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Scanning tunneling microscopy of buried dopants in silicon:images and their uncertainties

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npj Computational Materials 2022年第1期8卷 1727-1735页

作者： Piotr T.Różański Garnett W.Bryant MichałZieliński Institute of Physics Faculty of PhysicsAstronomy and InformaticsNicolaus Copernicus University in ToruńToruńPoland Nanoscale Device Characterization Division National Institute of Standards and TechnologyGaithersburgMD20899-8423USA

The ability to determine the locations of phosphorous dopants in silicon is crucial for the design,modelling,and analysis of atom-based nanoscale devices for future quantum computing ***,several papers showed that a metrology of scanning tunnelling microscopy(STM)imaging combined with atomistic tight-binding simulations could be used to determine coordinates of a dopant buried close to a Si *** identify effects which play a crucial role in the simulation of STM images and have to be precisely modelled for STM imaging of buried dopants and multi-dopant clusters to provide reliable position *** contrast to previous work,we demonstrate that a metrology combining STM imaging with tight-binding simulations may lead to pronounced uncertainty due to tip orbital model,effects of dangling bonds and choice of local atomic basis for the tight-binding *** work is still needed to obtain a reliable STM metrology of buried dopant position.

关键词： dopant buried metrology

Rice e3 Ligase-Like Protein OsPIAL1 Positively Regulated the Drought Stress Response but Negatively Regulated the Salt Stress Response

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Phyton-International Journal of experimental Botany 2023年第7期92卷 2017-2034页

作者： Sang ik Song Department of Bioscience and Bioinformatics Myongji UniversityYongin17058Korea

Small ubiquitin-like modifier(SUMO)e3 ligases that facilitate the conjugation of SUMO proteins to target substrates contain an SP-RING domain which is like the RING domain found in ubiquitin e3 *** this study,we isolated and characterized the Oryza sativa protein inhibitor of activated STAT like1(OsPIAL1)containing SP-RING domains,as the rice homolog of Arabidopsis ***1 interacts with OsSUMO proteins but does not interact with rice SUMO-conjugating enzymes(OsSCes).An analysis of transgenic rice plant shows that OsPIAL1 is involved in SUMO conjugation to SCes but not in SUMO conjugation to *** addition,this OsPIAL1 activity requires drought stress *** profiles show that the OsPIAL1 gene is induced by only drought stress in the leaves,whereas it is repressed by ABA and abiotic stresses in the *** stress leads to the fastest decrease in OsPIAL1 transcripts in the ***,the stress experiments indicate that the transgenic rice plants overexpressing OsPIAL1 exhibit a drought stress-tolerant phenotype but a salt stress hypersensitive *** results and those from Arabidopsis pial mutants suggest that PIALs act as a positive regulator in the drought stress response but as a negative regulator in the salt stress response.

关键词： Drought stress high-salinity stress Oryza sativa OsPIAL1 SUMO

Profile of Blow-up Solution to Hyperbolic System with Nonlocal Term

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Acta Mathematica Sinica,english Series 2007年第6期23卷 1083-1094页

作者： Zhi Wen DUAN Kwang ik KIM Department of Mathematics Huazhong University of Science and Technology Wuhan 430074 P. R. China Department of Mathematics Pohang University of Science and Technology Pohang 790-784 Republic of Korea

This paper is concerned with a nonlocal hyperbolic system as follows utt = △u ＋（∫Ωvdx ）^p for x∈R^N,t〉0 ,utt = △u ＋（∫Ωvdx ）^q for x∈R^N,t〉0 ,u（x,0）=u0（x）,ut（x,0）=u01（x） for x∈R^N,u（x,0）=u0（x）,ut（x,0）=u01（x） for x∈R^N, where 1≤ N ≤3, p ≥1, q ≥ 1 and pq 〉 1. Here the initial values are compactly supported and Ω belong to R^N is a bounded open region. The blow-up curve, blow-up rate and profile of the solution are discussed.

关键词： hyperbolic system nonlocal term blow-up profile

energy estimate for the Type-Ⅱ Superconducting Film

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Acta Mathematica Sinica,english Series 2008年第1期24卷 75-86页

作者： Kwang ik KIM Zu Han LIU Department of Mathematics Pohang University of Science and Technology Pohang 790-784 Republic of Korea Department of Mathematics Xuzhou Normal University Xuzhou 221116 P. R. China

We study the minimizers of the Ginzburg-Landau model for variable thickness, superconducting, thin films with high k, placed in an applied magnetic field hex, when hex is of the order of the ＂first critical field＂, i.e. of the order of ｜lnε｜. We obtain the asymptotic estimates of minimal energy and describe the possible locations of the vortices.

关键词： superconductivity Ginzburg-Landau functional free boundary problem

NONPARAMeTRIC IDeNTIFICATION OF MISO HAMMeRSTeIN SYSTeM FROM STRUCTUReD DATA

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Journal of Systems Science and Systems engineering 2015年第1期24卷 68-80页

作者： Pawel Wachel Przemyslaw liwiński Zygmunt Hasiewicz Department of Control Systems and Mechatronics Wroclaw University of Technology

The problem of nonparametric identification of a multivariate nonlinearity in a D-input Hammer- stein system is examined. It is demonstrated that if the input measurements are structured, in the sense that there exists some hidden relation between them, i.e. if they are distributed on some （unknown） d-dimensional space M in IRD, d 〈 D, then the system nonlinearity can be recovered at points on M with the convergence rate O（n-1/（2＋d）） dependent on d. This rate is thus faster than the generic rate O（n-1/（2＋D）） achieved by typical nonparametric algorithms and controlled solely by the number of inputs D.

关键词： MISO Hammerstein system nonparametric system identification structured data conver-gence rate

Carbon nanotube formation using zeolite template and applications

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Journal of Advanced Ceramics 2012年第3期1卷 179-193页

作者： Wei ZHAO Bijay BASNeT ik Jin KIM Institute for Processing and Application of Inorganic Materials(PAIM) Department of Materials Science and EngineeringHanseo UniversitySeosan city 356-706Korea

Carbon nanotubes(CNTs)have attracted intensive interests of researchers for a long time due to their fascinating physical and chemical properties promising for various potential applications,including advanced ceramics,nanoelectronic devices,nanoscale sensors,solar cells,battery electrode,field emitters,etc..This review summarized the synthetic methods of CNTs,with an emphasis on the chemical vapor deposition(CVD)method,especially catalytic *** there still are some challenges in the way,with the development of the technology,a hope for widespread applications always exists.

关键词： carbon nanotubes catalytic chemical vapor deposition zeolite template catalyst

Application of a Lumped Multi-Section Model for Analyzing the Thermal Performance of a Small-Scale Biomass Boiler

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Journal of Thermal Science 2021年第3期30卷 1034-1045页

作者： POLeSeK-KARCZeWSKA Sylwia WARDACH-ŚWIĘCICKA Izabela KARDAŚDariusz TURZYŃski Tomasz Renewable energy Department Szewalski Institute of Fluid-Flow MachineryPolish Academy of SciencesFiszera 14PL 80-231 GdańskPoland

The stationary lumped-cell model was developed and used to simulate the thermal characteristics of domestic biomass boiler with helically coiled tube heat exchanger(HCHe).The device serves as the heat source for ORC(Organic Rankine Cycle)unit and utilizes the thermal oil as the medium transferring the heat to the *** of studies available in the literature refer to the CFD simulations for water flow in tube coils or in one-or two-turn coil *** investigations are basically focused on the determination of Nusselt *** proposed herein model aims at determining the thermal performance of flue gas-oil HCHe while providing low CPU *** demonstrate the model possibilities,it was used to predict the flue gas temperatures at the inlet and outlet from the heat exchange zone,based on measurement data regarding the outlet temperature of thermal *** test series were *** computation results appeared to be in satisfactory agreement with experimental results(the discrepancies do not exceed 12%).The investigations showed that the used approach may be recommended as an alternative method that allows for fast prediction of thermal parameters for units of complex geometries,in particular the multi-coil heat exchangers.

关键词： lumped cell-model biomass boiler helically coiled tube heat exchanger

Insights into community-based bioassessment of environmental quality status using microphytobenthos in estuarine intertidal ecosystems

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Acta Oceanologica Sinica 2016年第6期35卷 112-120页

作者： DU Guoying CHUNG ik kyo XU Henglong College of Marine Life Science Ocean University of China Division of earth environmental System Pusan National University

The feasibility of community-based bioassessment of environmental quality status was studied using microphytobenthos（MPB） in estuarine intertidal *** sediment samples of MPB were collected monthly during a 1-year cycle（September 2006-August 2007） at four sampling stations in the Nakdong River estuary,*** variables,such as salinity,radiation,grain size of sediment,Si（OH）4（Si）,nitrate（NO3^-）,nitrite（NO2^-）,ammonium（NH4~＋） and phosphates（PO4^（3-））,were measured synchronously for comparison with biotic *** statistical analyses were carried out for assessment the relationship between biotic and environmental *** results showed that：（1） the MPB community structures were significant differences among four sampling stations;（2） spatial variation in the MPB communities were significantly correlated with environmental variables,especially the nutrient NH4＋ in combination with salinity and grain size;（3） three species（Navicula lacustris,Pleurosigma anglulatum and Fragilaria sp.1） were significantly correlated with nutrients and/or Si;and（4） the species richness and diversity were significantly correlated with the grain *** is suggested that MPB communities may be used as a potentially robust bioindicator for assessing environmental quality status in estuarine intertidal ecosystems.

关键词： marine bioassessment field community microphytobenthos estuarine intertidal ecosystem Nakdong River

China Regional Income Convergence:Using Spatial Panel data

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清华大学学报（哲学社会科学版） 2009年第S1期24卷 73-80页

作者： Moon ik Joon School of economics and Management Tsinghua University

This paper uses spatial panel data models to analyze regional growth in *** for fixed-effects allows us to disentangle the effect of spatial dependence from that of spatial heterogeneity and omitted variable to invest... 详细信息

关键词： Spatial panel data models Regional ConvergenceAbout the Author: Moon ik Joon,School of economics and Management,Tsinghua University,Ph.D.Candidate,research direction: spatial econometrics