检索结果-南通市图书馆

Low-Energy Spin Excitations in Detwinned FeSe

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第6期41卷 112-118页

作者：刘瑞鲜 Mitsutaka Nakamura Kazuya Kamazawa 鲁兴业 Center for Advanced Quantum Studies School of Physics and AstronomyBeijing Normal UniversityBeijing 100875China J-PARC Center Japan Atomic Energy Agency(JAEA)TokaiIbaraki 319-1195Japan Research Center for Neutron Science and Technology Comprehensive Research Organization for Science and SocietyTokaiIbaraki 319-1106Japan

Antiferromagnetic spin fluctuation is regarded as the leading driving force for electron pairing in high-Tc *** iron-based superconductors,spin excitations at low energy range,especially the spin-resonance mode at ER~5kBTc,are important for understanding the ***,we use inelastic neutron scattering(INS)to investigate the symmetry and in-plane wave-vector dependence of low-energy spin excitations in uniaxial-strain detwinned Fe *** low-energy spin excitations(E<10 meV)appear mainly at Q=(±1,0)in the superconducting state(T9K)and the nematic state(T90 K),confirming the constant C_(2) rotational symmetry and ruling out the C_(4) mode at E≈3 meV reported in a prior INS ***,our results reveal an isotropic spin resonance in the superconducting state,which is consistent with the s±wave pairing *** slightly higher energy,low-energy spin excitations become highly *** full width at half maximum of spin excitations is elongated along the transverse *** Q-space isotropic spin resonance and highly anisotropic low-energy spin excitations could arise from dyz intra-orbital selective Fermi surface nesting between the hole pocket aroundΓpoint and the electron pockets centered at MX point.

关键词： excitation symmetry slightly

Evaluation of bacterial contamination and medium-term oncological outcomes of intracorporeal anastomosis for colon cancer:A propensity score matching analysis

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第3期16卷 670-680页

作者： Hajime Kayano Nana Mamuro Yutaro Kamei Takashi Ogimi Hiroshi Miyakita Toshio Nakagohri Kazuo Koyanagi Masaki Mori Seiichiro Yamamoto Department of Gastroenterological Surgery Tokai University School of MedicineIsehara 259-1193KanagawaJapan

BACKGROUND Although intracorporeal anastomosis(IA)for colon cancer requires longer operative time than extracorporeal anastomosis(EA),its short-term postoperative results,such as early recovery of bowel movement,have been reported to be equal or *** IA requires opening the intestinal tract in the abdominal cavity under pneumoperitoneum,there are concerns about intraperitoneal bacterial infection and recurrence of peritoneal dissemination due to the spread of bacteria and tumor ***,intraperitoneal bacterial contamination and medium-term oncological outcomes have not been *** cavity in *** Of 127 patients who underwent laparoscopic colon resection for colon cancer from April 2015 to December 2020,75 underwent EA(EA group),and 52 underwent IA(IA group).After propensity score matching,the primary endpoint was 3-year disease-free survival rates,and secondary endpoints were 3-year overall survival rates,type of recurrence,surgical site infection(SSI)incidence,number of days on antibiotics,and postoperative biological *** Three-year disease-free survival rates did not significantly differ between the IA and EA groups(87.2%and 82.7%,respectively,P=0.4473).The 3-year overall survival rates also did not significantly differ between the IA and EA groups(94.7%and 94.7%,respectively;P=0.9891).There was no difference in the type of recurrence between the two *** addition,there were no significant differences in SSI incidence or the number of days on antibiotics;however,postoperative biological responses,such as the white blood cell count(10200 vs 8650/mm^(3),P=0.0068),C-reactive protein(6.8 vs 4.5 mg/dL,P=0.0011),and body temperature(37.7 vs 37.5℃,P=0.0079),were significantly higher in the IA *** IA is an anastomotic technique that should be widely performed because its risk of intraperitoneal bacterial contamination and medium-term oncological outcomes are comparable to those of EA.

关键词： Colon cancer Intracorporeal anastomosis 3-year disease-free survival Recurrence Surgical site infection Postoperative biological response

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中子表征技术在金属结构材料研究中的应用

金属学报 2024年第8期60卷 1001-1016页

作者：王延绪龚武苏玉华李昺中国科学院金属研究所沈阳材料科学国家研究中心沈阳110016 Japan Proton Accelerator Research Complex Center Japan Atomic Energy AgencyTokai Ibaraki 319-1195Japan

结构材料的原子结构、微观组织与宏观性能的关联性是材料研究的核心问题之一,历久弥新。近年来,加速器基中子源大科学装置的建设和相关实验技术取得了长足进步,这为在实时原位条件下深入研究该问题提供了良好的基础。本文介绍了中子衍射... 详细信息

结构材料的原子结构、微观组织与宏观性能的关联性是材料研究的核心问题之一,历久弥新。近年来,加速器基中子源大科学装置的建设和相关实验技术取得了长足进步,这为在实时原位条件下深入研究该问题提供了良好的基础。本文介绍了中子衍射、Bragg边成像、小角中子散射、对分布函数分析、准弹性/非弹性中子散射等主要中子表征技术在结构材料中应用的最新进展,着重论述了钢铁材料相变内应力起源与演化、镁合金等轻金属材料的变形机制、基于Bragg边成像的微观结构及残余应力分析,并对今后发展趋势进行了简要展望。

关键词：中子散射相变弹塑性变形结构材料

专为电动汽车市场的轮胎和橡胶制品设计的炭黑

在线全文

学校读者我要写书评

暂无评论

橡塑技术与装备 2024年第10期50卷 82-86页

作者：章羽 Abegayl Thomas-Mc Millan Wesley Wampler Leszek Nikiel Michael Widmor Peter Cameron 全国橡塑机械信息中心北京100143 tokai Carbon CB Ltd.

本文探讨了特种炭黑材料EV 800在电动汽车轮胎和橡胶制品中的应用。EV 800具有可持续性、高结构和适宜的表面积,且已通过ISCC Plus认证,它能增强轮胎强度和耐久性,减少滚动阻力,提升电动汽车的能效。本文总结了EV 800对轮胎性能的积极影... 详细信息

本文探讨了特种炭黑材料EV 800在电动汽车轮胎和橡胶制品中的应用。EV 800具有可持续性、高结构和适宜的表面积,且已通过ISCC Plus认证,它能增强轮胎强度和耐久性,减少滚动阻力,提升电动汽车的能效。本文总结了EV 800对轮胎性能的积极影响,并通过实验对比确认了其作为电动汽车轮胎材料的适宜性,强调了其强度、能效提升和可持续性特点。

关键词： EV 800 炭黑材料滚动阻力可持续性

NON-STATIONARY STOKES FLOWS UNDER LEAK BOUNDARY CONDITIONS OF FRICTION TYPE

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 2001年第1期19卷 1-8页

作者： Hiroshi Fujita (The Research institute of Educational Development, tokai University, Shibuya-ku, Tokyo 151-0063, Japan) tokai University 日本 151-0063

Examines the initial value problem for non-stationary Stokes flows, under a non-linear boundary conditions which can be called the leak boundary condition of friction type. Examination of the solvability of the initia... 详细信息

关键词： Stokes equation leak boundary condition nonlinear semigroup

Accuracy and Utility of Vessel Analysis Using Non-Contrast CT for Planning Endovascular Aortic Repair

在线全文

学校读者我要写书评

暂无评论

Open Journal of Medical Imaging 2024年第3期14卷 96-105页

作者： Midori Komita-Moriya Yukihisa Ogawa Akiyuki Kotoku Shintaro Nawata Kenji Kuramochi Yasuyoshi Ogawa Kiyoshi Chiba Hiroshi Nishimaki Hidefumi Mimura Department of Radiology St. Marianna University School of Medicine Kanagawa Japan Department of Radiology Tokai University School of Medicine Hachioji Hospital Tokyo Japan Radiological Technology St. Marianna University School of Medicine Kanagawa Japan Department of Cardiovascular Surgery St. Marianna University School of Medicine Kanagawa Japan

Objectives: This study aimed to determine whether errors in vascular measurements would affect device selection in endovascular aortic repair (EVAR) by comparing measurements obtained using non-contrast computed tomography (NCT) with those obtained using contrast-enhanced CT (CECT). Materials and Methods: This single-center, retrospective study included 25 patients who underwent EVAR for abdominal aortic aneurysm at our institution. A 1-mm horizontal cross-sectional slice of NCT and CECT from each patient was retrospectively reviewed. The area from the abdominal aorta to the common iliac artery was divided into four zones. A centerline was created using the NCT by manually plotting the center points. Subsequently, the centerlines were automatically extracted and manually corrected during the arterial phase of CECT. The diameter and length of each zone were measured for each modality. The mean diameters and lengths of the target vessels were compared between NCT and CECT. Results: The measurements obtained using both methods were reproducible and demonstrated good agreement. The mean differences in vessel length and diameter measurements for each segment between NCT and CECT were not statistically significant, indicating good consistency. Conclusion: NCT may be useful for preoperative EVAR evaluation in patients with renal dysfunction or allergies to contrast agents.

关键词： Non-Contrast CT Vessel Analysis EVAR Contrast-Enhanced CT Abdominal Aortic Aneurysm

H_∞Loop Shaping Control for Plasma Vertical Position Instability on QUEST

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2013年第3期15卷 295-299页

作者：刘晓龙 Kazuo NAKAMURA Tatsuya YOSHISUE Osamu MITARAI Makoto HASEGAWA Kazutoshi TOKUNAGA 薛二兵 Hideki ZUSHI Kazuaki HANADA Akihide FUJISAWA Hiroshi IDEI Shoji KAWASAKI Hisatoshi NAKASHIMA Aki HIGASHIJIMA Kuniaki ARAKI IGSES Kyushu University RIAM Kyushu University tokai University

QUEST has a divertor configuration with a high and a negative n-index, and the problem of plasma vertical position instability control in QUEST is still under extensive study for achieving high efficiency plasma. The instability we considered is that the toroidal plasma moves either up or down in the vacuum chamber until it meets the vessel wall and is extinguished. The actively controlled coils （HCU and HCL） outside the vacuum vessel are serially connected in feedback with a measurement of the plasma vertical position to provide stabilizing control. In this work, a robust controller is employed by using the loop synthesis method, and provides robust stability over a wide range of n-index. Moreover, the gain of the robust controller is lower than that of a typical proportional derivative （PD） controller in the operational frequency range; it indicates that the robust controller needs less power consumption than the PD controller does.

关键词： vertical position instability robust control loop shaping QUEST

Risk factors for proximal migration of biliary tube stents

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第5期20卷 1318-1324页

作者： Yoshiaki Kawaguchi Masami Ogawa Yohei Kawashima Hajime Mizukami Atsuko Maruno Hiroyuki Ito Tetsuya Mine Department of Gastroenterology Tokai University School of Medicine

AIM: To analyze the risk factors for biliary stent migration in patients with benign and malignant strictures.

关键词： Migration Endoscopic biliary stent Risk factor Endoscopic retrograde cholangiopancreatography Retrieval

Multi-quasiparticle excitations in ^(145)Tb

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2004年第5期47卷 561-570页

作者： T. Hayakawa M. Oshima T. Toh T. Shizuma J. Katakura Y. Hatsukawa M. Matsuda H. Kusakari M. Sugawara Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanChiba University Inage-ku Chiba 263-8512 JapanChiba Institute of Technology Narashino Chiba 275-0023 Japan

High-spin states in 145Tb have been populated using the 118Sn (32S, 1p4n) reaction at beam energy of 165 MeV. The level scheme of 145Tb has been established up to Ex ≈7.4 MeV. The level scheme shows characteristics of a spherical or slightly oblate nucleus. Based on the systematic trends of the level structure in the neighboring N = 80 isotones, the level structure in 145Tb below 2 MeV excitation is well explained by coupling an h11/2valence proton to the even-even 144Gd core. Above 2 MeV excitation, most of the yrast levels are interpreted with multi-quasiparticle shell-model configurations.

关键词： high-spin states, level scheme, multi-quasiparticle excitations.