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Swimmer with submerged SiO_(2)/Al/LiNbO_(3) surface acoustic wave propulsion system

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Biomimetic Intelligence & Robotics 2024年第2期4卷 71-77页

作者： Deqing Kong Ryo Tanimura Fang Wang Kailiang Zhang minoru Kuribayashi Kurosawa Manabu Aoyagi Department of Engineering Muroran Institute of TechnologyMuroran 050-8585Japan Tianjin Key Laboratory of Film Electronic and Communication Devices School of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 300384China School of Engineering Tokyo Institute of TechnologyYokohama 226-8501Japan

Acoustic propulsion system presents a novel underwater propulsion approach in small scale *** study introduces a submerged surface acoustic wave(SAW)propulsion system based on the SiO_(2)/Al/LiNbO_(3) *** 19.25 MHz,the SAW propulsion system is proposed and investigated by the propulsion force calculation,PIV measurements and propulsion measurements.3.3 mN propulsion force is measured at 27.6 V_(pp).To evaluate the miniature swimmer,the SAW propulsion systems with multiple frequencies are *** 2.2 W,the submerged SAW propulsion system at 38.45 MHz demonstrates 0.83 mN/mm^(2) propulsion *** 96.13 MHz and 24 V_(pp),the movements of miniature swimmer with a fully submerged SAW propulsion system are recorded and analyzed to a maximum of 177 mm/*** of miniaturization,high power density,and simple structure,the SAW propulsion system can be expected for some microrobot applications,such as underwater drone,pipelinerobotand intravascularrobot.

关键词： Acoustofluidics Surface acoustic wave Swimmer Underwater propulsion system

Special Column for the 9th Asian Joint Workshop on Thermophysics and Fluid Science 2022(AJWTF 2022)

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Journal of Thermal Science 2024年第3期33卷 793-793页

作者： SURYAN Abhilash YAGA minoru SUN Dakun College of Engineering Trivandrum TrivandrumIndia University of the Ryukyus OkinawaNishiharaJapan Beihang University BeijingChina

This Special Column of Journal of Thermal Science(JTS)contains a selection of peer-reviewed papers from AJWTF 2022,held in Utsunomiya,Japan during 27 to 30November,*** Asian Joint Workshop and Thermophysics is a biennial international conference facilitating cooperation between scientists of Asian *** conference was founded by three renowned academicians *** Dong Kim,from South Korea,*** YU from China and *** Setoguchi from *** inaugural edition of the conference was held at Qufu,China in *** was followed by Luoyang,China(2008),Matsue,Japan(2010),Busan,Korea(2012),Nagasaki,Japan(2014),Guilin,China(2016),Trivandrum,India(2018),Daegu,Korea(2020).The ninth edition of the conference,held at Utsunomiya,Japan in November,2022 was chaired by *** Yamamoto of the Department of Mechanical Engineering,Tokyo University of Science,*** conference involved keynote lectures and talks from distinguished academicians and professionals from the *** made and future directions on research involving fluid and thermal sciences and engineering were part of the *** conference also provided an opportunity for cultural exchanges and promotion of soft power of participating nations.

关键词： promotion Korea edition

Superconducting joints using reacted multifilament MgB_(2)wires:A technology toward cryogen-free MRI magnets

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Journal of Magnesium and Alloys 2024年第1期12卷 159-170页

作者： Dipak Patel Akiyoshi Matsumoto Hiroaki Kumakura Yuka Hara Toru Hara minoru Maeda Hao Liang Yusuke Yamauchi Seyong Choi Jung Ho Kim Md Shahriar A.Hossain School of Mechanical and Mining Engineering The University of QueenslandSt LuciaQueensland 4072Australia National Institute for Materials Science(NIMS) 1-2-1 SengenTsukubaIbaraki 305-0047Japan Department of Electrical Engineering and Kangwon High Magnetic Field Center Institute of Quantum Convergence TechnologyKangwon National UniversityGangwon 24341Republic of Korea Australian Institute for Bioengineering and Nanotechnology(AIBN) The University of QueenslandSt LuciaQueensland 4072Australia Department of Materials Process Engineering Graduate School of EngineeringNagoya UniversityNagoyaAichi 464-8603Japan Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongNorth WollongongNew South Wales 2500Australia

The development of superconducting joining technology for reacted magnesium diboride(MgB_(2))conductors remains a critical challenge for the advancement of cryogen-free MgB_(2)-based magnets for magnetic resonance imaging(MRI).Herein,the fabrication of superconducting joints using reacted carbon-doped multifilament MgB_(2)wires for MRI magnets is *** achieve successful superconducting joints,the powder-in-mold method was employed,which involved tuning the filament protection mechanism,the powder compaction pressure,and the heat treatment *** fabricated joints demonstrated clear superconducting-to-normal transitions in self-field,with effective magnetic field screening up to 0.5 T at 20 *** evaluate the interface between one of the MgB_(2)filaments and the MgB_(2)bulk within the joint,serial sectioning was conducted for the first time in this type of superconducting *** serial sectioning revealed space formation at the interface,potentially caused by the volume shrinkage associated with the MgB_(2)formation or the combined effect of the volume shrinkage and the different thermal expansion coefficients of the MgB_(2)bulk,the filament,the mold,and the sealing *** findings are expected to be pivotal in developing MgB_(2)superconducting joining technology for MRI magnet applications through interface engineering.

关键词： Mg B2 superconducting joint MgB_(2)conductor MRI applications Cryogen-free magnet Persistent-mode operation

Initial decrease in the lipoprotein(a)level is a novel prognostic biomarker in patients with acute coronary syndrome

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World Journal of Cardiology 2024年第6期16卷 329-338页

作者： Yasuhiko Saeki Jun Sawaguchi Satori Akita Taka-aki Takamura Kosuke Fujibayashi minoru Wakasa Hironobu Akao Michihiko Kitayama Yasuyuki Kawai Kouji Kajinami Department of Cardiology Kanazawa Medical UniversityUchinada 9200293Japan Trans-catheter Cardiovascular Therapeutics Kanazawa Medical UniversityUchinada 9200293Japan

BACKGROUND Lipoprotein(a)[Lp(a)]is a causal risk factor for atherosclerotic cardiovascular diseases;however,its role in acute coronary syndrome(ACS)remains *** To investigate the hypothesis that the Lp(a)levels are altered by various conditions during the acute phase of ACS,resulting in subsequent cardiovascular *** From September 2009 to May 2016,377 patients with ACS who underwent emergent coronary angiography,and 249 who completed≥1000 d of follow-up were ***(a)levels were measured using an isoform-independent assay at each time point from before percutaneous coronary intervention(PCI)to 48 h after *** primary endpoint was the occurrence of major adverse cardiac events(MACE;cardiac death,other vascular death,ACS,and non-cardiac vascular events).RESULTS The mean circulating Lp(a)level decreased significantly from pre-PCI(0 h)to 12 h after(19.0 mg/dL to 17.8 mg/dL,P<0.001),and then increased significantly up to 48 h after(19.3 mg/dL,P<0.001).The changes from 0 to 12 h[Lp(a)Δ0-12]significantly correlated with the basal levels of creatinine[Spearman’s rank correlation coefficient(SRCC):-0.181,P<0.01]and Lp(a)(SRCC:-0.306,P<0.05).Among the tertiles classified according to Lp(a)Δ0-12,MACE was significantly more frequent in the lowest Lp(a)Δ0-12 group than in the remaining two tertile groups(66.2%vs 53.6%,P=0.034).A multivariate analysis revealed that Lp(a)Δ0-12[hazard ratio(HR):0.96,95%confidence interval(95%CI):0.92-0.99]and basal creatinine(HR:1.13,95%CI:1.05-1.22)were independent determinants of subsequent *** Circulating Lp(a)levels in patients with ACS decreased significantly after emergent PCI,and a greater decrease was independently associated with a worse prognosis.

关键词： Lipoprotein(a) Acute coronary syndrome Percutaneous coronary intervention Major adverse cardiac events Prognosis

Transformed gastric mucosa-associated lymphoid tissue lymphoma originating in the colon and developing metachronously after Helicobacter pylori eradication:A case report

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World Journal of Gastrointestinal Oncology 2024年第10期16卷 4281-4288页

作者： Makoto Saito Zen-Ichi Tanei Masumi Tsuda Toma Suzuki Emi Yokoyama minoru Kanaya Koh Izumiyama Akio Mori Masanobu Morioka Takeshi Kondo Blood Disorders Center Aiiku HospitalSapporo 064-0804HokkaidoJapan Department of Cancer Pathology Faculty of MedicineHokkaido UniversitySapporo 060-8638HokkaidoJapan

BACKGROUND Helicobacter pylori(***)eradication treatment for primary gastric mucosaassociated lymphoid tissue(MALT)lymphoma has already been ***,t(11;18)(q21;q21)/API2-MALT1 translocation-positive lesions are a type of primary gastric MALT lymphoma in which a response to eradication treatment is difficult to *** addition,trisomy 18 may be associated with diffuse large B-cell lymphoma(DLBCL)transformation of gastric MALT *** SUMMARY A 66-year-old man was diagnosed with MALT lymphoma in the ascending colon by colonoscopy and *** years later,esophagogastroduodenoscopy revealed chronic atrophic gastritis that was positive for ***,and eradication treatment was *** years and nine months later(at the age of 70),a new ulcerative lesion suggestive of MALT lymphoma appeared in the gastric body,and six months later,a similar lesion was also found in the *** year later(4 years and 3 months after *** eradication),at the age of 72,the lesion in the gastric body had become deeper and had propagated.A biopsy revealed a pathological diagnosis of *** MALT lymphoma lesions in the ascending colon and DLBCL lesions in the stomach were positive for the t(11;18)(q21;q21)/API2-MALT1 translocation,and trisomy 18q21 was also *** 6 courses of R-CHOP(rituximab,cyclophosphamide,doxorubicin,vincristine and prednisone)chemotherapy,all of the above lesions disappeared[complete remission(CR)],and CR has been maintained for more than 3 *** addition,both the colonic and gastric lesions were proven to have the same *** Because the patient had a MALT1 translocation with trisomy 18q21,it was thought that this gastric MALT lymphoma developed independently of *** infection and progressed.

关键词： Gastric mucosa-associated lymphoid tissue lymphoma Transform Diffuse large B-cell lymphoma Colonic mucosa-associated lymphoid tissue lymphoma Helicobacter pylori eradication MALT1 translocation Case report

Surgical strategies for challenging common bile duct stones in the endoscopic era: A comprehensive review of current evidence

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World Journal of Gastrointestinal Endoscopy 2024年第6期16卷 305-317页

作者： Tharathorn Suwatthanarak Vitoon Chinswangwatanakul Asada Methasate Chainarong Phalanusitthepha minoru Tanabe Keiichi Akita Thawatchai Akaraviputh Minimally Invasive Surgery Unit Department of SurgeryFaculty of Medicine Siriraj HospitalMahidol UniversityBangkok Noi 10700BangkokThailand Graduate School of Medical and Dental Sciences Tokyo Medical and Dental UniversityBunkyo 113-8519TokyoJapan Department of Hepatobiliary and Pancreatic Surgery Tokyo Medical and Dental UniversityBunkyo 113-8519TokyoJapan Department of Clinical Anatomy Tokyo Medical and Dental UniversityBunkyo 113-8519TokyoJapan

While endoscopic retrograde cholangiopancreatography(ERCP)remains the primary treatment modality for common bile duct stones(CBDS)or choledocho-lithiasis due to advancements in instruments,surgical intervention,known as common bile duct exploration(CBDE),is still necessary in cases of difficult CBDS,failed endoscopic treatment,or altered *** evidence also supports CBDE in patients requesting single-step cholecystectomy and bile duct stone removal with comparable *** review elucidates relevant clinical anatomy,selection indications,and outcomes to enhance surgical *** selection between trans-cystic(TC)vs trans-choledochal(TD)approaches is described,along with stone removal techniques and ductal *** surgical techniques and strategies for both the TC and TD approaches,including instrument selection,is also ***,this review comprehensively addresses operation-specific complications such as bile leakage,stricture,and entrapment,and focuses on preventive measures and treatment *** review aims to optimize the management of CBDS through laparoscopic CBDE,with the goal of improving patient outcomes and minimizing risks.

关键词： Choledocholithiasis Common bile duct stone Difficult common bile duct stone Common bile duct exploration Laparoscopic common bile duct exploration

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伊藤町零碳酒店

世界建筑导报 2024年第1期39卷 114-117页

作者： minoru Yokoo Takumi Saikawa Masaki Hamada(kkpo)(摄影) 不详

我们设计了一家零能耗酒店,作为西条市的社区中心。西条市是著名的“Uchinuki”井水产地,水源来自被视为圣山的石锤山。2016年,东京大学隈研吾实验室开始与各地的合作伙伴密切合作,以水为主题制定名为“伊藤町项目”的新型环保城市总体... 详细信息

我们设计了一家零能耗酒店,作为西条市的社区中心。西条市是著名的“Uchinuki”井水产地,水源来自被视为圣山的石锤山。2016年,东京大学隈研吾实验室开始与各地的合作伙伴密切合作,以水为主题制定名为“伊藤町项目”的新型环保城市总体规划。与当地居民举办了研讨会,为年轻建筑师举办了个人建筑竞赛,并在此基础上建立了“伊藤町”网络。

关键词：城市总体规划东京大学零能耗隈研吾酒店零碳当地居民建筑师

Novel procedure for hepatic venous outflow block after liver resection:A case report

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World Journal of Clinical Cases 2024年第29期12卷 6320-6326页

作者： Hisanobu Higashi Yuta Abe Kodai Abe Yutaka Nakano Masayuki Tanaka Shutaro Hori Yasushi Hasegawa Hiroshi Yagi minoru Kitago Yuko Kitagawa Department of Surgery National Hospital Organization Saitama HospitalWako 351-0102Japan Department of Surgery Keio University School of MedicineTokyo 160-8582Japan

BACKGROUND Postoperative complications like remnant hepatic vein(HV)outflow block and liver torsion can occur after right *** falciform ligament fixation is typically used to prevent liver *** report a novel procedure to manage outflow *** SUMMARY An 80-year-old man developed HV outflow block after remnant right hepatectomy,despite liver fixation and intraoperative HV flow *** had a history of cholangiocellular carcinoma and had undergone posterior segmentectomy and *** falciform ligament fixation was inadequate to maintain liver *** surgery was performed,using an omental flap and mobilized right side colon with ileocecal region to prevent liver dislocation due to intraabdominal *** postoperative course was *** This is the first report providing a novel surgical procedure when the falciform ligament is insufficient for remnant liver fixation.

关键词： Hepatectomy Postoperative complications Budd-Chiari syndrome Hepatic vein outflow block Emergency surgery Case report

Rotational Slip Flow in Coaxial Cylinders by the Finite-Difference Lattice Boltzmann Methods

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Communications in Computational Physics 2011年第5期9卷 1293-1314页

作者： minoru Watari LBM Fluid Dynamics Laboratory 3-2-1 Mitahora-higashiGifu 502-0003Japan

Recent studies on applications of the lattice Boltzmann method(LBM)and the finite-difference lattice Boltzmann method(FDLBM)to velocity slip simulations are mostly on one-dimensional(1D)problems such as a shear flow between parallel *** to a 2D problem may raise new *** author performed numerical simulations of rotational slip flow in coaxial cylinders as an example of 2D *** types of 2D models were *** first were multi-speed FDLBM models proposed by the *** second was a standard LBM,the D2Q9 *** simulations were performed applying a finite difference scheme to both the *** study had two *** first was to investigate the accuracies of LBM and FDLBM on applications to rotational slip *** second was to obtain an experience on application of the cylindrical coordinate *** FDLBM model with 8 directions and the D2Q9 model showed an anisotropic flow pattern when the relaxation time constant or the Knudsen number was *** FDLBM model with 24 directions showed accurate results even at large Knudsen numbers.

关键词： Finite-difference lattice Boltzmann method rarefied gas flow rotational slip flow cylindrical coordinate