Search Results 1-20 of 135

  • Effect of thermal gradient on weathering of artificial soft rock  [in Japanese]

    MIYAMOTO Taku , KIYOTA Takashi , KATAGIRI Toshihiko

    … However, weathering of geomaterials is also an important factor of the slope failure. … The present study investigates the effect of temperature on the weathering of geomaterial. …

    SEISAN KENKYU 71(6), 1075-1078, 2019

    J-STAGE 

  • ABASIC PROPERTY AND INFLUENCE ON FLUIDITY OF VOKCANIC GLASS POWDER AND CLAY FRCTION  [in Japanese]

    TOMOYOSE Atsushi , NOGUCHI Takafumi , SODEYAMA Kenichi , HIGASHI Kazuro

    … <p>Volcanic ejecta comprises crystal mineral and pumice, sometimes weathering clay fraction in their natural condition. … And also Chemical composition, thermal analysis, and XRD showed that weathering proceeds from the surface of the particle. … That is because concentration of surface weathering layer. …

    Cement Science and Concrete Technology 72(1), 438-445, 2019

    J-STAGE 

  • No.1-7 Characteristics and Self-heating Behavior of Moatize Coals, Moatize Coal Basin, Mozambique

    UACIQUETE Dorcas L. E. , KATO Takahiro , OKAWA Hirokazu , SUGAWARA Katsuyasu

    … It is well known throughout the world that Moatize basin is a world class deposit for coking and thermal. … However, recently, occurrences of spontaneous combustion are being resisted in both in situ coal seams and stockpiles of washed products (coking coal and thermal coal). …

    Proceedings of Conference on Coal Science 54(0), 14-15, 2017

    J-STAGE 

  • Physical Rock Weathering: Linking Laboratory Experiments, Field Observations, and Natural Features  [in Japanese]

    MATSUOKA Norikazu , WARAGAI Tetsuya , WAKASA Sachi A.

    … <p> Physical rock weathering has been studied through laboratory experiments, field observations, and numerical modeling, but linking these approaches and applying the results to weathering features in the field are often problematic. … We review recent progress in three weathering processes—frost shattering, thermal fracturing, and lightning strikes—and explore better approaches to linking weathering processes and products. …

    Journal of Geography (Chigaku Zasshi) 126(3), 369-405, 2017

    J-STAGE 

  • The World of Color Science and Color Chemistry  [in Japanese]

    MASUDA Yutaka

    … Color science is the study of reflected light which, through human sensation, acts as a driving force for economic activity, whereas colorant chemistry takes into account studies of light absorption and color generation as well as weathering resistance and thermal characteristics. …

    Journal of the Japan Society of Colour Material 89(1), 22-28, 2016

    J-STAGE 

  • Rock Weathering Processes and Products on Martian Surface  [in Japanese]

    SATO Masato , HATTANJI Tsuyoshi , MATSUOKA Norikazu

    …  Weathering processes on Martian surface are among the essential issues for both understanding landform evolution and exploring water availability on Martian surface. … Studies are reviewed on various weathering processes on Martian surface based on images, data collected by rovers, and laboratory approaches. … Recent explorations by the Mars Exploration Rovers reveal that chemical weathering occurs on the surface of basaltic regolith. …

    Journal of Geography (Chigaku Zasshi) 125(1), 133-153, 2016

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  • Rock Weathering Processes and Products on Martian Surface  [in Japanese]

    佐藤 昌人 , 八反地 剛 , 松岡 憲知 , SATO Masato , HATTANJI Tsuyoshi , MATSUOKA Norikazu

    …  Weathering processes on Martian surface are among the essential issues for both understanding landform evolution and exploring water availability on Martian surface. … Studies are reviewed on various weathering processes on Martian surface based on images, data collected by rovers, and laboratory approaches. … Recent explorations by the Mars Exploration Rovers reveal that chemical weathering occurs on the surface of basaltic regolith. …

    地学雑誌 = Journal of Geography (Chigaku Zasshi) 125(1), 133-153, 2016

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  • Thermal environments of dry and wet seasons at Angkor monuments

    Waragai Tetsuya , Hiki Yusuke

    … This study carried out analysis of thermal condition of the monuments for dry and wet seasons. …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2015s(0), 100100, 2015

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  • Thermal change behavior of composite trussed rohze bridge with SRC structure  [in Japanese]

    Hashimoto Kunitaro , Okumura Shun , Sugiura Kunitomo , Taniguchi Nozomu , Fujiwara Yoshinori

    … In this research, to study the thermal behavior such as thermal stress and deformation of composite bridges with a SRC structure, a field measurement and a FE analysis were carried out for the composite trussed rohze bridge constructed by using weathering steel. …

    Kozo Kogaku Ronbunshu. A (Journal of Structural Engineering. A) 61A(0), 816-828, 2015

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  • The effect on the thermal environment for sandstone weathering at Angkor monuments

    Waragai Tetsuya

    … To clarify the sandstone weathering process, the thermal environment of some Angkor monuments is measured by data loggers and a thermography. … Regarding to thermal buffering of vegetation, restoration works involving clearing of vegetation is possible to accelerate the weathering. …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2014a(0), 82, 2014

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  • Development of a New On-line UV Irradiation Pyrolysis-GC/MS System for Rapid Evaluation of Photo, Thermal, and Oxidative Degradation of Polymeric Materials  [in Japanese]

    YUZAWA Tetsuro , WATANABE Chuichi , OHTANI Hajime

    … This method allows a rapid on-line analysis of volatile products released from a polymer sample during UV irradiation under photo, thermal and oxidative conditions. …

    KOBUNSHI RONBUNSHU 69(7), 334-345, 2012-07-25

    J-STAGE  References (8)

  • Ca and Mg stable isotope fractionation in calcium carbonate  [in Japanese]

    YOSHIMURA Toshihiro , TANIMIZU Masaharu

    … Recent improvements in thermal and plasma mass spectrometry have allowed the precise measurement of small differences in Ca and Mg isotopic compositions in CaCO<sub>3</sub>, and consequently, their isotopic fractionation has been considered to have complementary information regarding marine temperature reconstructed from conventional proxies. …

    Chikyukagaku 46(1), 33-49, 2012

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  • Periglacial Environment and Landscape Dynamics of the Swiss Alps : A Summary of 15 Years of Observations and Their Implications  [in Japanese]

    MATSUOKA Norikazu , IKEDA Atsushi

    …  Spacio-temporal variability of contemporary periglacial environments in the Swiss Alps is summarized on the basis of 15 years of field observations of rock weathering, permafrost creep, and soil movements, as well as other recent studies. … Rock debris derived from different parent rocks controls the types of rock glacier having different compositions, thermal characteristics, and dynamics. …

    Journal of Geography (Chigaku Zasshi) 120(3), 502-535, 2011-06-25

    J-STAGE  References (160) Cited by (3)

  • Field Observation of Rock Surface Temperature and Thermal Weathering Experiment of Limestone Composed Cone Karst at Yamazato, Motobu, Okinawa Island  [in Japanese]

    廣瀬 孝 , 玉城 玲奈 , Hirose Takashi , Tamaki Reina , 琉球大学法文学部 , もしもしホットライン , Faculty of Law and Letters University of the Ryukyus , MOSHI MOSHI HOTLINE INC

    本研究では,沖縄島本部町山里の円錐カルストを構成する石灰岩を対象に,風化作用の一つとして熱風化に着目し,その風化環境を探るための岩石表面の温度変化の野外観測と,岩石試料を用いた熱風化実験(加熱-冷却実験)を行った.その結果,本部町山里の円錐カルストを構成する石灰岩の表面温度は,最高で55.1 ℃を記録し,日較差は,最高で29.9 ℃であった.これらの値は,従来の研究と比較しても,高い値であった.ま …

    沖縄地理 (11), 21-32, 2011-06

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  • Effects of outdoor weathering on facial prosthetic elastomers

    ELENI Panagiota N. , KROKIDA Magdalini , POLYZOIS Gregory , GETTLEMAN Lawrence , BISHARAT Gasan I.

    Odontology : Official journal of the Society of the Nippon Dental University = 歯学 99(1), 68-76, 2011-01-01

    References (41)

  • Preliminary study on thermal weathering of limestone: in the case of grass-burning in Akiyoshi-dai Plateau  [in Japanese]

    羽田 麻美 , 藁谷 哲也

    Proceedings of the Institute of Natural Sciences, Nihon University (46), 97-105, 2011

  • On my study for allophane, halloysite and kaolinite  [in Japanese]

    Okada Kiyoshi

    … In my study on halloysite, formation of clay minerals from volcanic ash by weathering, especially in the Kanto area, was focused on the viewpoint of their chemical composition and clay mineral changes. … On kaolinite, thermal phase change of kaolin group minerals was investigated and a new model for the phase change different from the Brindley and Nakahira model was proposed. …

    Journal of the Clay Science Society of Japan (in Japanese) 49(2), 41-45, 2010

    J-STAGE 

  • Prediction of Effect of Future Temperature Rise on Sediment Production in Winter Season  [in Japanese]

    堤 大三 , 藤田 正治 , 泉山 寛明

    Weathering and erosion on bare slopes due to freeze and thaw action in winter season is one of the most important sources of sediment. … In the present study, we developed a numerical model to simulate the effect of freeze and thaw action on bare slope, combining atmosphere-subsurface thermal conductivity analysis. …

    京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B 52(B), 717-726, 2009-06-01

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