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Chemical Research in Chinese Universities 2009年第5期25卷 760-766页

作者： fu qi shi wen-fang Joint Laboratory of Polymer Thin Films and Solution Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China

An octa-functional acrylate of C-tetramethyl calix[4]resorcinarene（CMC-4-RA） was facilely synthesized and characterized with ^1H NMR, ^13C NMR and FTIR spectroscopy. The CMC-4-RA was added to a thiol-acrylate system with different mass ratios, and exposed to a middle pressure mercury lamp. The maximum photopolymerization rate and final vinyl group conversion in the cured film increased greatly along with CMC-4-RA addition that was monitored with Photo-DSC. The tensile strength and pendulum hardness were improved significantly after the addition of CMC-4-RA. With increasing the content of CMC-4-RA to 60%（mass fraction）, the glass transition temperature increased from 34.2 ℃ to 84.1 ℃; the cross-link density was calculated to be increased from 23.83 mmol/cm^3 to 82.40 mmol/cm^3 according to dynamic mechanical thermal analysis; the thermostability was greatly improved.

关键词： Calixresorcinarene Acrylate UV curing Film

Molecular phylogeny of Anopheles hyrcanus group(Diptera:Culicidae)based on mtDNA COI

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Infectious Diseases of Poverty 2017年第1期6卷 522-531页

作者： Yuan fang wen-qi shi Yi Zhang National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesMinistry of Science and TechnologyKey Laboratory of Parasite and Vector BiologyMinistry of HealthShanghai 200025China

Background:The Anopheles hyrcanus group,which includes at least 25 species,is widely distributed in the Oriental and Palearctic *** group members have been incriminated as vectors of malaria and other mosquito-borne *** is difficult to identify Hyrcanus Group members by morphological ***,molecular phylogeny has been proposed as an important complementary method to traditional morphological ***:Based on the GenBank database and our original study data,we used 466 mitochondrial DNA COI sequences belonging to 18 species to reconstruct the molecular phylogeny of the Hyrcanus Group across its worldwide geographic ***:The results are as follows.1)The average conspecific K2P divergence was 0.008(range 0.002-0.017),whereas sequence divergence between congroup species averaged 0.064(range 0.026-0.108).2)The topology of COI tree of the Hyrcanus Group was generally consistent with classical morphological taxonomy in terms of species classification,but disagreed in subgroup *** the COI tree,the group was divided into at least three main *** first cluster contained ***;the second was composed of the Nigerrimus Subgroup and ***;and the third cluster was comprised of the Lesteri Subgroup and other unassociated species.3)Phylogenetic analysis of COI indicated that ancient hybridizations probably occurred among the three closely related species,***,***,and ***.4)The results supported *** as a probable synonym of ***,and it was possible that *** and *** were the same species,as evident from their extremely low interspecific genetic divergence(0.020 and 0.007,respectively)and their phylogenetic ***:In summary,we reconstructed the molecular phylogeny and analysed genetic divergence of the Hyrcanus Group using mitochondrial COI *** results suggest that in the future of malaria surveillance,we should not only pay much attent

关键词： Mosquito DNA barcoding Genetic distance Malaria

The abundance of massive compact galaxies at 1.0

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Research in Astronomy and Astrophysics 2019年第10期19卷 109-120页

作者： shi-Ying Lu Yi-Zhou Gu Guan-wen fang qi-Rong Yuan Department of Physics and Institute of Theoretical Physics Nanjing Normal University Nanjing 210023 China Institute for Astronomy and History of Science and Technology Dali UniversityDali 671003 China

Based on a large sample of massive(M* 1010 M⊙) compact galaxies at 1.0 < z < 3.0 in five 3 D-HST/CANDELS fields, we quantify the fractional abundance and comoving number density of massive compact galaxies as a funct... 详细信息

Based on a large sample of massive(M* 1010 M⊙) compact galaxies at 1.0 function of redshift. The samples of compact quiescent galaxies(cQGs) and compact star-forming galaxies(cSFGs) are constructed by various selection criteria of compact galaxies in the literature, and the effect of compactness definition on abundance estimate has proven to be remarkable,particularly for the cQGs and cSFGs at high redshifts. Regardless of the compactness criteria adopted,their overall redshift evolutions of fractional abundance and number density are found to be rather *** samples of the cQGs exhibit a sustained increase in number density from z ~ 3 to 2 and a plateau at 1 shifts(z < 1) can be interpreted by the decrease of gas reservoirs in dark matter halos and the consequent low efficiency of gas-rich dissipation.

关键词： galaxies high-redshift-galaxies massive-compact-galaxies evolution-galaxies

Evaluation of the Sensitivity and Specificity of the New Clinical Diagnostic and Classification Criteria for Kashin-Beck Disease,an Endemic Osteoarthritis,in China

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Biomedical and Environmental Sciences 2017年第2期30卷 150-155页

作者： YU fang fang PING Zhi Guang YAO Chong WANG Zhi wen WANG fu qi GUO Xiong Institute of Endemic Diseases School of Public Health of Health Science CenterXi'an Jiaotong UniversityKey Laboratory of Trace Elements and Endemic DiseasesNational Health and Family Planning CommissionXi'an 710061ShaanxiChina Department of Health Statistics College of Public HealthZhengzhou UniversityZhengzhou 45001HenanChina The Centers for Disease Control of Linyou country Linyou 721500ShaanxiChina

This study aimed to evaluate the sensitivity and specificity of the new clinical diagnostic and classification criteria for Kashin-Beck disease （KBD） using six clinical markers： flexion of the distal part of fingers, deformed fingers, enlarged finger joints, shortened fingers, squat down, and dwarfism. One-third of the total population in Linyou County was sampled by stratified random sampling.

关键词： KBD in China Evaluation of the Sensitivity and Specificity of the New Clinical Diagnostic and Classification Criteria for Kashin-Beck Disease

Efficient and fair PPO-based integrated scheduling method for multiple tasks of SATech-01 satellite

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Chinese Journal of Aeronautics 2024年第2期37卷 417-430页

作者： qi shi Lu LI Ziruo fang Xingzi BI Huaqiu LIU Xiaofeng ZHANG wen CHEN Jinpei YU Shanghai Satellite Network Research Institute CO. LTDShanghai 201210China Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201306China University of Chinese Academy of Sciences Beijing 100039China

SATech-01 is an experimental satellite for space science exploration and on-orbit demonstration of advanced *** satellite is equipped with 16 experimental payloads and supports multiple working modes to meet the observation requirements of various *** to the limitation of platform power supply and data storage systems,proposing reasonable mission planning schemes to improve scientific revenue of the payloads becomes a critical *** this article,we formulate the integrated task scheduling of SATech-01 as a multi-objective optimization problem and propose a novel Fair Integrated Scheduling with Proximal Policy Optimization(FIS-PPO)algorithm to solve *** use multiple decision heads to generate decisions for each task and design the action mask to ensure the schedule meeting the platform *** results show that FIS-PPO could push the capability of the platform to the limit and improve the overall observation efficiency by 31.5%compared to rule-based plans currently ***,fairness is considered in the reward design and our method achieves much better performance in terms of equal task *** of its low computational complexity,our task scheduling algorithm has the potential to be directly deployed on board for real-time task scheduling in future space projects.

关键词： Satellite observatories SATech-01 Multi-modes platform Scheduling algorithms Reinforcement learning Proximal Policy Optimization(PPO)

Efficiently band-tailored type-Ⅲ van der Waals heterostructure for tunnel diodes and optoelectronic devices

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Nano Research 2022年第9期15卷 8442-8450页

作者： Xiangna Cong Yue Zheng fu Huang qi You Jian Tang Feier fang Ke Jiang Cheng Han Yumeng shi International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics&Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

Broken-gap(type-Ⅲ)two-dimensional(2D)van der Waals heterostructures(vdWHs)offer an ideal platform for interband tunneling devices due to their broken-gap band offset and sharp band ***,we demonstrate an efficient control of energy band alignment in a typical type-ⅢvdWH,which is composed of vertically-stacked molybdenum telluride(MoTe2)and tin diselenide(SnSe2),via both electrostatic and optical *** a single electrostatic gating with hexagonal boron nitride(hBN)as the dielectric,a variety of electrical transport characteristics including forward rectifying,Zener tunneling,and backward rectifying are realized on the same heterojunction at low gate voltages of±1 *** particular,the heterostructure can function as an Esaki tunnel diode with a room-temperature negative differential *** great tunability originates from the atomicallyflat and inert surface of h-BN that significantly suppresses the interfacial trap scattering and strain *** the illumination of an 885 nm laser,the band alignment of heterojunction can be further tuned to facilitate the direct tunneling of photogenerated charge carriers,which leads to a high photocurrent on/off ratio of>105 and a competitive photodetectivity of 1.03×1012 Jones at zero ***,the open-circuit voltage of irradiated heterojunction can be switched from positive to negative at opposite gate voltages,revealing a transition from accumulation mode to depletion *** findings not only promise a simple strategy to tailor the bands of type-ⅢvdWHs but also provide an in-depth understanding of interlayer tunneling for future low-power electronic and optoelectronic applications.

关键词： broken-gap(type-Ⅲ)heterostructure band tailoring single electrostatic gating infrared photodetector photovoltaic effects

Bismuth-based materials for rechargeable aqueous batteries and water desalination

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Rare Metals 2022年第1期41卷 287-303页

作者： Xiao-Jing Dai Xin-Xin Niu Wang-qin fu Dong Zheng wen-Xian Liu wen-Hui shi Jian-Wei Nai fang-fang Wu Xie-Hong Cao School of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014China Center for Membrane Separation and Water Science&Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014China

Aqueous batteries and seawater desalination have received considerable attention in recent years due to their merits as high safety,environmental friendliness and ***,the scarcity of highly match electrode materials hinders their *** exploration of high performance and low cost electrode materials is crucial for their potential ***(Bi),with high energy density and low redox potential,shows perspective in the field of aqueous batteries and seawater desalination,and significant progress has been achieved in the past *** this review,the unique properties and synthetic methods of Bi-based electrodes,as well as their applications are comprehensively summarized and *** commonly used preparation methods of Bibased electrodes,including hydrothermal method,electrodeposition method,etc.,are ***,the applications of the Bi-based composites in aqueous batteries,such as Ni//Bi batteries and water desalination,are ***,the challenges and future research direction of Bi-based materials are proposed.

关键词： Bismuth Aqueous batteries Desalination Capacitive deionization Derivatives

Spatial variability of soil properties in red soil and its implications for site-specific fertilizer management

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Journal of Integrative Agriculture 2020年第9期19卷 2313-2325页

作者： SONG fang-fang XU Ming-gang DUAN Ying-hua CAI Ze-jiang wen shi-lin CHEN Xian-ni shi Wei-qi Gilles COLINET National Engineering Laboratory for Improving Quality of Arable Land Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China Gembloux Agro-Bio Tech University of LiegeGembloux 5030Belgium South Subtropical Crop Research Institute Chinese Academy of Tropical Agricultural SciencesZhanjiang 524091P.R.China College of Agriculture Henan University of Science&TechnologyLuoyang 471003P.R.China

Assessing spatial variability and mapping of soil properties constitute important prerequisites for soil and crop management in agricultural areas. To explore the relationship between soil spatial variability and land management, 256 samples were randomly collected at two depths (surface layer 0–20 cm and subsurface layer 20–40 cm) under different land use types and soil parent materials in Yujiang County, Jiangxi Province, a red soil region of China. The pH, soil organic matter (SOM), total nitrogen (TN), cation exchange capacity (CEC), and base saturation (BS) of the soil samples were examined and mapped. The results indicated that soils in Yujiang were acidified, with an average pH of 4.87 (4.03–6.46) in the surface layer and 4.99 (4.03–6.24) in the subsurface layer. SOM and TN were significantly higher in the surface layer (27.6 and 1.50 g kg–1, respectively) than in the subsurface layer (12.1 and 0.70 g kg–1, respectively), while both CEC and BS were low (9.0 and 8.0 cmol kg–1, 29 and 38% for surface and subsurface layers, respectively). Paddy soil had higher pH (mean 4.99) than upland and forest soils, while soil derived from river alluvial deposits (RAD) had higher pH (mean 5.05) than the other three parent materials in both layers. Geostatistical analysis revealed that the best fit models were exponential for pH and TN, and spherical for BS in both layers, while spherical and Gaussian were the best fitted for SOM and CEC in the surface and subsurface layers. Spatial dependency varied from weak to strong for the different soil properties in both soil layers. The maps produced by selecting the best predictive variables showed that SOM, TN, and CEC had moderate levels in most parts of the study area. This study highlights the importance of site-specific agricultural management and suggests guidelines for appropriate land management decisions.

关键词： spatial variability soil pH CEC BS site-specific fertilizer management

Visible-light stimulated synaptic plasticity in amorphous indium−gallium−zinc oxide enabled by monocrystalline double perovskite for high-performance neuromorphic applications

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Nano Research 2023年第1期16卷 1304-1312页

作者： fu Huang Feier fang Yue Zheng qi You Henan Li Shaofan fang Xiangna Cong Ke Jiang Ye Wang Cheng Han Wei Chen Yumeng shi International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China College of Electronics and Information Engineering Shenzhen UniversityShenzhen 518060China Key Laboratory of Material Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China Department of Physics National University of SingaporeSingapore 117542Singapore Department of Chemistry National University of SingaporeSingapore 117543Singapore Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

Photoelectric synaptic devices have been considered as one of the key components in artificial neuromorphic systems due to their excellent capability to emulate the functions of visual neurons,such as light perception and image ***,we demonstrate an optically-stimulated artificial synapse with a clear photoresponse from ultraviolet to visible light,which is established on a novel heterostructure consisting of monocrystalline Cs2AgBiBr6 perovskite and indium–gallium–zinc oxide(IGZO)thin *** compared with pure IGZO,the heterostructure significantly enhances the photoresponse and corresponding synaptic plasticity of the devices,which originate from the superior visible absorption of single-crystal Cs2AgBiBr6 and effective interfacial charge transfer from Cs2AgBiBr6 to IGZO.A variety of synaptic behaviors are realized on the fabricated thin-film transistors,including excitatory postsynaptic current,paired pulse facilitation,short-term,and long-term ***,an artificial neural network is simulated based on the photonic potentiation and electrical depression effects of synaptic devices,and an accuracy rate up to 83.8%±1.2%for pattern recognition is *** finding promises a simple and efficient way to construct photoelectric synaptic devices with tunable spectrum for future neuromorphic applications.

关键词： artificial optoelectronic synapse monocrystalline Cs2AgBiBr6 thin-film transistors ultraviolet-to-visible neuromorphic computing

Tenofovir amibufenamide vs tenofovir alafenamide for treating chronic hepatitis B:A real-world study

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World Journal of Gastroenterology 2023年第44期29卷 5907-5918页

作者： wen-Ting Peng Chuan Jiang Fei-Lan Yang Nian-qi Zhou Ke-Yu Chen Jin-qing Liu shi-fang Peng Lei fu Department of Infectious Diseases Xiangya Hospital Central South UniversityChangsha 410008Hunan ProvinceChina

BACKGROUND The efficacy and safety profile of tenofovir amibufenamide(TMF)in chronic hepatitis B(CHB)patients is not *** To compare the efficacy and safety of TMF and tenofovir alafenamide(TAF)over a 48-wk period in patients with *** A total of 215 subjects meeting the inclusion criteria were enrolled and divided into two groups:TMF group(n=106)and the TAF group(n=109).The study included a comparison of virological response(VR):Undetectable hepatitis B virus DNA levels,alanine transaminase(ALT)normalization rates,renal function parameters,and blood lipid *** At 24 and 48 wk,VR rates for the TMF group were 53.57%and 78.57%,respectively,compared with 48.31%and 78.65%for the TAF group(P>0.05).The VR rates were also similar in both groups among patients with low-level viremia,both hepatitis B e antigen(HBeAg)-positive and HBeAg-negative *** TMF cohort showed ALT normalization and renal safety profiles similar to the TAF *** was a notable increase in total cholesterol levels in the TAF group(P=0.045),which was not observed in the TMF group(P>0.05).In patients with liver cirrhosis,both groups exhibited comparable VR and ALT normalization rates and renal safety ***,the fibrosis 4 score at 48 wk showed a significant reduction in the TAF group as compared to the TMF group within the liver cirrhosis *** Our study found TMF is as effective as TAF in treating CHB and has a comparable safety ***,TAF may be associated with worsening lipid profiles.

关键词： Alanine transaminase normalization Chronic hepatitis B Renal safety Virological response Blood lipid Tenofovir