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new look at territories of traditional nature use–traditional nature management lands at the coastal zone of the Ice Silk Road:a case study for the Russian Arctic

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International Journal of Digital Earth 2019年第8期12卷 948-961页

作者： Alexander V.Evseev Tatiana M.Krasovskaya Vladimir S.Tikunov Irina n.Tikunova Geographical Faculty Lomonosov Moscow State UniversityMoscowRussia

Territories of traditional nature use(TTnU)of indigenous population in the Arctic zone presents a historical model of sustainable development whose main principles are valuable for modern practice of economic activities in this region as *** peoples traditional nature management practice in the Russian Arctic nowadays exists only within tribal community lands,though their virtual limits may be larger and known to indigenous population,helping to preserve regional *** of TTnU in the course of modern economic development,including the northern Silk Road coastal infrastructure,is important for regional ecological and social *** may be regarded as ecological buffer zones,restoring ecosystem functions important for regional sustainable development,though modern market economy treats them mainly as economic units less valuable for incomes than industrial.A new look at TTnU may be supported by their ecologicaleconomic assessment.A case study in the coastal nenets TTnU belonging to family-clan community‘Ya’Erv’demonstrates its possible input to local sustainable development.

关键词： Indigenous peoples Russian Arctic traditional nature management ecosystem services value sustainable development Ice Silk Road

STUDIES OF ICE CRYSTAL HABIT DEVELOPMEnT In A nEW WEDGE-SHAPED ICE THERMAL DIFFUSIOn CHAMBER

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Science in China,Ser.B 1985年第9期28卷 979-987页

作者：王昂生 n.FUKUTA Institute of Atmospheric Physics Academia Sinica Beijing Department of Meteorology The University of Utah Salt Lake City Utah 84112 U. S. A.

Using clearly defined static fields of ice supersaturation and temperature in a new wedge-shaped ice thermal diffusion chamber, the process of ice crystal growth habit development was studied. For data analysis, the ratio between the maximum dimension of basal plane and that of prism plane was introduced. It was found that at ice supersaturations above about 6%, the habit was primarily temperature-dependent for both prisms and plates. Whereas, below the value and —10℃, it was virtually independent of temperature. Assuming the Wulff crystal conditions, σP/σB≈1.3～1.4 was estimated.

关键词： Za STUDIES OF ICE CRYSTAL HABIT DEVELOPMEnT In A nEW WEDGE-SHAPED ICE THERMAL DIFFUSIOn CHAMBER ICE

Observation of the hyperfine structure and anticrossings of hyperfine levels in the luminescence spectra of LiYF4:Ho3+

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Light(Science & Applications) 2022年第9期11卷 2155-2165页

作者： KIRILL n.BOLDYREV BORIS Z.MALKIn MARInA n.POPOVA Institute of Spectroscopy Russian Academy of SciencesTroitskMoscow 108840Russia Kazan Federal University Kazan 420008Russia

Resolved hyperfine structure and narrow inhomogeneously broadened lines in the optical spectra of a rare-earth-doped crystal are favorable for the implementation of various ***,a well-resolved hyperfine structure in the photoluminescence spectra of LiYF4:Ho single crystals and the anticrossings of hyperfine levels in a magnetic field are demonstrated using a self-made setup based on a Bruker 125HR high-resolution Fourier *** is the first observation of the resolved hyperfine structure and anticrossing hyperfine levels in the luminescence spectra of a *** narrowest spectral linewidth is only 0.0022 *** fact together with a large value of the magnetic g factor of several crystal-field states creates prerequisites for developing magnetic field sensors,which can be in demand in modern quantum information technology devices operating at low *** small random lattice strains characterizing the quality of a crystal can be detected using anticrossing points.

关键词： spectra luminescence hyperfine

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大气损耗对量子干涉雷达的影响机理

物理学报 2017年第15期66卷 46-56页

作者：王书任益充饶瑞中苗锡奎中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室合肥230031 中国科学技术大学合肥230026 光电对抗测试评估技术重点实验室洛阳471003

以马赫-曾德尔干涉仪作为基本模型对量子干涉雷达的探测原理进行分析,讨论了目标探测过程中光场量子态的具体演化情况,并采用宇称算符作为相位检测算符分析了量子干涉雷达的回波信号,将其与基于振幅检测的经典雷达回波信号进行比较,证... 详细信息

以马赫-曾德尔干涉仪作为基本模型对量子干涉雷达的探测原理进行分析,讨论了目标探测过程中光场量子态的具体演化情况,并采用宇称算符作为相位检测算符分析了量子干涉雷达的回波信号,将其与基于振幅检测的经典雷达回波信号进行比较,证明量子干涉雷达具有超越衍射极限的超分辨率特性.此外,针对大气损耗的进一步研究显示:量子干涉雷达分辨率受大气损耗影响较小,且可通过增大脉冲光子数n克服其影响;而量子干涉雷达的灵敏度则受到较大影响,尤其当两路光的损耗情况不同时,灵敏度随n的增加呈现先升高后降低的趋势;当两路光损耗情况相同时,系统灵敏度随n的增加而升高且正比于1/n^(1/2).综上,可根据探测光的大气损耗情况适当调节参考光的衰减来克服大气损耗带来的不良影响.

关键词：量子干涉雷达大气损耗超分辨率

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Evaluation of novel Chitosan Based Composites Coating on Wettability for Pure Titanium Implants

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Journal of Renewable Materials 2023年第4期11卷 1601-1612页

作者： Qahtan A.Hamad Hanaa A.Al-Kaisy Mohanad n.Al-Shroofy noor K.Faheed Materials Engineering Department University of TechnologyBaghdadIraq Petroleum Engineering Department University of MisanAmaraIraq

This work aims to prepare chitosan(CS)-based coated layers,CS(10 wt%nanosilver/90 wt%CS,10 wt%biotin/90 wt%CS,and 5 wt%nanosilver–5 wt%biotin)/90 wt%CS coatings are prepared,onto pure Ti *** surface morphology of the novel CS composite coating was studied using field emission scanning electron microscopy,atomic force microscopy(AFM),Fourier transforms infrared(FTIR)and wettability *** show that the addition of(biotin,nanosilver)5 Vol.%improves the properties of composite *** different particles’scale size aid in improving the combinations in the alginate,producing a dual effect on film *** surface roughness decreased in the chitosan-based biocomposite with preferable homogeneity and crack-free coating layers,as confirmed by *** increase in surface roughness ensured substitution,which enhanced the surface *** high wettability of the CS-based coating layers was due to the presence of nanoparticles,and the composite coatings with CS,nanosilver,or biotin had excellent wettability because of the good hydrophilic nature of the CS matrix combined with reinforced *** FTIR results showed that peaks of the blending of CS plus nanoparticles,CS plus biotin,or CS plus nanosilver plus biotin were excellent matching with no changes in the structure of the matrix.

关键词： nano silver biotin chitosan coating bio-composite implants titanium

A method to deliver patterned electrical impulses to Schwann cells cultured on an artificial axon

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neural Regeneration Research 2019年第6期14卷 1052-1059页

作者： Antonio Merolli Yong Mao Gregory Voronin Joseph A.M.Steele n.Sanjeeva Murthy Joachim Kohn new Jersey Center for Biomaterials Rutgers-The State University of New Jersey In Vivo Research Services Rutgers-The State University of New Jersey

Information from the brain travels back and forth along peripheral nerves in the form of electrical impulses generated by neurons and these impulses have repetitive patterns. Schwann cells in peripheral nerves receive molecular signals from axons to coordinate the process of myelination. There is evidence, however,that non-molecular signals play an important role in myelination in the form of patterned electrical impulses generated by neuronal activity. The role of patterned electrical impulses has been investigated in the literature using co-cultures of neurons and myelinating cells. The co-culturing method, however, prevents the uncoupling of the direct effect of patterned electrical impulses on myelinating cells from the indirect effect mediated by neurons. To uncouple these effects and focus on the direct response of Schwann cells,we developed an in vitro model where an electroconductive carbon fiber acts as an artificial axon. The fiber provides only the biophysical characteristics of an axon but does not contribute any molecular *** our "suspended wire model", the carbon fiber is suspended in a liquid media supported by a 3D printed scaffold. Patterned electrical impulses are generated by an Arduino 101 microcontroller. In this study, we describe the technology needed to set-up and eventually replicate this model. We also report on our initial in vitro tests where we were able to document the adherence and ensheath of human Schwann cells to the carbon fiber in the presence of patterned electrical impulses(hSCs were purchased from ScienCell Research Laboratories, Carlsbad, CA, USA; ScienCell fulfills the ethic requirements, including donor's consent). This technology will likely make feasible to investigate the response of Schwann cells to patterned electrical impulses in the future.

关键词： Schwann cell carbon fiber myelination electrical impulse artificial axon in vitro system Arduino microcontroller myelin basic protein

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nAnOSIZE EFFECT In GRAIn BOUnDARY MIGRATIOn OF COPPER

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Acta Metallurgica Sinica(English Letters) 2004年第1期17卷 11-15页

作者： L.Zhou X.Q.Wei n.G.Zhou D.G.Li School of Materials Science and Engineering Nanchang UniversityNanchang 330047ChinaSchool of Materials Science and EngineeringNanchang UniversityNanchang 330047ChinaSchool of Materials Science and EngineeringNanchang UniversityNanchang 330047ChinaCentral Iron and Steel Research InstituteBeijing 100083China

Molecular dynamics simulations of high temperature annealing of copper bicrystals have been carried out. The bicrystals have planar grain boundaries, and the gain size varies in nano range. An EAM (embedded atom method) potential of FS type is used for calculating the interatomic forces. The results show that in nanocrystalline copper, GB migration driven by inter-GB reaction can take place. A critical grain size is identified, below which the inter-GB reaction becomes strong enough to trigger GB motion, which accelerates rapidly and leads to annihilation of the grain boundaries. The critical size is found to be 16 atomic radii. A "through intermediate grain mechanism" is identified for the nano-grain boundary motion observed, which is never reported for GB migrations of conventional polycrystalline metals.

关键词： grain boundary migration nanocrystal copper

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Size Effect in Ferroelectric Long Cylinders

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Chinese Physics Letters 1995年第2期12卷 110-112页

作者： WAnG Yuguo ZHAnG Peilin WAnG Chunlei ZHOnG Weilie n.napp D.R.Tilly Department of Physics Shandong UniversityJinan 250100 Department of Physics University of EssexWivenhoe ParkColchester CO43SQEngland

The Curie temperature and polarization in a ferroelectric cylinder with infinite length have been examined using Landau free energy *** Curie temperature and polarization decrease with decreasing cylinder diameter for the positive extrapolation length,and reach zero at the critical *** negative extrapolation length,both Curie temperature and polarization increase with decreasing cylinder diameter.

关键词： expansion cylinder extrapolation

A Deep Convolutional Architectural Framework for Radiograph Image Processing at Bit Plane Level for Gender&Age Assessment

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Computers, Materials & Continua 2020年第2期62卷 679-694页

作者： n.Shobha Rani M.Chandrajith B.R.Pushpa B.J.Bipin nair Department of Computer Science Amrita School of Arts and SciencesMysuruAmrita Vishwa VidyapeethamIndia Maharaja Institute of Technology MysuruIndia

Assessing the age of an individual via bones serves as a fool proof method in true determination of individual *** attempts are reported in the past for assessment of chronological age of an individual based on variety of discriminative features found in wrist radiograph *** permutation and combination of these features realized satisfactory accuracies for a set of limited *** this paper,assessment of gender for individuals of chronological age between 1-17 years is performed using left hand wrist radiograph images.A fully automated approach is proposed for removal of noise persisted due to non-uniform illumination during the process of radiograph acquisition *** to this a computational technique for extraction of wrist region is proposed using operations on specific bit planes of image.A framework called Genet of deep convolutional neural network is applied for classification of extracted wrist regions into male and *** experimentations are conducted on the datasets of Radiological Society of north America(RSnA)of about 12442 *** of preprocessing and segmentation techniques resulted into a correlation of about 99.09%.Performance of Genet is evaluated on the extracted wrist regions resulting into an accuracy of 82.18%.

关键词： Bit plane processing automated segmentation deep convolutional network