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日本三陆沿岸白胸拟鼠海豚体内铁的蓄积(英文)

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水产学报 2003年第5期27卷 420-424页

作者：杨健,KUNITO takashi,TANABE Shinsuke,miyazaki Nobuyuki 中国水产科学研究院淡水渔业研究中心日本爱媛大学沿岸环境科学研究中心日本爱媛大学沿岸环境科学研究中心日本东京大学海洋研究所大槌临海研究中心江苏无锡　214081 中国科学院水生生物研究所湖北武汉　430072 松山　790-8566 松山　790-8566 大槌町　028-1102

根据22头日本三陆沿岸白胸拟鼠海豚的检测结果,研究了必需元素铁在13种组织和器官中的蓄积特征。肺、肝脏和脾脏中铁的浓度显著高于其它脏器,铁在皮肤和鲸脂中的浓度却非常低。研究发现,鲸类肝脏中铁的平均浓度与其最大潜水持续时间有... 详细信息

根据22头日本三陆沿岸白胸拟鼠海豚的检测结果,研究了必需元素铁在13种组织和器官中的蓄积特征。肺、肝脏和脾脏中铁的浓度显著高于其它脏器,铁在皮肤和鲸脂中的浓度却非常低。研究发现,鲸类肝脏中铁的平均浓度与其最大潜水持续时间有着极其显著的正相关(y=285.17x0.5267;r2=0.92;y:a肝脏中铁的平均浓度,单位为μg·g-1干重;x:最大潜水持续时间,单位为min)。利用该关系式,首次推测白胸拟鼠海豚的最大潜水持续时间为11.85min。

关键词：白胸拟鼠海豚铁蓄积

Synthesis of CaO-SiO<sub>2</sub>Compounds Using Materials Extracted from Industrial Wastes

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Open Journal of Inorganic Non 2015年第1期5卷 1-10页

作者： Nobuaki Yamaguchi Yoshiko Masuda Yoshishige Yamada Hideaki Narusawa Cho Han-Cheol Yukimichi Tamaki takashi miyazaki Department of Conservative Dentistry Division of Biomaterials & Engineering Showa University School of Dentistry Tokyo Japan Department of Conservative Dentistry Division of Endodontology Showa University School of Dentistry Tokyo Japan Department of Dental Materials Science Asahi University School of Dentistry Gifu Japan

Mineral trioxide aggregate (MTA) cement is an attractive material in endodontic dentistry. The purpose of this study was to produce calcium silicate, which is a major component of MTA, from waste materials. A dental alginate impression gel and used chalks were selected and mixed in a suitable ratio (Code: EXP). As a control, CaCO3 and a commercial diatomite were used (Code: CON). Each powder was heated to 850。C and 1000。C, and then kneaded with water. TG-DTA, compressive tests, SEM observations, elemental mapping analyses, and XRD analyses were performed. TG-DTA indicated that weight reduction of CaCO3 started at 600。C, and it completely decomposed on heating at 850。C. The strength was affected by the temperature. After heating, CaCO3 was transformed into CaO and/or Ca2SiO4, and Ca(OH)2 was formed by mixing with water. There were no differences between EXP and CON. These data suggested that recycled wastes might be promising MTA sources.

关键词： Recycling Calcium Silicate Diatomite Alginate Impression Material Calcium Hydroxide

Importance of early detection of esophageal cancer before the tumor progresses too much for effective treatment

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3382-3385页

作者： takashi Ono Radiation Oncology Faculty of MedicineYamagata UniversityYamagata 990-9585Japan

This editorial comments on an article by Qu et al published in the World Journal of Gastrointestinal *** focuses on the importance of early detection of esophageal cancer,including recurrence or secondary malignancy after chemoradiotherapy(CRT).Endoscopic resection is the first choice for treatment for esophageal cancer remaining within the mucous membrane,while surgery or radical CRT are treatment options for advanced stages depending on the patient’s general condition and *** these treatments are potentially curative,they are more invasive than endoscopic ***-stage esophageal cancer is often asymptomatic and difficult to *** periodic endoscopy is *** less burdensome tests exist,including liquid biopsy and urinary biomarkers,these have not yet been widely used in clinical *** detection is important after radical CRT because the local recurrence rate is higher than that after ***,endoscopic resection or photodynamic therapy is indicated if detected in the early stages,and positive results have been *** detection of esophageal cancer is *** is the main diagnostic method;however,new and less burdensome methods should be established to ensure early treatment for patients with esophageal cancer.

关键词： Esophageal neoplasms Screening Endoscopy Prognosis Endoscopic mucosal resection Endoscopic submucosal dissection Photodynamic therapy

Electroluminescence from pure resonant states in hBN-based vertical tunneling junctions

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Light(Science & Applications) 2024年第8期13卷 1557-1564页

作者： Magdalena Grzeszczyk Kristina Vaklinova Kenji Watanabe takashi Taniguchi Konstantin SNovoselov Maciej Koperski Institute for Functional Intelligent Materials National University of SingaporeSingapore 117544Singapore Research Center for Functional Materials National Institute for Materials ScienceTsukuba 305-0044Japan International Center for Materials Nanoarchitectonics National Institute for Materials ScienceTsukuba 305-0044Japan Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore

Defect centers in wide-band-gap crystals have garnered interest for their potential in applications among optoelectronic and sensor ***,defects embedded in highly insulating crystals,like diamond,silicon carbide,or aluminum oxide,have been notoriously difficult to excite electrically due to their large internal *** address this challenge,we realized a new paradigm of exciting defects in vertical tunneling junctions based on carbon centers in hexagonal boron nitride(hBN).The rational design of the devices via van der Waals technology enabled us to raise and control optical processes related to defect-to-band and intradefect *** fundamental understanding of the tunneling events was based on the transfer of the electronic wave function amplitude between resonant defect states in hBN to the metallic state in graphene,which leads to dramatic changes in the characteristics of electrons due to different band structures of constituent *** our devices,the decay of electrons via tunneling pathways competed with radiative recombination,resulting in an unprecedented degree of tuneability of carrier dynamics due to the significant sensitivity of the characteristic tunneling times on the thickness and structure of the *** enabled us to achieve a high-efficiency electrical excitation of intradefect transitions,exceeding by several orders of magnitude the efficiency of optical excitation in the sub-band-gap *** work represents a significant advancement towards a universal and scalable platform for electrically driven devices utilizing defect centers in wide-band-gap crystals with properties modulated via activation of different tunneling mechanisms at a level of device engineering.

关键词： carbide tunneling defect

Geomorphological evidence inconvenient for the antecedent rivers of the Arun and Tista across the Himalayan range

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Journal of Mountain Science 2024年第9期21卷 3001-3017页

作者： NAKATA takashi KUMAHARA Yasuhiro NAIK Sambit Prasanajit SAKAI Harutaka Graduate School of Humanities and Social Sciences Hiroshima UniversityHigashi-Hiroshima 739-8522Japan Active Fault and Earthquake Hazard Mitigation Research Center Pukyong National UniversityBusan 48513South Korea Department of Petroleum Engineering and Earth Sciences University of Petroleum and Energy StudiesDehradun 248007India Graduate School of Science Kyoto UniversityKyoto 606-8502Japan

The Arun and Tista Rivers,which flow across the Himalayas,are commonly known as antecedent valleys that overcame the rapid uplift of the Higher Himalayan *** clarify whether the idea of antecedent rivers is acceptable,we investigated the geomorphology of the Himalayas between eastern Nepal and Bhutan *** southern part of Tibetan Plateau,extending across the Himalayas as tectonically un-deformed glaciated terrain named as'Tibetan Corridor,'does not suggest the regional uplift of the Higher *** 8,000-m class mountains of Everest,Makalu,and Kanchenjunga are isolated residual peaks on the glaciated terrain composed of mountain peaks of 4,000–6,000 m *** Tibetan glaciers commonly beheaded by Himalayan glaciers along the great watershed of the Himalayas suggest the expansion of Himalayan river drainage by *** the narrow upstream regions of the Arun and Tista Rivers with less precipitation behind the range,it is hard to collect enough water for the power of down-cutting their channels against the uplifting *** fission track ages of the Higher Himalayan Crystalline Nappe suggest that the Himalayas attained their present altitude by 11–10 Ma,and the Arun and Tista Rivers formed deep gorges across the Himalayas by headward erosion.

关键词： Himalaya Antecedent river Geomorphology AW3D30 DSM Glacier piracy

Field induced Chern insulating states in twisted monolayer–bilayer graphene

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Chinese Physics B 2024年第6期33卷 69-73页

作者：王政文韩英卓 Kenji Watanabe takashi Taniguchi 姜宇航毛金海 School of Physical Science and CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100049China College of Materials Science and Optoelectronic Technology Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Advanced Materials Laboratory National Institute for Materials ScienceTsukuba 305-0044Japan

Unraveling the mechanism underlying topological phases, notably the Chern insulators(Ch Is) in strong correlated systems at the microscopy scale, has captivated significant research interest. Nonetheless, Ch Is harboring topological information have not always manifested themselves, owing to the constraints imposed by displacement fields in certain experimental configurations. In this study, we employ density-tuned scanning tunneling microscopy(DT-STM) to investigate the Ch Is in twisted monolayer–bilayer graphene(t MBG). At zero magnetic field, we observe correlated metallic *** under a magnetic field, a metal–insulator transition happens and an integer Ch I is formed emanating from the filling index s = 3 with a Chern number C = 1. Our results underscore the pivotal role of magnetic fields as a powerful probe for elucidating topological phases in twisted Van der Waals heterostructures.

关键词： Chern insulators strong correlation effects two-dimensional van der Waals heterostructure density-tuned scanning tunneling microscopy(DT-STM)

Experimental Investigation of Thermal Performance of Novel Finned Radiators for Automotive Cooling System

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Journal of Thermal Science 2024年第5期33卷 1726-1743页

作者： SINGH Hardeep TING David S-K READER Graham ESHTIAGHI Nicky ICHIYANAGI Mitsuhisa SUZUKI takashi Turbulence&Energy Laboratory University of WindsorWindsor N9B 3P4Canada Chemical and Environmental Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3001Australia Department of Engineering and Applied Sciences Sophia UniversityTokyo 102-8554Japan

This research investigates innovative fin-type radiators for automobile engine cooling ***-channel and helical radiators,along with straight type,were analyzed for heat transfer characteristics under various *** uniqueness of this study is evident in the design of microchannel and helical *** helical radiators,the inner rod features 4/8 helical-shaped water galleries,while the outer tube frame with embedded fins remains *** contrast,the microchannel radiators have compact trapezoidal-shaped water galleries with separate fin ***,the novelty of the research is enhanced by the utilization of 3D printing technology in the manufacturing *** constant fin height analysis at varied water and air flow rate,Microchannel Water Air Radiator with fin height 10.5 mm(MCWAR10.5)depicted a higher heat transfer rate amongst the *** comparison to Straight Water Air Radiator with fin height 9.5 mm(SWAR9.5),the heat transfer rate is 30.3%and 1.3 times ***,in constant fin surface area analysis,microchannel radiator(MCWAR3.2)illustrates lower heat dissipation than Helical radiator(HWAR138)but higher than HWAR134 and Straight radiator(SWAR6).The examination of pumping loss indicated that the Micro-channel radiator outperformed helical radiators due to its lower pressure *** average pressure loss for Micro-channel radiators was 0.74 kPa,making it 1.2 times higher than that of a straight radiator(0.62 kPa),indicating a better trade-off.

关键词： heat exchangers multi-channel helical heat exchanger heat transfer 3D printing

In vivo direct neuronal conversion as a therapeutic strategy for ischemic stroke

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Neural Regeneration Research 2025年第8期20卷 2309-2310页

作者： takashi Irie Taito Matsuda Department of Stem Cell Biology and Medicine Graduate School of Medical SciencesKyushu UniversityFukuokaJapan Department of Neurology Neurological InstituteGraduate School of Medical SciencesKyushu UniversityFukuokaJapan

Stroke causes neuronal loss,which ultimately results in persistent neurological ***,stroke was the third-leading cause of death and disability combined in all ages in 2019,after neonatal disorders and ischemic heart *** that year,there were 12.2 million incident strokes,101 million prevalent strokes,and 143 million disability-adjusted life-years due to stroke.

关键词： neonatal death therapeutic

Experimental study on the effect of micro-carbon additives in vegetable oils for aquifer thermal energy storage

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Clean Energy 2024年第2期8卷 48-59页

作者： takashi Suzuki Mitsuhisa Ichiyanagi Emir Yilmaz Archie G.K.Maxwell Ekadewi Anggraini Handoyo Department of Engineering and Applied Sciences Sophia University7-1Kioi-choChiyoda-kuTokyo102-8554Japan Graduate School of Science and Technology Sophia University7-1Kioi-choChiyoda-kuTokyo102-8554Japan Department of Mechanical Engineering Petra Christian UniversitySiwalankerto 121-131Surabaya 60291Indonesia

Aquifer thermal energy storage is a versatile method for regulating building temperatures,utilizing groundwater as a medium for both summer cooling and winter *** has high thermal conductivity and specific heat but is corrosive,creating a mineral build-up that causes ***,its high freezing point presents operational *** oils emerge as a promising alternative,owing to their lower freezing *** light of environmental concerns,researchers are exploring vegetable oils as substitutes for petroleum-derived mineral *** paper is intended as an initial study using vegetable oils,*** and sunflower oil,as the heat-transfer medium in aquifer thermal energy *** experiments assess the heat-transfer coefficient of coconut,sunflower,mineral,and synthetic oils when exposed to the same heat *** study also evaluates the impact of introducing micro-carbon(graphite and charcoal)to the *** indicate that sunflower oil has the highest heat-transfer coefficient of 374.4 W/m^(2) K among the oils,making it suitable for aquifer thermal energy storage ***,augmenting sunflower oil with charcoal powder enhances its performance by increasing the heat-transfer coefficient to 474.9 W/m^(2) K,or a 27%*** contrast,coconut oil proves unsuitable for aquifer thermal energy storage deployment because of its low heat-transfer coefficient of 293.7 W/m^(2) *** heat-transfer coefficient of synthetic oil increases with graphite powder but decreases with charcoal powder introduction.

关键词： sunflower oil aquifer thermal energy storage charcoal graphite vegetable oil