We are investing effective utilization of the food wastes for agriculture and focusing on coffee grounds which is disposed of in a large quantity and difficult to reuse. There are obstacles in using coffee grounds for agricultural materials, because coffee grounds are high carbon to nitrogen (C/N) ratio and may contain a kind of plant growth inhibitor, therefore here we used water extract from coffee grounds. Growth of Japanese mustard spinach ( Brassica rapa var. prviridis ) was enhanced by applying the water extract from coffee grounds, and the growth ratio was almost the same as plants applied commercial liquid fertilizer. The water extract from coffee grounds showed higher values in nitrogen, phosphoric acid, potassium, and minerals than the commercial liquid fertilizer, the plants, however, might not use these nutrients enough. Chlorophyll content in the plants applied the water extract from coffee grounds was higher than plants applied the liquid fertilizer, but there was no correlation between chlorophyll content and growth of plants.
我们正在投资有效利用粮食废弃物用于农业，重点是大量处理且难以再利用的咖啡渣。利用咖啡渣作为农业原料存在障碍，因为咖啡渣碳氮比高，可能含有一种植物生长抑制剂，因此我们在这里使用咖啡渣的水提物。施用咖啡渣水提物可促进日本芥菜菠菜(Brassica rapa var. proviridis)的生长，其生长速率与施用商业液肥基本相同。咖啡渣的水提取物中氮、磷酸、钾和矿物质的含量高于商业液体肥料，然而，植物可能没有充分利用这些营养物质。施用咖啡渣水提物的植株叶绿素含量高于施用液肥的植株，但叶绿素含量与植株生长无相关性。
{"title":"Effects of utilization of water extract from coffee grounds on the growth and chlorophyll content of Japanese mustard spinach","authors":"A. Ishizuka, K. Ishihara, K. Murota","doi":"10.2978/JSAS.30109","DOIUrl":"https://doi.org/10.2978/JSAS.30109","url":null,"abstract":"We are investing effective utilization of the food wastes for agriculture and focusing on coffee grounds which is disposed of in a large quantity and difficult to reuse. There are obstacles in using coffee grounds for agricultural materials, because coffee grounds are high carbon to nitrogen (C/N) ratio and may contain a kind of plant growth inhibitor, therefore here we used water extract from coffee grounds. Growth of Japanese mustard spinach ( Brassica rapa var. prviridis ) was enhanced by applying the water extract from coffee grounds, and the growth ratio was almost the same as plants applied commercial liquid fertilizer. The water extract from coffee grounds showed higher values in nitrogen, phosphoric acid, potassium, and minerals than the commercial liquid fertilizer, the plants, however, might not use these nutrients enough. Chlorophyll content in the plants applied the water extract from coffee grounds was higher than plants applied the liquid fertilizer, but there was no correlation between chlorophyll content and growth of plants.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85901576","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}
Arata Yagi, S. Takase, Masae Kanda, N. Inoue, Takahiro Helmut Uchida, I. Jimbo, Y. Nishi
An optimal condition to improve the adhesion of PTFE/PE lamination of Polytetrafluoroethylene (PTFE) untreated and Polyethylene (PE) activated by homogeneous low voltage electron beam irradiation (HLEBI) under each O2 partial pressure in N2 gas atmosphere prior to hot-press was studied. Its adhesive force of PTFE/PE with 0.22 MGy-HLEBI under optimal O2 partial pressure (20000 ppm) in protective N2 atmosphere was 14.6 N/m, which was about 2.2 times higher than that (6.7 N/m) of PTFE/PE with 0.22 MGy-HLEBI under low O2 partial pressure (200 ppm) in N2.
{"title":"Adhesion Improvement of Biomedically Adaptable Lamination Sheets of PTFE and Surface Activated PF irradiated by EB","authors":"Arata Yagi, S. Takase, Masae Kanda, N. Inoue, Takahiro Helmut Uchida, I. Jimbo, Y. Nishi","doi":"10.2978/JSAS.29107","DOIUrl":"https://doi.org/10.2978/JSAS.29107","url":null,"abstract":"An optimal condition to improve the adhesion of PTFE/PE lamination of Polytetrafluoroethylene (PTFE) untreated and Polyethylene (PE) activated by homogeneous low voltage electron beam irradiation (HLEBI) under each O2 partial pressure in N2 gas atmosphere prior to hot-press was studied. Its adhesive force of PTFE/PE with 0.22 MGy-HLEBI under optimal O2 partial pressure (20000 ppm) in protective N2 atmosphere was 14.6 N/m, which was about 2.2 times higher than that (6.7 N/m) of PTFE/PE with 0.22 MGy-HLEBI under low O2 partial pressure (200 ppm) in N2.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83744882","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}
Many food wastes dispose from mainly developed countries including Japan, on the other hand a drain of phosphatic fertilizer is an issue of sustainable agriculture. Here we investigated effective utilization of the food wastes for agriculture, and focused on coffee grounds which is disposed of in a large quantity and difficult to reuse. It is difficult to use the coffee grounds for agricultural materials (ex; fertilizer, soil conditioner), because the coffee grounds are high carbon to nitrogen (C/N) ratio and contains a kind of plant growth inhibitor. Hence, the water (coffee grounds extract) stained out coffee grounds was used. Japanese mustard spinach (Brassica rapa var. prviridis) growth (fresh weight, dry weight and shoot length) was enhanced by applying the coffee grounds extract, and the growth ratio was almost same as plants applied commercial liquid fertilizer. We therefore suggest that the coffee grounds extract may use fertilizer in agriculture.
许多食物垃圾的处理主要来自包括日本在内的发达国家，另一方面，磷肥的排放是一个可持续农业的问题。在此，我们研究了食物垃圾的有效利用，并重点研究了大量处理且难以再利用的咖啡渣。咖啡渣很难用作农业原料(例如;因为咖啡渣的碳氮比(C/N)高，并且含有一种植物生长抑制剂。因此，水(咖啡渣提取物)染色咖啡渣被使用。施用咖啡渣浸膏能促进芥菠菜(Brassica rapa var. proviridis)的生长(鲜重、干重和茎长)，其生长率与施用商品液肥基本相同。因此，我们建议咖啡渣提取物可用于农业肥料。
{"title":"Possibilities of the application of food wastes to agriculture:Effect of coffee grounds extract on the growth of Japanese mustard spinach","authors":"A. Ishizuka, K. Ishihara, K. Murota","doi":"10.2978/JSAS.29102","DOIUrl":"https://doi.org/10.2978/JSAS.29102","url":null,"abstract":"Many food wastes dispose from mainly developed countries including Japan, on the other hand a drain of phosphatic fertilizer is an issue of sustainable agriculture. Here we investigated effective utilization of the food wastes for agriculture, and focused on coffee grounds which is disposed of in a large quantity and difficult to reuse. It is difficult to use the coffee grounds for agricultural materials (ex; fertilizer, soil conditioner), because the coffee grounds are high carbon to nitrogen (C/N) ratio and contains a kind of plant growth inhibitor. Hence, the water (coffee grounds extract) stained out coffee grounds was used. Japanese mustard spinach (Brassica rapa var. prviridis) growth (fresh weight, dry weight and shoot length) was enhanced by applying the coffee grounds extract, and the growth ratio was almost same as plants applied commercial liquid fertilizer. We therefore suggest that the coffee grounds extract may use fertilizer in agriculture.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80371928","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}
Y. Enomoto, Hitoki Hasegawa, Masae Kanda, Y. Matsumura, Y. Nishi
A joint between the carbon fibers (CF) reinforced thermoplastic polycarbonate and titanium (Ti) with extremely large friction force induced by the broad fiber interface was successfully prepared by using both electron beam melting process to wrap one side of the CF into the Ti and hot-press under air to wrap the other side of CF into polycarbonate (PC). The joint tensile strength was higher than those of glue and spontaneous joints without fiber, and then exhibited the extremely high safety level.
{"title":"Preparation and strength of Ti ⁄ polycarbonate joint connected by carbon fibers","authors":"Y. Enomoto, Hitoki Hasegawa, Masae Kanda, Y. Matsumura, Y. Nishi","doi":"10.2978/JSAS.29106","DOIUrl":"https://doi.org/10.2978/JSAS.29106","url":null,"abstract":"A joint between the carbon fibers (CF) reinforced thermoplastic polycarbonate and titanium (Ti) with extremely large friction force induced by the broad fiber interface was successfully prepared by using both electron beam melting process to wrap one side of the CF into the Ti and hot-press under air to wrap the other side of CF into polycarbonate (PC). The joint tensile strength was higher than those of glue and spontaneous joints without fiber, and then exhibited the extremely high safety level.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80048144","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}
Naoaki Iiduka, K. Itako, Masataka Ochiai, Bakhsh Hossam
Currently, the production and installation quantity of photovoltaic modules has been increasing rapidly. Meanwhile, the failure cases are also increasing. Accordingly, many failures are results of the Hot-Spot phenomenon. This is a phenomenon in which the entire or part of the defective cell becomes hot when shadow occurs on the cell for a long period. In severe cases, the phenomenon causes breaking of the cell and a fire. While there are many Hot-Spot inspection methods, such as using infrared cameras, the inspection instruments of these methods are expensive, and these methods also require a lot of time and effort during the inspection. Previously, the authors proposed a Hot-Spot detection system included into PCS. In this paper, we proposed plug-in type Hot-Spot detection system, and report about effectiveness of the system.
{"title":"Application of plug-in real time Hot-Spot detection system into PV peak bridge method in PV generation system","authors":"Naoaki Iiduka, K. Itako, Masataka Ochiai, Bakhsh Hossam","doi":"10.2978/JSAS.29101","DOIUrl":"https://doi.org/10.2978/JSAS.29101","url":null,"abstract":"Currently, the production and installation quantity of photovoltaic modules has been increasing rapidly. Meanwhile, the failure cases are also increasing. Accordingly, many failures are results of the Hot-Spot phenomenon. This is a phenomenon in which the entire or part of the defective cell becomes hot when shadow occurs on the cell for a long period. In severe cases, the phenomenon causes breaking of the cell and a fire. While there are many Hot-Spot inspection methods, such as using infrared cameras, the inspection instruments of these methods are expensive, and these methods also require a lot of time and effort during the inspection. Previously, the authors proposed a Hot-Spot detection system included into PCS. In this paper, we proposed plug-in type Hot-Spot detection system, and report about effectiveness of the system.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"105 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79547467","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}
When developing rehabilitation assist suits, safety consideration for patients is one of the most important issues. In this paper, we propose an ankle joint assist suit with a velocity-based safety device and a commercial torque limiter. The velocity-based safety device switches off the assist suit’s motor if it detects an unexpected high joint angular velocity. The torque limiter cuts off the torque transmission if it detects an unexpected high joint torque. These devices work even when the assist suit’s computer breaks down, because they consist of only passive mechanical components without actuators, controllers, or batteries. First, we describe the design requirements for this assist suit. Next, we clarify the relationship between the design requirements and the assist suit parts by using Kato’s multispace-quality function deployment (M-QFD). Finally, we present the assist suit design incorporating this relationship.
{"title":"Development of an ankle joint assist suit with hardware-based safety devices (Design using quality function deployment)","authors":"Mitsuyoshi Yabe, Souhei Noguchi, Masahito Sugiyama, Keisuke Ikeda, Tsubasa Kaneda, Yoshihiro Kai, M. Tomizuka","doi":"10.2978/JSAS.29105","DOIUrl":"https://doi.org/10.2978/JSAS.29105","url":null,"abstract":"When developing rehabilitation assist suits, safety consideration for patients is one of the most important issues. In this paper, we propose an ankle joint assist suit with a velocity-based safety device and a commercial torque limiter. The velocity-based safety device switches off the assist suit’s motor if it detects an unexpected high joint angular velocity. The torque limiter cuts off the torque transmission if it detects an unexpected high joint torque. These devices work even when the assist suit’s computer breaks down, because they consist of only passive mechanical components without actuators, controllers, or batteries. First, we describe the design requirements for this assist suit. Next, we clarify the relationship between the design requirements and the assist suit parts by using Kato’s multispace-quality function deployment (M-QFD). Finally, we present the assist suit design incorporating this relationship.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90832714","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}
Daisuke Kitahara, Akiko Minegishi, Takahiro Helmut Uchida, Masae Kanda, N. Inoue, Y. Matsumura, Y. Nishi
Adhesion induced by homogeneous low voltage EB-irradiation (HLEBI) under O2 partial pressure from 0.02 mol% to 20 mol% in N2 gas atmosphere of CFRP/Al lamination has been successfully developed. Its adhesive tensile shear strength of CFRP/Al with 0.30 MGy-HLEBI under optimal O2 partial pressure in N2 atmosphere of 0.2 mol% is 8.2 MPa, which is about 1.4 times higher than that (5.9 MPa) of CFRP/Al untreated.
{"title":"EB-Irradiation Induced Adhesion under Optimal O2 Partial Pressure in N2 Atmosphere of CFRP/Al Lamination for Airplane","authors":"Daisuke Kitahara, Akiko Minegishi, Takahiro Helmut Uchida, Masae Kanda, N. Inoue, Y. Matsumura, Y. Nishi","doi":"10.2978/JSAS.29103","DOIUrl":"https://doi.org/10.2978/JSAS.29103","url":null,"abstract":"Adhesion induced by homogeneous low voltage EB-irradiation (HLEBI) under O2 partial pressure from 0.02 mol% to 20 mol% in N2 gas atmosphere of CFRP/Al lamination has been successfully developed. Its adhesive tensile shear strength of CFRP/Al with 0.30 MGy-HLEBI under optimal O2 partial pressure in N2 atmosphere of 0.2 mol% is 8.2 MPa, which is about 1.4 times higher than that (5.9 MPa) of CFRP/Al untreated.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84295986","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}
Tomomi Harada, Y. Sasaki, M. Okuhata, M. Takashiri
We investigated the thermoelectric properties of electrodeposited Sb-Te thin films using thermal annealing and incorporating diffusion barrier layer between the stainless steel substrate and the Sb-Te thin film. Molybdenum (Mo) and nickel (Ni) films were used as a diffusion barrier layer. Surface morphology was observed by scanning electron microscope, and crystallographic characteristic was examined by X-ray diffraction analysis. In-plane thermoelectric properties, in terms of the electrical conductivity, Seebeck coefficient and power factor, were measured at room temperature. It was found that Sb-Te thin film with Mo layer exhibited higher thermoelectric performance compared to that of Sb-Te thin film with no diffusion barrier layer. This is because the impurity atoms from the substrate and Mo layer itself did not diffuse so much into Sb-Te layer. On the other hand, Sb-Te thin film with Ni layer exhibited the lower thermoelectric properties owing to the diffusion of Ni atoms into the Sb-Te thin film. Therefore, incorporation of Mo layer is beneficial to improve the thermoelectric properties of Sb-Te thin films by thermal annealing.
{"title":"Improvement in thermoelectric properties of electrodeposited p-type Sb-Te thin films by performing thermal annealing and incorporating diffusion barrier layers","authors":"Tomomi Harada, Y. Sasaki, M. Okuhata, M. Takashiri","doi":"10.2978/JSAS.29104","DOIUrl":"https://doi.org/10.2978/JSAS.29104","url":null,"abstract":"We investigated the thermoelectric properties of electrodeposited Sb-Te thin films using thermal annealing and incorporating diffusion barrier layer between the stainless steel substrate and the Sb-Te thin film. Molybdenum (Mo) and nickel (Ni) films were used as a diffusion barrier layer. Surface morphology was observed by scanning electron microscope, and crystallographic characteristic was examined by X-ray diffraction analysis. In-plane thermoelectric properties, in terms of the electrical conductivity, Seebeck coefficient and power factor, were measured at room temperature. It was found that Sb-Te thin film with Mo layer exhibited higher thermoelectric performance compared to that of Sb-Te thin film with no diffusion barrier layer. This is because the impurity atoms from the substrate and Mo layer itself did not diffuse so much into Sb-Te layer. On the other hand, Sb-Te thin film with Ni layer exhibited the lower thermoelectric properties owing to the diffusion of Ni atoms into the Sb-Te thin film. Therefore, incorporation of Mo layer is beneficial to improve the thermoelectric properties of Sb-Te thin films by thermal annealing.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88888489","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}
We prepared p-type antimony telluride thin films by an oblique deposition at the incident angle ranging from 0º to 80º. We investigated the relationship between the structural and electrical properties of the thin films. As the structural properties, we analyzed cross-section morphology by scanning electron microscope (SEM), and the crystal orientation and crystallite size by x-ray diffraction (XRD) analysis. As the electrical properties, we measured in-plane electrical conductivity, Seebeck coefficient and power factor at room temperature. As a result, we found the thin film at the incident angle of 40° obtained the highest crystal orientation. As the incident angle increased, the crystallite size were enhanced but the power factor decreased. The power factor of thin film at the incident angle of 0° was 1.26 μW / ( cm · K 2 ) and thin film at the incident angle of 80° was 0.38 μW / ( cm · K 2 ).
{"title":"Crystal orientation control of antimony telluride thermoelectric thin films by oblique deposition","authors":"T. Shimojo, Y. Sasaki, M. Takashiri","doi":"10.2978/JSAS.11006","DOIUrl":"https://doi.org/10.2978/JSAS.11006","url":null,"abstract":"We prepared p-type antimony telluride thin films by an oblique deposition at the incident angle ranging from 0º to 80º. We investigated the relationship between the structural and electrical properties of the thin films. As the structural properties, we analyzed cross-section morphology by scanning electron microscope (SEM), and the crystal orientation and crystallite size by x-ray diffraction (XRD) analysis. As the electrical properties, we measured in-plane electrical conductivity, Seebeck coefficient and power factor at room temperature. As a result, we found the thin film at the incident angle of 40° obtained the highest crystal orientation. As the incident angle increased, the crystallite size were enhanced but the power factor decreased. The power factor of thin film at the incident angle of 0° was 1.26 μW / ( cm · K 2 ) and thin film at the incident angle of 80° was 0.38 μW / ( cm · K 2 ).","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89843286","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}
S. Togawa, Fumitaka Ishikawa, Saori Mera, A. Tonegawa, M. Amano, Y. Matsumura
Nuclear fusion device is developed as one of the future energy source. Fuels particles (tritium and deuterium), which don’t react, are exhausted from divertor to the outside of the reactor with a pump. Since tritium is a radioisotope and rarely exists in nature, fuels recovery is necessary. In this study, we have developed a new recover method by hydrogen storage material in the divertor plate. Tungsten is a candidate material for ITER as well as other future magnetic fusion energy devices. The recovery material consists of tungsten which is combined with titanium films as a hydrogen storage material. The titanium films were deposited by ion plating on tungsten substrates. The sample surface temperature was measured by radiation thermometer. After irradiation with deuterium plasma, retention properties of deuterium were examined with thermal desorption spectroscopy (TDS). The experimental results indicated that this method can be applied as a new hydrogen fuel recovery.
{"title":"Basic study for fuel recovery in divertor of nuclear fusion by using titanium","authors":"S. Togawa, Fumitaka Ishikawa, Saori Mera, A. Tonegawa, M. Amano, Y. Matsumura","doi":"10.2978/jsas.11004","DOIUrl":"https://doi.org/10.2978/jsas.11004","url":null,"abstract":"Nuclear fusion device is developed as one of the future energy source. Fuels particles (tritium and deuterium), which don’t react, are exhausted from divertor to the outside of the reactor with a pump. Since tritium is a radioisotope and rarely exists in nature, fuels recovery is necessary. In this study, we have developed a new recover method by hydrogen storage material in the divertor plate. Tungsten is a candidate material for ITER as well as other future magnetic fusion energy devices. The recovery material consists of tungsten which is combined with titanium films as a hydrogen storage material. The titanium films were deposited by ion plating on tungsten substrates. The sample surface temperature was measured by radiation thermometer. After irradiation with deuterium plasma, retention properties of deuterium were examined with thermal desorption spectroscopy (TDS). The experimental results indicated that this method can be applied as a new hydrogen fuel recovery.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81030993","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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