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| 1 | A comparative study and evaluation of sulfamethoxazole adsorption onto organo-montmorillonites显示文摘Three organo-montmorillonites were prepared using surfactants,and their adsorption behaviors toward sulfamethoxazole(SMX)were investigated.The surfactants used were cetyltrimethyl ammonium bromide(CTMAB),3-(N,N-dimethylhexadecylammonio)propane sulfonate(HDAPS)and 1,3-bis(hexadecyldimethylammonio)-propane dibromide(BHDAP).The properties of the organo-montmorillonites were characterized by X-ray diffraction,scanning electron microscopy and N2adsorption–desorption isotherm measurements.Results showed that the interlayer spacing of montmorillonite was increased and the surface area as well as the morphology were changed.Batch adsorption experiments showed that the surfactant loading amount had a great effect on the adsorption of SMX.The adsorption process was p H dependent and the maximum adsorption capacity was obtained at p H 3 for HDAPS-Mt,while CTMAB-Mt and BHDAP-Mt showed a high removal efficiency at 3–11.The adsorption capacity increased with the initial SMX concentration and contact time but decreased with increasing solution ionic strength.Kinetic data were best described by the pseudo second-order model.Equilibrium data were best represented by the Langmuir model,and the Freundlich constant(n)indicated a favorable adsorption process.The maximum adsorption capacity of SMX was 235.29 mg/g for CTMAB-Mt,155.28 mg/g for HDAPS-Mt and 242.72 mg/g for BHDAP-Mt.Thermodynamic parameters were calculated to evaluate the spontaneity and endothermic or exothermic nature.The adsorption mechanism was found to be dominated by electrostatic interaction,while hydrophobic interaction played a secondary role. | Laifu Lu Manglai Gao Zheng Gu Senfeng Yang Yuening Liu | 2014 | Journal of Environmental Sciences2014，26，12： | 7 |
| 2 | Atmospheric heat source/sink dataset over the Tibetan Plateau based on satellite and routine meteorological observations显示文摘The Tibetan Plateau(TP),acting as a large elevated land surface and atmospheric heat source during spring and summer,has a substantial impact on regional and global weather and climate.To explore the multi-scale temporal variation in the thermal forcing effect of the TP,here we calculated the surface sensible heat and latent heat release based on 6-h routine observations at 80(32)meteorological stations during the period 1979–2016(1960–2016).Meanwhile,in situ air-column net radiation cooling during the period 1984–2015 was derived from satellite data.This new data-set provides continuous,robust,and the longest observational atmospheric heat source/sink data over the third pole,which will be helpful to better understand the spatial-temporal structure and multi-scale variation in TP diabatic heating and its influence on the earth’s climatic system. | Anmin Duan Senfeng Liu Yu Zhao Kailun Gao Wenting Hu | 2018 | Big Earth Data2018，2，2： | 7 |
| 3 | Impacts of the Leading Modes of Tropical Indian Ocean Sea Surface Temperature Anomaly on Sub-Seasonal Evolution of the Circulation and Rainfall over East Asia during Boreal Spring and Summer显示文摘The two leading modes of the interannual variability of the tropical Indian Ocean(TIO) sea surface temperature(SST) anomaly are the Indian Ocean basin mode(IOBM) and the Indian Ocean dipole mode(IODM) from March to August. In this paper, the relationship between the TIO SST anomaly and the sub-seasonal evolution of the circulation and rainfall over East Asia during boreal spring and summer is investigated by using correlation analysis and composite analysis based on multi-source observation data from 1979 to 2013, together with numerical simulations from an atmospheric general circulation model. The results indicate that the impacts of the IOBM on the circulation and rainfall over East Asia vary remarkably from spring to summer. The anomalous anticyclone over the tropical Northwest Pacific induced by the warm IOBM is closely linked with the Pacific–Japan or East Asia–Pacific teleconnection pattern, which persists from March to August. In the upper troposphere over East Asia, the warm phase of the IOBM generates a significant anticyclonic response from March to May. In June and July, however, the circulation response is characterized by enhanced subtropical westerly flow. A distinct anomalous cyclone is found in August.Overall, the IOBM can exert significant influence on the western North Pacific subtropical high, the South Asian high, and the East Asian jet, which collectively modulate the precipitation anomaly over East Asia. In contrast, the effects of the IODM on the climate anomaly over East Asia are relatively weak in boreal spring and summer. Therefore, studying the impacts of the TIO SST anomaly on the climate anomaly in East Asia should take full account of the different sub-seasonal response during boreal spring and summer. | Senfeng LIU Anmin DUAN | 2017 | Journal of Meteorological Research2017，31，1： | 5 |
| 4 | Platelet-mediated adhesion facilitates leukocyte sequestration in hypoxia-reoxygenated microvessels显示文摘Leukocyte transendothelial migration and sequestration are two distinct outcomes following leukocyte adhesion to endothelium during ischemia-reperfusion injury, in which platelets may play a pivotal role. In the present study, we established an in vitro hypoxia-reoxygenation model to mimic ischemia-reperfusion injury and found platelet pre-incubation significantly increased leukocyte adhesion to endothelial cells after hyoxia-reoxygenation(over 67%). Blockade of endothelial-cell-expressed adhesion molecules inhibited leukocyte direct adhesion to endothelial cells, while platelet-mediated leukocyte adhesion was suppressed by blockade of platelet-expressed adhesion molecules. Further experiments revealed platelets acted as a bridge to mediate leukocyte adhesion, and platelet-mediated adhesion was the predominant pattern in the presence of platelets. However, platelet pre-incubation significantly suppressed leukocyte transendothelial migration after hypoxia-reoxygenation(over 31%), which could be aggravated by blockade of endothelial-cell-expressed adhesion molecules, but alleviated by blockade of platelet-expressed adhesion molecules. This would indicate that platelet-mediated adhesion disrupted leukocyte transendothelial migration. An in vivo mesenteric ischemia-reperfusion model demonstrated leukocyte transfusion alone caused mild leukocyte adhesion to reperfused vessels and subsequent leukocyte infiltration, while simultaneous leukocyte and platelet transfusion led to massive leukocyte adhesion and sequestration within reperfused microvessels. Our studies revealed platelets enhanced leukocyte adhesion to endothelial cells, but suppressed leukocyte transendothelial migration. Overall, this leads to leukocyte sequestration in hypoxia-reoxygenated microvessels. | Senfeng Zheng Yanting Cao Wenjian Zhang Honglin Liu Jia You Yiqing Yin Jinning Lou Chenghui Li | 2016 | Science China(Life Sciences)2016，59，3： | 3 |
| 5 | Long-term daily dataset of surface sensible heat flux and latent heat release over the Tibetan Plateau based on routine meteorological observations显示文摘As the main components of the atmospheric heat source/sink over the Tibetan Plateau(TP),up-to-date spatiotemporal fields of surface sensible heat flux and latent heat release by precipitation are vital for investigating the local land-atmosphere interaction and the effect of the thermal forcing of the TP on global weather and climate.This study recalculates the long-term daily dataset of surface sensible heat flux and latent heat release of condensation over the TP based on 293 routine meteorological observations,with the latest date being 31 December 2019.Most stations have adequate and valid records during the period 1981-2019,and the results for 1951-1980 are also calculated if the observations are available.Moreover,a brief evaluation of the climatology and long-term variation during 1981-2019 is conducted.By providing the most continuous and longest set of observational surface sensible heat flux and latent heat release of condensation data over the TP with a high degree of credibility,this new dataset will support research concerning the multi-timescale variation of diabatic heating/cooling over the TP and its remote influence.It is openly available on the LASG data-sharing platform(http://gffzza13a34b6ae8b4fa1h0qkkq05fccup6vwx.ffgz.tsg.suse.edu.cn/TPSHLH/). | Anmin Duan Senfeng Liu Wenting Hu Die Hu Yuzhuo Peng | 2022 | Big Earth Data2022，6，4： | 2 |
| 6 | Electronics based on two-dimensional materials:Status and outlook显示文摘Since Moore’s law in the traditional semiconductor industry is facing shocks,More Moore and More than Moore are proposed as two paths to maintain the development of the semiconductor industry by adopting new architectures or new materials,in which the former is committed to the continued scaling of transistors for performance enhancement,and the latter pursues the realization of functional diversification of electronic systems.Two-dimensional(2D)materials are supposed to play an important role in these two paths.In More Moore,the ultimate thin thickness and the dangling-bond-free surface of 2D channels offer excellent gate electrostatics while avoiding the degradation of carrier mobility at the same time,so that the transistors can be further scaled down for higher performance.In More than Moore,devices based on 2D materials can well meet the requirements of electronic systems for functional diversity,like that they can operate at high frequency,exhibit excellent sensitivity to the changes in the surroundings at room temperature,have good mechanical flexibility,and so on.In this review,we present the application of 2D materials in More Moore and More than Moore domains of electronics,outlining their potential as a technological option for logic electronics,memory electronics,radio-frequency electronics,sensing electronics,and flexible electronics. | Senfeng Zeng Zhaowu Tang Chunsen Liu Peng Zhou | 2021 | Nano Research2021，14，6： | 2 |
| 7 | Enhancement of refresh time in quasi-nonvolatile memory by the density of states engineering显示文摘The recently reported quasi-nonvolatile memory based on semi-floating gate architecture has attracted extensive attention thanks to its potential to bridge the large gap between volatile and nonvolatile memory.However,the further extension of the refresh time in quasi-nonvolatile memory is limited by the charge leakage through the p-n junction.Here,based on the density of states engineered van der Waals heterostructures,the leakage of electrons from the floating gate to the channel is greatly suppressed.As a result,the refresh time is effectively extended to more than 100 s,which is the longest among all previously reported quasi-nonvolatile memories.This work provides a new idea to enhance the refresh time of quasi-nonvolatile memory by the density of states engineering and demonstrates great application potential for high-speed and low-power memory technology. | Zhaowu Tang Chunsen Liu Senfeng Zeng Xiaohe Huang Liwei Liu Jiayi Li Yugang Jiang David Wei Zhang Peng Zhou | 2021 | Journal of Semiconductors2021，42，2： | 1 |
| 8 | Ultrafast flash memory with large self-rectifying ratio based on atomically thin MoS_(2)-channel transistor显示文摘Flash memory with high operation speed and stable retention performance is in great demand to meet the requirements of big data.In addition,the realisation of ultrafast flash memory with novel functions offers a means of combining heterogeneous components into a homogeneous device without considering impedance matching.This report proposes a 20 ns programme flash memory with 10^(8) self-rectifying ratios based on a 0.65 nm-thick MoS_(2)-channel transistor.A high-quality van der Waals heterojunction with a sharp interface is formed between the Cr/Au metal floating layer and h-BN tunnelling layer.In addition,the large rectification ratio and low ideality factor(n=1.13)facilitate the application of the MoS_(2)-channel flash memory as a bit-line select transistor.Finally,owing to the ultralow MoS_(2)/h-BN heterojunction capacitance(50 fF),the memory device exhibits superior performance as a high-frequency(up to 1 MHz)sine signal rectifier.These results pave the way toward the potential utilisation of multifunctional memory devices in ultrafast two-dimensional NAND-flash applications. | Liwei Liu Yibo Sun Xiaohe Huang Chunsen Liu Zhaowu Tang Senfeng Zeng David Wei Zhang Shaozhi Deng Peng Zhou | 2022 | Materials Futures2022，1，2： | 0 |
| 9 | Different Asian Monsoon Rainfall Responses to Idealized Orography Sensitivity Experiments in the HadGEM3-GA6 and FGOALS-FAMIL Global Climate Models显示文摘Recent work has shown the dominance of the Himalaya in supporting the Indian summer monsoon(ISM),perhaps by surface sensible heating along its southern slope and by mechanical blocking acting to separate moist tropical flow from drier midlatitude air.Previous studies have also shown that Indian summer rainfall is largely unaffected in sensitivity experiments that remove only the Tibetan Plateau.However,given the large biases in simulating the monsoon in CMIP5 models,such results may be model dependent.This study investigates the impact of orographic forcing from the Tibetan Plateau,Himalaya and Iranian Plateau on the ISM and East Asian summer monsoon(EASM) in the UK Met Office's Had GEM3-GA6 and China's Institute of Atmospheric Physics FGOALS-FAMIL global climate models.The models chosen feature oppositesigned biases in their simulation of the ISM rainfall and circulation climatology.The changes to ISM and EASM circulation across the sensitivity experiments are similar in both models and consistent with previous studies.However,considerable differences exist in the rainfall responses over India and China,and in the detailed aspects such as onset and retreat dates.In particular,the models show opposing changes in Indian monsoon rainfall when the Himalaya and Tibetan Plateau orography are removed.Our results show that a multi-model approach,as suggested in the forthcoming Global Monsoon Model Intercomparison Project(GMMIP) associated with CMIP6,is needed to clarify the impact of orographic forcing on the Asian monsoon and to fully understand the implications of model systematic error. | Kai Chi WONG Senfeng LIU Andrew G. TURNER Reinhard K. SCHIEMANN | 2018 | Advances in Atmospheric Sciences2018，35，8： | 0 |
| 10 | █████显示文摘The recently reported quasi-nonvolatile memory based on semi-floating gate architecture has attracted extensive attention thanks to its potential to bridge the large gap between volatile and nonvolatile memory.However,the further extension of the refresh time in quasi-nonvolatile memory is limited by the charge leakage through the p-n junction.Here,based on the density of states engineered van der Waals heterostructures,the leakage of electrons from the floating gate to the channel is greatly suppressed.As a result,the refresh time is effectively extended to more than 100 s,which is the longest among all previously reported quasi-nonvolatile memories.This work provides a new idea to enhance the refresh time of quasi-nonvolatile memory by the density of states engineering and demonstrates great application potential for high-speed and low-power memory technology. | Zhaowu Tang Chunsen Liu Senfeng Zeng Xiaohe Huang Liwei Liu Jiayi Li Yugang Jiang David Wei Zhang Peng Zhou | 2021 | Journal of Semiconductors2021，42，2： | 0 |
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