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Vertical Single-Effect Diffusion Solar Still Coupled with a Tilted Wick Still: An Experimental Study 垂直单效应扩散太阳蒸馏器与倾斜灯芯蒸馏器耦合的实验研究
Advances in Physics Theories and Applications Pub Date : 2021-08-01 DOI: 10.7176/apta/84-01
Mohd Zaheen Khan
{"title":"Vertical Single-Effect Diffusion Solar Still Coupled with a Tilted Wick Still: An Experimental Study","authors":"Mohd Zaheen Khan","doi":"10.7176/apta/84-01","DOIUrl":"https://doi.org/10.7176/apta/84-01","url":null,"abstract":"A single-effect diffusion still, instead of a multiple-effect diffusion (MED) still, combined with a tilted wick (TW) still was investigated experimentally under actual weather conditions to investigate whether the natural convection can transport the vapor from the TW still to an MED still adequately. It was found that the single-effect still can be heated by vapor from the TW still and solar radiation absorbed on the single-effect still. From the experiments in summer and autumn, it was found that a MED still can be heated in both seasons whether the MED still absorbs solar radiation directly or not. The experimental results agreed with the calculation results. The total daily amount of distillate, Σmd,total, did not correlate with the daily horizontal solar radiation, ΣGday, but strongly correlated with daily solar radiation incident on the still, ΣGstill. The maximum of Σmd,total obtained in experiments was about 4.88 kg/m day when ΣGday and ΣGstill were 13.6 and 18.4 MJ/m day, respectively","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84440081","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
Creation of Two Charginos and Neutralino Via Different Propagators 通过不同的传播子产生两个带电子和中性子
Advances in Physics Theories and Applications Pub Date : 2021-08-01 DOI: 10.7176/apta/84-02
H. Zainab.A., A. Asmaa.A., M. M. Ahmed
{"title":"Creation of Two Charginos and Neutralino Via Different Propagators","authors":"H. Zainab.A., A. Asmaa.A., M. M. Ahmed","doi":"10.7176/apta/84-02","DOIUrl":"https://doi.org/10.7176/apta/84-02","url":null,"abstract":"We investigated the creation of two Charginos ( (cid:1)(cid:2) ± ) and neutralino ( (cid:1)(cid:2) (cid:4) ) owing to electron-positron annihilation via the process (cid:5) (cid:6) (cid:7)(cid:8) (cid:9) (cid:10) + (cid:5) (cid:12) (cid:7)(cid:8) (cid:13) (cid:10) → (cid:1)(cid:2) (cid:15)(cid:6) (cid:7)(cid:8) (cid:16) (cid:10) + (cid:1)(cid:2) (cid:17)(cid:12) (cid:7)(cid:8) (cid:18) (cid:10) + (cid:1)(cid:2) ℓ° (cid:7)(cid:8) (cid:21) (cid:10) and estimated the cross section for this interaction in the Minimal Supersymmetric Standard Model (MSSM). There are three gatherings of Feynman graphs which taken by the sorts of the propagators. Group (I) when (cid:1)(cid:2) and (cid:4) boson are propagators, Group (II) when (cid:1)(cid:2) (cid:4) and h (cid:4) (lighter Higgs boson) propagators and Group (III) (cid:1)(cid:2) (cid:4) and H (cid:4) Higgs boson) propagators, (cid:10) in group III At S interval (1000- 2100) Gev, the best value of σ is (cid:7) 0.072 (cid:10) Pb in-group (I). When masses of Charginos are m /0 12 = 700 GeV , m /0 67 = 700GeV and mass of neutralino is m 8(cid:2) ℓ9 = 800 GeV","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81247950","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
Scattering Effects of Residential Trees on Very Hugh Frequency Radio Wave Propagation 住宅树木对甚高频无线电波传播的散射效应
Advances in Physics Theories and Applications Pub Date : 2020-12-01 DOI: 10.7176/apta/83-11
Adewumi Adebayo Segun, Adewumi Hope Kofoworola, F. Chizea, Ayantunji Gbenro, Benjamin, Ajani Sunday Adegbenro
{"title":"Scattering Effects of Residential Trees on Very Hugh Frequency Radio Wave Propagation","authors":"Adewumi Adebayo Segun, Adewumi Hope Kofoworola, F. Chizea, Ayantunji Gbenro, Benjamin, Ajani Sunday Adegbenro","doi":"10.7176/apta/83-11","DOIUrl":"https://doi.org/10.7176/apta/83-11","url":null,"abstract":"Modeling of attenuation of Very High Frequency radio signal in residential environment can be very tedious as the channels are rarely characterized by vegetation of the same variety. This work focus on path loss measurement and attenuation modeling of the coherent scattered field intensity of VHF as it propagates through Mango and Jathropha trees. The two separate trees were illuminated uniformly with 2.15dBi dipole antenna connected to 60W transmitter while 1.7dBi short dipole connected to GSP-730 Spectrum Analyzer was used for reception. Path loss due to each canopy were estimated relative to the scattering angles. Dry-matter fraction of the leave were determined using sensitive weigh balance and corresponding effective dielectric properties of the leaves and branches peculiar to each tree were estimated using semi-empirical formula. Specific attenuation models were developed separately for the two trees relative to dielectric properties of each tree leaves and branches. The results show that path loss due to single Mango tree canopy ranges from 100dB to 140dB and that of Jathropha ranges from 95dB to 135dB. The results also show that total specific attenuation of the two trees depends on frequency, wavelength and dielectric properties of the canopies constituents","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72856536","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
Radiological Hazard Indices in Federal University of Lafia (FULafia), Nasarawa State. 纳萨拉瓦州拉菲亚联邦大学(FULafia)的辐射危害指数。
Advances in Physics Theories and Applications Pub Date : 2020-11-01 DOI: 10.7176/apta/83-10
Bello A. Aisha, Zahra Liman, Olorunsola Abel Keneth Ogbo, A. Hassan
{"title":"Radiological Hazard Indices in Federal University of Lafia (FULafia), Nasarawa State.","authors":"Bello A. Aisha, Zahra Liman, Olorunsola Abel Keneth Ogbo, A. Hassan","doi":"10.7176/apta/83-10","DOIUrl":"https://doi.org/10.7176/apta/83-10","url":null,"abstract":"An assessment of radiological hazard indices from background radiation exposure was carried out in FULafia using a Mobile GPS for locational coordinates and a Ludlum radiation meter. Holding the survey meter 1 m above the ground level in the exposure mode, a total of 71 sample points comprising of indoor and outdoor locations in Takeoff site (TS) and permanent site (PS) of the University was used for exposure measurement. Result showed that the indoor and outdoor mean absorbed dose is (136.51±7.46) nGyh -1 and (131.26 ± 2.09) nGyh -1 respectively. The total indoor and outdoor average values for annual effective absorbed dose equivalent (AEDE), Excess lifetime cancer risk (ELCR) and AEDE to organ was found to be (0.81 ± 0.02) mSvy -1 , (2.84 ± 0.07) x 10 -3 , and (0.35 ± 0.01) mSvy -1 . These values when compared with UNSCEAR limit of radiological indices for the general public where higher but lower when compared with ICRP limit of 1 mSvy -1 thus; there is no health concern due to the exposure from background ionizing radiation in FULafia, Nasarawa state.","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86064479","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
DIFFERENTIAL CROSS SECTIONS FOR ELASTIC ELECTRON SCATTERING BY A CALCIUM ATOM AT LOW ENERGY RANGE. 钙原子在低能区弹性电子散射的微分截面。
Advances in Physics Theories and Applications Pub Date : 2020-09-01 DOI: 10.7176/apta/83-09
P. Kinyanjui, W. Ndeke, J. Okumu, C. Singh
{"title":"DIFFERENTIAL CROSS SECTIONS FOR ELASTIC ELECTRON SCATTERING BY A CALCIUM ATOM AT LOW ENERGY RANGE.","authors":"P. Kinyanjui, W. Ndeke, J. Okumu, C. Singh","doi":"10.7176/apta/83-09","DOIUrl":"https://doi.org/10.7176/apta/83-09","url":null,"abstract":"In this study the distorted wave method was applied in calculation of the differential cross sections (DCS) for elastic scattering of electron by a calcium atom at electron impact energies of 10, 15, 20, and 40 eV. At lower incident energies, 10, 15, and 20 eV the present DCS results are not in good agreement with other theoretical and experimental results. However, at 40 eV the present DCS results are in good agreement with other theoretical and experimental results. Key words : Cross-sections, distortion potential, distorted wave, static potential and spherical harmonics. DOI : 10.7176/APTA/83-09 Publication date: September 29 th 2020","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"471 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74413927","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 Radius of Electron 电子半径
Advances in Physics Theories and Applications Pub Date : 2020-04-01 DOI: 10.7176/apta/83-07
E. David
{"title":"The Radius of Electron","authors":"E. David","doi":"10.7176/apta/83-07","DOIUrl":"https://doi.org/10.7176/apta/83-07","url":null,"abstract":": One electron inside neutron's system divides its 2.2 Mev energy between its proton in this system and another proton forming deuteron nucleus, and two electrons with negative and positive charges forming gamma ray that separated the neutron from the proton in deuteron nucleus experimentally. Using our universal constant U, we can determine 1-the radius of neutron nucleus in the first state as the basic nuclear radius in the universe according to the well known historical result of Rutherford, and 2-Determine, for the first time, the radius of the electron in the second state.","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89550477","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
Estimation of land surface Temperature of Maiduguri Metropolitan Area: A Case Study of Jere & some part of Mafa using Landsat 8 Operational Land Image (OLI) 基于Landsat 8 Operational land Image (OLI)的迈杜古里大都市区地表温度估算——以Jere和马法部分地区为例
Advances in Physics Theories and Applications Pub Date : 2020-03-01 DOI: 10.7176/apta/83-06
M. K. Salihu, A. Aliyu, A. Hayatu, R. O. Amusat, Samaila Hassan
{"title":"Estimation of land surface Temperature of Maiduguri Metropolitan Area: A Case Study of Jere & some part of Mafa using Landsat 8 Operational Land Image (OLI)","authors":"M. K. Salihu, A. Aliyu, A. Hayatu, R. O. Amusat, Samaila Hassan","doi":"10.7176/apta/83-06","DOIUrl":"https://doi.org/10.7176/apta/83-06","url":null,"abstract":"Estimation of land surface Temperature of Maiduguri Metropolitan Area: A Case Study of Jere & some part of Mafa using Landsat 8 Operational Land Image (OLI) the research revealedmean solar radiance as 10.54 W/m 2 /str/μm the calculated minimum and maximum NDVI values are respectively -0.01674 and 0.5489, used to obtain proportion to vegetation which is then used to determine the emmissivity of the area having minimum emmissivity of 0.986 and maximum of 0.99, the minimum and maximum land surface temperature of Maiduguri Metropolitan areas are respectively 41.16 o C and 26.11 o C. KEY WORDS :- Landsat 8 satellite images, Temperature, Solar Radiance and Emmissivity DOI : 10.7176/APTA/83-06 Publication date: March 31 st , 2020","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75871765","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
Interactions of Axion Photons in Magnetised Media 磁化介质中轴子光子的相互作用
Advances in Physics Theories and Applications Pub Date : 2020-02-01 DOI: 10.7176/apta/83-01
E. Umoren, J. Atat, Augustine A. Umoh, I. Essien, Cyril C. Umoren, A. Antia
{"title":"Interactions of Axion Photons in Magnetised Media","authors":"E. Umoren, J. Atat, Augustine A. Umoh, I. Essien, Cyril C. Umoren, A. Antia","doi":"10.7176/apta/83-01","DOIUrl":"https://doi.org/10.7176/apta/83-01","url":null,"abstract":"We have compared between the standard model and generational model of particle physics. By means of a special Lagrangian function we consider the interaction of photon axions in both magnetic field and magnetic medium. We also present a polynomial in powers of the external magnetic field with even and odd powers .... DOI : 10.7176/APTA/83-01 Publication date: February 29 th 2020","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"333 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74048840","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 Study on Effect of Carbon© on the Electronic Structure of MgBXC(x = 1, 2) 碳©对MgBXC(x = 1,2)电子结构影响的研究
Advances in Physics Theories and Applications Pub Date : 2020-02-01 DOI: 10.7176/apta/83-03
M. A. Afrassa
{"title":"The Study on Effect of Carbon© on the Electronic Structure of MgBXC(x = 1, 2)","authors":"M. A. Afrassa","doi":"10.7176/apta/83-03","DOIUrl":"https://doi.org/10.7176/apta/83-03","url":null,"abstract":"In this work first principle study on electronic structure calculations for MgBC, and MgB 2 C is presented. The density functional theory (DFT) as implemented in Quantum-ESPRESSO was used. The band structure and density of state (DOS) is compared with the already reported MgB 2 . It is clearly observed that the presence of Carbon in both compounds change the Fermi level and the hole bands. In MgB 2 C the Fermi level is higher than MgBC that results in suppression of Tc in MgB 2 C. In MgBC the hole band shifted up from gamma to X direction and this may improve superconductivity of the material. Comparison of the DOS at the Fermi level reveals that  MgBC has the highest value (0.9424 state/cell/ev). Using reasonable approximations, the calculated Tc values are, 27.07k and 41.09k for MgB2C and MgBC respectively. This suggests that Carbon(C) has a better contribution than Boron(B) and MgBC is a good candidate for high Tc. Keywords : Superconductivity, Band structure, Density of state(DOS), Density Functional theory(DFT) DOI : 10.7176/APTA/83-03 Publication date: February 29 th 2020","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75960166","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 Application of 4D Seismic in Niger Delta Basin: A Review 四维地震在尼日尔三角洲盆地的应用综述
Advances in Physics Theories and Applications Pub Date : 2020-02-01 DOI: 10.7176/apta/83-05
Ayorinde Janet Olaide, Ehinola Olugbenga, Durogbitan A Abimbola
{"title":"The Application of 4D Seismic in Niger Delta Basin: A Review","authors":"Ayorinde Janet Olaide, Ehinola Olugbenga, Durogbitan A Abimbola","doi":"10.7176/apta/83-05","DOIUrl":"https://doi.org/10.7176/apta/83-05","url":null,"abstract":"Time-lapse seismic also known as 4D seismic is one of the advanced techniques employed in the oil and gas industry for petroleum production management and monitoring for over 20years. It involves carrying out two or more 3D seismic at different calendar times, before and after production over the same reservoir. We present advances in Time Lapse 3D seismic (also known as 4D seismic) and its application in the Niger Delta basin of Nigeria. Over the years, the technique has been used in Niger Delta to understand reservoir drainage performance, enable better well placement, identifying bypassed oil, detecting fluid communication, understanding of internal architecture of the reservoirs, and locating infill wells for future re-development. 4D seismic has demonstrated its potential and it is fast becoming a standard tool in the oil companies. DOI : 10.7176/APTA/83-05 Publication date: February 29 th 2020","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77604144","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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