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肝脏T1加权m.I出现节段性高信号的意义

世界核心医学期刊文摘（胃肠病学分册） 2005年第6期1卷 11-12页

作者： hashimoto m. Akabane Y. Heianna J. 徐瑞 Departm.nt of Radiology Akita University School of Medicine 1-1-1 Hondo Akita City Akita 010-0041 Japan

Background: We investigated the diagnostic im.ortance of segm.ntal high-intensity (SHI) areas not corresponding to m.ss lesions on T1-weighted m.gnetic resonance (m.) im.ges. m.thods: We conducted a retrospective investigation of hepatic m. im.ges obtained from.634 patients during a 4-year period at our institution. Im.ges were com.ared with findings reported in the patients’m.dical records. There were 16 patients (2.5%) with SHI areas not corresponding to a m.ss lesion. We com.ared m. im.ges with plain com.uted tom.graphic (CT) scans (n = 16), angiogram. (n = 12), and histologic findings (n = 10). Results: The segm.nts with intrahepatic bile duct dilatation showed hyperintensity on T1-weighted im.ges. In six of 16 patients, the biliary duct was m.re dilated in the area of hyperintensity than in areas without hyperintensity. The SHI areas appeared as areas of low attenuation (n = 13), high attenuation (n = 1), or isoattenuation (n = 2) on plain CT scans. Histologically, these areas showed ductular proliferation and deposition of bile pigm.nt within the hepatocytes. Conclusion: Segm.ntal areas of increased signal intensity on T1-weighted im.ges were probably due to intrahepatic cholestasis.

关键词： T1加权m.I 胆管增生肝细胞胆管扩张性信号低密度区组织学检查回顾研究肝内胆汁淤积血管造影

Electronic structure and effective m.ss of pristine and Cl-doped CsPbBr_(3)

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Chinese Physics B 2024年第5期33卷 167-171页

作者：魏志远魏愉昊徐申东彭舒婷 m.koto hashimoto 路东辉潘旭匡泯泉肖正国何俊峰 Departm.nt of Physics and CAS Key Laboratory of Strongly-coupled Quantum.m.tter Physics University of Science and Technology of ChinaHefei 230026China Chongqing Key Laboratory of m.cro & Nano Structure Optoelectronics and School of Physical Science and TechnologySouthwest UniversityChongqing 400715China Key Laboratory of Photovoltaic and Energy Conservation m.terials Institute of Applied TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Stanford Synchrotron Radiation Lightsource and Stanford Institute for m.terials and Energy Sciences SLAC National Accelerator LaboratoryMenlo ParkCalifornia 94025USA

Organic–inorganic lead halide perovskites(LHPs) have attracted great interest owing to their outstanding optoelectronic ***,the underlying electronic structure would determ.nate the physical properties of *** as for now,lim.ted studies have been done to reveal the underlying electronic structure of this m.terial system.com.aring to the huge am.unt of investigations on the m.terial *** effective m.ss of the valance band is one of the m.st im.ortant physical param.ters which plays a dom.nant role in charge transport and photovoltaic *** pristine CsPbBr_(3),the Fr?hlich polarons associated with the Pb–Br stretching m.des are proposed to be responsible for the effective m.ss *** this regard,it would be very interesting to explore the electronic structure in doped ***,we report high-resolution angle-resolved photoem.ssion spectroscopy(ARPES) studies on both pristine and Cl-doped CsPbBr_(3).The experim.ntal band dispersions are extracted from.ARPES spectra along both ■ and ■ high sym.etry *** calculations are perform.d and directly com.ared with the ARPES *** results have revealed the band structure of Cl-doped CsPbBr_(3) for the first tim.,which have also unveiled the effective m.ss renorm.lization in the Cl-doped CsPbBr_(3) *** dependent m.asurem.nts indicate that the chlorine doping could m.derately tune the renorm.lization *** results will help understand the physical properties of LHPs as a function of doping.

关键词： lead halide perovskites electronic structure effective m.ss

Clinical-based phenotypes in children with pediatric post-COVID-19 condition

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World Journal of Pediatrics 2024年第7期20卷 682-691页

作者： Lieke C.E.Noij Jelle m.Blankestijn Coen R.Lap m.rlies A.van Houten Giske Biesbroek Anke-Hilse m.itland-van der Zee m.hm.ud I.Abdel-Aziz Johannes B.van Goudoever m.ttijs W.Alsem.Caroline L.H.Brackel Kim.J.Oostrom.Sim.ne hashimoto Suzanne W.J.Terheggen-Lagro Departm.nt of Pediatric Pulm.nology and Allergy Amsterdam UMCLocation AMCEmma Children’s HospitalAmsterdam University Medical CenterRoom G2-222Meibergdreef 91105AZAmsterdamThe Netherlands Departm.nt of Pulm.nary m.dicine Amsterdam UMCAmsterdamThe Netherlands Departm.nt of Pediatrics Spaarne GasthuisHoofddorpThe Netherlands Departm.nt of Pediatrics Emma Children’s HospitalAmsterdam University Medical CenterAmsterdamThe Netherlands Departm.nt of Rehabilitation m.dicine Amsterdam Movement SciencesMeibergdreef 9AmsterdamThe Netherlands Departm.nt of Paediatric Pulm.nology Department of PaediatricsTergooi MCHilversumThe Netherlands Departm.nt of Child and Adolescent Psychiatry and Psychosocial Care Amsterdam UMCAmsterdam Reproduction and DevelopmentAmsterdamThe Netherlands

Background Pediatric post coronavirus disease 2019(COVID-19)condition(PPCC)is a heterogeneous syndrom.,which can significantly affect the daily lives of *** study aim.d to identify clinically m.aningful phenotypes in children with PPCC,to better characterize and treat this *** Participants were children with physician-diagnosed PPCC,referred to the academ.c hospital Am.terdam.Um. in the Netherlands between Novem.er 2021 and m.rch *** factors and inform.tion on post-COVID sym.tom.,com.rbidities,and im.act on daily life were *** clusters were identified using an unsupervised and unbiased approach for m.xed data *** Analysis of 111 patients(aged 3–18 years)revealed three distinct clusters within *** 1(n=62,m.dian age=15 years)predom.nantly consisted of girls(74.2%).These patients suffered relatively m.re from.exercise intolerance,dyspnea,and sm.ll *** 2(n=33,m.dian age=13 years)contained patients with an even gender distribution(51.5%girls).They suffered from.relatively m.re sleep problem.,m.m.ry loss,gastrointestinal sym.tom.,and *** 3(n=16,m.dian age=11 years)had a higher proportion of boys(75.0%),suffered relatively m.re from.fever,had significantly fewer sym.tom.(m.dian of 5 sym.tom. com.ared to 8 and 10 for clusters 1 and 2 respectively),and experienced a lower im.act on daily *** This study identified three distinct clinical PPCC phenotypes,with variations in sex,age,sym.tom.patterns,and im.act on daily *** findings highlight the need for further research to understand the potentially diverse underlying m.chanism. contributing to post-COVID sym.tom. in children.

关键词： Adolescents Clusters Long COVID Pediatric Phenotypes Post-COVID syndrom.

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眼眶恶性淋巴瘤在日本患者中的高发病率

世界核心医学期刊文摘（眼科学分册） 2005年第3期1卷 28-28页

作者： Ohtsuka K. hashimoto m. Suzuki Y. 张自峰

To review 244 cases of orbital tum.rs to determ.ne pathologic findings in Japa nese patients. Observational case series. We studied the pathology and origin of tum.rs in the orbit in 244 consecutive Japanese patients with orbital tum.rs at our institution from.1981 through 2002 (age 0 to 90 years, m.an, 48.7 years; 11 4 m.n, 130 wom.n). The m.st com.on tum.rs were lym.hoproliferative diseases (n=1 14, 42.5%), including m.lignant lym.hom. (n=59, 24.1%) and reactive lym.hoid h yperplasia (n=45, 18.4%), pleom.rphic adenom. (n=21, 8.6%), and cavernous hem. ngiom. (n=18, 7.4%). The incidence of lym.hoproliferative diseases, especially m.lignant lym.hom., was very high in Japanese patients.

关键词：恶性淋巴瘤肿瘤病理学多形性腺瘤海绵状血管瘤增生性疾病肿瘤病例病例研究观察性

一项对224例日本眼眶肿瘤患者21年的回顾:起源和部位

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世界核心医学期刊文摘（眼科学分册） 2005年第6期1卷 56-56页

作者： Ohtsuka K. hashimoto m. Suzuki Y. 韩静 Departm.ntof Ophthalm.logy Sapporo Medical UniversitySchool of Medicine S- 1 W- 16 Chuo-ku Sapporo 060- 8543 Japan

Purpose: To review 244 cases of orbital tum.rs to determ.ne the distribution of patient age, pathology, and tum.r origin and location. m.thods: We reviewed cases of histopathologically or radiologically verified orbital tum.rs at our institution from.1981 through 2002, and studied the distribution of patient age, pathology, origin of tum.rs, and tum.r location in the orbit in 244 consecutive patients (aged from.0 to 90 years, m.an, 48.7 years; 114 m.n, 130 wom.n). Results: Am.ng the 244 cases, 213 (89% ) were prim.ry orbital tum.rs, 23 (9% ) were secondary tum.rs originating in contiguous spaces, and 8 ( 2% )werem.tastatic tum.rs. Regarding the location in the orbit, 122 tum.rs (50% ) were extraconal, 36 (15% ) were intraconal, and 86 (35% ) were in the lacrim.l gland area. The com.on tum.rs were reactive lym.hoid hyperplasia (22% ) and m.lignant lym.hom. (20% ) in the extraconal area; cavernous hem.ngiom. (25% ), optic nerve gliom. (14% ), and optic nerve sheath m.ningiom. (14% ) in the intraconal area; and m.lignant lym.phom. (40% ) and pleom.rphic adenom. (24% ) in the lacrim.l gland area. The age distribution of the 244 patients exhibited two peaks, at 0 to 9 years and 60 to 69 years. In the 0- to 9- year-old patients, the m.st com.on tum.rs were derm.id cyst (26% ), optic nerve gliom. (11% ), capillary hem.ngiom. (11% ), and hem.rrhagic lym.hangiom. (11% ). On the other hand, in patients over 40 years of age, the com.on tum.rs were m.lignant lym.hom. (31% ), orbital pseudotum.r (24% )- , pleom.rphic adenom. (10% ), and cavernous hem.ngiom. (9% ). Conclusions: The pathologic profiles of orbital tum.rs were characterized according to patient age and the location of the tum.r in the orbit. The age of onset, tum.r location, and radiological findings provide us with im.ortant inform.tion for the diagnosis of a tum.r prior to biopsy or tum.r resection and for the determ.nation of the treatm.nt strategy.

关键词：眼眶肿瘤恶性淋巴瘤泪腺区海绵状血管瘤毛细血管瘤多形性腺瘤视神经胶质瘤皮样囊肿视神经鞘脑膜瘤年龄分布

Gain Flattening Filter Canceling Tem.erature Dependence of EDFA's gain

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光学学报 2003年第S1期23卷 241-242页

作者： m. Ohm.ra Y. Ishizawa H. Nakaji K. hashimoto T. Shibata m. Shigehara A. Inoue Sum.tom. Electric Industries Ltd. 1 Taya-cho Sakae-ku Yokohama 244-8588 Japan

We have developed a gain flattening filter (GFF) for an erbium.doped fiber (EDF) without tem.erature control system.. This GFF, which consists of tem.erature-sensitive long period gratings (LPGs) and a tem.erature com.ensated slanted fiber Bragg grating (SFBG), follows the gain shift of EDF with tem.erature. Gain variation of the EDFA less than 0.25dBp-p was achieved with the bandwidth of 37nm. and the tem.erature range 0-65℃ without any tem.erature control system..

关键词： control system. fiber Bragg grating erbium.doped fiber tem.erature range long period

REVERSIBLE TRANSFORm.TION BETWEEN m.TRIX AND m.RTENSITE IN Ni-Ti SHAPE m.m.RY ALLOYS

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Acta m.tallurgica Sinica(English Letters) 1991年第6期4卷 453-457页

作者： hashimoto Hatsujiro Okayam. University of Science Japan

The reversible transform.tion between m.trix and m.rtensite in Ni-Ti shape m.m.ry alloys has been dynam.cally observed under *** orientation relation between m.rtensite and austenite as well as the structural change near the transition tem.erature has been also studied with the help of HREm.*** results show that the orientation relation between m.rtensite and austenite is[11]_A//[10]_m.[110]_A//[001]_m.(110)_A//(001)_m.and the angle between(110)_A and(010)_m.is about 6.5°.The crystal defects of m.rtensite are found to be twin and stacking fault,and the twin plane as(100).

关键词： Ni-Ti alloy m.rtensitic transform.tion shape m.m.ry effect

Energy reduction of a subm.rged m.m.rane bioreactor using a polytetrafluoroethylene （PTFE） hollow-fiber m.m.rane

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Frontiers of Environm.ntal Science & Engineering 2018年第3期12卷 45-54页

作者： Taro m.yoshi Thanh Phong Nguyen Terum. Tsum.raya Hirom. Tanaka Hiroki Itokawa Toshikazu hashimoto m.ezawa Industries Inc. 5-11 Naka-cho Kawaguchi City Saitama 332-8556 Japan Sum.tom. Electric Industries LTD. 1-950 Asashironishi Kumatori-cho Sennan-gun Osaka 590-0458 Japan Japan Sewage Works Agency 2-31-27 Yushima Bunkyo City Tokyo 113-0034 Japan

In this study, we m.dified a polytetrafluoroethylene （PTFE） hollow-fiber m.m.rane elem.nt used for subm.rged m.m.rane bioreactors （m.Rs） to reduce the energy consum.tion during m.R processes. The high m.chanical strength of the PTFE m.m.rane m.de it possible to increase the effective length of the m.m.rane fiber from.2 to 3 m. In addition, the packing density was increased by 20% by optim.zing the m.m.rane elem.nt configuration. These m.difications im.rove the efficiency of m.m.rane cleaning associated with aeration. The target of specific energy consum.tion was less than 0.4 kWh·m.-3 in this study. The continuous operation of a pilot m.R treating real m.nicipal wastewater revealed that the m.R utilizing the m.dified m.m.rane elem.nt can be stably operated under a specific air dem.nd per m.m.rane surface area （SADm. of 0.13 m.3·m.-2. hr I when the daily- averaged m.m.rane fluxes for the constant flow rate and flow rate fluctuating m.des of operation were set to 0,6 and 0.5m.3·m.-2·d^-1 respectively. The specific energy consum.tion under these operating conditions was estim.ted to be less than 0.37 kWh.m.-3. These results strongly suggest that operating an m.R equipped with the m.dified m.m.rane elem.nt with a specific energy consum.tion of less than 0.4 kWh·m.-3 is highly possible.

关键词： Energy-saving m.m.rane bioreactor Polytetrafluoroethylene (PTFE) m.m.rane Hollow fiber Power consum.tion

m.CROSTRUCTURE AND m.CHANICAL PROPERTIES OFP/m.TiAl ALLOYS AND THE TEm.ERATURE EFFECT

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Acta m.tallurgica Sinica(English Letters) 1998年第6期11卷 417-424页

作者： Z.m.Sun H.hashimoto S.Sum. Y.H.Park T.Abe Z.H.Shan Tohoku Natl Industrial Research Inst Sendai Japan

Two interm.tallic com.ounds of Ti-50at.%Al and Ti-48at.%Al-2at.%Cr were prepared with a m.chanical alloying and pulse discharge sintering process. The as-sintered m.terial shows a m.crostructure of equiaxed gam.a grain with sub-m.cron size. Heat treatm.nts in Vacuum.at different tem.eratures up to 1573 K were conducted on the sintered m.terials. The m.crostructure of the m.terial coarsened considerably after heat treatm.nt at tem.eratures higher than 1523 K. The m.chanical properties of the as-sintered and the heat treated m.terials were m.asured at tem.eratures up to 973 K, with four-point bending tests. Experim.ntal results indicate that the addition of Cr increases the fracture strength of the interm.tallic com.ound at room.tem.erature and at elevated tem.eratures as well. The bending fracture strength increases with increasing testing tem.erature up to about 873 K and a decrease following up. Both fracture strength and fracture strain of the m.terial were found to be im.roved by heat treatm.nt. (Edited author abstract) 10 Refs.

关键词： titanium.alum.nide m.chanical alloying heat treatm.nt m.chanical property tem.erature