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Height estimation from single aerial imagery using contrastive learning based multi-scale refinement network

International Journal of Digital Earth 2023年第1期16卷 2322-2340页

作者： Wufan Zhao Hu ding Jiaming na Mengmeng Li Dirk Tiede Geomatics Section Department of Civil EngineeringFaculty of Engineering TechnologyKU LeuvenBelgium School of Geography South China Normal UniversityGuangzhouPeople’s Republic of China College of Civil Engineering Nanjing Forestry UniversityNanjingPeople’s Republic of China Academy of Digital China(Fujian) Fuzhou UniversityFuzhouPeople’s Republic of China Department of Geoinformatics(Z_GIS) Faculty of Digital and Analytical SciencesParis Lodron University of SalzburgSalzburgAustria

Height map estimation from a single aerial image plays a crucial role in localization,mapping,and 3D object *** convolutional neural networks have been used to predict height information from single-view remote sensing images,but these methods rely on large volumes of training data and often overlook geometric features present in orthographic *** address these issues,this study proposes a gradient-based self-supervised learning network with momentum contrastive loss to extract geometric information from non-labeled images in the pretraining ***,novel local implicit constraint layers are used at multiple decoding stages in the proposed supervised network to refine high-resolution features in height *** structural-aware loss is also applied to improve the robustness of the network to positional shift and minor structural changes along the boundary *** evaluation on the ISPRS benchmark datasets shows that the proposed method outperforms other baseline networks,with minimum MAE and RMSE of 0.116 and 0.289 for the Vaihingen dataset and 0.077 and 0.481 for the Potsdam dataset,*** proposed method also shows around threefold data efficiency improvements on the Potsdam dataset and domain generalization on the Enschede *** results demonstrate the effectiveness of the proposed method in height map estimation from single-view remote sensing images.

关键词： Height estimation aerial imagery digital surface models contrastive learning local implicit constrain

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A Flexible Smart Healthcare Platform Conjugated with Artificial Epidermis Assembled by Three‑Dimensionally Conductive MOF Network for Gas and Pressure Sensing

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nano-Micro Letters 2025年第2期17卷 601-620页

作者： Qingqing Zhou Qihang ding Zixun Geng Chencheng Hu Long Yang Zitong Kan Biao Dong Miae won Hongwei Song Lin Xu Jong Seung Kim State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department of Chemistry Korea UniversitySeoul 02841Republic of Korea TheranoChem Incorporation Seoul 02856Republic of Korea

The rising flexible and intelligent electronics greatly facilitate the noninvasive and timely tracking of physiological information in telemedicine *** building bionic-sensitive moieties is vital for designing efficient electronic skin with advanced cognitive functionalities to pluralistically capture external ***,realistic mimesis,both in the skin’s three-dimensional interlocked hierarchical structures and synchronous encoding multistimuli information capacities,remains a challenging yet vital need for simplifying the design of flexible logic ***,we construct an artificial epidermal device by in situ growing Cu_(3)(HHTP)_(2) particles onto the hollow spherical Ti_(3)C_(2)T_(x) surface,aiming to concurrently emulate the spinous and granular layers of the skin’s *** bionic Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2) exhibits independent NO_(2) and pressure response,as well as novel functionalities such as acoustic signature perception and Morse code-encrypted message ***,a wearable alarming system with a mobile application terminal is self-developed by integrating the bimodular senor into flexible printed *** system can assess risk factors related with asthmatic,such as stimulation of external NO_(2) gas,abnormal expiratory behavior and exertion degrees of fingers,achieving a recognition accuracy of 97.6%as assisted by a machine learning *** work provides a feasible routine to develop intelligent multifunctional healthcare equipment for burgeoning transformative telemedicine diagnosis.

关键词： Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2)composites NO_(2)/pressure flexible sensors Health-monitoring Machine learning

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Shape-controllable Synthesis of Functional nanomaterials on Dna Templates

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Chemical Research in Chinese Universities 2020年第2期36卷 171-176页

作者： ZHU Jinjinu SHANG Yingxu YU Haiyin LI na ding Baoquan College of Chemistry and Materials Science Anhui Normal UniversityWuhu 241002P.R China CAS Key Laboratory of nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190P.R China

Dna nanotechnology enables precise organization of nanoscale objects with extraordinarily structural ***-assembled Dna nanostructures possess a lot of interesting features,such as designable size and shape,and structural addressability at nanometer *** advantage of these properties,Dna nanostructures could work as templates or molds for the controllable synthesis of functional nanomaterials,such as organic macromolecules,metallic or inorganic nonmetallic *** this review,we summarize the recent progress in the shape-controllable synthesis of functional nanomaterials on Dna *** potential application fields of these nanomaterials are also discussed.

关键词： Dna origami Templated synthesis Organic macromolecule Metallic nanomaterial Inorganic nonmetallic nanomaterial

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Preparation of double-emulsion-templated microspheres with controllable porous structures by premix membrane emulsification

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Particuology 2019年第3期17卷 22-27页

作者： Xiangming na Weiqing Zhou Tong Li ding Hong Juan Li Guanghui Ma State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

A scalable and versatile strategy was developed for the fabrication of uniform polymeric microspheres with controllable interconnected porous structures. Uniform water-in-oil-in-water emulsions with linear poly(methyl methacrylate-glycidyl methacrylate) in the oil phase were generated by two-step premix membrane emulsification and used for constructing the microspheres. During the emulsion solidification process, internal water droplets were packed densely together, forming a thin oil film between the internal and external water phases. After solvent diffusion, the thin film can be ruptured and pores can be templated from the internal water droplets to form interconnected porous structures. Membranes with various pore sizes were obtained. The osmotic pressure and Laplace pressure balance were used to control the porosity and pore size precisely. The proposed method enables the fabrication of functional polymeric microspheres with uniform and controllable porous structures and particle sizes. This improves their performance and broadens the scope of their applications, especially in chromatographic separation.

关键词： Double emulsion Membrane emulsification Porous microsphere Uniform structure

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Dna-assembled bimetallic plasmonic nanosensors

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Light(Science & Applications) 2014年第1期3卷 1-4页

作者： na Li Andreas Tittl Song Yue Harald Giessen Chen Song Baoquan ding na Liu national Center for nanoscience and Technology Beijing 100190China th Physics Institute and Research Center Scope University of StuttgartD-70569 StuttgartGermany Max Planck Institute for Intelligent Systems D-70569 StuttgartGermany

Plasmonic hybrid nanomaterials are highly desirable in advanced sensing *** components in these materials undertake distinct roles and work *** material component may act as an efficient light concentrator and optical probe,whereas another provides specific chemical or biological *** this work,we present Dna-assembled bimetallic plasmonic nanostructures and demonstrate their application for the all-optical detection of ***(Au)nanorods are functionalized with Dna strands,which serve both as linkers and seeding sites for the growth of palladium(Pd)nanocrystals and facilitate reliable positioning of Pd satellites around an Au nanorod at an ultrashort spacing in the nanometer ***-field scattering spectra of single Au–Dna–Pd nanorods were recorded during controlled cycles of hydrogen gas exposure,and an unambiguous concentration-dependent optical response was *** method enables,for the first time,the all-optical detection of hydrogen-induced phase-change processes in sub-5-nm Pd nanocrystals at the single-antenna *** substituting the Pd satellites with other functional materials,our sensor platform can be extended to plasmonic sensing of a multitude of chemical and biological reagents,both in liquid and gaseous phases.

关键词： Dna self-assembly hydrogen sensing palladium plasmonics

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Genetic Analysis and Gene Mapping of Short Root Mutant Rice ksr1

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Rice science 2011年第1期18卷 67-70页

作者： NING Yong-qiang ding wo-na ZHU Shi-hua Yu Hang-wei Yu Hang Lu Kai-xing Laboratory of Plant Molecular Biology Ningbo University Ningbo 315211 China

A short root mutant ksrl with the Kasalath background was isolated from an EMS-mutagenized population in rice. The root length of 6-day-old ksr1 seedlings was only about 20% of the wild type. Genetic analysis indicated that the short root phenotype of ksrl was controlled by a recessive mutation in a single nuclear-encoded gene. To map the ksrl mutation, an F2 population was generated by crossing the ksrl mutant with Nipponbare. The KSR1 locus was linked to the SSR marker RM1223 on rice chromosome 4. Eight new SSR markers and two InDel markers were developed around this marker. KSR1 gene was further mapped to a 155 kb region, flanked by the InDel marker 4-24725K and the SSR marker RM17182.

关键词： rice short root gene mapping molecular marker

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The rate of period change in DAV stars

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Research in Astronomy and Astrophysics 2017年第7期17卷 11-24页

作者： Yan-Hui Chen Cai-Yun ding Wei-Wei na Hong Shu Institute of Astrophysics Chuxiong Normal University School of Physics and Electronical Science Chuxiong Normal University Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences School of Physics and Electronic Engineering Yuxi Normal University

Grids of DAV star models are evolved by WDEC, taking the element diffusion effect into account. The grid parameters are hydrogen mass log（MH/M＊）, helium mass log（MHe/M＊）, stellar mass M＊and effective temperature T_（eff） for DAV stars. The core compositions are from white dwarf models evolved by MESA. Therefore, DAV star models evolved by WDEC have historically viable core compositions. Based on those DAV star models, we studied the rate of period change（P˙（k）） for different values of H, He, M_＊and Teff. The results are consistent with previous work. Two DAV stars G117-B15A and R548 have been observed for around 40 years. The rates of period change of two large-amplitude modes were obtained through the O-C method. We conducted an asteroseismological study on the two DAV stars and then obtained a best-fitting model for each star. Based on the two best-fitting models,the mode identifications（l, k） of the observed modes for G117-B15A and R548 are consistent with previous work. Both the observed modes and the observedP˙ s can be fitted by calculated ones. The results indicate that our method of evolving DAV star models is feasible.

关键词： stars oscillations (including pulsations) - stars individual (G117-B 15A and R548) -white dwarfs

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Facile Synthesis of FePS3 nanosheets@MXene Composite as a High-Performance Anode Material for Sodium Storage

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nano-Micro Letters 2020年第4期12卷 109-120页

作者： Yonghao ding Yu Chen na Xu Xintong Lian Linlin Li Yuxiang Hu Shengjie Peng Jiangsu Key Laboratory of Materials and Technology for Energy Conversion College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China nanomaterials Centre Australian Institute for Bioengineering and Nanotechnologyand School of Chemical EngineeringThe University of QueenslandBrisbaneQLD 4072Australia

Searching for advanced anode materials with excellent electrochemical properties in sodium-ion battery is essential and imperative for next-generation energy storage system to solve the energy shortage *** this work,two-dimensional(2D)ultrathin FePS3 nanosheets,a typical ternary metal phosphosulfide,are first prepared by ultrasonic *** novel 2D/2D heterojunction of FePS3 nanosheets@MXene composite is then successfully synthesized by in situ mixing ultrathin MXene nanosheets with FePS3 *** resultant FePS3 nanosheets@MXene hybrids can increase the electronic conductivity and specific surface area,assuring excellent surface and interfacial charge transfer ***,the unique heterojunction endows FePS3 nanosheets@MXene composite to promote the diffusion of na^+ and alleviate the drastic change in volume in the cyclic process,enhancing the sodium storage ***,the few-layered FePS3 nanosheets uniformly coated by ultrathin MXene provide an exceptional reversible capacity of 676.1 mAh g^−1 at the current of 100 mA g^−1 after 90 cycles,which is equivalent to around 90.6% of the second-cycle capacity(746.4 mAh g^−1).This work provides an original protocol for constructing 2D/2D material and demonstrates the FePS3@MXene composite as a potential anode material with excellent property for sodium-ion batteries.

关键词： Anode Composite FePS3 nanosheets MXene Sodium-ion battery

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Overview of the main biological mechanisms linked to changes in periodontal ligament stem cells and the inflammatory microenvironment

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第5期24卷 373-386页

作者： Xuetao ZHAO Hongbing LIN Tong ding Yawei WANG na LIU Yuqin SHEN Department of Periodontics Jilin Provincial Key Laboratory of Tooth Development and Bone RemodelingHospital of StomatologyJilin UniversityChangchun 130021China Department of Periodontics Affiliated Stomatology Hospital of Guangzhou Medical UniversityGuangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative MedicineGuangzhou 510182China

Periodontitis is a complex chronic inflammatory *** invasion of pathogens induces the inflammatory microenvironment in *** behavior changes in response to changes in the microenvironment,which in turn alters the local inflammatory microenvironment of the periodontium through factors secreted by *** has been confirmed that periodontal ligament stem cells(PDLSCs)are vital in the development of periodontal ***,PDLSCs are the most effective cell type to be used for periodontium *** review focuses on changes in PDLSCs,their basic biological behavior,osteogenic differentiation,and drug effects caused by the inflammatory microenvironment,to provide a better understanding of the influence of these factors on periodontal tissue *** addition,we discuss the underlying mechanism in detail behind the reciprocal responses of PDLSCs that affect the microenvironment.

关键词： Inflammatory microenvironment Inflammatory regulation Osteogenic differentiation Periodontal ligament stem cells Periodontitis

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Antarctic krill antioxidant peptides show inferior IgE-binding ability and RBL-2H3 cell degranulation

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Food Science and Human Wellness 2023年第5期12卷 1772-1778页

作者： Jie ding Chunyan Zhu Pengfei Jiang Libo Qi na Sun Songyi Lin national Engineering Research Center of Seafood School of Food Science and TechnologyDalian Polytechnic UniversityDalian 116034China Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China Ganzhou Quanbiao Biological Technology Co. Ltd.Ganzhou 341100China

Enzymatic hydrolysis,isolation,and purification might make a great deal of difference in antioxidant activity and antigenicity of peptide *** study aimed to isolate and purify antioxidant peptide components from Antarctic krill and evaluate their allergenicity of *** paramagnetic resonance(EPR)spectroscopy results indicated 3-10 kDa Antarctic krill hydrolysates(AKHs)had higher DPPH and·OH radical scavenging *** the second component(N2-2)purified 3-10 kDa hydrolysate showed better ability to scavenge DPPH and·OH radicals(Pding capability to specific IgG1(P<0.05).And N2-2 had a higher EC50 value of(5.29±0.95)ng/mL(P<0.05)in cell degranulation assay,which was about 13.80 times that of Antarctic ***,N2-2 might be the potential source of the antioxidant peptides with lower allergenicity.

关键词： Enzymatic hydrolysis Isolation Purification Antarctic krill antioxidant peptide Allergenicity

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