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The 2023 Turkey earthquake doublet: Earthquake relocation, seismic tomography, and stress field inversion

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Earth and Planetary Physics 2024年第3期8卷 535-548页

作者： HuiLi Zhan Ling Bai Bagus Adi Wibowo ChaoYa Liu Kazuo Oike Yuzo ishikawa State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Center of Earthquake and Tsunami Agency of MeteorologyClimatology and GeophysicsJakarta 10610Indonesia University of Shizuoka Shizuoka 422-8526Japan Shizuoka University Shizuoka 422-8529Japan

On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic *** seismic events occurred along the East Anatolian Fault Zone,a convergent boundary between the Arabian Plate and the Anatolian *** this study,we analyze the M_(W) 7.8 and M_(W) 7.5 earthquakes by comparing their aftershock relocations,tomographic images,and stress field *** earthquakes were localized in the upper crust and exhibited steep dip ***,the aftershocks occurred either close to the boundaries of low and high P-wave velocity anomaly zones or within the low P-wave velocity anomaly *** East Anatolia Fault,associated with the M_(W) 7.8 earthquake,and the SürgüFault,related to the M_(W) 7.5 earthquake,predominantly experienced shear ***,their western sections experienced a combination of strike-slip and tensile stresses in addition to shear *** ruptures of the M_(W) 7.8 and M_(W) 7.5 earthquakes appear to have bridged a seismic gap that had seen sparse seismicity over the past 200 years prior to the 2023 Turkey earthquake sequence.

关键词： Turkey earthquake doublet earthquake relocation seismic tomography stress field seismicity

History of Western Philosophy and Quantum Language (Including Quantum Mechanics, Statistics, Fuzzy Logic, etc.)

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Journal of Applied Mathematics and Physics 2024年第5期12卷 1769-1795页

作者： Shiro ishikawa Department of Mathematics Faculty of Science and Technology Keio University Yokohama Japan

Although there are many different types of philosophy, many philosophers agree that the mainstream of Western philosophy (Socrates, Plato, Aristotle, Descartes, Kant, Wittgenstein) developed toward the perfection of Socrates’ absolutism. But can the absolutism maintain its central position after analytic philosophy? There are pessimistic views on this problem, such as that of R. Rorty, the standard-bearer of neo-pragmatism. Recently, I proposed quantum language (which is including quantum mechanics, statistics, fuzzy sets, etc.). I think that that this theory is not only one of the most fundamental scientific theories, but also the scientific final destination of Western philosophy. If so, Socrates’ dream has come true. The purpose of this paper is to discuss the above and to inform readers that quantum language has the power to create a paradigm shift from the classical mechanical world view to the quantum mechanical worldview.

关键词： Quantum Language Linguistic Copenhagen Interpretation Fuzzy Logic

Evaluation with Heart Rate Variability for the Treatment Effect of Aminophylline in Patients with Bradycardia after Cervical Spinal Cord Injury: A Preliminary Study

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Open Journal of Orthopedics 2013年第1期3卷 10-13页

作者： noriyuki ishikawa Naohisa Miyakoshi Tetsuya Suzuki Akiko a Misaw Yuichi Takano Yoichi Shimada Department of Orthopedic Surgery Akita Prefectural Center on Development and Disa- bility Akita Japan Department of Orthopedic Surgery Akita Red Cross Hospital Akita Japan Department of Orthopedic Surgery Akita University Graduate School of Medicine Akita Japan Iwai Orthopaedic Medical Hospital Tokyo Japan

After cervical spinal cord injury (SCI), the autonomic nervous system (ANS) becomes impaired and then, bradycardia can develop. In view of this, we performed to prescribe aminophylline as pharmacotherapy for bradycardia. The study population consisted of 36 patients with cervical SCI. Bradycardia developed in 20 patients (55.6%), of these patients, 8 showed spontaneous recovery. Twelve patients had persistent bradycardia, therefore, aminophylline was administered at 0.5 mg/kg/hr by intravenous infusion. Their average heart rate increased within 24 hours after the start of infusion. In heart rate variability analysis for 7 preliminarily selected patients, the spectral waveforms of “oligowave type” indicating ANS impairment tended to appear in relatively early phase after injury (i.e., 2 days to 2 weeks after injury), whereas “normal type” was observed in the late phase (i.e., at 4 weeks). “Sympathetic block type” was observed throughout the follow-up period (2 days to 4 weeks). “Sympathetic block type” was also observed in a non-bradycardic patient on day 2. These results underscore the importance of treating ANS impairment with aminophylline while keeping in mind that bradycardia can occur even in post-SCI patients without clinical manifestations.

关键词： Spinal Cord Injury Aminophylline Heart Rate Variability Autonomic Nervous System Bradycardia

Simple procedure for assessing diffuse subarachnoid hemorrhage successfully created using filament perforation method in mice

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Animal Models and Experimental Medicine 2024年第1期7卷 77-81页

作者： Tatsushi Mutoh Ryota Tochinai Hiroaki Aono Masayoshi Kuwahara Yasuyuki Taki Tatsuya ishikawa Department of Surgical Neurology Research Institute for Brain and Blood VesselsAkita Cerebrospinal and Cardiovascular CenterAkitaJapan Department of Aging Research and Geriatric Medicine Institute of DevelopmentAging and CancerTohoku UniversitySendaiJapan Department of Veterinary Pathophysiology and Animal Health Graduate School of Agriculture and Life SciencesThe University of TokyoTokyoJapan

The murine model of subarachnoid hemorrhage(SAH)is a valuable experimental tool for investigating molecular and cellular mechanisms,and the endovascular filament perforation technique can be used to simulate prominent pathophysiological features observed after human SAH;however,current validation methods for assessing an appropriate SAH model are ***,we introduce a simple procedure for se-lecting a mouse model of diffuse *** was induced in 24 mice using a standard filament perforation *** confirming survival at 24 h,SAH was scored 0-1 based on T2*-weighted images on whole-brain magnetic resonance imaging(MRI)and visual surveillance of the cisterna magna(CM)through the dura *** CM-based SAH grading correlated well with a reference parameter defined by extracted brain(r^(2)=0.53,p<0.0001).The receiver operating characteristic curve revealed a sensi-tivity of 85%and a specificity of 91%for detecting diffuse SAH,with a similar area under the curve(0.89±0.06[standard error of the mean])as the MRI-based grading(0.72±0.10,p=0.12).Our data suggest that confirming an SAH clot in the CM is a valuable way to select a clinically relevant diffuse SAH model that can be used in future experimental studies.

关键词： cisterna magna clot distribution filament perforation mouse model subarachnoid hemorrhage

“四大文明”学说的形成与传播:跨越世纪的对话

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中山大学学报（社会科学版） 2024年第4期64卷 1-12页

作者： [日]石川祯浩王丹(译) 京都大学人文科学研究所日本京都6068501 华东政法大学日语系上海200042

“四大文明”是中日两国世界史的“常识”。近年,两国分别有学者指出,“四大文明”学说只在本国通用,在世界其他国家并不存在。通过查找史料得知,“四大文明”学说源于卡尔·李特尔、卡普、西莱和黑格尔等西方思想家、历史学家,之后东... 详细信息

“四大文明”是中日两国世界史的“常识”。近年,两国分别有学者指出,“四大文明”学说只在本国通用,在世界其他国家并不存在。通过查找史料得知,“四大文明”学说源于卡尔·李特尔、卡普、西莱和黑格尔等西方思想家、历史学家,之后东亚的知识分子将其进行了概念化。这一传播过程跨越了历史学、地理学、人类学、文明学等学术领域的界限,是东西方知识分子对话的结果,同时也是一场跨越世纪的对话。

关键词： “四大文明”学说梁启超浮田和民卡尔·李特尔人文地理学黑格尔

Tumor size discrepancy between endoscopic and pathological evaluations in colorectal endoscopic submucosal dissection

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World Journal of Gastrointestinal Endoscopy 2024年第3期16卷 136-147页

作者： Takeshi Onda Osamu Goto Toshiaki Otsuka Yoshiaki Hayasaka Shun Nakagome Tsugumi Habu Yumiko ishikawa Kumiko Kirita Eriko Koizumi Hiroto Noda Kazutoshi Higuchi Jun Omori Naohiko Akimoto Katsuhiko Iwakiri Department of Gastroenterology Nippon Medical SchoolGraduate School of MedicineBunkyo-ku 113-8603TokyoJapan Endoscopy Center Nippon Medical School HospitalBunkyo-ku 113-8603TokyoJapan Department of Hygiene and Public Health Nippon Medical SchoolBunkyoku 113-8603TokyoJapan Center for Medical Education Nippon Medical SchoolBunkyo-ku 113-8603TokyoJapan

BACKGROUND Tumor size impacts the technical difficulty and histological curability of colorectal endoscopic submucosal dissection(ESD);however,the preoperative evaluation of tumor size is often different from histological *** influential factors on failure to obtain an accurate tumor size evaluation could help prepare optimal conditions for safer and more reliable *** This was a retrospective study conducted at a single institution.A total of 377 lesions removed by colorectal ESD at our hospital between April 2018 and March 2022 were *** first assessed the difference in size with an absolute per-centage of the scaling ***,we compared the clinicopatho-logical characteristics of the correct scaling group(>-33%and33%),which was further subdivided into the underscaling group(-33%or less of the discrepancy)and overscaling group(33%or more of the discrepancy),*** secondary outcome measures,parameters on size estimation were compared between the underscaling and correct scaling groups,as well as between the overscaling and correct scaling ***,multivariate analysis was performed in terms of the following relevant parameters on size estimation:Pathological size,location,and possible influential factors(P<0.1)in the univariate *** The mean of absolute percentage in the scaling discordance was 21%,and 91 lesions were considered to be incorrectly estimated in *** incorrect scaling was significantly remarkable in larger lesions(40 mm vs 28 mm;P<0.001)and less experience(P<0.001),and these two factors were influential on the underscaling(75 lesions;P<0.001).Conversely,compared with the correct scaling group,16 lesions in the overscaling group were significantly small(20 mm vs 28 mm;P<0.001),and the small lesion size was influential on the overscaling(P=0.002).CONCLUSION Lesions indicated for colorectal ESD tended to be underestimate

关键词： Endoscopic submucosal dissection Colorectal tumor Tumor size Size estimation Size discrepancy

Physical Properties of Liquid Terbium Measured by Levitation Techniques

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Journal of Rare Earths 2007年第6期25卷 665-669页

作者： Paul-Francois Paradis Takehiko ishikawa noriyuki Koike Yuki Watanabe Japan Aerospace Exploration Agency Institute of Space and Astronautical Science ISS Science Project Office 2-1-1 Sengen Tsukuba Ibaraki 305-8505 Japan Chiba Institute of Technology Tsudanuma Narashino Chiba Japan Advanced Engineering Service Co. Ltd. Tsukuba Ibaraki 305-0032 Japan

To understand the nature and behavior of rare earth metals in their liquid phases, accurate values of their physical properties are essential. However, to measure their physical properties, the samples should be maintained in liquid phases for prolonged time, and this raises a formidable challenge. This is mainly explained by their high melting temperatures （e.g., 1629 K for Tb）, high vapor pressure, and the risk of melt contamination with a crucible or support. An electrostatic levitation furnace alleviated these difficulties and allowed the determination of density, surface tension, and viscosity of several metals above their melting temperature. Here, first, the levitation furnace facility and the noncontact diagnostic procedures were briefly discussed, followed by the explanation of their thermophysical property measurements over wide temperature ranges. The density was obtained using an ultraviolet-based imaging technique that allowed excellent illumination, even at elevated temperatures. Over the 1615 to 1880 K temperature span, the density measurements could be expressed as p（T） =7.84 × 10^3 -0.47 （T - Tm）（kg · m^-3） with Tm = 1629 K, yielding a volume expansion coefficient a（T） = 6.0 × 10^-5 （K^-1）. In addition, the surface tension and the viscosity could be determined by inducing a drop oscillation to a molten sample. Using this technique, the surface tension data could be expressed as σ（T） = 8.93 × 10^2 - 0.10 （T - Tm）（mN· m^-1） and those for viscosity as η（T） =0.583 exp [4.1 × 10^4/（RT）] （MPa·s） over the 1690 to 1980 K temperature range

关键词： levitation liquid noncontact terbium rare earths

子宫内膜异位症经阴道超声粘连评分系统的研究进展

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中华超声影像学杂志 2024年第5期33卷 441-445页

作者：朱熠罗欣怡蒋卓霖李晏杰石川光也四川省肿瘤临床医学研究中心四川省肿瘤医院·研究所四川省癌症防治中心电子科技大学附属肿瘤医院超声医学中心成都610041 日本国立癌症中心中央病院妇科东京104-0045

子宫内膜异位症性粘连是一种致使女性遭受腹痛、性交痛和不孕等病症的病理状态,严重影响女性的生活品质。为此,精准地诊断其发病部位及播散程度,为患者提供有针对性的治疗方案显得尤为重要。然而,过去缺乏一种简便有效的手段以全面评估... 详细信息

子宫内膜异位症性粘连是一种致使女性遭受腹痛、性交痛和不孕等病症的病理状态,严重影响女性的生活品质。为此,精准地诊断其发病部位及播散程度,为患者提供有针对性的治疗方案显得尤为重要。然而,过去缺乏一种简便有效的手段以全面评估子宫内膜异位症性粘连。最近,日本医学专家们开发了一套经阴道超声粘连评分系统,旨在对子宫内膜异位症性粘连进行术前诊断和治疗监测。笔者将详细介绍这一评分系统及其优势和应用前景,以便为广大医学界同仁提供参考。

关键词：子宫内膜异位症经阴道超声粘连评分术前诊断道格拉斯窝闭塞

强震损伤格栅墙处理地基抗液化性能离心模型试验研究

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岩土工程学报 2024年第S1期46卷 11-15页

作者：周燕国曹渊石川明陈云敏浙江大学软弱土与环境土工教育部重点实验室浙江大学岩土工程研究所浙江大学超重力研究中心浙江杭州310058 清水建设技术研究所日本东京135-8530

水泥土格栅墙能有效减缓被围束土体在地震作用下的剪切荷载及变形,已广泛应用为一种高效的抗液化对策。针对其长期服役过程,开展了两组超重力离心模型试验以研究强振历史对水泥土格栅墙内被围束土体液化响应的影响。两组模型均由15 m厚... 详细信息

水泥土格栅墙能有效减缓被围束土体在地震作用下的剪切荷载及变形,已广泛应用为一种高效的抗液化对策。针对其长期服役过程,开展了两组超重力离心模型试验以研究强振历史对水泥土格栅墙内被围束土体液化响应的影响。两组模型均由15 m厚的易液化含黏粒砂土和2.5 m厚的粗砂层组成。其中,一组模型采用水泥土格栅墙对易液化层进行加固;另一组模型则未进行处理,作为自由场地对照组。两组模型均经历振幅为0.15g的振动事件,且在0.15g振动事件前,对两组模型施加振幅为0.4g的振动事件作为强振历史。试验结果表明,格栅墙在强振下主要的损伤模式表现为竖向贯穿型裂缝,并部分伴随有局部斜向裂缝,且外侧格室对于中心格室表现出类似于群桩基础的“遮蔽效应”。强振历史后,格栅墙中心格室内被围束土体的超静孔压显著低于自由场地,损伤后格栅墙仍具有良好的抗液化效果。同时,格栅墙由于强振后整体刚度的削弱,其与下卧粗砂层间的剪切变形显著减小。

关键词：地震液化水泥土格栅墙地基处理离心机模型试验地震历史