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Effects of solar ultraviolet radiation on the photochemical efficiency, photosynthetic pigments and biomass production of Spirulina platensis

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Progress in Natural Science:Materials International 2005年第5期15卷 477-480页

作者： teruo watanabe China Haikou 570102 Haikou International Commercial Centre 38 Hainan DIC Microalgae Co. Ltd.

Effects of solar ultraviolet radiation (UVR) on Spirulina platensis were studied by investigating its photochemical efficiency, photosynthetic pigments and biomass production while exposed to full spectrum solar radiation or depleted of UVR for understanding how and to what extent UVR influences its photosynthetic physiology and production. It was found that UVR brought about an extra inhibition of photochemical efficiency by 26%—30%. The greatest inhibition of photochemical efficiency in S. platensis was observed at noontime, and then recovered to some extent in late afternoon no matter which treatment they were exposed to. The contents of chlorophyll a, phycocyanin and carotenoids increased during initial stage of the exposure, but decreased with elongated exposure. UVR decreased the biomass yield by about 6%. It indicated that filtering out UVR of solar radiation would raise the productivity of S. platensis, which is an important factor that should be considered in the production.

关键词： ultraviolet radiation Spirulina platensis photochemical efficiency biomass production pigments.

COMBINED EFFECTS OF ULTRAVIOLET RADIATION AND TEMPERATURE ON MORPHOLOGY,PHOTOSYNTHESIS AND DNA OF ARTHROSPIRA (SPIRULINA) PLATENSIS(CYANOPHYTA)

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COMBINED EFFECTS OF ULTRAVIOLET RADIATION AND TEMPERATURE ON...

中国海洋湖沼学会藻类学分会第七届会员大会暨第十四次学术讨论会

作者： teruo watanabe E.Walter Helbling Hainan DIC Microalgae CO. LTD.Haikou International Commercial Centre 38Da Tong RoadHaikouHainan570102China Marine Biology Institute Shantou UniversityShantouGuangdong515063China Estación de Fotobiologia Playa Unión & Conscjo Nacional de Investigacioncs Científicas y Técnicas(CONICET)Casilla de Correos N° 15(9103)RawsonChubutArgentina

Natural levels of solar UVR were shown to break and alter the spiral structure of Arthrospira(Spirulina)platensis(Nordstedt)Gomont during ***,this phenomenon was not observed during summer at temperature of about 30℃... 详细信息

关键词： Arthrospira platensis cyanobacterium DNA damage morphology photosynthesis temperature UVR

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炎症反应在动脉粥样硬化发病学中的作用

中国动脉硬化杂志 2003年第7期11卷 706-708页

作者： Jianglin Fan teruo watanabe 王燕翻日本筑波大学心血管病实验室南华大学心血病研究所湖南省衡阳市421001

动脉粥样硬化及其并发症是西方国家和日本最常见的死亡原因。在过去十年中，尽管出现了几种学说或假说，但没有一种能够完整地解释动脉粥样硬化发病机制的全过程，因为此疾病与多种危险因子有关。不仅如此，现在还有一种被普遍接受的观... 详细信息

动脉粥样硬化及其并发症是西方国家和日本最常见的死亡原因。在过去十年中，尽管出现了几种学说或假说，但没有一种能够完整地解释动脉粥样硬化发病机制的全过程，因为此疾病与多种危险因子有关。不仅如此，现在还有一种被普遍接受的观点认为动脉粥样硬化是一种特殊的慢性炎症过程，这种炎症过程源于血浆脂蛋白、细胞组分(单核/巨噬细胞、T淋巴细胞、内皮细胞和平滑肌细胞)与动脉壁细胞外基质间的相互作用。

关键词：炎症反应动脉粥样硬化并发症发病机制发病学危险因子慢性炎症过程血浆脂蛋白动脉壁细胞外基质

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静止和充气培养条件下短期紫外辐射对钝顶螺旋藻光化学效率的影响

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水生生物学报 2005年第6期29卷 673-677页

作者：吴红艳高坤山渡辉夫中国科学院水生生物研究所武汉430072 汕头大学海洋生物研究所汕头515063 海南迪爱生微藻有限公司海口570102

为了研究短期太阳紫外辐射对钝顶螺旋藻的影响,作者将静止和充气培养的藻体,暴露在全波长太阳辐射PAB(PAR+UVA+UVB),去除UVB辐射PA(PAR+UVA)及切断所有紫外辐射的光合有效辐射P(PAR)三种光处理条件下,测定了其光化学效率的变化.结果表明... 详细信息

为了研究短期太阳紫外辐射对钝顶螺旋藻的影响,作者将静止和充气培养的藻体,暴露在全波长太阳辐射PAB(PAR+UVA+UVB),去除UVB辐射PA(PAR+UVA)及切断所有紫外辐射的光合有效辐射P(PAR)三种光处理条件下,测定了其光化学效率的变化.结果表明,紫外辐射(UVP)及光合有效辐射(PAR)均能导致钝顶螺旋藻的光化学效率降低,表现出了明显的光抑制,但是,UVR可导致更大程度的光抑制.充气培养条件下,与早晨(07:00)初始值相比,PAR导致了11%～20%的光抑制,而UVR(PAB-P)所产生的额外光抑制占9%～31%;静止培养条件下,UVR的存在使得螺旋藻的光化学效率趋近于零(无法检出).在两种培养条件下,藻细胞所受最大光抑制均发生在中午,下午(17:00)表现出不同程度的恢复.紫外辐射使得类胡萝卜素及藻蓝蛋白与叶绿素a含量的比例增大.与PAB和P相比,PA处理使得螺旋藻类胡萝卜素和藻蓝蛋白与叶绿素含量之比明显升高,UVA可能会诱导类胡萝卜素及藻蓝蛋白的合成.

关键词：太阳紫外辐射钝顶螺旋藻光化学效率色素

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Spatial variability of chemical tracers in surface snow along the traverse route from the coast to 1000 km inland at east Dronning Maud Land, Antarctica

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Chinese Journal of Polar Science 2003年第1期14卷 48-56页

作者： Toshitaka Suzuki Yoshinori Iizuka teruo Furukawa Kenichi Matsuoka Kokichi Kamiyama Okitsugu watanabe Yamagata University Kojirakawa cho 1-chomeNational Institute of Polar ResearchKaga 1-chomeNational Institute of Polar ResearchKaga 1-chomeInstitute of Low Temperature Science Hokkaido UniversityNational Institute of Polar ResearchKaga 1-chomeNational Institute of Polar ResearchKaga 1-chome Yamagata 990-8560 Itabashi kuTokyo 173-8515 Itabashi kuTokyo 173-8515 Kita-19 Nishi-8 Kita-ku Sapporo 060-0819Itabashi kuTokyo 173-8515 Itabashi kuTokyo 173-8515

We measured the spatial variability of Cl -, Na +, SO 2- 4, NO - 3 and 7Be concentrations in snow cover along the traverse route from S16 to Dome Fuji station in east Dronning Maud Land, Antarctica. The concentrations of Cl - and Na + at the coast exponentially decreased with distance from the coast up to 200 km inland. Between 200 1000 km inland, the concentrations of Na + were nearly constant. On the other hand, the concentrations of Cl - increased with distance beyond 750 km inland. Furthermore, the contribution factors between Cl - and Na + decreased and the Cl -/Na + ratio and the nssCl -/Cl - ratio increased toward the interior of the continent. These results indicate that sea salt aerosols are transported from the coastal region toward the inland region of the Antarctic continent, and that a source of Cl - other than sea salt exists in the inland plateau of Antarctica. The concentrations of SO 2- 4, NO - 3 and 7Be in snow were relatively high in the coastal region and the inland plateau region compared with those in the katabatic wind region.

关键词： Antarctica snow chemistry spatial variability atmospheric transport.

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Fitness Age Score and the Risk of Long-Term Care Insurance Certification—The Kyoto-Kameoka Longitudinal Study

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Open Journal of Epidemiology 2017年第2期7卷 190-200页

作者： Tsukasa Yoshida Misaka Kimura Yosuke Yamada Keiichi Yokoyama Tatsuro Ishihara Yasuko Yoshinaka Aya Itoi Yuya watanabe Noriyuki Kida teruo Nomura Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan Department of Nutrition and Metabolism National Institutes of Biomedical Innovation Health and Nutrition Tokyo Japan Senior Citizen’s Welfare Section Kameoka City Government Kyoto Japan Faculty of Health and Medical Sciences Kyoto Gakuen University Kyoto Japan Non-Profit Organization Genki-Up AGE Project Inc. Kyoto Japan Faculty of Economics and Business Administration Kyoto Gakuen University Kyoto Japan Graduate School of Health and Sports Science Doshisha University Kyoto Japan Department of Health Sports and Nutrition Faculty of Health and Welfare Kobe Women’s University Hyogo Japan Faculty of Health and Sports Science Doshisha University Kyoto Japan

Long-Term Care Insurance System has been introduced to provide appropriate care for the elderly who needs nursing care in Japan. Physical function is one of most important function for the elderly to live independently. A previous study had established a Fitness Age Score (FAS) based on a theory for biomarker of aging. This study clarified whether the FAS could be used to predict the need for certification of long-term care (CLTC) in independent elderly people. We included 939 independent, community-dwelling-elderly (average age, 74.4 years) whose physical function was measured and for whom the CLTC was tracked for 24 months. The FAS comprised five physical fitness items: Walking time, grip strength, one-leg standing, vertical jump, and functional reach test. Based on the FAS, we calculated the odds ratio (OR) for the CLTC. Receiver operating characteristic (ROC) curves and the area under the curve (AUC) was used for further analysis. We also used the Youden Index (YI), minimum distance method (MD), and two-graph ROC method (TG) to calculate cutoff values (CVs) for screening. We divided subjects into the low and high physical fitness group with CVs. We developed cumulative CLTC curves using the Kaplan-Meier method. Sixteen people could not be tracked for the full 24 months. The measurement of FAS was completed for 798 people, of whom 28 became CLTC. The measurement of FAS was not completed for 125 people, of whom 21 became CLTC. The CLTC OR for people with incomplete FAS was 5.553. The AUC was 0.72 (p < 0.001). The CVs for the FAS were -0.29 for YI (sensitivity, 92.9% and specificity, 40.4%), -1.23 for MD (57.1% and 73.4%), and -0.81 for TG (60.7% and 60.9%). The cumulative CLTC curves according to CVs all showed significant differences (p = 0.000 - 0.020). In conclusion, the FAS can be used to predict CLTC.

关键词： Elderly Physical Function Long-Term Care Screening Fitness Age Score (FAS)