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Impact of device resistances in the performance of graphene‑based terahertz photodetectors

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Frontiers of Optoelectronics 2024年第2期17卷 87-97页

作者： O.Castelló Sofía M.López Baptista K.watanabe T.Taniguchi E.Diez j.E.Velázquez-Pérez Y.M.Meziani j.M.Caridad j.A.Delgado-Notario Department of Applied Physics University of Salamanca37008 SalamancaSpain Unidad de Excelencia en Luz y Materia Estructurada(LUMES) University of Salamanca37008 SalamancaSpain Research Center for Electronic and Optical Materials National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Research Center for Materials Nanoarchitectonics National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Nanotechnology Group USAL-NanolabUniversity of Salamanca37008 SalamancaSpain

In recent years,graphene field-effect-transistors(GFETs)have demonstrated an outstanding potential for terahertz(THz)photodetection due to their fast response and *** features are essential to enable emerging THz applications,including 6G wireless communications,quantum information,bioimaging and ***,the overall performance of these photodetectors may be utterly compromised by the impact of internal resistances presented in the device,so-called access or parasitic *** this work,we provide a detailed study of the influence of internal device resistances in the photoresponse of high-mobility dual-gate GFET *** dual-gate architectures allow us to fine tune(decrease)the internal resistance of the device by an order of magnitude and consequently demonstrate an improved responsivity and noise-equivalent-power values of the photodetector,*** results can be well understood by a series resistance model,as shown by the excellent agreement found between the experimental data and theoretical *** findings are therefore relevant to understand and improve the overall performance of existing high-mobility graphene photodetectors.

关键词： Graphene THz Photodetector Field-effect transistor Plasmonic

乳腺MRI的背景强化程度是否影响乳腺癌的检测和分期?

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国际医学放射学杂志 2012年第1期 90-91页

作者： T.Uematsu M.Kasami j.watanabe 于寰 Breast Imaging and Breast Intervention Section Shizuoka Cancer Center HospitalNaga-izumiShizuoka 411-8777Japan

目的评估MRI作为乳腺X线或超声的辅助手段时背景强化对乳腺癌检测和分期的影响。方法对146例双侧乳腺MRI检查进行分析,以评估已知原发肿瘤的范围以及对乳腺X线或超声检查的疑问做进一步研究,病人的月经

关键词：乳腺 MRI 背景强化局部分期 BI-RADS

Aging-induced memory loss due to decreased N1-acetyl-5-methoxykynuramine,a melatonin metabolite,in the hippocampus:a potential prophylactic agent for dementia

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Neural Regeneration Research 2025年第6期20卷 1705-1706页

作者： Kazuki watanabe Atsuhiko Hattori Department of Immunobiology Institute of Development Aging and CancerTohoku UniversitySendaiMiyagiJapan Department of Sport and Wellness College of Sport and WellnessRikkyo UniversityNiizaSaitamaJapan

Melatonin(N-acetyl-5-methoxytryptamine)is known as the hormone of darkness because it is synthesized at night and involved in regulating the circadian *** hormone is primarily synthesized by the vertebrate pineal gland,but is ubiquitous among invertebrates,unicellular organisms,plants,and even cyanobacteria(Hattori and Suzuki,2024).Melatonin is well-conserved evolutionarily and possesses several physiological functions,such as immune response,bone and glucose metabolism,and memory formation besides regulating the circadian rhythm.

关键词： metabolism primarily agent

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实时虚拟超声检查与活检在由单独MRI检出的乳腺可疑病变中的应用

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国际医学放射学杂志 2016年第3期 334-334页

作者： T.Uematsu K.Takahashi S.Nishimura j.watanabe S.Yamasaki T.Sugino 唐皓 Breast Imaging and Breast Intervention Section Department of Clinical PhysiologyShizuoka Cancer Center Hospital

摘要目的本研究旨在评估在单独MRI乳腺检查检出的可疑病灶中,以实时虚拟超声检查进行二次超声检查和活检是否具有优势。方法回顾性分析70例(78个病灶)经单独MRI检查诊断乳腺疾病的病人。对所有可疑的强化病灶进行二次超声检查;对二次超... 详细信息

摘要目的本研究旨在评估在单独MRI乳腺检查检出的可疑病灶中,以实时虚拟超声检查进行二次超声检查和活检是否具有优势。方法回顾性分析70例(78个病灶)经单独MRI检查诊断乳腺疾病的病人。对所有可疑的强化病灶进行二次超声检查;对二次超声检查中未观察到的病灶进行实时虚拟超声检查。对病灶进行经皮穿刺活检或切除以取得

关键词：超声检查病灶 MRI 检出乳腺乳房

Landscape gradient of autumn photosynthetic decline in Abies sachalinensis seedlings

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journal of Forestry Research 2023年第1期34卷 187-195页

作者： Tetsuto Sugai Wataru Ishizuka Toshihiro watanabe Hokkaido Research Center Forestry and Forest Products Research InstituteHitsujigaoka 7Sapporo 062-8516Japan Plant Nutrition Laboratory Research Faculty of AgricultureHokkaido UniversitySapporo 060-8689Japan Forest Research Institute Hokkaido Research OrganizationBibaiHokkaido 079-0198Japan

Understanding what environmental factors are genetically linked to a phenologic al event is critical for predicting responses to climate *** synthetic phenology often varies among a species of evergreen conifers due to local ***,few empirical studies have revealed relevant relationships between climatic factors in provenance environments and photosynthetic *** study evaluated the effects of environmental conditions of the growing site and seed source provenance on the seasonal changes in maximal photochemical quantum yield of photo systemⅡ(Fv/Fm)in a common garden experiment with 2-year-old seedlings of Sakhalin fir(Abies sachalinensis),a representative species with local adaptation,from four seed source provenances.A logistic model was constructed to explain the seasonal variation of Fv/Fmfrom july to October and the relationships between the estimated model parameters and representative factors featuring provenance environments were *** landscape gradient of the detected model parameters responsible for the provenance environments was visualized in a map of the distribution *** lowest temperature was the most plausible factor in the growing environment to explain the seasonal changes of Fv/*** the representative meteorological factors of provenance environments,the lowest temperatures in july showed significant relationships with two model parameters,explaining the lower limit of Fv/Fmand the higher sensitivity of autumn Fv/*** estimated spatial maps of model parameters consistently showed that the higher the lowest temperature in july in the provenance environment,the lower the Fv/Fmin October and the greater the decrease in the autumn Fv/***,the lowest summer temperature could be associated with the local adaptation of autumn photosynthetic phenology in ***.

关键词： Phenology Local adaptation Genetic cline Lowest temperature

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Implementing the GEOSS water strategy: from observations to decisions

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International journal of Digital Earth 2023年第1期16卷 1439-1468页

作者： Richard Lawford Sushel Unninayar George j.Huffman Wolfgang Grabs Angélica Gutiérrez Chu Ishida-watanabe Toshio Koike Morgan State University BaltimoreUSA NASA Goddard Space Flight Center GreenbeltUSA International Water Affairs Federal Institute of HydrologyKoblenz National Oceanic and Atmospheric Administration Silver SpringUSA japan Aerospace Exploration Agency Tsukuba International Centre for Water Hazard and Risk Management Tsukuba

In 2014,The GEOSS Water Strategy–From Observations to Decisions was published and steps were taken to implement the Strategy’s *** Strategy highlighted priority areas where the application of Earth observations to water research and water management decisions would have significant scientific and societal *** article reviews the implementation of the Strategy’s recommendations over the past eight *** a review of the Strategy’s assessment of the needs for water observations and their applications,it then reviews actions taken in response to the Strategy’s recommendations in its four major themes:improved data acquisition for Essential Water Variables,research and product development,interoperability,and capacity *** highlights significant achievements in the implementation of the Strategy including some motivated by factors beyond this Strategy,reviews actions taken by participating agencies and programs for each of the main themes and summarizes the remaining challenges in achieving the Strategy’s full *** article not only is an update for the Water Community regarding the GEOSS Water Strategy,but it is also an example of how other communities could develop and promulgate a set of strategic recommendations,monitor progress,and carry out assessments of their effectiveness.

关键词： Earth observations water essential water variables research interoperability capacity development

Circuits and devices for standalone large-scale integration (LSI) chips and Internet of Things (IoT) applications: a review

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Chip 2023年第3期2卷 7-19页

作者： Takaya Sugiura Kenta Yamamura Yuta watanabe Shiun Yamakiri Nobuhiko Nakano Department of Electronics and Electrical Engineering Keio UniversityYoko-hamaKanawaga223-8522Japan

In recent years,Internet of Things(IoT)has become more and more important owing to the rapid expansion of the number of computing devices and data *** evolution of IoT requires low-power and self-operating devices to expand the coverage area of computing *** main components of IoT are the large-scale integration(LSI)chips,which take the function of implementing the energy har-vesters,control units and *** exhibit different physics or phenomena,making it difficult to understand and design the entire *** current work reviews the various methods for IoT appli-cations by CMOS LSI chips,from the power components by energy harvesting to realistic applications with future outlooks.

关键词： Analog LSI Energy har vesting Inter net of Things Sensors

REPRESENTATION OF PLASTICITY AT AN INTERFACE CRACK BY INCLINED STRIP YIELD SUPERDISLOCATION MODEL

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Acta Mechanica Solida Sinica 1994年第3期7卷 265-273页

作者： X.j.FAN K.watanabe Institute of Applied Mechanics.Taiyuan University of Technology Taiyuan 030024ShanxiP.R.China Institute of Industrial Science University of TokyoRoppongi 7-22-1Tokyo 106Japan

The basic equations of the representation of plasticity at an interface crack by an inclined strip yield superdislocation model are derived. With a special combination of the material properties and small-scale yielding case, the problem is reduced to an algebraic equation in an unknown, the ratio of the plastic zone size. Some discussions on the limitations of this model are presented.

关键词： Algebra Cracks Dislocations (crystals) Friction Interfaces (materials) Mathematical models Strain Vectors

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Isolation and characterization ofβ-transducin repeat-containing protein ligands screened using a high-throughput screening system

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Oncology Research 2023年第5期31卷 645-654页

作者： XINTONG LIU EMIKO SANADA jIANG LI XIAOMENG LI HIROYUKI OSADA NOBUMOTO watanabe Chemical Resource Development Research Unit RIKEN CSRSWakoSaitama351-0198Japan Department of RIKEN Molecular and Chemical Somatology Graduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityBunkyokuTokyo113-8510Japan Bioprobe Application Research Unit RIKEN CSRSWakoSaitama351-0198Japan Chemical Biology Research Group RIKEN CSRSWakoSaitama351-0198Japan Guangdong Engineering Research Center of Oral Restoration and Reconstruction Affiliated Stomatology Hospital of Guangzhou Medical UniversityGuangzhou510180China KingMed School of Laboratory Medicine Guangzhou Medical UniversityGuangzhou510182China Department of Pharmaceutical Sciences University of ShizuokaSuruga-kuShizuoka422-8526Japan

β-transducin repeat-containing protein(β-TrCP)is an F-box protein subunit of the E3 Skp1-Cullin-F box(SCF)type ubiquitin-ligase complex,and provides the substrate specificity for the *** find potent ligands ofβ-TrCP useful for the proteolysis targeting chimera(PROTAC)system usingβ-TrCP in the future,we developed a high-throughput screening system for small moleculeβ-TrCP *** screened the chemical library utilizing the system and obtained several hit *** effects of the hit compounds on in vitro ubiquitination activity of SCFβ-TrCP1 and on downstream signaling pathways were *** compounds NPD5943,NPL62020-01,and NPL42040-01 inhibited the TNFα-induced degradation of IκBαand its phosphorylated ***,they inhibited the activation of the transcription activity of NF-κB,indicating the effective inhibition ofβ-TrCP by the hit compounds in ***,we performed an in silico analysis of the hit compounds to determine the important moieties of the hit *** groups of NPL62020-01 and NPL42040-01 and hydroxyl groups of NPD5943 created hydrogen bonds withβ-TrCP similar to those created by intrinsic target phosphopeptides ofβ-*** findings enhance our knowledge of useful small molecule ligands ofβ-TrCP and the importance of residues that can be ligands ofβ-TrCP.

关键词： Ubiquitin F-box protein Chemical biology