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| 1 | Single titanium-oxide species implanted in 2D g-CsN4 matrix as a highly efficient visible-light CO2 reduction photocatalyst显示文摘A visible-light-response, efficie nt and robust photo-catalyst for CO2 reduction is highly desirable. Herein, we demonstrate that single titanium-oxide species impla nted in two-dime nsion al (2D) graphitic carb on n itride (g-C3N4) matrix (2D TiO-CN) can efficie ntly photo-catalyze the reduction of CO2 to CO under the irradiation of visible light. The synergistic interaction between single titanium oxide species and g-C3N4 in 2D TiO-CN not only enhances the separation of photo-excited charges, but also results in visible light response of single titanium-oxide species, realizing high activity of CO2 photo-reduction with extremely high CO generation rate of 283.9 pmol·h^-1·g^-1, 5.7, 6.8 and 292.2 times larger than those of TQ2/CN hybrid material, CN and commercial TiO2, respectively. Time-resolved fluoresce nee and electron spin resonance spectroscopy revealed the catalytic mechanism of the fabricated 2D TiO-CN photocatalysts for CO2 reduction. | Shangfeng Tang Xuepeng Yin Guanyu Wang Xiuli Lu Tongbu Lu | 2019 | Nano Research2019，12，2： | 8 |
| 2 | Research on sea surface temperature retrieval by the one-dimensional synthetic aperture microwave radiometer, 1D-SAMR显示文摘Due to the low spatial resolution of sea surface temperature(T_S)retrieval by real aperture microwave radiometers,in this study,an iterative retrieval method that minimizes the differences between brightness temperature(T_B)measured and modeled was used to retrieve sea surface temperature with a one-dimensional synthetic aperture microwave radiometer,temporarily named 1 D-SAMR.Regarding the configuration of the radiometer,an angular resolution of 0.43°was reached by theoretical calculation.Experiments on sea surface temperature retrieval were carried out with ideal parameters;the results show that the main factors affecting the retrieval accuracy of sea surface temperature are the accuracy of radiometer calibration and the precision of auxiliary geophysical parameters.In the case of no auxiliary parameter errors,the greatest error in retrieved sea surface temperature is obtained at low T_S scene(i.e.,0.7106 K for the incidence angle of 35°under the radiometer calibration accuracy of0.5 K).While errors on auxiliary parameters are assumed to follow a Gaussian distribution,the greatest error on retrieved sea surface temperature was 1.3305 K at an incidence angle of 65°in poorly known sea surface wind speed(W)(the error on W of 1.0 m/s)over high W scene,for the radiometer calibration accuracy of 0.5 K. | Weihua Ai Mengyan Feng Guanyu Chen Wen Lu | 2020 | Acta Oceanologica Sinica2020，39，5： | 2 |
| 3 | A Precise Calibration Method on Phase Center of Uplink Antenna Array Considering Its Actual Pointing显示文摘With regard to the inferior techniques and low accuracy of phase center calibration of an antenna array, this paper proposes a new calibration method considering the actual antenna pointing by introducing a precise engineering surveying technique to measure the real state of antennas. First, an industrial photogrammetric system is utilized to obtain the coordinates of points on antenna panels in different postures, and the actual pointing of the mechanical axis is obtained via least-squares fitting. Then, based on this, the coordinates of antenna rotation center are obtained by seeking the intersection of mechanical axes via using the matrix method. Finally, the mechanical axis in arbitrary postures is estimated based on the inverse-angle weighting interpolation method, and the reliable phase center is obtained by moving a fixed length from the projective center along the mechanical axis. An uplink antenna array including three ? 3 m antennas is taken as experimental object, and all photogrammetric coordinate systems are unified by the engineering control network, with each antenna phase center precisely calibrated via the proposed method. The results of electrical signal synthesis indicate that this method can effectively overcome the influence of gravity deformation and mechanical installation error, and enhance the synthetic signal magnitude of the uplink antenna array. | Zongchun LI Zhiyong LU Guanyu ZHANG Bo LIU Qiqiang FENG Yinggang GUO Hua HE | 2020 | Journal of Geodesy and Geoinformation Science2020，3，1： | 2 |
| 4 | Sliding conjugate symmetric sequency-ordered complex Hadamard transform: fast algorithm and applications显示文摘 | Wu Jiasong Wang Lu Yang Guanyu | 2012 | IEEE Transactions on Circuits and Systems2012，59，6： | 1 |
| 5 | Novel Spectrum Sensing MethodBased on the SpatialSpectrum for Cognitive Radio Systems显示文摘 | Lu Guanyue Wang Yingxi Xie Kai Yang Xiaoni | | 0，，： | 1 |
| 6 | Solid Additive-Assisted Layer-by-Layer Processing for 19%Efficiency Binary Organic Solar Cells显示文摘Morphology is of great significance to the performance of organic solar cells(OSCs),since appropriate morphology could not only promote the exciton dissociation,but also reduce the charge recombination.In this work,we have developed a solid additive-assisted layer-by-layer(SAA-LBL)processing to fabricate high-efficiency OSCs.By adding the solid additive of fatty acid(FA)into polymer donor PM6 solution,controllable pre-phase separation forms between PM6 and FA.This intermixed morphology facilitates the diffusion of acceptor Y6 into the donor PM6 during the LBL processing,due to the good miscibility and fast-solvation of the FA with chloroform solution dripping.Interestingly,this results in the desired morphology with refined phase-separated domain and vertical phase-separation structure to better balance the charge transport/collection and exciton dissociation.Consequently,the binary single junction OSCs based on PM6:Y6 blend reach champion power conversion efficiency(PCE)of 18.16%with SAA-LBL processing,which can be generally applicable to diverse systems,e.g.,the PM6:L8-BO-based devices and thick-film devices.The efficacy of SAA-LBL is confirmed in binary OSCs based on PM6:L8-BO,where record PCEs of 19.02%and 16.44%are realized for devices with 100 and 250 nm active layers,respectively.The work provides a simple but effective way to control the morphology for high-efficiency OSCs and demonstrates the SAA-LBL processing a promising methodology for boosting the industrial manufacturing of OSCs. | Guanyu Ding Tianyi Chen Mengting Wang Xinxin Xia Chengliang He Xiangjun Zheng Yaokai Li Di Zhou Xinhui Lu Lijian Zuo Zhikang Xu Hongzheng Chen | 2023 | Nano-Micro Letters2023，15，7： | 1 |
| 7 | Heat exchange at air-sea interface in the South China Sea during monsoon periods in 1986显示文摘In order to explore the interaction be- tween the sea and monsoon in the South China Sea, the heat exchanges at air-sea interface during mon- soon periods in 1986 were calculated using observa- tional data. It shows that when the summer monsoon bursts and prevails over the South China Sea, the air-sea interface heat exchange is strong and the latent heat rises rapidly in the intertropical conver- gence zone and the tropic cyclone system near 20.49°N, 114.14°E. On May 24, 1986, the sensible heat became positive in the typhoon system. The heating exchange indicates that heat is transported from ocean to atmosphere, with major contribution of latent heat. When the summer monsoon prevails over the South China Sea and the weather is fine, even SST (sea surface temperature) is high, but sensible heat appears to be negative. The heat exchange indicates that heat is transported from atmosphere to ocean, with major contribution of short-wave radiation absorbed by sea surface and sensible heat. When summer monsoon is over and the northeast monsoon prevails over the South China Sea, the heat ex- change at air-sea interface is very strong. The heat- ing exchange shows that the ocean heats the at- mosphere, with major contribution of latent heat when cold air arrives at the sea surface and the sensible heat rises to positive rapidly. Therefore it can be concluded that the heat exchange at air-sea interface is different from the SST in South China Sea. Whenthe summer monsoon prevails over the South China Sea, the main trend is the ocean responding to the atmosphere. | WU Disheng FENG Weizhong XU Jianping YAN Jinghua ZHAO Xue ZHOU Shuihua ZHANG Jiwei QIAO Guanyu LIN Fu LU Boming | 2006 | Chinese Science Bulletin2006，51，19： | 0 |
| 8 | Identification and optimization of peptide inhibitors to block VISTA/PSGL-1 interaction for cancer immunotherapy显示文摘Developing new therapeutic agents for cancer immunotherapy is highly demanding due to the low response ratio of PD-1/PD-L1 blockade in cancer patients.Here,we discovered that the novel immune checkpoint VISTA is highly expressed on a variety of tumor-infiltrating immune cells,especially myeloid derived suppressor cells(MDSCs)and CD8^(+)T cells.Then,peptide C1 with binding affinity to VISTA was developed by phage displayed bio-panning technique,and its mutant peptide VS3 was obtained by molecular docking based mutation.Peptide VS3 could bind VISTA with high affinity and block its interaction with ligand PSGL-1 under acidic condition,and elicit anti-tumor activity in vivo.The peptide DVS3-Pal was further designed by D-amino acid substitution and fatty acid modification,which exhibited strong proteolytic stability and significant anti-tumor activity through enhancing CD8^(+)T cell function and decreasing MDSCs infiltration.This is the first study to develop peptides to block VISTA/PSGL-1 interaction,which could act as promising candidates for cancer immunotherapy. | Xiaoshuang Niu Menghan Wu Guodong Li Xiuman Zhou Wenpeng Cao Wenjie Zhai Aijun Wu Xiaowen Zhou Shengzhe Jin Guanyu Chen Yanying Li Jiangfeng Du Yahong Wu Lu Qiu Wenshan Zhao Yanfeng Gao | 2023 | Acta Pharmaceutica Sinica B2023，13，11： | 0 |
| 9 | Sea surface temperature retrieval based on simulated microwave polarimetric measurements of a one-dimensional synthetic aperture microwave radiometer显示文摘Compared with traditional real aperture microwave radiometers,one-dimensional synthetic aperture microwave radiometers have higher spatial resolution.In this paper,we proposed to retrieve sea surface temperature using a one-dimensional synthetic aperture microwave radiometer that operates at frequencies of 6.9 GHz,10.65 GHz,18.7 GHz and 23.8 GHz at multiple incidence angles.We used the ERA5 reanalysis data provided by the European Centre for Medium-Range Weather Forecasts and a radiation transmission forward model to calculate the model brightness temperature.The brightness temperature measured by the spaceborne one-dimensional synthetic aperture microwave radiometer was simulated by adding Gaussian noise to the model brightness temperature.Then,a backpropagation(BP)neural network algorithm,a random forest(RF)algorithm and two multiple linear regression algorithms(RE1 and RE2)were developed to retrieve sea surface temperature from the measured brightness temperature within the incidence angle range of 0°-65°.The results show that the retrieval errors of the four algorithms increase with the increasing Gaussian noise.The BP achieves the lowest retrieval errors at all incidence angles.The retrieval error of the RE1 and RE2 decrease first and then increase with the incidence angle and the retrieval error of the RF is contrary to that of RE1 and RE2. | Mengyan Feng Weihua Ai Wen Lu Chengju Shan Shuo Ma Guanyu Chen | 2021 | Acta Oceanologica Sinica2021，40，3： | 0 |
| 10 | Molecular mechanisms and the role of the protein kinase pathway in rat spatial memory impairment following isoflurane anesthesia显示文摘BACKGROUND: Animal experiments have demonstrated that isoflurane exposure alone induces learning and memory deficits for weeks or months. However, the molecular mechanisms of learning and memory remain poorly understood. Hippocampal expression of calcium/phospholipid- dependent protein kinase (PKC) and cAMP-dependent protein kinase (PKA) in rats have been shown to be associated with memory processing. OBJECTIVE: To investigate changes in rat spatial memory and hippocampal CA1 neuronal kinase system following isoflurane anesthesia, and to explore the correlation between molecular changes in cerebral neurons and behavioral manifestations following anesthesia. DESIGN, TIME AND SETTING: A randomized, controlled, animal study. All experiments were performed at the Department of Anesthesia, Beijing Chaoyang Hospital, Capital Medical University from November 2007 to December 2008. MATERIALS: A total of 72 male, 3 month-old (young group), Sprague Dawley rats, and 36 male, 20 month-old (aged group), Sprague-Dawley rats were used in the study. Isoflurane was purchased from Baxter, USA. METHODS: Young and aged rats were randomly assigned to control, training (no anesthesia, Morris water maze training), and isoflurane (1.2% isoflurane, Morris water maze training) groups. The isoflurane group was further subdivided into four groups, which were exposed to anesthesia for 2 or 4 hours, and were subjected to Morris water maze training at 2 days or 2 weeks post- anesthesia. Finally, each aged group comprised 6 rats, and the young group comprised 12 rats. MAIN OUTCOME MEASURES: Spatial learning and memory were observed during Morris water maze training. Hippocampal CA1 PKA and PKC expression and activity were detected by immunohistochemistry and enzyme-linked immunosorbent assay (ELISA). RESULTS: A 4-hour isoflurane exposure induced spatial memory deficits in all rats for 2 days to 2 weeks. In particular, aged rats exhibited more severe spatial memory deficits. Immunohistochemistry and ELISA results showed a significant increase in PKC and PKA expression and activity in the hippocampus CA1 subfield following Morris water maze training (P < 0.05). Moreover, isoflurane anesthesia inhibited PKC and PKA expression and activity, and this inhibition increased with increasing exposure duration and increasing age. CONCLUSION: Results suggested that increased isoflurane exposure and age could extensively inhibit the hippocampal CA1 kinase system. Inhibition of protein kinases could play an important role in the cognitive decline following anesthesia. | Qing Zhang Guanyu Lu Zhipeng Xu Chunsheng Feng Anshi Wu Yun Wang Hui Wang Yun Yue | 2010 | Neural Regeneration Research2010，5，7： | 0 |
| 11 | Insight into the efficiency-stability-cost balanced organic solar cell based on a polymerized nonfused-ring electron acceptor显示文摘Organic solar cells(OSCs)have attracted extensive attention from both academia and industry in recent years due to their remarkable improvement in power conversion efficiency(PCE).However,the Golden Triangle(the balance of efficiency-stability-cost)required for large-scale industrialization of OSCs still remains a great challenge.Here,a new nonfused-ring electron acceptor(NFREA)BF and its polymerized counterpart PBF were designed and synthesized,and their photovoltaic performance,storage stability and material cost were systematically investigated.When blended with a widely-used polymer donor PBDB-T,the PBFbased all-polymer solar cell(all-PSC)displayed a record high PCE of 12.61%for polymerized NFREAs(PNFREAs)with an excellent stability(95.2%of initial PCE after 800 h storage),superior to the BF counterpart.Impressively,PBF-based allPSC possesses the highest industrial figure-of-merit(i-FOM)value of 0.309 based on an efficiency-stability-cost evaluation,in comparison to several representative OSC systems(such as PM6:Y6 and PBDB-T:PZ1).This work provides an insight into the balance of efficiency,stability,and cost,and also indicates that the PNFREAs are promising materials toward the commercial application of OSCs. | Xiaobin Gu Yanan Wei Guanyu Lu Ziyang Han Di Zheng Guanghao Lu Jianqi Zhang Zhixiang Wei Yunhao Cai Xin Zhang Hui Huang | 2023 | Aggregate2023，4，6： | 0 |
| 12 | Clipping discrete multi-tone for peak-power-constraint IM/DD optical systems显示文摘High peak-to-average power ratio(PAPR)is a major drawback of discrete multi-tone(DMT)in peak-power-constraint(PPC)intensity-modulation/direct-detection(IM/DD)optical systems.Symmetric clipping operation is a frequently-used and practical method for mitigating the PAPR of the DMT signal.However,clipping noise is inevitably induced by the symmetric clipping operation,thereby deteriorating the system’s performance.In this paper,we study the statistical characteristics of the clipping noise in detail.Depending on the statistical characteristics,clipping-noise-cancellation(CNC)algorithms are proposed to mitigate the clipping noise in the clipping DMT systems.Theoretically,the clipping noise can be completely removed using the low-density-parity-check-assisted CNC algorithm(LDPC-assisted CNC algorithm).To verify the superiority of the clipping DMT with the CNC algorithm,we conduct an experiment with a50 Gb/s DMT system using 10G-class commercial devices for the scenario of PPC passive optical networks.The receiver sensitivity of the clipping DMT system with the CNC algorithm can reach-24 d Bm at a 20%soft-decision forward-error-correction limit,which is 2.5 d B higher than that of the DMT system without clipping operation.The clipping operation and the CNC algorithm are added after the original digital signal processing,thereby demonstrating the potential to efectively overcome the drawback in DMT signals and other high-PAPR signals. | Ji ZHOU Liangchuan LI Jiale HE Xiaofeng LU Yu BO Guanyu WANG Yuanda HUANG Gengchen LIU Yanzhao LU Shecheng GAO Yuanhua FENG Shancheng ZHAO Weiping LIU Changyuan YU Zhaohui LI | 2023 | Science China(Information Sciences)2023，66，5： | 0 |
| 13 | Aerosol transmission,an indispensable route of COVID-19 spread:case study of a department-store cluster显示文摘Patients with COVID-19 have revealed a massive outbreak around the world,leading to widespread concerns in global scope.Figuring out the transmission route of COVID-19 is necessary to control further spread.We analyzed the data of 43 patients in Baodi Department Store(China)to supplement the transmission route and epidemiological characteristics of COVID-19 in a cluster outbreak.Incubation median was estimated to endure 5.95 days(2-13 days).Almost 76.3%of patients sought medical attention immediately upon illness onset.The median period of illness onset to hospitalization and confirmation were 3.96 days(0-14)and 5.58 days(1-21),respectively.Patients with different cluster case could demonstrate unique epidemiological characteristics due to the particularity of outbreak sites.SRAS-CoV-2 can be released into the surrounding air through patient's respiratory tract activities,and can exist for a long time for long-distance transportation.SRAS-CoV-2 RNA can be detected in aerosol in different sites,including isolation ward,general ward,outdoor,toilet,hallway,and crowded public area.Environmental factors influencing were analyzed and indicated that the SARS-CoV-2 transportation in aerosol was dependent on temperature,air humidity,ventilation rate and inactivating chemicals(ozone)content.As for the infection route of case numbers 2 to 6,10,13,16,17,18,20 and 23,we believe that aerosol transmission played a significant role in analyzing their exposure history and environmental conditions in Baodi Department Store.Aerosol transmission could occur in some cluster cases when the environmental factors are suitable,and it is an indispensable route of COVID-19 spread. | Guanyu Jiang Can Wang Lu Song Xing Wang Yangyang Zhou Chunnan Fei He Liu | 2021 | Frontiers of Environmental Science & Engineering2021，15，3： | 0 |
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