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Color reflectance of Chinese loess and its implications for climate gradient changes during the last two glacial-interglacial cycles

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Color reflectance of Chinese loess and its implications for ...

中国科学院地质与地球物理研究所2003学术年会

作者： s.l.yang and Z.l.Ding Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing,China

To examine the relationship between color changes of loess deposits and paleoclimate conditions,a north-south transect consisting of twelve loess sections were studied. Color reflectance was measured on loess-paleosol... 详细信息

关键词： Chinese loess Color reflectance Giacial-intergiacial cycles Weathering intensity

Comparison of particle size characteristics of the Tertiary 'red clay' and Pleistocene loess in the Chinese loess Plateau:implications for origin and sources of the 'red clay'

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Comparison of particle size characteristics of the Tertiary ...

中国科学院地质与地球物理研究所2004学术年会

作者： s.l.yang and Z.l.DING Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing 100029,P.R.China

The origin of the Tertiary ’red clay’ underlying the Pleistocene loess in the Chinese loess Plateau remains controversial,although several lines of evidence have suggested a wind-blown *** study examines the particle-size parameters of the late Miocene and Pliocene ’red clay’ by comparing it with those of the late Pleistocene *** particle-size distribution of a total of 15 339 loess and 6394 ’red clay’ samples taken from 12 loess sections along a north-south transect and two ’red clay’ sequences at lingtai and Jingchuan was systematically *** median grain size, skewness and kurtosis of the late Pleistocene loess all show a systematic southward change and are principally influenced by distance from source *** spatial and temporal differentiation of dust deposits is expressed in a skewness-kurtosis-median grain size ternary diagram,from which the distance to the source region can be *** particle-size characteristics of the Tertiary ’red clay’ sediments are very similar to those of the palaeosols within the late Pleistocene loess deposits,suggesting an aeolian origin for the ’red clay’.Based on the comparison of ’red clay’ and loess in the ternary diagrams,it is inferred that the source--sink distance was greater in the Neogene than in the last and penultimate interglacials,and that the dust source region in north-western China underwent a progressive expansion during the period from at least 7.0 Ma to the present.

关键词： Aeolian deposits Chinese loess grain size kurtosis red clay skewness

Initial intensification of East Asian winter monsoon at about 2.75 Ma as seen in the Chinese eolian loess-red clay deposit

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Initial intensification of East Asian winter monsoon at abou...

中国科学院地质与地球物理研究所2003学术年会

作者： s.F.Xiong,Z.l.Ding,W.Y.Jiang,s.l.yang,and T.s.liu Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing.China

The loess-paleosol-red clay sequence in the Chinese loess Plateau provides a record of the evolution of atmospheric circulation and monsoon climate over East Asia during the last 7-8 *** analyses of the Baishui and Jingchuan sections show that the grain size of eolian loess increased abruptly at about 2.75 Ma,which is accompanied with a reversal of depositional pattern from the red clay to loess-paleosol deposits,suggesting that the dust transporting circulation was *** is the earliest clear expression of the East Asian winter monsoon intensification at the Pliocene-Pleistocene climate transition, coincident with the initiation of major Northern Hemisphere glaciation over the Eurasian Arctic and Northeast Asia, implying that at the early stage of the Pliocene-Pleistocene global cooling the East Asian winter monsoon circulation had been closely linked with the build up of ice sheet and climate changes over the high latitudes of Northern *** intensified winter monsoon winds would have in turn acted as an important positive feedback in strengthening global cooling by increasing albedo and dust *** TERMs:3344 Meteorology and Atmospheric Dynamics:Paleoclimatology:9320 Information Related to Geographic Region;Asia;9604 Information Related to Geologic Time:Cenozoic

关键词： loess-paleosol-red clay Grain size East Asian winter monsoon Northern Hemisphere Glaciation.

Damped fluctuations in Chinese loess grain size

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Damped fluctuations in Chinese loess grain size

中国科学院地质与地球物理研究所2003学术年会

作者： s.F.Xiong,Z.l.Ding,W.Y Jiang,s.l.yang,and T.s.liu Institute of Geology and Geophysics,Chinese Academy of sciences,Beijing,China

The sediment record of the loess-paleosol sequence in the Chinese loess Plateau reveals a strong relationship between grain size fluctuations and glacial-interglacial cycles documented by marine oxygen isotope variations. However,on tectonic time scales,differences between the loess-paleosol grain size record and the marine oxygen isotope record can be *** results from the Baishui,Jingchuan and lingtai sections show that the grain size of eolian loess,superimposed on a coarsening trend, has two abrupt shifts at about 2.55 and 1.25 Ma,which are followed by significantly damped fluctuations in grain size. This is different from the global oxygen isotope record which demonstrates higher amplitude variations since the late Pliocene-early Pleistocene and lacks analogs of the abrupt *** propose that the progressive uplift of the Tibetan plateau may have forced the regional environmental system across two thresholds at the late Pliocene-early Pleistocene and the middle Pleistocene, respectively,inducing two pulses of climatic and environmental changes over north-western China which are superimposed on the global cooling trend and orbital climate *** TERMs:3344 Meteorology and Atmospheric Dynamics:Paleoctimatology;9320 Information Related to Geographic Region:Asia;9604 Information Related to Geologic Time:Cenozoic

关键词： loess-paleosol Grain size East Asian winter monsoon Uplift of the Tibetan Plateau

Northwestward Decline of Magnetic susceptibility for the Red Clay Deposit in the Chinese loess Plateau

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Northwestward Decline of Magnetic Susceptibility for the Red...

中国科学院地质与地球物理研究所2002学术年会

作者： s.F.XIONG~* W.Y.JIANG s.l.yang Z.l.DING T.s.lIU Institute of Geology and Geophysics,Chinese Academy of sciences,100029 Beijing,China

The loess-paleosol-red clay sequence in the Chinese loess Plateau has attracted attention for its potential in recording late Cenozoic climatic changes over northern China,although the details of the climatic implications of the proxies(for example,magnetic susceptibility) and the reconstructed summer monsoon changes remain *** we report on a new section from Baishui,in Gansu province and compare it with the lingtai and Jingchuan *** correlating the magnetic susceptibility from these sections,we show that there is a clear systematic decrease of the magnetic susceptibility in the red clay deposits from the southeast(lingtai section) to the northwest(Baishui section).This result suggests that the climatic parameters(probably precipitation) had a decreasing northwestward gradient during the red clay *** climatic pattern is similar to the present condition,implying that the influence of the East Asian summer monsoon on the Chinese loess Plateau has persisted from at least 6 Ma.

关键词： Red clay Magnetic susceptibility Gradient East Asian monsoon

Force and impulse multi-sensor based on flexible gate dielectric field effect transistor

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 214-220页

作者： Chao Tan Junling lü Chunchi Zhang Dong liang lei yang Zegao Wang College of Materials science and Engineering Sichuan UniversityChengdu 610065China The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050081China

Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other ***-dimensional material-based filed effect transistor(2D-FET)sensors are competitive with nano-level size,lower power consumption,and accurate ***,few of them has the capability of impulse detection which is a path function,expressing the cumulative effect of the force on the particle over a period of *** we fabricated the flexible polymethyl methacrylate(PMMA)gate dielectric Mos_(2)-FET for force and impulse sensor *** systematically investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signals(I_(ds))to the detected impulse(I).The applied force was detected and recorded by I_(ds)with a low power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is able to detect and locate the normal force applied on ***,there was almost no performance loss for the device as left in the air for two months.

关键词： flexible gate dielectric transistor force sensor impulse sensor force sensor array

维普期刊数据库

2型糖尿病的脑微结构改变:扩散峰度成像为扩散张量成像提供了新的价值

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国际医学放射学杂志 2019年第3期 378-378页

作者：田恬 Y.Xiong Y.sui s.Zhang X.J.Zhou s.l.yang Y.Fan Department of Radiology Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology

摘要目的应用扩散峰度成像序列研究2型糖尿病(T2DM)病人脑白质和灰质的微结构变化。方法对30例T2DM病人和28例对照组进行扩散峰度成像(b=0、1 250、

关键词：扩散峰度成像 DM 扩散张量微结构型糖尿病

sTCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai l.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen l.l.Chen P.Chen s.l.Chen s.M.Chen s.Chen s.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng s.Cheng T.G.Cheng J.P.Dai l.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding l.Y.Dong W.H.Dong V.Druzhinin D.s.Du Y.J.Du Z.G.Du l.M.Duan D.Epifanov Y.l.Fan s.s.Fang Z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.l.Fu J.Gao Y.N.Gao P.s.Ge C.Q.Geng l.s.Geng A.Gilman l.Gong T.Gong B.Gou W.Gradl J.l.Gu A.Guevara l.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo Z.H.Guo A.Guskov K.l.Han l.Han M.Han X.Q.Hao J.B.He s.Q.He X.G.He Y.l.He Z.B.He Z.X.Heng B.l.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.s.Huang J.s.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.s.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia s.Jia Z.K.Jia H.B.Jiang J.Jiang s.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing X.l.Kang X.s.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.lei E.levichev C.H.li C.li D.Y.li F.li G.li G.li H.B.li H.li H.N.li H.J.li H.l.li J.M.li J.li l.li l.li l.Y.li N.li P.R.li R.H.li s.li T.li W.J.li X.li X.H.li X.Q.li X.H.li Y.li Y.Y.li Z.J.li H.liang J.H.liang Y.T.liang G.R.liao l.Z.liao Y.liao C.X.lin D.X.lin X.s.lin B.J.liu C.W.liu D.liu F.liu G.M.liu H.B.liu J.liu J.J.liu J.B.liu K.liu K.Y.liu K.liu l.liu Q.liu s.B.liu T.liu X.liu Y.W.liu Y.liu Y.l.liu Z.Q.liu Z.Y.liu Z.W.liu I.logashenko Y.long C.G.lu J.X.lu N.lu Q.F.lü Y.lu Y.lu Z.lu P.lukin F.J.luo T.luo X.F.luo Y.H.luo H.J.lyu X.R.lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas s.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov s.l.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng l.Peng X.Y.Peng X.J.Peng K.Peters s.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin l.Q.Qin X.s.Qin T.l.Qiu J.Rademacker C.F.Redmer H.Y.sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAs Key laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central south University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de lausanne(EPFl) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher school of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(sTCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** sTCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the standard *** sTCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the sTCF,describes conceptual designs of the sTCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity sTCF detector conceptual design

Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

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science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan yang Han Jia Tuo liu Yuzhen yang Jun yang Key laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of Chinese Academy of sciences state Key laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characterized by a high quality(Q) factor, holds significant importance in the fields of high-precision sensing, energy storage and wave manipulation. Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering advanced research on high-Q effects. Here we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection spectrum. By virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-ranging, and elaborate manner. Exploiting the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the bright ***, a constant group delay at the center frequency is observed accompanying this evolution. Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon, and paves the way towards applications in programmable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter