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Yookoso! Media ed.

Carbon cycle variability in tropical Atlantic across two Early Eocene hyperthermals

2004年

作者： yasu-Hiko Tohsaku

来源：畅想之星图书光盘版（南... 评论

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Geoscience Frontiers 2021年第2期12卷 521-530页

作者： Shijun Jiang Ying Cui yasu Wang Institute of Groundwater and Earth Sciences Jinan UniversityGuangzhou510632China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai519082China Department of Earth and Environmental Studies Montclair State UniversityMontclairNJ07043USA

Early Eocene hyperthermals are geologically short-lived global warming events and represent fundamental perturbations to the global carbon cycle and the Earth’s ecosystem due to massive additions of isotopically light carbon to the ocean-atmosphere *** serve as ancient analogs for understanding how the oceanic carbonate system and surface-ocean ecosystem would respond to ongoing and future climate ***,we present a continuous carbonate record across the Eocene Thermal Maximum 2(ETM2 or H1,ca.54.1 Ma)and H2(ca.54 Ma)events from an expanded section at Ocean Drilling Program Site 1258 in tropical *** abundant calcareous nannofossils and moderate carbonate content throughout the studied interval suggest this record was deposited above the calcite compensation depth(CCD),but below the lysocline and under the influence of terrestrial *** Earth system model cGENIE is used to simulate the carbon cycle dynamics across the ETM2 and H2 to offer insights on the mechanism of the rapid warming and subsequent recovery in climate and *** model suggests moderate changes in ocean pH(0.1–0.2 unit)for the two scenarios,biogenic methane from a rechargeable methane capacitor and organic matter oxidation from thawing of the *** pH changes are consistent with a recent independent pH estimate across the ETM2 using boron *** carbon emission flux during the ETM2 is at least an order of magnitude smaller than that during the Paleocene–Eocene Thermal Maximum(PETM)(0.015–0.05 Pg C yr^(-1)vs.0.3–1.7 Pg C yr^(-1)).The comparable pre-and post-event carbonate contents suggest the lysocline did not over deepen following the ETM2 at this tropical Atlantic site,indicating spatial heterogeneity in the carbonate system due to strong dilution influence from terrestrial weathering and riverine discharge at Site 1258.

关键词： Early Eocene hyperthermals Oceanic carbonate system Stable carbon and oxygen isotopes Earth system modeling Tropical Atlantic cGENIE

Experimental Study on Performance of a Closed Wet Cooling Tower for Air Wet-Bulb Temperature near 0°C

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Journal of Thermal Science 2019年第5期28卷 1015-1023页

作者： ZHOU yasu ZHANG Pan ZHAO Jingde YANG Honghai BAI Yufeng College of Environmental Science and Engineering Donghua University

Closed wet cooling towers(CWCTs) are used widely because of their better water quality and smaller water consumption. However, the operating parameters shown in the technical documents are only for rated conditions in summer, not for any other conditions, especially in low air wet-bulb temperature areas such as those near 0℃. In addition, CWCTs often fail to achieve the designed cooling effect at low air wet-bulb temperatures. A experiment set of CWCT was built, and the performance of the CWCT at low air wet-bulb temperature near 0℃ was investigated. The impact of the operating parameters(air flow rate, cooling water flow rate, and spray water flow rate) on the heat and mass transfer performance of the CWCT was measured and analyzed. The results show the cooling performance of the CWCT at an air wet-bulb temperature 0℃, 2℃, and 4℃ is about 47%–63% of the rated operating condition;the optimal operating parameters of these conditions for the CWCT are just the same as those of the rated operating condition in summer. According to the experimental results, some operating advices are given.

关键词： closed wet cooling tower performance of cooling tower low air wet-bulb temperature rated operating parameters evaluation index

Exploration of the PIPP Financing Model in Brownfield Remediation

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China City Planning Review 2017年第1期26卷 46-51页

作者： Fan Lijun Dai yasu Zhao Qinna Li Min(译) School of Management and School of Economy of Hefei University of Technology School of Management of Hefei University of Technology 不详

Lack of adequate and affordable financing is the most significant obstacle to brownfield *** paper identifies the financing barriers of PPP(Public-Private Partnership)model to brownfi eld reuse,develops a PIPP(Public Intermediary Private Partnerships)fi nancing model,and discusses its operating mechanism and component elements from the aspects of its driving force,participation forms,and profi ***,it puts forward the specifi c operating plan and safeguard measures of the PIPP fi nancing model in brownfi eld remediation in China.

关键词： brownfield brownfield remediation financing model PIPP

Composite Higgs Boson in the Unified Subquark Model of All Fundamental Particles and Forces

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Journal of Modern Physics 2014年第5期5卷 205-208页

作者： Hidezumi Terazawa Masaki yasuè 1Center of Asia and Oceania for Science (CAOS) Higashi-kurume Japan 2Midlands Academy of Business & Technology (MABT) Leicester UK Department of Physics Tokai University Hiratsuka Japan

In the unified subquark model of all fundamental particles and forces, the mass of the Higgs boson in the standard model of electroweak interactions (mH) is predicted to be about (where mw is the mass of the charged weak boson), which agrees well with the experimental values of 125 - 126 GeV recently found by the ATLAS and CMS Collaborations at the LHC. It seems to indicate that the Higgs boson is a composite of the iso-doublet subquark-antisubquark pairs well described by the unified subquark model with either one of subquark masses vanishing or being very small compared to the other.

关键词： Composite Higgs Boson Unified Subquark Model Higgs Boson Mass Subquark Masses

FORMATIVE MECHANISM OF AKAISHIMOUNTAINSAND ENREI BASININ CENTRAL JAPAN

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Geotectonica et Metallogenia 2001年第1期25卷 45-50页

作者： yasu'uchi KUBOTA Takao YANO Oyo Co.Ltd. 3-1-30 MinagaSaeki-kuHiroshima731-5124Japan Department of Environmental Science Faculty of Education and Regional ScienceTottori UniversityTottori680-8551Japan

1 IntroductionIt is common in mobile belts that uplifting mountains are neighbored by synchronously subsiding *** coupling mechanism of such subsidence and uplift is an important target to clarify the dynamics of mobile *** investigate the coupled mountain uplift and basin subsidence in the Central Japan highland,the junction of three island arcs (the Northeast Japan,the Southwest Japan and the Izu-Ogasawara arcs).The highland over 3 000 m in height is composed of mountain ranges,plateaus and intramountain basins (Fig.1).

关键词： NNE FORMATIVE MECHANISM OF AKAISHIMOUNTAINSAND ENREI BASININ CENTRAL JAPAN

Quality of Service on Linux for the Atlas TDAQ Event Building Network

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International Conference on Computing in High Energy and Nuclear Physics 2001年第1期 656-659页

作者： Y.yasu Y.Nagasaka 等 HighEnergyAcceleratorResearchOrganization Japan HiroshimaInstituteofTechnology Japan

Congestion control for packets sent on a network is important for DAQ systems that contain an event builder using switching network *** of Service(QoS) is a technique for congestion *** Linux releases provide QoS in the kernel to manage network *** have analyzed the packet-loss and packet distribution for the event builder prototype of the Atlas TDAQ *** used PC/Linux with Gigabit Ethernet network as the *** result showed that QoS using CBQ and TBF eliminated packet loss on UDP/IP transfer while the UDP/IP transfer in best effort made lots of packet *** result also showed that the QoS overhead was *** concluded that QoS on Linux performed efficiently in TCP/IP and UDP/IP and will have an important role of the Atlas TDAQ system.

关键词： Atlas 数据处理数据流管理拥挤控制

Cretaceous integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 1229-1289页

作者： Dangpeng XI Guobiao LI Shijun JIANG Xin RAO Tian JIANG Tianyang WANG Zuohuan QIN yasu WANG Jianzhong JIA Muhammad KAMRAN Zhongye SHI Yuyang WU Panxi WANG Lixin SUN Qinggao ZENG Xiaoqiao WAN State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China College of Oceanography Hohai UniversityNanjing 213200China Key Laboratory of Palaeobiology and Petroleum Stratigraphy Nanjing Institute of Geology and PaleontologyChinese Academy of SciencesNanjing 210008China State Key Laboratory of Tibetan Plateau Earth System Environmentand Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China China National Offshore Oil Corporation Limited Beijing 100028China Shanghai Science and Technology Museum Shanghai 200120China Xizang Bureau of Geological and Mineral Exploration and Development Lhasa 850000China Tianjin Geological Survey Center of China Geological Survey Tianjin 300170China

The Cretaceous Period is a vital time interval in deciphering the evolutionary history of the Neo-Tethys Ocean and the convergence of different plates and blocks across the Qinghai-Tibetan Plateau.A detailed stratigraphic framework and paleogeographic patterns are the basis for understanding the evolution of the Neo-Tethys Ocean and the formation of the QinghaiTibetan ***,the Cretaceous stratigraphy,biota,paleogeography,and major geological events in the Qinghai-Tibetan Plateau are analyzed to establish an integrative stratigraphic framework,reconstruct the paleogeography during the Cretaceous Period,and decode the history of the major geological *** Cretaceous rocks of the Qinghai-Tibetan Plateau and its surrounding area are predominantly marine deposits,with a small amount of interbedded marine-terrestrial and terrestrial *** Indus-Yarlung Tsangpo Suture Zone was responsible for the deposition of deep marine sediments dominated by ophiolite suites and radiolarian *** the south,the Tethys Himalayas and Indus Basin received marine sediments of varying depths and lithology;to the north,the Xigaze and Ladakh forearc basins are also filled with marine *** Lhasa Block,Karakorum Block,western Tarim Basin,and West Burma block consist of shallow marine,interbedded marine-terrestrial,and terrestrial *** Qiangtang Basin and other areas are dominated by terrestrial *** Cretaceous strata of the Qinghai-Tibetan Plateau and its surrounding areas are widely distributed and diversified,with abundant foraminifera,calcareous nannofossils,radiolarians,ammonites,bivalves,and *** the basis of integrated lithostratigraphic,biostratigraphic,geochronologic,and chemostratigraphic analyses,we proposed herein a comprehensive stratigraphic framework for the Cretaceous Period of the eastern *** analyzing the Cretaceous biota of different biogeographic zones from eastern Neo-Tethys and its surrounding a

关键词： Qinghai-Tibetan Plateau Tethys Cretaceous Stratigraphy Biota Paleogeography

Study on Volatile Oil Components and Total Anti-oxidation Capacity and Simulated SOD Activity of Leaves from Michelia chapensis and M. fovelata

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Chinese Forestry Science and Technology 2006年第3期5卷 36-43页

作者： HE Kaiyue ZHANG Shuangquan LI Xiaochu FAN yasu LI Baocun Nanjing Forestry Universiry Nanjing 210037 P. R. China Nanjing Normal Universiry Nanjing 210097 P. R. China Jiangsu Forestry Academy of Science Nanjing 211153 P. R. China

The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata *** Dandy were isolated by organic solvent extraction and their components were analyzed and quantified by GC/MS. Then, the total anti-oxidation capacity and simulated SOD activity were tested. Forty-four compounds in M. chapensis were identified and the main constituents are aromatic (11.057%), ester (5.041%) and terpenoid compounds (19.772%). Fifty-two compounds in M. foveolata were identified, and their main constituents are aromatic (21.293%), alcohol (17.403%), alkene (6.909%), ester (5.657%) and alkane compounds (5.134%). The results showed that the two oils have strong anti-oxidation capacity and simulated SOD activity. The total anti-oxidation capacities were the highest when the volatile oil from M. foveolata was diluted by 50 times and that from *** by 100 times. The simulated SOD activity of volatile oil from M. chapensis was higher than that from M. foveolata, and CuZn-SODs in the two oils held 73%-74% of the total SOD. These results will provide scientific foundation for the exploration of the bioactivity of M. chapensis and M. foveolata.

关键词： Michelia volatile oil chemical components total anti-oxidation capacity simulated SOD activity