International Journal of Physics: Study and Research最新文献

Spin-Mediated Electron Pairing 自旋介导电子对

International Journal of Physics: Study and Research Pub Date : 2021-12-31 DOI: 10.18689/ijpsr-1000115

F. Mayer

引用次数: 0

Laser Challenge of China 中国激光挑战

International Journal of Physics: Study and Research Pub Date : 2021-11-10 DOI: 10.18689/ijpsr-1000114

Apollonov Victor Victorovich

引用次数: 0

Charged Anisotropic Matter with Modified Chaplygin Equation of State 修正Chaplygin状态方程的带电各向异性物质

International Journal of Physics: Study and Research Pub Date : 2021-01-22 DOI: 10.18689/IJPSR-1000113

M. Malaver, Prof Dr Hamed Daei Kasmaei

引用次数: 3

Relativistic Radiation Power of Spinning Black Holes 旋转黑洞的相对论辐射功率

International Journal of Physics: Study and Research Pub Date : 2020-03-17 DOI: 10.18689/IJPSR-1000112

Dipo Mahto

引用次数: 1

Super Volcano Activity (Yellowstone and Elbrus): Parameters of Sensitivity 超级火山活动(黄石和厄尔布鲁士):敏感性参数

International Journal of Physics: Study and Research Pub Date : 2019-11-08 DOI: 10.18689/ijpsr-1000110

B. KhavroshkinOleg, Tsyplakov Vladislav

{"title":"Super Volcano Activity (Yellowstone and Elbrus): Parameters of Sensitivity","authors":"B. KhavroshkinOleg, Tsyplakov Vladislav","doi":"10.18689/ijpsr-1000110","DOIUrl":"https://doi.org/10.18689/ijpsr-1000110","url":null,"abstract":"The commonality of cyclic processes and rhythms of super volcanoes with periodic components of solar neutrino and muons fluxes is a subject of modern research. This study includes new additional factors - solar flares and thermal fields of radioactive structures. Experimental basis of research - simultaneous observations of temperature in the creek of the Yellowstone volcano caldera and in the laboratory of the Institute of Physics of the Russian Academy of Sciences on cesium and uranium ore 235. There is a shift of the maximum correlation by 36.5 days relative to variations in the temperature of cesium 137. That is, the flux of solar neutrinos and muons almost simultaneously affect cesium 137 and the radioactive substances of the magma chambers of the super volcano, but thermal variations of magma and surrounding structures reach the surface of the day and the sources of the stream in only 36.5 days. The study of the fine structure of temperature fields in the thickness of the Elbrus rocks as a super volcano was carried out with precision thermometers that allow temperature measurements with a sensitivity of ~0.005°C in the gallery of the North Caucasus Geophysical Observatory of the Physical Institute of Physics, Russian Academy of Sciences, that is, in the Baksan Gorge at a distance of 4100 m from the mouth of the Baksan Neutrino Division of the neutrino system. The inter correlation function between the radioactivity variations of uranium ore in the laboratory of the Institute of Physical Problems of the Russian Academy of Sciences with hourly averaging and variations in the temperature of a radioactive source during hourly averaging strongly correlate, that is, a forecast of the activation of volcanism by the level of radiation from a laboratory source is possible. On the other hand, one can point to the general sensitivity parameters of volcanoes: temperature fields, interaction with the neutrino solar flux, solar flares, and the level of radioactivity of the volcanic zone.","PeriodicalId":319356,"journal":{"name":"International Journal of Physics: Study and Research","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122936926","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

Level of Electromagnetic Radiation Emitted from Mobile Phone Base Station during F1 Race in the Kingdom of Bahrain 巴林王国F1比赛期间移动电话基站发出的电磁辐射水平

International Journal of Physics: Study and Research Pub Date : 2019-09-04 DOI: 10.18689/ijpsr-1000109

Hassan Alnajjar, N. Alnaser, W. Alnaser

{"title":"Level of Electromagnetic Radiation Emitted from Mobile Phone Base Station during F1 Race in the Kingdom of Bahrain","authors":"Hassan Alnajjar, N. Alnaser, W. Alnaser","doi":"10.18689/ijpsr-1000109","DOIUrl":"https://doi.org/10.18689/ijpsr-1000109","url":null,"abstract":"Measuring the power density of the Electromagnetic Radiation (EMR), or Radio frequency radiation, emitted from the mobile base station (transmitting mast) during three days event of Formula 1 Race in 4th, 5th and 6th April 2008 at Bahrain International Circuit, Kingdom of Bahrain, revealed that the exposure to EMR is much lower than the allowable limit set by several professional organization (seven organizations); it represents less than 0.1%. The instantaneous recorded power density at distances 160 m, 230 m and 300 m from the transmitting mast were, on average, 46.5 µW/m 2 , 86.8 µW/m 2 , 395.8 µW/m 2 , respectively. The highest recorded instantons power density during the whole event was 901 µW/m 2 and was on Sunday afternoon of 6 th April 2008, where it was the winner announcing day. The long- term recorded power density during this international event shows lots of variation during this 90 minutes recording in last day (Sunday) of the event which is winner announcement event. This indicates that F1 spectators do substantial number of phone calls during the events where the variation in this day was from 0.607 µW/m 2 to 16.832 µW/m 2 while in Saturday was from 0.313 µW/m 2 to 5.455 µW/m 2 and in Friday was from 0.139 µW/m 2 to 2.356 µW/m 2 .","PeriodicalId":319356,"journal":{"name":"International Journal of Physics: Study and Research","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133095746","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

Determining Optical Constants of Sol-Gel Vanadium Pentoxide Thin Films using Transmittance and Reflectance Spectra 用透射光谱和反射光谱测定溶胶-凝胶型五氧化二钒薄膜的光学常数

International Journal of Physics: Study and Research Pub Date : 2019-07-09 DOI: 10.30845/ijast.v9n3p4

N. Tashtoush, Afafsheiab Afafsheiab, S. Momani, M. Jafar

{"title":"Determining Optical Constants of Sol-Gel Vanadium Pentoxide Thin Films using Transmittance and Reflectance Spectra","authors":"N. Tashtoush, Afafsheiab Afafsheiab, S. Momani, M. Jafar","doi":"10.30845/ijast.v9n3p4","DOIUrl":"https://doi.org/10.30845/ijast.v9n3p4","url":null,"abstract":"Published by Madridge Publishers Abstract Vanadium pentoxide (V2O5) thin films have been prepared by Sol-Gel technique. The fluid resin which was prepared by dissolving V2O5 powder (99.6%) in H2O2 was spin coated on a glass substrate at room temperature. The effect of preparation conditions, such as spin speed and acceleration, on the film thickness has been investigated. Speed was found to be the most affecting parameter on the film thickness. Transmittance and reflectance spectra were made at normal incidence on these films in the range of 350-900 nm. SCOUT program was used to find out the thickness of all samples. In the region of the fundamental absorption edge, the absorption coefficient was calculated directly from the experimental transmittance and reflectance data using a formula that is nearly valid for non-uniform in homogeneous films. Moreover, the bandgap energy was found to be around 2.3 eV. The refractive index of the films was calculated using PUMA code which is based on a certain fitting procedure for transmittance spectra according to Swanepoel formula. All results were in good agreement with those found in literature.","PeriodicalId":319356,"journal":{"name":"International Journal of Physics: Study and Research","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131014223","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: 6

Cancer as a Chronic Disease with which Human can Coexist 癌症是人类可以共存的慢性病

International Journal of Physics: Study and Research Pub Date : 2018-06-28 DOI: 10.18689/IJPSR-1000106

Emad Y Moawad

{"title":"Cancer as a Chronic Disease with which Human can Coexist","authors":"Emad Y Moawad","doi":"10.18689/IJPSR-1000106","DOIUrl":"https://doi.org/10.18689/IJPSR-1000106","url":null,"abstract":"The aim of the current study is to establish new physical tumor-markers for the effectiveness of the cancer therapy upon which human can coexist with cancer as a chronic disease. Doubling Time-Energy Conversion (DT-EC) during tumor formation and cancer therapy were investigated in groups of mice i.p. injected with (1x106) HeyA8 MDR cells and (2.5x105) HeyA8 cells, and treated by cell cycle specific drug (docetaxel) one week after tumor cell injection. Therapy for HeyA8 tumor model consisted of three groups: (a) Phosphate Buffered Saline (PBS), (b) Maximum Tolerated Dose (MTD) for Docetaxel (15 mg/kg every 2 weeks), (c) metronomic Docetaxel (0.5 mg/kg thrice weekly). Therapy for HeyA8 MDR tumor model consisted of two groups: (a) PBS, (b) MTD Docetaxel (15 mg/kg every 2 weeks) Mice were monitored for adverse effects and tumors were harvested after 3 to 4 weeks of therapy. Tumor of advanced stage (HeyA8 MDR model) was characterized by higher rate (1st derivative) of DT-EC (with respect to the doubling time) and faster deceleration (2nd derivative) of DT-EC (with respect to the doubling time). Energies yield by equivalent doses with same regimen (MTD) in both tumor models were identical regardless to tumor size or resistance. Metronomic regimen was more effective than the standard one in HeyA8 model. Despite the dose of the metronomic regimen (147μ g/mL) was about one fifth of that of the MTD of the standard one (840μ g/mL) the energy yield by the smaller dose was greater than that yield by the higher one with more reduction in the rate of DT-EC and more slowing for the DT-EC deceleration. Thus the effectiveness of the cancer therapy is assessed by how much the 1st derivative of DT-EC has been minimized and by how much the 2nd derivative of DT-EC has been slowed down to treat cancer as a chronic disease with which human can coexist as long as possible.","PeriodicalId":319356,"journal":{"name":"International Journal of Physics: Study and Research","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128239547","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

Kaluza-Klein FRW type Perfect Fluid Cosmological Models with Linearly varying Deceleration Parameter in a Modified Gravity 修正重力下具有线性变减速参数的Kaluza-Klein FRW型完美流体宇宙学模型

International Journal of Physics: Study and Research Pub Date : 2018-06-28 DOI: 10.18689/IJPSR-1000105

D. Reddy, Y. Aditya

引用次数: 2

Thermal Conductivity and Diffusivity of Polymers 聚合物的热导率和扩散率

International Journal of Physics: Study and Research Pub Date : 2018-06-28 DOI: 10.18689/IJPSR-1000107

B. M. Suleiman

引用次数: 1