Yasir Kh. Mohammad, Farqad F. Idan, Rajaa S. Najim, Fareed M. Mohammed
Five regions in Salah -Din province Iraq were chosen to the study, concentration of radon in the rainwater falls in 2016. by using long-term technique for alpha particles emission with solid state nuclear track detector (SSNTD) CR-39, which have been used to determine the above radioactive isotopes concentrations in the samples. The results show the presence of some radioactivity on the area of Bieja refinery and it was measured to be (2.606) Bq.L-1 , the min average in Balad was (1.006) Bq.L-1, in general we found that radon 222Rn concentration, in the studied water samples, was less than the allowed permitted limit which is about 18 Bq.L-1, and it has no danger on human being life.
{"title":"Concentration Of Radon In The Rain Falls In Salah-Din Province / Iraq","authors":"Yasir Kh. Mohammad, Farqad F. Idan, Rajaa S. Najim, Fareed M. Mohammed","doi":"10.31185/jwsm.472","DOIUrl":"https://doi.org/10.31185/jwsm.472","url":null,"abstract":"Five regions in Salah -Din province Iraq were chosen to the study, concentration of radon in the rainwater falls in 2016. by using long-term technique for alpha particles emission with solid state nuclear track detector (SSNTD) CR-39, which have been used to determine the above radioactive isotopes concentrations in the samples. The results show the presence of some radioactivity on the area of Bieja refinery and it was measured to be (2.606) Bq.L-1 , the min average in Balad was (1.006) Bq.L-1, in general we found that radon 222Rn concentration, in the studied water samples, was less than the allowed permitted limit which is about 18 Bq.L-1, and it has no danger on human being life.","PeriodicalId":513437,"journal":{"name":"Journal of Wasit for Science and Medicine","volume":"31 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141215855","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}
By using a conventional solid-state reaction technique, a group of the superconducting samples with nominal composition Bi2-xPb0.3WxSr2Ca2Cu3O10±δ with (0≤x≤0.5) sintered at 840ᵒC for 140h in the air have been prepared. The effect substitution of tungsten nanoparticles on the physical properties of Bi sites was studied. X-ray diffraction (XRD) studies showed that all our samples are polycrystalline with orthorhombic structures and presence two phases: high-Tc phase (2223), low-Tc phase (2212) and an impurity phase Some impurities likeSr2Ca2Cu7Oδ, CaO and WO . In the prepared samples the lattice parameter values and the volume fraction of high-Tc phase are calculated. Electrical resistivity measurements show that the values of critical temperature Tc increase with tungsten content. The highest transition temperature, Tc, obtained for Bi2-xPb0.3WXSr2Ca2Cu3O10+δ composition was 191.8K with x=0.3.
{"title":"The Effect of Tungsten Nanoparticles on Superconducting of The Compound Bi2-xPb0.3WXSr2Ca2Cu3O10+δ","authors":"M. J. Tuama, Lamia K. Abbas","doi":"10.31185/jwsm.473","DOIUrl":"https://doi.org/10.31185/jwsm.473","url":null,"abstract":"By using a conventional solid-state reaction technique, a group of the superconducting samples with nominal composition Bi2-xPb0.3WxSr2Ca2Cu3O10±δ with (0≤x≤0.5) sintered at 840ᵒC for 140h in the air have been prepared. The effect substitution of tungsten nanoparticles on the physical properties of Bi sites was studied. X-ray diffraction (XRD) studies showed that all our samples are polycrystalline with orthorhombic structures and presence two phases: high-Tc phase (2223), low-Tc phase (2212) and an impurity phase Some impurities likeSr2Ca2Cu7Oδ, CaO and WO . In the prepared samples the lattice parameter values and the volume fraction of high-Tc phase are calculated. Electrical resistivity measurements show that the values of critical temperature Tc increase with tungsten content. The highest transition temperature, Tc, obtained for Bi2-xPb0.3WXSr2Ca2Cu3O10+δ composition was 191.8K with x=0.3.","PeriodicalId":513437,"journal":{"name":"Journal of Wasit for Science and Medicine","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141216025","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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