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| 1 | Zircon U-Pb Ages and Sr-Nd-Hf Isotopic Characteristics of the Huichizi Granitic Complex in the North Qinling Orogenic Belt and Their Geological Significance显示文摘The Huichizi granite complex is the largest Paleozoic I-type intrusion located in the North Qinling orogenic belt(NQB). In this study, we present systematic geochemical element data, zircon U-Pb ages, Lu-Hf isotopic data, and Sr-Nd isotopic data for the Huichizi granites. In terms of mineral and chemical compositions, these granites are biotite monzonitic and alkali-feldspar granites, both of which are characterized by high SiO 2 and total alkali contents and low Mg O, Ti O2, and TFeO contents. These granites are weakly peraluminous(A/CNK values are 1–1.06 for biotite monzonitic granites and 1.04–1.09 for alkali-feldspar granites) and possess the geochemical characteristics of adakitic rocks, e.g., high Sr contents(319 ppm–633 ppm), Sr/Y ratios(18.5–174), and(La/Yb)N ratios(17.6–57) and low MgO(0.04 wt.%–0.83 wt.%), Y(3.0 ppm–17.2 ppm), and heavy rare-earth element(HREE) contents. This indicates that these rocks were most likely derived from the partial melting of a thickened lower crust. In situ zircon U-Pb dating of these granites yields Early Caledonian ages(437 Ma for biotite monzonitic granites and 424 Ma for alkali-feldspar granites), indicating that the Huichizi granitic complex is the product of multi-periodic magmatism. The positive but varying zircon εHf(t) values(+0.6 to +8.5) suggest that this thickened lower crust was mainly juvenile, i.e., accreted from depleted mantle during the Neo-Mesoproterozoic Period, but involved the ancient recycled crust. Biotite monzonitic granites formed during crust thickening at the extrusion stage, whereas the alkali granites formed during crust thickening at the extension stage(post extrusion). The Huichizi granite complex witnessed the process of extrusion to extension because of the collision between the NCB and the Qinling microcontinent in the Caledonian. | Youwei Chen Ruizhong Hu Xianwu Bi Shaohua Dong Yue Xu Ting Zhou | 2018 | Journal of Earth Science2018，29，3： | 5 |
| 2 | An experimental study of tin partition between melt and aqueous fluid in F/Cl-coexisting magma显示文摘为了调查听矿石的形成机制,与忍受 F 花岗石联系了,在忍受 F 之间的听分区的试验性的研究花岗石融化,共存的忍受 HCl 水的液体与接近 NNO 的 fo 2 在 850 ° C 和 100MPa 被进行。锡的 Geochemical 行为被变化在以不同氧化铝浸透索引 ASI 开始稳固的材料跟踪,在 F 内容并且在开始各种各样的 HCl 集中的液体。结果显示出那 D 有 ASI 的 Sn 增加融化并且每铝土融化为进在 F/Cl-coexisting 系统的水的液体的听分区是有利的。更高的 HCl 集中的水的液体为锡的丰富是有益的。而且,在玻璃跑产品的氯内容在岩浆与 F 和 Cl 内容断然相关。在 F/Cl-coexisting 系统,花岗石在能为听矿石的形成用作一座水库的 melt 与内容(>∼1 wt%) 能提取并且充实的高 F 融化锡。然而,当在 melt 的 F 内容在 1 wt% 下面时,锡的分配系数将显著地增加。因此, F 内容的减少对进有高 HCl 内容的水的液体的锡的分区有利,因此支持热水的听矿石的免职。 | HU XiaoYan BI XianWu SHANG LinBo HU RuiZhong CAI GuoSheng CHEN YouWei | 2009 | Chinese Science Bulletin2009，54，6： | 4 |
| 3 | An Examination of the Predictability of Tropical Cyclone Genesis in High-Resolution Coupled Models with Dynamically Downscaled Coupled Data Assimilation Initialization显示文摘Predicting tropical cyclone(TC)genesis is of great societal importance but scientifically challenging.It requires fineresolution coupled models that properly represent air−sea interactions in the atmospheric responses to local warm sea surface temperatures and feedbacks,with aid from coherent coupled initialization.This study uses three sets of highresolution regional coupled models(RCMs)covering the Asia−Pacific(AP)region initialized with local observations and dynamically downscaled coupled data assimilation to evaluate the predictability of TC genesis in the West Pacific.The APRCMs consist of three sets of high-resolution configurations of the Weather Research and Forecasting−Regional Ocean Model System(WRF-ROMS):27-km WRF with 9-km ROMS,and 9-km WRF with 3-km ROMS.In this study,a 9-km WRF with 9-km ROMS coupled model system is also used in a case test for the predictability of TC genesis.Since the local sea surface temperatures and wind shear conditions that favor TC formation are better resolved,the enhanced-resolution coupled model tends to improve the predictability of TC genesis,which could be further improved by improving planetary boundary layer physics,thus resolving better air−sea and air−land interactions. | Mingkui LI Shaoqing ZHANG Lixin WU Xiaopei LIN Ping CHANG Gohkan DANABASOGLU Zhiqiang WEI Xiaolin YU Huiqin HU Xiaohui MA Weiwei MA Haoran ZHAO Dongning JIA Xin LIU Kai MAO Youwei MA Yingjing JIANG Xue WANG Guangliang LIU Yuhu CHEN | 2020 | Advances in Atmospheric Sciences2020，37，9： | 4 |
| 4 | Electrospun polyporous VN nanofibers for symmetric all-solid-state supercapacitors显示文摘To promote the energy density of symmetric all-solid-state supercapacitors(SCs),efforts have been dedicated to searching for high-performance electrode materials recently. In this paper,vanadium nitride(VN) nanofibers with mesoporous structure have been fabricated by a facile electrospinning method. Their crystal structures and morphology features were characterized by X-ray diffraction,scanning electron microscopy,and transmission electron microscopy. The mesoporous structure of VN nanofibers,which can provide short electrolyte diffusion routes and conducting electron transport pathways,is beneficial to their performance as a supercapacitor electrode. Under a stable electrochemical window of 1.0 V,VN nanofibers possess an excellent mass specific capacitance of 110.8 F/g at a scan rate of 5 mV/s. Moreover,the VN nanofibers were further assembled into symmetric all-solid-state SCs,achieving a high energy density of 0.89 mW·h/cm^3 and a high power density of 0.016 W/cm^3 over an operating potential range from 0 to 1.0 V. These results demonstrate that VN nanofibers could be potentially used for energy storage devices. | Dandan ZHANG Jing LI Zhen SU Sanyuan HU Heping LI Youwei YAN | 2018 | Journal of Advanced Ceramics2018，7，3： | 3 |
| 5 | REE Characteristics of a New Uranium Mineral from the Xianshi Uranium Deposit, South China显示文摘Objective Galuskin et al.(2011)firstly discovered that vorlanite(CaU^(6+/4+))O_4 is a rare Ca-rich mineral with a fluorite-type structure,which is isostructural with uraninite(U^(4+)O_2).Previous studies of the Xianshi granite-related uranium deposit reported that uraninite and pyrite are the major ore minerals whereas galena,clausthalite(PbSe),and pyrite are minor phases in the ores.A more detailed | LUO Jincheng HU Ruizhong BI Xianwu CHEN Youwei | 2018 | Acta Geologica Sinica(English Edition)2018，92，4： | 2 |
| 6 | Influence of seeding promoters on the properties of CVD grown monolayer molybdenum disulfide显示文摘Chemical vapor deposition (CVD) is the most efficient method to grow large-area two dimensional (2D) transition metal dichiacogenides (TMDCs) in high quality.Monolayer molybdenum disulfide (MoS2) and seed-assistant are the mostly selected 2D TMDC and growth strategy for such CVD processes,respectively.Though the advantages of seed catalysts in facilitating the nucleation,achieving higher yield and better repeatability,as well as their effects on the morphologies of as-grown MoS2 have been studied,the influence of seeding promoters on both optical and electrical properties of as-grown monolayer MoS2 is not known comprehensively,which is indeed critical for understanding fundamental physics and developing practical application of such emerging 2D semiconductors.In this report,we systematically investigated the effect of different seeding promoters on the properties of CVD-grown monolayer MoS2.It is found that different seed molecules lead to different impacts on the optical and electrical properties of as-grown monolayer MoS2.Among three different seed catalysts (perylene-3,4,9,10-tetracarboxylic acid tetrapotassium salt (PTAS),copper phthalocyanine (CuPc),and crystal violet (CV)),PTAS performs better in obtaining large area monolayer MoS2 with good optical quality and high electrical mobility than the other two.Our work gives a guide for modifying the properties of as-grown monolayer MoS2 and other 2D transition metal dichalcogenides in seeding promoters-assisted synthesis process. | Peng Yang Ai-Guo Yang Lingxiu Chen Jing Chen Youwei Zhang Haomin Wang Laigui Hu Rong-Jun Zhang Ran Liu Xin-Ping Qu Zhi-Jun Qiu Chunxiao Cong | 2019 | Nano Research2019，12，4： | 2 |
| 7 | Microstructures, densification and mechanical properties of TiC–Al 2 O 3 –Al composite by field-activated combustion synthesis显示文摘 | Qiaodan Hu Peng Luo Youwei Yan | 2007 | Materials Science & Engineering A2007，，1： | 1 |
| 8 | Microstructures and densifieation of MoSi2 - SiC composite by field- activated and pressure-assisted combustion synthesis 显示文摘 | Hu Qiaodan Luo Peng Yan Youwei | 2009 | Journal of Alloys and Compounds2009，468，12： | 1 |
| 9 | Influence of spark plasma sintering temperature on sintering behavior and microstructures of dense hulk MoSi2 显示文摘 | Hu Qiaodan Luo Peng Yan Youwei | 2008 | Journal of Alloys and Compounds2008，459，12： | 1 |
| 10 | All-nanofiber self-powered PTFE/PA66 device for real-time breathing monitor by scalable solution blow spinning technology显示文摘All-nanofiber self-powered device was fabricated using simple,low-cost,safe,and scalable solution blow spinning(SBS)technology for real-time respiratory monitor and timely identification of respiratory obstruction clinically.Polytetrafluoroethylene(PTFE)and polyamide-66(PA66)nanofibers were selected as triboelectric pairs,owing to strong ability to gain electrons of PTFE and supply electrons of PA66.Poly(ethylene oxide)(PEO)was added to regulate spinning solution viscosity and prepare PTFE/PEO nanofibers,and the morphology and diameter distribution of nanofibers were discussed.PTFE nanofiber film was obtained after the decomposition of PEO in PTFE/PEO nanofiber and melt flow of PTFE pellets in a limited region,and possessed a tensile strength of 1.05 MPa and elongation at a break of 288.58%.Later,PTFE/PA66 all-nanofiber self-powered device was constructed containing PA66 nanofibers,and Au deposition film was used as electrodes by magnetron sputtering.The as-obtained device showed robust electrical performance with an open circuit voltage of~110 V at a loading force of 10 N,a short-circuit current of~5 uA at a loading force of 10 N and a frequency of 4 Hz,a maximum power density of 562 mW·m^(–2),and a current of 3.1 uA at a loading resistance of 30 MΩ.Based on the triboelectric mechanism,the device possessed stable response and effective sensibility for stimuli,was used to monitor human breathing conditions,prevent suffocation,and distinguish slow,normal,and fast breathing,with an output voltage of~0.08 V perceived in one normal respiratory circle. | Pan Li Yibo Liu Han Zhang Zhiping Hu Luna Jia Dongkui Liu Lu Yu Bo Li Youwei Yao | 2022 | Nano Research2022，15，9： | 1 |
| 11 | Sources appointment and health risks of PM_(2.5)-bound trace elements in a coastal city of southeastern China显示文摘To gain a comprehensive understanding of sources and health risks of trace elements in an area of China with high population densities and low PM_(2.5)concentrations,15 trace elements(Al,K,Ca,Ti,V,Cr,Mn,Fe,Ni,Cu,Zn,As,Sn,Ba,Pb)in PM_(2.5)were monitored from December 2020 to November 2021 in a representative city,Xiamen.The concentrations of trace elements in Xiamen displayed an obvious seasonal variation and were dominated by K,Fe,Al,Ca and Zn.Based on Positive Matrix Factorization analysis,source appointment revealed that the major sources of trace elements in Xiamen were traffic,dust,biomass and firework combustion,industrial manufacture and shipping emission.According to health risk assessment combined with the source appointment results,it indicated that the average noncarcinogenic risk was below the threshold and cancer risk of four hazardous metals(Cr,Ni,As,Pb)exceeded the threshold(10^(-6)).Traffic-related source had almost half amount of contribution to the health risk induced by PM_(2.5)-bound trace elements.During the dust transport period or Spring Festival period,the health risks exceeded an acceptable threshold even an order of magnitude higher,suggesting that the serious health risks still existed in low PM_(2.5)environment at certain times.Health risk assessment reminded that the health risk reduction in PM_(2.5)at southeastern China should prioritize traffic-related hazardous trace elements and highlighted the importance of controlling vehicles emissions in the future. | Ziyi Lin Xiaolong Fan Gaojie Chen Youwei Hong Mengren Li Lingling Xu Baoye Hu Chen Yang Yanting Chen Zhiqian Shao Jinsheng Chen | 2024 | Journal of Environmental Sciences2024，，4： | 0 |
| 12 | Atmospheric oxidation capacity and O_(3) formation in a coastal city of southeast China:Results from simulation based on four-season observation显示文摘The pollution of atmospheric ozone in China shows an obvious upward trend in the past decade.However,the studies on the atmospheric oxidation capacity and O_(3)formation in four seasons in the southeastern coastal region of China with the rapid urbanization remain limited.Here,a four-season field observation was carried out in a coastal city of southeast China,using an observation-based model combining with the Master Chemical Mechanism,to explore the atmospheric oxidation capacity(AOC),radical chemistry,O_(3)formation pathways and sensitivity.The results showed that the average net O_(3)production rate(14.55 ppbv/hr)in summer was the strongest,but the average O_(3)concentrations in autumn was higher.The AOC and ROx levels presented an obvious seasonal pattern with the maximum value in summer,while the OH reactivity in winter was the highest with an average value of 22.75 sec^(-1).The OH reactivity was dominated by oxygenated VOCs(OVOCs)(30.6%-42.8%),CO(23.2%-26.8%),NO_(2)(13.6%-22.0%),and alkenes(8.4%-12.5%)in different seasons.HONO photolysis dominated OH primary source on daytime in winter,while in other seasons,HONO photolysis in the morning and ozone photolysis in the afternoon contributed mostly.Sensitivity analysis indicated that O_(3)production was controlled by VOCs in spring,autumn and winter,but a VOC-limited and NOx-limited regime in summer,and alkene and aromatic species were the major controlling factors to O_(3)formation.Overall,the study characterized the atmospheric oxidation capacity and elucidated the controlling factors for O_(3)production in the coastal area with the rapid urbanization in China. | Gaojie Chen Taotao Liu Jinsheng Chen Lingling Xu Baoye Hu Chen Yang Xiaolong Fan Mengren Li Youwei Hong Xiaoting Ji Jinfang Chen Fuwang Zhang | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
| 13 | Direct writing of silver microfiber with precise control on patterning for robust and flexible ultrahigh-performance transparent conductor显示文摘Ultrafine silver fiber is an alternative to commercial indium tin oxide(ITO) as a new-generation flexible transparent conductor that can be used in flexible electronics.However,its primary limitation is the unrepeatable optoelectronic properties due to the disordered distribution of silver fibers.In this work,we report the in-situ direct writing of the silver microfiber pattern with high conductivity and transparency to attain a flexible transparent conductor.The silver network is composed of silver microfibers,which can be artificially designed and regularly patterned under the precise control of the fiber position and shape;this is crucial for regulating its optoelectronic properties.Herein,a high-performance conductor is achieved in the silver network with high stability.This novel conductor has a sheet resistance of 2 Ω sq-1at 90% transparency,which corre sponds to a high Figure of merit σdc/σopt=1742.The in-situ direct writing technique developed here is distinct from other fabrication methods because it requires no transfer steps,templates or heating.Further,this silver network is integrated into a light-printable rewritable device,and can be used as a wearable heater;this heater when driven by a 1.5 V battery attains a temperature of up to 55.6℃.Therefore,in-situ direct writing is expected to offer a new platform for facile,scalable,and ultralow-cost production of high-performance metal networks for flexible transparent conductors. | Tao Chen Heping Li Jing Li Sanyuan Hu Pin Ye Youwei Yan | 2020 | Journal of Materials Science & Technology2020，47，12： | 0 |
| 14 | Understanding travel behavior adjustment under COVID-19显示文摘The outbreak and spreading of the COVID-19 pandemic have had a significant impact on transportation system.By analyzing the impact of the pandemic on the transportation system,the impact of the pandemic on the social economy can be reflected to a certain extent,and the effect of anti-pandemic policy implementation can also be evaluated.In addition,the analysis results are expected to provide support for policy optimization.Currently,most of the relevant studies analyze the impact of the pandemic on the overall transportation system from the macro perspective,while few studies quantitatively analyze the impact of the pandemic on individual spatiotemporal travel behavior.Based on the license plate recognition(LPR)data,this paper analyzes the spatiotemporal travel patterns of travelers in each stage of the pandemic progress,quantifies the change of travelers'spatiotemporal behaviors,and analyzes the adjustment of travelers'behaviors under the influence of the pandemic.There are three different behavior adjustment strategies under the influence of the pandemic,and the behavior adjustment is related to the individual's past travel habits.The paper quantitatively assesses the impact of the COVID-19 pandemic on individual travel behavior.And the method proposed in this paper can be used to quantitatively assess the impact of any long-term emergency on individual micro travel behavior. | Wenbin Yao Jinqiang Yu Ying Yang Nuo Chen Sheng Jin Youwei Hu Congcong Bai | 2022 | Communications in Transportation Research2022，2，1： | 0 |
| 15 | Corrigendum to“Understanding travel behavior adjustment under COVID-19”[Commun.Transport.Res.2C(2022)100068]显示文摘The authors regret that Eq.(5)in the paper is wrongly written and should be revised as follows:s_(p)(a_(i),a_(j))=len(a_(i))×Ratio(LCS(a_(i),a_(j)),a_(i))+len(a_(j))×Ratio(LCS(a_(i),a_(j)),a_(j))/len(a_(i))+len(a_(j))(5)The authors would like to apologise for any inconvenience caused. | Wenbin Yao Jinqiang Yu Ying Yang Nuo Chen Sheng Jin Youwei Hu Congcong Bai | 2022 | Communications in Transportation Research2022，2，1： | 0 |
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