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Measurements on diproton emission from the break-up channels of ^(23)Al and ^(22)Mg

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Science China(Physics,Mechanics & Astronomy) 2011年第S1期54卷 18-23页

作者： TOGANO y AOI N BABA H HONDA T OKADA K hara y IEKI K ISHIBASHI y ITOU y IWASA N KANNO S KAWABATA T KIMURA H KONDO y KURITA K KUROKAWA M MORIGUCHI T MURAKAMI H OISHI H OTA S OZAWA A SAKURAI H SHIMOURA S SHIODA R TAKESHITA E TAKEUCHI S yAMADA K yAMADA y yASUDA y yONEDA K MOTOBAyASHI T Institute of Physical and Chemical Research (RIKEN) Wako Saitama 351-0198 Japan Department of Physics Rikkyo University Japan Institute of Physics University of Tsukuba Ibaraki Japan Department of Physics Tohoku University Japan Center for Nuclear Study (CNS) University of Tokyo Japan Department of Physics University of Tokyo Japan

Two-proton relative momentum distributions from the break-up channels 23Al→p+p+21Na and 22Mg→p+p+20Ne at an energy of 60-70 A MeV have been measured together with two-proton opening angles at the projectile fragment separator beamline (RIPS) in the RIKEN Ring Cyclotron Facility. The results demonstrate the existence of diproton emission component from single-step 2He for highly excited 23Al and 22Mg.

关键词： diproton emission proton-rich nuclei 23Al and 22Mg

儿茶素抑制二甲基肼诱发小鼠大肠癌的实验研究

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营养学报 1994年第2期16卷 149-154页

作者：银平章祝庆蕃程书钧刘政国孔令非 y.hara 河南省人民医院病理科河南医科大学中国医学科学院肿瘤研究所日本三井农林株式会社食品研究所

昆明种小鼠随机分成７组，１～５组小鼠皮下注射二甲基肼（１，２－Ｄｉｍｅｔｈｙｌｈｙｄｒａｚｉｎｅ，ＤＭＨ），剂量２０ｍｇ／ｋｇｂｗ，每周一次，连续２０周。第２～５组于注射前一周开始灌胃儿茶素，每鼠每日分别为１ｍｇ、２... 详细信息

昆明种小鼠随机分成７组，１～５组小鼠皮下注射二甲基肼（１，２－Ｄｉｍｅｔｈｙｌｈｙｄｒａｚｉｎｅ，ＤＭＨ），剂量２０ｍｇ／ｋｇｂｗ，每周一次，连续２０周。第２～５组于注射前一周开始灌胃儿茶素，每鼠每日分别为１ｍｇ、２ｍｇ、４ｍｇ、没食子酰表没食子儿茶素［（－）－Ｅｐｉｇａｌｌｏ－ｃａｔｅｃｈｉｎｇａｌｌａｔｅ］２ｍｇ，第６组给儿茶素３ｍｇ作为对照组，每周连续５次至２３周。第７组为溶剂对照组。２７周处死小鼠，结果显示：两组对照组小鼠未发现肿瘤。ＤＭＨ组大肠癌发生率为８０％，与２～５组比较明显升高（Ｐ＜０．００１），结果提示：（１）不同剂量的儿茶素都具有防癌作用，其机理可能与诱导ＳＯＤ等抗氧化剂的活性消除有害自由基有关；（２）其抑癌有效成分可能是多种儿茶素协同作用的结果；（３）儿茶素对个鼠无毒性作用。

关键词：儿茶素二甲基肼大肠肿瘤实验

Laboratory radiative accretion shocks on GEKKO XⅡlaser facility for POLAR project

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High Power Laser Science and Engineering 2018年第2期6卷 181-188页

作者： L.Van Box Som E.Falize M.Koenig y.Sakawa B.Albertazzi E Barroso J.-***-Bidaud C.Busschaert A.Ciardi y.hara N.Katsuki R.Kumar E Lefevre C.Michaut Th.Michel T.Miura T.Morita M.Mouchet G.Rigon T.Sano S.Shiiba H.Shimogawara S.Tomiya CEA-DAM-DIF F-91297 ArpajonFrance LERMA Sorbonne UniversiteObservatoire de ParisUniversite PSLCNRSF-75005 ParisFrance CEA Saclay DSM/Irfu/Service d'AstrophysiqueF-91191 Gif-sur-YvetteFrance LULI-CNRS Ecole PolytechniqueCEA:Universite Paris-Saclay UPMC Univ Paris 06:Sorbonne Universite-F-91128 Palaiseau Cedex France Graduate School of Engineering Osaka UniversitySuitaOsaka 565-0871Japan Institute of Laser Engineering Osaka UniversitySuitaOsaka 565-0871Japan Faculty of Engineering Sciences Kyushu University6-1 Kasuga-KoenKasugaFukuoka 816-8580Japan Aoyama Gakuin University Japan GEPI Observatoire de ParisPSL Research UniversityCNRSUniversite Paris DiderotSorbonne Paris CiteF-75014 ParisFrance LUTH Observatoire de ParisPSL Research UniversityCNRSUniversite Paris DiderotSorbonne Paris CiteF-92195 MeudonFrance

A new target design is presented to model high-energy radiative accretion shocks in polars. In this paper, we present the experimental results obtained on the GEKKO XII laser facility for the POLAR project. The experimental results are compared with 2 D FCI2 simulations to characterize the dynamics and the structure of plasma flow before and after the collision. The good agreement between simulations and experimental data confirms the formation of a reverse shock where cooling losses start modifying the post-shock region. With the multi-material structure of the target,a hydrodynamic collimation is exhibited and a radiative structure coupled with the reverse shock is highlighted in both experimental data and simulations. The flexibility of the laser energy produced on GEKKO XII allowed us to produce high-velocity flows and study new and interesting radiation hydrodynamic regimes between those obtained on the LULI2000 and Orion laser facilities.

关键词： accretion processes high power laser hydrodynamics laboratory astrophysics

没食子酰表没食子儿茶素对促癌物TPA抑制作用的研究

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癌变．畸变．突变 1992年第1期4卷 1-4页

作者：童彤程书钧李秀琴白谨峰 y.hara 中国医学科学院肿瘤研究所北京100021

本研究首次证明,绿茶多酚类的主要成分没食子酰表没食子儿茶素(EGCG)具有很强的抑制促癌物TPA诱导的皮肤炎性水肿和增生反应,以及抑制TPA促进经甲基胆蒽启动的BALB/3T3细胞的转化作用。本实验结果表明,EGCG可能是绿茶多酚提取物中抑制TP... 详细信息

本研究首次证明,绿茶多酚类的主要成分没食子酰表没食子儿茶素(EGCG)具有很强的抑制促癌物TPA诱导的皮肤炎性水肿和增生反应,以及抑制TPA促进经甲基胆蒽启动的BALB/3T3细胞的转化作用。本实验结果表明,EGCG可能是绿茶多酚提取物中抑制TPA促癌作用的重要成分。

关键词：儿茶素佛波酯促癌作用

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绿茶对实验性大肠癌抑制作用的研究

河南医学研究 1995年第2期4卷 164-167页

作者：银平章程书钧赵进英祝庆蕃刘政国孔令非徐继跃张广甫党伟一吴凯彦 y.hara 河南省人民医院病理科中国医学科学院肿瘤研究所河南医科大学

本实验观察了绿茶儿茶素对１，２－ＤＭＨ诱发小鼠大肠癌的影响，结果显示：①绿茶多酚及绿茶水溶性提取物对１，２－ＤＭＨ诱发Ｃ＿５７ＢＬ小鼠大肠隐窝上皮细胞徽核及凋谢有明显的拮抗作用。本实验所用微核及凋谢的测定方法是一种简... 详细信息

本实验观察了绿茶儿茶素对１，２－ＤＭＨ诱发小鼠大肠癌的影响，结果显示：①绿茶多酚及绿茶水溶性提取物对１，２－ＤＭＨ诱发Ｃ＿５７ＢＬ小鼠大肠隐窝上皮细胞徽核及凋谢有明显的拮抗作用。本实验所用微核及凋谢的测定方法是一种简便、快速而且经济的抗结肠致癌物筛选方法。②绿茶几茶素对大肠癌有预防作用，其抗癌机制可能与绿茶儿茶素成分中超氧化物歧化酶及其它抗氧化剂清除癌组织中自由基有关。

关键词：绿茶儿茶素大肠肿瘤

耐氨四尾栅藻在甲烷发酵流出液中的生长及氮磷的脱除

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生物工程学报 1987年第4期 290-296页

作者：官崎龍雄王选良原慶明前川孝昭筑波大学大连轻工业学院

检查了耐氨四尾栅藻(Scenedesmus quadricauda)在甲烷发酵流出液中的生长情况。结果表明,该绿藻在1%和10%流出液中生长良好,而在20%流出液中不生长。在1%流出液中添加0—28mM氨,不影响该绿藻的生长速度常数,也不影响对数生长期的光合活... 详细信息

检查了耐氨四尾栅藻(Scenedesmus quadricauda)在甲烷发酵流出液中的生长情况。结果表明,该绿藻在1%和10%流出液中生长良好,而在20%流出液中不生长。在1%流出液中添加0—28mM氨,不影响该绿藻的生长速度常数,也不影响对数生长期的光合活力。10%流出液中的光合活力降低,但仍比得上1%流出液的活力。从电子显微图中看到,在不加氨1%流出液中生长的细胞,其淀粉颗粒很明显,并且随着加氨量的增加而变小。在10%流出液中生长的细胞的淀粉颗粒小,而且细胞膨胀,但是其叶绿体膜系统发育良好。这就是说,虽然在形态学上发生了变化,但是该绿藻在1%及10%流出液中的生长和生理学上,却没有什么变化。该绿藻在1%和10%流出液中,排除氨氮和磷酸磷的百分数,前者分别为99.7%和73.8%;后者分别为78.0%和62.8%。上述排除效率说明四尾栅藻可以用于家畜粪便甲烷发酵流出液的处理。

关键词：绿藻四尾栅藻流出液

Stabilization of a high-order harmonic generation seeded extreme ultraviolet free electron laser by time-synchronization control with electro-optic sampling

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High Power Laser Science and Engineering 2015年第2期3卷 1-10页

作者： H.Tomizawa T.Sato K.Ogawa K.Togawa T.Tanaka T.hara M.yabashi H.Tanaka T.Ishikawa T.Togashi S.Matsubara y.Okayasu T.Watanabe E.J.Takahashi K.Midorikawa M.Aoyama K.yamakawa S.Owada A.Iwasaki K.yamanouchi RIKEN SPring-8 Center Japan Synchrotron Radiation Research Institute RIKEN Center for Advanced Photonics Japan Atomic Energy Agency The University of Tokyo

A fully coherent free electron laser(FEL) seeded with a higher-order harmonic(HH) pulse from high-order harmonic generation(HHG) is successfully operated for a sufficiently prolonged time in pilot user experiments by using a timing drift feedback. For HHG-seeded FELs, the seeding laser pulses have to be synchronized with electron bunches. Despite seeded FELs being non-chaotic light sources in principle, external laser-seeded FELs are often unstable in practice because of a timing jitter and a drift between the seeding laser pulses and the accelerated electron bunches. Accordingly,we constructed a relative arrival-timing monitor based on non-invasive electro-optic sampling(EOS). The EOS monitor made uninterrupted shot-to-shot monitoring possible even during the seeded FEL operation. The EOS system was then used for arrival-timing feedback with an adjustability of 100 fs for continual operation of the HHG-seeded FEL. Using the EOS-based beam drift controlling system, the HHG-seeded FEL was operated over half a day with an effective hit rate of 20%–30%. The output pulse energy was 20 μJ at the 61.2 nm wavelength. Towards seeded FELs in the water window region, we investigated our upgrade plan to seed high-power FELs with HH photon energy of 30–100 e V and lase at shorter wavelengths of up to 2 nm through high-gain harmonic generation(HGHG) at the energy-upgraded SPring-8Compact SASE Source(SCSS) accelerator. We studied a benefit as well as the feasibility of the next HHG-seeded FEL machine with single-stage HGHG with tunability of a lasing wavelength.

关键词： arrival-timing monitor electro-optic sampling(EOS)

LONG -TERM REDUCTION IN THE IN- TRAOCULAR PRESSURE By LA- TANOPROST

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国际眼科杂志 2003年第1期3卷 44-45页

作者： H.hara H.Abe M.Shirakashi T.Fukuchi K.Suda J.Ueda K.yaoeda y.Tanaka Niigata University JapanNiigata University JapanNiigata University JapanNiigata University JapanNiigata University JapanNiigata University JapanNiigata University JapanNiigata University Japan

We conducted a retrospective analysis of the intraocular pressure (IOP) in 331 patients treated with latanoprost We studied 299 eyes in 177 patients with primary open angle glaucoma (POAG), 185 eyes in 106 patients with normal tension glaucoma (NTG), 48 eyes in 32 patients with secondary glaucoma (SG), and 23 eyes in 16 patients with primary angle

关键词：拉坦前列素眼内压下降长期减压作用回顾性分析

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固体气泡损伤探测器阈起源的实验判别

核技术 2002年第7期25卷 506-510页

作者：郭士伦李丽 Doke T Kikuchi J Terasawa K hara K Sakuma N yasuda N Murakami T 中国原子能科学研究院核物理研究所北京102413 Advanced Research Institute for Science and Engineering Waseda University National Institute of Radiological Science

用 5 0 0MeV/u56Fe,6 5 0MeV/u40Ar ,6 0 0MeV/u2 8Si和 180MeV/u4He对固体气泡损伤探测器 (T- 12型 )进行了实验研究 ,实验结果表明 ,固体气泡损伤探测器的阈特性可用临界能量损失率表征。在一般条件下 ,限定能量损失率在不同重离子产... 详细信息

用 5 0 0MeV/u56Fe,6 5 0MeV/u40Ar ,6 0 0MeV/u2 8Si和 180MeV/u4He对固体气泡损伤探测器 (T- 12型 )进行了实验研究 ,实验结果表明 ,固体气泡损伤探测器的阈特性可用临界能量损失率表征。在一般条件下 ,限定能量损失率在不同重离子产生径迹时不具有相同临界值 ,因此。

关键词：固体气泡损伤探测器阈起源临界能量损失率限定能量损失率