检索结果-南通市图书馆

Journal of Semiconductors 2016年第2期37卷 10-13页

作者： Shoichiro Nakao Yasushi Hirose tetsuya hasegawa Kanagawa Academy of Science and Technology(KAST) Kawasaki 213-0012Japan Japan Science and Technology Agency CRESTBunkyoTokyo 113-0033Japan Department of Chemistry The University of TokyoBunkyoTokyo 113-0033Japan

We studied the effects of reductive annealing on insulating polycrystalline thin films of anatase Nb- doped TiO2 （TNO）. The insulating TNO films were intentionally fabricated by annealing conductive TNO films in oxygen ambient at 400 ℃. Reduced free carrier absorption in the insulating TNO films indicated carrier com- pensation due to excess oxygen. With H2-annealing, both carrier density and Hall mobility recovered to the level of conducting TNO, demonstrating that the excess oxygen can be efficiently removed by the annealing process without introducing additional scattering centers.

关键词： transparent conductive oxide Nb-doped TiOa pulsed laser deposition

Prophylactic Pattern Scanning Laser Retinal Photocoagulation for Diabetic Retinopathy in Spontaneously Diabetic Torii Fatty Rats: Preliminary Experimental Results

在线全文

学校读者我要写书评

暂无评论

Journal of Diabetes Mellitus 2024年第3期14卷 153-165页

作者： Rina Takagi Yoshiaki Tanaka tetsuya hasegawa Masami Shinohara Yasushi Kageyama Tomohiko Sasase Machiko Shimmura-Tomita Akihiro Kakehashi Toshikatsu Kaburaki Department of Ophthalmology Saitama Medical Center Jichi Medical University Saitama-shi Saitama-ken Japan Tokyo Animal & Diet Department CLEA Japan Inc. Tokyo Japan Biological/Pharmacological Research Laboratories Central Pharmaceutical Research Institute Japan Tobacco Inc. Takatsuki Osaka Japan

Research Background and Purpose: The number of diabetic patients is rapidly increasing, making it crucial to find methods to prevent diabetic retinopathy (DR), a leading cause of blindness. We investigated the effects of prophylactic pattern scanning laser retinal photocoagulation on DR development in Spontaneously Diabetic Torii (SDT) fatty rats as a new prevention approach. Methods: Photocoagulation was applied to the right eyes of 8-week-old Spontaneously Diabetic Torii (SDT) fatty rats, with the left eyes serving as untreated controls. Electroretinography at 9 and 39 weeks of age and pathological examinations, including immunohistochemistry for vascular endothelial growth factor and glial fibrillary acidic protein at 24 and 40 weeks of age, were performed on both eyes. Results: There were no significant differences in amplitude and prolongation of the OP waves between the right and left eyes in SDT fatty rats at 39 weeks of age. Similarly, no significant differences in pathology and immunohistochemistry were observed between the right and left eyes in SDT fatty rats at 24 and 40 weeks of age. Conclusion: Prophylactic pattern scanning retinal laser photocoagulation did not affect the development of diabetic retinopathy in SDT fatty rats.

关键词： Diabetes Pattern Scanning Laser Diabetic Retinopathy Spontaneously Diabetic Torii Fatty Rats Electroretinography

Complex-Valued Neural Networks:A Comprehensive Survey

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1406-1426页

作者： ChiYan Lee Hideyuki hasegawa Shangce Gao Faculty of Engineering University of ToyamaToyama 930-8555Japan

Complex-valued neural networks(CVNNs)have shown their excellent efficiency compared to their real counterparts in speech enhancement,image and signal *** throughout the years have made many efforts to improve the learning algorithms and activation functions of *** CVNNs have proven to have better performance in handling the naturally complex-valued data and signals,this area of study will grow and expect the arrival of some effective improvements in the ***,there exists an obvious reason to provide a comprehensive survey paper that systematically collects and categorizes the advancement of *** this paper,we discuss and summarize the recent advances based on their learning algorithms,activation functions,which is the most challenging part of building a CVNN,and ***,we outline the structure and applications of complex-valued convolutional,residual and recurrent neural ***,we also present some challenges and future research directions to facilitate the exploration of the ability of CVNNs.

关键词： Complex activation function complex backpropagation algorithm complex-valued learning algorithm complex-valued neural network deep learning

Reproducibility and Validity of a Chinese Food Frequency Questionnaire

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2010年第S1期23卷 1-38页

作者： Water WILLETT Kyoko hasegawa Department of Nutrition Harvard School of Public Health Kagawa Nutrition University

Objectives This study was design to develop a semi-quantitative Chinese Food Frequency Questionnaire （FFQ） and to conduct a validation study for the questionnaire. Methods Based on the survey experience in recent years, a new Chinese food frequency questionnaire （FFQ） with 149 items in 17 food categories was developed. A validation study on this new FFQ was conducted in Jiangsu and Beijing of China between 1999 and 2001. The period of study covered 1 year and the FFQ was validated by comparing with data obtained by a six repeated 24-hour recalls for 3 consecutive days, or a totally 18-day 24- hour recall throughout the year. A total of 271 healthy adult subjects were enrolled in the study. Food and nutrient intakes measured by the 18-day dietary recalls and food frequency questionnaires （FFQs） were computed in the National Institute for Nutrition and Food Safety, China CDC using the existing nutrition database. The average daily intake of foods and nutrients over the 18-day recall was used to compare with FFQ1 and FFQ2, which was conducted at the beginning and the end of the year, respectively. All statistical analyses were carried out using SAS software version 6.12.

关键词： FFQ Reproducibility and Validity of a Chinese Food Frequency Questionnaire

A technique utilizing chemical reagents for direct measurement of temperature at a local area and its engineering applications

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2009年第2期25卷 149-160页

作者： M.Saka T.hasegawa Department of Nanomechanics Tohoku University

Temperature is one of the physical quantifies through which quantitative evaluation of the safety and reliability of industrial products can be achieved, and this has been used widely in practice. Under any environmental condifion, regardless of the size of the object to be inspected, accurate and reliable measurement of temperature is of great practical importance. This review article presents a simple and direct method of temperature measurement, that can be applied to the local areas with difficulty in measuring the temperature by using normal thermometers. In the present article, two different application examples are demonstrated. One addresses the study of the electromigration of solders which are used as bonding metals in electronic devices （micro-structures）. The application of the method to the shaft of a motor used in heavy industrial fields is explained as the second.

关键词： Temperature measurement Chemicalreagents Melting point Temperature distribution

NUMERICAL SIMULATION ON COMPRESSIBLE TURBULENCE BY SPECTRAL METHOD

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 1998年第3期14卷 193-207页

作者：王健平 Tatsuya hasegawa State Key Laboratory for Turbulence Research Department of Mechanics and Engineering SciencePeking UniversityBeijing 100871China Department of Mechanical Engineering Nagoya Institute of TechnologyGokiso-choShowa-kuNagoya 466Japan

The numerical and physical issues of simulations on compressible turbulence are reviewed in the present paper. An outline of the global spectral methods and the progress of recent local spectral methods are illustrated. Several typical subjects in this field are studied, including homogeneous isotropic turbulence, autoignition in premixed turbulence, interaction between flames and turbulence, and shock wave in turbulence. The results of the numerical simulations are discussed, enabling us to discover and to understand the physical phenomena which have not been solved by experiments.

关键词： compressible turbulence turbulent flame spectral method

Effect of additional element and heat treating temperature on micro-structure and mechanical behavior of Ag alloy thin film

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2006年第B1期16卷 217-219页

作者： ISHIGURO S A RIZONO T hasegawa K Department of Material Science and Engineering Saitama Institute of TechnologyFusaiji 1690OkabeSaitamaJapan 369-0293 Ishifuku Metal Industry Co Ltd Kana 3-20-7Chiyoda-kuTokyoJapan

For Ag alloy film used for the storage media, it is required to have heat-resistance, anti-constant temperature and anti-constant humidity characteristics, corrosion resistance, while high reflectivity over Al is maintained. An Ag alloy thin film (additive element Pd, Cu, P) was created on glass substrates, and various heat treatment was conducted. Then, fine structure was observed on this thin film using AFM, and fine structure evaluation of the inside was carried out by the in-plane diffractometry and X-ray diffractometry, and in addition, residual stress analysis was carried out. These results were compared and were examined, and fine structure and physical property in a metallic thin film were evaluated, and usefulness of evaluation method was verified.

关键词：银合金薄膜添加元素热处理温度显微结构力学行为

Behavioral Model of Molecular Gap-Type Atomic Switches and Its SPICE Integration

在线全文

学校读者我要写书评

暂无评论

Circuits and Systems 2022年第1期13卷 1-12页

作者： Hiroshi Kubota Tsuyoshi hasegawa Megumi Akai-Kasaya tetsuya Asai Graduate School of Information Science and Technology Hokkaido University Sapporo Japan School of Advanced Science and Engineering Waseda University Tokyo Japan

Atomic switches can be used in future nanodevices and to realize conceptually novel electronics in new types of computer architecture because of their simple structure, ease of operation, stability, and reliability. The atomic switch is a single solid-state switch with inherent learning abilities that exhibits various nonlinear behaviors with network devices. However, previous studies focused on experiments and nonvolatile memory applications, and studies on the application of the physical properties of the atomic switch in computing were nonexistent. Therefore, we present a simple behavioral model of a molecular gap-type atomic switch that can be included in a simulator. The model was described by three simple equations that reproduced the bistability using a double-well potential and was able to easily be transferred to a simulator using arbitrary numerical values and be integrated into HSPICE. Simulations using the experimental parameters of the proposed atomic switch agreed with the experimental results. This model will allow circuit designers to explore new architectures, contributing to the development of new computing methods.

关键词： Memristor Atomic Switch Behavioral Model SPICE

Prevalence and characteristics of Kawasaki disease before and during the COVID-19 pandemic

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2021年第2期17卷 215-217页

作者： Rintaro Ono Daisuke hasegawa Department of Pediatrics St.Luke's International Hospital9-1 AkashichoChuo-kuTokyo 104-8560Japan

Kawasaki disease(KD)is a febrile disease with unclear *** far,KD has been considered to be trig-gered,at least in part,by an infection[1].In 2020,corona-virus disease 2019(COVID-19)became a global pandemic and lifestyles changed ***,the preva-lence of common infection has decreased *** epidemiological change prompted us to postulate that major variations of common pediatric infections would affect the incidence of KD.

关键词： prompt characteristics Kawasaki

Soft X-ray laser observation of femtosecond-laser-driven ablation of tungsten

维普期刊数据库评论

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 Optics Letters 2015年第7期13卷 2-4页

作者： Masaharu Nishikino Noboru hasegawa Masahiko Ishino Yoshihiro Ochi tetsuya Kawachi Mitsuru Yamagiwa Yoshiaki Kato Quantum Beam Science Directorate Kansai Photon Science Institute Japan Atomic Energy Agency Graduate School for the Creation of New Photonics Industries

Ablation dynamics of tungsten irradiated with a 70 fs laser pulse is investigated with X-ray interferometry and X-ray imaging using a 13.9 nm soft X-ray laser of 7 ps pulse duration. The evolution of high-density ablation front of tungsten （i.e., W） is presented. The ablation front expands to ~120 nm above the original target surface at 160 ps after femtosecond-laser irradiation with an expansion speed of approximately 750 m/s. These results will provide important data for understanding ablation properties of W, which is a candidate material of the first wall of magnetic confinement fusion reactors.

关键词： Soft X-ray laser observation of femtosecond-laser-driven ablation of tungsten high