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| 1 | The TanSat mission: preliminary global observations显示文摘The Chinese global carbon dioxide monitoring satellite (Tan Sat) was launched successfully in December2016 and has completed its on-orbit tests and calibration. Tan Sat aims to measure the atmospheric column-averaged dry air mole fractions of carbon dioxide (XCO_2) with a precision of 4 ppm at the regional scale, and in addition, to derive global and regional CO2fluxes. Progress towards these objectives is reviewed and the first scientific results from Tan Sat measurements are presented. Tan Sat on-orbit tests indicate that the Atmospheric Carbon dioxide Grating Spectrometer is in normal working status and is beginning to produce L1B products. The preliminary Tan Sat XCO_2products have been retrieved by an algorithm and compared to NASA Orbiting Carbon Observatory-2 (OCO-2) measurements during an overlapping observation period. Furthermore, the XCO_2retrievals have been validated against eight groundsite measurement datasets from the Total Carbon Column Observing Network, for which the preliminary conclusion is that Tan Sat has met the precision design requirement, with an average bias of 2.11 ppm.The first scientific observations are presented, namely, the seasonal distributions of XCO_2over land on a global scale. | Yi Liu Jing Wang Lu Yao Xi Chen Zhaonan Cai Dongxu Yang Zengshan Yin Songyan Gu Longfei Tian Naimeng Lu Daren Lyu | 2018 | Science Bulletin2018，63，18： | 23 |
| 2 | microRNA-29b is a novel mediator of Sox2 function in the regulation of somatic cell reprogramming显示文摘成纤维细胞能由 Yamanaka 因素(OSKM ) 的申请是进导致的 pluripotent 干细胞(iPSCs ) 的 reprogrammed,但是位于这 reprogramming 下面的机制仍然保持糟糕理解。这里,我们报导 Sox2 直接调整内长的 microRNA-29b (miR-29b ) 表示为调停 OSKM 、调停 OSK 的 reprogramming 在 iPSC 产生和那 miR-29b 表情期间被要求。Dnmt3a 和 Dnmt3b 在 miR-29b 和那 Dnmt3a 和 Dnmt3b 表示的 vivo 目标的机械学的研究表演相反地在 reprogramming 期间与 miR-29b 表示被相关。而且, reprogramming 上的 miR-29b 的效果能被 Dnmt3a 或 Dnmt3b overexpression 堵住。进一步的实验显示发信号的 miR-29b-DNMT 显著地涉及 DNA methylation 相关的 reprogramming 事件的规定,例如 mesenchymal-to-epithelial 转变(相遇) 并且 Dlk1-Dio3 区域抄写。因此,我们的研究不仅表明 miR-29b 是 reprogramming 因素 Sox2 的一个新奇调停人而且为 Sox2 在驾驶表明调整 DNA 的轴的 miR-29b-DNMT 的 multistep 机制提供证据 methylation 相关的事件在 reprogramming 期间。 | Xudong Guo Qidong Liu Guiying Wang Songcheng Zhu Longfei Gao Wujun Hong Yafang Chen Minjuan Wu Houqi Liu Cizhong Jiang Jiuhong Kang | 2013 | Cell Research2013，23，1： | 9 |
| 3 | Mitigation of cross-eye jamming using a dual-polarization array显示文摘This paper presents an approach for mitigating the cross-eye jamming using a dual-polarization array. By transmitting a sum beam and a difference beam in two orthogonal polarimetric channels, a synthesized transmitted beam with spatially varying polarization is produced, such that the polarization of the transmitted radar wave varies in azimuth or elevation. Thus, the phases of the signals received on the two antennas of a cross-eye jammer become unequal, and an additional phase difference is introduced to disrupt the 180? phase shifting in the retrodirective loop of the jammer. By means of beam scanning in a small angular range,the optimal beam steering configuration can be found to maximize the phase error for the mitigation of cross-eye jamming. As a result, the jamming performance of the cross-eye jammer degrades largely. Theoretical analysis and simulation results indicate that the proposed method is valid and feasible. | MA Jiazhi SHI Longfei XIAO Shunping WANG Xuesong | 2018 | Journal of Systems Engineering and Electronics2018，29，3： | 9 |
| 4 | Non‑Magnetic Bimetallic MOF‑Derived Porous Carbon‑Wrapped TiO2/ ZrTiO4 Composites for Efficient Electromagnetic Wave Absorption显示文摘Modern communication technologies put forward higher requirements for electromagnetic wave(EMW)absorption materials.Metal-organic framework(MOF)derivatives have been widely concerned with its diverse advantages.To break the mindset of magneticderivative design,and make up the shortage of monometallic non-magnetic derivatives,we first try non-magnetic bimetallic MOFs derivatives to achieve efficient EMW absorption.The porous carbon-wrapped TiO2/ZrTiO4 composites derived from PCN-415(TiZr-MOFs)are qualified with a minimum reflection loss of−67.8 dB(2.16 mm,13.0 GHz),and a maximum effective absorption bandwidth of 5.9 GHz(2.70 mm).Through in-depth discussions,the synergy of enhanced interfacial polarization and other attenuation mechanisms in the composites is revealed.Therefore,this work confirms the huge potentials of nonmagnetic bimetallic MOFs derivatives in EMW absorption applications. | Jing Qiao Xue Zhang Chang Liu Longfei Lyu Yunfei Yang Zhou Wang Lili Wu Wei Liu Fenglong Wang Jiurong Liu | 2021 | Nano-Micro Letters2021，13，5： | 7 |
| 5 | Polarization discrimination between repeater false-target and radar target显示文摘High fidelity repeater false-target badly affects a radar system's detecting, tracking, and data processing. It is an available approach of confronting false-target for radar that discriminates firstly and then eliminates. Whereas for the technique progress about the repeater false-target jam, it is more and more difficult to discriminate this jam in the time-domain, frequency-domain, or space-domain. The technique using polarization information to discriminate the target and false-target is discussed in this paper. With the difference that false-target signal vector's polarization ratio is fixed and target echo signal vector's polarization ratio is variational along with radar transmission signal's polarization, we transform the discrimination problem to beeline distinguish problem in the 2-dim complex space. The distributing characteristic expression of the false-target discrimination statistic is constructed, with which the discrimination ratio of false-target is analyzed. For the target case, the decomposed model of target scattering matrix and the concept of distinguish quantity are proposed. Then, the discrimination ratio of target can be forecasted according to target distinguish quantity. Thus, the performance of discrimination method has been analyzed integrally. The simulation results demonstrate the method in this paper is effective on the discrimination of target and false-target. | SHI LongFei WANG XueSong XIAO ShunPing | 2009 | Science in China(Series F)2009，52，1： | 6 |
| 6 | Cooperation of PprI and DrRRA in response to extreme ionizing radiation in Deinococcus radiodurans显示文摘Deinococcus radiodurans possesses extreme resistance to ionizing radiation,and has been engineered for the remediation of toxic components in radioactive environments.We have previously shown that PprI(also named IrrE)and DrRRA are essential for the DNA protection and repair pathways that respond to ionizing radiation stress in this species.Here,we investigated the combined roles of PprI and DrRRA in resistance to gamma radiation(800 Gy).The double mutant,△drRRA△pprI,was more sensitive to gamma rays than either△drRRA or△pprI single mutants,and exhibited an elevated level of intracellular protein carbonylation,an extended delay in genome reconstitution and reduced transcriptional levels of certain DNA protection and repair proteins,such as kat,sod,recA and pprA.Interestingly,the induction of DrRRA by ionizing radiation was partially inhibited by the deletion of pprI. Taken together,these results suggest that DrRRA and PprI might have collaborative roles in the response of D.radiodurans to extreme ionizing radiation. | WANG LiangYan YIN LongFei XU GuangZhi LI MingFeng ZHANG Hui TIAN Bin HUA YueJin | 2012 | Chinese Science Bulletin2012，57，1： | 6 |
| 7 | Synthesis and characterization of yttrium hydroxide and oxide microtubes显示文摘有六角形的阶段 Y 的六角形的微试管(哦)3 被一个灵巧的 solvothermal 方法成功地经由一条水晶转变线路当表面活化剂或模板不在时为 12 h 在 160 ° C 综合。扫描电子显微镜学(SEM ) 结果证明准备六角形的微试管与 50 100 nm, ∼1 μ m 的一条外部直径,并且长度在十测微计上面去的墙厚度。立方的阶段 Y 2 O 3 微试管在 Y 的热处理以后被获得(哦)3 在为 4 h 的 700 ° C 的微试管。Eu 3+-doped Y 2 有在 610 nm 的强壮的红排放的微试管也是的 O 3 准备了,他们的光致发光(PL ) 性质被学习。为微试管的形成的可能的机制简短被讨论。 | WANG Shijin ZHONG Shengliang WEN Zubiao WANG Yuling WANG Shangping CHEN Jianjun XU Rong LUO Longfei | 2009 | Rare Metals2009，28，5： | 5 |
| 8 | High-yield preparation of robust gold nanoshells on silica nanorattles with good biocompatiblity显示文摘Although gold nanoshells are widely considered as one of the promising photothermal nanomaterials used for biomedicine, the high cost, low yield and poor stability severely limit their potential application in clinical trials.Herein, robust gold nanoshells on silica nanorattles(GSNs)were easily prepared in a high yield by an improved seedmediated method employing polyvinylpyrrolidone(PVP) as a stabilizing and capping agent. The present method is very simple, effective and reproducible and can well control the growth process of gold nanoshells. The as-prepared GSNs have a narrow size distribution(<10 % in standard deviation). Furthermore, the utilization rate of Au in the solution used for the growth of gold nanoshells increases by 70 %than that in previous method. The resultant GSNs have a good structural stability after placing over 6 months due to the protection of PVP. More importantly, in vivo and in vitro toxic studies indicate that the GSNs have good biocompatibility. We believe that our preparation method will remarkably promote the use of gold nanoshells for biomedicine. | Changhui Fu Chaofeng He Longfei Tan Shunhao Wang Lu Shang Linlin Li Xianwei Meng Huiyu Liu | 2016 | Science Bulletin2016，61，4： | 5 |
| 9 | Ultraflat, broadband, and highly coherent supercontinuum generation in all-solid microstructured optical fibers with all-normal dispersion显示文摘High flatness, wide bandwidth, and high-coherence properties of supercontinuum(SC) generation in fibers are crucial in many applications. It is challenging to achieve SC spectra in a combination of the properties, since special dispersion profiles are required, especially when pump pulses with duration over 100 fs are employed. We propose an all-solid microstructured fiber composed only of hexagonal glass elements. The optimized fiber possesses an ultraflat all-normal dispersion profile, covering a wide wavelength interval of approximately 1.55 μm. An SC spectrum spanning from approximately 1030 to 2030 nm(corresponding to nearly one octave) with flatness<3 dB is numerically generated in the fiber with 200 fs pump pulses at 1.55 μm. The results indicate that the broadband ultraflat SC sources can be all-fiber and miniaturized due to commercially achievable 200-fs fiber lasers. Moreover, the SC pulses feature high coherence and a single pulse in the time domain, which can be compressed to 13.9-fs pulses with high quality even for simple linear chirp compensation. The Fourier-limited pulse duration of the spectrum is 3.19 fs, corresponding to only 0.62 optical cycles. | CHUNLEI HUANG MEISONG LIAO WANJUN BI XIA LI LILI HU LONG ZHANG LONGFEI WANG GUANSHI QIN TIANFENG XUE DANPING CHEN WEIQING GAO | 2018 | Photonics Research2018，6，6： | 4 |
| 10 | METTL4 is an snRNA m^6Am methyltransferase that regulates RNA splicing显示文摘Dear Editor,Protein coding mRNAs and non-coding RNAs are extensively modifed by chemical modifications,'including methylation of the N^6position of adenosine(m^6A).^2While mRNA internal m^6A methylation is mediated by METTL3 and METTL14,which are members of the MT-A70 family,N^6-methylation of cap-adjacent No,2'-O-dimethyladenosine(m^6Am)is catalyzed by PCIF1.^3-6 Non-coding RNAs are also m^6Am methylated internally,7but the corresponding enzyme remains unknown.Here we provide evidence that METTL4 mediates internal m^6Am methylation of U2 small nuclear RNA(snRNA). | Hao Chen Lei Gu Esteban A.Orellana Yuanyuan Wang Jiaojiao Guo Qi Liu Longfei Wang Zhangfei Shen Hao Wu Richard I.Gregory Yi Xing Yang Shi | 2020 | Cell Research2020，30，6： | 4 |
| 11 | LIN28 coordinately promotes nucleolar/ribosomal functions and represses the 2C-like transcriptional program in pluripotent stem cells显示文摘LIN28 is an RNA binding protein with important roles in early embryo development,stem cell differentiation/re-programming,tumorigenesis and metabolism.Previous studies have focused mainly on its role in the cytosol where it interacts with Let-7 microRNA precursors or mRNAs,and few have addressed LIN28's role within the nucleus.Here,we show that LIN28 displays dynamic temporal and spatial expression during murine embryo development.Maternal LIN28 expression drops upon exit from the 2-cell stage,and zygotic LIN28 protein is induced at the forming nucleolus during 4-cell to blas-tocyst stage development,to become dominantly expressed in the cytosol after implantation.In cultured pluripotent stem cells(PSCs),loss of LIN28 led to nucleolar stress and activation of a 2-cell/4-cell-like transcriptional program characterized by the expression of endogenous retrovirus genes.Mechanistically,LIN28 binds to small nucleolar RNAs and rRNA to maintain nucleolar integrity,and its loss leads to nucleolar phase separation defects,ribosomal stress and activation of P53 which in turn binds to and activates 2C transcription factor Dux.LIN28 also resides in a complex containing the nucleolar factor Nucleolin(NCL)and the transcrip-tional repressor TRIM28,and LIN28 loss leads to reduced occupancy of the NCL/TRIM28 complex on the Dux and rDNA loci,and thus de-repressed Dux and reduced rRNA expression.Lin28 knockout cells with nucleolar stress are more likely to assume a slowly cycling,translationally inert and anabolically inactive state,which is a part of previously unappreciated 2C-like transcriptional program.These findings elucidate novel roles for nucleolar LIN28 in PSCs,and a new mechanism linking 2C program and nucleolar functions in PSCs and early embryo development. | Zhen Sun Hua Yu Jing Zhao Tianyu Tan Hongru Pan Yuqing Zhu Lang Chen Cheng Zhang Li Zhang Anhua Lei Yuyan Xu Xianju Bi Xin Huang Bo Gao Longfei Wang Cristina Correia Ming Chen Qiming Sun Yu Feng Li Shen Hao Wu Jianlong Wang Xiaohua Shen George Q.Daley Hu Li Jin Zhang | 2022 | Protein & Cell2022，13，7： | 4 |
| 12 | A comparison of pilot scale electron beam and bench scale gamma irradiations of cyanide aqueous in solution显示文摘 | YE Longfei HE Shijun YANG Chunping WANG Jianlong YU Jiang | 2013 | Nuclear Science and Techniques2013，24，B12： | 4 |
| 13 | Thermal Analysis of a Volumetric Solar Receiver显示文摘The volumetric receiver has received wide attention due to its high thermal efficiency. This paper studied a new type of a solid-liquid composite volumetric receiver. The heat transfer in a solid-liquid composite volumetric solar receiver was analyzed using a one-dimensional unsteady simulation model of the solid-liquid receiver. The model included absorption of the incident solar radiation by the glass window, the silicon carbide porous ceramic heat absorber panel and the water. The results were verified against experimental data for a volumetric receiver and the error did not exceed 10%. It can be used to predict the heat transfer in solid-liquid composite volumetric receivers. | CHEN Longfei YANG Ming LI Jinping BAI Yakai LI Xiaoxia TANG Wenxue YANG Nancong WANG Zhifeng | 2019 | Journal of Thermal Science2019，28，6： | 4 |
| 14 | Temperature-dependent evolution of surface charge screening and polarization at ferroelectric surfaces显示文摘The polarization and domain behavior on the surface of a ferroelectric material are significantly affected by the screening processes [1-12].Recently,there has been a notable increase in the theoretical calculations and experiments investigating the dynamics of polarization and domain behaviors coexisting in phase transitions of ferroelectric materials. | LongFei Wang Yi Luo JieSu Wang XiuShi Huang ZhaoMeng Gao TieYing Yang XiaoLong Li Pei Li KuiJuan Jin WeiFeng Zhang HaiZhong Guo | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，8： | 3 |
| 15 | Paleoseismologic record of earthquakes along the Wuzunxiaoer section of the Altyn Tagh fault and its implication for cascade rupture behavior显示文摘The Altyn Tagh fault is one of the few great active strike-slip faults in the world. The recurrence characteristics of paleoearthquakes on this fault are still poorly understood due to the lack of paleoseismic records recorded in high-resolution strata. We document a paleoseismic record in a pull-apart basin along the Wuzunxiaoer section of the central Altyn Tagh fault.The high-resolution strata recorded abundant seismic deformations and their sedimentary responses. Four earthquakes are identified based on event evidence in the form of open fissures, thickened strata, angular unconformities, and folds. The occurrence times of the four events were constrained using radiocarbon dating. Event W1 occurred at AD1220–1773, events W2 and W3 occurred between 407 and 215 BC, and event W4 occurred slightly earlier at 1608–1462 BC, indicating clustered recurrence characteristics. A comparison of the earthquake records along the Wuzunxiaoer section with other records along the Xorkoli section suggests that both sections ruptured during the most recent event. | Zhaode YUAN Jing LIU-ZENG You ZHOU Zhigang LI Heng WANG Wenqian YAO Longfei HAN | 2020 | Science China Earth Sciences2020，63，1： | 3 |
| 16 | Searching for the Nano-Hertz Stochastic Gravitational Wave Background with the Chinese Pulsar Timing Array Data ReleaseⅠ显示文摘Observing and timing a group of millisecond pulsars with high rotational stability enables the direct detection of gravitational waves(GWs).The GW signals can be identified from the spatial correlations encoded in the times-of-arrival of widely spaced pulsar-pairs.The Chinese Pulsar Timing Array(CPTA)is a collaboration aiming at the direct GW detection with observations carried out using Chinese radio telescopes.This short article serves as a“table of contents”for a forthcoming series of papers related to the CPTA Data Release 1(CPTA DR1)which uses observations from the Five-hundred-meter Aperture Spherical radio Telescope.Here,after summarizing the time span and accuracy of CPTA DR1,we report the key results of our statistical inference finding a correlated signal with amplitude logA_(c)=-14.4_(-2.8)^(+1.0)for spectral index in the range ofα∈[-1.8,1.5]assuming a GW background(GWB)induced quadrupolar correlation.The search for the Hellings–Downs(HD)correlation curve is also presented,where some evidence for the HD correlation has been found that a 4.6σstatistical significance is achieved using the discrete frequency method around the frequency of 14 n Hz.We expect that the future International Pulsar Timing Array data analysis and the next CPTA data release will be more sensitive to the n Hz GWB,which could verify the current results. | Heng Xu Siyuan Chen Yanjun Guo Jinchen Jiang Bojun Wang Jiangwei Xu Zihan Xue RNicolas Caballero Jianping Yuan Yonghua Xu Jingbo Wang Longfei Hao Jingtao Luo Kejia Lee Jinlin Han Peng Jiang Zhiqiang Shen Min Wang Na Wang Renxin Xu Xiangping Wu Richard Manchester Lei Qian Xin Guan Menglin Huang Chun Sun Yan Zhu | 2023 | Research in Astronomy and Astrophysics2023，23，7： | 3 |
| 17 | Achieving adaptively secure data access control with privacy protection for lightweight IoT devices显示文摘The Internet of things(IoT) technology has been used in a wide range of fields, ranging from industrial manufacturing to daily lives. The IoT system contains numerous resource-constrained lightweight devices such as wireless sensors and radio frequency identification(RFID) tags. A massive amount of sensitive data is generated and transmitted by these devices to a variety of users. The complexity of the IoT system places a high demand on security. Therefore, it is necessary to develop an encryption scheme with access control to provide flexible and secure access to the sensitive data. The ciphertext policy attribute-based encryption(CP-ABE) scheme is a potential solution. However, the long ciphertext as well as the slow encryption and decryption operations in traditional ABE schemes make it inappropriate for most IoT systems,which require low latency and contain many devices with limited memory size and computing capability. In this paper, we propose a modified CP-ABE scheme with constant length of ciphertext and low computation overhead in the encryption and decryption phases. Additionally, our scheme is proven to be adaptively secure under the standard model. Moreover, two enhanced schemes are developed to prevent authorized users from leaking data and protect the privacy of data owners by combining chameleon hash, bloom filters and CP-ABE, respectively. Finally, the experimental evaluation and analysis prove the feasibility of our scheme. | Zhitao GUAN Wenti YANG Liehuang ZHU Longfei WU Ruimiao WANG | 2021 | Science China(Information Sciences)2021，64，6： | 3 |
| 18 | Experimental Study on Dynamic Mechanical Properties of Sprayed Concrete-Surrounding Rock Combined Body显示文摘To investigate the dynamic response problem of the double medium formed by the adherence of sprayed concrete and surrounding rock in the tunnel,a split Hopkinson pressure bar of 75 mm in diameter was adopted at the ages of 3,7 and 10 d.Experimental results showed that dynamic compressive strength and dynamic increase factors(DIF)of the combined bodies increase with the strain rate.With the growth of strain rate,the critical strain of the combined bodies first increases,then deceases.Furthermore,the combined bodies of 3 d reveal the plastic property and brittle property for 7 d and 10 d when the strain rate is over 80/s.The failure characteristic of the sprayed concrete changes from tearing strain damage to crushing damage as the growth of strain rate,and the failure characteristic of rock presents the tensile failure mode as demonstrated by the scanning electron microscope(SEM). | Dongming Guo Pengyang Yan Longfei Fan Yingshi Zhang Xiaoye Wang | 2019 | Journal of Beijing Institute of Technology2019，28，2： | 3 |
| 19 | Two single nucleotide polymorphisms in the GDF5 gene are associated with development dysplasia of the hip in Chinese female population显示文摘Development dysplasia of the hip(DDH)is one of the most common hip defects in newborns.The main phenotypes of the disease are partial or whole femoral head extrusion from the acetabulum[1].Because the frequency of DDH in monozygotic twins was higher than that in dizygotic twins,and the affected individuals were often in the same family[2],we are focusing on the genetic factor in the present study. | ZHAO LiXi PAN Hong WANG Jing CHENG Zhi CHENG LongFei WANG BinBin MA Xu | 2013 | Science China(Life Sciences)2013，56，11： | 3 |
| 20 | Metal sulfides based composites as promising efficient microwave absorption materials:A review显示文摘The increasingly severe electromagnetic microwave pollution raises higher requirements for the development of efficient microwave absorption(MA)materials.Metal sulfides are regarded as potential robust MA materials because of their unique optical,thermal,electrical,and magnetic properties,as well as the controllable microstructures.However,due to the limited MA performances of unary metal sulfides,morphology regulations and foreign materials hybridizations are adopted as effective strategies to improve their MA performances.Recent years witnessed the fast research progresses on the metal sulfides based MA materials and thus,a systematic literature survey on the materials design,fabrication,characterizations,MA behaviors,and the mechanisms behind is,highly desirable to summarize the rapid progress of this hot research area so as to provide guidance for the future development trend.This review firstly reviewed the research background,research progress,and basic principles of MA materials.Subsequently,the present synthetic methods and performance improvement strategies of metal sulfides based MA materials are systematically introduced.Then,by comparing the MA properties of one-dimensional,two-dimensional,and three-dimensional metal sulfides based composites,the influence of dimensionality and morphology on the MA properties are analyzed.By summarizing the research process of metal sulfides/dielectrics composites,metal sulfides/magnets composites,and metal sulfides/dielectrics/magnets composites MA materials,the influence of foreign materials hybridizations on the loss mechanisms and impedance matching conditions of metal sulfides based composites are revealed.Finally,the challenges and development prospects of metal sulfides based MA materials are presented.This review would provide a comprehensive understanding and insightful guidance for the exploration and development of efficient MA materials with thin thickness,light weight,wide absorption bandwidth,and strong absorption intensity. | Bin Li Fenglong Wang Kejun Wang Jing Qiao Dongmei Xu Yunfei Yang Xue Zhang Longfei Lyu Wei Liu Jiurong Liu | 2022 | Journal of Materials Science & Technology2022，，9： | 3 |
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