Search Results 1-20 of 559

  • Water quality of the Ohtakigawa River influenced by the Makio Dam and its effects on the water resource management  [in Japanese]

    横浜 良祐 , 宇佐見 亜希子 , 八木 明彦 , 城戸 由能

    … In this study, in order to analyze Ohtakigawa water quality affected by artificial infrastructures such as the Makio Dam, we mainly observed suspended solids (SS), Aluminum (Al) and Chlorophyll-a (Chl.a) in the Ohtakigawa river, where SS and Al prevent algae from growing, and Chl.a is contained in algae. …

    愛知工業大学研究報告 = Bulletin of Aichi Institute of Technology (54), 101-112, 2020-03-31

    IR 

  • Horizontal and vertical water quality distribution in Lake Suwa in the summer of 2019  [in Japanese]

    柳町 晴美 , 宮原 裕一

    … 2019年8月8日の諏訪湖では,SS,Chl-a,IL,Trans.は2003年以降の同時期の平均的な状況よりも改善されていた。 … 第1主成分は,SS,Chl-a,Trans.の変動を説明し,第2主成分はW.T.0m とTrans.の変動を説明するパターンである。 …

    環境科学年報 (42), 8-23, 2020-03

    IR 

  • Excitonic Coupling on a Heliobacterial Symmetrical Type-I Reaction Center: Comparison with Photosystem I

    Kitoh-Nishioka Hirotaka , Shigeta Yasuteru , Itoh Shigeru , Kimura Akihiro

    … The excitonic couplings among 54 bacteriochlorophylls-g (BChl)-g, 4 BChl-g′, and 2 Chl-aF pigments were calculated in the type-I homodimeric reaction center (RC) of Heliobacterium modesticaldum (hRC) and compared with those in the photosystem I (PSI) type-I heterodimeric RC. …

    The Journal of Physical Chemistry B 124(2), 389-403, 2020-01-16

    IR 

  • Structural basis for the adaptation and function of chlorophyll f in photosystem I

    Kato Koji , Shinoda Toshiyuki , Nagao Ryo , Akimoto Seiji , Suzuki Takehiro , Dohmae Naoshi , Chen Min , Allakhverdiev Suleyman I. , Shen Jian-Ren , Akita Fusamichi , Miyazaki Naoyuki , Tomo Tatsuya

    … Chlorophylls (Chl) play pivotal roles in energy capture, transfer and charge separation in photosynthesis. … Among Chls functioning in oxygenic photosynthesis, Chl f is the most red-shifted type first found in a cyanobacterium Halomicronema hongdechloris. … The location and function of Chl f in photosystems are not clear. …

    Nature Communications 11(1), 238, 2020-01-13

    IR 

  • Structural basis for the adaptation and function of chlorophyll f in photosystem I

    Kato Koji , Shinoda Toshiyuki , Nagao Ryo , Akimoto Seiji , Suzuki Takehiro , Dohmae Naoshi , Chen Min , Allakhverdiev Suleyman I. , Shen Jian-Ren , Akita Fusamichi , Miyazaki Naoyuki , Tomo Tatsuya

    … Chlorophylls (Chl) play pivotal roles in energy capture, transfer and charge separation in photosynthesis. … Among Chls functioning in oxygenic photosynthesis, Chl f is the most red-shifted type first found in a cyanobacterium Halomicronema hongdechloris. … The location and function of Chl f in photosystems are not clear. …

    Nature Communications 11(1), 238, 2020-01-13

    IR 

  • Detection of Current-rips (shiome) Using PALSAR/PALSAR-2

    ISOGUCHI Osamu , EBUCHI Naoto

    … <p>The Phased-Array L-band Synthetic Aperture Radar-2 (PALSAR-2) high-pass-filtered image is compared with the Moderate Resolution Imaging Spectroradiometer (MODIS) sea surface temperature (SST) and Chlrolophyll-a (Chl-a) images. … Moreover, the comparison with the Chl-a image represents some local Chl-a maxima along the SAR ridge patterns in the PALSAR-2 contrast image. …

    Journal of The Remote Sensing Society of Japan 40(Supplement), S1-S11, 2020

    J-STAGE 

  • Verification of Suitability of Fly-Ash-Shell Blocks for Algal Growth: Understanding Growth Characteristics of Periphytic Diatoms by Using Non-Distractive Measurement Method  [in Japanese]

    HONDA Masaki , IMAMURA Masahiro , KOBAYASHI Takuya , HIEI Yoshiko

    … <p>We evaluate the suitability of a fly-ash-ndash;shell blocks (FSBs) for periphytic diatom growth. … The increase of the periphytic diatom biomass (Chl-a) on the blocks with time was understood from image analysis using a color channel having a high correlation with Chl-a. …

    Journal of Japan Society on Water Environment 43(3), 79-86, 2020

    J-STAGE 

  • Empirical Study on Long-term Reoccurrence of <i>Microcystis</i> Blooms in an Enclosure Constructed in an Urban Park Pond.  [in Japanese]

    YAMAGISHI TOMOHIKO , NISHIMURA OSAMU , SUDO RYUICHI

    … blooms and changes of water quality items in the enclosure were investigated for two and a half years and compared with those in the urban park pond. … In the enclosure, the water temperature and concentrations of total phosphorus and particulate phosphorus showed seasonal changes similar to those in the urban park pond over two and a half years. …

    Japanese Journal of Water Treatment Biology 56(1), 1-15, 2020

    J-STAGE 

  • Classic Hodgkin lymphoma developing early after treatment of follicular lymphoma  [in Japanese]

    UEDA Norihiro , HASHIMOTO Ken , YAMAZOE Yumi , ADACHI Yoshiya , KIHARA Rika , KUWABARA Kyouko , FUJINO Masahiko , WATAMOTO Koichi

    … <p>There are few reports of a patient presenting with combined follicular lymphoma (FL) and classical Hodgkin lymphoma (cHL). … A 37-year-old Japanese man was diagnosed with FL with generalized lymphadenopathy and treated with R-CHOP. … Consequently, he was diagnosed with cHL in the bone marrow. … Identical clonality of FL and cHL tumor cells suggested identical immunoglobulin heavy chain gene rearrangements. …

    Rinsho Ketsueki 61(1), 39-43, 2020

    J-STAGE  Ichushi Web 

  • Relationship between Essential Fatty Acid Composition of Sediments and Species Richness of Benthic Animals in Paddy Field Ecosystems  [in Japanese]

    OSADA Yuki , FUJIBAYASHI Megumu , MARUO Chikako , TAKAHASHI Shinji , TANAKA Nobuyuki , NISHIMURA Osamu

    … However, it is not clear whether the EFA composition of food sources is a good indicator of the abundance and richness of animals in ecosystems. … In this study, field surveys of paddy fields were conducted to clarify the relationship between benthic animals and the EFA composition of sediment as a potential food source for those animals. … We analyzed the EFA composition and Chl-a in sediment and identified the benthic animals present. …

    Journal of Japan Society on Water Environment 43(1), 17-23, 2020

    J-STAGE 

  • Environmental DNA detection and quantification of invasive red-eared sliders, Trachemy scripta elegans, in ponds and the influence of water quality

    Kakuda Aozora , Doi Hideyuki , Souma Rio , Nagano Mariko , Minamoto Toshifumi , Katano Izumi

    … Environmental DNA (eDNA) is a powerful tool for monitoring the distribution of aquatic macro-organisms. … We found that there was a significant positive correlation between the observed number of red-eared sliders and the eDNA concentration in the ponds. … On comparing various water quality indicators, including dissolved nitrogen, dissolved phosphorous, organic matter, and chlorophyll a (Chl. …

    PeerJ (7), e8155, 2019-12-06

    IR 

  • Selective oxidation of B800 bacteriochlorophyll a in photosynthetic light-harvesting protein LH2

    Saga Yoshitaka , Kawano Kiyoshiro , Otsuka Yuji , Imanishi Michie , Kimura Yukihiro , Matsui Sayaka , Asakawa Hitoshi

    … Engineering chlorophyll (Chl) pigments that are bound to photosynthetic light-harvesting proteins is one promising strategy to regulate spectral coverage for photon capture and to improve the photosynthetic efficiency of these proteins. … Conversion from the bacteriochlorophyll (BChl) skeleton (7,8,17,18-tetrahydroporphyrin) to the Chl skeleton (17,18-dihydroporphyrin) produces the most drastic change of the spectral range of absorption by light-harvesting proteins. …

    Scientific Reports (9), 3636, 2019-03-06

    IR 

  • Horizontal and vertical water quality distribution in Lake Suwa in the summer of 2018  [in Japanese]

    柳町 晴美 , 宮原 裕一 , 山本 雅道

    … 2018年8月7日の諏訪湖では,SS,Chl-a,IL が2003年以降の同時期の平均に近い状態であった。 … 第1主成分は,SS,Chl-a,Trans.の変動を説明し,第2主成分はW.T.0m の変動を説明するパターンである。 …

    環境科学年報 (41), 45-59, 2019-03

    IR 

  • Experiment on the Effect of Algae Proliferation in the Sea Using Concrete Curing Compound Containing Amin Acid  [in Japanese]

    鶴江 智彦 , 山中 亮一 , 飯干 富広 , 赤平 大典 , 上月 康則

    沿岸域学会誌 = Journal of coastal zone studies 32(1), 47-56, 2019

  • Changes in Nutrient Concentrations and Species Composition of Phytoplankton in Fukuoka Bay, Japan during an18-year Period from1993to2010  [in Japanese]

    Satomichi Nahoko , Esaki Yasushi , Tada Kuninao

    … Chlorophyll aChl a)concentrations decreased from1993to2000, and remained almost unchanged from 2001 to 2005, but then increased from 2006 to 2010. … The decrease in DIP concentration may have caused the decrease in Chl a concentrations(1993-2005), but the changes in species composition of phytoplankton subsequently increased the Chl a concentrations from2006-2010in Fukuoka Bay. …

    Bulletin on Coastal Oceanography 56(2), 133-141, 2019

    J-STAGE 

  • Evaluation of water quality improvement measures in the outer moats of the edo castle using water quality simulation model  [in Japanese]

    iwata ryo , suzuki yoshiharu

    … 発生が悪臭や景観障害を招いている.</p><p></p><p>そこで本研究では,江戸城外濠の中でも市ヶ谷濠における水質シミュレーションモデルを構築・改良し,濠内の栄養塩類濃度やChl濃度などを再現した.また,水質改善策である外壕保全水路の検討を行った.</p><p></p><p>水質シミュレーションモデルは「水循環解析モデル(以下,OHAM)」と「生態系モデル」を …

    Proceeding of Annual Conference 32(0), 176, 2019

    J-STAGE 

  • Seasonal variability in phytoplankton carbon biomass and primary production, and their contribution to particulate carbon in the neritic area of Sagami Bay, Japan

    Ara Koichi , Fukuyama Satoshi , Okutsu Takeshi , Nagasaka Sadao , Shiomoto Akihiro

    … <p>Seasonal variations in environmental variables, chlorophyll <i>a</i> … (Chl-<i>a</i>), particulate carbon and nitrogen (PC and PN, respectively), phytoplankton carbon biomass (Ph-C) and primary production were investigated at a neritic station in Sagami Bay, Kanagawa, from January 2008 to December 2013. …

    Plankton and Benthos Research 14(4), 224-250, 2019

    J-STAGE 

  • Study on Supply of Trace Elements from the Atmosphere and Influence on Surface Ocean Primary Production  [in Japanese]

    Noguchi Tadateru , Zhang Jing , Guan Wenkai , Chen Bingzhang , Zhao Meixun , Zhu Yuanli , Ishizaka Joji , Matsuno Takeshi , Yasuda Ichiro

    <p></p>

    Abstracts of Annual Meeting of the Geochemical Society of Japan 66(0), 22, 2019

    J-STAGE 

  • EXAMINATION ON MORTALITY FACTORS OF <i>OYSTER CRASSOSTREA GIGAS</i> AND INFERENCE OF MECHANISM OF THE MORTALITY  [in Japanese]

    NAGAMA Kentaro , NAKASHITA Shinya , HAMAMOTO Takayuki , HIBINO Tadashi

    … As a result, the mechanism of oyster mortality that we assumed was well consistent with results of filed investigation conducted in oyster farm.</p> …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1117-I_1122, 2019

    J-STAGE 

  • SUPPLY AND CONSUMPTION MECHANISM OF ASH (MINERAL) TO DEPOSITED MUD  [in Japanese]

    MORITA Haruku , NAGAMA Kentaro , MASAOKA Takashi , HIBINO Tadashi

    … <p> A granulated coal ash (GCA) was scattered onto organically-enriched tidal flats deposited along the Kyobashi River flowing through the center of Hiroshima City. … In this study, major microalgae that flourished in the GCA layer were identified to examine the feasibility of establishing a diatomaceous farm in the sea where the decrease of diatoms is concerned. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1093-I_1098, 2019

    J-STAGE 

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