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An iterative wavefront sensing algorithm for high-contrast imaging systems

Research in Astronomy and Astrophysics 2011年第2期11卷 198-204页

作者： Jiang-Pei Dou 1,2,De-Qing Ren 1,2,3 and Yong-Tian Zhu 1,2 1 National astronomical Observatories/nanjing institute of astronomical optics & technology,chinese academy of sciences,nanjing 210042,china 2 key laboratory of astronomical optics & technology,nanjing institute of astronomical optics & technology,chinese academy of sciences,nanjing 210042,china 3 Physics & Astronomy Department,California State University Northridge,18111 Nordhoff Street,Northridge,California 91330-8268,USA National astronomical Observatories / nanjing institute of astronomical optics & technology Chinese Academy of Sciences Nanjing 210042 China key laboratory of astronomical optics & technology Nanjing Institute of Astronomical Optics & Technology Chinese Academy of Sciences Nanjing 210042 China Physics & Astronomy Department California State University Northridge 18111 Nordhoff Street Northridge California 91330-8268 USA

Wavefront sensing from multiple focal plane images is a promising technique for high-contrast imaging ***,the wavefront error of an optics system can be properly reconstructed only when it is very *** paper presents an iterative optimization algorithm for the direct measurement of large static wavefront errors from only one focal plane *** first measure the intensity of the pupil image to get the pupil function of the system and acquire the aberrated image on the focal plane with a phase error that will be *** we induce a dynamic phase on the tested pupil function and calculate the associated intensity of the reconstructed image on the focal *** algorithm will then try to minimize the intensity difference between the reconstructed image and the aberrated test image in the focal plane,where the induced phase is a variable of the optimization *** simulation shows that the wavefront of an optical system can theoretically be reconstructed with high precision,which indicates that such an iterative algorithm may be an effective way to perform wavefront sensing for high-contrast imaging systems.

关键词： techniques: image processing -- methods: numerical -- planetarysystems

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Focal plane wave-front sensing algorithm for high-contrast imaging

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Science china(Physics,Mechanics & Astronomy) 2009年第8期52卷 1284-1288页

作者： DOU JiangPei1,2,3,REN DeQing1,2,4,ZHU YongTian1,2 & ZHANG Xi1,2,3 1 National astronomical Observatories/nanjing institute of astronomical optics & technology,chinese academy of sciences,nanjing 210042,china 2 key laboratory of astronomical optics & technology,nanjing institute of astronomical optics & technology,chinese academy of sciences,nanjing 210042,china 3 Graduate University of chinese academy of sciences,Beijing 100049,china 4 Physics & Astronomy Department,California State University Northridge,18111 Nordhoff Street,Northridge,California 91330-8268,USA National astronomical Observatories/nanjing institute of astronomical optics & technology Chinese Academy of Sciences Nanjing China key laboratory of astronomical optics & technology Nanjing Institute of Astronomical Optics & Technology Chinese Academy of Sciences Nanjing China Graduate University of chinese academy of sciences Beijing China Physics & Astronomy Department California State University Northridge Northridge USA

High-contrast imaging provided by a coronagraph is critical for the direction imaging of the Earth-like planet orbiting its bright parent star.A major limitation for such direct imaging is the speckle noise that is induced from the wave-front error of an optical *** derive an algorithm for the wave-front measurement directly from 3 focal plane *** 3 images are achieved through a deformable mirror to provide specific phases for the optics *** introduce an extra amplitude modulation on one deformable mirror configuration to create an uncorrelated wave-front,which is a critical procedure for wave-front *** simulation shows that the reconstructed wave-front is consistent with the original wave-front theoretically,which indicates that such an algorithm is a promising technique for the wave-front measurement for the high-contrast imaging.

关键词： high-contrast imaging multi-image algorithm speckle nulling technique wave-front sensing

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An experimental indoor phasing system based on active optics using dispersed Hartmann sensing technology in the visible waveband

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Research in Astronomy and Astrophysics 2011年第9期11卷 1111-1122页

作者： Yong Zhang Gen-Rong Liu Yue-Fei Wang Ye-Ping Li Ya-Jun Zhang Liang Zhang Yi-Zhong Zeng Jie Zhang National astronomical Observatories / nanjing institute of astronomical optics ＆ technology Chinese Academy of Sciences Nanjing 210042 China key laboratory of astronomical optics ＆ technology Nanjing Institute of Astronomical Optics ＆ Technology Chinese Academy of Sciences Nanjing 210042 China Graduate University of chinese academy of sciences Beijing 100049 China

A telescope with a larger primary mirror can collect much more light and resolve objects much better than one with a smaller mirror, and so the larger version is always pursued by astronomers and astronomical technicians. Instead of using a monolithic primary mirror, more and more large telescopes, which are currently being planned or in construction, have adopted a segmented primary mirror design. Therefore, how to sense and phase such a primary mirror is a key issue for the future of extremely large optical/infrared telescopes. The Dispersed Fringe Sensor （DFS）, or Dispersed Hartmann Sensor （DHS）, is a non-contact method using broadband point light sources and it can estimate the piston by the two-directional spectrum formed by the transmissive grating＇s dispersion and lenslet array. Thus it can implement the combination of co-focusing by Shack-Hartmann technology and phasing by dispersed fringe sensing technologies such as the template-mapping method and the Hartmann method. We introduce the successful design, construction and alignment of our dis- persed Hartmann sensor together with its design principles and simulations. We also conduct many successful real phasing tests and phasing corrections in the visible waveband using our existing indoor segmented mirror optics platform. Finally, some conclusions are reached based on the test and correction of experimental results.

关键词： astronomical instrumentation -- methods and techniques -- instrumen- tation: active optics -- adaptive optics

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Panel positioning error and support mechanism for a 30-m THz radio telescope

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Research in Astronomy and Astrophysics 2011年第6期11卷 725-736页

作者： De-Hua Yang Daniel Okoh Guo-Hua Zhou Ai-Hua Li Guo-Ping Jing-Quan Cheng National astronomical Observatories /nanjing institute of astronomical optics ＆ technology Chinese Academy of SciencesNanjing 210042China key laboratory of astronomical optics ＆ technology Nanjing Institute of Astronomical Optics ＆ TechnologyChinese Academy of SciencesNanjing 210042China Centre for Basic Space Science National Space Research and Development AgencyUniversity of NigeriaNsukka 410002Nigeria National Radio Astronomy Observatory CharlottesvilleVA 22903USA

A 30-m TeraHertz（THz） radio telescope is proposed to operate at 200 μm with an active primary *** paper presents sensitivity analysis of active surface panel positioning errors with optical performance in terms of the Strehl *** on Ruze＇s surface error theory and using a Monte Carlo simulation,the effects of six rigid panel positioning errors,such as piston,tip,tilt,radial,azimuthal and twist displacements,were directly *** optical performance of the telescope was then evaluated using the standard Strehl *** graphically illustrated the various panel error effects by presenting simulations of complete ensembles of full reflector surface errors for the six different rigid panel positioning *** of the panel error sensitivity analysis revealed that the piston error and tilt/tip errors are dominant while the other rigid errors are much less ***,as indicated by the results,we conceived of an alternative Master-Slave Concept-based（MSC-based） active surface by implementating a special Series-Parallel Concept-based（SPC-based） hexapod as the active panel support mechanism.A new 30-m active reflector based on the two concepts was demonstrated to achieve correction for all the six rigid panel positioning errors in an economically feasible way.

关键词： telescopes-methods:data analysis-methods:statistical-techniques:miscellaneous

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Calculations for the Pre-Calibration of LAMOST Active optics

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chinese Journal of Astronomy and Astrophysics 2005年第3期5卷 302-314页

作者： Yong Zhang and Xiang-Qun Cui National astronomical Observatories / nanjing institute of astronomical optics & technology, chinese academy of sciences, nanjing 210042 Graduate School of the chinese academy of sciences, Beijing 100039 National astronomical Observatories / nanjing institute of astronomical optics & technology Chinese Academy of Sciences Nanjing 210042 Graduate School of the chinese academy of sciences Beijing 100039

Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) is one of the major on-going national large scientific projects in china. Active optics is a key technology for the LAMOST with which the thin-mirror active optics and segmented-mirror active optics are tied in. A pre-calibration method considering all active forces and displacements specially for LAMOST has been developed in early 2004. We give a detailed mathematical derivation and calculation including numerical simulation and computer program realization of the pre-calibration method of LAMOST open-loop control for the third-order aspherical aberration. We have also carried out calculations on the application of the pre-calibration method and the parameters of actuator design in LAMOST active optics in observation mode, including estimations of the actuator ranges, the interval of active optics correction and the ranges and trends of load changes on all the actuators during LAMOST tracking a given star.

关键词： active optics telescopes instrumentation

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调控动态生长过程以构筑嵌段可换和光谱可调的有机异质结构（英文）

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Science china Materials 2024年

作者：赵帅许超飞余悦夏星宇王磊王雪东廖良生 1.Jiangsu key laboratory for Carbon-Based Functional Materials & Devices, institute of Functional Nano & Soft Materials (FUNSOM), Soochow University 2.Macao institute of Materials Science and Engineering, Macau University of Science and technology Jiangsu key laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Macao institute of Materials Science and Engineering Macau University of Science and Technology

与单一结构相比,有机嵌段异质结构具有特殊的光电性能.然而,有机分子间的相互作用主导了异质结构构建单元的生长顺序,如有机单元A、B会自发形成BAB型结构而不是相反的ABA型结构,不能可控生长.在此,我们提出了次序结晶工程,结合晶种逐步...

与单一结构相比,有机嵌段异质结构具有特殊的光电性能.然而,有机分子间的相互作用主导了异质结构构建单元的生长顺序,如有机单元A、B会自发形成BAB型结构而不是相反的ABA型结构,不能可控生长.在此,我们提出了次序结晶工程,结合晶种逐步自组装,控制共晶R与共晶N在彼此的两端纵向外延生长,从而精确合成具有可逆嵌段构型的有机嵌段异质结构:RNR和NRN. RNR有机嵌段异质结构,由于其逐渐掺杂的异质结而表现出渐变色的发射和波导特性,而NRN有机嵌段异质结构由于其明显的构筑异质结界限而表现出纯双色发射和波导特性.本工作实现了有机嵌段异质结构中嵌段块的有序可控生长,为未来光子学发展提供了制备合理复杂有机嵌段异质结构的途径.

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Expert consensus on radiotherapy combined with immunotherapy for esophageal cancer(2024 edition)

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Radiation Medicine and Protection 2024年第2期5卷 59-67页

作者： Professional Committee of Radiation Oncology china Anti-Cancer Association Branch ofRadiation Oncology chinese Medical Association Branch of Radiation Oncology TreatmentPhysician chinese Medical Doctor Association Qingsong Pang Jun Wang Zhouguang Hui 不详 Tianjin Medical University Cancer institute&Hospital Tianjin 300060China the Fourth Hospital of Hebei Medical University Shijiazhuang 050011China National Cancer Center National Clinical Research Center for CancerCancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China.

Radiotherapy represents an essential treatment approach for esophageal *** recent years,immunotherapy combined with chemotherapy has become the first-line standard treatment for patients with advanced esophageal *** phase III studies on immunotherapy combined with radiotherapy for locally advanced esophageal cancer are currently *** evidence-based medical data are urgently needed to support the integration of immunotherapy and chemoradiotherapy as a new treatment strategy for patients with locally advanced esophageal *** consensus,formulated based on the latest study results,in-depth research,and thorough discussions,provides a comprehensive set of *** document extensively covers treatment strategies and evaluation methods for radiotherapy combined with immunotherapy across patients with operable esophageal cancer,inoperable locally advanced esophageal cancer,and advanced esophageal ***,common complications and radiation-related issues associated with radiotherapy combined with immunotherapy are discussed,serving as clinical *** expert group comprised members from the Professional Committee of Radiation Oncology,china Anti-Cancer Association,the Branch of Radiation Oncology,chinese Medical Association,and the Branch of Radiation Oncology Treatment Physician,chinese Medical Doctor Association.

关键词： Esophageal squamous cell carcinoma Esophageal adenocarcinoma Immunotherapy Chemoradiotherapy Radiotherapy Expert consensus

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A neotype for Colpodexylon gracilentum Dou (Lycopsida) from the Middle Devonian of North Xinjiang,china

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Journal of Systematics and Evolution 2011年第4期49卷 372-378页

作者： Hong-He XU Yi WANG (State key laboratory of Palaeobiology and Stratigraphy,nanjing institute of Geology and Palaeontology,chinese academy of sciences,nanjing 210008,china) (State key laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China)

According to newly collected and well preserved specimens,herbaceous lycopsids Colpodexylon gracilentum Dou and Colpodexylon laminatum Dou from the late Middle Devonian of Xinjiang,NW china are reduced to ***,for which a neotype is designated and emended diagnosis is *** gracilentum has leaves with three nearly equal segments,an elliptical sporangium adaxially attached by a pad on the isomorphic sporophyll.

关键词： Colpodexylon Devonian lycopsid neotype Xinjiang.

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chinese national clinical practice guidelines on the prevention,diagnosis,and treatment of early gastric cancer

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chinese Medical Journal 2024年第8期137卷 887-908页

作者： Peng Li Ziyu Li Enqiang Linghu Jiafu Ji Society of Digestive Endoscopy of the chinese Medical Association Colorectal Surgery Group of the chinese Medical Association chinese Association of Gastroenterologists&Hepatologists National Clinical Research Center for Digestive Diseases chinese Medical Journal Clinical Practice Guideline Collaborative Department of Gastroenterology Beijing Friendship HospitalCapital Medical UniversityNational Clinical Research Center for Digestive DiseaseBeijing 100050China Department of Gastrointestinal Surgery Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education)Peking University Cancer Hospital and InstituteBeijing 100142China Department of Gastroenterology and Hepatology the First Medical CenterChinese People’s Liberation Army General HospitalBeijing 100853China 不详

Background:Gastric cancer is one of the most common malignant tumors in the digestive system in *** comprehensive practice guidelines for early gastric cancer in china are currently ***,we created the chinese national clinical practice guideline for the prevention,diagnosis,and treatment of early gastric ***:This clinical practice guideline(CPG)was developed in accordance with the World Health Organization’s recommended process and with the Grading of Recommendations Assessment,Development,and Evaluation(GRADE)in assessing evidence *** used the Evidence to Decision framework to formulate clinical recommendations to minimize bias and increase transparency in the CPG development *** used the Reporting Items for practice Guidelines in HealThcare(RIGHT)statement and the Appraisal of Guidelines for Research and Evaluation II(AGREE II)as reporting and conduct guidelines to ensure completeness and transparency of the ***:This CPG contains 40 recommendations regarding the prevention,screening,diagnosis,treatment,and follow-up of early gastric cancer based on available clinical studies and *** provide recommendations for the timing of Helicobacter pylori eradication,screening populations for early gastric cancer,indications for endoscopic resection and surgical gastrectomy,follow-up interval after treatment,and other ***:This CPG can lead to optimum care for patients and populations by providing up-to-date medical *** intend this CPG for widespread adoption to increase the standard of prevention,screening,diagnosis,treatment,and follow-up of early gastric cancer;thereby,contributing to improving national health care and patient quality of life.

关键词： Early gastric cancer Prevention Screening Diagnosis Treatment Follow-up

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Evidence-based expert consensus on clinical management of safety of Bruton’s tyrosine kinase inhibitors(2024)

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chinese Journal of Cancer Research 2024年第3期36卷 240-256页

作者： Zaiwei Song Dan Jiang Lingling Yu Yixuan Chen Daobin Zhou Yue Li Depei Wu Lingli Zhang Liyan Miao Jun Ma Jun Zhu Hongmei Jing Rongsheng Zhao the Steering Committee,the Consensus Panel and the Evidence Synthesis Group Evidence-based Pharmacy Professional Committee of chinese Pharmaceutical Association(CPA) Hospital Pharmacy Professional Committee of chinese Pharmaceutical Association(CPA) Division of Therapeutic Drug Monitoring of chinese Pharmacological Society(CPS) Expert Committee on Lymphoma of chinese Society of Clinical Oncology(CSCO) Expert Committee on Leukemia of chinese Society of Clinical Oncology(CSCO) Society of Integrative Cardio-Oncology of china Anti-Cancer Association(CACA) chinese Society of Hematology of chinese Medical Association(CMA) Hospital Pharmacy Professional Committee of Cross-Straits Medicine Exchange Association(SMEA) Department of Pharmacy Peking University Third HospitalBeijing 100191China institute for Drug Evaluation Peking University Health Science CenterBeijing 100191China Therapeutic Drug Monitoring and Clinical Toxicology Center Peking UniversityBeijing 100191China Department of Pharmacy Administration and Clinical Pharmacy School of Pharmaceutical SciencesPeking UniversityBeijing 100191China Department of Hematology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100005China Department of Cardiology the First Affiliated HospitalHarbin Medical UniversityHarbin 150001China Department of Hematology the First Affiliated Hospital of Soochow UniversitySuzhou 215006China Department of Pharmacy Evidence-based Pharmacy CenterWest China Second HospitalSichuan UniversityChengdu 610041China Department of Pharmacy the First Affiliated Hospital of Soochow UniversitySuzhou 215006China Department of Hematology and Oncology Harbin Institute of Hematology and OncologyHarbin 150010China key laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Department of LymphomaPeking University Cancer Hospital&InstituteBeijing 100142China Department of Hematology Peking University Third HospitalBeijing 100191China 不详

Bruton’s tyrosine kinase inhibitors(BTKis)have revolutionized the treatment of B-cell ***,safety issues related to the use of BTKis may hinder treatment continuity and further affect clinical efficacy.A comprehensive and systematic expert consensus from a pharmacological perspective is lacking for safety issues associated with BTKi treatment.A multidisciplinary consensus working group was established,comprising 35 members from the fields of hematology,cardiovascular disease,cardio-oncology,clinical pharmacy,and evidencebased *** evidence-based expert consensus was formulated using an evidence-based approach and the Delphi *** Joanna Briggs institute Critical Appraisal(JBI)tool and Grading of Recommendations Assessment,Development,and Evaluation(GRADE)approach were used to rate the quality of evidence and grade the strength of recommendations,*** consensus provides practical recommendations for BTKis medication based on nine aspects within three domains,including the management of common adverse drug events such as bleeding,cardiovascular events,and hematological toxicity,as well as the management of drug-drug interactions and guidance for special *** multidisciplinary expert consensus could contribute to promoting a multi-dimensional,comprehensive and standardized management of BTKis.

关键词： Consensus BTK inhibitors safety adverse drug events drug-drug interactions

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