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spin states of 2D Nanocomposites of Ni and V Nanoclusters on Hexagonal h-BN, BC_3 and Graphene

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Journal of Materials science & Technology 2015年第10期31卷 979-985页

作者： P.Avramov A.A.Kuzubov s.sakai s.Entani H.Naramoto N.Eliseeva Kyungpook National University siberian Federal University L.V.Kirensky Institute of Physics sB RAs Advanced science Research Center Japan Atomic Energy Agency

Atomic and electronic structures of adsorbed nickel and vanadium atoms and nanoclusters （Nin and Vn, n = 1-10） on hexagonal h-BN and BC3 lattices were studied using DFT PBE/PBC/PW （Perdew-Burke- Ernzerhof potential of density functional theory/periodic boundary conditions/plane wave basis set） technique. For the sake of comparison the structure and properties of the same nanoclusters deposited on pristine graphene were calculated as well. It was found that for all types of supports an increase of n from 1 to 10 leaded to decrease of coordination types from 776 to r/2 and 771. The h-BN- and BC3-based nanocomposites were characterized by high （up to 18 μ for Ni10/BC3） magnetic moments of the nanoclusters and featured by positive binding energies. The graphene-based nanocomposites revealed energetic stability and, in general, lower magnetic moments per unit cell. The direct potential energy barriers for migration of Ni η2/η21 and η6/η6 types of dimers on graphene were low （10.9-28.9 kJ/mol） with high reverse barriers for η6/η6 dimers, which favored dynamically equilibrated Ni clusterization on graphene.

关键词： Electronic structureMetal nanostructure Nanocomposites Grapheneh-BNBC3 spin states

Temperature and Nitric Oxide Generation in a Pulsed Arc Discharge Plasma

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Plasma science and Technology 2007年第6期9卷 747-751页

作者： T.NAMIHIRA s.sakai M.MATsUDA D.WANG T.KIYAN H.AKIYAMA K.OKAMOTO K.TODA Graduate school of science and Technology Kumamoto University2-39-1 KurokamiKumamoto cityKumamoto 860-8555Japan Department of Intensive and Critical Care Medicine Shinshu University School of Medicine3-1-1 AsahiMatsumoto cityNagano 390-8621Japan Department of Environmental science Kumamoto University2-39-1 KurokamiKumamoto cityKumamoto 860-8555Japan

Nitric oxide （NO） is increasingly being used in medical treatments of high blood pressure, acute respiratory distress syndrome and other illnesses related to the lungs. Currently a NO inhalation system consists of a gas cylinder of N2 mixed with a high concentration of NO. This arrangement is potentially risky due to the possibility of an accidental leak of NO from the cylinder. The presence of NO in the air leads to the formation of nitric dioxide （NO2）, which is toxic to the lungs. Therefore, an on-site generator of NO would be highly desirable for medical doctors to use with patients with lung disease. To develop the NO inhalation system without a gas cylinder, which would include a high concentration of NO, NAMIHIRA et al have recently reported on the production of NO from room air using a pulsed arc discharge. In the present work, the temperature of the pulsed arc discharge plasma used to generate NO was measured to optimize the discharge condition. The results of the temperature measurements showed the temperature of the pulsed arc discharge plasma reached about 10,000 K immediately after discharge initiation and gradually decreased over tens of microseconds. In addition, it was found that NO was formed in a discharge plasma having temperatures higher than 9,000 K and a smaller input energy into the discharge plasma generates NO more efficiently than a larger one.

关键词： pulsed arc discharge plasma temperature nitric oxide medical application

Triangle singularity enhancing isospin violation in B^0_s→ J/ψπ~0f_0(980)

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Chinese Physics C 2018年第4期42卷 157-165页

作者： Wei-Hong Liang s. sakai Ju-Jun Xie E. Oset Department of Physics Guangxi Normal University Guilin 541004 China Departamento de Física Teórica and IFIC Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna Aptdo. 22085 46071 Valencia Spain Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China

We perform calculations for the Bs0→ J/ψπ0f0（980） and Bs0 → J/ψπ0a0（980） reactions, showing that the first is isospin-suppressed while the second is isospin-allowed. The reaction proceeds via a triangle mechanism, with Bs0 →J/ψK＊ K ＋c.c., followed by the decay K＊ →Kπ and a further fusion of KK into the f0（980） or a0（980）. We show that the mechanism develops a singularity around the π0 f0（980） or π0a0（980） invariant mass of 1420 MeV, where the π0f0 and π0a0 decay modes are magnified and also the ratio of π0f0 to π0a0 production. Using experimental information for the Bs0 → J/ψK＊K ＋c.c. decay, we are able to obtain absolute values for the reactions studied which fall into the experimentally accessible range. The reactions proposed and the observables evaluated, when contrasted with actual experiments, should be very valuable to obtain information on the nature of the low lying scalar mesons.

关键词： triangle singularity light scalar meson isospin violation bottom meson decay

肾细胞癌的早期动态FDG-PET/CT的临床作用评价

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国际医学放射学杂志 2016年第4期 461-461页

作者： R.Nakajima K.Abe T.Kondo K.Tanabe s.sakai 蒋苏香 Department of Diagnostic Imaging and Nuclear Medicine Tokyo Women’s Medical University

摘要目的通过研究早期动态(ED)和全身(WB)FDGPET/CT的价值来评价肾细胞癌。方法 100例病人共有107个肿瘤行肾ED和WB FDG-PET/CT检查。通过视觉化和半定量方法评价肾细胞癌在ED时期和WB时期FDG的积聚。

关键词：肾细胞癌 ED WB FDG-PET/CT PET CT

原发性醛固酮增多症病人肾上腺双静脉期增强MDCT对右肾上腺静脉的显示

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国际医学放射学杂志 2016年第5期 581-581页

作者： s.Morita Y.Nishina H.Yamazaki Y.sonoyama A.Ichihara s.sakai 郑烋 Department of Diagnostic Imaging and Nuclear Medicine (Radiology) Tokyo Women’s Medical University Hospital

摘要目的评估双肾上腺静脉期多层螺旋CT(MDCT)成像对原发性醛固酮增多症病人的右肾上腺静脉(RAV)显示率。方法回顾性分析90例已行肾上腺静脉血取样的原发性醛固酮增多症病人的肾上腺双静脉期MDCT增强扫描(延迟45 s与55 s)影像。2位影像... 详细信息

摘要目的评估双肾上腺静脉期多层螺旋CT(MDCT)成像对原发性醛固酮增多症病人的右肾上腺静脉(RAV)显示率。方法回顾性分析90例已行肾上腺静脉血取样的原发性醛固酮增多症病人的肾上腺双静脉期MDCT增强扫描(延迟45 s与55 s)影像。2位影像医师采用5分级法评分评估两期RAV显示情况,计算显示率。结果医师A评价第一及

关键词：肾上腺静脉醛固酮增多症原发性 MDCT 病人

Flow Rate Measurement of Gravity Infusion set and Functional Evaluation of Drop Counter: A Pilot study

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Journal of Biomedical science and Engineering 2024年第7期17卷 129-135页

作者： Rina sakai shuichi Tanaka Kaya Murakami Tomomi Mizuhashi Kazuhiro Yoshida Masanobu Ujihira Department of Medical Engineering and Technology Kitasato University School of Allied Health Sciences Sagamihara Japan Faculty of Medical Engineering Gunma University of Health and Welfare Maebashi Japan Kitasato University Graduate school of Medical sciences Sagamihara Japan

Developing a novel drop counter by introducing the Internet of Things concept has been vigorously conducted in recent years. Understanding the newly introduced drop counter’s flow rate control accuracy and flow rate count feature is essential for improving safety in infusion management. This study aimed to verify if the new drop counters could secure accurate flow rate and drip count by conducting actual flow rate measurements using gravimetry and functional evaluation. A drop counter was attached to each drip chamber of the infusion set, and an IV drip was conducted at the 100 ml/h flow rate. The weight of discharged physiological saline was measured to plot trumpet curves. Next, three different types of drop counters were evaluated to determine if they maintained drip count accuracy according to the changes in their position angles. The flow rate errors in all conditions indicated trumpet-like curves, exhibiting an overall error range within ±10% in all observation windows. Although every drop counter successfully detected and measured dripping, it was challenging in some counters to detect dripping when the drip chamber was tilted. In comparing adult and pediatric IV sets, the adult IV set was found to be less likely to detect dripping in the angled position. No significant differences in results were confirmed between high and low flow rates, suggesting that the drop count function would not be affected by the flow rate in the ranges of typical infusion practices. Doppler sensors have a wide range of measurements and high sensitivity;the dripping was detected successfully even when the drip chamber was tilted, probably due to the advantages of these sensors. In contrast, miscounts occurred in those equipped with infrared sensors, which could not detect light intensity changes in tilted positions. Understanding the tendencies in flow rate errors in infusion can be valuable information for infusion management.

关键词： Gravity Infusion set Drop Counter IV Fluids Flow Rate Trumpet Curves

stresses in the scapular Fossa Do Not Exceed the Yield stress When Elevated up to 135 Degrees of Abduction after Reverse shoulder Arthroplasty

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Journal of Biomedical science and Engineering 2024年第2期17卷 35-40页

作者： Rina sakai Tomonori Kenmoku Ryo Tazawa Kazuhiro Yoshida Tomomi Mizuhashi Masanobu Ujihira Department of Medical Engineering and Technology Kitasato University School of Allied Health Sciences Sagamihara Japan Department of Orthopedic surgery Kitasato University School of Medicine Sagamihara Japan Kitasato University Graduate school of Medical sciences Sagamihara Japan

Reverse shoulder arthroplasty (RsA) is an effective treatment for rotator cuff tears. Despite its advantages, complications occur at a high rate. Complications requiring revision include a high rate of base plate failure, 38% of which are due to instability. The primary stability the base plate ensures is a crucial factor and, thus, is the subject of much debate in clinical studies and biomechanical research. This study is aimed to provide data that will contribute to the base plate’s pri-mary stability and glenoid longevity by clarifying the stresses at the scapular fossa and base plate interface associated with elevation after RsA. A 3D finite element model was created from the DICOM data for the scapulohumeral joint and sMR shoulder system. For loading conditions, 30 N was applied for each posi-tion with abduction angles of 0, 45, 90, and 135 degrees. A three-dimensional fi-nite element analysis was performed using the static implicit method with Ls-DYNA. The von Mises stresses in the scapular fossa were found not to exceed the yield stress on the bone even after elevation to an abduction angle of 135 de-grees after RsA. It is rough to uniformly compare the yield stress and the von Mises stress, but it was inferred that the possibility of fracture is low unless a large external force is applied. A maximum von Mises stress showed 0 degrees of abduction, suggesting that the lowered position is in a more severe condition than the elevated position. If better improvement is desired, it may be necessary to devise ways to reduce the stress on the upper screw. .

关键词： Reverse shoulder Arthroplasty Finite Element Analysis Yield stress Glenoid

Measurements of dihadron correlations relative to the event plane in Au+Au collisions at√^(s)NN=200 GeV

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Chinese Physics C 2021年第4期45卷 198-241页

作者： H.Agakishiev M.M.Aggarwal Z.Ahammed A.V.Alakhverdyants I.Alekseev J.Alford B.D.Anderson C.D.Anson D.Arkhipkin G.s.Averichev J.Balewski D.R.Beavis N.K.Behera R.Bellwied M.J.Betancourt R.R.Betts A.Bhasin A.K.Bhat H.Bichsel J.Bieleik J.Bielcikova B.Biritz L.C.Bland W.Borowski J.Bouchet E.Braidot A.V.Brandin A.Bridgeman s.G.Brovko E.Bruna s.Bueltmann I.Bunzarov T.P.Burton X.Z.Cai H.Caines M.Calderon de la Barca sanchez D.Cebra R.Cendejas M.C.Cervantes Z.Chajecki P.Chaloupka s.Chattopadhyay H.F.Chen J.H.Chen J.Y.Chen L.Chen J.Cheng M.Cherney A.Chikanian K.E.Choi W.Christie P.Chung M.J.M.Codrington R.Corliss J.G.Cramer H.J.Crawford s.Dash A.Davila Leyva L.C.De silvat R.R.Debbe T.G.Dedovich A.A.Derevschikov R.Derradi de souza L.Didenko P.Djawotho s.M.Dogra X.Dong J.L.Drachenberg J.E.Draper J.C.Dunlop L.G Efimov M.Elnim J.Engelage G Eppley M.Estienne L.Eun O.Evdokimov R.Fatemi J.Fedorisin A.Feng R.G.Fersch P.Filip E.Finch V.Fine Y.Fisyak C.A.Gagliardi D.R.Gangadharan A.Geromitsos F.Geurts P.Ghosh Y.N.Gorbunov A.Gordon O.Grebenyuk D.Grosnick s.M.Guertin A.Gupta W.Guryn B.Haag O.Hajkova A.Hamed L-X.Han J.W.Harris J.P.Hays-Wehle M.Heinz s.Heppelmann A.Hirsch E.Hjort G.W.Hoffmann D.J.Hofiman B.Huang H.Z.Huang T.J.Humanic L.Huo G.Igo P.Jacobs W.W.Jacobs C.Jena F.Jin J.Joseph E.G.Judd s.Kabana K.Kang J.Kapitan K.Kauder H.Ke D.Keane A.Kechechyan D.Kettler D.P.Kikola J.Kiryluk A.Kisiel V.Kizka A.G.Knospe D.D.Koetke T.Kollegger J.Konzer I.Koralt L.Koroleva W.Korsch L.Kotchenda V.Kouchpil P.Kravtsov K.Krueger M.Krus L.Kumar P.Kurnadi M.A.C.Lamont J.M.Landgraf s.LaPointe J.Lauret A.Lebedev R.Lednicky J.H.Lee W.Leight M.J.LeVine C.Lil L.Li N.Li W.Li X.Li X.Li Y.Li Z.M.Li M.A.Lisa F.Liu H.Liu J.Liu T.Ljubicic W.J.Llope R.s.Longacre W.A.Love Y.Lu E.V.Lukashov X.Luo G.L.Ma Y.G.Mai D.P.Mahapatra R.Majka O.I.Mall L.K.Mangotra R.Manweiler s.Margetis C.Markert H.Masui H.s.Matis Yu.A.Matulenko D.MeDonald T.s.Mcshane A.Meschanin R.Milner N.G.Minaev s.Mioduszewski A.Mischke M.K.Mitrovski B.Mohanty M.M.Mondal B.Morozov D.A.Morozov M.G.Munhoz M Argonne National Laboratory Argonnellinois 60439USA Brookhaven National Laboratory UptonNew York 11973USA University of Califomia BerkeleyCaliformnia 94720USA University of California DavisCalifornia 95616USA University of Califormnia Los AngelesCalifomia 90095USA Universidade Estadual de Campinas Sao PauloBrazil University of Illinois at Chicago ChicagoIlinois 60607USA Creighton University OmahaNebraska 68178USA Czech Technical University in Prague FNSPEPrague11519Czech Republic Nuclear Physics Institute As CR 25068 Rez/PragueCzech Republic University of Frankfurt FrankfurtGermany Institute of Physics Bhubaneswar 751005India Indian Institute of Technology MumbaiIndia Indiana University BloomingtonIndiana 47408USA Alikhanov Instiute for Theoretical and Experimental Physics MoscowRussia University of Jammu Jammu 180001India Joint Institute for Nuclear Research Dubna141980Russia Kent state University KentOhio 44242USA University of Kentucky LexingtonKentucky40506-0055USA Institute of Modern Physics LanzhouChina Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720USA Massachusetts Institute of Technology CambridgeMA 02139-4307USA Mx-Planck-Institut fir Physik MunichGermany Michigan state University East LansingMichigan 48824USA Moscow Engineering Physics Institute Moscow Russia NIKHEF and Utrecht University AmsterdamThe Netherlands Ohio state University ColumbusOhio 43210USA Old Dominion University NorfolkVA23529USA Panjab University Chandigarh 160014India PennsyIvania state University University ParkPennsylvania 16802USA Institute of High Energy Physics ProtvinoRussia Purdue University West LafayetteIndiana 47907USA Pusan National University PusanRepublic of Korea University of Rajasthan Jaipur 302004India Rice University HoustonTexas 77251USA Universidade de sao Paulo Sao PauloBrazil University of science&Technology of China Hefei 230026.China shandong University JinanShandong 250100China shanghai Institute of Applied Physics Shanghai 201800Chi

Dihadron azimuthal correlations containing a high transverse momentum(pr)trigger particle are sensit-ive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium,*** measurements revealed a strong modification to di-hadron azimuthal correlations in Au+Au collisions with respect to ptp and d+Au *** modification in-creases with the collision centrality,suggesting a path-length or energy density dependence to the je-quenching *** paper reports sTAR measurements of dihadron azimuthal correlations in mid-central(20%-60%)Au+Au collisions at√^(s)NN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane,Ф_(s)=|Ф_(t)-ψ_(Ep)|.The azimuthal correlation is studied as a function of both the trigger and associated particle *** subtractions of the combinatorial background and anisotropic flow,assuming Zero Yield At Minimum(ZYAM),are *** correlation results are first discussed with subtraction of the even harmonic(elliptic and quadrangu-lar)flow *** away-side correlation is strongly modifed,and the modification varies withФ_(s),with a double-peak structure for out-of-plane trigger *** near-side ridge(long range pseudo-rapidity△_(η)correla-tion)appears to drop with increasingФ_(s)while the jet-like component remains approximately *** correla-tion functions are further studied with the subtraction of odd harmonic triangular flow background arising from *** is found that the triangular flow,while responsible for the majority of the amplitudes,is not sufficient to explain theφs-dependence of the ridge or the away-side double-peak *** dropping ridge withФ_(s)could be attributed to aФ_(s)-dependent lliptie anisotropy;however,the physics mechanism of the ridge remains an open *** with aФ_(s)-dependent elliptic flow,the away-side correlation structure

关键词： relativistic heavy ion collisions dihadron correlations jet-medium interactions anisotropic flow background event plane

Cellular response against cytosolic leakage of mitochondrial DNA: insights into the pathology of Parkinson’s disease

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Neural Regeneration Research 2022年第12期17卷 2682-2684页

作者： Akiko sakai Hideaki Matsui Department of Neuroscience of Disease Brain Research InstituteNiigata UniversityNiigataJapan

Mitochondria are important organelles for cellular metabolism and homeostasis,and their abnormalities are implicated in various *** mitochondria originate from protobacterium,their components are easily recognized by pathogen sensors called pattern-recognition receptors as foreign substances in the *** is prominent for mitochondrial DNA(mtDNA)which has different properties from nuclear DNA,such as low,if any,methylation status,vulnerability to oxidation due to the proximity to the oxidative phosphorylation machinery,and its circular *** studies indicate that perturbations in mitochondrial function and homeostasis cause mtDNA to leak into the cytoplasm,where it triggers the innate immune response(West and shadel,2017).Although inflammatory response is a cellular strategy to resist viral infections,it can also lead to undesirable outcomes by damaging own cells and tissues.

关键词： homeostasis metabolism insight