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High-fluence relay-based disposable photoacoustic-ultrasonic endoscopy for in vivo anatomical imaging of gastrointestinal tract

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Photonics research 2023年第1期11卷 55-64页

作者： XUE WEN PENG LEI SHENGXIN HUANG XIAOYU chen YANCHI YUAN DI KE rUI LIU JIAXI LIANG ErQI WANG BO wei KEDI XIONG SIHUA YANG moe key laboratory of {3. life science&institute of {3. life science South China Normal UniversityGuangzhou 510631China Guangdong Provincial key laboratory of laser {3. science College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China institute of Biological and Medical Engineering Guangdong Academy of SciencesGuangzhou 510316China Department of Gastrointestinal Surgery Third Affiliated HospitalSun Yat-sen UniversityGuangzhou 510182China

Photoacoustic endomicroscopy combined with ultrasound(PAEM-US)has been a long-standing expectation for gastrointestinal tumor ***,we introduce a prototype disposable PAEM-US catheter and corresponding power interface unit,featuring catheter switchability,self-internal three-dimensional scanning,and system repeatability for gastrointestinal *** utilizing high-fluence relays,cascade insertion loss of the optical waveguide is minimized to 0.6 dB with a high performance of power resistance,and a focus-customizable acousto-optic coaxial probe is designed for high-sensitivity optical-resolution photoacoustic *** capability was demonstrated with in vivo anatomical imaging at 3. frames per *** results showed co-registered microscopic visualization of the microvascular and stratification of the rat colorectum with lateral resolution of 18μm and axial resolution of 63.m,holding great potential in the clinical detection of gastrointestinal diseases.

关键词： vivo utilizing insertion

Concentrations and seasonal dynamics of dissolved organic carbon in forest floors of two plantations （Castanopsis kawakamii and Cunninghamia lanceolata） in subtropical china

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Journal of Forestry research 2005年第3期16卷 205-208页

作者： ZHANG Jiang-shan GUO Jian-fen chen Guang-shui QIAN wei research institute of Environmental science Fujian Normal University Fuzhou 350007 P. R. China key laboratory of Snbtropical resources and Environments of Fujian Province Fuzhou 350007 P. R. China

The concentrations and seasonal dynamics of DOC in forest floors of monoculture plantations of Castanopsis kawakamii and Chinese fir （Cunninghamia lanceolata） were assessed in Sanming, Fujian, china （26°11′3.″N, 117°26′00″E）. Forest floor samples were taken in January, April, July and October in 2002 and divided into undecomposed material （horizon Oi）, partially decomposed organic material （horizon Oe）, and fully decomposed organic material （horizon Oa）. Upon collection. DOC concentrations of samples were analyzed by a High Temperature TOC. The results showed that the annual average DOC concentration of Chinese fir （13.1.7 mg·kg^-1） in the forest floor was higher than that of Castanopsis kawakamii （ 1178.9 mg·kg^-1）. Difference in DOC concentrations was observed among three horizons of the forest floor. DOC concentration of forest floor in the two forests was the highest in horizon Oe. Seasonal trends of DOC concentrations in different horizons of forest floors were similar and the maximal value occurred in autumn （or winter）. The concentration and temporal change of DOC in studied forests were probably related to the variation in moisture, temperature, biological activity and quantity of organic matter in the forest floor.

关键词： Dissolved organic carbon (DOC) Seasonal dynamics Forest floor Castanopsis kawakamii Cunninghamia lanceolata matter in the forest floor.

Soil microbial biomass and its controls

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Journal of Forestry research 2005年第4期16卷 327-330页

作者： ZHANG Jiang-shan GUO Jian-fen chen Guang-shui QIAN wei research institute of Environmental science Fujian Normal University Fuzhou 350007 P. R. China key laboratory of Subtropical resources and Environments of Fujian Province Fuzhou 350007 P. R. China

Microbial biomass represents a relatively small standing stock of nutrients, compared to soil organic matter, but it can act as a labile source of nutrients for plants, a pathway for incorporation of organic matter into the soil, and a temporary sink for nutrients. This review describes several factors controlling the dynamics of soil microbial biomass. These factors mainly include organic carbon and nitrogen limitation, residue and nutrient management, differences in plant species, soil texture, soil moisture and temperature. On the basis of detailed analysis, it is reasonable that future research would be focused on the impact of land use change on soil MB in tropical and subtropical ecosystems.

关键词： Microbial biomass Soil Influencing factors Organic carbon Organic nutrient review

Steerable merging bound states in the continuum on a quasi-flatband of photonic crystal slabs without breaking symmetry

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光子学研究:英文版 2023年第7期11卷 1262-1274页

作者： XIN QI JIAJU WU FENG WU MINA rEN QIAN wei YUFEI WANG HAITAO JIANG YUNHUI LI ZHIwei GUO YAPING YANG WANHUA ZHENG YONG SUN HONG chen moe key laboratory of Advanced Micro-structured Materials School of Physics Sciences and EngineeringTongji UniversityShanghai 200092China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China State key laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Department of Electrical Engineering Tongji UniversityShanghai 201804China

Optical resonators with high quality(Q)factors are paramount for the enhancement of light–matter interactions in engineered photonic structures,but their performance always suffers from the scattering loss caused by fabrication *** bound states in the continuum(BICs)provide us with a nontrivial physical mechanism to overcome this challenge,as they can significantly improve the Q factors of ***,most of the reported merging BICs are found atΓpoint(the center of the Brillouin zone),which intensively limits many potential applications based on angular *** date,studies on manipulating merging BICs at off-Γpoint are always accompanied by the breaking of structural symmetry that inevitably increases process difficulty and structural defects to a certain ***,we propose a scheme to construct merging BICs at almost an arbitrary point in momentum space without breaking *** by the topological features of BICs,we merge four accidental BICs with one symmetry-protected BIC at theΓpoint and merge two accidental BICs with opposite topological charges at the off-Γpoint only by changing the periodic constant of a photonic crystal ***,the position of off-Γmerging BICs can be flexibly tuned by the periodic constant and height of the structure ***,it is observed that the movement of BICs occurs in a quasi-flatband with ultra-narrow ***,merging BICs in a tiny band provide a mechanism to realize more robust ultrahigh-Q resonances that further improve the optical performance,which is limited by wide-angle ***,as an example of application,effective angle-insensitive second-harmonic generation assisted by different quasi-BICs is numerically *** findings demonstrate momentum-steerable merging BICs in a quasi-flatband,which may expand the application of BICs to the enhancement of frequency-sensitive light–matter interaction with angular selectivit

关键词： quasi symmetry breaking

Electro-optically tunable microdisk laser on Er^(3.)-doped lithium niobate thin film

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Chinese Optics Letters 2022年第1期20卷 60-63页

作者： Yiran Zhu Yuan Zhou Zhe Wang Zhiwei Fang Zhaoxiang Liu wei chen Min Wang Haisu Zhang Ya cheng The Extreme Optoelectromechanics laboratory(XXL) School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China State key laboratory of High Field laser Physics and CAS Center for Excellence in Ultra-intense laser science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Physical science and Technology ShanghaiTech UniversityShanghai 200031China State key laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Shanghai research Center for Quantum sciences Shanghai 201315China

We report an electro-optically(EO)tunable microdisk laser fabricated on the erbium(Er^(3.))-doped lithium niobate on insulator(LNOI) *** applying a variable voltage on a pair of integrated chromium(Cr) microelectrodes fabricated near the LNOI microdisk,electro-optic modulation with an effective resonance-frequency tuning rate of 2.6 GHz/100 V has been *** gives rise to a tuning range of 45 pm when the electric voltage is varied between-200 V and 200 V.

关键词： electro-optically tunable microlaser Er^(3.)doping lithium niobate microdisk

Comparative proteomics analysis of human gastric cancer

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World Journal of Gastroenterology 2008年第37期14卷 5657-5664页

作者： wei Li Jian-Fang Li Ying Qu Xue-Hua chen Jian-Min Qin Qin-Long Gu Min Yan Zheng-Gang Zhu Bing-Ya liu Shanghai key laboratory of Diagnosis and Treatment for GastrointestinalCancer Department of Surgery Shanghai Institute of DigestiveSurgery Ruijin Hospital Shanghai Jiao Tong University Schoolof Medicine Shanghai 200025 China

AIM: To isolate and identify differentially expressed proteins between cancer and normal tissues of gastric cancer by two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). METHODS: Soluble fraction proteins of gastric cancer tissues and paired normal tissues were separated by 2-DE. The differentially expressed proteins were selected and identified by MALDI-TOF-MS and database search. rESULTS: 2-DE profiles with high resolution and reproducibility were obtained. Twenty-three protein spots were excised from sliver staining gel and digested in gel by trypsin, in which fifteen protein spots were identified successfully. Among the identified proteins, there were ten over-expressed and five under-expressed proteins in stomach cancer tissues compared with normal tissues. CONCLUSION: In this study, the well-resolved, reproducible 2-DE patterns of human gastric cancer tissue and paired normal tissue were established and optimized and certain differentially-expressed proteins were identified. The combined use of 2-DE and MS provides an effective approach to screen for potential tumor markers.

关键词： Proteome Two-dimensional polyacrylamide gel electrophoresis Mass spectrometry Gastric cancer Tumor markers

Detection of DC electric forces with zeptonewton sensitivity by single-ion phonon laser

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science china(Physics,Mechanics & Astronomy) 2022年第11期65卷 107-114页

作者： Ya-Qi wei Ying-Zheng Wang Zhi-Chao Liu Tai-Hao Cui Liang chen Ji Li Shuang-Qin Dai Fei Zhou Mang Feng State key laboratory of Magnetic resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsInnovation Academy of Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan430071China university of the Chinese Academy of sciences Beijing100049China laboratory of Quantum science and Engineering South China University of TechnologyGuangzhou510641China research Center for Quantum Precision Measurement Guangzhou Institute of Industry TechnologyGuangzhou511458China School of Physics Zhengzhou UniversityZhengzhou450001China Department of Physics Zhejiang Normal UniversityJinhua321004China

Detecting extremely small forces helps exploring new physics *** we demonstrate that the phonon laser made of a single trapped ^(40)Ca^(+) ion behaves as an exquisite sensor for small force *** report our successful detection of small electric forces regarding the DC trapping potential with sensitivity of(2.41±0.49)zN/√Hz,with the ion only under Doppler cooling,based on the injection-locking of the oscillation phase of the phonon laser in addition to the classical squeezing applied to suppress the measurement *** anticipate that such a single-ion sensor would reach a much better force detection sensitivity in the future once the trapping system is further improved and the fluorescence collection efficiency is further enhanced.

关键词： single-ion sensor phonon laser super-sensitive detection injection locking classical squeezing

Determination of the number ofψ(3.86)events taken at BESⅢ

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Chinese Physics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai r.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-r.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko r.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang G.r.Che G.Chelkov C.chen C.H.chen Chao chen G.chen H.S.chen H.Y.chen M.L.chen S.J.chen S.L.chen S.M.chen T.chen X.r.chen X.T.chen Y.B.chen Y.Q.chen Z.J.chen Z.Y.chen S.K.Choi G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi r.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Y.Y.Duan Z.H.Duan P.Egorov Y.H.Fan J.Fang J.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang r.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao X.B.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia L.Ge P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo r.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han F.Hanisch X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.r.Hou Z.L.Hou B.Y.Hu H.M.Hu J.F.Hu S.L.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.Hölzken N.Hüsken N.in der Wiesche J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz r.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui N.Kumar A.Kupsc W.Kühn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei M.Lellmann T.Lenz C.Li C.Li C.H.Li cheng Li D.M.Li F.Li G.Li H.B.Li H.J.Li H.N.Li Hui Li J.r.Li J.S.Li Ke Li L.J.Li L.K.Li Lei Li M.H.Li P.r.Li Q.M.Li Q.X.Li r.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Z.Li Xi institute of High Energy Physics Beijing 100049China Beihang university Beijing 100191China Bochum ruhr-university D-44780BochumGermany Budker institute of Nuclear Physics SB rAS(BINP) Novosibirsk 630090Russia Carnegie Mellon university PittsburghPennsylvania 15213USA Central china normal university Wuhan 430079China Central South university Changsha 410083China china Center of Advanced science and Technology Beijing 100190China china university of Geosciences Wuhan 430074China Chung-Ang university Seoul06974Republic of Korea COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan university Shanghai 200433China GSI Helmholtzcentre for Heavy Ion research GmbH D-64291DarmstadtGermany Guangxi normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz institute Mainz Staudinger Weg 18D-55099MainzGermany Henan normal university Xinxiang 453007China Henan university Kaifeng 475004China Henan university of science and Technology Luoyang 471003China Henan university of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan normal university Changsha 410081China Hunan university Changsha 410082China Indian institute of Technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China institute of Modern Physics Lanzhou 730000China institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin university Changchun 130012China Joha

The number ofψ(3.86)events collected by the BESⅢdetector during the 2021 run period is determined to be(2259.3.11.1)×10~6 by counting inclusiveψ(3.86)hadronic *** uncertainty is systematic and the statistical uncertainty is ***,the numbers ofψ(3.86)events collected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(3.5.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3.86)events in the three data samples is(2712.4±14.3.×10~6.

关键词： ψ(3.86) inclusive process Hadronic events BESⅢdetector

An intravascular needle coated by ZnO nanoflowers for in vivo elimination of circulating tumor cells

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Nano research 2023年第1期16卷 873-881页

作者： Jinqi Li Xinlei Li Yangfeng Zhang Kun Jin Ye Yuan ruiqi Ming Yuhua Yang Tongsheng chen moe key laboratory of {3. life science&institute of {3. life science College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China Guangdong Provincial key laboratory of laser {3. science College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China SCNU Qingyuan institute of science and Technology Innovation Co. Ltd.South China Normal UniversityQingyuan 511500China guangzhou key laboratory of Spectral Analysis and Functional Probes College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China State key laboratory of Optoelectronic Materials and Technologies Nanotechnology Research CenterSchool of Materials Science&EngineeringSun Yat-sen UniversityGuangzhou 510275China

Circulating tumor cells(CTCs)are recognized as the main source of tumor recurrence and *** the CTCs in peripheral blood provides a new strategy to reduce the probability of recurrence or ***,we proposed a concept to eliminate CTCs by inserting a needle in the superficial blood *** the property of ZnO and the structure of nanoflowers,we designed a medical needle coated with ZnO nanoflowers(ZNFs),which killed about 90%of captured CTCs in vitro and prevented the injecting CTCs from spreading to lung tissue in BABL/c mouse *** in vitro and in vivo demonstrated that the CTCs not only were captured and killed,but also detached from the needle surface after dead,enabling the ZNFs needle continually eliminate ***,a theoretical model was presented to explain the penetration mechanism of cells by nanostructures,which indicated that nanoflowers structure can puncture CTCs more easily than vertical nanowire *** concept of inserting an intravascular needle provides a potential strategy to lower the concentration of CTCs in blood and reduce the probability of tumor recurrence or metastasis.

关键词： ZnO nanoflowers circulating tumor cells elimination cancer treatment theoretical model