Pub Date : 2019-04-10DOI: 10.9734/ajr2p/2019/v2i230098
U. Seshavatharam, S. Lakshminarayana
When heavenly bodies are made up of tiny atoms, it is imperative to find the correlations that might exist among ‘atoms’ and ‘heavenly body’ as a whole. In this context, by considering three virtual gravitational constants assumed to be associated with the three atomic interactions i.e. (electromagnetic, strong and weak interactions) and by considering four basic semi empirical (reference) relations pertaining to the four gravitational constants, a bold attempt is made to estimate the Newtonian gravitational constant (GN). Its fitted and recommended values are 6.679855x10-(11) m3/kg/sec2 and 6.67408x10-(11) m3/kg/sec2 respectively and error is -0.08653%. As current unification paradigm is failing in estimating (GN) from atomic and nuclear physical constants, our work can be recommended for further study.
{"title":"A Play with Four Virtual Gravitational Constants Associated with the Four Basic Interactions","authors":"U. Seshavatharam, S. Lakshminarayana","doi":"10.9734/ajr2p/2019/v2i230098","DOIUrl":"https://doi.org/10.9734/ajr2p/2019/v2i230098","url":null,"abstract":"When heavenly bodies are made up of tiny atoms, it is imperative to find the correlations that might exist among ‘atoms’ and ‘heavenly body’ as a whole. In this context, by considering three virtual gravitational constants assumed to be associated with the three atomic interactions i.e. (electromagnetic, strong and weak interactions) and by considering four basic semi empirical (reference) relations pertaining to the four gravitational constants, a bold attempt is made to estimate the Newtonian gravitational constant (GN). Its fitted and recommended values are 6.679855x10-(11) m3/kg/sec2 and 6.67408x10-(11) m3/kg/sec2 respectively and error is -0.08653%. As current unification paradigm is failing in estimating (GN) from atomic and nuclear physical constants, our work can be recommended for further study.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79866463","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}
Pub Date : 2019-04-02DOI: 10.9734/AJR2P/2019/V2I230097
U. Seshavatharam, S. Lakshminarayana
With reference to Planck scale, Mach’s relation, increasing support for large scale cosmic anisotropy and preferred directions and by introducing two new parameters Gamma and Beta, right from the beginning of Planck scale, we make an attempt to estimate ordinary matter density ratio, dark matter density ratio, mass, radius, temperature, age and expansion velocity (from and about the bay universe in all directions). We would like suggest that, from the beginning of Planck scale, 1) Dark matter can be considered as a kind of cosmic foam responsible for formation of galaxies. 2) Cosmic angular velocity is directly proportional to squared cosmic temperature. 3) Cosmic expansion velocity increases with decreasing total matter density ratio. 4) There is no need to consider dark energy for understanding cosmic acceleration.
{"title":"An Outline Picture of a Growing and Rotating Planck Universe with Emerging Dark Foam","authors":"U. Seshavatharam, S. Lakshminarayana","doi":"10.9734/AJR2P/2019/V2I230097","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I230097","url":null,"abstract":"With reference to Planck scale, Mach’s relation, increasing support for large scale cosmic anisotropy and preferred directions and by introducing two new parameters Gamma and Beta, right from the beginning of Planck scale, we make an attempt to estimate ordinary matter density ratio, dark matter density ratio, mass, radius, temperature, age and expansion velocity (from and about the bay universe in all directions). We would like suggest that, from the beginning of Planck scale, 1) Dark matter can be considered as a kind of cosmic foam responsible for formation of galaxies. 2) Cosmic angular velocity is directly proportional to squared cosmic temperature. 3) Cosmic expansion velocity increases with decreasing total matter density ratio. 4) There is no need to consider dark energy for understanding cosmic acceleration.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85651010","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}
Pub Date : 2019-03-15DOI: 10.9734/AJR2P/2019/V2I230094
U. Ibrahim, Musa Mohammed, I. Mustapha, A. Mundi, Idris Yahaya
In this study, an investigation of radiofrequency power density distribution around GSM mast in Keffi town, Nigeria was determined. Radiofrequency meter (Electrosmog ED- 155A) was used to measure the EM radiation at 50, 70, 90,110, 130, 150, 170, and 190 m away from mobile base stations. A total of fifteen mobile base stations were randomly selected in Keffi town covering about four network providers (MTN, Globacom, Etisalat, and Airtel), according to their proximity to buildings, number of antennas mounted on their masts, how close they are to other base stations and the population density around them.The result reveal that MBS5 was found to have the highest value of average power density compared to that of the remainder, with a contribution of about 16% (2908.38 µW/m2). The least contribution was recorded in MBS3 with only about 1% (173.71 μW/m2). The other MBS with significant contribution are MBS6 (15%), MBS11 (15%), MBS10 (13%), MBS8 (13%) and MBS13 (11%) with average power densities of 2878.72μW/m2, 2767.28μW/m2, 2385.43 μW/m2, 2382.70 μW/m2, and 1996.36 μW/m2 respectively. The findings reveal that the measured values of power densities across all the sites are well below the RF radiation exposure safety limit set by International Commission on Non-ionizing Radiation Protection (ICNIRP) when compared with the findings in this study. Therefore, RF radiation exposure from mobile base stations in Keffi town may pose no health risk to the people living within the area.
{"title":"Investigation of Radio-frequency Power Density Distribution around GSM Mast in Keffi Town, Nigeria","authors":"U. Ibrahim, Musa Mohammed, I. Mustapha, A. Mundi, Idris Yahaya","doi":"10.9734/AJR2P/2019/V2I230094","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I230094","url":null,"abstract":"In this study, an investigation of radiofrequency power density distribution around GSM mast in Keffi town, Nigeria was determined. Radiofrequency meter (Electrosmog ED- 155A) was used to measure the EM radiation at 50, 70, 90,110, 130, 150, 170, and 190 m away from mobile base stations. A total of fifteen mobile base stations were randomly selected in Keffi town covering about four network providers (MTN, Globacom, Etisalat, and Airtel), according to their proximity to buildings, number of antennas mounted on their masts, how close they are to other base stations and the population density around them.The result reveal that MBS5 was found to have the highest value of average power density compared to that of the remainder, with a contribution of about 16% (2908.38 µW/m2). The least contribution was recorded in MBS3 with only about 1% (173.71 μW/m2). The other MBS with significant contribution are MBS6 (15%), MBS11 (15%), MBS10 (13%), MBS8 (13%) and MBS13 (11%) with average power densities of 2878.72μW/m2, 2767.28μW/m2, 2385.43 μW/m2, 2382.70 μW/m2, and 1996.36 μW/m2 respectively. The findings reveal that the measured values of power densities across all the sites are well below the RF radiation exposure safety limit set by International Commission on Non-ionizing Radiation Protection (ICNIRP) when compared with the findings in this study. Therefore, RF radiation exposure from mobile base stations in Keffi town may pose no health risk to the people living within the area.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91106884","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}
Pub Date : 2019-03-13DOI: 10.9734/AJR2P/2019/V2I230092
O. Odeyemi, O. Odeyemi, S. A. Owolabi, E. A. Mamukuyomi, R. A. Salako
Owing to fast increase in number of staff and students of Joseph Ayo Babalola University, Ikeji Arakeji, Southwestern Nigeria, it is therefore very important to carry out this research in order to recommend the actual locations where boreholes can be sunk for good potential yields of groundwater when the time comes. The aim of this research is to carry out vertical electrical sounding geophysical survey at study area with a view to determining good aquifers that are good for the accumulation of groundwater. The study area is located between latitude 0820225 m to 0820345 m (UTM) Northings and longitude 717320 m to 717450 m (UTM) Eastings. Schlumberger electrode array was employed for the study using Ohmega Resistivity meter for the data acquisition. The geoelectric survey of the study area comprised of twelve vertical electrical soundings, with maximum current electrode spacing (AB) of 100 m. The modeled curves are mainly KH-type. The geoelectric sections generated from the sounding curves revealed 4 major layers earth models. The topsoil is made up of clay, clayey sand/lateritic sand with resistivity and thicknesses varying from 54.7 – 210.1ohm-m and 0.2 –0.8m respectively. The second layer is the lateritic clay with resistivities and thicknesses varying from 334 – 963ohm-m and 1.5 – 10.8m respectively. The third layer constitutes the clay / sandy fractured quartzite and it serves as the aquifer unit. The resistivity values lie between 71.7 and 498 ohm-m while the thicknesses vary from 2.1 – 76.3 m. The fourth layer is the fractured/presumably fresh basement bedrock with the resistivity varying from 1879 – 13991.8 ohm-m. Areas characterized with fractured basement of low resistivity with appreciable thickness are therefore recommended for the siting of boreholes. It is concluded that the vertical electrical sounding points of the study area are good aquifers for groundwater accumulation.
由于尼日利亚西南部Ikeji Arakeji的Joseph Ayo Babalola大学的教职员工和学生数量迅速增加，因此进行这项研究非常重要，以便在时机成熟时推荐可以钻孔的实际位置，以获得良好的潜在地下水产量。本研究的目的是在研究区进行垂直电测深地球物理调查，以确定适合地下水聚集的良好含水层。研究区位于北纬0820225 m ~ 0820345 m (UTM)和东经717320 m ~ 717450 m (UTM)之间。采用斯伦贝谢电极阵列进行研究，采用欧姆电阻率仪进行数据采集。研究区地电测量包括12个垂直电测深，最大电流电极间距(AB)为100 m。模型曲线以kh型为主。由测深曲线生成的地电剖面揭示了4层地球模型。表层土为粘土、粘土砂/红土砂，电阻率为54.7 ~ 210.10 ω -m，厚度为0.2 ~ 0.8m。第二层为红土粘土，电阻率为334 ~ 963 ω -m，厚度为1.5 ~ 10.8m。第三层为粘土/砂质破碎石英岩，为含水层单元。电阻率在71.7 ~ 498 ω -m之间，厚度在2.1 ~ 76.3 m之间。第四层为断裂/可能为新鲜基底基岩，电阻率为1879 ~ 13991.8 ω -m。因此，建议在具有低电阻率裂缝基底且厚度可观的地区进行钻孔定位。研究区垂直电测深点为地下水富集的良好含水层。
{"title":"Geoelectrical Investigation of Subsurface Structures for Mapping Groundwater Potential of Joseph Ayo Babalola University Campus Environment, Ikeji Arakeji, Osun State, Southwestern Nigeria","authors":"O. Odeyemi, O. Odeyemi, S. A. Owolabi, E. A. Mamukuyomi, R. A. Salako","doi":"10.9734/AJR2P/2019/V2I230092","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I230092","url":null,"abstract":"Owing to fast increase in number of staff and students of Joseph Ayo Babalola University, Ikeji Arakeji, Southwestern Nigeria, it is therefore very important to carry out this research in order to recommend the actual locations where boreholes can be sunk for good potential yields of groundwater when the time comes. The aim of this research is to carry out vertical electrical sounding geophysical survey at study area with a view to determining good aquifers that are good for the accumulation of groundwater. The study area is located between latitude 0820225 m to 0820345 m (UTM) Northings and longitude 717320 m to 717450 m (UTM) Eastings. Schlumberger electrode array was employed for the study using Ohmega Resistivity meter for the data acquisition. The geoelectric survey of the study area comprised of twelve vertical electrical soundings, with maximum current electrode spacing (AB) of 100 m. The modeled curves are mainly KH-type. The geoelectric sections generated from the sounding curves revealed 4 major layers earth models. The topsoil is made up of clay, clayey sand/lateritic sand with resistivity and thicknesses varying from 54.7 – 210.1ohm-m and 0.2 –0.8m respectively. The second layer is the lateritic clay with resistivities and thicknesses varying from 334 – 963ohm-m and 1.5 – 10.8m respectively. The third layer constitutes the clay / sandy fractured quartzite and it serves as the aquifer unit. The resistivity values lie between 71.7 and 498 ohm-m while the thicknesses vary from 2.1 – 76.3 m. The fourth layer is the fractured/presumably fresh basement bedrock with the resistivity varying from 1879 – 13991.8 ohm-m. Areas characterized with fractured basement of low resistivity with appreciable thickness are therefore recommended for the siting of boreholes. It is concluded that the vertical electrical sounding points of the study area are good aquifers for groundwater accumulation.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90092904","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}
Pub Date : 2019-03-12DOI: 10.9734/AJR2P/2019/V2I130091
S. Das
We have a developed and derived a formula for capacitor i.e. charge as a function of time, which is convolution operation of time varying capacity function and time-varying voltage function. This is different to the usual and conventional way of writing capacitance multiplied by voltage to get charge stored in a capacitor. This new deliberation with convolution operation works well for classical capacitors (i.e. ideal loss less capacitors), that is of a constant capacity at all frequencies, and also for a time varying capacity function given by decaying power-law: that gives the formation of a fractional capacitor. In this paper, we use this developed new charge storage expression and apply to various types of inputs excitation voltage-sinusoidal, step, ramp voltage and then analyze and interpret the results for charge stored, the current expressions, the loss-tangent and the memory effects. With this new formulation, we also evaluate impedance function of a classical capacitor as well as a fractional capacitor, and also elaborate on the Nyquist’s diagram, that is employed to study various dielectric materials via impedance spectroscopy. This new approach of charge storage concept is yet to be practically as well as theoretically applied-though some initial work has started. This paper gives a theoretical validity test i.e. analytically obtained in several applications for this new formulation, of charge storage formula. This paper will be useful in various super-capacitor studies, dielectric relaxation experiments, and impedance spectroscopy for various material developments for electrical energy storage missions; however, this concept is yet to be used to its full potential.
{"title":"Theoretical Verification of the Formula of Charge Function in Time of Capacitor (q = c*v) for Few Cases of Excitation Voltage","authors":"S. Das","doi":"10.9734/AJR2P/2019/V2I130091","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I130091","url":null,"abstract":"We have a developed and derived a formula for capacitor i.e. charge as a function of time, which is convolution operation of time varying capacity function and time-varying voltage function. This is different to the usual and conventional way of writing capacitance multiplied by voltage to get charge stored in a capacitor. This new deliberation with convolution operation works well for classical capacitors (i.e. ideal loss less capacitors), that is of a constant capacity at all frequencies, and also for a time varying capacity function given by decaying power-law: that gives the formation of a fractional capacitor. In this paper, we use this developed new charge storage expression and apply to various types of inputs excitation voltage-sinusoidal, step, ramp voltage and then analyze and interpret the results for charge stored, the current expressions, the loss-tangent and the memory effects. With this new formulation, we also evaluate impedance function of a classical capacitor as well as a fractional capacitor, and also elaborate on the Nyquist’s diagram, that is employed to study various dielectric materials via impedance spectroscopy. This new approach of charge storage concept is yet to be practically as well as theoretically applied-though some initial work has started. This paper gives a theoretical validity test i.e. analytically obtained in several applications for this new formulation, of charge storage formula. This paper will be useful in various super-capacitor studies, dielectric relaxation experiments, and impedance spectroscopy for various material developments for electrical energy storage missions; however, this concept is yet to be used to its full potential.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84772388","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}
Pub Date : 2019-02-15DOI: 10.9734/AJR2P/2019/V2I130090
O. Ajileye
The scaled-up analysis of surface refractivity over a period of 22 years (1983 – 2005) for different climatic zones in West Africa was calculated using the results of surface refractivity at 2 m, and 10 m averaged monthly and annually. The annual surface refractivity normalised value is 0.91 for Z2/Z1, 0.97 for Z3/Z1, and 0.94 for Z4/Z1 at 2 m while the normalised value of surface refractivity is 1.00 for Z2/Z1, 0.98 for Z3/Z1, and 0.96 for Z4/Z1 at 10 m. At 10 m, the value is relatively constant. The monthly variation shows that surface refractivity reduced as latitude increases in West Africa except in wet months for climatic zone 3 at 2 m and wet months in climatic zone 2 at 10 m. The wet months had a characteristic of reduction in normalised surface refractivity value with most severe reduction within latitudes 10°N and 15°N. This decrease in refractivity across the latitude translates into an increase in the velocity of terrestrial propagation across the latitude, resulting in excessive bending of electromagnetic waves toward the earth's surface, along curves with radii less than the radius of the earth.
{"title":"Scaled-up Analysis of Surface Refractivity across West Africa","authors":"O. Ajileye","doi":"10.9734/AJR2P/2019/V2I130090","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I130090","url":null,"abstract":"The scaled-up analysis of surface refractivity over a period of 22 years (1983 – 2005) for different climatic zones in West Africa was calculated using the results of surface refractivity at 2 m, and 10 m averaged monthly and annually. The annual surface refractivity normalised value is 0.91 for Z2/Z1, 0.97 for Z3/Z1, and 0.94 for Z4/Z1 at 2 m while the normalised value of surface refractivity is 1.00 for Z2/Z1, 0.98 for Z3/Z1, and 0.96 for Z4/Z1 at 10 m. At 10 m, the value is relatively constant. The monthly variation shows that surface refractivity reduced as latitude increases in West Africa except in wet months for climatic zone 3 at 2 m and wet months in climatic zone 2 at 10 m. The wet months had a characteristic of reduction in normalised surface refractivity value with most severe reduction within latitudes 10°N and 15°N. This decrease in refractivity across the latitude translates into an increase in the velocity of terrestrial propagation across the latitude, resulting in excessive bending of electromagnetic waves toward the earth's surface, along curves with radii less than the radius of the earth.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76003575","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}
Pub Date : 2019-02-01DOI: 10.9734/AJR2P/2019/V2I130087
Mohammed Ali Haimid, A. Marouf, M. Abdalla
Laser irradiation has biostimulating effect in various cell types low power laser radiation is used clinically for skin and vascular disorders. Aims: To investigate the effect of (He-Ne) laser (λ= 632nm, power=1mW) on human whole blood, after irradiated to different times from 10 min to 50 min. Study Design: Human Whole Blood Irradiated to (He-Ne) laser(λ= 632nm, power=1mW). Place and Duration of Study: Soba Hospital, Khartoum- Sudan, Institute of Laser, Sudan University of science and technology (SUST), February 2018. Methodology: Blood samples were taken from healthy volunteers; blood sample irradiated to (He-Ne) laser and control compared; FTIR and UV-Vis spectrophotometer were used to study laser radiation effect Results: FTIR spectra and UV-vis absorption spectra of blood samples are compared before and after irradiated to He-Ne laser shows increases absorption for 10, and 40 min but it decreases as the exposure time at 30,20 and 50 minutes. This fluctuation of light absorption is known as a biphasic response. FTIR spectra of non exposed blood showed the peaks due to O-H (free group), C=O (amide I group), N=O (nitro group), and C-H (aromatic group). N-H (Amino acid (amide II). For all exposure time He-Ne laser (λ= 632nm, power=1mW) irradiation, showed significant changes. Increased in transmittance at different exposure time for all groups (C=O, O-H, N=O, C-O & C-H, N-H) and indicates significant decreasing in their concentration. Conclusion: The laser radiation causes changes in the structure and conformational changes in the polypeptide and absorption of blood samples decreased due to increasing ligand electronegativity.
{"title":"In vitro UV-Visible and FTIR Spectroscopy Study of Low Power He-Ne Laser Irradiation on Human Blood","authors":"Mohammed Ali Haimid, A. Marouf, M. Abdalla","doi":"10.9734/AJR2P/2019/V2I130087","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I130087","url":null,"abstract":"Laser irradiation has biostimulating effect in various cell types low power laser radiation is used clinically for skin and vascular disorders. \u0000Aims: To investigate the effect of (He-Ne) laser (λ= 632nm, power=1mW) on human whole blood, after irradiated to different times from 10 min to 50 min. \u0000Study Design: Human Whole Blood Irradiated to (He-Ne) laser(λ= 632nm, power=1mW). \u0000Place and Duration of Study: Soba Hospital, Khartoum- Sudan, Institute of Laser, Sudan University of science and technology (SUST), February 2018. \u0000Methodology: Blood samples were taken from healthy volunteers; blood sample irradiated to (He-Ne) laser and control compared; FTIR and UV-Vis spectrophotometer were used to study laser radiation effect \u0000Results: FTIR spectra and UV-vis absorption spectra of blood samples are compared before and after irradiated to He-Ne laser shows increases absorption for 10, and 40 min but it decreases as the exposure time at 30,20 and 50 minutes. This fluctuation of light absorption is known as a biphasic response. \u0000FTIR spectra of non exposed blood showed the peaks due to O-H (free group), C=O (amide I group), N=O (nitro group), and C-H (aromatic group). N-H (Amino acid (amide II). For all exposure time He-Ne laser (λ= 632nm, power=1mW) irradiation, showed significant changes. Increased in transmittance at different exposure time for all groups (C=O, O-H, N=O, C-O & C-H, N-H) and indicates significant decreasing in their concentration. \u0000Conclusion: The laser radiation causes changes in the structure and conformational changes in the polypeptide and absorption of blood samples decreased due to increasing ligand electronegativity.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90716858","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}
Pub Date : 2019-01-23DOI: 10.9734/AJR2P/2019/V2I129801
T. Natsuki, Jun Natsuki
In this study, an analytical model is proposed to investigate the sound transmission loss through multi-walled plates with air layers or decompression air layers, under the diffuse incidence field. Using the present approach, the influences of various parameters, such as the wall thickness, the decompressed air and the thickness of air space, on the sound transmission loss through are simulated and discussed in detail. It is seen that, due to the wave frequency of mass-air-mass resonance between double-walled glass plates, the sound transmission loss of the plates can be improved at low frequency range. The sound transmission loss tends to increase with decreasing air pressure because the sound is not transmitted through vacuum space. The design method can be used to investigate the effect of various geometric and material parameters on the sound transmission loss. The advantage of the simulation procedure is easily used for designing the layer structures with different parameter to improve the sound insulation effect.
{"title":"A Theoretical Investigation on Sound Transmission Loss through Multi-walled Plates with Air Space","authors":"T. Natsuki, Jun Natsuki","doi":"10.9734/AJR2P/2019/V2I129801","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I129801","url":null,"abstract":"In this study, an analytical model is proposed to investigate the sound transmission loss through multi-walled plates with air layers or decompression air layers, under the diffuse incidence field. Using the present approach, the influences of various parameters, such as the wall thickness, the decompressed air and the thickness of air space, on the sound transmission loss through are simulated and discussed in detail. It is seen that, due to the wave frequency of mass-air-mass resonance between double-walled glass plates, the sound transmission loss of the plates can be improved at low frequency range. The sound transmission loss tends to increase with decreasing air pressure because the sound is not transmitted through vacuum space. The design method can be used to investigate the effect of various geometric and material parameters on the sound transmission loss. The advantage of the simulation procedure is easily used for designing the layer structures with different parameter to improve the sound insulation effect.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76712839","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}
Pub Date : 2019-01-22DOI: 10.9734/AJR2P/2019/V2I129799
D. Radjenović, Biljana Stojičić, B. Radjenovic, M. Radmilović-Radjenović
The propagation of light through powders differs significantly from the propagation of light in a homogeneous material, since the light scatters off points in its path. Colors of powders are related to the fineness of the powder, when the powder is illuminated with white light. As Fourier transform infrared has become more common, the diffuse reflection method has become widely used. Diffuse reflectance is an excellent sampling tool for powdered materials.
{"title":"Diffuse Reflectance of Powders","authors":"D. Radjenović, Biljana Stojičić, B. Radjenovic, M. Radmilović-Radjenović","doi":"10.9734/AJR2P/2019/V2I129799","DOIUrl":"https://doi.org/10.9734/AJR2P/2019/V2I129799","url":null,"abstract":"The propagation of light through powders differs significantly from the propagation of light in a homogeneous material, since the light scatters off points in its path. Colors of powders are related to the fineness of the powder, when the powder is illuminated with white light. As Fourier transform infrared has become more common, the diffuse reflection method has become widely used. Diffuse reflectance is an excellent sampling tool for powdered materials.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86697027","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}
Pub Date : 2019-01-01DOI: 10.9734/ajr2p/2019/v2i430106
Marco O. O. Pellegrini
Aims: Temperature changes in the air, land and ocean together with the hydrological cycle and changing precipitation patterns are some of the topics assessed by scientist all over the world in order to study the signals of a changing climate. As the impacts of climate change are expected to be noticed both at global and local scale, a dataset of real-world precipitation and average air temperature at regional scale spanning a period of 19 years is provided and described in the present paper. Study Design: Starting from cumulative precipitation and average air temperature data, a set of annual and monthly spatially distributed maps have been generated in order to provide the scientific community with regional-scale data related to a temperate climate area. Place and Duration of Study: Marche Region, East-Central Italy, between January 2000 and December 2018. Methodology: We used in-situ rainfall and air temperature data provided by Marche Region (Italy) Security and Civil Protection Department in the framework of the regional meteorological and hydrological monitoring network (SIRMIP). SIRMIP network is composed of a mechanical and a telemetric sensing system. SIRMIP network consists of, among others, 230 rain gauges and 137 thermometers. Rainfall and air temperature data have been interpolated on a 1 km-resolution regular grid using Inverse Distance Weighting (IDW) spatial interpolation. Temperature data were further processed through a linear regression using elevation from a high-resolution digital terrain model (DTM). Results: The generated dataset described in this paper consists of 228 monthly- and 19 annual-spatially distributed maps of rainfall and air temperature.
{"title":"A 19-Years Period (2000-2018) Dataset of Annual and Monthly Spatial Distribution of Rainfall and Average Air Temperature in a Temperate Region for Climate Change Studies","authors":"Marco O. O. Pellegrini","doi":"10.9734/ajr2p/2019/v2i430106","DOIUrl":"https://doi.org/10.9734/ajr2p/2019/v2i430106","url":null,"abstract":"Aims: Temperature changes in the air, land and ocean together with the hydrological cycle and changing precipitation patterns are some of the topics assessed by scientist all over the world in order to study the signals of a changing climate. As the impacts of climate change are expected to be noticed both at global and local scale, a dataset of real-world precipitation and average air temperature at regional scale spanning a period of 19 years is provided and described in the present paper. Study Design: Starting from cumulative precipitation and average air temperature data, a set of annual and monthly spatially distributed maps have been generated in order to provide the scientific community with regional-scale data related to a temperate climate area. Place and Duration of Study: Marche Region, East-Central Italy, between January 2000 and December 2018. Methodology: We used in-situ rainfall and air temperature data provided by Marche Region (Italy) Security and Civil Protection Department in the framework of the regional meteorological and hydrological monitoring network (SIRMIP). SIRMIP network is composed of a mechanical and a telemetric sensing system. SIRMIP network consists of, among others, 230 rain gauges and 137 thermometers. Rainfall and air temperature data have been interpolated on a 1 km-resolution regular grid using Inverse Distance Weighting (IDW) spatial interpolation. Temperature data were further processed through a linear regression using elevation from a high-resolution digital terrain model (DTM). Results: The generated dataset described in this paper consists of 228 monthly- and 19 annual-spatially distributed maps of rainfall and air temperature.","PeriodicalId":8529,"journal":{"name":"Asian Journal of Research and Reviews in Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81032077","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}
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