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| 1 | Reconstruction of flood events over the last 150 years in the lower reaches of the Changjiang River显示文摘The reconstruction of paleofloods in the Holocene has become one research highlight for the present global change study.The core sediments from one newly-emerged bar in the lower Changjiang River(Yangtze River)mainstream were collected for grain size and organic elemental measurements,with aim to reconstruct the flood events over the past 150 years.Major grain size parameters such as mean grain size,probability cumulative curve and C-M diagram of the core sediments clearly indicate the flood event deposition.Furthermore,the TOC/TN ratios in the sediments can indicate flood events considering that during the flash floods,strong surface erosion in the upper and lower reaches of the Changjiang River can transport a large amount of undecomposed plant debris and organic components with relatively low C/N ratios into the lower mainstream.Based on 210Pb dating and sedimentary geochemical results,the research profile recorded several large floods happened from 1850 to 1954,which agrees well with the historical documents and hydrological observations.Interesting to note that the flood events since the 1960s cannot be distinctly recognized on the basis of sediment grain size and organic elemental compositions of the profile,which mainly reflects the intensive human activities over the last fifty years,especially condense dam construction,have significantly changed the characters of suspended sediment into the lower mainstream. | ZHAN Wang YANG ShouYe LIU XiaoLi LI JianWei CHOI ManSik | 2010 | Chinese Science Bulletin2010，55，21： | 9 |
| 2 | Oxidation behaviors of(Hf_(0.25)Zr_(0.25)Ta_(0.25)Nb_(0.25))C and(Hf_(0.25)Zr_(0.25)Ta_(0.25)Nb_(0.25))C-SiC at 1300-1500℃显示文摘In this work,high-entropy ceramics(Hf_(0.25) Zr_(0.25)Ta_(0.25)Nb_(0.25))C(HZTNC) and HZTNC doped with 20 vol%SiC(HZTNC-SiC) were fabricated by spark plasma sintering.Their oxidation behavior was investigated over the temperature range of 1300-1500℃ for up to 60 min.Both HZTNC and HZTNC-SiC exhibited good oxidation resistance,and their weight change as a function of oxidation time obeyed a parabolic law.Through XRD,microstructure observation,and elemental mapping analysis of the oxide layers,it was found that the formation of Nb_(2) Zr_(6) O_(17),Hf_(6) Ta_(2) O_(17),and(Ta,Nb)_(2) O_(5) mixed-oxide layers effectively protected the matrix from further oxidation.Microcracks began to appear on the oxide layer of HZTNC at high temperatures after 60 min of oxidation.However,the addition of SiC in HZTNC suppressed these microcracks at high temperatures due to the active oxidation of SiC.Compared with the oxides formed on HZTNC,the additional formation of Hf(Zr)SiO_(4) on HZTNC-SiC could further improve its oxidation resistance over HZTNC ceramics. | Haoxuan Wang Shouye Wang Yejie Cao Wen Liu Yiguang Wang | 2021 | Journal of Materials Science & Technology2021，，1： | 2 |
| 3 | Origin of the springtime South China Sea Warm Current in the southwestern Taiwan Strait: Evidence from seawater oxygen isotope显示文摘Oxygen isotope(δ^18O)of seawater is an excellent proxy for tracing the origins of water masses and their mixing processes.Combining with hydrographic observation,hybrid coordinate ocean model(HYCOM)analysis data,and seawater oxygen isotope,we investigated the source of the South China Sea Warm Current(SCSWC)in the southwestern Taiwan Strait and its underlying mechanism.Results show that the Kuroshio subsurface water(KSSW)can intrude the continental slope in the southwestern Taiwan Strait,and thereby climb up the continental slope coupled with upwelling.Theδ^18O-salinity relationship further indicates that in spring,the SCSWC in the southwestern Taiwan Strait originates from the upslope deflection of the slope current formed by the KSSW intrusion into the South China Sea,rather than from the west segment of the SCSWC formed to the east of Hainan Island.In addition,the southward flowing Zhe-Min Coastal Current(ZMCC)can reach as far as the Taiwan Bank(TB)and deflects offshore over the western TB at approximately 23.5°N,to some extent affecting the SCSWC.Moreover,this study reveals that seawaterδ^18O is exquisitely sensitive to the determination of the origin and transport of water masses as compared with traditional potential temperature-salinity plot(θ-S)and HYCOM analysis data.In addition,their coupling can more reliably interpret the mixing processes of shelf water masses. | Dongyu CHEN Ergang LIAN Yeqiang SHU Shouye YANG Yalong LI Chao LI Pengfei LIU Ni SU | 2020 | Science China Earth Sciences2020，63，10： | 2 |
| 4 | Provenance discrimination of siliciclasic sediments in the middle Okinawa Trough since 30 ka: Constraints from rare earth element com- positions 显示文摘 | Dou Yanguang Yang Shouye Liu Zhenxia | 2010 | Marine Geology2010，275，： | 1 |
| 5 | Provenance discrimination of siliciclastic sediments in the middle Okinawa Trough since 30<ce:hsp sp='0.25'/>ka: Constraints from rare earth element compositions显示文摘 | Yanguang Dou Shouye Yang Zhenxia Liu Peter D. Clift Xuefa Shi Hua Yu Serge Berne | 2010 | Marine Geology2010，，1： | 1 |
| 6 | Sr-Nd iso- topic constraints on terrigenous sediment provenances and Kuroshio Current variability in the Okinawa Trough during the late Quaternary 显示文摘 | Dou Yanguang Yang Shouye Liu Zhenxia | 2012 | Palaeogeography Palaeochimatolo- gy Palaeoecology2012，35，： | 1 |
| 7 | Assessing the U^(K′)_(37)-sea surface temperature relationship in shallow marine waters显示文摘To investigate the relationship between the alkenone unsaturation index(U^(K′)_(37)) and sea surface temperature(SST) in coastal and continental shelf waters, 58 surface sediment samples were collected from the South China Sea(SCS), Taiwan Strait,and East China Sea(ECS). We combined the new results with the previously published 71 data points from the SCS, the shallow water areas of the Yellow Sea(YS) and northern ECS, to form a dataset with sample sites spanning across 6°N and 37°N(including annual SST calibration between 14.3℃ and 28.6℃). With this dataset, we examined the U^(K′)_(37)-SST relationship based on 129 samples from the Western North Pacific(WNP) margin as well as using 85 samples from specific WNP shallow water.The U^(K′)_(37)index from the low-mid latitudinal WNP margin demonstrated a good correlation with the surface annual mean SST(0–50 m water depth;R^(2)=0.89). The slope of linear regression(U^(K′)_(37)-SST) based on the coastal-continental shelf samples with water depth less than 200 m is similar to that of the published global open ocean regression equation. These results confirm that U^(K′)_(37)can be used as a shallow sea water SST proxy in mid-low latitudes of the WNP marginal seas. In addition, our reintegrated U^(K′)_(37)-SST results based on 172 global shallow water samples are similar(similar slopes and intercepts) to the shallow ocean results in the WNP marginal seas. However, the similarity of the regression formula to the open ocean does not imply that the formula is applicable. For example, of the 85 data in the shallow waters from the marginal sea in this study, the majority of data points lie above the regression line, showing positive residuals for U^(K′)_(37). This regression bias appears to be caused by specific marine environments, such as warm ocean currents and/or high nutrient conditions that result in positive U^(K′)_(37)residuals. Taken together,considering the specific temperature and environmental factors in the shallow waters of the low-mid-latitude WNP margin, we propose a nonlinear U^(K′)_(37)-SST regression formula: U^(K′)_(37)=-1.2488+0.1740×SST-0.0035×(SST)2, R2=0.93, N=85, specifically for the environments with SST below 24℃. | Mengyuan WANG Haixian XIONG Shouye YANG Fengling YU Deming KONG Yongqiang ZONG Zhonghui LIU | 2023 | Science China Earth Sciences2023，66，4： | 0 |
| 8 | Maternal aging increases offspring adult body size via transmission of donut-shaped mitochondria显示文摘Maternal age at childbearing has continued to increase in recent decades.However,whether and how it influences offspring adult traits are largely unknown.Here,using adult body size as the primary readout,we reveal that maternal rather than paternal age has an evolutionarily conserved effect on offspring adult traits in humans,Drosophila,and Caenorhabditis elegans.Elucidating the mechanisms of such effects in humans and other long-lived animals remains challenging due to their long life course and difficulties in conducting in vivo studies.We thus employ the short-lived and genetically tractable nematode C.elegans to explore the mechanisms underlying the regulation of offspring adult trait by maternal aging.By microscopic analysis,we find that old worms transmit aged mitochondria with a donut-like shape to offspring.These mitochondria are rejuvenated in the offspring’s early life,with their morphology fully restored before adulthood in an AMPK-dependent manner.Mechanistically,we demonstrate that early-life mitochondrial dysfunction activates AMPK,which in turn not only alleviates mitochondrial abnormalities but also activates TGFβsignaling to increase offspring adult size.Together,our findings provide mechanistic insight into the ancient role of maternal aging in shaping the traits of adult offspring. | Runshuai Zhang Jinan Fang Ting Qi Shihao Zhu Luxia Yao Guicun Fang Yunsheng Li Xiao Zang Weina Xu Wanyu Hao Shouye Liu Dan Yang Di Chen Jian Yang Xianjue Ma Lianfeng Wu | 2023 | Cell Research2023，33，11： | 0 |
| 9 | Zibo Sangde Machinery Equipment Co., Ltd. The Most Professional Manufacturer of Refractory Electric Screw Press in China显示文摘In recent years,China has fully developed in output,quality,and technical advancement of refractories, and become the biggest country in refractories production and consumption in the world. Meanwhile,education and training in China's refractories industry have developed rapidly. This paper introduces the present situations of undergraduate education,postgraduate education, academic education,and vocational and other training of China's refractories industry,including the student recruiting situation, subject arrangement, teachers force,and R & D equipment level,and also puts forward some suggestions for China's refractories education and training. | WANG Shouye CHAI Junlan LIU Zengtian | 2012 | China's Refractories2012，21，1： | 0 |
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