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270 nm ultra-thin self-adhesive conformable and long-term airstable complimentary organic transistors and amplifiers

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npj Flexible Electronics 2023年第1期7卷 165-176页

作者： mohammad javad mirshojaeian hosseini Yi Yang Walter Kruger Tomoyuki Yokota Sunghoon Lee Takao Someya Robert A.Nawrocki School of Engineering Technology Purdue University401 S Grant StWest LafayetteIN 47906USA Department of Electrical Engineering and Information Systems School of EngineeringThe University of Tokyo7-3-1 Hongo Bunkyo-kuTokyo 113-8656Japan

Lightweight,flexible,and conformal bioelectronics are essential for wearable *** paper introduces 270 nm thin organic electronics amplifying circuits that are self-adhesive,skin conformal,and long-term *** report studies the effect of total device thickness,namely 3μm and 270 nm devices,on the characterization of organic devices before and after buckling,the longevity of organic field-effect transistors(OFETs)over 5 years,and the lamination of OFETs on the human skin.A single-stage organic complementary inverter and a pseudo-complementary amplifier are fabricated to compare their electrical characteristics,with amplification gains of 10 and 64,***,the study demonstrates a five-stage organic complementary inverter can successfully amplify artificial electromyogram and electrocardiogram signals with gains of 1000 and 1088,respectively.

关键词： transistors amplifier complementary

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Numerical study of aerosol particle deposition in simple and converging-diverging micro-channels with a slip boundary condition at the wall

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Particuology 2014年第2期12卷 100-105页

作者： Seyed mohammad javad hosseini Ataallah Soltani Goharrizi Bahador Abolpour Department of Chemical Engineering Faculty of EngineeringShahid Bahonar University of Kerman

The design of micro-devices involving aerosol transport requires the study of the deposition of aerosols in micro-channels. In this study, the slip and no-slip boundary conditions for the gas flow regime were applied to the Navier-Stokes equations to obtain the particle deposition in simple and converging-diverging micro-channels. The equation of particle motion included inertial, viscous, Brownian, and gravity terms. It was found that the ratio of gravity to inertial effects controls the deposition of particles with diameters of 0.1-1 μm, and the ratio of diffusion to inertial effects controls the deposition of particles with diameters of 0.01-0.001 i^m. Comparison between the no-slip and slip flow regimes showed that the deposition of 0.1- to 1-μm-diameter particles was less and the deposition of 0.01- to 0.001-1μm-diameter particles was greater for the slip flow regime. There was no significant difference between slip and no-slip flow regimes for the deposition of 0.01- to 0.1-μm-diameter particles. Finally, it was shown that the stagnated gas in the corners of the converging-diverging micro-channel produced similar gas velocity profiles under the slip and no-slip flow regimes.

关键词： Aerosol depositionMicro-channelConverging-diverging micro-channelSlip boundary condition

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多孔纳米结构Fe/Pt-Fe电极对碱性介质中甲醇电氧化的催化活性（英文）

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催化学报 2015年第7期36卷 1029-1034页

作者： javad hosseini Mehdi Abdolmaleki Hamid Reza Pouretedal mohammad Hossein Keshavarz Department of Chemistry Malek-ashtar University of Technology Faculty of Science Department of ChemistrySayyed Jamaleddin Asadabadi University

An electrochemical approach to fabricate a nanostructured Fe/Pt-Fe catalyst through electrodeposition followed by galvanic replacement is presented. An Fe/Pt-Fe nanostructured electrode was prepared by deposition of Fe-Zn onto a Fe electrode surface, followed by replacement of the Zn by Pt at open-circuit potential in a Pt-containing alkaline solution. Scanning electron microscopy and energy-dispersive X-ray techniques reveal that the Fe/Pt-Fe electrode is porous and contains Pt. The electrocatalytic activity of the Fe/Pt-Fe electrode for oxidation of methanol was examined by cyclic voltammetry and chronoamperometry. The electrooxidation current on the Fe/Pt-Fe catalyst is much higher than that on flat Pt and smooth Fe catalysts. The onset potential and peak potential on the Fe/Pt-Fe catalyst are more negative than those on flat Pt and smooth Fe electrodes for methanol electrooxidation. All results show that this nanostructured Fe/Pt-Fe electrode is very attractive for integrated fuel cell applications in alkaline media.

关键词：电催化活性甲醇氧化纳米铁碱性介质铂电极多孔 Fe催化剂扫描电子显微镜

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Electrostatic Charge Generation in Pneumatic Conveying Process: Effect of Particle Properties

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Journal of Power and Energy Engineering 2019年第6期7卷 1-11页

作者： Manoochehr Fathollahi mohammad Eghbal Ahmadi Seyed mohammad javad hosseini Department of Material and Manufacturing Technologies Malek Ashtar University of Technology Tehran Iran Department of Chemical and Petroleum Engineering Sharif University of Technology Tehran Iran

One of the main concerns in particle pneumatic conveying process is the possibility of hazards for operation safety due to the electrostatic charge generation as a result of collisions between particles and the equipment wall. Indeed, the electrostatic discharge can occur in the equipment leading to fire or explosion. Simulation of these kinds of processes plays an important role in understanding the various aspects of the system in order to production loss prevention. This paper deals with the simulation of particle pneumatic conveying process inside an inclined tube using a particular method. In this method, the electrification of particles inside the tube is influenced by the vertical collision velocity against the tube wall. Simulation of the particle movements inside the tube, generation of electrostatic charges over the particle surfaces as well as the possibility of fire as a result of discharging the electrostatic energy are investigated. The possibility of fire is investigated by comparing the amount of electrostatic energy with minimum ignition energy (MIE) of the particles. The effect of particle properties including the size and mechanical ones in the simulation is studied. Finally, several solutions are proposed to manage the risk of fire and explosion. As results, the electrostatic energy (E) is beyond the MIE, and the electrostatic discharge can occur leading to explosion for the diameters more than 2 mm and also for elasticity constants lower than 140 MPa. Eventually, there is no hazard of fire and explosion, since all calculated electrostatic energy for the change of Particle Poisson’s ratio varying from 0.1 to 0.9 is less than the MIE value for the air flow rate of 10 m3/h.

关键词： Electrostatics Pneumatic Conveying Simulation Powder Technology Particle Charge

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Traumatic myiasis agents in Iran with introducing of new dominant species,Wohlfahrtia magnifica(Diptera:Sarcophagidae)

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Asian Pacific Journal of Tropical Biomedicine 2014年第6期4卷 451-455页

作者： javad Rafinejad Kamran Akbarzadeh Yavar Rassi Jamasp Nozari mohammad Mehdi Sedaghat Mostafa hosseini Hamzeh Alipour Abdolmajid Ranjbar Danial Zeinali Department of Medical Entomology School of Public HealthTehran University of Medical Sciences Department of Plant Protection Faculty of Agronomy SciencesCollege of Agriculture and Natural ResourcesUniversity of Tehran Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical Sciences Faculty of Public Health and Nutrition Shiraz University of Medical Sciences Agricultural Jihad of Fars province Management of Darab Agricultural Jihad Agricultural Jihad of Fars province.Management of Abadeh Agricultural Jihad

Objective:To study agents of animal wound myiasis in various geographical districts of Fars ***:This study has been done in Fars province,located in the southern part of *** of 10358 domestic animals have been visited from April 2011 to March *** infected wounds in any parts of animal body were sampled by means of ***:About 61%of all animal wound myiasis were caused by larvae of Wohlfahrtia *** most wound myiasis cases due to this species occurred in central part of Fars *** wasn't any significant difference between sheep and goat in infestation with myiasis(P>0.05).The infestation rate of myiasis in cattle community was 0.86%.Conclusions:The infestation rate of livestock was lower than other works in Iran and some other countries like Saudi *** bezziana has been mentioned as main myiasis agent in *** in this study it cleared that similarly to some European countries,the common animal myiasis agent in Iran is Wohlfahrtia *** new species as principal agent for myiasis can help public health and animal husbandry policy makers to prepare sufficient and effective control and/or preventive measures for this disease.

关键词： Traumatic myiasis Wohlfahrtia magnifica Sheep and goats Iran

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活体异体结膜缘和羊膜移植治疗化学性眼外伤造成的角膜缘干细胞缺失(英文)

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国际眼科杂志 2008年第6期8卷 1095-1100页

作者： Mehdi hosseini Tehrani Asoo Ali Mahmoudi Hassan Hashe-mi Syed Jafar Oskouee javad Amuzadeh mohammad Taher Rajabi Masoomeh Taherzadeh Hamideh Shenazandi 伊朗德黑兰大学医学院眼科 Farabi眼科医院眼科研究中心

目的:评价利用活体异体结膜缘和羊膜移植治疗化学性眼外伤造成的角膜缘干细胞缺失的临床效果。方法:从2005-07/2007-12,本研究包括了9名男性化学性眼外伤患者(10眼)。所有患者接受了亲属活体异体结膜缘和羊膜移植,2例眼接受了睑缝术。... 详细信息

目的:评价利用活体异体结膜缘和羊膜移植治疗化学性眼外伤造成的角膜缘干细胞缺失的临床效果。方法:从2005-07/2007-12,本研究包括了9名男性化学性眼外伤患者(10眼)。所有患者接受了亲属活体异体结膜缘和羊膜移植,2例眼接受了睑缝术。用环孢菌素和泼尼松龙进行全身性免疫抑制。结果:在3例眼中观察到完全角膜上皮化(30%),其中1例在术后1.5mo出现免疫排斥,角膜溶解引起穿孔,加大全身性免疫抑制剂量来控制病情。3例眼中植片无法在角膜表面重新形成上皮,被定为原发性失败。其余4眼有部分上皮形成,但上皮细胞无法完全覆盖角膜表面。术前最佳矫正视力从手动到1m处数指,术后最佳矫正视力从光感到20/80。有5眼视力得到改进,不需其他治疗。手术失败的主要原因为干眼症和持续性炎症。结论:对于能控制泪量和眼部炎症的病例,亲属活体异体角膜缘和羊膜移植是治疗化学性眼外伤造成的角膜缘干细胞缺失最佳方法之一。

关键词：眼化学伤活体异体结膜缘移植羊膜移植

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