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1A de novo Genome of a Chinese Radish Cultivar显示文摘Here, we report a high-quality draft genome of a Chinese radish(Raphanus sativus) cultivar. This draft contains 387.73 Mb of assembled scaffolds, 83.93% of the scaffolds were anchored onto nine pseudochromosomes and 95.09% of 43 240 protein-coding genes were functionally annotated. 184.75 Mb(47.65%) of repeat sequences was identified in the assembled genome. By comparative analyses of the radish genome against 10 other plant genomes, 2 275 genes in 780 gene families were found unique to R. sativus. This genome is a good reference for genomic study and of great value for genetic improvement of radish.ZHANG Xiaohui YUE Zhen MEI Shiyong QIU Yang YANG Xinhua CHEN Xiaohua CHENG Feng WU Zhangyan SUN Yuyan JING Yi LIU Bo SHEN Di WANG Haiping CUI Na DUAN Yundan WU Jian WANG Jinglei GAN Caixia WANG Jun WANG Xiaowu LI Xixiang 2015Horticultural Plant Journal2015,1,3:10
2Vegetable Genetic Resources in China显示文摘China is recognized as an important region for plant biodiversity based on its vast and historical collection of vegetable germplasm. The aim of this review is to describe the exploration status of vegetable genetic resources in China, including their collection, preservation, evaluation, and utilization. China has established a number of national-level vegetable genetic resources preservation units, including the National Mid-term Genebank for Vegetable Germplasm Resources, the National Germplasm Repository for Vegetatively-Propagated Vegetables, and the National Germplasm Repository for Aquatic Vegetables. In 2015, at least 36 000 accessions were collected and preserved in these units. In the past decade, 44 descriptors and data standards for different species have been published, and most accessions have been evaluated for screening the germplasms for specific important traits such as morphological characteristics, disease resistance, pest resistance, and stress tolerance.Moreover, the genetic diversity and evolution of some vegetable germplasms have been evaluated at the molecular level. Recently, more than 1 000 accessions were distributed to researchers and breeders each year by various means for vegetable research and production. However,additional wild-relative and abroad germplasms from other regions need to be collected and preserved in the units to expand genetic diversity.Furthermore, there is a need to utilize advanced techniques to better understand the background and genetic diversity of a wide range of vegetable genetic resources. This review will provide agricultural scientists' insights into the genetic diversity in China and provide information on the distribution and potential utilization of these valuable genetic resources.WANG Haiping LI Xixiang SONG Jiangping 2018Horticultural Plant Journal2018,4,2:10
3Terahertz spoof surface-plasmon-polariton subwavelength waveguide显示文摘Surface plasmon polaritons(SPPs) with the features of subwavelength confinement and strong enhancements have sparked enormous interest. However, in the terahertz regime, due to the perfect conductivities of most metals, it is hard to realize the strong confinement of SPPs, even though the propagation loss could be sufficiently low. One main approach to circumvent this problem is to exploit spoof SPPs, which are expected to exhibit useful subwavelength confinement and relative low propagation loss at terahertz frequencies. Here we report the design,fabrication, and characterization of terahertz spoof SPP waveguides based on corrugated metal surfaces. The various waveguide components, including a straight waveguide, an S-bend waveguide, a Y-splitter, and a directional coupler, were experimentally demonstrated using scanning near-field terahertz microscopy. The proposed waveguide indeed enables propagation, bending, splitting, and coupling of terahertz SPPs and thus paves a new way for the development of flexible and compact plasmonic circuits operating at terahertz frequencies.YING ZHANG YUEHONG XU CHUNXIU TIAN QUAN XU XUEQIAN ZHANG YANFENG LI XIXIANG ZHANG JIAGUANG HAN WEILI ZHANG 2018Photonics Research2018,9,1:9
4BRIF and CARIF progress显示文摘China Institute of Atomic Energy (CIAE) is currently constructing Beijing rare ion beam facility (BRIF) and is proposing China advanced rare ion beam facility (CARIF). This paper is aiming at introducing the progress of BRIF project and the con ceptual design CARIF. The ISOL type facility BRIF under construction is composed of a 100 MeV 300 ?A proton cyclotron, an ISOL with mass resolution of 20000, and a super-conducting LINAC of 2 MeV/q, and will be commissioned in 2013. CARIF facility proposed is planned to use both ISOL and PF techniques. It is based on a China advanced research reactor CARR that was critical, with ISOL separation of fission fragment, post acceleration to 150 MeV/u, and fragmentation of neu tron-rich fission fragment beam like 132Sn. Such unique combination will allow CARIF to deliver beam intensity better than the best world facilities by more than one order of magnitude.LIU WeiPing, LI ZhiHong, BAI XiXiang, WANG YouBao, GUO Bing, PENG ChaoHua, YANG Yi, SU Jun, CUI BaoQun, ZHOU ShuHua, ZHU ShengYun, XIA HaiHong, GUAN XiaLing, ZENG Sheng, ZHANG HuanQiao, CHEN YongShou, TANG HongQing, HUANG Li & FENG BeiYuan China Institute of Atomic Energy, P. O. Box 275(1), Beijing 102413, China 2011Science China(Physics,Mechanics & Astronomy)2011,54,S1:8
5Pathological and molecular examinations of postmortem testis biopsies reveal SARS-CoV-2 infection in the testis and spermatogenesis damage in COVID-19 patients显示文摘In late December 2019,the novel severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which causes coronavirus disease 2019(COVID-19),was identified in Wuhan,China,and the ensuing pandemic has led to more than 50 million infected individuals and more than one million deaths by November 10,2020(http://gffzze7c39cdc9e894ca6svbbquvkqqcxb6qkv.ffgz.tsg.suse.edu.cn/).Pathologic investigations of autopsy tissue have focused primarily on the lung,heart,and kidney,whereas morphologic data on testis injury and the effects of SARS-CoV-2 infection on spermatogenesis are limited.Although two groups did not detect SARS-CoV-2 in the semen or testes of recovered COVID-19 patients,1,2 another group confirmed SARS-CoV-2 in the semen of patients.3 Therefore,it is currently unknown whether SARS-CoV-2 infection impacts spermatogenesis and male fertility.In the present study,we evaluated the effects of SARS-CoV-2 infection on spermatogenesis by examining the pathophysiology and molecular features of testes obtained from five male COVID-19 patients at autopsy.Xixiang Ma Chuhuai Guan Rong Chen Yunyun Wang Shenglei Feng Rongshuai Wang Guoqiang Qu Sijia Zhao Fengli Wang Xiaoli Wang Dingyu Zhang Liang Liu Aihua Liao Shuiqiao Yuan 2021Cellular & Molecular Immunology2021,18,2:6
6Determination of the ^(12)C(p, γ)^(13)N reaction rates fromthe ^(12)C(~7Li,~6He)^(13)N reaction显示文摘The angular distribution of the 12C(7Li,6He)13N reaction at E(7Li) = 44.0 MeV was measured at the HI-13 tandem accelerator of Beijing, China. The asymptotic normalization coefficient (ANC) of 13N → 12C + p was derived to be (1.64 ± 0.11) fm-1/2 through the distorted wave Born approximation (DWBA) analysis. The ANC was then used to deduce the astrophysical S (E) factors and reaction rates for the 12C(p,γ)13N direct capture reaction at energies of astrophysical relevance.LI ZhiHong, SU Jun, GUO Bing, LI ZhiChang, BAI XiXiang, LIU JianCheng, LI YunJu, YAN ShengQuan, WANG BaoXiang, WANG YouBao, LIAN Gang, ZENG Sheng, LI ErTao, CHEN YongShou, SHU NengChuan, FAN QiWen & LIU WeiPing China Institute of Atomic Energy, Beijing 102413, China 2010Science China(Physics,Mechanics & Astronomy)2010,53,4:6
7Characterization of arsenate transformation and identification of arsenate reductase in a green alga Chlamydomonas reinhardtii显示文摘Arsenic (As) is a pervasive and ubiquitous environmental toxin that has created catastrophic human health problems world-wide. Chlamydomonas reinhardtii is a unicellular green alga, which exists ubiquitously in freshwater aquatic systems. Arsenic metabolism processes of this alga through arsenate reduction and sequent store and efflux were investigated. When supplied with 10 μmol/L arsenate, arsenic speciation analysis showed that arsenite concentration increased from 5.7 to 15.7 mg/kg dry weight during a 7-day period, accounting for 18%–24% of the total As in alga. When treated with different levels of arsenate (10, 20, 30, 40, 50 μmol/L) for 7 days, the arsenite concentration increased with increasing external arsenate concentrations, the proportion of arsenite was up to 23%–28% of the total As in alga. In efflux experiments, both arsenate and arsenite could be found in the efflux solutions. Additionally, the efflux of arsenate was more than that of arsenite. Furthermore, two arsenate reductase genes of C. reinhardtii (CrACR2s) were cloned and expressed in Escherichia coli strain WC3110 (?arsC) for the first time. The abilities of both CrACR2s genes to complement the arsenate- sensitive strain were examined. CrACR2.1 restored arsenate resistance at 0.8 mmol/L. However, CrACR2.2 showed much less ability to complement. The gene products were demonstrated to reduce arsenate to arsenite in vivo. In agreement with the complementation results, CrACR2.1 showed higher reduction ability than CrACR2.2, when treated with 0.4 mmol/L arsenate for 16 hr incubation.Xixiang Yin Lihong Wang Guilan Duan Guoxin Sun 2011Journal of Environmental Sciences2011,23,7:6
8Joint multiple parameters estimation for coherent chirp signals using vector sensor array显示文摘In this paper, an algorithm is proposed to estimate starting frequency (SF), chirp rate (CR), 2-D direction-of-arrivals (DOA) and polarization of coherent chirp signals with vector sensor arrays. The fractional Fourier transformation (FRFT) is used to estimate SF and CR of chirp signals in this method. And a new correlation matrix is reconstructed to suppress the noise. The property of the vector sensor array is employed to solve the problem of insufficient rank from signal coherence. The L-shaped uniform array of expend aperture is used to improve the precision of estimation, and the method of solving the ambiguity of angle under the condition of coherent signals is presented. The performance of this algorithm is compared with that of spatial smoothing method to verify the efficacy of this approach.WEN Zhong LI LiPing CHEN TianQi ZHANG XiXiang 2008Science in China(Series F)2008,51,1:4
9Traitor Tracing Using Identity Based Public-key Cryptography显示文摘LV Xixiang YANG Bo 2006Chinese Journal of Electronics2006,15,4:4
10Polarization-independent all-silicon dielectric metasurfaces in the terahertz regime显示文摘Dielectric metasurfaces have achieved great success in realizing high-efficiency wavefront control in the optical and infrared ranges. Here, we experimentally demonstrate several efficient, polarization-independent, all-silicon dielectric metasurfaces in the terahertz regime. The metasurfaces are composed of cylindrical silicon pillars on a silicon substrate, which can be easily fabricated using etching technology for semiconductors. By locally tailoring the diameter of the pillars, full control over abrupt phase changes can be achieved. To show the controlling ability of the metasurfaces, an anomalous deflector, three Bessel beam generators, and three vortex beam generators are fabricated and characterized. We also show that the proposed metasurfaces can be easily combined to form composite devices with extended functionalities. The proposed controlling method has promising applications in developing low-loss, ultra-compact spatial terahertz modulation devices.HUIFANG ZHANG XUEQIAN ZHANG QUAN XU QIU WANG YUEHONG XU MINGGUI WEI YANFENG LI JIANQIANG GU ZHEN TIAN CHUNMEI OUYANG XIXIANG ZHANG CONG HU JIAGUANG HAN WEILI ZHANG 2018Photonics Research2018,9,1:4
11The value of PIVKA-Ⅱversus AFP for the diagnosis and detection of postoperative changes in hepatocellular carcinoma显示文摘Objective:To explore the diagnostic value of abnormal prothrombinⅡ(PIVKA-Ⅱ)and alpha-fetoprotein(AFP)in primary hepatocellular carcinoma(HCC).Methods:From 20180.01 to 2020.01,there were 158 patients with primary liver cancer caused by chronic hepatitis B(male 116,women 42)and 62 patients with chronic hepatitis B(male 34,female 28).The levels of serum PIVKA-Ⅱand AFP were measured,and the results were statistically analyzed.Results:The value of PIVKA-Ⅱin liver cancer group was distinctly higher than that in chronic viral hepatitis B group,the difference is statistically significant(P<0.05).So does the value of AFP.Draw the subject working characteristic curve(ROC curve),the area under the curve of AFP and PIVKA-Ⅱis 0.799 and 0.836,and that of the combination of AFP and PIVKA-Ⅱis 0.854,the sensitivity is 57.6%,68.4%,72.2%,respectively,the specificity is93.5%,98.4%,96.8%,respectively.After operation or interventional therapy,the value of PIVKA-Ⅱin liver cancer group was clearly lower than that before treatment,and the difference was statistically significant.Conclusion:In the diagnostic value of primary liver cancer,PIVKA-Ⅱcombined with AFP is higher than PIVKA-Ⅱ,while AFP has the lowest benefit.We also find that PIVKA-Ⅱhas higher disease monitoring value than AFP.Qiuyan Lee Xixiang Yu Weiwei Yu 2021Journal of Interventional Medicine2021,4,2:4
12Wideband angle of arrival estimation of chirp signals using virtual Wignerville distribution显示文摘To estimate the angle of arrivals (AOA) of wideband chirp sources, a new time-frequency algorithm is proposed. In this method, virtual sensors are constructed based on the fact that the steering vectors of wideband chirp signals are linear and vary with time. And the randon Wignersville distribution (RWVD) of real sensors and virtual sensors are calculated to yield the new time-invariable steering vectors, furthermore, the noise and cross terms are suppressed. In addition, the multiple chirp signals are selected by their time-frequency points. The cost of computation is lower than the common AOA estimation methods of wideband sources due to nonrequirement of frequency focusing, interpolating and matrix decomposition, including subspace decomposition. Under the lower signal noise ratio (SNR) condition, the proposed method exhibits better precision than the method of frequency focusing (FF). The proposed method can be further applied to nonuniform linear array (NLA) since it is not confined to the array geometry. Simulation results illustrate the efficacy of the proposed method.Wen Zhong Li Liping Zhang Xixiang 2007Journal of Systems Engineering and Electronics2007,18,2:3
13Pan-genome of Raphanus highlights genetic variation and introgression among domesticated,wild,and weedy radishes显示文摘Post-polyploid diploidization associated with descending dysploidy and interspecific introgression drives plant genome evolution by unclear mechanisms.Raphanus is an economically and ecologically important Brassiceae genus and model system for studying post-polyploidization genome evolution and introgres-sion.Here,we report the de novo sequence assemblies for 11 genomes covering most of the typical sub-species and varieties of domesticated,wild and weedy radishes from East Asia,South Asia,Europe,and America.Divergence among the species,sub-species,and South/East Asian types coincided with Quaternary glaciations.A genus-level pan-genome was constructed with family-based,locus-based,and graph-based methods,and whole-genome comparisons revealed genetic variations ranging from single-nucleotide polymorphisms(SNPs)to inversions and translocations of whole ancestral karyotype(AK)blocks.Extensive gene flow occurred between wild,weedy,and domesticated radishes.High fre-quencies of genome reshuffling,biased retention,and large-fragment translocation have shaped the genomic diversity.Most variety-specific gene-rich blocks showed large structural variations.Extensive translocation and tandem duplication of dispensable genes were revealed in two large rearrangement-rich islands.Disease resistance genes mostly resided on specific and dispensable loci.Variations causing the loss of function of enzymes modulating gibberellin deactivation were identified and could play an important role in phenotype divergence and adaptive evolution.This study provides new insights into the genomic evolution underlying post-polyploid diploidization and lays the foundation for genetic improve-ment of radish crops,biological control of weeds,and protection of wild species'germplasms.Xiaohui Zhang Tongjin Liu Jinglei Wang Peng Wang Yang Qiu Wei Zhao Shuai Pang Xiaoman Li Haiping Wang Jiangping Song Wenlin Zhang Wenlong Yang Yuyan Sun Xixiang Li 2021Molecular Plant2021,14,12:3
14Diversity of Sex Types and Seasonal Sexual Plasticity in a Cucumber Germplasm Collection显示文摘The sex type of a cucumber plant is determined by the proportion of male, female and hermaphrodite flowers that it bears and is an important factor that affects fruit yield. In this paper, the sex types and seasonal sexual stabilities of 322 accessions of cucumber germplasm were identified. This germplasm collection displayed a great variety of sex types. We used an updated 10-type sex classification system based on the flower types present and the proportion of nodes with pistillate flowers(PNPF). The PNPF ranges of all the accessions were 2.12%–100% in spring and 0–100% in autumn. A total of 81.37% of the accessions had PNPFs of 10%–50% in spring, but most(84.78%) accessions were reduced to 0–20% PNPF in autumn. The range of reduction of PNPF from spring to autumn was 0–67.91%. In other words, most of the germplasm was normal monoecious(31.68%) or subandroecious(62.73%) in spring, but 94.10% of the accessions were subandroecious in autumn. According to the statistical evaluation of the difference in PNPFs between the two seasons, each accession could be classified into one of three groups: seasonally stable, seasonally sensitive and highly seasonally sensitive, accounting for 10.56%, 20.50% and 68.94% of the accessions, respectively. With a few exceptions, the seasonal PNPF differences were positively correlated with the PNPFs in a given season for most accessions. These results provided useful information and materials for sex expression mechanism research and for breeding cucumbers with high and stable yields.DOU Xinxin SHEN Di ZHANG Xiaohui CHENG Jiaqi LI Sigeng SONG Jiangping WANG Haiping ZHANG Wei LI Xixiang 2015Horticultural Plant Journal2015,1,2:3
15Develop a 3D neurological disease model of human cortical glutamatergic neurons using micropillar-based scaffolds显示文摘Establishing an effective three-dimensional(3D) in vitro culture system to better model human neurological diseases is desirable, since the human brain is a 3D structure. Here, we demonstrated the development of a polydimethylsiloxane(PDMS) pillar-based 3D scaffold that mimicked the 3D microenvironment of the brain. We utilized this scaffold for the growth of human cortical glutamatergic neurons that were differentiated from human pluripotent stem cells. In comparison with the 2D culture, we demonstrated that the developed 3D culture promoted the maturation of human cortical glutamatergic neurons by showing significantly more MAP2 and less Ki67 expression. Based on this 3D culture system,we further developed an in vitro disease-like model of traumatic brain injury(TBI), which showed a robust increase of glutamate-release from the neurons, in response to mechanical impacts, recapitulating the critical pathology of TBI. The increased glutamate-release from our 3D culture model was attenuated by the treatment of neural protective drugs, memantine or nimodipine. The established 3D in vitro human neural culture system and TBI-like model may be used to facilitate mechanistic studies and drug screening for neurotrauma or other neurological diseases.Cheng Chen Xin Dong Kai-Heng Fang Fang Yuan Yao Hu Min Xu Yu Huang Xixiang Zhang Danjun Fang Yan Liu 2019Acta Pharmaceutica Sinica B2019,9,3:3
16Development and Application of an Extraction and Quantitative HPLC Method for Sulforaphene in Radish显示文摘Sulforaphene, an isothiocyanate generated by the conversion of glucoraphenin in radish(Raphanus sativus L.), plays an important role in plants as a defensive compound and has been shown to have anti-cancer properties. However, a reliable method for the determination of sulforaphene in radish has not yet been established. In the present study, the enzymolysis conditions, extraction solvent and extraction conditions employed to obtain sulforaphene from radish were all optimized using single factor experiments and orthogonal testing. During these trials, sulforaphene was separated and quantified using reverse phase C18 high performance liquid chromatography(HPLC), employing methanol︰water(3︰7 ν/ν) as the mobile phase at a flow rate of 0.3 mL · min-1 together with a detection wavelength of 245 nm. Evaluation of this newly established method showed good linearity between the sulforaphene concentration and the characteristic peak area over the range of 5 to 200 μg· m L-1(R2 = 0.9996). This method was thus found to be precise. It was established that sulforaphene was extracted from radish with 95.48% efficiency(RSD = 0.94%) using the optimized conditions. This same technique was successfully applied to the quantification of sulforaphene in the fleshy roots of different radish germplasms as a means of selecting the germplasms with the highest sulforaphene levels.HUA Beibei WANG Haiping ZHAO Wen QIU Yang LIU Su LI Xixiang 2015Horticultural Plant Journal2015,1,2:2
17Error- and loss-tolerant bundle fragment authentication for space DTNs显示文摘Xixiang LV Hui LI 2014Frontiers of Computer Science2014,8,6:2
18Bacteroides ovatus-mediated CD27^(−)MAIT cell activation is associated with obesity-related T2D progression显示文摘Type 2 diabetes(T2D)is highly associated with obesity.However,the factors that drive the transition from excessive weight gain to glucose metabolism disruption are still uncertain and seem to revolve around systemic immune disorder.Mucosal-associated invariant T(MAIT)cells,which are innate-like T cells that recognize bacterial metabolites,have been reported to be altered in obese people and to lead to metabolic dysfunction during obesity.By studying the immunophenotypes of blood MAIT cells from a cross-sectional cohort of obese participants with/without T2D,we found an elevation in CD27^(-)negative(CD27−)MAIT cells producing a high level of IL-17 under T2D obese conditions,which could be positively correlated with impaired glucose metabolism in obese people.We further explored microbial translocation caused by gut barrier dysfunction in obese people as a triggering factor of MAIT cell abnormalities.Specifically,accumulation of the bacterial strain Bacteroides ovatus in the peripheral blood drove IL-17^(-)producing CD27−MAIT cell expansion and could be associated with T2D risk in obese individuals.Overall,these results suggest that an aberrant gut microbiota–immune axis in obese people may drive or exacerbate T2D.Importantly,CD27−MAIT cell subsets and Bacteroides ovatus could represent targets for novel interventional strategies.Our findings extend current knowledge regarding the clinical relevance of body mass index(BMI)-associated variation in circulating MAIT cells to reveal the role of these cells in obesity-related T2D progression and the underlying cellular mechanisms.Yue Li Yi Yang Jin Wang Peihong Cai Mei Li Xixiang Tang Ying Tan Yuchan Wang Fan Zhang Xiaofeng Wen Qiaoxing Liang Yuanpeng Nie Tufeng Chen Xiang Peng Xuemin He Yanhua Zhu Guojun Shi Wai WCheung Lai Wei Yanming Chen Yan Lu 2022Cellular & Molecular Immunology2022,19,7:2
19Identification and characterization of human neuronal voltage-gated calcium channel gamma 3 subunit gene显示文摘By homologous expressed sequence tag (EST) searching, one EST (GenBank: W29095) was obtained, which shows 75% identity in 435 bp overlap with the coding sequence of mouse Cacng2 gene. A 1 545 bp cDNA fragment was obtained from the nested polymerase chain reaction (PCR) and rapid applification of cDNA end (RACE) reaction in the human brain prefrontal cortex cDNA library and the human brain Ready cDNA with the primers designed on W29095. The fragment contained a 948-bp open reading frame (ORF) encoding 315 amino acids, and was named CACNG3. As it was identical to a BAC clone (GenBank: AC004125) from chromosome 16p12-p13.1, the CACNG3 gene was mapped to human chromosome 16p12-p13.1, and the coding region was composed of 4 exons. Reverse transcription PCR (RT-PCR) analysis showed that the CACNG3 gene expressed in human adult brain and fetal brain. Single strand comformation polymorphism (SSCP) analysis was performed in 3 pedigrees with autosomal recessive retinitis pigmentosa, 8 pedigrees with autosomalJiahui Xia Huali Zhang Dongsheng Tang Xixiang Tang Heping Dai Qian Pan Zhigao Long Xiaodong Liao 2000Chinese Science Bulletin2000,45,23:2
20Broadband terahertz rotator with an all-dielectric metasurface显示文摘Polarization manipulation is essential in developing cutting-edge photonic devices ranging from optical communication displays to solar energy harvesting. Most previous works for efficient polarization control cannot avoid utilizing metallic components that inevitably suffer from large ohmic loss and thus low operational efficiency.Replacing metallic components with Mie resonance-based dielectric resonators will largely suppress the ohmic loss toward high-efficiency metamaterial devices. Here, we propose an efficient approach for broadband, highquality polarization rotation operating in transmission mode with all-dielectric metamaterials in the terahertz regime. By separating the orthogonal polarization components in space, we obtain rotated output waves with a conversion efficiency of 67.5%. The proposed polarization manipulation strategy shows impressive robustness and flexibility in designing metadevices of both linear-and circular-polarization incidences.QUANLONG YANG XIEYU CHEN QUAN XU CHUNXIU TIAN YUEHONG XU LONGQING CONG XUEQIAN ZHANG YANFENG LI CAIHONG ZHANG XIXIANG ZHANG JIAGUANG HAN WEILI ZHANG 2018Photonics Research2018,,11:2
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