J. HaiderAdawiya, R. JaburAkram, SalameChafic-Touma, VokasGeorgios
{"title":"Preface: Technologies and Materials for Renewable Energy, Environment and Sustainability TMREES19 International Conference","authors":"J. HaiderAdawiya, R. JaburAkram, SalameChafic-Touma, VokasGeorgios","doi":"10.1063/1.5138486","DOIUrl":"https://doi.org/10.1063/1.5138486","url":null,"abstract":"","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121096132","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}
During the previous years, utilization of natural bio-fruit waste has received way more attention than ever before, this because the low cost of bio-fibers and to improvement some properties of polymer composite and also to reduce the environmental west. Egg shell powder, with grain size (100μm) was added with 5,10,15,20 and 25% weight fraction to epoxy to improve some mechanical properties like: hardness, impact, compression, tensile and bending.
{"title":"Improvement of some mechanical properties of epoxy using uncarbonized and carbonized eggshell powder","authors":"H. K. Hameed, W. H. Jassim","doi":"10.1063/1.5138512","DOIUrl":"https://doi.org/10.1063/1.5138512","url":null,"abstract":"During the previous years, utilization of natural bio-fruit waste has received way more attention than ever before, this because the low cost of bio-fibers and to improvement some properties of polymer composite and also to reduce the environmental west. Egg shell powder, with grain size (100μm) was added with 5,10,15,20 and 25% weight fraction to epoxy to improve some mechanical properties like: hardness, impact, compression, tensile and bending.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126478167","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}
This paper presents a comparison between two photovoltaic water pumping system driven by a separately excited DC motor (DCM) and an induction motor (IM), via a DC/DC buck-boost converter coupled to a centrifugal pump. The two systems are optimised by a P&O MPPT algorithm, which aims to the maximisation of the global efficiency, will lead consequently to maximize the drive speed and the water discharge rate of the coupled centrifugal pump. Each component of the PV water pumping system is studied and analyzed in MATLAB/SIMULINK. The two systems are then compared in terms of efficiency and quantity of water pumped per day. The study concludes that the IM-driven PV system yields highly favorable results and requires less maintenance compared with other systems.This paper presents a comparison between two photovoltaic water pumping system driven by a separately excited DC motor (DCM) and an induction motor (IM), via a DC/DC buck-boost converter coupled to a centrifugal pump. The two systems are optimised by a P&O MPPT algorithm, which aims to the maximisation of the global efficiency, will lead consequently to maximize the drive speed and the water discharge rate of the coupled centrifugal pump. Each component of the PV water pumping system is studied and analyzed in MATLAB/SIMULINK. The two systems are then compared in terms of efficiency and quantity of water pumped per day. The study concludes that the IM-driven PV system yields highly favorable results and requires less maintenance compared with other systems.
{"title":"Comparative study on photovoltaic water pumping systems driven by direct current motor (DCM) and induction motor (IM) optimized with P&O control","authors":"Bouchakour Abdelhak, Borni Abdelhalim, Boukebbous Seif Eddine, Zaghba Layachi, Fezzani Amor, M. Brahami","doi":"10.1063/1.5138488","DOIUrl":"https://doi.org/10.1063/1.5138488","url":null,"abstract":"This paper presents a comparison between two photovoltaic water pumping system driven by a separately excited DC motor (DCM) and an induction motor (IM), via a DC/DC buck-boost converter coupled to a centrifugal pump. The two systems are optimised by a P&O MPPT algorithm, which aims to the maximisation of the global efficiency, will lead consequently to maximize the drive speed and the water discharge rate of the coupled centrifugal pump. Each component of the PV water pumping system is studied and analyzed in MATLAB/SIMULINK. The two systems are then compared in terms of efficiency and quantity of water pumped per day. The study concludes that the IM-driven PV system yields highly favorable results and requires less maintenance compared with other systems.This paper presents a comparison between two photovoltaic water pumping system driven by a separately excited DC motor (DCM) and an induction motor (IM), via a DC/DC buck-boost converter coupled to a centrifugal pump. The two systems are optimised by a P&O MPPT algorithm, which aims to the maximisation of the global efficiency, will lead consequently to maximize the drive speed and the water discharge rate of the coupled centrifugal pump. Each component of the PV water pumping system is studied and analyzed in MATLAB/SIMULINK. The two systems are then compared in terms of efficiency and quantity of water pumped per day. The study concludes that the IM-driven PV system yields highly favorable results and requires less maintenance compared with other systems.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130969737","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}
This studied is directed to water treatment by using developed self-assembly way by prepared a new nanomixture consist of three nanomaterials. Fe3O4−GO-ZnO nanomixture catalyst showed excellent synergy between photocatalysis and Fenton-like reactions. The catalyst prepared demonstrated efficient and reproducible catalytic activities for water treatment. It takes only a few minutes to degrade methylene blue dye (MB) completely, from its solution.The prepared catalyst can be easily extracted from solution and repeatedly used with little loss of catalytic activity.
{"title":"Preparation and characterization of a new nano mixture, and its application as photocatalysis in self-assembly method for water treatment","authors":"Yosra M. Sadiq, E. E. Al-Abodi","doi":"10.1063/1.5138528","DOIUrl":"https://doi.org/10.1063/1.5138528","url":null,"abstract":"This studied is directed to water treatment by using developed self-assembly way by prepared a new nanomixture consist of three nanomaterials. Fe3O4−GO-ZnO nanomixture catalyst showed excellent synergy between photocatalysis and Fenton-like reactions. The catalyst prepared demonstrated efficient and reproducible catalytic activities for water treatment. It takes only a few minutes to degrade methylene blue dye (MB) completely, from its solution.The prepared catalyst can be easily extracted from solution and repeatedly used with little loss of catalytic activity.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"21 1-3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133812058","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}
Radiation protection principles may be specified within three parameters, limiting time, distance and shielding, the aim of this work is to make a shield for neutrons that we got from Am- Be source, the neutrons will be fast with energy of (5MeV), researchers designed exposure system that contain the source and the shield to be tested within three stages. The first stage was attenuated fast neutrons by composite material prepared from Epoxy as a matrix reinforced by Boron with different concentrations (0,5%,10%,12% and 15%) with thickness of (0.5)cm, then concentration 0f 12% was selected for test with different thickness of (0.5,1,1.5,2 and 2.5)cm, then 2cm was chose to start the second stage for the capture of thermal neutrons. The shield for thermal neutrons made from epoxy reinforced by cadmium at different concentration (0,10%,15%,20% and 25%) with thickness of (0.5)cm, then concentration 15% was chose to test with thickness of (0.5,1,1.5,2and 2.5)cm, the thickness of (1)cm. Finally a gamma shield made from Epoxy reinforced by lead with concentration of (0,10%,15%,20%and 25%) with thickness of (0.5)cm, then concentration 15% was choose to test with thickness of (0.5,1,1.5,2and 2.5)cm, the concentration of 15% with thickness of (1)cm was selected. So the shield is constructed in 3 layers of reinforced with Epoxy by Boron, Cadmium and Lead respectively, The linear absorption coefficient of neutrons for the Boron composite was 0.4212cm−1, for the composite cadmium was 0.1526cm−1 and for the lead composite was 0.126cm−1. The results show a good agreement with published data.Radiation protection principles may be specified within three parameters, limiting time, distance and shielding, the aim of this work is to make a shield for neutrons that we got from Am- Be source, the neutrons will be fast with energy of (5MeV), researchers designed exposure system that contain the source and the shield to be tested within three stages. The first stage was attenuated fast neutrons by composite material prepared from Epoxy as a matrix reinforced by Boron with different concentrations (0,5%,10%,12% and 15%) with thickness of (0.5)cm, then concentration 0f 12% was selected for test with different thickness of (0.5,1,1.5,2 and 2.5)cm, then 2cm was chose to start the second stage for the capture of thermal neutrons. The shield for thermal neutrons made from epoxy reinforced by cadmium at different concentration (0,10%,15%,20% and 25%) with thickness of (0.5)cm, then concentration 15% was chose to test with thickness of (0.5,1,1.5,2and 2.5)cm, the thickness of (1)cm. Finally a gamma shield ma...
{"title":"Design and manufacture of neutrons shield from composite materials","authors":"M. Ibrahim, K. Mahdi","doi":"10.1063/1.5138533","DOIUrl":"https://doi.org/10.1063/1.5138533","url":null,"abstract":"Radiation protection principles may be specified within three parameters, limiting time, distance and shielding, the aim of this work is to make a shield for neutrons that we got from Am- Be source, the neutrons will be fast with energy of (5MeV), researchers designed exposure system that contain the source and the shield to be tested within three stages. The first stage was attenuated fast neutrons by composite material prepared from Epoxy as a matrix reinforced by Boron with different concentrations (0,5%,10%,12% and 15%) with thickness of (0.5)cm, then concentration 0f 12% was selected for test with different thickness of (0.5,1,1.5,2 and 2.5)cm, then 2cm was chose to start the second stage for the capture of thermal neutrons. The shield for thermal neutrons made from epoxy reinforced by cadmium at different concentration (0,10%,15%,20% and 25%) with thickness of (0.5)cm, then concentration 15% was chose to test with thickness of (0.5,1,1.5,2and 2.5)cm, the thickness of (1)cm. Finally a gamma shield made from Epoxy reinforced by lead with concentration of (0,10%,15%,20%and 25%) with thickness of (0.5)cm, then concentration 15% was choose to test with thickness of (0.5,1,1.5,2and 2.5)cm, the concentration of 15% with thickness of (1)cm was selected. So the shield is constructed in 3 layers of reinforced with Epoxy by Boron, Cadmium and Lead respectively, The linear absorption coefficient of neutrons for the Boron composite was 0.4212cm−1, for the composite cadmium was 0.1526cm−1 and for the lead composite was 0.126cm−1. The results show a good agreement with published data.Radiation protection principles may be specified within three parameters, limiting time, distance and shielding, the aim of this work is to make a shield for neutrons that we got from Am- Be source, the neutrons will be fast with energy of (5MeV), researchers designed exposure system that contain the source and the shield to be tested within three stages. The first stage was attenuated fast neutrons by composite material prepared from Epoxy as a matrix reinforced by Boron with different concentrations (0,5%,10%,12% and 15%) with thickness of (0.5)cm, then concentration 0f 12% was selected for test with different thickness of (0.5,1,1.5,2 and 2.5)cm, then 2cm was chose to start the second stage for the capture of thermal neutrons. The shield for thermal neutrons made from epoxy reinforced by cadmium at different concentration (0,10%,15%,20% and 25%) with thickness of (0.5)cm, then concentration 15% was chose to test with thickness of (0.5,1,1.5,2and 2.5)cm, the thickness of (1)cm. Finally a gamma shield ma...","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127770899","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}
Pyrolysis has been considered a method for recovering the power from combined micro alga bio mass here, next executing heat probe of or involving sound waves with a frequency above the upper limit of human hearing as a pretreatment to increase the bio-crude yield. Pyrolysis of mixed-microalgae was carried out in a batch reactor made up of steel at a temperature range 350-600 C°, nitrogen gas was used as sweep gas for maintaining oxygen free atmosphere in the pyrolysis. The results show that the using ultrasonic probe for both frequency 60 &90 KHz increase the bio-crude yield from 50.72 to 44.13 and 44.83 % respectively at 550C°. The thermal degradation temperature of microalgae are studied using TGA. Also the results show that the ash content after applying ultrasonic sound as a pretreatment for both frequency 60 &90 KHz were reduced from 7.21 to 4.83 and 4.21 % respectively. The aim of the work was to study the effect of using ultrasound for different frequency on algae pyrolysis as a pretreatment steps.
{"title":"Effect of ultrasonic pretreatment on pyrolysis of microalgae","authors":"Ruaa O. Taha, A. H. Shaban","doi":"10.1063/1.5138513","DOIUrl":"https://doi.org/10.1063/1.5138513","url":null,"abstract":"Pyrolysis has been considered a method for recovering the power from combined micro alga bio mass here, next executing heat probe of or involving sound waves with a frequency above the upper limit of human hearing as a pretreatment to increase the bio-crude yield. Pyrolysis of mixed-microalgae was carried out in a batch reactor made up of steel at a temperature range 350-600 C°, nitrogen gas was used as sweep gas for maintaining oxygen free atmosphere in the pyrolysis. The results show that the using ultrasonic probe for both frequency 60 &90 KHz increase the bio-crude yield from 50.72 to 44.13 and 44.83 % respectively at 550C°. The thermal degradation temperature of microalgae are studied using TGA. Also the results show that the ash content after applying ultrasonic sound as a pretreatment for both frequency 60 &90 KHz were reduced from 7.21 to 4.83 and 4.21 % respectively. The aim of the work was to study the effect of using ultrasound for different frequency on algae pyrolysis as a pretreatment steps.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115441804","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}
Nowadays the photonics will be the stage of all-optical photonic applications. Photonic devices with develop to light controlling with light. Natural dyes are attractive photonic media and subject to investigate in the applications due to the linear and nonlinear optical response. An optical pump-probe technique was presented to demonstrate the possibility of realizing the all-photonic switching. Two overlapping laser beams are used for this purpose, due to which a low-power beam passing collinear to a high-power laser beam will undergo cross phase modulation and thereby distort the spatial profile. Natural organic dyes extracted from plants in different method, such as, beet root, blackberry and cherry possessing large optical nonlinearity were prepared in ethylene glycol was used as solvent. Optical properties was performed to characterize the prepared the samples. Based on the optical nonlinear response, an interesting of figures of merit was calculated to assess the natural dyes for presented device. The results showed that the blackberry and beet root natural dyes, respectively, for design of all-photonic switches indicates that 84 and 80 % modulation at switching response time of 37 and 13 ms can be achieved with a control pump laser beam of 10 mW. These dyes are a precursor for developing ultra-photonic switches and in the development for application in solar cell devices.
{"title":"Natural dyes extracted from plants and their application to all-photonic devices","authors":"M. A. Rahma, H. Saadon","doi":"10.1063/1.5138517","DOIUrl":"https://doi.org/10.1063/1.5138517","url":null,"abstract":"Nowadays the photonics will be the stage of all-optical photonic applications. Photonic devices with develop to light controlling with light. Natural dyes are attractive photonic media and subject to investigate in the applications due to the linear and nonlinear optical response. An optical pump-probe technique was presented to demonstrate the possibility of realizing the all-photonic switching. Two overlapping laser beams are used for this purpose, due to which a low-power beam passing collinear to a high-power laser beam will undergo cross phase modulation and thereby distort the spatial profile. Natural organic dyes extracted from plants in different method, such as, beet root, blackberry and cherry possessing large optical nonlinearity were prepared in ethylene glycol was used as solvent. Optical properties was performed to characterize the prepared the samples. Based on the optical nonlinear response, an interesting of figures of merit was calculated to assess the natural dyes for presented device. The results showed that the blackberry and beet root natural dyes, respectively, for design of all-photonic switches indicates that 84 and 80 % modulation at switching response time of 37 and 13 ms can be achieved with a control pump laser beam of 10 mW. These dyes are a precursor for developing ultra-photonic switches and in the development for application in solar cell devices.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127536723","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}
Electrospun technique used to prepare PVA polymer with (2, 4, 6, 8 and 10) CuCl2 wt.% nanofibers membarance as thin films conductive polymers, morphology and average fibers diameters measurement statically by Electron microscopic image, which obtain (115 nm) as average diameter of pure PVA. The nanofibers films show improved the DC&AC electrical conductivity with increase CuCl2 addition, since it improved four orders from 3.7 x 10-4 mS/cm for without addition PVA film to 8.32 mS/cm for 10 wt.% CuCl2. AC electrical conductivity enhanced by increasing CuCl2 concentration, since it increased five orders from (1.17 × 10-6 S/ cm) for pure PVA film to (2.97×10-1 S/cm) for 10 wt.% CuCl2. Activation energy and S factor decreased with increasing the CuCl2 concentrations. The tensile strength of PVA film enhanced with adding of CuCl2 with enhancement modules of elasticity from 12.87 MPa for reference PVA to 123.4 MPa for 8 wt.% CuCl2.Electrospun technique used to prepare PVA polymer with (2, 4, 6, 8 and 10) CuCl2 wt.% nanofibers membarance as thin films conductive polymers, morphology and average fibers diameters measurement statically by Electron microscopic image, which obtain (115 nm) as average diameter of pure PVA. The nanofibers films show improved the DC&AC electrical conductivity with increase CuCl2 addition, since it improved four orders from 3.7 x 10-4 mS/cm for without addition PVA film to 8.32 mS/cm for 10 wt.% CuCl2. AC electrical conductivity enhanced by increasing CuCl2 concentration, since it increased five orders from (1.17 × 10-6 S/ cm) for pure PVA film to (2.97×10-1 S/cm) for 10 wt.% CuCl2. Activation energy and S factor decreased with increasing the CuCl2 concentrations. The tensile strength of PVA film enhanced with adding of CuCl2 with enhancement modules of elasticity from 12.87 MPa for reference PVA to 123.4 MPa for 8 wt.% CuCl2.
{"title":"Effect of copper chloride salt(CuCl2) addition on DC,AC conductivity and tensile strength of PVA electrospun polymeric film","authors":"A. R. Jabur, M. Abdulmajeed, S. Abd","doi":"10.1063/1.5138502","DOIUrl":"https://doi.org/10.1063/1.5138502","url":null,"abstract":"Electrospun technique used to prepare PVA polymer with (2, 4, 6, 8 and 10) CuCl2 wt.% nanofibers membarance as thin films conductive polymers, morphology and average fibers diameters measurement statically by Electron microscopic image, which obtain (115 nm) as average diameter of pure PVA. The nanofibers films show improved the DC&AC electrical conductivity with increase CuCl2 addition, since it improved four orders from 3.7 x 10-4 mS/cm for without addition PVA film to 8.32 mS/cm for 10 wt.% CuCl2. AC electrical conductivity enhanced by increasing CuCl2 concentration, since it increased five orders from (1.17 × 10-6 S/ cm) for pure PVA film to (2.97×10-1 S/cm) for 10 wt.% CuCl2. Activation energy and S factor decreased with increasing the CuCl2 concentrations. The tensile strength of PVA film enhanced with adding of CuCl2 with enhancement modules of elasticity from 12.87 MPa for reference PVA to 123.4 MPa for 8 wt.% CuCl2.Electrospun technique used to prepare PVA polymer with (2, 4, 6, 8 and 10) CuCl2 wt.% nanofibers membarance as thin films conductive polymers, morphology and average fibers diameters measurement statically by Electron microscopic image, which obtain (115 nm) as average diameter of pure PVA. The nanofibers films show improved the DC&AC electrical conductivity with increase CuCl2 addition, since it improved four orders from 3.7 x 10-4 mS/cm for without addition PVA film to 8.32 mS/cm for 10 wt.% CuCl2. AC electrical conductivity enhanced by increasing CuCl2 concentration, since it increased five orders from (1.17 × 10-6 S/ cm) for pure PVA film to (2.97×10-1 S/cm) for 10 wt.% CuCl2. Activation energy and S factor decreased with increasing the CuCl2 concentrations. The tensile strength of PVA film enhanced with adding of CuCl2 with enhancement modules of elasticity from 12.87 MPa for reference PVA to 123.4 MPa for 8 wt.% CuCl2.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125609073","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}
The aim of this paper is to measure the characteristics properties of 3 m radio telescope that installed inside Baghdad University campus. The measurements of this study cover some of the fundamental parameters at 1.42 GHz. These parameters concentrated principally on, the system noise temperature, signal to noise ratio and sensitivity, half power beam width, aperture efficiency, and effective area. These parameters are estimated via different radio sources observation like Cas-A, full moon, sky background, and solar drift scan observations. From the results of these observations, these parameters are found to be approximately 64 K, 1.2, 0.9 Jansky, 3.7°, 0.54, and 3.8 m2 respectively. The parameters values have vital affect to quantitative assessment of our radio telescope and they are in a good correlation with the results presented in the literature.The aim of this paper is to measure the characteristics properties of 3 m radio telescope that installed inside Baghdad University campus. The measurements of this study cover some of the fundamental parameters at 1.42 GHz. These parameters concentrated principally on, the system noise temperature, signal to noise ratio and sensitivity, half power beam width, aperture efficiency, and effective area. These parameters are estimated via different radio sources observation like Cas-A, full moon, sky background, and solar drift scan observations. From the results of these observations, these parameters are found to be approximately 64 K, 1.2, 0.9 Jansky, 3.7°, 0.54, and 3.8 m2 respectively. The parameters values have vital affect to quantitative assessment of our radio telescope and they are in a good correlation with the results presented in the literature.
{"title":"Characteristics measurement of Baghdad University radio telescope for hydrogen emission line","authors":"Uday E Jallod, Kamal M. Abood","doi":"10.1063/1.5138521","DOIUrl":"https://doi.org/10.1063/1.5138521","url":null,"abstract":"The aim of this paper is to measure the characteristics properties of 3 m radio telescope that installed inside Baghdad University campus. The measurements of this study cover some of the fundamental parameters at 1.42 GHz. These parameters concentrated principally on, the system noise temperature, signal to noise ratio and sensitivity, half power beam width, aperture efficiency, and effective area. These parameters are estimated via different radio sources observation like Cas-A, full moon, sky background, and solar drift scan observations. From the results of these observations, these parameters are found to be approximately 64 K, 1.2, 0.9 Jansky, 3.7°, 0.54, and 3.8 m2 respectively. The parameters values have vital affect to quantitative assessment of our radio telescope and they are in a good correlation with the results presented in the literature.The aim of this paper is to measure the characteristics properties of 3 m radio telescope that installed inside Baghdad University campus. The measurements of this study cover some of the fundamental parameters at 1.42 GHz. These parameters concentrated principally on, the system noise temperature, signal to noise ratio and sensitivity, half power beam width, aperture efficiency, and effective area. These parameters are estimated via different radio sources observation like Cas-A, full moon, sky background, and solar drift scan observations. From the results of these observations, these parameters are found to be approximately 64 K, 1.2, 0.9 Jansky, 3.7°, 0.54, and 3.8 m2 respectively. The parameters values have vital affect to quantitative assessment of our radio telescope and they are in a good correlation with the results presented in the literature.","PeriodicalId":186251,"journal":{"name":"TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES19Gr","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121913161","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}
Mouhamad Chehaitly, M. Tabaa, F. Monteiro, A. Dandache
This work is part of a broader project in the field of wireless sensor networks, in which the wavelet transform is at the core of the transmission functions. Our goal in this paper is to propose a new DWT architecture characterized by a high level of performance and a low cost design. This goal is achieved in particular thanks to the intelligent sharing of hardware resources between the different filters in the DWT algorithm. This paper presents the architectures developped for the first generation Discrete Wavelet Packet Transform (DWPT), based on the Mallat algorithm, and for the second generation DWPT, based on the lifting scheme. These archictures empower us to compute DWPT at high sampling rates (upto 750 Mega-samples per second) while requiring only limited hardware resources and no memory storage between or within the different depth stages of the DWPT / IDWPT (Inverse DWPT) transform.This work is part of a broader project in the field of wireless sensor networks, in which the wavelet transform is at the core of the transmission functions. Our goal in this paper is to propose a new DWT architecture characterized by a high level of performance and a low cost design. This goal is achieved in particular thanks to the intelligent sharing of hardware resources between the different filters in the DWT algorithm. This paper presents the architectures developped for the first generation Discrete Wavelet Packet Transform (DWPT), based on the Mallat algorithm, and for the second generation DWPT, based on the lifting scheme. These archictures empower us to compute DWPT at high sampling rates (upto 750 Mega-samples per second) while requiring only limited hardware resources and no memory storage between or within the different depth stages of the DWPT / IDWPT (Inverse DWPT) transform.
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