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A digital moiré fringe method for displacement sensors

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Frontiers of Information Technology & Electronic Engineering 2016年第9期17卷 946-953页

作者： Jian WU Ting-ting ZHOU bo YUAN Li-qiang WANG State Key Laboratory of Modern Optical Instrumentation CNERC for Optical Instrument Zhejiang University

In this study, a displacement measurement method based on digital moiré fringe is described and experimentally demonstrated. The method is formed by only one grating with a constant pitch. First, the magnified grating image is received by an imaging array and is sent to a computer. Then, the digital moiré fringes are generated by overlaying the grating image with its mirrored one. Finally, a specifically designed algorithm is used to obtain the fringes' phase difference before and after movement and calculate the displacement. This method has the effects of amplifying displacement and averaging the grating lines error, the same as the traditional moiré technique using two pieces of gratings. At the same time, the proposed system is much easier to assemble and the measurement resolution can be set more flexibly. One displacement measuring system based on this method was built up. Experiment results show that its measurement errors are less than 0.3 μm and less than 0.12 μm at the resolutions of 0.1 μm and 0.03 μm, respectively.

关键词： Digital moiré fringe Displacement measurement Grating

CONTROLLED FABRICATION OF ONE-DIMENSIONAL POLYMER NANOSTRUCTURES via METALLOGEL TEMPLATE POLYMERIZATION

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Chinese Journal of Polymer Science 2012年第5期30卷 613-622页

作者： Lu qiang 唐黎明 bo-tian Li Kai Chen Laboratory of Advanced Materials Department of Chemical EngineeringTsinghua University

A facile method is reported to controllably fabricate one dimensional （1D） polymer nan,astructures via metallogel template polymerization. The metallogel was prepared through coordination interactions between silver ions and a ligand （L） bearing three pyridyl groups in tetrahydrofuran （THF）. The diameters of the metallogel nanofibers could be tuned by the gel concentration （GC）. Due to its high thermal stability and facility of removal, the metallogel was used as the template for radical polymerization of diacryolyl-2,6-diaminopyridine （DADAP） to form poly-diacryolyl-2,6-diaminopyridine （PDADAP） nanostructures. The gradually eroding of the templates by PDADAP provided us an effective way to fabricate various nanostructures of the polymer. We have demonstrated that different 1D nanostructures, including n^noribbons, nanotubes and nanowires, could be selectively fabricated by adjusting polymerization time, monomer concentration and GC. The rheological properties of the gel samples were tested by a rheometer. As prolonging the reaction time, more and more polymers were formed and the strength of the resulting polymer gels became higher and higher. The simple preparation process, easy controlled microstructures and adequate gel strength would make it a facile synthetic method for different 1D polymer nanosturctures.

关键词： One dimensional (ID) polymer nanostructure Metallogel Template polymerization Polymer gel Rheologicalproperty.

轧制及退火对Al-0.5Mg-0.08Sn-0.1Ga-0.1In合金电化学性能的影响

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材料热处理学报 2025年第2期46卷 88-96页

作者：李志强安士忠吴坷亭赵金龙陈驰王博河南科技大学材料科学与工程学院河南洛阳471023 龙门实验室河南洛阳471000 省部共建有色金属新材料与先进加工技术协同创新中心河南洛阳471023 河南省有色金属材料科学与加工技术重点实验室河南洛阳471023

铝合金阳极材料的电化学性能强烈依赖于其晶粒尺寸和析出相等微观组织。通过轧制变形和退火热处理来控制Al-0.5Mg-0.08Sn-0.1Ga-0.1In铝合金的微观组织,研究了轧制和退火对其电化学性能的影响。结果表明:轧制后合金的晶粒被拉长,第二相... 详细信息

铝合金阳极材料的电化学性能强烈依赖于其晶粒尺寸和析出相等微观组织。通过轧制变形和退火热处理来控制Al-0.5Mg-0.08Sn-0.1Ga-0.1In铝合金的微观组织,研究了轧制和退火对其电化学性能的影响。结果表明:轧制后合金的晶粒被拉长,第二相细化;退火后合金发生再结晶,随着退火温度的升高,晶粒尺寸逐渐增大,且第二相重新聚集长大。轧制态样品的自腐蚀速率比铸态样品降低了36%,经再结晶退火后,随着退火温度的升高,自腐蚀速率逐渐增加。极化曲线和电化学阻抗谱与自腐蚀实验结果一致。轧制态合金相对其他合金显示出更好的放电性能和耐腐蚀性,在100 mA·cm^(-2)电流密度下放电,能量密度达2576 mWh·g^(-1),阳极利用效率高达95.28%。

关键词：铝空气电池轧制退火微观结构电化学性能

Transverse relaxation characteristic and stress relaxation model considering molecular chains of HTPB coating based on pre-strained thermal aging

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Defence Technology（防务技术） 2021年第3期17卷 821-828页

作者： Yong-qiang Du Jian Zheng Gui-bo Yu Jian-zhuang Zhi Shijiazhuang Campus Army Engineering UniversityShijiazhuang050003China Intelligent Manufacturing Institute Hebei College of Industry and TechnologyShijiazhuang050003China

In order to accurately describe the transverse relaxation characteristic and stress relaxation modulus of HTPB coating during pre-strain thermal aging process,a one month thermal aging test was carried out at70C with pre-strain of 0%,3%,6%and 9%,*** low-field1 H NMR and stress relaxation modulus tests were carried out for HTPB coating at different aging *** stress relaxation model considering the molecular chains was proposed according to the changes of crosslinking chain and dangling chain of HTPB coating during pre-strain *** results showed that with the increase of aging time,the decay rate of transverse relaxation curve became faster,the transverse relaxation time decreased,the value of combined parameter q Mrl increased,the proportion of crosslinking chain decreased,while the proportion of dangling chain ***,the stress relaxation modulus increased,the crosslinking network structure of HTPB coating became denser and the degree of crosslinking *** the initial aging stage,the pre-strain will destroy the crosslinking network structure of HTPB coating to a certain *** the increase of aging time,the effect of pre-strain will gradually weaken and the influence of aging on materials will gradually *** correlations between the stress relaxation model considering the molecular chains and the test results were more than 0.9950,which can accurately describe the stress relaxation modulus of HTPB coating during the pre-strain thermal aging process.

关键词： HTPB Pre-strain aging Transverse relaxation characteristic Molecular chain Stress relaxation model

Reversibly sensitizing-storing-releasing ^(1)O_(2) within a single platinum(Ⅱ)-acetylide-based metallacycle molecule via laser power modulation

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Science China Chemistry 2024年第2期67卷 604-611页

作者： Ruyi Zhou Wen Lv bo Li bo Yu Sudi Zhang Yucheng Zhou Shujuan Liu qiang Zhao State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts and Telecommunications(NUPT)Nanjing210023China College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and DevicesNanjing University of Posts and Telecommunications(NUPT)Nanjing210023China

Tumor hypoxia severely limits the therapeutic efficacy of photodynamic therapy(PDT) for solid tumors,which is highly dependent on tissue oxygen *** this study,we developed a platinum(Ⅱ)-acetylide-based metallacycle compound bearing six 1,4-dimethylnaphthalenes(DMN) groups,and controlled the photodynamic and photothermal effects of the compound by adjusting the power of 730 nm laser to achieve reversible sensitization,storage and release of 1~O_(2) within a single *** compound formed nanoparticles by self-assembly and exhibited good water solubility and *** laser irradiation,the strong spin-orbit coupling of platinum atoms in the metallacycle facilitated 1~O_(2) *** produced 1~O_(2) was captured by the DMN carriers and transported into the hypoxic tumor,where 1~O_(2) release was triggered owing to the good photothermal effect of the extended conjugation of the *** therapy,the metallacycle serving as a photosensitizer,1~O_(2) carrier,and photothermal reagent,achieved the synergistic therapy of PDT/PTT,demonstrating the versatility of the *** study proposes a new strategy to develop phototherapy agents that are suitable for hypoxic tumors.

关键词： metallacycles singlet oxygen endoperoxides near-infrared absorption synergistic treatment

冰冻圈人文地理环境研究：文献分析与主要研究领域特点

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气候变化研究进展 2025年第1期21卷 32-43页

作者：王世金强文丽陆志波李春兰秦悦中国科学院西北生态环境资源研究院冰冻圈科学与冻土工程全国重点实验室玉龙雪山冰冻圈与可持续发展野外科学观测研究站/米堆冰川-光谢错冰湖灾害野外科学观测研究站同济大学环境科学与工程学院兰州大学资源环境学院华东师范大学世界地理与地缘战略研究中心

冰冻圈人文地理环境是研究冰冻圈区人类活动（人口、生计、文化、经济、政治等）的地理分布格局及其演化规律的一门学科，与冰冻圈科学、气候变化科学、环境科学、社会学等学科紧密关联。该学科主要关注冰冻圈区人类活动、人类如何适应... 详细信息

冰冻圈人文地理环境是研究冰冻圈区人类活动（人口、生计、文化、经济、政治等）的地理分布格局及其演化规律的一门学科，与冰冻圈科学、气候变化科学、环境科学、社会学等学科紧密关联。该学科主要关注冰冻圈区人类活动、人类如何适应冰冻圈环境，以及这些环境变化对人类社会的综合影响。研究显示：(1)对1970—2024年间的相关文献进行计量分析发现，原住民关键词出现频率最高，与其他关键词关联度也最高，可持续发展、文化、气候变化适应、社区、健康紧随其后，这些关键词具有显著地位，是冰冻圈人文地理环境研究的重点和热点。(2)关键词聚类形成“气候变化适应、政治、可持续发展、原住民、航道、健康、食物安全、资源、文化和旅游”10个最具代表性的集群。(3)1990—2020年间，北极地区人口数量呈小幅减少趋势，青藏高原地区呈增长态势，受冰冻圈环境限制，人口跨区域迁徙较弱。(4)冰冻圈文化以海猎、狩猎、游牧传统文化为主，宗教以原始多神教为主，民族及其语言多元，受现代生活方式和气候变化影响显著。(5)环北极冰冻圈地区以传统驯鹿和渔业活动为主，矿产-油气资源开发主要由企业运营，海冰减少促进了环北极国家的进出口贸易；青藏高原冰冻圈区经济结构以畜牧业为主。(6)冰冻圈旅游机遇与风险并存。气候变暖使冰冻圈旅游舒适度增加，环北极旅游可达性也在增强，但是中低纬地区冰雪资源受变暖影响显著，已危及滑雪旅游可持续性。(7)极地冰盖和海冰消融加速，增强了极地资源的可获取性。因涉及多国利益，各国都意图拓展领土或势力范围，获取更多资源，致使大国间博弈不断加强。中低纬冰冻圈地缘政治问题主要聚焦于“水冲突”。鉴于气候变化对冰冻圈人文地理环境影响显著，未来应多关注冰冻圈区原住民生计与福利水平提升、冰冻圈区原住民民族自治、极地地区可持续发展目标与实现路径3个方面的研究。

关键词：冰冻圈人文地理环境特征

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Evaluating changes in business distribution within urban rail transit hubs in Beijing via Point of Interest (POI) data analysis (2008-2020)

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Frontiers of Architectural Research 2024年第2期13卷 305-318页

作者： bo Wan Dongyang Wan qiang Sheng School of Architecture and Design Beijing Jiaotong UniversityBeijing 100044China

This paper,set against the backdrop of expanding urban rail networks and dynamic urban development,focuses on the distribution and evolution of commercial Points of Interests(POIs)within the central urban rail transit areas of *** study examines data from four different years-2008,2013,2017,and 2020-to observe the temporal evolution of commercial *** identifies stable explanatory variables affecting the distribution and evolution of commercial POIs,which include rail transit accessibility,characteristics of the working and residential population distribution around stations,and the construction intensity in the vicinity of station *** statistical analysis and model building,relatively stable linear regression equations were established,with R2 values generally maintained above 0.5(except for 2017).The study advances our understanding of the influence of rail transit on urban commercial spaces and how this influence shifts with temporal and urban developmental *** elucidates the correlation between changes in the number of businesses and spatial configuration,offering insights and information for urban planners and policy *** research also serves as a model for exploring the interplay between urban rail transit and commercial spaces in other major cities.

关键词： Urbanrail transit areas Spatial configuration Distributionand evolution of commercial POls

潍坊市城乡居民心理健康素养水平现况调查及影响因素分析

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中国健康教育 2025年第1期41卷 89-94页

作者：张功法林艳赵兵强高伟博俄立梅潍坊市精神卫生中心山东潍坊261000

目的了解潍坊市城乡居民心理健康素养水平并了解其影响因素。方法采用多阶段分层随机抽样的方法,采用居民心理健康素养问卷对潍坊市18岁及以上的6730名常住居民开展调查,采用t检验和χ2检验进行城乡居民间心理健康素养水平的比较,采用Lo... 详细信息

目的了解潍坊市城乡居民心理健康素养水平并了解其影响因素。方法采用多阶段分层随机抽样的方法,采用居民心理健康素养问卷对潍坊市18岁及以上的6730名常住居民开展调查,采用t检验和χ2检验进行城乡居民间心理健康素养水平的比较,采用Logistic回归分析潍坊市居民心理健康素养水平的影响因素,使用优势分析对影响因素的影响程度进行排序,使用交互作用分析探讨各影响因素之间的相互作用。结果潍坊市居民心理健康素养达标率18.86%。Logistic回归分析结果表明生活在城市(95%CI:0.68~0.95)、文化程度高(95%CI:0.07~0.51)、家庭月总收入在1500~7999元(95%CI:0.45~0.80)和有慢性病(95%CI:0.67~0.93)是心理健康素养的保护因素,年龄在60岁以上(95%CI:1.21~3.29)为危险因素。交互作用分析显示,地区与年龄之间的交互项RR为0.82;地区与文化程度之间的交互项RR为1.24(P均<0.05)。结论潍坊市居民心理健康素养达标率较高,城市居民较农村居民心理健康素养水平和达标率更高,心理健康素养水平影响因素之间的相对重要程度从大到小依次为文化程度、工作、年龄、家庭月总收入、慢性病、地区,且地区与年龄之间可能存在拮抗作用,地区与文化程度之间可能存在协同作用。

关键词：心理健康素养现况调查影响因素优势分析交互作用

Comprehensive bibliometric analysis of pharmacotherapy for bipolar disorders:Present trends and future directions

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World Journal of Psychiatry 2025年第1期15卷 153-167页

作者： bo-Fan Chen Li Liu Fang-Zhen Lin Hai-Min Zeng Hai-qiang Huang Chun-Fang Zhang Cong-Cong Liu Xiang Chen Jie Peng Yun-Fa Wang Zhi-Lin Wang Bin Chen De-Le Liu Yun Liu Zheng-Zheng Li Xin-Xing Zeng The Second Affiliated Hospital Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina The Second Clinical Medical College Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Rehabilitation Medicine The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Jiangxi Provincial People’s Hospital The First Affiliated Hospital of Nanchang Medical CollegeNanchang 330006Jiangxi ProvinceChina Department of Psychiatry Jiangxi Mental HospitalHospital of Nanchang UniversityNanchang UniversityNanchang 330029Jiangxi ProvinceChina

BACKGROUND Bipolar disorder(BD)is a severe mental illness characterized by significant mood *** drug treatment modalities are crucial for managing *** To analyze the current status and future trends of global research on BD drug treatment over the last *** The Web of Science Core Collection database spanning from 2015 to 2024 was utilized to retrieve literature related to BD drug treatment.A total of 2624 articles were *** visualization and analysis were conducted using CiteSpace,VOSviewer,Pajek,Scimago Graphica,and R-studio bibliometrix to identify RESULTS The United States,China,and the United Kingdom have made the most significant contributions to research on BD drug treatment and formed notable research collaboration *** University of Pittsburgh,Massachusetts General Hospital,and the University of Michigan have been identified as the major research institutions in this *** Journal of Affective Disorders is the most influential journal.A keyword analysis revealed research hotspots related to clinical symptoms,drug efficacy,and genetic mechanisms.A citation analysis identified the management guidelines published by Yatham et al in 2018 as the most cited *** This study provides a detailed overview of the field of BD drug treatment,highlighting key contributors,research hotspots,and future *** study findings can be employed as a reference for future research and policymaking,which may enable further development and optimization of BD pharmacotherapy.

关键词： Bipolar disorder Drug treatment Bibliometric analysis Visualization Mental disorder