IOSR Journal of Applied Physics最新文献_第4页

Disappearance and Reappearance of Dust Particles in Cogenerated Dusty Plasma 共生尘埃等离子体中尘埃粒子的消失与再现

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903030104

Malay Mondal, S. Sarkar, S. Mukherjee, M. Bose

{"title":"Disappearance and Reappearance of Dust Particles in Cogenerated Dusty Plasma","authors":"Malay Mondal, S. Sarkar, S. Mukherjee, M. Bose","doi":"10.9790/4861-0903030104","DOIUrl":"https://doi.org/10.9790/4861-0903030104","url":null,"abstract":"In this unique experiment, where dust is produced in a sub-atmospheric pressure plasma formed between two parallel plate electrodes using a bipolar pulsed dc power supply as the source of power for plasma production, dust disappearance for few seconds is experimented. The plasma forming gas is a mixture of argon and acetylene. The plasma phase chemical reactions help in the formation of sub-micron dust particles that grow in size between two parallel electrodes. Using another single negative pulse, placed in between two electrodes, applied to another electrode, the dust particles can be disappeared for significant duration from the dusty plasma zone. The applied single pulse voltage is varied between 50-250 V. On the application of the pulse, in its initial phase, the dusty plasma gets disturbed and for some duration (~ few seconds) there is no light scattering observed, indicating that the dust is disappeared from the region between the electrodes. Later the plasma formation again reappears and similar structured dusty cloud is formed. The results are important as it gives an idea how to displace some unwanted dusts from our required region to another region.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"48 1","pages":"01-04"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90366257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Quality Assurance of Three Dimensional Treatment Planning System For External Photon Beam Radiotherapy 外光子束放射治疗三维计划系统的质量保证

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-090301125133

M. Aly, H. Negm, S. A. Fouad

{"title":"Quality Assurance of Three Dimensional Treatment Planning System For External Photon Beam Radiotherapy","authors":"M. Aly, H. Negm, S. A. Fouad","doi":"10.9790/4861-090301125133","DOIUrl":"https://doi.org/10.9790/4861-090301125133","url":null,"abstract":"Background: The quality assurance of 3D treatment planning system (TPS)will be investigated by different things such as beam configuration, dose calculation and plane evaluation which uses dose volume histogram analyzes. Material and method: the study was performed by XIO TPS (version 4.3.3) available at South Egypt Cancer Institute (SECI). This TPS employs two different 3D algorithms (Clarkson (CLK) and Fast Fourier Transform Convolution (CON)). Relative dose calculation (RDC) in terms of percentage depth dose (PDD) and off axis beam profiles (OAR) and absolute dosecalculation (ADC) in terms of dose and output factor were used and compared with the measured one using ionization chambers with water or solid phantoms in medical linear accelerator linac (Siemens Mevatron MD2).Two photon energies 6MV and 15MV were studied using field sizes of 10×10cm2 and 25×25cm2 for open field. Results: The OAR and PDD are divided into regions each of these having a tolerance limit of the accuracy acceptable. The large point of deviation appeared in field size 25×25cm2 at energy 15MV in outer regionδ4 of OAR. This region recorded the largest deviation than the others regions. In PDD curves haven’t any deviation.Larger deviations were observed with CLK algorithm compared to CON algorithm. 20 points out of criteria were observed in the RDC of a large field size 25×25cm2, while 16 points were out of criteria in the field size 10×10cm2. Conclusion: This work presents a feasibility and performance of quality assurance tasks the TPS for external","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"57 1","pages":"125-133"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88471587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pertinent Shape Effects of Gold Nanospheres and Nanostellates 金纳米球和纳米星的相关形状效应

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903032126

Manoj Verma, Boazbou Newmai, Abhitosh kedia, P. Kumar

引用次数: 0

Study Of Superconductivity And Antiferromagnetism In Rare Earth Nickel Borocarbides (RNi2B2C) 稀土硼碳化镍(RNi2B2C)的超导性和反铁磁性研究

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903027180

S. Das, Preeti Suman Dash

引用次数: 2

Enlargement of bandgap in 1-D photonic crystal heterostructures 一维光子晶体异质结构中带隙的增大

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-09030297102

J. P. Pandey, U. K. Pandey

引用次数: 0

Gold Nanoparticle Doped PVDF Nanofiber Preparation of Concurrently Harvesting Light and Mechanical Energy 纳米金掺杂PVDF纳米纤维的制备及其光能和机械能兼收

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903030512

Binoy Bera, M. Sarkar

{"title":"Gold Nanoparticle Doped PVDF Nanofiber Preparation of Concurrently Harvesting Light and Mechanical Energy","authors":"Binoy Bera, M. Sarkar","doi":"10.9790/4861-0903030512","DOIUrl":"https://doi.org/10.9790/4861-0903030512","url":null,"abstract":"PVDF (polyvinylidene fluoride) is a very well known material for converting mechanical energy into electrical energy and gold nanoparticle are versatile material for a broad range of applications with well characterized electronic and physical properties. In this work, we developed gold nanoparticle doped PVDF nanofiber based nanogenerators which are concurrently harvest light and mechanical energy into electrical energy. Here nanofiber has been made by electrospinning process. Characterization of fiber has been done by FE – SEM instrument , UV – VIS spectroscopy instrument and FTIR instrument. Beside this, characterization of film (Casted at 120 0 c) has also been done . For nanogenerator preparation ITO coated polyethylene terephthalate (PET) and silver fabric were used as electrodes. Finally polydimethylsiloxane (PDMS) were used for coating these nanogenerators. Electrical output data have taken in different combination of light and mechanical energy and calculated the damping ratio of these nanogenerators (before PDMS coating) in cantilever geometry. In future GO, RGO or Semiconductor quantum dots (QDs) can be incorporated into this nanofiber based nanogenerator for improvement of better optical ,electrical and/or electronic properties.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"72 1","pages":"05-12"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80018923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Application of GIS and RS for Flood Evacuation Planning: Olpad Taluka (Surat) Case Study GIS和RS在洪水疏散规划中的应用——以苏拉特奥帕德塔卢卡为例

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903025761

D. K. Mathur

{"title":"Application of GIS and RS for Flood Evacuation Planning: Olpad Taluka (Surat) Case Study","authors":"D. K. Mathur","doi":"10.9790/4861-0903025761","DOIUrl":"https://doi.org/10.9790/4861-0903025761","url":null,"abstract":"Flood is natural phenomenon which brings damage to properties, infrastructures, animals, plants and human lives. Issue of flood involves the emergency response of services related to evacuation relief center and health center facility.GIS and Remote sensing helps to identify suitable relief centers, road network availability and evacuation planning. (The Role of GIS in Emergency Planning, 2011).Evacuation planning is useful at time of disaster for movement of people to a safer location and their return. For evacuation planning shelters are identify from existing schools, colleges. Shelters are not located in normal flood area .Road network is available between relief center and flood area All this information and decision making is done with help of GIS (National Disaster Management Guidelines Management of Floods, January 2008).In this research paper as a case study evacuation planning for villages of Olpad Taluka of Surat are studied. These villages are highly vulnerable for flooding due to flood in Tapi river.Evacution of people from flooded area to high elevation safe location is necessary. In this research based on resources available, elevation of village area, population density of area are studied. Suitable available shelter is identified which contains necessary facility for hospital, food, rail and road network. These locations are identified and digitized in QGIS software complete evacuation plan is discuss in this paper.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"85 1","pages":"57-61"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80192111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compositional effects on the thermo dynamical properties of Ge40-xSe60Inx Chalcogenide Glasses 组分对Ge40-xSe60Inx硫系玻璃热力学性能的影响

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903028184

A. Prasad, A. Saxena, S. Tiwari

引用次数: 0

Phonon Green’s Function; a Quanta Approaches 声子格林函数;a量子方法

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903024751

Saurabh Kumar, K. Kumar

引用次数: 0

Investigation of SR method grown directed Praseodymium doped KDP crystal and its Single crystal Xrd, LDT, thermal, mechanical, Etching, FTIR, SEM & TEM analysis SR法生长定向掺镨KDP晶体及其单晶Xrd、LDT、热、力学、刻蚀、FTIR、SEM和TEM分析的研究

IOSR Journal of Applied Physics Pub Date : 2017-06-01 DOI: 10.9790/4861-0903033239

V. Roopa, R. Kumari

引用次数: 0