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Geochemistry of Triassic Siliceous Rocks of the Muyinhe Formation in the Changning-Menglian Belt of Southwest China

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Journal of Earth Science 2016年第3期27卷 403-411页

作者： tsuyoshi ito Xin Qian Qinglai Feng State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Stratigraphy and Tectonics Research Group Institute of Geology and Geoinformation Geological Survey of Japan School of Earth Sciences China University of Geosciences

The Changning-Menglian belt, distributed over southwestern Yunnan Province in Southwest China, contains oceanic rocks that are considered to be remnants of the Paleotethys. This study observed Triassic siliceous rocks of the Muyinhe Formation in the Changning-Menglian belt and analyzed their geochemistry. The samples have high concentrations of SiO2（81.65 wt.%–88.38 wt.%; average： 84.99 wt.%±2.14 wt.%）. Most of the samples were plotted in the non-hydrothermal field on the Al-Fe-Mn diagram. Most of the samples were plotted in the continental margin field on the Fe2O3/TiO2-Al2O3/（Al2O3＋Fe2O3） and（La/Ce）N-Al2O3/（Al2O3＋Fe2O3） diagrams. Moreover, the samples show a flat REE（rare earth element） pattern normalized to NASC（North America shale composite）. These geochemical results, in addition to the lack of rhythmical bedding of the siliceous rocks, strongly suggest that the siliceous rocks are unlikely to represent pelagic deposits. Although previous studies have suggested that the siliceous rocks are pelagic deposits, the present results indicate that the extent of the pelagic ocean basins in the Paleotethys during the Triassic is probably less than previously believed. These non-pelagic deposits may represent the closure stage of the Paleotethys.

关键词： geochemistry Triassic siliceous rock Paleotethys Muyinhe Formation Changning-Menglian belt

Uneven Distribution of Pseudotormentus De Wever et Caridroit(Radiolaria,Protozoa):Provincialism of a Permian Planktonic Microorganism

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Acta Geologica Sinica(English Edition) 2016年第5期90卷 1598-1610页

作者： ito tsuyoshi FENG Qinglai MATSUOKA Atsushi State Key Laboratory of Geo-processes and Mineral Resources China University of Geosciences Graduate School of Science and Technology Niigata University Research Institute of Geology and Geoinformation Geological Survey of Japan Department of Geology Faculty of ScienceNiigata University

The Permian planktonic distribution is not well known,in contrast to other fossil distributions of nekton and *** are representative microfossils of plankton in the Permian *** study compares both correlated radiolarian occurrences（Pseudotormentus De Wever et Caridroit and Quadriremis Nazarov et Ormiston） in literature data from the Pacific Rim and quantitative data from the Liuhuang and Gujingling sections in South *** distributions are concentrated in the Panthalassa,whereas Quadriremis occurrences are distributed over both the Panthalassa and the *** uneven distribution of Pseudotormentus seems to have been controlled by a difference in the oceanic basins,indicating the presence of faunal differences in Permian planktonic microorganisms between the Panthalassa and the *** other words,this study infers the provincialism of Permian planktonic *** uneven distribution is explainable by a hypothesis that Pseudotormentus was strongly affected by a Panthalassan equatorial current.

关键词： palaeobiogeography Palaeotethys Panthalassa Permian radiolaria Pseudotormentus Quadriremis

Guadalupian (Middle Permian) Radiolarian and Sponge Spicule Faunas from the Bancheng Formation of the Qinzhou Allochthon,South China

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Journal of Earth Science 2013年第2期24卷 145-156页

作者： ito tsuyoshi 张磊冯庆来 Matsuoka Atsushi State Key Laboratory for Geological Processes and Mineral Resources China University of Geosciences Graduate School of Science and Technology Niigata University Department of Geology Faculty of ScienceNiigata University

The Gujingling （古井岭） Section in Xiaodong （小董）, Guangxi （广西） Zhuang Autonomous Region, China, consists of cherts and siliceous siltstones, which belongs to the Bancheng （板城）Formation of the Qinzhou （钦州） allochthon. Three successive radiolarian assemblage-zones related to the Guadalupian （Middle Permian） appear in the section in the following ascending order： Pseudoalbaillella sp. aff. Pseudoaibailleila longicornis-Pseudoalbaillella fusiformis, Follicucuilus monacanthus, and Follicucuilus scholasticus-Foilicucullus porrectus. The radiolarian content in this section is generally greater than that of sponge spicules. The radiolarian fauna commonly consists of abundant Albaillellaria and spherical radiolaria with minor Latentifistularia and Entactinaria. The sponge fauna is composed mainly of hexactinellids with minor demosponges. These siliceous fossil faunal features, comparable with those in a deep basin of the western belt of the Phosphoria Basin in the western United States, indicate that the Bancheng Formation in the Gujingling Section was deposited in a basin deeper than 1 000 m. The siliceous siltstones in the section are characterized by inclusion of silt-sized quartz and no inclusion of sand-sized materials, suggesting that the Gujingling Section was located at least a few hundred kilometers from the South China Block in the Guadalupian.

关键词： radiolarian fossil sponge spicule Guadalupian (Middle Permian) Bancheng Formation Qinzhou allochthon paleobathymerry.

二叠系乐平统疑似罩笼虫(放射虫)在华南广西地区的发现及其演化意义

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微体古生物学报 2022年第4期39卷 316-327页

作者：张磊吴俊常珊 MARIE Béatrice Forel 王夏 ito tsuyoshi 冯庆来何卫红刘倩李星霖 TANIEL Danelian 成都理工大学油气藏地质及开发工程国家重点实验室成都610059 成都理工大学沉积地质研究院成都610059 自然资源部沉积盆地与油气资源重点实验室成都610081 中国地质调查局武汉地质调查中心(中南地质科技创新中心) 武汉430205 古生物与地质环境演化湖北省重点实验室武汉430205 湖北师范大学城市与环境学院黄石435002 Centre de Recherche en Paléontologie–Paris UMR7207MNHN-CNRS-Sorbonne UniversitéMuséum National d'Histoire Naturelle75005 ParisFrance Research Institute of Geology and Geoinformation Geological Survey of JapanTsukubaIbaraki 305-8567Japan 地球科学学院中国地质大学(武汉)武汉430074 UniversitéLille CNRSF-59000 LilleFrance

由于二叠纪罩笼虫化石材料极度稀缺,我们对罩笼虫从古生代向中生代类型演化的过程仍然一无所知。本文在广西晚二叠世大隆组与领薅组中报道了少量疑似罩笼虫化石。它们的形态简单,与三叠纪的罩笼虫属Bipedis形态相似,但缺少外饰,可能是... 详细信息

由于二叠纪罩笼虫化石材料极度稀缺,我们对罩笼虫从古生代向中生代类型演化的过程仍然一无所知。本文在广西晚二叠世大隆组与领薅组中报道了少量疑似罩笼虫化石。它们的形态简单,与三叠纪的罩笼虫属Bipedis形态相似,但缺少外饰,可能是中生代罩笼虫的先驱分子。如果本文描述的这些?Bipedis化石真属于罩笼虫目,那么该目从石炭纪晚期到二叠纪的演化可能经历了一段形态简化的阶段;在早三叠世,伴随其辐射过程,它们的形态也开始逐渐变得复杂。这些化石形态上介于古生代和中生代的罩笼虫之间,它们在吴家坪阶-长兴阶界线附近的出现可能是二叠-三叠纪之交深水放射虫由阿尔拜虫向罩笼虫动物群转变的序曲。

关键词：放射虫罩笼虫先驱分子二叠纪三叠纪

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Integrated Radiolarian and Conodont Biostratigraphy of the Middle to Late Permian Linghao Formation in Northwestern Guangxi, South China

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Acta Geologica Sinica(English Edition) 2021年第6期95卷 1984-1997页

作者： ZHANG Lei WU Jun YUAN Dongxun Marie Beatrice FOREL CHANG Shan Maliha Zareen KHAN FENG Qinglai HE Weihong MA Qiangfen Taniel DANELIAN Martial CARIDROIT tsuyoshi ito School of Earth Sciences China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China Wuhan Institute of Geology and Mineral Resources Wuhan 430223China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Centre de Recherche en Paleontologie-Paris UMR7207MNHN-CNRS-Sorbonne UniversiteParis 750005France State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China Universite Lille CNRSUMR 9198-Evo-Eco-PaleoF-59000 LilleFrance Research Institute of Geology and Geoinformation Geological Survey of JapanAISTTsukubaIbaraki 305-8567Japan

The Permian radiolarian zones and their correlations with conodont zones or other chronostratigraphic schemes are still under debate. In this study, four genera, 21 species and two subspecies of radiolarians together with one genus and six species of conodonts were recovered from the Linghao Formation cropping out at the Longwangpo(LWP) section, northwestern Guangxi, South China. Six radiolarian interval zones and one abundance zone are recognized in the section, namely in ascending order, the Follicucullus scholasticus, Albaillella cavitata, A. protolevis, A. levis, A. excelsa, A. triangularis Interval zones and A. yaoi Abundance Zone. They are correlated with the Clarkina dukouensis, C. guangyuanensis and C. orientalis conodont zones recognized at the same section. Based on our data, the F. scholasticus Interval Zone and the lowermost part of A. cavitata Interval Zone are recognized to be upper Capitanian age, whereas the four Albaillella Interval zones are of Lopingian age(Wuchiapingian to the late Changhsingian). Two previously known Changhsingian radiolarian zones, namely the A. triangularis and A. yaoi Interval zones, should be extended down to the uppermost Wuchiapingian in this studied section.

关键词： biostratigraphy radiolaria conodont elements Guadalupian/Capitanian–Lopingian Linghao Formation Guangxi

Land-Ocean Linkage: Pelagic Cherts in Mesozoic Neritic-Terrestrial Sequences in East Asia

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Open Journal of Geology 2019年第10期9卷 551-553页

作者： Atsushi Matsuoka tsuyoshi ito Yusuke Sakai Department of Geology Niigata University Niigata Japan Research Institute of Geology and Geoinformation Geological Survey of Japan AIST Tsukuba Japan Graduate School of Science and Technology Niigata University Niigata Japan Ono City Board of Education Ono Japan

Chert clast-bearing epi-continental neritic-terrestrial Jurassic and Cretaceous sequences are sporadically distributed in southwestern Japan. Typical and geological entities are the Torinosu Group and Tetori Group. Radiolarian dating of chert clasts enables us to discuss denudation stages of mid Mesozoic accretionary complexes. Chert clast-dominated conglomerate can be used for identifying marine beds within terrestrial sequences.

关键词： Pelagic Radiolarian Chert Conglomerate Accretionary Complex Neritic-Terrigenous Sediments

中二叠世放射虫Pseudoalbaillella globosa的一个新亚种及其形态变异（英文）

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微体古生物学报 2016年第4期33卷 436-443页

作者：伊藤刚冯庆来松冈笃中国科学院南京地质古生物研究所产业技术综合研究所地质调查所中国地质大学(武汉)地质过程与矿产资源国家重点实验室新泻大学地质系

本文描述了产自广西小董中二叠统板城组的一个放射虫新亚种Pseudoalbaillella globosa guiglobosa,该亚种与*** et Imoto的区别在于具有较大的假胸部和较短的假腹部。除壳体大小外,***还具有多种形态的顶锥和假腹部,可能还有其它亚种存在。

关键词： Pseudoalbaillella globosa 放射虫形态变异板城组中二叠世广西

Application of Simple Adaptive Control to Water Hydraulic Servo Cylinder System

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Chinese Journal of Mechanical Engineering 2012年第5期25卷 882-888页

作者： ito Kazuhisa YAMADA tsuyoshi IKEO Shigeru TAKAHASHI Koji College of Systems Engineering and Science Shibaura Institute of Technology Saitama 3378570 Japan Graduate School of Mechanical Engineering Tottori UniversityTottori 6808552 Japan Department of Mechanical Engineering Sophia UniversityTokyo 1028554 Japan

Although conventional model reference adaptive control （MRAC） achieves good tracking performance for cylinder control, the controller structure is much more complicated and has less robustness to disturbance in real applications. This paper discusses the use of simple adaptive control （SAC） for positioning a water hydraulic servo cylinder system. Compared with MRAC, SAC has a simpler and lower order structure, i.e., higher feasibility. The control performance of SAC is examined and evaluated on a water hydraulic servo cylinder system. With the recent increased concerns over global environmental problems, the water hydraulic technique using pure tap water as a pressure medium has become a new drive source comparable to electric, oil hydraulic, and pneumatic drive systems. This technique is also preferred because of its high power density, high safety against fire hazards in production plants, and easy availability. However, the main problems for precise control in a water hydraulic system are steady state errors and overshoot due to its large friction torque and considerable leakage flow. MRAC has been already applied to compensate for these effects, and better control performances have been obtained. However, there have been no reports on the application of SAC for water hydraulics. To make clear the merits of SAC, the tracking control performance and robustness are discussed based on experimental results. SAC is confirmed to give better tracking performance compared with PI control, and a control precision comparable to MRAC （within 10 μm of the reference position） and higher robustness to parameter change, despite the simple controller. The research results ensure a wider application of simple adaptive control in real mechanical systems.

关键词： water hydraulics servo cylinder system positioning control simple adaptive control

Chemogenetic activation of G12 signaling enhances adipose tissue browning

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Signal Transduction and Targeted Therapy 2023年第9期8卷 3923-3926页

作者： Yuki Ono Ryo ito Kaito Arai Gurdeep Singh tsuyoshi Saitoh Robert BRussell Francesco Raimondi Junken Aoki Juro Sakai Asuka Inoue Molecular and Cellular Biochemistry Graduate School of Pharmaceutical SciencesTohoku UniversitySendaiMiyagi 980-8578Japan Division of Molecular Physiology and Metabolism Graduate School of MedicineTohoku UniversitySendaiMiyagi 980-8574Japan Bioquant Heidelberg UniversityIm Neuenheimer Feld 26769120 HeidelbergGermany Biochemie Zentrum Heidelberg(BZH) Heidelberg UniversityIm Neuenheimer Feld 32869120 HeidelbergGermany International Institute for Integrative Sleep Medicine(WPI-IIIS) University of Tsukuba1-1-1 TennodaiTsukubaIbaraki 305-8575Japan Graduate School of Comprehensive Human Sciences University of Tsukuba1-1-1 TennodaiTsukubaIbaraki 305-8575Japan Laboratorio di Biologia Bio@SNS Scuola Normale SuperiorePiazza dei Cavalieri 7Pisa 56126Italy Department of Health Chemistry Graduate School of Pharmaceutical SciencesThe University of TokyoBunkyo-kuTokyo 113-0033Japan Division of Metabolic Medicine Research Center for Advanced Science and TechnologyThe University of TokyoMeguro-kuTokyo 153-8904Japan

Dear Editor,Beige adipocytes,which increase energy expenditure by dissipating energy as heat,have gained attention as a therapeutic target for combating obesity.1 Adipocytes express many types of G-protein-coupled receptors(GPCRs),each of which has a unique preference for the Gs,Gi,Gq,and G12 *** the function of Gs-coupledβ-adrenergic receptors in beige adipocyte induction is well established,2 little is known about the function of G12-coupled GPCRs beyond its suppressive roles in white adipocyte maturation.3 In this study,we generated transgenic mice conditionally expressing a G12-coupled designer GPCR using a Cre-loxP system and investigated the potential effects of G12 signaling on adipocyte biology.

关键词： activation gained expressing