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| 1 | LncRNA Dum interacts with Dnmts to regulate Dppa2 expression during myogenic differentiation and muscle regeneration显示文摘新兴的研究在少些在染色质水平,但是相对调整基因表示记录长非编码的 RNA (LncRNAs ) 的角色被知道他们怎么调整 DNA methylation。这里,我们识别 lncRNA, Dum (发展联系 pluripotency 2 (Dppa2 ) 在上游的有约束力的肌肉 lncRNA ) 在骨胳的 myoblast 房间。Dum 的表示动态地在 vitro 并且在 vivo 在 myogenesis 期间被调整。它被在 myoblast 区别之上有约束力的 MyoD transcriptionally 也导致。功能的分析证明它支持 myoblast 区别和导致损坏的肌肉新生。机械学地, Dum 被发现它的附近的基因到沉默, Dppa2,在通过招募的 cis Dnmt1, Dnmt3a 和 Dnmt3b。而且, intrachromosomal 在 Dum 地点和 Dppa2 倡导者之间循环为 Dum/Dppa2 相互作用是必要的。一起,我们识别了与 Dnmts 交往调整 myogenesis 的新奇 lncRNA。 | Lijun Wang Yu Zhao Xichen Bao Xihua Zhu Yvonne Ka-yin Kwok Kun Sun Xiaona Chen Yongheng Huang Ralf Jauch Miguel A Esteban Hao Sun Huating Wang | 2015 | Cell Research2015，25，3： | 34 |
| 2 | Foraging strategies in the greater horseshoe bat(Rhinolophus ferrumequinum)on Lepidoptera in summer显示文摘The diet of the bat Rhinolophus ferrumequinum was studied at the Zhi’an Village of Ji’an City in China, from June to August 2004. The bats were trained in a laboratory (volume: 9×4×4 m3). Foraging strategies of the bat were ob- served at night and prey remains were collected and identi- fied. The results showed that the diet consisted mainly of Lepidoptera in summer, including 11 families, more than 30 species of moths, such as Noctuidae (36.6% by number), Sphingidae (24.1%), Geometridae (13.4%) and Limacodidae (9.5%). The length of culled wings ranged from 10―40 mm (97.7%). Pearson correlation analysis showed that the bat R. ferrumequinum foraged their prey selectively, but not op- portunistically. From field studies, two ways were observed in which the bats retrieved their prey including aerial hawk- ing during peak active period of the insects and flycatching during the insects’ non-peak activity period. The bats never gleaned prey from the ground, though they appeared to be well able to detect fluttering moths on the ground. | JIN Longru FENG Jiang SUN Keping LIU Ying WU Lei LI Zhenxin ZHANG Xichen | 2005 | Chinese Science Bulletin2005，50，14： | 5 |
| 3 | The structural change of Cu-Sn melt显示文摘With the high-temperature viscometer and magnetic susceptibility measurement device designed by our group,the viscosity and the magnetic susceptibility of the Cu65Sn35 melt were measured during the cooling process.An anomalous change can be found in the curves of viscosity and magnetic susceptibility at a certain temperature.The structure of the melt was studied by the high-temperature X-ray diffractometer.The anomalous change also can be found in the pair distribution function,correlation radius,and coordination number at the approximate tem-perature,which shows the microstructural change of the Cu65Sn35 melt.From the results,it was confirmed that the Cu6Sn5 compound occurs in the melt,which leads to the structural change of the melt. | HOU JiXin SUN JianJun ZHAN ChengWei TIAN XueLei CHEN XiChen | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，4： | 2 |
| 4 | Biomass-based aligned carbon networks with double-layer construction for tunable electromagnetic shielding with ultra-low reflectivity显示文摘Nowadays,carbon frameworks derived from natural biomaterials have attracted extensive attention for electromagnetic interference(EMI)shielding due to their renewability and affordability.However,it is critical and challenging to achieve effective regulation of shielding effectiveness(SE)as well as weaken the strong EM reflection of highly conductive biomass-based carbon materials.Herein,commercial cotton pads with oriented structure were selected as carbonaceous precursor to fabricate aligned carbon networks by pyrolysis,and the EMI SE of the samples with increased temperature of 800-1000℃ can be accurately controlled in the effective range of~21.7-29.1,~27.7-37.1 and~32.7-43.3 d B with high reflection coefficient of>0.8 by changing the cross-angle between the electric-field direction of incident EM waves and the fiber-orientation direction due to the occurrence of opposite internal electric field.Moreover,the further construction of Salisbury absorber-liked double-layer structure could result in an ultralow reflection coefficient of only~0.06 but enhanced SE variation range up to~38.7-49.3 d B during the adjustment of cross-angle,possibly due to the destructive interference of EM waves in the double-layer carbon networks.This work would provide a simple and effective way for constructing high-performance biomass carbon materials with adjustable EMI shielding and ultra-low reflectivity. | Jiali Chen Da Yi Xichen Jia Guoqing Wang Zhouping Sun Lihua Zhang Yinfeng Liu Bin Shen Wenge Zheng | 2022 | Journal of Materials Science & Technology2022，，8： | 2 |
| 5 | Further results on the subspace distance显示文摘 | SUN Xichen WANG Liwei FENG Jufu | 2007 | Pattern Recognition2007，40，1： | 1 |
| 6 | Further Results on the Subspace Distance显示文摘 | Sun Xichen Wang Liwei Feng Jufu | 2007 | Pattern Recognition2007，40，1： | 1 |
| 7 | Numerical Study of the Effect of Imaginary Circle Diameter and Initial Flow Field on the Aerodynamic Field in a Tangentially Fired Furnace显示文摘In this paper, the effect of the imaginary circle diameter opi and the initial flow field on the aerodynamic field in a tangentially fired furnace was studied by numerical simulation and experiments in the cold model. Results show that merely reducing the imaginary circle diameter rki can not significantly reduce the rotatiollal diameter op in the range considered. The flow still rotates coullter-clockwise stably and does not change rotation direction when the direction of all jet axes are defiected suddenly to the opposite rotation direction by up to 5.4' in a countereclockwise llow field. It is the first time that the numerical sAnulation results were obtained which agreed quite well with this experimental phenomena qualitatively. The experimental data, i.e., the rotational diameter & and the maximum velocity on the syrnmetric central line of fUrnace Vm, are only a bit larger than the simulation results. It is shown that the initial flow field has an important influence on the aerodynamic field in the furnace. Other measures have to be taken as wel1 in order to reduce & to resist slagging and high temperature corrosion of furnace tubes. Moreover, a new kind of grid arrangement was proposed in this paper, which can reduce effectively the false diffosion at the exit zone of burner. | Zhu Tong Sun Shaozeng Xia Chunyi An Baizeng Wu Shaohua Qin Yukun(School of Energy Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China)Ma Xichen(Haxbin Boiler Works) | 1997 | Journal of Thermal Science1997，6，2： | 1 |
| 8 | China’s Recent Progresses in Polar Climate Change and Its Interactions with the Global Climate System显示文摘During the recent four decades since 1980,a series of modern climate satellites were launched,allowing for the measurement and record-keeping of multiple climate parameters,especially over the polar regions where traditional observations are difficult to obtain.China has been actively engaging in polar expeditions.Many observations were conducted during this period,accompanied by improved Earth climate models,leading to a series of insightful understandings concerning Arctic and Antarctic climate changes.Here,we review the recent progress China has made concerning Arctic and Antarctic climate change research over the past decade.The Arctic temperature increase is much higher than the global-mean warming rate,associated with a rapid decline in sea ice,a phenomenon called the Arctic Amplification.The Antarctic climate changes showed a zonally asymmetric pattern over the past four decades,with most of the fastest changes occurring over West Antarctica and the Antarctic Peninsula.The Arctic and Antarctic climate changes were driven by anthropogenic greenhouse gas emissions and ozone loss,while tropical-polar teleconnections play important roles in driving the regional climate changes and extreme events over the polar regions.Polar climate changes may also feedback to the entire Earth climate system.The adjustment of the circulation in both the troposphere and the stratosphere contributed to the interactions between the polar climate changes and lower latitudes.Climate change has also driven rapid Arctic and Southern ocean acidification.Chinese researchers have made a series of advances in understanding these processes,as reviewed in this paper. | Xichen LI Xianyao CHEN Bingyi WU Xiao CHENG Minghu DING Ruibo LEI Di QI Qizhen SUN Xiaoyu WANG Wenli ZHONG Lei ZHENG Meijiao XIN Xiaocen SHEN Chentao SONG Yurong HOU | 2023 | Advances in Atmospheric Sciences2023，40，8： | 1 |
| 9 | 一座梯田式的曲线书山——天津滨海图书馆显示文摘项目地点:天津滨海新区项目面积:33,700平方米完成时间:2017项目功能:图书馆合作建筑师:中国天津市城市规划设计研究院建筑分院室内设计:天津市建筑设计院灯光照明:华谊建源照明设计所有项目资料由MVRDV事务所提供MVRDV与天津城市规划设计研究院合作建成天津滨海图书馆,于10月正式开放:这个全新的33,700m2文化中心以中庭的发光球形报告厅为焦点,四周环绕着梯田般层叠的书架,书架贯穿中央天井与球体相呼应。波浪式的书架是建筑中的主要空间元素,既界定了空间。 | Winy Maas Jacob van Rijs Nathalie de Vries Wenchian Shi María López Calleja Chi Li ángel Sánchez Navarro Daehee Suk Guang Ruey Tan Xichen Sun Michael Zhang Kyosuk Lee Mariya Gyaurova Jaime Dominguez Bálgoma Antonio Luca Coco Costanza Cuccato Matteo Artico Tomaso Maschietti Ossip van Duivenbode | 2017 | 设计家2017，，3： | 0 |
| 10 | Zeolite-encaged Ultrasmall Pt-Zn Species with Trace Amount of Pt for Efficient Propane Dehydrogenation显示文摘Propane dehydrogenation(PDH)has become a globe-welcoming technology to meet the massive demand for propylene,but the most commonly used Pt-based catalysts suffer from quick sintering,poor selectivity for propylene,and unsatisfied Pt utilization.Herein,a series of Silicalite-1(S-1)zeolite-encaged ultrasmall Pt-Zn clusters with a trace amount of Pt[40—180 ppm(parts per million)]were developed by using a one-pot ligand-protected direct H_(2) reduction method.Interestingly,the extremely low amount of Pt can significantly promote the activity of zeolite-encaged Zn catalysts in PDH reactions.Thanks to the high Pt dispersion,the synergy between Pt and Zn species,and the confinement effect of zeolites,the optimized PtZn@S-1 catalyst with 180 ppm Pt and 1.88%(mass fraction)Zn,exhibited an extraordinarily high propane conversion(33.9%)and propylene selectivity(99.5%)at 550℃with a weight hourly space velocity(WHSV)of 8 h^(-1),affording an extremely high propylene formation rate of 340.7 mol_(C_(3)H_(6))·g_(Pt^(-1))·h^(-1).This work provides a reference for the preparation of zeolite-encaged metal catalysts with high activity and noble metal utilization in PDH reactions. | QU Ziqiang ZHANG Tianjun YIN Xichen ZHANG Junyi XIONG Xiaoyun SUN Qiming | 2023 | Chemical Research in Chinese Universities2023，39，6： | 0 |
| 11 | Nonlinear fusion filters based on prediction and smoothing显示文摘To attenuate white noise, nonstationary noise and impulse noise are important for signal processing. In this letter, we present nonlinear fusion filters (NFF) based on prediction and smoothing. By means of least square fitting of a polynomial, we define and give the operators of left prediction and right prediction, left smoothing and right smoothing, central smoothing and cross-validation smoothing. In simulated experiments, it is shown that the present method is an effective one. | Qiansheng Cheng Xiaobo Zhou Xichen Sun | 2000 | Chinese Science Bulletin2000，45，18： | 0 |
| 12 | Evaluation of temporal compositing algorithms for annual land cover classification using Landsat time series data显示文摘In this paper, four widely used temporal compositing algorithms, i.e.median, maximum NDVI, medoid, and weighted scoring-basedalgorithms, were evaluated for annual land cover classification usingmonthly Landsat time series data. Four study areas located in California,Texas, Kansas, and Minnesota, USA were selected for image compositingand land cover classification. Results indicated that images compositedusing weighted scoring-based algorithms have the best spatial fidelitycompared to other three algorithms. In addition, the weighted scoringbasedalgorithms have superior classification accuracy, followed bymedian, maximum NDVI, and medoid in descending order. However, themedian algorithm has a significant advantage in computational efficiencywhich was ~70 times that of weighted scoring-based algorithms, andwith overall classification accuracy just slightly lower (~0.13% onaverage) than weighted scoring-based algorithms. Therefore, werecommended the weighted scoring-based compositing algorithms forsmall area land cover mapping, and median compositing algorithm forthe land cover mapping of large area considering the balance betweencomputational complexity and classification accuracy. The findings of thisstudy provide insights into the performance difference between variouscompositing algorithms, and have potential uses for the selection ofpixel-based image compositing technique adopted for land covermapping based on Landsat time series data. | Xichen Meng Shuai Xie Lin Sun Liangyun Liu Yilong Han | 2023 | International Journal of Digital Earth2023，16，1： | 0 |
| 13 | Trichomonas vaginalis induces extracellular trap release in mouse neutrophils in vitro显示文摘Trichomonas vaginalis,a zoonotic anaerobic parasite first discovered in the secretions of vaginitis patients in 1836,is mainly transmitted through sexual activities.In addition,T.vaginalis can also be transmitted through indirect contact in public swimming pools,toilets,bathtubs,etc.Infected females suffer from diseases such as vaginitis,urethritis,miscarriage,and premature birth,while infected males are mostly asymptomatic carriers or with chronic urethral inflammation and prostate inflammation,which can cause infertility in severe cases.Infection with T.vaginalis increases the risk of human immunodeficiency virus infection[1]. | Yuhang Gao Xin Li Nan Zhang Panpan Zhao Shan Li Lixin Tai Xinyu Li Ling Li Jianhua Li Xichen Zhang Min Sun Lili Cao Pengtao Gong | 2021 | Acta Biochimica et Biophysica Sinica2021，53，12： | 0 |
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