Journal of Advanced Science最新文献_第2页

Characterization of carbon nanotube formed by in-liquid plasma method 液体等离子体法制备碳纳米管的表征

Journal of Advanced Science Pub Date : 2022-01-01 DOI: 10.2978/jsas.34102

Nana Echigoya, Y. Show

引用次数: 0

Study on optimum parameter of MPPT converter unit in a PV generation system 光伏发电系统中MPPT转换机组最佳参数研究

Journal of Advanced Science Pub Date : 2022-01-01 DOI: 10.2978/jsas.34101

Takuma Endoh, K. Itako

引用次数: 0

Effects of yeast fermented coffee grounds extract on the growth of Japanese mustard spinach 酵母发酵咖啡渣提取物对芥菜菠菜生长的影响

Journal of Advanced Science Pub Date : 2022-01-01 DOI: 10.2978/jsas.34107

Jiadi Zhang, K. Murota, Satoru Katsuda

引用次数: 0

Mouthguard type biosensor for wireless measurement of salivary uric acid 用于唾液尿酸无线测量的护齿式生物传感器

Journal of Advanced Science Pub Date : 2022-01-01 DOI: 10.2978/jsas.34301

Gentaro Kawase, Takumi Oishi, Kenta Iitani, Koji Toma, T. Arakawa, K. Mitsubayashi

引用次数: 1

A consideration of the design of a medical device operation support system using smart glasses 基于智能眼镜的医疗器械操作支持系统设计思考

Journal of Advanced Science Pub Date : 2022-01-01 DOI: 10.2978/jsas.34106

Misato Nakatake, Tatsuhiro Kimura, Miu Satou, Ryo Oga, Ayane Kose, Mitsutoshi Yahara, Kazuto Doi

引用次数: 0

Optimization of Brookite TiO2 NPs Solution for Preparing the Electron Transport Layer of Flexible Perovskite Solar Cells 制备柔性钙钛矿太阳能电池电子传输层的Brookite TiO2 NPs溶液的优化

Journal of Advanced Science Pub Date : 2022-01-01 DOI: 10.2978/jsas.34104

Nuth Sophal, T. Kaneko, M. Isomura, Kohei Kasuya, T. Katsumata, K. Tomita

引用次数: 0

In-situ monitoring of CO2 methanation: pressure change upon ball-milling of LaNi5 under CO2 and H2 CO2甲烷化的现场监测:在CO2和H2条件下球磨LaNi5的压力变化

Journal of Advanced Science Pub Date : 2021-01-01 DOI: 10.2978/jsas.33107

Keito Sawahara, Ryota Gemma

{"title":"In-situ monitoring of CO2 methanation: pressure change upon ball-milling of LaNi5 under CO2 and H2","authors":"Keito Sawahara, Ryota Gemma","doi":"10.2978/jsas.33107","DOIUrl":"https://doi.org/10.2978/jsas.33107","url":null,"abstract":"Recently, atmospheric carbon dioxide concentration, which may enhance on-going global warming issue, is increasing rapidly. Here, methanation of atmospheric CO2 has been suggested. However, in the methanation process developed so far, at least 200-300 °C is required with using catalysts like Ni. Therefore, it is desirable to reduce the reaction temperature by different processes from the viewpoint of energy saving and also to avoid deactivation of catalysts at high temperatures. We have recently reported that mechanochemical process of La-Ni based alloys under the presence of CO2 and H2 generates CH4 successfully. But, it has also been suggested by Atom Probe Tomography (APT) analysis carried out in this study, that CO2 might have partially reacted with the LaNi5 powder in the course of ball-milling, yielding different La-oxides, carboxides and hydrocarboxylic species containing La embedded in Ni matrix. These compounds might have acted as effective intermediate phases for the methanation reaction. In order to elucidate the origin of the catalytic activity, in-situ monitoring of the pressure change during the process is necessary; reactivity of CO2 with LaNi5 in the said process should be investigated as well. Herein, monitoring results of mechanochemical methanation reaction by using vibrational ball-mill are presented.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79346630","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

Effects of newly developed coffee filter on contents of functional components in coffee 新型咖啡滤料对咖啡中功能成分含量的影响

Journal of Advanced Science Pub Date : 2021-01-01 DOI: 10.2978/JSAS.33102

K. Shimomura, Yoshiyuki Ichinosawa, S. Kinuta

{"title":"Effects of newly developed coffee filter on contents of functional components in coffee","authors":"K. Shimomura, Yoshiyuki Ichinosawa, S. Kinuta","doi":"10.2978/JSAS.33102","DOIUrl":"https://doi.org/10.2978/JSAS.33102","url":null,"abstract":"Coffee contains important functional compounds, such as caffeine, chlorogenic acid, trigonelline. In this work the influences of different filters, paper and metal filters (Golden Cafe Filter: GCF) and hot water temperature for coffee brew on the contents of functional compounds mentioned above was investigated. The contents of these three compounds in the coffee prepared with GCF were slightly higher than those brewed with paper filter. The effect of the extraction temperature (85, 90, 95 ̊C) on functional compounds of coffee prepared with both of paper filter and GCF was investigated, the concentration of these three compounds increased with a temperature rise. The coffee prepared with GCF showed slightly turbid compared to that with paper filter, but the fine coffee powder was not felt as a taste. The yield of coffee oil extracted from the coffee brewed with GCF was approximately 1.2 times higher than that from the paper filter. However HPLC analysis revealed that the caffeine found in the coffee oil prepared with GCF was approximately 66 % in that with paper filter. The content of functional compounds of coffee solution brewed by using GCF was higher than that brewed with paper filter, it might contribute to reduction of the environmental load since GCF is a reusable filter.","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84531275","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

Ultra – low friction characteristic of titanium diboride (TiB2) thin films at elevated temperature due to excess addition of boron 过量添加硼对二硼化钛(TiB2)薄膜高温下超低摩擦特性的影响

Journal of Advanced Science Pub Date : 2021-01-01 DOI: 10.2978/jsas.33103

Wataru Yamato, M. Kohzaki

{"title":"Ultra – low friction characteristic of titanium diboride (TiB2) thin films at elevated temperature due to excess addition of boron","authors":"Wataru Yamato, M. Kohzaki","doi":"10.2978/jsas.33103","DOIUrl":"https://doi.org/10.2978/jsas.33103","url":null,"abstract":"The research goal is to develop a new coating thin film for machining tools. The difficult-to-cut materials have an excellent characteristic and are highly demanded by industry, however there are serious issue on environment load owing to their low processing efficiency. TiB 2 thin film has a potential to decrease friction coefficient at elevated temperature, and we aimed to study decrease of friction coefficient under 0.1 at 600°C. In the previous research, it was found that the friction coefficient of TiB 2 -MoS 2 composite thin film showed 0.01 at 200°C. It is considered that this ultra-low-friction characteristic is caused by tribo-chemical reaction relating with boron. This low friction property was kept even after heat treatment at 400°C. However, the friction coefficient was increased at 500°C , and the boron and sulfur contents at the TiB 2 -MoS 2 composite thin film decreased. A new TiB 2 -MoS 2 composite film enhances boron reaction due to excess addition of boron. As a result, it was found that boron was indispensable for the ultra-low-friction characteristic at elevated temperature because it is maintained after the heat treatment at 500°C. Dry","PeriodicalId":14991,"journal":{"name":"Journal of Advanced Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82240977","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

Investigation of a new evaluation method (Octave factor) for guitar tones using FFT analysis 利用FFT分析研究一种新的吉他音色评价方法(八度因数)

Journal of Advanced Science Pub Date : 2021-01-01 DOI: 10.2978/JSAS.33101

Hagino Tanaka, K. Itako

引用次数: 0