检索结果-南通市图书馆

Characteristics Improvement of PEDOT:PSS Transparent Conductive Film Prepared by Ink-Jet Printing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Materials Physics and Chemistry 2016年第8期6卷 239-247页

作者： atsushi nitta Kazuya Kawahara Kohei Miyata Department of Electronic Control Engineering National Institute of Technology Kagoshima CollegeKirishima Japan Advanced Mechanical and Electronic Systems Engineering National Institute of Technology Kagoshima College Kirishima Japan

Recently, a high-performance and low-priced transparent conductive film has been expected to be developed because flexible devices produced using organic materials have been actively studied. An indium tin oxide (ITO) thin film, which has been generally used as a material for a transparent conductive film, has problems, such as fragility to bending stress and depletion of the resource. The present study used poly(3, 4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS), an organic electroconductive material, and examined the improvement in the resistance value and visible light transmittance of a transparent conductive film produced using the ink-jet method. In previous studies, we reported that, to improve the resistance value and visible light transmittance of a thin film, it was effective to clean the film substrate with ultraviolet/ozone (UV/O3) treatment, anneal the film after it was deposited on the substance, and dip the annealed film into a polar solvent. Focusing on the thin film processing between printing operations, the present study improved resistance value and visible light transmittance by examining both the application methods of a polar solvent and the annealing time between printing operations. As a result, the resistance value and visible light transmittance of a PEDOT:PSS thin film were 390.4 Ω and 86.6%, respectively. This film was obtained by applying a polar solvent and performing annealing for 30 min between printing operations. The printing was performed three times.

关键词： PEDOT:PSS Ink-Jet Printing Transparent Conductive Film Flexible Devices

The Polar Solvent Application Method for Organic Transparent Conductive Film Produced by an Inkjet Printing Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Materials Physics and Chemistry 2020年第1期10卷 17-25页

作者： atsushi nitta Naohiko Chosa Kazuhiro Takeda Department of Electronic Control Engineering National Institute of Technology Kagoshima College Kirishima Japan Advanced Mechanical and Electronic Systems Engineering National Institute of Technology Kagoshima College Kirishima Japan Department of Information Engineering National Institute of Technology Kagoshima College Kirishima Japan

In recent years, flexible electronic devices have attracted much attention. Accordingly, flexible transparent conductive films are being researched actively. The commonly used indium tin oxide (ITO) transparent conductive film has limited flexibility. Therefore, we focused on poly(3,4-ethylenedioxythio- phene)/poly(styrenesulfonate)(PEDOT:PSS) as a substitute material for ITO and are engaged in producing flexible transparent conductive film using inkjet printers. To improve the characteristics of the transparent conductive film produced by inkjet printing, based on prior research, we found that cleaning the film substrate with ultraviolet/ozone (UV/O3) and post-deposition annealing and treatment using polar solvents are effective for thin films. In this study, we examined the method of applying the polar solvent. As a result, we were able to improve the homogeneity of the thin film surface by applying the polar solvent to each thin film lamination layer. The resulting characteristics obtained for a three-layer printed PEDOT:PSS thin film with polar solvent coating were resistivity of 1.49 × 10-3 Ω·cm and transmittance of 84.6%. However, we found that the surface condition changed depending on the processing method, affecting the rate of visible light transmittance.

关键词： PEDOT:PSS Inkjet Printing Transparent Conductive Film Flexible Devices

Examination of Treatment Methods for a PEDOT:PSS Transparent Conductive Film Produced Using an Inkjet Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Materials Physics and Chemistry 2017年第8期7卷 311-322页

作者： atsushi nitta Yuki Imamura Kazuya Kawahara Kazuhiro Takeda Department of Electronic Control Engineering National Institute of Technology Kagoshima College Kirishima Japan Advanced Mechanical and Electronic Systems Engineering National Institute of Technology Kagoshima College Kirishima Japan Department of Information Engineering National Institute of Technology Kagoshima College Kirishima Japan

Flexible devices manufactured using printed electronics have attracted the attention of many researchers. A high-performance transparent conductive film exhibiting high flexibility and elasticity is expected to be developed because of its need for the creation of flexible devices. An indium tin oxide (ITO) thin film, which has generally been used, has weaknesses such as fragility to bending stress and depletion of the resource. This study focused on poly (3, 4-ethy-lenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS), a conductive polymer material, and examined improvement in the resistivity and transmittance of the transparent conductive film produced using an inkjet method. The present study improved the electrical and optical characteristics of the thin film by examining the annealing temperature between printing operations and the application method of a polar solvent. As a result, the resistivity and transmittance of a PEDOT:PSS thin film were 1.49 × 10-3 Ω·cm and 89.2%, respectively. This film was obtained by annealing at 90°C for 30 min and applying a polar solvent, using an inkjet printer, between printing operations. The printing was performed three times.

关键词： PEDOT:PSS Inkjet Printing Transparent Conductive Film Flexible Devices

To Investigate the Effect of Using Ethanol Containing Wipes in Collecting Blood for the Measurement of Alcohol Concentration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pharmacology & Pharmacy 2021年第10期12卷 208-218页

作者： Takami Nakao atsushi nitta Hiroshi Nishioka Munehiro Katagi Noriko Tsuda Yasuhide Kitazawa Critical Care Medical Center Kindai University Nara Hospital Ikoma City Japan Forensic Science Laboratory Osaka Prefectural Police Quarters Osaka Japan Critical Care Medical Center Kindai University Hospital Osaka-Sayama City Japan

This study was aimed to establish whether the skin preparation using ethanol-containing skin antiseptics causes ethanol contamination through blood collection. Venous blood was collected from 40 healthy volunteers according to the national guidelines for blood sampling, with four sequential procedures as follows: 1) collecting blood immediately (within 5 seconds) after cleaning the skin with an individually packaged type of ethanol-containing wipe, 2) collecting blood 1 minute after cleaning the skin with an individually packaged type of ethanol-containing wipe, 3) collecting immediately (within 5 seconds) after cleaning the skin with a traditional cleaning method (thoroughly ethanol-impregnated wipe, and 4) collecting 1 minute after cleaning the skin with a traditional cleaning method. Each sequential procedure was performed with and without the ethanol-containing wipe used for skin cleaning on the puncture site on their right and left arms at the time the needle was withdrawn, respectively. The collected specimens were subjected to the determination of ethanol by using headspace gas chromatography-mass spectrometry. In every 80 blood specimens obtained from 40 participants, ethanol was undetectable (<0.001 mg/mL). This study demonstrates that disinfection using ethanol-containing skin antiseptics is unlikely to cause ethanol contamination through blood collection regardless of skin preparation technique according to the guidelines for blood sampling. This may have implications in forensic science.

关键词： Blood Alcohol Content Skin Antiseptic Contamination of Ethanol

Time to take another Iook at perceived disadvantages of robotic hepatectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary Surgery and Nutrition 2020年第2期9卷 208-210页

作者： Yasushi Hasegawa Hiroyuki nitta Takeshi Takahara Akira Sasaki Department of Surgery Iwate Medical University School of MedicineMorioka CityIwateJapan

Robotic hepatectomy remains controversial to date,despite continuous advances in the technology and more surgeons gaining experience with the *** et al.(1)recently published an interesting article in Hepatobiliary Surgery and Nutrition,titled"Selecting incision-dominant cases for robotic liver resection:towards outpatient hepatectomy with rapid recovery."The authors evaluated 97 cases of robotically-assisted liver resection(RLR)arguing that it is difficult to reach the superior-posterior liver segments with the straight instruments used in conventional laparoscopic liver resection(LLR).The articulated instruments of the surgical robot are better suited for hepatectomies in these difficult-to-reach areas of the *** concluded that cases where the incision of an open approach would be large and affect recovery results in the highest likelihood of patients benefitting from a robotic *** think that the authors present an interesting perspective by focusing on the strong points of RLR compared to LLR.

关键词： hepatectomy Surgery straight

A case of diffuse alveolar hemorrhage following synthetic cathinone inhalation

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 Emergency Medicine 2020年第3期11卷 182-184页

作者： Masakazu nitta Taro Tamakawa Natsuo Kamimura Tadayuki Honda Hiroshi Endoh Advanced Emergency and Critical Care Center Niigata University Medical and Dental HospitalChuo-kuNiigataJapan

Dear editor,Diffuse alveolar hemorrhage(DAH)sometimes causes a life-threatening condition;thus,prompt diagnosis and treatment for DAH is ***,a variety of diseases(e.g.,systemic autoimmune diseases,infectious diseases,drugs)are associated with the development of DAH,which occasionally causes diffi culty with identifying the specifi c etiology.

关键词： alveolar diseases diagnosis

Phenolic rigid organic filler/isotactic polypropylene ***

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2008年第3期2卷 236-241页

作者： Dongming QI Lei YANG Minghua WU Heming LIN Kohhei nitta Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018China Graduate School of Natural Science&Technology Kanazawa UniversityKanazawaIshikawa920-1192Japan

A novel phenolic rigid organic filler(KT)was melt-mixed with an isotactic polypropylene(iPP)to prepare a series of PP/KT composites,with or without maleic anhydride grafted polypropylene(MAPP)as *** evolution of filler morphology during melt-mixing and melt-pressure processes was monitored by scanning electron microscope(SEM)and polarized optical microscope(POM).The influences of shear force,pressure time,filler content and MAPP concentration on the final filler dispersion were *** found that this rigid organic filler readily melted and dispersed homogenously into the iPP matrix through a fission-fusion process during the melt-mixing *** a balanced dispersion,which was closely related to shear force and MAPP concentration,can be *** the meltpressure process,parts of the filler particles combined gradually through a coalescence ***,the incorporation of MAPP can effectively inhibit the tendency to coalesce and refine the filler particles sizes into ***,a series of PP/KT composites with controllable filler particles size and narrow size distribution can be obtained just by adjusting process conditions and MAPP *** addition,due to the in-situ formation mechanism,the filler phase possessed a typical solid true-spherical shape.

关键词： rigid organic filler polypropylene dispersion in-situ formation

Learning Dynamics of the Complex-Valued Neural Network in the Neighborhood of Singular Points

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Computer and Communications 2014年第1期2卷 27-32页

作者： Tohru nitta National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Japan

In this paper, the singularity and its effect on learning dynamics in the complex-valued neural network are elucidated. It has learned that the linear combination structure in the updating rule of the complex-valued neural network increases the speed of moving away from the singular points, and the complex-valued neural network cannot be easily influenced by the singular points, whereas the learning of the usual real-valued neural network can be attracted in the neighborhood of singular points, which causes a standstill in learning. Simulation results on the learning dynamics of the three-layered real-valued and complex-valued neural networks in the neighborhood of singularities support the analytical results.

关键词： Complex-Valued Neural Network Complex Number Learning Singular Point

Impact of Vitamin D Metabolism on Cardiovascular Disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Clinical Medicine 2011年第5期2卷 531-537页

作者： Kosaku nitta 不详

Vitamin D is a steroid hormone that enables optimal absorption of calcium from the intestine for bone mineralization. Vitamin D receptor is present in many organs, and there has been of interest in potential functions of vitamin D, particularly in cardiovascular disease. Vitamin D deficiency is thought to be associated with an increased risk of cardiovascular disease. The mechanism by which vitamin D might improve the outcome of cardiovascular disease outcomes remains unclear. However, potential hypotheses have been proposed, including that vitamin D improves the outcome by down-regulating the renin-angiotensin-aldosterone system and by direct effects on the heart and vasculature. The estimated worldwide prevalence of vitamin D deficiency of 50% in elderly populations underlines the importance of vitamin D deficiency as a public health issue. The elderly persons have high rates of comorbid conditions, including cardiovascular disease. This article reviews changes in vitamin D level with age, the impact of vitamin D deficiency on agerelated cardiovascular disease, and different treatment options available for vitamin D deficiency in older populations.

关键词： Vitamin D Mortality Cardiovascular Disease Hypertension Therapeutic Option