检索结果-南通市图书馆

Ad.a.cing Wound Filling Extraction on 3d Faces:An Auto-Segmentation and Wound Face Regeneration Approach

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第5期139卷 2197-2214页

作者： duong Q.Nguyen Thinh d.Le Phuong d.Nguyen Nga T.K.Le H.Nguyen-Xuan department of Mathematics and Statistics Quy Nhon UniversityQuy Nhon City55100Viet Nam Applied Research Institute for Science and Technology Quy Nhon UniversityQuy Nhon City55100Viet Nam CIRTECH Institute HUTECH UniversityHo Chi Minh City72308Viet Nam

Facial wound segmentation plays a crucial role in preoperative planning and optimizing patient outcomes in various medical *** this paper,we propose an efficient approach for automating 3d facial wound segmentation using a two-stream graph convolutional *** method leverages the Cir3d-FaIR dataset and.a.dresses the challenge of data imbalance through extensive experimentation with different loss *** achieve accurate segmentation,we conducted thorough experiments and selected.a.high-performing model from the *** selectedmodel demonstrates exceptional segmentation performance for complex 3d facial ***,based on the segmentation model,we propose an improved.a.proach for extracting 3d facial wound fillers and compare it to the results of the previous *** method.a.hieved.a.remarkable accuracy of 0.9999993% on the test suite,surpassing the performance of the previous *** this result,we use 3d printing technology to illustrate the shape of the wound *** outcomes of this study have significant implications for physicians involved in preoperative planning and intervention *** automating facial wound segmentation and improving the accuracy ofwound-filling extraction,our approach can assist in carefully assessing and optimizing interventions,leading to enhanced patient ***,it contributes to ad.a.cing facial reconstruction techniques by utilizing machine learning and 3d bioprinting for printing skin tissue *** source code is available at https://***/SIMOGroup/WoundFilling3d.

关键词： 3d printing technology face reconstruction 3d segmentation 3d printed model

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

勒辛铀矿穿孔、爆破、装载及运输的生产实践

国外金属矿山 1990年第9期15卷 11-18页

作者： d.a.桑迪阚世喆纳米比亚勒辛露天矿

纳米比亚勒辛(Rossing)铀矿是用常规大型设备开采的露天矿山。生产始于1976年,现在每年计划采运矿岩5000万t。

关键词：铀矿爆破装载运输

在线全文

学校读者我要写书评

暂无评论

药物安全性评价——临床前的考虑

实验动物与比较医学 1984年第4期 274-276页

作者： William,d.a. 冯怡希

用实验动物进行新药安全性研究是为药物用于人体时提供某些预期可能产生的作用。在安全评价的开始阶段在人和实验动物中进行交叉研究,随着临床研究的进展就需要另外进一步的动物资料去支持临床扩大试验和支持作为药物医疗推广的适用性... 详细信息

用实验动物进行新药安全性研究是为药物用于人体时提供某些预期可能产生的作用。在安全评价的开始阶段在人和实验动物中进行交叉研究,随着临床研究的进展就需要另外进一步的动物资料去支持临床扩大试验和支持作为药物医疗推广的适用性。关于人的临床研究的开始或继续,应当由药理学家,

关键词：药物安全性评价实验动物动物模型剂量用药量酶诱导作用大鼠临床前

Mixed convection of alumina-water nanofluid inside a concentric annulus considering nanoparticle migration

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Particuology 2016年第1期14卷 113-122页

作者： A. Malvandi d.d. Ganji department of Mechanical Engineering Neyshabur Branch Islamic Azad University Neyshabur Iran Mechanical Engineering department Babol University of Technology Babol Iran

A theoretical investigation was conducted of laminar fully developed mixed convection of alumina-water nanofluid through a vertical annulus, to improve its heating/cooling performance. We focused on con- trolling the nanoparticle migration and studying how it affected the heat transfer rate and pressure drop. Because the nanoparticles have very small dimensions, we only considered Brownian motion and ther- mophoretic diffusivity as the main causes of nanoparticle migration. Because thermophoresis is very sensitive to temperature gradients, we imposed various temperature gradients using asymmetric heat- ing. Considering hydrodynamically and thermally fully developed flow, the governing equations were reduced to two-point ordinary boundary value differential equations and were solved numerically. The imposed thermal asymmetry changed the direction of nanoparticle migration and distorted the velocity, temperature, and nanoparticle concentration profiles. Moreover, we found optimum values for the radius ratio （ζ） and heat flux ratio （ε）; with these optimum values, the nanofluid enhanced the efficacy of the system.

关键词： Nanofluid Nanoparticle migration Mixed convection Asymmetry heating Modified Buongiorno's mode

Fullwave doppler reflectometry simulations for density turbulence spectra in ASdEX Upgrade using GENE and IPF-Fd3d

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2020年第6期22卷 41-48页

作者： C LECHTE G d CONWAY TGÖRLER T HAPPEL the ASdEX Upgrade Team Institute of Interfacial Process Engineering and Plasma Technology IGVP Universität StuttgartD-70569 StuttgartGermany Max-Planck-Institute for Plasma Physics D-85748 GarchingGermany 不详

doppler reflectometry is an important microwave d.a.nostic for turbulent fusion plasmas.A microwave beam is scattered off density fluctuations,with wavenumbers according to incident frequency and relative *** way,a density fluctuation spectrum is ***,the correspondence between fluctuation power and scattered microwave power is strongly *** these processes numerically therefore requires fullwave simulations(IPF-Fd3 d),with density fluctuations supplied by a separate plasma turbulence code(GENE).Earlier such attempts suffered from the low number of data points in the‘interesting’part of the spectrum,where a power law had to be fitted to 4 or 5 *** has been overcome with recent simulations,which now show a much better agreement with experimental data.

关键词： plasma d.a.nostics doppler reflectometry simulation microwaves

Rethinking the solar flare paradigm

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2018年第7期20卷 15-21页

作者： d b melrose SIfA School of PhysicsThe University of SydneyNSW 2006Australi

It is widely accepted that solar flares involve release of magnetic energy stored in the solar corona above an active region, but existing models do not include the explicitly time-dependent electrodynamics needed to describe such energy release. A flare paradigm is discussed that includes the electromotive force （EMF） as the driver of the flare, and the flare-associated current that links different regions where magnetic reconnection, electron acceleration, the acceleration of mass motions and current closure occur. The EMF becomes localized.a.ross regions where energy conversion occurs, and is involved in energy propagation between these regions.

关键词： solar flares electrodynamics time-dependence

ASYMPTOTIC LIMITS ANd STABILIZATION FOR THE 1d NONLINEAR MINdLIN-TIMOSHENKO SYSTEM

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2010年第3期23卷 414-430页

作者： F.d.a.ARUNA P.BRAZ E SILVA E.ZUAZUA departamento de Matemática Universidade Federal da Paraíba departamento Ikerbasque Research Professor Basque Center for Applied Mathematics(BCAM)

This paper shows how the so called von Karman model can be obtained.a. a singular limit of a modified Mindlin-Timoshenko system when the modulus of elasticity in shear κ tends to infinity, provided.a.regularizing term through a fourth order dispersive operator is added. Introducing damping mechanisms, the authors also show that the energy of solutions for this modified Mindlin-Timoshenko system decays exponentially, uniformly with respect to the parameter k. As κ→∞, the authors obtain the damped von Karman model with associated energy exponentially decaying to zero as well.

关键词： Mindlin-Timoshenko system singular limit uniform stabilization vibrating beams von Karman system.

Parallel Perturbed Gauss-Newton State Estimator Based on Fortescue Transformation for Unbalanced Power Systems

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2022年第6期10卷 1778-1783页

作者： Izudin d.a.ić Faculty of Electrical Engineering University of SarajevoSarajevo 71000Bosnia and Herzegovina

This letter extends the complex-variable perturbed Gauss-Newton method to estimate the state of unbalanced power systems by exploiting the Fortescue *** proposes a novel and efficient graph-based way to d.a. with singularities due to zero-sequence network parts bounded with delta transformer windings and isolated from the *** estimator can handle both phasor and complex power *** with the standard complex-variable unbalanced state estimator,it achieves better numerical stability and.a.speed-up of around three times using a sequential implementation and five times using parallel execution.

关键词： delta-windings Fortescue transformation iterative algorithms least-squares approximation parallel algorithm perturbation methods ill-conditioning state estimation symmetrical components

d614G and SARS-CoV-2 replication fitness

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2021年第4期6卷 1073-1074页

作者： Kathleen d.Engelman Alan N.Engelman MassBiologics University of Massachusetts Medical SchoolBostonMAUSA department of Cancer Immunology and Virology Dana-Farber Cancer InstituteBostonMAUSA department of Medicine Harvard Medical SchoolBostonMAUSA

Molecular determinants of SARS-CoV-2 replication fitness and sensitivity to neutralization via the humoral immune response critically inform efforts to combat the COVId-19 *** published recently by Plante et *** Natur... 详细信息

关键词： al. processes. d61