Search Results 1-20 of 4112

  • A Study of Cone Shaped Pumping Cavity for High Efficiency of Solar-Pumped Lasers  [in Japanese]

    越地 駿人 , 大久保 友雅 , 高山 虎之輔 , 長井 健 , 松永 栄一 , 佐藤 雄二 , ヂン タンフン

    レーザー学会研究会報告 = Reports the on topical meeting of the Laser Society of Japan RTM21(1-6), 1-5, 2021-02-26

  • Laser Treatment of Ectopic Mongolian Spot in Childhood  [in Japanese]

    Funabashi Hitomi

    … <p>蒙古斑および異所性蒙古斑はほとんどが学童期までに自然消退するが,一部の症例では残存し整容的に問題となることがある.Qスイッチレーザー(ルビー,アレキサンドライト,Nd:YAG)で色調の改善が得られ,治療開始年齢が早いほど治療成績が良いため,早期からのレーザー治療を行うことも多い.ただしレーザー治療後は炎症後色素沈着や色素脱失などの合併症を生じやすいため,おさ …

    Nippon Laser Igakkaishi 42(1), 29-34, 2021

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  • Hydrogen Permeation Behavior of Scratch Formed on Zn Coated Steels in Simulated Atmospheric Corrosion Environment

    Sakata Kei , Sakairi Masatoshi , Kinugasa Junichiro

    … Six kinds of scratches with different aspect ratio (width/length) and area were fabricated by focused pulsed Nd: YAG laser irradiation. …

    ISIJ International 61(4), 1120-1126, 2021

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  • Hydrogen Permeation Behavior of Scratch on Zn Coated Steel during 1000 Hours Wet and Dry Corrosion Test

    Sakata Kei , Sakairi Masatoshi , Kinugasa Junichiro

    … The scratch was fabricated by focused pulsed Nd: YAG laser irradiation. …

    ISIJ International 61(4), 1127-1134, 2021

    J-STAGE 

  • Clinical Report of Nd:YAG Laser in Insurance Medical Treatment  [in Japanese]

    SUZAKI Akira

    … This is clinical report of Nd:YAG laser in insurance medical treatment. … It is known that one of characteristic of Nd:YAG laser beam is tissue permeability. … Hence, this laser beam has difficulty in making incisions in oral soft tissue and removing some outer layers of the gingiva. …

    Journal of Japanese Society for Laser Dentistry 31(1), 20-25, 2021

    J-STAGE 

  • Formation of NiAl Intermetallic Compound from Powder Mixture of Nickel and Aluminum by Laser Irradiation

    Matsumoto Ryo , Komaki Shota , Homi Ryohei , Utsunomiya Hiroshi

    … <p>NiAl intermetallic compound was formed by laser irradiation on powder mixture of nickel and aluminum. … In laser irradiation with an average energy density of 150 J/mm<sup>2</sup> … using a continuous wave 50 W Nd:YAG laser, Ni–49 at% Al powder mixture was immediately heated up to a temperature above 1680 K by reaction heat on the interface between nickel and aluminum powders. …

    MATERIALS TRANSACTIONS 62(4), 512-518, 2021

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  • The efficacy and safety of a laser thrombolytic system in an animal thrombosis model  [in Japanese]

    Matsumoto Yuji , Yamashita Daisuke , Shimizu Yoshiyuki , Takata Yohei , Kosugi Tsuyoshi , Tamaoki Yoshinori , Okada Hiroyuki , Nakayama Teiji , Umemura Kazuo

    … <p>For treating acute cerebral infarction, we developed a laser thrombolytic system with the second harmonic generation of microsecond Nd:YAG laser and investigated its mechanisms, effectiveness and safety in in-vitro and in vivo thrombosis models. … Observation of the laser irradiation reaction with a high-speed camera revealed that a bubble was generated in the gelatin phantom. …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society 94(0), 1-O-C1-4, 2021

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  • Effect of high-power Nd:YAG laser on the growth of <i>Staphylococcus aureus</i> and <i>Pseudomonas aeruginosa</i>: an experimental study

    Ebid Anwar A , Rahali Suhil , Alhammad Raniah M , Alhindi Rania T , Alghamdi Abdullah A , Alqarhi Abdulaziz K , Abdullah Hatim A , Almuqati Mishari A , Alsharfi Mohammad A , Alotaibi Rakan O

    … [Purpose] The aim of this study was to evaluate the effect of high-power Nd:YAG laser on <i>Staphylococcus aureus</i> … were prepared in the microbiology lab, one used as a control sample and the remaining six samples used as experimental samples, which were irradiated by a high-power laser (LASERSIX ME, 15W) with a total dose of 500 and 700 J. …

    Journal of Physical Therapy Science 33(3), 222-228, 2021

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  • Seasonal Variation in High Arctic Stratospheric Aerosols Observed by Lidar at Ny Ålesund, Svalbard between March 2014 and February 2018

    Shiraishi Koichi , Shibata Takashi

    … <p>Stratospheric aerosols over the high Arctic at Ny Ålesund, Svalbard (79°N, 12°E) were observed continuously for four years from March 2014 by a lidar system using the second harmonic wavelength (532 nm) of the Nd:YAG laser. …

    SOLA 17(0), 30-34, 2021

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  • Erasable Holographic Material Using Reworkable Photocuring Resin  [in Japanese]

    Kunihiko Kawabe , Hideki Tachi , Haruyuki Okamura

    … 波長532 nm のNd-YAG レーザーを光源とした二光束干渉法により,厚さ100 μm のリワーク型光硬化樹脂に透過ホログラムを記録できた。 …

    Journal of Networkpolymer,Japan 42(1), 16-22, 2021

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  • Preparation copper sulfide nanoparticles by laser ablation in liquid and optical properties

    Isoda Kazuki , Yanagihara Ryuga , Kitamoto Yoshitaka , Hara Masahiko , Wada Hiroyuki

    … <p>Copper sulfide nanoparticles were successfully prepared by laser ablation in liquid. … CuS powders in deionized water were irradiated with nanosecond-pulsed laser (Nd:YAG, SHG) to prepare nanoparticles. … According to the results of SEM and DLS, the primary and secondary particle size was decreased with the increase in laser fluence of laser ablation in liquid. …

    IEICE Transactions on Electronics, 2021

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  • LIBS analysis for effect of He plasma irradiation on F82H by third harmonics of pulsed Nd:YAG laser.  [in Japanese]

    Oshikane Yasushi , Ibano Kenzo

    <p>ITER核融合炉の構成材料の一つにF82H鋼がある.これは低放射化フェライト鋼の一種であるが,炉壁材料やダイバー多材料として用いられた際に,核融合プラズマの照射による表面組成の経時変化が懸念され,実験炉等における組成変化のその場観察技術が待たれている.炉癖は広く大きく,人間が立ち入るには危険な環境であるため,リモートで広範囲をラスタースキャンできるような高速の組成分析技術としてL …

    Proceedings of JSPE Semestrial Meeting 2020A(0), 322-323, 2020

    J-STAGE 

  • Simultaneous determination of U-Pb age, Nd isotope composition, and trace element abundances in monazite using the laser ablation split stream method  [in Japanese]

    Itano Keita , Yoshiya Kazumi , Iizuka Tsuyoshi

    … 本研究ではモナザイトのU-Pb年代・Nd同位体・希土類元素濃度同時分析の精度・確度の評価を行なった。 … 東京大学の多重検出器型と四重極型のICPMSをNd:YAGレーザーに接続した分析システムを構築した。 …

    Abstracts of Annual Meeting of the Geochemical Society of Japan 67(0), 167, 2020

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  • Enhancement of Ionization Efficiency Using Zeolite in Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry of Multiple Drugs in Cancer Cells (Mass Spectrometry of Multiple Drugs in Cells Using Zeolite)

    Kannen Hiroki , Nomura Shusei , Hazama Hisanao , Kaneda Yasufumi , Fujino Tatsuya , Awazu Kunio

    … Mass spectrometry using matrix-assisted laser desorption/ionization can detect multiple drugs simultaneously. … Ions were obtained with a time-of-flight mass spectrometer using a Nd:YAG laser at a wavelength of 355 nm. …

    Mass Spectrometry 9(1), A0091-A0091, 2020

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  • Effect of high level Nd:YAG laser irradiation on human gingival epithelial cells <i>in vitro</i>  [in Japanese]

    IGARASHI-TAKEUCHI Hiroko , TACHIBANA Toshiaki , NUMABE Yukihiro

    … <b>Purpose</b>: High reactive level laser therapy (HLLT) is often used in surgical treatment. … Subsequently, the cells were irradiated using a Nd:YAG laser at a distance of 5mm. … Three laser irradiation conditions were used: ①no irradiation (control group) ②100mJ, 30pps, 10seconds and ③200mJ, 30pps, 10seconds. …

    Journal of Japanese Society for Laser Dentistry 30(2), 63-69, 2020

    J-STAGE  Ichushi Web 

  • Laser-Induced Breakdown Spectroscopy of F82H steel  [in Japanese]

    Oshikane Yasushi , Hajiri Touko , Ibano Kenzo

    … は,プラズマ対向材料表面の分析が必須である.実験期間中に装置を大気解放することなく,その場診断により表面分析を行うことができ,組成分析が容易なレーザー誘起ブレークダウン分光(LIBS)は,深さ分解能や計測時間,簡便さにおいて,他の手法より優れている.本研究では,パルスNd:YAGレーザーの3ω光(355nm)を用いて,F82HのLIBS分析に着手したので,初期の実験結果について述べる.</p> …

    Proceedings of JSPE Semestrial Meeting 2020S(0), 808-809, 2020

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  • Pulsed ND:YAG laser combined with progressive pressure release in the treatment of cervical myofascial pain syndrome: a randomized control trial

    Alayat Mohamed Salaheldein , Battecha Kadrya Hosney , ELsodany Ahmed Mohamed , Ali Mohamed Ibrahim

    … <p>[Purpose] To investigate the effect of pulsed Nd:YAG laser combined with the progressive pressure release technique (PPRT) and exercises in the treatment of myofascial trigger points (MTrPs) in patients with myofascial pain syndrome (MPS). …

    Journal of Physical Therapy Science 32(7), 422-427, 2020

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  • Optical Hollow Fiber for CO<sub>2</sub> Laser Light Transmission Used in Endoscopic Therapy  [in Japanese]

    Hongo Akihito

    … より伝送されたCO<sub>2</sub>レーザー光は,ガイド光とともに照射位置を的確に把握しながら非接触で生体組織に照射される.CO<sub>2</sub>レーザーはかつて内視鏡下で広く検討されたNd:YAGレーザーと異なり,正常組織内に深く進達することがなく一括切除を目的とした切開効果に優れる.レーザーメスとして内視鏡治療,特に早期消化管癌を対象としたより安全な治療法として適用が …

    Nippon Laser Igakkaishi 41(1), 2-8, 2020

    J-STAGE  Ichushi Web 

  • The efficacy and safety of a laser thrombolytic system in an animal thrombosis model  [in Japanese]

    Matsumoto Yuji , Okada Hiroyuki , Nakayama Teiji , Umemura Kazuo , Hokamura Kazuya , Yamashita Daisuke , Shimizu Yoshiyuki , Takata Youhei , Kosugi Tsuyoshi , Tamaoki Yoshinori , Kawashima Toshiyuki , Yamashita Yutaka

    … <p>For treating acute cerebral infarction, we developed a laser thrombolytic system with the second harmonic generation of microsecond Nd:YAG laser, and investigated its mechanisms, effectiveness and safety in in vitro and in vivo thrombosis models. … Observation of the laser irradiation reaction with a high-speed camera revealed that a bubble was generated in the gelatin phantom. …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society 93(0), 2-O-042, 2020

    J-STAGE 

  • In-situ measurement of weld quality during MAG welding using laser ultrasonic  [in Japanese]

    OTAKI Satoshi , MATSUIDA Taketo , NOMURA Kazufumi , IMURA Fumiya , KITA Ryosuke , ASAI Satoru

    Laser ultrasonic technique (LUT) is applicable for measurement under high temperature condition because of the non-contact and remoteness. … Nanosecond pulse laser (1064nm, 60mJ/pulse 100Hz) was used to generate ultrasonic, and was scanned using a galvanometer mirror. … Nd:YAG laser interferometer (532nm, 1W) was used for detection the surface micro vibration caused by arrival of ultrasonic wave. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 38(1), 11-18, 2020

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