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| 1 | Estimating significant wave height from SAR imagery based on an SVM regression model显示文摘A new method for estimating significant wave height(SWH) from advanced synthetic aperture radar(ASAR) wave mode data based on a support vector machine(SVM) regression model is presented. The model is established based on a nonlinear relationship between σ0, the variance of the normalized SAR image, SAR image spectrum spectral decomposition parameters and ocean wave SWH. The feature parameters of the SAR images are the input parameters of the SVM regression model, and the SWH provided by the European Centre for Medium-range Weather Forecasts(ECMWF) is the output parameter. On the basis of ASAR matching data set, a particle swarm optimization(PSO) algorithm is used to optimize the input kernel parameters of the SVM regression model and to establish the SVM model. The SWH estimation results yielded by this model are compared with the ECMWF reanalysis data and the buoy data. The RMSE values of the SWH are 0.34 and 0.48 m, and the correlation coefficient is 0.94 and 0.81, respectively. The results show that the SVM regression model is an effective method for estimating the SWH from the SAR data. The advantage of this model is that SAR data may serve as an independent data source for retrieving the SWH, which can avoid the complicated solution process associated with wave spectra. | GAO Dong LIU Yongxin MENG Junmin JIA Yongjun FAN Chenqing | 2018 | Acta Oceanologica Sinica2018，37，3： | 7 |
| 2 | Orbital angular momentum mode logical operation using optical diffractive neural network显示文摘Optical logical operations demonstrate the key role of optical digital computing,which can perform general-purpose calculations and possess fast processing speed,low crosstalk,and high throughput.The logic states usually refer to linear momentums that are distinguished by intensity distributions,which blur the discrimination boundary and limit its sustainable applications.Here,we introduce orbital angular momentum(OAM)mode logical operations performed by optical diffractive neural networks(ODNNs).Using the OAM mode as a logic state not only can improve the parallel processing ability but also enhance the logic distinction and robustness of logical gates owing to the mode infinity and orthogonality.ODNN combining scalar diffraction theory and deep learning technology is designed to independently manipulate the mode and spatial position of multiple OAM modes,which allows for complex multilight modulation functions to respond to logic inputs.We show that few-layer ODNNs successfully implement the logical operations of AND,OR,NOT,NAND,and NOR in simulations.The logic units of XNOR and XOR are obtained by cascading the basic logical gates of AND,OR,and NOT,which can further constitute logical half-adder gates.Our demonstrations may provide a new avenue for optical logical operations and are expected to promote the practical application of optical digital computing. | PEIPEI WANG WENJIE XIONG ZEBIN HUANG YANLIANG HE ZHIQIANG XIE JUNMIN LIU HUAPENG YE YING LI DIANYUAN FAN SHUQING CHEN | 2021 | Photonics Research2021，9，10： | 5 |
| 3 | Controllable photonic spin Hall effect with phase function construction显示文摘Photonic spin Hall efect(SHE)provides new opportunities for achieving spin-based photonics applications.However,flexibly manipulating the spin-dependent sltting(SDS)of photonic SHE and imposing extra phase modulation on the two spin components are always a challenge.Here,a controllable SHE mechanism based on phase function construction is reported.It is conduded that the phases with specific functional structures performing a coordinate translation are equivalent to integrating a gradient phase to the original phases.Hence,the original phase can be used for independent phase modulation,and the gradient phase originating from the co-ordinate translation is capable of manipulating the SDS.A metasurface with Pancharatnam-Berry phase that can impose conjugate phases to the two spin components of light is fabricated to verify this mechanism.By shifing the light position,the SDS is continuously manipulated in the visible region,which is successfully used for detecting the polarization llipticity.The extra phase modulation is also performed with the original phase and thus enables measuring singular beams.It is anticipated that the controllable SHE manipulation method may open new avenues in the fields of spin photonics,optical sensing,optical communications,etc. | YANLIANG HE ZHIQIANG XIE BO YANG XUEYU CHEN JUNMIN LIU HUAPENG YE XINXING ZHOU YING LI SHUQING CHEN DIANYUAN FAN | 2020 | Photonics Research2020，8，6： | 3 |
| 4 | Observation of internal waves with OLCI and SRAL on board Sentinel-3显示文摘The ocean and land color instrument(OLCI) and synthetic aperture radar altimeter(SRAL) installed aboard the Sentinel-3 satellite have been in orbit for operational uses. In this study, data collected from Sentinel-3 are used to investigate internal waves in the South China Sea. An internal wave is detected using an OLCI image with a resolution of 300 m, and an analysis was performed with a quasi-synchronous moderate-resolution imaging spectroradiometer(MODIS) image. The opposite characteristics of OLCI and MODIS images of the same internal wave are explained by the critical angle in brightness reversals. The unique observational geometry of the OLCI image and its influence on observations of internal waves are discussed. The distribution of σ0 and sea surface height anomalies(SSHAs) induced by internal waves are studied using SRAL records. The σ0 records of SRAL occasionally show less sensitivity to the modulation of internal waves, which may be attributed to the observational geometry, while SSHAs show obvious variations. The synchronous pairing of OLCI images and SRAL records are analyzed to extract the three-dimensional sea surface signatures induced by internal waves. The analysis demonstrates that the profile of SSHAs in the surface shows an opposite phase to the profiles of internal waves in the ocean. The opposite phase relationship, observed in the remote sensing view, is also confirmed with a laboratory experiment. | Xudong Zhang Jie Zhang Junmin Meng Chenqing Fan Jing Wang | 2020 | Acta Oceanologica Sinica2020，39，3： | 2 |
| 5 | Salivary microbiota may predict the presence of esophageal squamous cell carcinoma显示文摘The aim is to explore the predictive value of salivary bacteria for the presence of esophageal squamous cell carcinoma (ESCC). Saliva samples were obtained from 178 patients with ESCC and 101 healthy controls, and allocated to screening and verification cohorts, respectively. In the screening phase, after saliva DNA was extracted, 16S rRNA V4 regions of salivary bacteria were amplified by polymerase chain reaction (PCR) with high-throughput sequencing. Highly expressed target bacteria were screened by Operational Taxonomic Units clustering, species annotation and microbial diversity assessment. In the verification phase, the expression levels of target bacteria identified in the screening phase were verified by absolute quantitative PCR (Q-PCR). Receiver operating characteristic (ROC) curves were plotted to investigate the predictive value of target salivary bacteria. LEfSe analysis revealed higher proportions of Fusobacterium, Streptococcus and Porphyromonas, and Q-PCR assay showed significantly higher numbers of Streptococcus salivarius, Fusobacterium nucleatum and Porphyromonas gingivalis in patients with ESCC, when compared with healthy controls (all P < 0.05). The areas under the ROC curves for Streptococcus salivarius, Fusobacterium nucleatum, Porphyromonas gingivalis and the combination of the three bacteria for predicting patients with ESCC were 69%, 56.5%, 61.8% and 76.4%, respectively. The sensitivities corresponding to cutoff value were 69.3%, 22.7%, 35.2% and 86.4%, respectively, and the matched specificity were 78.4%, 96.1%, 90.2% and 58.8%, respectively. These highly expressed Streptococcus salivarius, Fusobacterium nucleatum and Porphyromonas gingivalis in the saliva, alone or in combination, indicate their predictive value for ESCC. | Junmin Wei Ruifeng Li Yanxian Lu Fan Meng Bohong Xian Xiaorong Lai Xiayi Lin Yu Deng Dongyang Yang Huabin Zhang Liangfang Li Xiaosong Ben Guibin Qiao Wanwei Liu Zijun Li | 2022 | Genes & Diseases2022，9，4： | 2 |
| 6 | Elimination of a Retrotransposon for Quenching Genome Instability in Modern Rice显示文摘Transposable elements(TEs)constitute the most abundant portions of plant genomes and can dramatically shape host genomes during plant evolution.They also play important roles in crop domestication.However,whether TEs themselves are also selected during crop domestication has remained unknown.Here,we identify an active long terminal repeat(LTR)retrotransposon,HUO,as a potential target of selection during rice domestication and breeding.HUO is a low-copy-number LTR retrotransposon,and is active under natural growth conditions and transmitted through male gametogenesis,preferentially inserting into genomic regions capable of transcription.HUO exists in all wild rice accessions and about half of the archaeological rice grains(1200–7000 years ago)and landraces surveyed,but is absent in almost all modern varieties,indicating its gradual elimination during rice domestication and breeding.Further analyses showed that HUO is subjected to strict gene silencing through the RNA-directed DNA methylation pathway.Our results also suggest that multiple HUO copies may trigger genomic instability through altering genome-wide DNA methylation and small RNA biogenesis and changing global gene expression,resulting in decreased disease resistance and yield,coinciding with its elimination during rice breeding.Together,our study suggests that negative selection of an active retrotransposon might be important for genome stability during crop domestication and breeding. | Yu Peng Yingying Zhang Yijie Gui Dong An Junzhong Liu Xun Xu Qun Li Junmin Wang Wen Wang Chunhai Shi Longjiang Fan Baorong Lu Yiwen Deng Sheng Teng Zuhua He | 2019 | Molecular Plant2019，12，10： | 2 |
| 7 | Assessing the genetic diversity of the critically endangered Chinese sturgeon Acipenser sinensis using mitochondrial markers and genome-wide single-nucleotide polymorphisms from RAD-seq显示文摘As a living fossil, the endangered Chinese sturgeon(Acipenser sinensis) has been considered a national treasure in China. Here,the famous Gezhouba Dam and Three Gorges Dam on the Yangtze River were built in 1988 and 2006, for economic purposes.The natural population of Chinese sturgeon has declined since then, as these dams block its migratory route to the original spawning grounds in the middle reaches of the Yangtze River. In 2013 and 2014, there was an absence of spawning where it typically happened near the Gezhouba Dam. Nevertheless, from April to June in 2015, over 1,000 larvae with different body lengths(10–35 cm) were detected along the Shanghai Yangtze Estuary; but only little is currently known about the population genetic structure of the Chinese sturgeon. Herein, we inferred population genetic parameters from 462 available Chinese sturgeon specimens based on a 421-bp fragment of the mitochondrial DNA(mtDNA) D-loop region and 1,481,620 SNPs(singlenucleotide polymorphisms) generated by restriction site-associated DNA sequencing(RAD-seq). For the D-loop dataset, 15 haplotypes were determined. Randomly picked 23 individuals, representing the 15 D-loop haplotype groups, were subsequently used for further RAD-seq validation. The average nucleotide diversity calculated from the mtDNA and RAD datasets was 0.0086 and 0.000478, respectively. The overall effective female population size was calculated to be 1,255 to 2,607, and the long-term effective population size was estimated to range from 11,950 to 119,500. We observed that the genetic variability and the effective female population size of the current population in the Yangtze River are severely low, which are similar to the data reported over 10 years ago. The deduced relatively small effective population of female fish, limiting the genetic connectivity among Chinese sturgeon, should be considered a serious threat to this endangered species. | Jian Liu Xinxin You Pao Xu Ping Zhuang Yueping Zheng Kai Zhang Min Wang Yunyun Lv Gangchun Xu Feng Zhao Jianhui Wu Houyong Fan Jianan Xu Zhiqiang Ruan Chao Bian Kai Liu Dongpo Xu Jinhui Chen Junmin Xu Qiong Shi | 2018 | Science China(Life Sciences)2018，61，9： | 2 |
| 8 | An all-organic aqueous potassium dual-ion battery显示文摘Benefiting from the environmental friendliness of organic electrodes and the high security of aqueous electrolyte,an all-organic aqueous potassium dual-ion full battery(APDIB) was assembled with 21 M potassium bis(fluoroslufonyl)imide(KFSI) water-in-salt as the electrolyte.The APDIB could deliver a reversible capacity of around 50 mAh g^(-1) at 200 mA g^(-1)(based on the weight of total active materials),a long cycle stability over 900 cycles at 500 mA g^(-1) and a high coulombic efficiency of 98.5%.The reaction mechanism of APDIB during the charge/discharge processes is verified:the FSI-could associate/disassociate with the nitrogen atom in the polytriphenylamine(PTPAn) cathode,while the K^(+) could react with C=O bonds in the 3,4,9,10-perylenetetracarboxylic diimide(PTCDI) anode reversibly.Our work contributes toward the understanding the nature of water-into-salt electrolyte and successfully constructed all-organic APDIB. | Junmin Ge Xianhui Yi Ling Fan Bingan Lu | 2021 | Journal of Energy Chemistry2021，30，6： | 2 |
| 9 | Structural elucidation of a neutral fucogalactan from the mycelium of coprinus comatus 显示文摘 | FAN Junmin ZHANG Jingsong TANG Qingjiu | 2006 | Carbohydr Res2006，341，9： | 1 |
| 10 | Structural elucidation of a neutral fucogaactan from themycelium of Coprinus comat us显示文摘 | JunMin Fan JingSongZhang | 2006 | Carbohydrate Researeh2006，341，： | 1 |
| 11 | Astragalus polysaccharide and oxymatrine can synergistically improve the immune efficacy of Newcastle disease vaccine in chicken显示文摘 | Yuku Chen Deyun Wang Yuanliang Hu Zhenhuan Guo Junmin Wang Xiaona Zhao Yunpeng Fan Liwei Guo Shujuan Yang Fuding Sai Yujuan Xing | 2010 | International Journal of Biological Macromolecules2010，，4： | 1 |
| 12 | Improvement of the thermal stability of LiMn 2 O 4 /graphite cells with methylene methanedisulfonate as electrolyte additive显示文摘 | Xiaoxi Zuo Junhua Wu Chengjie Fan Ke Lai Jiansheng Liu Junmin Nan | 2014 | Electrochimica Acta2014，，： | 1 |
| 13 | Effect of Low Temperature Treatment on Agrobacterium-mediated Transformation of Maize Seed Buds显示文摘[Objectives]This study was conducted to improve the genetic transformation rate of maize. [Methods]The seeds of maize ' Zheng 58' as the experimental material were germinated and treated under freezing temperature of-18 ℃ for 30 and 35 min. The EGFP gene was transformed into the growth points of these seed buds by Agrobacterium tumefaciens EHA105. The transformation effect was determined by fluorescence protein detection on transformed buds. [Results]After a certain period of treatment at-18 ℃ following germination and transformation of maize bud growth points with A. tumefaciens,although the survival rate of maize buds was reduced,the percentage of transformed cells significantly increased. [Conclusions]Low temperature treatment can improve the transformation efficiency of A. tumefaciens to the growth point of maize bud. | Mengyu LYU Fushuang DONG Junmin ZHANG He ZHAO Jianfang CHAI Shuo ZHOU Fan YANG Yongwei LIU Haibo WANG | 2018 | Agricultural Biotechnology2018，7，3： | 1 |
| 14 | An improved frequency shift method for ATI-SAR flat earth phase removal显示文摘An improved frequency shift method is proposed to remove the flat earth phase in ATI-SAR ocean surface motion detection in this study. First, two conventional flat earth effect removal methods(i.e., the frequency shift method and the orbital parameter method) are introduced and compared. Then, two improvements to frequency shift method are suggested. In the first improvement, the phase diagram is divided into several sub-blocks to calculate the phase fringe frequency. In the second improvement, a function between the phase of land regions and position is fitted to correct the residual flat earth phase based on the phase of the land regions that tend toward zero in an along-track interferogram. It is found that the improved frequency shift method is greatly improved;and it agrees well with the orbital parameter method, and achieves similar accuracy. | Yubin Zhang Jie Zhang Junmin Meng Chenqing Fan | 2019 | Acta Oceanologica Sinica2019，38，8： | 1 |
| 15 | Structural elucidation of a neutral fucogalactan from the mycelium of Coprinus comatus显示文摘 | Fan Junmin Zhang Jingsong Tang Qingjiu Liu Yanfang Zhang Anqiang Pan Yingjie | 2006 | Carbohydrate Research2006，341，9： | 1 |
| 16 | Structural elucidation of a neutral fucogaactan from the mycelium of Coprinus comatua显示文摘 | JunMin Fan JingSong Zhang etc | 2006 | Carbohydrate Besearch2006，341，9： | 1 |
| 17 | High-voltage performance of LiCoO 2 /graphite batteries with methylene methanedisulfonate as electrolyte additive显示文摘 | Xiaoxi Zuo Chengjie Fan Xin Xiao Jiansheng Liu Junmin Nan | 2012 | Journal of Power Sources2012，，： | 1 |
| 18 | Study on Optimization of Culture Conditions for Wild Isaria cicadae Miquel Liquid Strain显示文摘[Objectives] To study the effect of different culture conditions on the growth of wild I. cicadae Miq. liquid strain. [Methods]The I. cicadae Miq. strain was inoculated into the liquid culture medium with different carbon sources,nitrogen sources,micronutrients and p H,cultured in the constant temperature shaking incubator with rotating speed of 120 r/min at 19℃,and the mycelium pellet diameter,density and weight were compared between different treatments. [Results] The results showed that the optimum components of I. cicadae Miq.strain liquid included soluble starch,milk powder and vitamin B_(12),and the optimum p H was 5. 0-6. 0. [Conclusions] Soluble starch was the most suitable carbon source for the culture medium of I. cicadae Miq. liquid strain; milk powder was the most suitable nitrogen source for the culture medium of I. cicadae Miq. liquid strain; the most suitable p H was 5. 0-9. 0 for the mycelial growth of I. cicadae Miq.; the formula and mixture ratio of the optimum culture medium for the growth of liquid strain were determined. | Chunqin XIE Zheng CAO Junmin FAN Junqi XU Jun JIA | 2018 | Medicinal Plant2018，9，1： | 0 |
| 19 | Effects of Acetylacetone Solution Soaking on Agrobacterium - transformed Maize Seed Buds显示文摘[Objectives]The effect of acetosyringone seed soaking on the transformation of maize seed buds was analyzed,so as to improve the genetic transformation efficiency of maize and to provide technical support for transgenic breeding of maize.[Methods]The seeds of the'Zheng 58'maize inbred line were used as experimental materials.When the seeds were germinated,AS was added to the water at concentrations of 70,140,210,and 280μmol/L,respectively,and the seeds germinated without the addition of AS served as the CK.The Agrobacterium-mediated method was used to transform bud growth points of maize seeds,and green fluorescent protein detection was performed on the young shoots transformed with EGFP(enhanced green fluorescent protein)gene.The effect of soaking seeds with acetosyringone solution on the transformation of maize bud growth points by Agrobacterium was studied according to the detection results.[Results]Soaking seeds in acetosyringone solutions for germination had the effect of inhibiting the germination of maize seeds and inhibiting sprout elongation,and the higher the concentration of acetosyringone,the stronger the inhibition.When the concentration of acetosyringone solution was 280μmol/L,the germination rate of seeds was only 36.2%of the CK,while soaking seeds with 70-140μmol/L acetosyringone solution for germination could not only ensure a higher germination rate of maize seeds,but also significantly increased the transformation efficiency of maize bud growth points.When the seeds were soaked with 70μmol/L acetosyringone solution for germination,the positive rate of transformed maize buds was the highest,reaching 32.1%.[Conclusions]When maize bud growth points were used as the receptor of Agrobacterium transformation,soaking seeds with 70-140μmol/L acetosyringone for germination basically did not affect the germination of seeds,and was beneficial to the activation of Agrobacterium,thereby promoting the transformation. | Mengyu LYU Fushuang DONG Shuo ZHOU Jianfang CHAI He ZHAO Yongwei LIU Fan YANG Bo JIAO Xiaoyu LI Junmin ZHANG Haibo WANG | 2021 | Agricultural Biotechnology2021，10，3： | 0 |
| 20 | Shallow sea topography detection using fully Polarimetric Gaofen-3 SAR data based on swell patterns显示文摘Compared to single-polarization synthetic aperture radar(SAR)data,fully polarimetric SAR data can provide more detailed information of the sea surface,which is important for applications such as shallow sea topography detection.The Gaofen-3 satellite provides abundant polarimetric SAR data for ocean research.In this paper,a shallow sea topography detection method was proposed based on fully polarimetric Gaofen-3 SAR data.This method considers swell patterns and only requires SAR data and little prior knowledge of the water depth to detect shallow sea topography.Wave tracking was performed based on preprocessed fully polarimetric SAR data,and the water depth was then calculated considering the wave parameters and the linear dispersion relationships.In this paper,four study areas were selected for experiments,and the experimental results indicated that the polarimetric scattering parameterαhad higher detection accuracy than quad-polarization images.The mean relative errors were 14.52%,10.30%,12.56%,and 12.90%,respectively,in the four study areas.In addition,this paper also analyzed the detection ability of this model for different topographies,and the experiments revealed that the topography could be well recognized when the topography gradient is small,the topography gradient direction is close to the wave propagation direction,and the isobath line is regular. | Longyu Huang Chenqing Fan Junmin Meng Jungang Yang Jie Zhang | 2023 | Acta Oceanologica Sinica2023，42，2： | 0 |
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