liquid biopsy target for detection of pancreatic cancer

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World Journal of Gastroenterology 2016年第38期22卷 8480-8488页

作者： Erina takai Shinichi Yachida Division of Cancer Genomics National Cancer Center Research InstituteTokyo

Most pancreatic cancer patients present with advanced metastatic disease, resulting in extremely poor 5-year survival, mainly because of the lack of a reliable modality for early detection and limited therapeutic options for advanced disease. Therefore, there is a need for minimally-invasive diagnostic tools for detecting pancreatic cancer at an early stage, when curative surgery and also novel therapeutic approaches including precision medicine may be feasible. The "liquid biopsy" addresses these unmet clinical needs based on the concept that simple peripheral blood sampling and detection of circulating tumor DNA(ct DNA) could provide diagnostic information. In this review, we provide an overview of the current status of bloodbased tests for diagnosis of pancreatic cancer and the potential utility of ct DNA for precision medicine. We also discuss challenges that remain to be addressed in developing practical ct DNA-based liquid biopsy approaches for early diagnosis of pancreatic cancer.

关键词： Circulating tumor DNA Pancreatic cancer Biomarker Precision medicine Liquid biopsy

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Distributed optimal energy consumption control of HEVs under MFG-based speed consensus

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Control Theory and Technology 2020年第2期18卷 193-203页

作者： Qiaobin FU Fuguo XU Tielong SHEN Kenichi takai Department of Engineering and Applied Sciences Sophia UniversityChiyuda-ku Tokyo 102-8554Japan

This paper investigates a distributed optimal energy consumption control strategy under mean-field game based speed *** scale vehicles in a traffic flow is targeted instead of individual vehicles,and it is assumed that the propulsion power of vehicles is hybrid electric *** control scheme is designed in the following two *** the first stage,in order to achieve speed consensus,the acceleration control law is designed by applying the MFG(mean-field game)*** the second stage,optimal powertrain control for minimizing energy consumption is obtained through coordinate the engine and the motor under the acceleration *** simulation is conducted to demonstrate the effectiveness of the proposed control strategy.

关键词： Mean-field games(MFGs) speed consensus powertrain control hybrid electric vehicles(HEVs)

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Risk factors and diagnostic biomarkers for nonalcoholic fatty liver disease-associated hepatocellular carcinoma:Current evidence and future perspectives

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World Journal of Gastroenterology 2022年第27期28卷 3410-3421页

作者： Masayuki Ueno Haruhiko Takeda Atsushi takai Hiroshi Seno Department of Gastroenterology and Hepatology Kyoto University Graduate School of MedicineKyoto 6068507Japan

High rates of excessive calorie intake diets and sedentary lifestyles have led to a global increase in nonalcoholic fatty liver disease(NAFLD).As a result,this condition has recently become one of the leading causes of hepatocellular carcinoma(HCC).Furthermore,the incidence of NAFLD-associated HCC(NAFLD-HCC)is expected to increase in the near *** liver fibrosis is the most common risk factor for ***,up to 50%of NAFLDHCC cases develop without underlying liver *** studies have revealed many other risk factors for this condition;including diabetes,other metabolic traits,obesity,old age,male sex,Hispanic ethnicity,mild alcohol intake,and elevated liver *** gene variants,such as single-nucleotide polymorphisms of patatin-like phospholipase domain 3,transmembrane 6 superfamily member 2,and membrane-bound O-acyl-transferase domaincontaining 7,are also associated with an increased risk of HCC in patients with *** clinical and genetic information should be interpreted together for accurate risk ***-fetoprotein(AFP)is the only biomarker currently recommended for HCC ***,it is not sufficiently sensitive in addressing this diagnostic *** GALAD score can be calculated based on sex,age,lectin-bound AFP,AFP,and des-carboxyprothrombin and is reported to show better diagnostic performance for *** addition,emerging studies on genetic and epigenetic biomarkers have also yielded promising diagnostic ***,further research is needed to establish an effective surveillance program for the early diagnosis of NAFLD-HCC.

关键词： Nonalcoholic fatty liver disease Hepatocellular carcinoma Risk factors Biomarkers Tumor markers Genetics

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Effect of Substrate Temperature on Carbon Nitride Thin Films Prepared by Radio Frequency Sputtering

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Chinese Physics Letters 1999年第11期16卷 847-849页

作者： YANG Bing-chu N.Tajima T.Sogoh O.takai CHEN Zhen-hua Department of Applied Physics Central-South University of TechnologyChangsha 410083 2Institute of Non-equilibrium Materials Science and Engineering Central-South University of TechnologyChangsha 410083 3Department of Materials Processing Engineering Nagoya UniversityNagoya 464-8603Japan

Carbon nitride thin films have been deposited by radio frequency sputtering at different substrate temperatures. The electronic structure and optical properties of the films have been systematically studied for the different substrate temperatures. The maximum N concentration in the films arrived at 41 at.%. The binding energy of core levels C 1s and N 1s produces a large shift in the range of 3.5-0.3eV depending on substrate temperature Ts. The band gap is at about 0.61-1.22eV. N atom concentration and shift of core level as well as electron band gap decrease with increasing Ts, which illustrates that raising Ts is not a good way to form carbon nitride films. Ultraviolet-visible near infrared spectra show that the films have a good transparency in near infrared region, but there is a sharp absorption peak around 2720 nm. The peak disappears when Ts is higher than 400℃.

关键词： Carbon transparency films

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Development of an ADC radiation tolerance characterization system for the upgrade of the ATLAS LAr calorimeter

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Chinese Physics C 2017年第2期41卷 151-158页

作者：刘洪斌陈虎成陈凯 James Kierstead Francesco Lanni Helio takai 金革 State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China Brookhaven National Laboratory Upton NY 11973 U.S.A.

ATLAS LAr calorimeter will undergo its Phase-I upgrade during the long shutdown（LS2） in 2018, and a new LAr Trigger Digitizer Board（LTDB） will be designed and installed. Several commercial-off-the-shelf（COTS）multi-channel high-speed ADCs have been selected as possible backups of the radiation tolerant ADC ASICs for the LTDB. To evaluate the radiation tolerance of these backup commercial ADCs, we developed an ADC radiation tolerance characterization system, which includes the ADC boards, data acquisition（DAQ） board, signal generator,external power supplies and a host computer. The ADC board is custom designed for different ADCs, with ADC drivers and clock distribution circuits integrated on board. The Xilinx ZC706 FPGA development board is used as a DAQ board. The data from the ADC are routed to the FPGA through the FMC（FPGA Mezzanine Card）connector, de-serialized and monitored by the FPGA, and then transmitted to the host computer through the Gigabit Ethernet. A software program has been developed with Python, and all the commands are sent to the DAQ board through Gigabit Ethernet by this program. Two ADC boards have been designed for the ADC, ADS52J90 from Texas Instruments and AD9249 from Analog Devices respectively. TID tests for both ADCs have been performed at BNL, and an SEE test for the ADS52J90 has been performed at Massachusetts General Hospital（MGH）. Test results have been analyzed and presented. The test results demonstrate that this test system is very versatile, and works well for the radiation tolerance characterization of commercial multi-channel high-speed ADCs for the upgrade of the ATLAS LAr calorimeter. It is applicable to other collider physics experiments where radiation tolerance is required as well.

关键词： radiation tolerance characterization high-speed multi-channel ADC total ionization dose single event effect

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Identifying key traits in high-yielding rice cultivars for adaptability to both temperate and tropical environments

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The Crop Journal 2019年第5期7卷 685-693页

作者： Toshiyuki takai Patrick Lumanglas Eliza Vie Simon Yumiko Arai-Sanoh Hidetoshi Asai Nobuya Kobayashi Japan International Research Center for Agricultural Sciences TsukubaIbaraki 305-8686Japan International Rice Research Institute DAPO Box 7777Metro ManilaPhilippines Institute of Crop Science National Agriculture and Food Research Organization(NARO)TsukubaIbaraki 305-8518Japan

Increasing rice yield potential is a continuous challenge posed by world population *** increase yield potential,favorable alleles of valuable genes need to be accumulated in promising *** conducted comparative yield trials for two years in Tsukuba,Japan,in a temperate region and at the International Rice Research Institute(IRRI),Philippines,in a tropical region using five high-yielding rice cultivars:Takanari and Hokuriku193,developed in Japan,and IR64,NSIC Rc158,and YTH183,developed in the *** plus genotype×environment interaction(GGE)biplot analysis across four environments(two regions×two seasons)classified the five cultivars into four categories:Takanari and YTH183 showed high adaptability to both tropical and temperate regions,Hokuriku193 was suitable for temperate regions,NSIC Rc158 was suitable for the tropics,and IR64 was inferior to the other cultivars in both *** high yield and adaptability in Takanari and YTH183 were attributed to their large sink capacity with good grain *** plant type for high yield was different,however,between the two cultivars;Takanari was a panicle-weight type,whereas YTH183 was a panicle-number *** of F2 progeny of a cross between Takanari and YTH183 showed transgressive segregation for number of panicles per plant as well as number of spikelets per panicle,leading some F2 plants to produce more spikelets per plant(corresponding to larger sink size)than the parental cultivars in both *** results suggest the possibility of developing rice cultivars with high yield potential in both temperate and tropical regions by crossing temperate with tropical high-yielding cultivars.

关键词： Adaptability Genotype×environment interaction Rice Sink capacity Yield potential

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用NMR研究洋葱碳吸附水后的抗磁性（英文）

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新型炭材料 2014年第5期29卷 392-397页

作者： A M Panich V Yu Osipov2 K takai Department of Physics Ben-Gurion University of the Negev P. 0. Box 653 Be&#39 er Sheva 84105 Israel Ioffe Physical-Technical Institute Polytechnicheskaya 26 St. Petersburg 194021 Russia Department of Chemical Science and Technology Hosei University 3-7-2 Kajino Koganei Tokyo 184-8584 Japan

对洋葱状碳缺陷位吸附水分子的1H化学位移进行测试,并比较块状水和石墨烯、氧化石墨烯和纳米金刚石吸附水的化学位移。纳米金刚石和氧化石墨烯绝缘体的1H共振位置与块状水接近,然而石墨烯和洋葱碳吸附水呈现明显的化学位偏移,这是由导... 详细信息

对洋葱状碳缺陷位吸附水分子的1H化学位移进行测试,并比较块状水和石墨烯、氧化石墨烯和纳米金刚石吸附水的化学位移。纳米金刚石和氧化石墨烯绝缘体的1H共振位置与块状水接近,然而石墨烯和洋葱碳吸附水呈现明显的化学位偏移,这是由导电的石墨烯片层抗磁屏蔽效应所致。质子的化学位移和抗磁性之间存在显著的相关性。

关键词：洋葱碳石墨烯反磁性核磁共振

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An old uterine rupture repaired 2 months postpartum using laparoscopy aided by hysteroscopy: A case report

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Laparoscopic, Endoscopic and Robotic Surgery 2022年第4期5卷 153-157页

作者： Yuichiro Kizaki Kouki Samejima Shigetaka Matsunaga Tomonori Nagai Yasushi takai Department of Obstetrics and Gynecology Saitama Medical CenterSaitama Medical UniversitySaitama Ken 350-8550Japan

With an incidence of 0.005%,unscarred uterine rupture is extremely *** is difficult to diagnose uterine rupture because of the absence of characteristic clinical ***,we report a rare case of a 31-year-old woman with a uterine rupture that was accurately diagnosed and repaired by laparoscopy and hysteroscopy on postpartum day *** patient recovered uneventfully and was discharged on postoperative day *** months after surgery,pelvic magnetic resonance imaging was performed,which confirmed wound *** women with a stable condition,laparoscopy with hysteroscopy could be an alternative choice for the diagnosis and treatment of suspected uterine rupture;however,more substantial studies are needed to confirm this surgical approach.

关键词： Hysteroscopy Laparoscopic surgery Uterine rupture Postpartum hemorrhage Uterine preservation

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Altemeier perineal rectosigmoidectomy with indocyanine green fluorescence imaging for a female adolescent with complete rectal prolapse:A case report

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World Journal of Clinical Cases 2021年第4期9卷 847-853页

作者： Tetsu Yamamoto Ryoji Hyakudomi Kiyoe takai Takahito Taniura Yuki Uchida Kazunari Ishitobi NoriyukiHirahara Yoshitsugu Tajima Department of Digestive and General Surgery Shimane University Faculty of MedicineIzumo 693-8501ShimaneJapan

BACKGROUND Rectal prolapse in young women is *** laparoscopic ventral mesh rectopexy is the standard procedure because of its lower recurrence rate,postoperative infertility is a *** rectosigmoidectomy(Altemeier procedure)is useful for these ***,the risk of anastomotic leakage should be ***,the usefulness of fluorescence imaging with indocyanine green(ICG)to prevent anastomotic leakage was *** report a case of an adolescent woman with complete rectal prolapse who underwent ICG fluorescence imaging-assisted Altemeier *** SUMMARY A 17-year-old woman who had a mental disorder was admitted to our hospital for treatment for water *** patient also suffered from rectal prolapse,approximately 3 mo before *** was referred to our surgical department because recurrent rectal prolapse could worsen her psychiatric *** 10 cm of complete rectal prolapse was ***,the mean maximum anal resting and constriction pressures were within normal limits on anorectal *** she had the desire to bear children in the future,she underwent Altemeier perineal rectosigmoidectomy to prevent surgery-related *** performed ICG fluorescence imaging at the same time as surgery to reduce the risk of anastomotic *** postoperative course was uneventful,and the rectal prolapse was completely *** continued to do well 18 mo after surgery,without recurrence of the rectal *** ICG fluorescence imaging-assisted Altemeier perineal rectosigmoidectomy is useful in preventing postoperative anastomotic leakage in young as well as elderly patients.

关键词： Indocyanine green fluorescence imaging Rectal prolapse Altemeier operation Young women Mental disorder Perineal rectosigmoidectomy Case report

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