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| 1 | Oscillation of Surface PM2.5 Concentration Resulting from an Alternation of Easterly and Southerly Winds in Beijing: Mechanisms and Implications显示文摘We used simultaneous measurements of surface PM_(2.5) concentration and vertical profiles of aerosol concentration,temperature, and humidity, together with regional air quality model simulations, to study an episode of aerosol pollution in Beijing from 15 to 19 November 2016. The potential effects of easterly and southerly winds on the surface concentrations and vertical profiles of the PM_(2.5) pollution were investigated. Favorable easterly winds produced strong upward motion and were able to transport the PM_(2.5) pollution at the surface to the upper levels of the atmosphere. The amount of surface PM_(2.5) pollution transported by the easterly winds was determined by the strength and height of the upward motion produced by the easterly winds and the initial height of the upward wind. A greater amount of PM_(2.5) pollution was transported to upper levels of the atmosphere by upward winds with a lower initial height. The pollutants were diluted by easterly winds from clean ocean air masses. The inversion layer was destroyed by the easterly winds and the surface pollutants and warm air masses were then lifted to the upper levels of the atmosphere, where they re-established a multi-layer inversion. This region of inversion was strengthened by the southerly winds, increasing the severity of pollution. A vortex was produced by southerly winds that led to the convergence of air along the Taihang Mountains. Pollutants were transported from southern–central Hebei Province to Beijing in the boundary layer. Warm advection associated with the southerly winds intensified the inversion produced by the easterly winds and a more stable boundary layer was formed. The layer with high PM_(2.5) concentration became dee-per with persistent southerly winds of a certain depth. The polluted air masses then rose over the northern Taihang Mountains to the northern mountainous regions of Hebei Province. | Zhaobin SUN Xiaoling ZHANG Xiujuan ZHAO Xiangao XIA Shiguang MIAO Ziming LI Zhigang CHENG Wei WEN Yixi TANG | 2018 | Journal of Meteorological Research2018，32，2： | 3 |
| 2 | Progress of Jinping Underground laboratory for Nuclear Astrophysics(JUNA)显示文摘Jinping Underground laboratory for Nuclear Astrophysics(JUNA) will take the advantage of the ultra-low background of CJPL lab and high current accelerator based on an ECR source and a highly sensitive detector to directly study for the first time a number of crucial reactions occurring at their relevant stellar energies during the evolution of hydrostatic stars. In its first phase, JUNA aims at the direct measurements of^(25)Mg(p,γ)^(26)Al,^(19)F(p,α)^(16)O,^(13)C(α,n)^(16)O and ^(12)C(α,γ)^(16)O reactions. The experimental setup,which includes an accelerator system with high stability and high intensity, a detector system, and a shielding material with low background, will be established during the above research. The current progress of JUNA will be given. | WeiPing Liu ZhiHong Li JiangJun He XiaoDong Tang Gang Lian Zhu An JianJun Chang Han Chen QingHao Chen XiongJun Chen ZhiJun Chen BaoQun Cui XianChao Du ChangBo Fu Lin Gan Bing Guo GuoZhu He Alexander Heger SuQing Hou HanXiong Huang Ning Huang BaoLu Jia LiYang Jiang Shigeru Kubono JianMin Li KuoAng Li Tao Li YunJu Li Maria Lugaro XiaoBing Luo HongYi Ma ShaoBo Ma DongMing Mei YongZhong Qian JiuChang Qin Jie Ren YangPing Shen Jun Su LiangTing Sun WanPeng Tan Isao Tanihata Shuo Wang Peng Wang YouBao Wang Qi Wu ShiWei Xu ShengQuan Yan LiTao Yang Yao Yang XiangQing Yu Qian Yue Sheng Zeng HuanYu Zhang Hui Zhang LiYong Zhang NingTao Zhang QiWei Zhang Tao Zhang XiaoPeng Zhang XueZhen Zhang ZiMing Zhang Wei Zhao Zuo Zhao Chao Zhou | 2016 | Science China(Physics,Mechanics & Astronomy)2016，59，4： | 3 |
| 3 | Three-dimensional silk fibroin scaffolds enhance the bone formation and angiogenic differentiation of human amniotic mesenchymal stem cells:a biocompatibility analysis显示文摘Silk fibroin(SF)is a fibrous protein with unique mechanical properties,adjustable biodegradation,and the potential to drive differentiation of mesenchymal stem cells(MSCs)along the osteogenic lineage,making SF a promising scaffold material for bone tissue engineering.In this study,hAMSCs were isolated by enzyme digestion and identified by multiple-lineage differentiation.SF scaffold was fabricated by freeze-drying,and the adhesion and proliferation abilities of hAMSCs on scaffolds were determined.Osteoblast differentiation and angiogenesis of hAMSCs on scaffolds were further evaluated,and histological staining of calvarial defects was performed to examine the cocultured scaffolds.We found that hAMSCs expressed the basic surface markers of MSCs.Collagen type I(COLI)expression was observed on scaffolds cocultured with hAMSCs.The scaffolds potentiated the proliferation of hAMSCs and increased the expression of COL-I in hAMSCs.The scaffolds also enhanced the alkaline phosphatase activity and bone mineralization,and upregulated the expressions of osteogeniorelated factors in vitro.The scaffolds also enhanced the an gioge nic differe ntiati on of hAMSCs.The cocultured scaffolds in creased bone formati on in treating critical calvarial defects in mice.This study first demonstrated that the application of 3D SF scaffolds co-cultured with hAMSCs greatly enhaneed osteogenic differentiation and angiogenesis of hAMSCs in vitro and in vivo.Thus,3D SF scaffolds cocultured with hAMSCs may be a better alter native for bone tissue engin eering. | Yuwan Li Ziming Liu Yaping Tang Qinghong Fan Wei Feng Changqi Luo Guangming Dai Zhen Ge Jun Zhang Gang Zou Yi Liu Ning Hu Wei Huang | 2020 | Acta Biochimica et Biophysica Sinica2020，52，6： | 2 |
| 4 | Analysis on the Impacts of Straw Burning on Air Quality in Beijing -Tianjing - Hebei Region显示文摘The beginning of October is the high occurrence period of straw burning in North China and Jianghuai region. Heavy pollution weather caused by straw burning often takes place in recent two years,and thus human factor increases the unpredictability of the air quality forecast. In the early autumn of 2015,a continuous fog-haze weather and heavy air pollution event occurred in North China and Jianghuai region due to the straw burning. In this paper,the effect of straw burning on air quality under the same adverse diffusive meteorological conditions has been analyzed by using the ground and upper air meteorological observation data and air quality monitoring data of Environmental Protection Agency in recent two years. The comparison results show that the basic conditions of heavy pollution are weak wind and the unfavorable diffusion situation. In contrast,relative humidity is the key factor,only 40% of relative humidity during the straw burning can reach heavy pollution level during no straw burning. | Ma Xiaohui Tang Yixi Sun Zhaobin Li Ziming | 2017 | Meteorological and Environmental Research2017，8，5： | 2 |
| 5 | Brief Analysis on the Characteristics and Regeneration Methods of Brownfields in Binhai New Area显示文摘Under the new normal, urban construction in China is gradually transforming from an era of expansion planning to stock-based planning. The reuse of once-used, abandoned, or contaminated land in urban areas has become the focus for digging the potential of urban land resources and values. Binhai New Area, as the forefront of economic growth in China's development zones, has experienced rapid development in the past 30 years, where the brownfield regeneration issue is becoming increasingly prominent in the rapid process of urban industrial development and new town construction. In consideration of the large size of each single brownfield patch and serious petrochemical contamination, it is essential and valuable to carry out a research on the present status, problems, and regeneration strategies of brownfield in Binhai New Area. | Wang Jing Zhou Yizhou Liu Ziming Liu Jinxin(译) Tang Yan(校) | 2017 | China City Planning Review2017，26，3： | 1 |
| 6 | Influence of circulation types on temporal and spatial variations of ozone in Beijing显示文摘This study analyzes the impact of circulation types(CTs)on ozone(O_(3))pollution in Beijing.The easterly high-pressure(SWW)circulation occurred most frequently(30%;276 day),followed by northwesterly high-pressure(AN)circulation(24.3%;224 day).The SWW type had the highest O_(3) anomaly of+17.28μg/m^(3),which was caused by excellent photochemical reactions,poor diffusion ability and regional transport.Due to the higher humidity and precipitation in the low-pressure type(C),the O_(3) increase(+8.02μg/m^(3))was less than that in the SWW type.Good diffusion/wet deposition and weak formation ability contributed to O_(3) decrease in AN(-12.54μg/m^(3))and northerly high-pressure(ESN)CTs(-12.26μg/m^(3)).The intra-area transport of O_(3) was significant in polluted circulations(SWW-and C-CTs).In addition,higher temperature,radiation and less rainfall also contributed to higher O_(3) in northern Beijing under the SWW type.For the clean CTs(AN and ESN CTs),precursor amount and intra-area transport played a dominant role in O_(3) distribution.Under the northeasterly low-pressure CT,better formation conditions and higher precursor amount combined with the intra-area southerly transport to cause higher O_(3) values in the south than in the north.The higher O_(3) in the northwestern area under the northeasterly high-pressure type was influenced by weaker titration loss and high O_(3) concentration in previous day.Annual variation in the CTs contributed up to 86.1%of the annual variation in O_(3).About 78%-83%of the diurnal variation in O_(3) resulted from local meteorological factors. | Xiaowan Zhu JinWu Guiqian Tang Lin Qiao Tingting Han Xiaomei Yin Xiangxue Liu Ziming Li Yajun Xiong Di He Zhiqiang Ma | 2023 | Journal of Environmental Sciences2023，，8： | 1 |
| 7 | CuO nanoflowers/copper fiber felt integrated porous electrode for lithium-ion batteries显示文摘The structure of current collectors has significant effects on the performance of a lithium-ion battery(LIB).In this study,we use copper fiber felts made by multi-tooth cutting and high-temperature solid-phase sintering as the current collector for LIBs.An integrated porous electrode based on CuO nanoflowers/copper fiber felt is developed for the anode.Results suggest that the reversible capacity and cycle stability of this new anode are significantly improved,compared with the pristine bare-surface copper plate under the same condition of rate cycles.The new anode structure based on the copper-fiber felt with a porosity of 60%exhibits a higher performance with an initial specific capacity of 609.5 mAh g^(-1)and retains 486.1 mAh g^(-1)after 200 cycles at a current density of 0.5 C.The improved electrochemical performance of this electrode is attributed to its large surface area of CuO nanoflowers and porous structure of the copper fiber felt,due to enhanced contact between the active material of CuO nanoflowers and electrolyte.This pore-rich structure makes the electrolyte easy to permeate into the electrode,shortens the diffusion path of Li^(+),reduces the internal resistance and alleviates the volume expansion of the active material during the insertion and desertion processes of Li^(+). | YUAN Wei YE YinTong YANG Yang ZHANG XiaoQing PAN BaoYou PENG ZiMing WU MuLun QIU ZhiQiang WANG Chun YUAN YuHang YAN ZhiGuo TANG Yong | 2020 | Science China(Technological Sciences)2020，63，11： | 1 |
| 8 | Hyaluronic acid coated poly(butyl cyanoacrylate) nanoparticles as anticancer drug carriers显示文摘 | Miao He Ziming Zhao Lichen Yin Cui Tang Chunhua Yin | 2009 | International Journal of Pharmaceutics2009，，1： | 1 |
| 9 | CD301b^(+) macrophages mediate angiogenesis of calcium phosphate bioceramics by CaN/NFATc1/VEGF axis显示文摘Calcium phosphate(CaP)bioceramics are important for tissue regeneration and immune response,yet how CaP bioceramics influence these biological processes remains unclear.Recently,the role of immune cells in biomaterial-mediated regeneration,especially macrophages,has been well concerned.CD301b^(+)macrophages were a new subset of macrophages we have discovered,which were required for bioceramics-mediated bone regeneration.Nevertheless,the impact of CD301b^(+)macrophages on angiogenesis,which is a vital prerequisite to bone formation is yet indistinct.Herein,we found that CD301b^(+)macrophages were closely correlated to angiogenesis of CaP bioceramics.Additionally,depletion of CD301b^(+)macrophages led to the failure of angiogenesis.We showed that store-operated Ca^(2+)entry and calcineurin signals regulated the VEGF expression of CD301b^(+)macrophages via the NFATc1/VEGF axis.Inhibition of calcineurin effectively impaired angiogenesis via decreasing the infiltration of CD301b^(+)macrophages.These findings provided a potential immunomodulatory strategy to optimize the integration of angiogenesis and bone tissue engineering scaffold materials. | Jiaolong Wang Qin Zhao Liangliang Fu Shihang Zheng Can Wang Litian Han Zijian Gong Ziming Wang Hua Tang Yufeng Zhang | 2022 | Bioactive Materials2022，7，9： | 0 |
| 10 | Symmetric-threshold ReLU for Fast and Nearly Lossless ANN-SNN Conversion显示文摘The artificial neural network-spiking neural network(ANN-SNN)conversion,as an efficient algorithm for deep SNNs training,promotes the performance of shallow SNNs,and expands the application in various tasks.However,the existing conversion methods still face the problem of large conversion error within low conversion time steps.In this paper,a heuristic symmetric-threshold rectified linear unit(stReLU)activation function for ANNs is proposed,based on the intrinsically different responses between the integrate-and-fire(IF)neurons in SNNs and the activation functions in ANNs.The negative threshold in stReLU can guarantee the conversion of negative activations,and the symmetric thresholds enable positive error to offset negative error between activation value and spike firing rate,thus reducing the conversion error from ANNs to SNNs.The lossless conversion from ANNs with stReLU to SNNs is demonstrated by theoretical formulation.By contrasting stReLU with asymmetric-threshold LeakyReLU and threshold ReLU,the effectiveness of symmetric thresholds is further explored.The results show that ANNs with stReLU can decrease the conversion error and achieve nearly lossless conversion based on the MNIST,Fashion-MNIST,and CIFAR10 datasets,with 6×to 250 speedup compared with other methods.Moreover,the comparison of energy consumption between ANNs and SNNs indicates that this novel conversion algorithm can also significantly reduce energy consumption. | Jianing Han Ziming Wang Jiangrong Shen Huajin Tang | 2023 | Machine Intelligence Research2023，20，3： | 0 |
| 11 | Effectiveness of Fuling(Poria) and its extracts against spleen deficiency in rats via tonifying spleen显示文摘OBJECTIVE:To observe and explore the effect of Fuling(Poria) in alleviating the spleen deficiency symptom pattern(SDSP).METHODS:We established an animal model of SDS in Sprague-Dawley(SD) rats by treating them with deficiency-inducing factors,including irregular feeding and tail clamping.Mice were administered Fuling(Poria) and its extracts(raw/cooked powder,aqueous/alcohol extract) by gavage once a day for 21 d.The body weight,rectal temperature,and spleen and thymus organ coefficients were calculated.The levels of motilin(MTL),gastrin(GAS),aquaporin 2(AQP2),interleukin 2(IL-2),IL-4,and 5-hydroxytryptamine(5-HT) in the serum and the level of AQP2 in the kidneys were evaluated by enzyme-linked immunosorbent assay.RESULTS:Fuling(Poria) and its extracts did not change the body weight,rectal temperature,and organ coefficients of the spleen and thymus.However,it reduced the levels of MTL and GAS and increased the levels of IL-2 and AQP2.In addition,the levels of IL-4 and 5-HT showed no significant alteration.CONCLUSIONS:These results suggested the crucial function of Fuling(Poria) in SDSP,especially promoting digestive function and water metabolism. | FENG Min JIA Ziming WAN Ming FAN Bolin TANG Xiaoqiao CHENG Wenhua SUN Fanzhong | 2023 | Journal of Traditional Chinese Medicine2023，43，3： | 0 |
| 12 | Active-Sensing Epidermal Stretchable Bioelectronic Patch for Noninvasive,Conformal,and Wireless Tendon Monitoring显示文摘Sensors capable of monitoring dynamic mechanics of tendons throughout a body in real time could bring systematic information about a human body’s physical condition,which is beneficial for avoiding muscle injury,checking hereditary muscle atrophy,and so on.However,the development of such sensors has been hindered by the requirement of superior portability,high resolution,and superb conformability.Here,we present a wearable and stretchable bioelectronic patch for detecting tendon activities.It is made up of a piezoelectric material,systematically optimized from architectures and mechanics,and exhibits a high resolution of 5:8×10^(−5)N with a linearity parameter of R^(2)=0:999.Additionally,a tendon real-time monitoring and healthcare system is established by integrating the patch with a micro controller unit(MCU),which is able to process collected data and deliver feedback for exercise evaluation.Specifically,through the patch on the ankle,we measured the maximum force on the Achilles tendon during jumping which is about 16312 N,which is much higher than that during normal walking(3208 N)and running(5909 N).This work not only provides a strategy for facile monitoring of the variation of the tendon throughout the body but also throws light on the profound comprehension of human activities. | Sheng Shu Jie An Pengfei Chen Di Liu Ziming Wang Chengyu Li Shuangzhe Zhang Yuan Liu Jianzhe Luo Lulu Zu Wei Tang Zhong Lin Wang | 2021 | Research2021，，1： | 0 |
| 13 | Theoretical study on magnetocaloric effect and its electric-field regulation in CrI_(3)/metal heterostructure显示文摘The extraordinary properties of a heterostructure by stacking atom-thick van der Waals(vdW)magnets have been extensively studied.However,the magnetocaloric effect(MCE)of heterostructures that are based on monolayer magnets remains to be explored.Herein,we deliberate MCE of vd W heterostructure composed of a monolayer CrI_(3)and metal atomic layers(Ag,Hf,Au,and Pb).It is revealed that heterostructure engineering by introducing metal substrate can improve MCE of CrI_(3),particularly boosting relative cooling power to 471.72μJ m^(-2)and adiabatic temperature change to 2.1 K at 5 T for CrI_(3)/Hf.This improved MCE is ascribed to the enhancement of magnetic moment and intralayer exchange coupling in CrI_(3)due to the CrI_(3)/metal heterointerface induced charge transfer.Electric field is further found to tune MCE of CrI_(3)in heterostructures and could shift the peak temperature by around 10 K in CrI_(3)/Hf,thus manipulating the working temperature window of MCE.These theoretical results could enrich the research on low-dimensional magnetocaloric materials. | Weiwei He Ziming Tang Qihua Gong Min Yi Wanlin Guo | 2024 | Science China(Physics,Mechanics & Astronomy)2024，67，2： | 0 |
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