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IOSR Journal of Applied Physics最新文献

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Volt-Ampere Characteristics for Arc Discharge in Low Pressure at Gas CO2 低压CO2气体下电弧放电的伏安特性
IOSR Journal of Applied Physics Pub Date : 2017-04-01 DOI: 10.9790/4861-0902020510
Abdulhussain A. Khadyair, Dr.Ahmed Hmeed wanas, J. Haji
{"title":"Volt-Ampere Characteristics for Arc Discharge in Low Pressure at Gas CO2","authors":"Abdulhussain A. Khadyair, Dr.Ahmed Hmeed wanas, J. Haji","doi":"10.9790/4861-0902020510","DOIUrl":"https://doi.org/10.9790/4861-0902020510","url":null,"abstract":": The research paper discussthe change in current and voltage of arc discharge with the pressure CO 2 gas respectively. at gas pressure of (2Torr) to (12Torr), we measured current and voltage at this range of pressures byvarying distances were changing the distance between the electrodesat range 1mm to 10mm as shown through research that the current and voltage are changing with every change of pressure and the distance.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"88 1","pages":"05-10"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76782189","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
Performance Gap among Male and Female College Students Measured With the Force Concept Inventory 用力概念量表测量男女大学生成绩差距
IOSR Journal of Applied Physics Pub Date : 2017-04-01 DOI: 10.9790/4861-0902021113
H. Salameh, M. Nuseirat, K. Alkofahi
{"title":"Performance Gap among Male and Female College Students Measured With the Force Concept Inventory","authors":"H. Salameh, M. Nuseirat, K. Alkofahi","doi":"10.9790/4861-0902021113","DOIUrl":"https://doi.org/10.9790/4861-0902021113","url":null,"abstract":"In this article we present our results on a study of performance gap among our male and female college students. Our choice for the study tool for this work was the force concept inventory (FCI). We gave the test to our students twice; before and after our instructions on force and motion. The overall performance of male and female students in both tests along with details about individual questions is reported. The mean percentage scores showed a gender gap in favor of male students. Male students outperformed female students in almost every one of the thirty questions of the inventory in both the pre and the post test.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"5 1","pages":"11-13"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82458465","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: 3
Low Cost Synthesis of Single Walled Carbon Nanotubes from Coal Tar Using Arc Discharge Method 煤焦油电弧放电法低成本合成单壁碳纳米管
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0901032731
M. Saha
{"title":"Low Cost Synthesis of Single Walled Carbon Nanotubes from Coal Tar Using Arc Discharge Method","authors":"M. Saha","doi":"10.9790/4861-0901032731","DOIUrl":"https://doi.org/10.9790/4861-0901032731","url":null,"abstract":"There are various methods such as arc discharge, laser ablation, chemical vapour deposition (CVD), template-directed synthesis for the growth of CNTs in the presence of catalyst particles. The production of carbon nanotubes in large quantities is possible with inexpensive coal as the starting carbon source by the arc discharge technique. It is found that a large amount of carbon nanotubes of good quality can be obtained in the cathode deposits in which carbon nanotubes are present in nest-like bundles. For more than two decades, now, there has been extensive research on the production of carbon nanotubes (CNT) and optimization of its manufacture for the industrial applications. It is believed that they are the strong enough but most flexible materials known to mankind. They have potential to take part in new nanofabricated materials. It is known that, carbon nanotubes could behave as the ultimate one-dimensional material with remarkable mechanical properties. Moreover, carbon nanotubes exhibit strong electrical and thermal conducting properties. This paper primarily concentrates on the optimising such parameters related to the mass production of the product. It has been shown through Simplex process that based on the cost of the SWNT obtained by the arc discharge technique, the voltage and the current should lie in the range of 30 42 V and 49 66 A respectively. Any combination above the given values will lead to a power consumption cost beyond the final product cost, in turn leading to infeasibility of the process. Strong expectations exist for future use of carbon nanotubes as composite materials in a large number of industries. Production cost and control of the purity and properties of such materials will influence the impacts nanotubes on the chemical, computer and construction industries. Coal properties in this case are also important. Weak bonds and mineral matter in the coal play an important role in the formation of the nanotubes.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"34 1","pages":"27-31"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75676387","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
Impact of Harmattan Sun and Dust of the Eye in a Nigeria City 哈玛坦太阳和眼尘对尼日利亚某城市的影响
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0903010106
R. Meindinyo, M. Misra, R. Orji
{"title":"Impact of Harmattan Sun and Dust of the Eye in a Nigeria City","authors":"R. Meindinyo, M. Misra, R. Orji","doi":"10.9790/4861-0903010106","DOIUrl":"https://doi.org/10.9790/4861-0903010106","url":null,"abstract":"","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"18 1","pages":"01-06"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74113335","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: 4
Spherical and Cylindrical Ion Acoustic Solitary Waves in Electron-Positron-Ion Plasmas with Non-Maxwellian Electrons and Positrons 带有非麦克斯韦电子和正电子的电子-正电子-离子等离子体中的球形和圆柱形离子声孤波
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0901035158
Sukhjeet Kaur
{"title":"Spherical and Cylindrical Ion Acoustic Solitary Waves in Electron-Positron-Ion Plasmas with Non-Maxwellian Electrons and Positrons","authors":"Sukhjeet Kaur","doi":"10.9790/4861-0901035158","DOIUrl":"https://doi.org/10.9790/4861-0901035158","url":null,"abstract":"The propagation of cylindrical and spherical ion acoustic solitary waves in a plasma system consisting of ions, electrons and positrons are investigated. The electrons and positrons are assumed to be following the nonextensive distribution popularly known as Tsallis distribution. The standard nonlinear equation i.e. Korteweg de-Vries (KdV) equation has been solved numerically using suitable mathematical transformations. The effect of nonextensivity (q) and nonplanar geometry on the amplitudes and width of ion acoustic potential structures have been studied numerically. A transition from negative to positive potential structures have been observed for the planar as well as nonplanar geometries for lower values of q in the range −1 < q < 0. Soliton amplitude is maximum for spherical waves and is minimum and for planar waves while it lies in between the two for cylindrical waves. The present investigation may help us in understanding the study of cylindrical and spherical solitary waves in astrophysical plasmas.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"2 1","pages":"51-58"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90199013","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: 2
Investigation of Structural, Spectral, Optical and Thermal properties in Grown Pure Bis Thiourea Zinc Acetate (BTZA) 生长纯双硫脲醋酸锌(BTZA)的结构、光谱、光学和热性能研究
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0902012632
N. Abraham
{"title":"Investigation of Structural, Spectral, Optical and Thermal properties in Grown Pure Bis Thiourea Zinc Acetate (BTZA)","authors":"N. Abraham","doi":"10.9790/4861-0902012632","DOIUrl":"https://doi.org/10.9790/4861-0902012632","url":null,"abstract":"The nonlinear optical single crystal of bisthiourea zinc acetate (BTZA) was grown successfully by slow evaporation technique using water as solvent at room temperature. The lattice parameters of the grown crystal were determined by X-ray diffraction studies. The quality of the grown crystal was examined by scanning electron microscopy (SEM).The optical transparency was determined by UV-visible and photoluminescence spectroscopy studies. The thermal behavior of the grown crystal was investigated by DTA and TGA analysis. The presence of functional group was studied using FTIR spectra. The second harmonic generation (SHG) of BTZA was confirmed the nonlinear property of the crystal by Kurtz powder technique.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"1 1","pages":"26-32"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75670734","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
Electrical measurements on ZnSO4 doped L-Threonine single crystals ZnSO4掺杂l -苏氨酸单晶的电学测量
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0902012125
S. Christopher
{"title":"Electrical measurements on ZnSO4 doped L-Threonine single crystals","authors":"S. Christopher","doi":"10.9790/4861-0902012125","DOIUrl":"https://doi.org/10.9790/4861-0902012125","url":null,"abstract":"","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"19 1","pages":"21-25"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91529856","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
The Formation of Elements 元素的形成
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0902010813
Z. Yin
{"title":"The Formation of Elements","authors":"Z. Yin","doi":"10.9790/4861-0902010813","DOIUrl":"https://doi.org/10.9790/4861-0902010813","url":null,"abstract":"","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"131 1","pages":"08-13"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76417954","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: 2
Mathematical Model Development Using Commercial Polypropylene to Evaluate Degradation of Plastic Under the Thermal Fatigue Cycles; Modelling approach. 热疲劳循环下商品聚丙烯塑性退化数学模型的建立造型的方法。
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0902014349
L. Rohitha
{"title":"Mathematical Model Development Using Commercial Polypropylene to Evaluate Degradation of Plastic Under the Thermal Fatigue Cycles; Modelling approach.","authors":"L. Rohitha","doi":"10.9790/4861-0902014349","DOIUrl":"https://doi.org/10.9790/4861-0902014349","url":null,"abstract":"Recycling of waste plastics is of great interest in solid waste management and characterization of waste plastic. The change of stress-strain behaviour of waste plastic depends on environment factors and the number of days exposed to heating at day time and cooling at night. Stress-strain behaviour of commercial grade polypropylene at the end of each thermal fatigue cycles was studied. Heating-cooling cycle was set to 8 hours for heating at a specified temperature (80°C, 100°C, 120°C 140°C and 160°C) and air cooling over night at ambient temperature. Toughness of each sample was calculated in two different ways, in one method it was calculated using regression equation based on stress values of strains at 0.5% , 1% , yield point, breaking point and strains at one third and two third of plastic region. In the other method, the geometrical area of the stress–strain curve was calculated using yield stress, breaking stress, elastic limit, young modules. Matching ratio of toughness (β) is defined as a new index to calculate the ratio of toughness calculated from regression equation and parameters of stress-strain curve. The percentage of relative difference of matching ratio (  %) of toughness is defined as another index. It is defined with respect to the matching ratio of commercial polypropylene samples without exposing to the thermal fatigue conditions ( 0  ).The percentage of the retention of plastic behaviour (RPB %) of commercial plastic product is defined as another index. It can be calculated when 0  is known. The proposed model can be used to calculates retention of plastic behaviour (RPB%) as a percentage with respect to the original state under the natural condition.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"22 1","pages":"43-49"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73162059","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
Poisson statistics of sparkling water bubbles 气泡的泊松统计
IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0902011720
S. Rendevski, Riste Popeski Dimovski
{"title":"Poisson statistics of sparkling water bubbles","authors":"S. Rendevski, Riste Popeski Dimovski","doi":"10.9790/4861-0902011720","DOIUrl":"https://doi.org/10.9790/4861-0902011720","url":null,"abstract":"A simple acoustic measurement method has been applied to demonstrate Poisson distribution of bubbles sparkling at a water surface. The quality of sparkling water has been determined by quantifying the characteristic time of decay of number of air bubbles sparkling at the surface of water served to consumers. The average sound frequency of the bubbles at sparkling has been found dependent on the chemical composition of the water (carbon dioxide and minerals concentration). The acoustic measurement method proved to be fast and reliable for determining the quality of appearance of served sparkling water.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":" 42","pages":"17-20"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91522915","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
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