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| 1 | ICESat/GLAS-derived changes in the water level of Hulun Lake, Inner Mongolia, from 2003 to 2009显示文摘Hulun Lake is the largest freshwater lake innorthern Inner Mongolia and even minor changes in itslevel may have major effects on the ecology of the lake andthe surrounding area. In this study, we used high-precisionelevation data for the interval from 2003-2009 measuredby the Geoscience Laser Altimetry System (GLAS) onboard the Ice, Cloud, and land Elevation Satellite (ICESat)to assess annual and seasonal water level variations ofHulun Lake. The altimetry data of 32 satellite tracks wereprocessed using the RANdom SAmple Consensus algo-rithm (RANSAC) to eliminate elevation outliers, andsubsequently the Normalized Difference Water Index(NDWI) was used to delineate the area of the lake. From2003-2009, the shoreline of Hulun Lake retreatedwestwards, which was especially notable in the southernpart of the lake. There was only a small decrease in waterlevel, from 530.72 m to 529.22 m during 2003-2009, anaverage rate of 0.08 m/yr. The area of the lake decreased ata rate of 49.52 km^2/yr, which was mainly the result of theshallow bathymetry in the southern part of the basin. Thedecrease in area was initially rapid, then much slower, andfinally rapid again. Generally, the lake extent and waterlevel decreased due to higher temperatures, intenseevaporation, low precipitation, and decreasing runoff.And their fluctuations were caused by a decrease in intra-annual temperature, evaporation, and a slight increase inprecipitation. Overall, a combination of factors related toclimate change were responsible for the variations of thewater level of Hulun Lake during the study interval. Theresults improve our understanding of the impact of climatechange on Hulun Lake and may facilitate the formulationof response strategies. | Chunlan LI Jun WANG Richa HU Shan YIN Yuhai BAO Yuwei LI | 2018 | Frontiers of Earth Science2018，12，2： | 3 |
| 2 | Modulating the optical and electrical properties of MAPbBr_(3) single crystals via voltage regulation engineering and application in memristors显示文摘Defect density is one of the most significant characteristics of perovskite single crystals(PSCs)that determines their optical and electrical properties,but few strategies are available to tune this property.Here,we demonstrate that voltage regulation is an efficient method to tune defect density,as well as the optical and electrical properties of PSCs.A three-step carrier transport model of MAPbBr_(3) PSCs is proposed to explore the defect regulation mechanism and carrier transport dynamics via an applied bias.Dynamic and steady-state photoluminescence measurements subsequently show that the surface defect density,average carrier lifetime,and photoluminescence intensity can be efficiently tuned by the applied bias.In particular,when the regulation voltage is 20 V(electrical poling intensity is 0.167 Vμm^(−1)),the surface defect density of MAPbBr_(3) PSCs is reduced by 24.27%,the carrier lifetime is prolonged by 32.04%,and the PL intensity is increased by 112.96%.Furthermore,a voltage-regulated MAPbBr_(3) PSC memristor device shows an adjustable multiresistance,weak ion migration effect and greatly enhanced device stability.Voltage regulation is a promising engineering technique for developing advanced perovskite optoelectronic devices. | Jun Xing Chen Zhao Yuting Zou Wenchi Kong Zhi Yu Yuwei Shan Qingfeng Dong Ding Zhou Weili Yu Chunlei Guo | 2020 | Light(Science & Applications)2020，9，1： | 3 |
| 3 | Single cell analysis reveals inhibition of angiogenesis attenuates the progression of heterotopic ossification in Mkx^(−/−)mice显示文摘Tendon heterotopic ossification(HO)is characterized by bone formation inside tendon tissue,which severely debilitates people in their daily life.Current therapies fail to promote functional tissue repair largely due to our limited understanding of HO pathogenesis.Here,we investigate the pathological mechanism and propose a potential treatment method for HO.Immunofluorescence assays showed that the Mohawk(MKX)expression level was decreased in human tendon HO tissue,coinciding with spontaneous HO and the upregulated expression of osteochondrogenic and angiogenic genes in the tendons of Mkx^(−/−)mice.Single-cell RNA sequencing analyses of wild-type and Mkx^(−/−)tendons identified three cell types and revealed the excessive activation of osteochondrogenic genes during the tenogenesis of Mkx^(−/−)tendon cells.Single-cell analysis revealed that the gene expression program of angiogenesis,which is strongly associated with bone formation,was activated in all cell types during HO.Moreover,inhibition of angiogenesis by the small-molecule inhibitor BIBF1120 attenuated bone formation and angiogenesis in the Achilles tendons of both Mkx mutant mice and a rat traumatic model of HO.These findings provide new insights into the cellular mechanisms of tendon HO and highlight the inhibition of angiogenesis with BIBF1120 as a potential treatment strategy for HO. | Junxin Lin Yuwei Yang Wenyan Zhou Chao Dai Xiao Chen Yuanhao Xie Shan Han Huanhuan Liu Yejun Hu Chenqi Tang Varitsara Bunpetch Dandan Zhang Yishan Chen Xiaohui Zou Di Chen Wanlu Liu Hongwei Ouyang | 2022 | Bone Research2022，10，4： | 1 |
| 4 | Development of a Novel Kilowatt Microwave Plasma Torch Source for Atomic Emission Spectrometry显示文摘 | ZHU Dan JIN Wei YU Bingwen YING Yangwei YU Haixiang SHAN Jin YAN Yuwei XU Chen WANG Baolai JIN Qinhan | 2017 | Chemical Research in Chinese Universities2017，33，5： | 1 |
| 5 | A Photoelectric-Stimulated MoS_(2) Transistor for Neuromorphic Engineering显示文摘The von Neumann bottleneck has spawned the rapid expansion of neuromorphic engineering and brain-like networks.Synapses serve as bridges for information transmission and connection in the biological nervous system.The direct implementation of neural networks may depend on novel materials and devices that mimic natural neuronal and synaptic behavior.By exploiting the interfacial effects between MoS_(2) and AlOx,we demonstrate that an h-BN-encapsulated MoS_(2) artificial synapse transistor can mimic the basic synaptic behaviors,including EPSC,PPF,LTP,and LTD.Efficient optoelectronic spikes enable simulation of synaptic gain,frequency,and weight plasticity.The Pavlov classical conditioning experiment was successfully simulated by electrical tuning,showing associated learning behavior.In addition,h-BN encapsulation effectively improves the environmental time stability of our devices.Our h-BN-encapsulated MoS_(2) artificial synapse provides a new paradigm for hardware implementation of neuromorphic engineering. | Shuiyuan Wang Xiang Hou Lan Liu Jingyu Li Yuwei Shan Shiwei Wu David Wei Zhang Peng Zhou | 2019 | Research2019，，1： | 1 |
| 6 | Birefringent response of graphene oxide film structurized via femtosecond laser显示文摘In-plane birefringent materials present an effective modulation of the optical properties and more degrees of freedom for the signal detection in low dimension,and thus remain a hot topic in realizing the integrated,miniature,and flexible devices for multiple applications.Here,the artificial in-plane birefringence properties have been successfully achieved on a graphene oxide film by a novel femtosecond laser lithography method,which provides a high-speed,large-area,and regular subwavelength gratings(~380 nm)fabrication and photoreduction.The obtained sample manifests an evident optical birefringence(~0.18)and anisotropic photoresponse(~1.21)in the visible range,both of which can be significantly modulated by either the structural morphology or the degree of oxide reduction.Based on the analysis of effective-medium theory and measurements of angle-resolved polarized Raman spectroscopy,the artificial in-plane birefringence is originated from various optical responses of the periodic subwavelength structures for the incident light with different polarization states.This technique shows great advantages for the fabrication of integrated in-plane polarization-dependent devices,which is expected to solve the problems in this field,such as the deficient selection of materials,complex design of micro/nanostructure,and inflexible processing technology. | Tingting Zou Bo Zhao Wei Xin Feiyue Wang Hongbo Xie Yuhang Li Yuwei Shan Kun Li Yanbing Sun Jianjun Yang | 2022 | Nano Research2022，15，5： | 1 |
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