著者
Anwar Abdelgayed Ebid Raniah M Alhammad Rania T Alhendi Bushra A Alqarhi Elaf M Baweyan Luluh H Alfadli Mashael A Alzahrani Mawaddah F Alotaibi Nawal A Alaidrous Raghad A Alzahrani Rafaa M Alqurashi Shouq S Alharbi Shuruq J Azhar
出版者
The Society of Physical Therapy Science
雑誌
Journal of Physical Therapy Science (ISSN:09155287)
巻号頁・発行日
vol.31, no.11, pp.925-930, 2019 (Released:2019-11-26)
参考文献数
38
被引用文献数
5

[Purpose] The aim of this study was to evaluate the effect of pulsed high intensity neodymium-doped yttrium aluminum garnet (Nd: YAG) laser on staphylococcus aureus (S. aureus) and pseudomonas aeruginosa (P. aeruginosa) bacterial growth, which cause many health problems and establish which doses are effective in bacterial inhibition. [Materials and Methods] Five samples of S. aureus and five samples of P. aeruginosa were prepared in the microbiology lab, one used as control sample and the other 4 samples acted as experimental samples. The experimental samples received pulsed high intensity Nd: YAG laser with a total dose of 500, 600, 700 and 800 joules. The primary measures are colony count and the percentage decrease in colony count, the colony count was assessed at baseline and after 24 h of laser application. [Result] There was significant decrease in colony count and the percentage decrease in colony count after pulsed high intensity Nd: YAG laser application in all experimental samples of S. aureus and P. aeruginosa after 24 h of application for all doses (500, 600, 700 and 800 j) as compared with the control sample, with the most effect in higher doses of pulsed high intensity Nd: YAG laser than lower doses in both types of bacteria. [Conclusion] pulsed high intensity Nd: YAG laser was found to be an effective modality for inhibition of S. aureus and P. aeruginosa growth after a single application.
著者
Y. Takamura Y. Stutler E. Matsushita K. Shinohara T. Suzuki S. Nakagawa
出版者
The Magnetics Society of Japan
雑誌
Journal of the Magnetics Society of Japan (ISSN:18822924)
巻号頁・発行日
vol.43, no.6, pp.120-124, 2019-11-01 (Released:2019-11-01)
参考文献数
26
被引用文献数
7

We systematically investigated perpendicular magnetic anisotropy (PMA) in bilayers comprising ultrathin full-Heusler Co2FeSi (CFS) alloy and MgO as an insulator. The MgO layer was fabricated using two different sputtering techniques: reactive sputtering and radio-frequency sputtering. The characteristics of the layers fabricated using the different methods were compared. Irrespective of the MgO fabrication technique, the CFS/MgO bilayers exhibited PMA when the CFS surface was exposed to oxygen, which resulted in additional Fe–O bonds at the interface. Additionally, we characterized PMA in the bilayers while varying the substrate temperature TS for CFS sputtering. CFS samples that were 0.6-nm thick exhibited PMA when they were formed at TS as high as 300°C. The bilayer formed at 350°C exhibited in-plane magnetic anisotropy. Quantitative analysis of the magnetic anisotropy energy density revealed that the dominant magnetic anisotropy contribution in PMA differed between the bilayers formed at 300°C and 350°C. We expect these findings to be useful in the further development of high spin-polarized ferromagnetic electrodes containing PMA for next-generation spintronics devices.
著者
Y. Takamura Y. Stutler E. Matsushita K. Shinohara T. Suzuki S. Nakagawa
出版者
The Magnetics Society of Japan
雑誌
Journal of the Magnetics Society of Japan (ISSN:18822924)
巻号頁・発行日
pp.1911R004, (Released:2019-10-19)
参考文献数
26
被引用文献数
7

We systematically investigated perpendicular magnetic anisotropy (PMA) in bilayers comprising ultrathin full-Heusler Co2FeSi (CFS) alloy and MgO as an insulator. The MgO layer was fabricated using two different sputtering techniques: reactive sputtering and radio-frequency sputtering. The characteristics of the layers fabricated using the different methods were compared. Irrespective of the MgO fabrication technique, the CFS/MgO bilayers exhibited PMA when the CFS surface was exposed to oxygen, which resulted in additional Fe–O bonds at the interface. Additionally, we characterized PMA in the bilayers while varying the substrate temperature TS for CFS sputtering. CFS samples that were 0.6-nm thick exhibited PMA when they were formed at TS as high as 300°C. The bilayer formed at 350°C exhibited in-plane magnetic anisotropy. Quantitative analysis of the magnetic anisotropy energy density revealed that the dominant magnetic anisotropy contribution in PMA differed between the bilayers formed at 300°C and 350°C. We expect these findings to be useful in the further development of high spin-polarized ferromagnetic electrodes containing PMA for next-generation spintronics devices.
著者
Toshinori Tanaka Nobukazu Tanaka Yukio Nagano Hirotaka Kanuka Daisuke S. Yamamoto Natsuko Yamamoto Eiji Nanba Takumi Nishiuchi
出版者
Academic Consociation of Environmental Safety and Waste Management, Japan
雑誌
環境と安全 (ISSN:18844375)
巻号頁・発行日
pp.E19SC0801, (Released:2019-10-07)
参考文献数
12

Gene drive is a powerful system that can spread a desirable genetic trait into an entire species and/or population of a certain region,bypassing Mendelian rules of inheritance. Recently, one of the genome editing technologies, CRISPR/Cas, has been developed, making it easier to use gene drive in many different organisms. However, gene drive has potential risks that impact genetic diversity when organisms produced by CRISPR/Cas-based Gene Drive Technology (CCGDT) are accidentally released; therefore, a high degree of prudence is required when CCGDT is used.In Japan, a Working Group on Gene Drive has been established in the Academic Association for Promotion of Genetic Studies (AAPGS), and a Statement on the Handling of Gene Drive was issued to the public including research institute across Japan, after comprehensive and extensive discussions by the working group in order to reduce risks posed by CCGDT. A national-wide survey on CCGDT was implemented. The survey revealed that those in managerial positions including members and secretariats of institutional review boards on recombinant DNA, and biosafety officers are conscious of CCGDT, and efforts to grasp experimental plans involving CCGDT are made by utilizing an application form for recombinant DNA experiment. In contrast, potential risks of CCGDT are not understood by many researchers. All stakeholders need to disseminate potential risks and preventive measures regarding CCGDT to all researchers who may wish to use this technology. Researchers should use CCGDT upon understanding its potential risks and taking necessary measures. This report refers to how safety measures for CRISPR/Cas-based gene drive technology which has potential risks to ecological system has been discussed and results of national-wide questionnaire survey on gene drive in Japan based on the poster presentation at the Asian Conference on Safety & Education in Laboratory 2018.
著者
植竹 智 原 秀明 平木 貴宏 岩崎 達郎 笠松 良崇 北尾 真司 小林 康浩 小無 健司 増田 孝彦 増田 亮 宮本 祐樹 岡井 晃一 大久保 翔 尾崎 亮太 笹尾 登 佐藤 帯子 T. Schumm 瀬戸 誠 重河 優大 S. Stellmer 鈴木 健太 渡部 信 山口 敦史 安田 勇輝 依田 芳卓 吉見 彰洋 吉村 浩司 吉村 太彦
出版者
一般社団法人 日本物理学会
雑誌
日本物理学会講演概要集 72.1 (ISSN:21890803)
巻号頁・発行日
pp.789, 2017 (Released:2018-04-19)

229トリウムには,原子核としては異常に低い数eVの励起準位が存在することが知られている.この原子核遷移は電子に遮蔽されているため外乱の影響を受けにくく,レーザーにより直接励起できる可能性がある.そのため新世代高精度周波数標準としての応用を目指した研究が世界各国で進められている. しかしながら,先行研究で明らかになった遷移エネルギーは7.8±0.5eV (159±10nm) と不定性が大きいため,より精密な決定が急務である.我々はSPring-8の高輝度放射光X線による核共鳴散乱を用いた新しい手法により,原子核遷移周波数を精密に決定することを目指している.これまでにX線の高時間分解能検出器開発,高密度229トリウム標的開発などを進めてきた.講演では実験の現状について詳細を報告する.