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Laser induced fluorescence diagnostic for velocity distribution functions:applications,physics,methods and developments

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Plasma Science and Technology 2021年第5期23卷 75-95页

作者： Chi-Shung YIP di jiang Institute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031People's Republic of China

With more than 30 years of development,laser-induced fluorescence(LIF)is becoming an increasingly common diagnostic to measure ion and neutral velocity distribution functions in different fields of studies in plasma science including Hall thrusters,linear devices,plasma processing,and basic plasma physical *** this paper,technical methods used in the LIF diagnostic,including modulation,collection optics,and wavelength calibration techniques are reviewed in detail.A few basic physical processes along with applications and future development associated with the LIF diagnostics are also reviewed.

关键词： plasma diagnostics laser induced fluorescence laser spectroscopy

L^p(R^n)-Boundedness of certain commutators

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Applied Mathematics(A Journal of Chinese Universities) 2010年第2期25卷 185-191页

作者： di Yan-mei jiang Li-ya Department of Mathematics Zhejiang University of Technology Hangzhou 310023 China

In this paper, the LP（Rn）-boundedness of the commutators generalized by BMO（Rn） function and the singular integral operator T with rough kernel Ω∈ L log＋ L（Sn-1）is proved by using the Bony＇s formula for the... 详细信息

关键词： Commutators paraproduct Littlewood-Paley theory.

NHC-catalyzed Redox-Neutral Aza-Benzoin Reaction of Aldehydes with Tetrahydroisoquinolines

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Chinese Journal of Chemistry 2020年第2期38卷 135-138页

作者： di jiang Zijun Wu Jian Wang School of Pharmaceutical Sciences Key Laboratory of Bioorganic Phosphorous Chemistry&Chemical Biology(Ministry of Education)Tsinghua UniversityBeijing 100084China

Summary of main observation and conclusion Tetrahydroisoquinoline derivatives are useful synthetic intermediates,which play an important role in the preparation of natural products,pharmaceuticals and other ***,we report an unprecedented redox-neutral aza-benzoin protocol to construct such *** exposure of tetrahydroisoquinolines to aromatic aldehydes in the prese nee of an NHC catalyst,the C-l acylated tetra hydroisoquinolines were obtained in moderate to good yields.

关键词： materials. quinoline aldehydes

Cancelable biometric schemes for Euclidean metric and Cosine metric

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Cybersecurity 2023年第3期6卷 37-56页

作者： Yubing jiang Peisong Shen Li Zeng Xiaojie Zhu di jiang Chi Chen State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of SciencesBeijingChina School of Cyber Security University of Chinese Academy of SciencesBeijingChina College of Engineering Abu Dhabi UniversityAbu DhabiUnited Arab Emirates

The handy biometric data is a double-edged sword,paving the way of the prosperity of biometric authentication systems but bringing the personal privacy *** alleviate the concern,various biometric template protection schemes are proposed to protect the biometric template from information *** preponderance of existing proposals is based on Hamming metric,which ignores the fact that predominantly deployed biometric recognition systems(***,voice,gait)generate real-valued templates,more applicable to Euclidean metric and Cosine ***,since the emergence of similarity-based attacks,those schemes are not secure under a stolen-token *** this paper,we propose a succinct biometric template protection scheme to address such a *** proposed scheme is designed for Euclidean metric and Cosine metric instead of Hamming ***,the succinct biometric template protection scheme consists of distance-preserving,one-way,and obfuscation *** be specific,we adopt location sensitive hash function to realize the distance-preserving and one-way properties simultaneously and use the modulo operation to implement many-to-one *** also thoroughly analyze the proposed scheme in three aspects:irreversibility,unlinkability and ***,comprehensive experiments are conducted on publicly known face *** the results show the effectiveness of the proposed scheme.

关键词： Biometric template protection distance-preserving hashing Many-to-one mapping

Carbon nanotubes for electronics manufacturing and packaging:from growth to integration

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Advances in Manufacturing 2013年第1期1卷 13-27页

作者： Johan Liu di jiang Yifeng Fu Teng Wang Department of Microtechnology and Nanoscience Chalmers University of Technology Key Laboratory of Advanced display and System Applications and SMIT Center School of Automation and Mechanical Engineering Shanghai University SHT Smart High Tech AB Fysikgrnd 3412 96 GothenburgSweden

Carbon nanotubes （CNTs） possess excellent electrical, thermal and mechanical properties. They are light in weight yet stronger than most of the other materials. They can be made both highly conductive and semi-conductive. They can be made from nano-sized small catalyst particles and extend to tens of millimeters long. Since CNTs emerged as a hot topic in the early 1990s, numerous research efforts have been spent on the study of the various properties of this new material. CNTs have been proposed as alternative materials of potential excellence in a lot of applications such as electronics, chemical sensors, mechanical sensors/actuators and composite materials, etc. This paper reviews the use of CNTs particularly in electronics manufacturing and packaging field. The progresses of three most important applications, including CNT-based thermal interface materials, CNT-based interconnections and CNT-based cooling devices are reviewed. The growth and post-growth processing of CNTs for specific applications are introduced and the tai- loring of CNTs properties, i.e., electrical resistivity, thermal conductivity and strength, etc., is discussed with regard to specific application requirement. As the semiconductor industry is still driven by the need of getting smaller and faster, CNTs and the related composite systems as emerging new materials are likely to provide the solution to the future challenges as we make more and more complex electronics devices and systems.

关键词： Carbon nanotubes Electronicsmanufacturing Electronics packaging - Growth Integration

Self-assembly Induced by Complexation of diblock Copolyelectrolytes and Oppositely Charged Homopolymers

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Chinese Journal of Polymer Science 2024年第9期42卷 1321-1332,I0006页

作者： Ling Zhao Zhi-Yuan Yin Jia-di jiang Er-Qiang Chen Shuang Yang Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Mater Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

We investigate the solution self-assembly of a mixture of positively charged homopolymers and AB diblock copolymers,in which the A blocks are negatively charged,and the B blocks are *** electrostatic complexation between oppositely charged polymers drives the formation of many ordered *** microstructures and phase diagrams are calculated using self-consistent field theory(SCFT)based on an ion-pair model with an equilibrium constant K to characterize the strength of binding between positively and negatively charged *** effects of the charge ratio,representing the ratio of charges from the homopolymer over all charges from polymers in the system,on the ordered structure are systematically studied,both for hydrophobic and hydrophilic A *** charge ratio plays an important role in determining the phase boundaries in the phase diagram of salt concentration versus polymer *** also provide information about the varying tendency of the domain spacing and core size of the spherical phase when the charge ratio is changed,and the results are in good agreement with *** studies provide a deep understanding of the self-assembled microstructures of oppositely charged diblock copolymer-homopolymer systems.

关键词： Self-assembly Polyelectrolyte complexation Self-consistent field theory Ion-pair

GIS-based spatial differentiation of ethnic minority villages in Guizhou Province,China

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Journal of Mountain Science 2022年第4期19卷 987-1000页

作者： ZHENG Guang-hui jiang di-fei LUAN Yong-fei YAO Yao Architecture and Art School Central South UniversityChangsha 410083China MOE Key Laboratory of Regional Energy and Environmental Systems Optimization Environmental Research AcademyNorth China Electric Power UniversityBeijing 102206China Public Management Guizhou University of Finance and EconomicsGuiyang 550025China

The protection and development problems in ethnic minority villages have received great attention from the Chinese *** study aims to systematically identify the spatial differentiation characteristics of ethnic minority villages and their influencing factors in Guizhou *** ArcGIS and GeoDa,a total of 1,014 ethnic minority villages in the four batches announced by the Ethnic and Religious Affairs Commission of Guizhou Province(272in the first batch,240 in the second batch,255 in the third batch,and 247 in the fourth batch)served as the research *** the economic development data in Guizhou Statistical Yearbook 2018-2020 for analysis,the coupling calculation of the spatial layout and economic development level of ethnic minority villages was *** results indicate that the number of ethnic minority village points varies in spatial distribution with remarkable *** spatial equilibrium distribution of ethnic minority villages in the province is *** kernel density is characterized by independent single kernel centers with sporadic distributions of subcenters and an echelon distribution *** spatial complexity distribution indicates that ethnic minority villages in Guizhou possess unequal characteristics,and the fractal of the system structure is more *** findings reveal that the spatial distribution of ethnic minority characteristic villages in Guizhou is highly consistent with that of ethnic minorities in *** distribution is the combined results of geographical factors and socialeconomic *** ethnic minority characteristic villages in Guizhou Province are located in areas with complex terrain,inconvenient transportation,and relatively backward economic *** on the current geospatial distribution of ethnic minority villages,the present study will provide remarkable implications for the Chinese government to implement the Rural Revitalization Strategy from

关键词： Guizhou Province Ethnic villages Spatial differentiation Sustainability

The potential application of formulation with pimelic acid as eye drops for corneal collagen cross-linking

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Medicine in Novel Technology and Devices 2024年第2期22卷 29-37页

作者： Daishi Chen di jiang Zhaoyang Ke Shenzhen People's Hospital Southern University of Science and TechnologyShenzhen518020GuangdongPeople's Republic of China The Tenth Affiliated Hospital of Southern Medical University(Dongguan People's Hospital) DongguanPeople's Republic of China

Background and aim:Keratoconus is a slowly progressive and non-inflammatory disease of eye of unknown etiology characterized by significant structural degeneration,thinning and protrusion of *** cross linking using Riboflavin/ultraviolet A,paraformaldehyde and glutaraldehyde has been widely used to treat keratoconus,but these techniques have several clinical *** study aimed to develop a rapid,safer,less toxic and more effective method to increase the corneal stiffness hence treating keratoconus by using EDC/NHS coupling with pimelic acid(PA)as ***:The viability of corneal epithelial and endothelial cells was examined using Alamar *** corneal collagen and tissue integrity were evaluated with Masson and hematoxylin and eosin stains *** tensile testing was conducted to determine the tissue *** further assessed the effective penetration depth of cross-linking by fluorescence dye and confocal *** assay was performed to detect the damaged DNA fragments in the presence of ***:The effect of PA solution on corneal cross-linking showed a significant increase in corneal rigidity without affecting the epithelium integrity under neutralized pH condition,while DEC/NHS alone did not induce the mechanical *** penetration depth showed consistent results with increased stiffness,which could be affected by the parameters including pH condition,coupling with or without *** addition,PA significantly decreased the percentage of TUNEL-positive cells compared to that of EDC/NHS only *** cytotoxic effect to endothelium was considered minimal and protected in the presence of ***:We demonstrated PA as a potential alternative for cross-linking in the model of whole eye with intact epithelium and its protective role on *** administration of this chemical cross-linker stands as an extremely promising technique for the treatment of corneal keratoconus.

关键词： Corneal cross-linking Keratoconus Pimelic acid NHS/EDCI

A New Flavonoid from Oxytropis kansuensis

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Chinese Chemical Letters 2006年第12期17卷 1576-1578页

作者： Jun Xi LIU Xin Yi HUANG Duo Long di Sheng Xiang jiang Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000

A new flavonoid 1 rhamnocitrin-3-O-（6＂-femloyl）-β-D-galactopyranoside-4＇-O-β-D- glucospyranoside called kansuensisoside A together with a known flavonoid 2 （rhamnocitrin- 3-O-β-D-galactopyranoside-4＇-O-β-D-glucospyranoside） were isolated from the extract of the whole plant of Oxytropis kansuensis Bunge. The structure of 1 was elucidated by spectroscopic methods including 2D-NMR techniques （COSY, HMQC, HMBC） and HR-ESIMS.

关键词： Oxytropis kansuensis Bunge leguminosae flavonoid kansuensisoside A