检索结果-内蒙古大学图书馆

2022 International Conference on Physics of Reactors, PHYSOR 2022

作者： Furlong, Aidan Shriver, Forrest Watson, Justin Nuclear Engineering Program Deptartment of Materials Science Engineering University of Florida 549 Gale Lemerand Drive PO BOX 116400 GainesvilleFl32611 United States Sentinel Devices LLC Sentinel Devices LLC KnoxvilleTN37932 United States

ISBN: (纸本)9780894487873

The use of neural networks to predict high-fidelity neutronics features is becoming an increasingly attractive area of investigation, as a way to reduce the computational resources needed for simulations while maintaining the high resolution of the latent simulations. Previous work provided a novel network architecture, LatticeNet, as an approach to use neural networks to predict high-resolution pin power predictions equivalent to what would be produced by a high-fidelity code without significant computational cost. This paper further tests this approach by applying it in scenarios with varying fuel pin sizes, and shows that it can be successfully used to achieve high accuracy in predictions, even in regions which the training data did not explicitly represent. © 2022 Proceedings of the International Conference on Physics of Reactors, PHYSOR 2022. All Rights Reserved.

关键词： Deep Learning Machine Learning Neutronics Pressurized Water Reactor

来源：评论

学校读者我要写书评

暂无评论

Effects of silver doping in the structural and optical properties of hematite (α-fe2o3) synthesized via chemical precipitation method 11th

Effects of silver doping in the structural and optical prope...

引用

11th International Conference on Key engineering materials, ICKEM 2021

作者： Tan, Aldrin A. Lacuesta, Aldwin Christian T. Gili, Mon Bryan Z. Cervera, Rinlee Butch M. Materials Science and Engineering Program College of Science University of the Philippines Diliman Quezon City1101 Philippines Department of Mining Metallurgical and Materials Engineering University of the Philippines Diliman Quezon City1101 Philippines Philippine Nuclear Research Institute Department of Science and Technology Philippines

ISBN: (纸本)9783035738872

Hematite (α-Fe2O3) is a low-cost n-type semiconductor with significant absorption of visible light owing to its low bandgap energy of 2.1 eV. The wide applications of hematite in renewable energy and environmental remediation continuously entice more studies. However, the low absorbance of solar energy in the UV-range significantly limits the efficiency of many photocatalytic materials. In this study, we tried to dope α-Fe2O3 with silver via chemical precipitation method to lower the bandgap energy and widen its absorbance. The effects of doping hematite with Ag on the structure, morphology, elemental composition, and optical absorbance were determined by characterizing the samples via X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, and UV-Vis spectroscopy, respectively. It was observed from the XRD patterns that the α-Fe2O3 crystallizes in hexagonal structure with lattice parameters a = 5.0380 Å and c = 13.7720 Å for the pure α-Fe2O3. Doping with 0.1M and 0.2M AgNO3 leads to a greater value of the lattice parameters indicating successful doping. SEM images show that the hematite formed was composed of particles with irregular shapes that have sizes in the range 0.865-0.883 μm. Excess silver particles were deposited on the surface of hematite. UV-Vis spectra show that there is a red-shift in the absorption band of the Ag-doped hematite. A notable decrease in the bandgap energy of the undoped α-Fe2O3 was observed from ~2.2eV to ~2.0eV with the increase in the amount of the dopant in the hematite as determined using Tauc’s plot. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Hematite

来源：评论

学校读者我要写书评

暂无评论

Stiffness of In-Situ Formed Interleaving Polymeric Nanofiber-Epoxy Nanocomposites

引用

Open Journal of Composite materials 2024年第4期14卷 147-157页

作者： Farzin Javanshour Kaan Bilge Abdul Bari Abdul Raheman Melih Papila VTT Technical Research Centre of Finland Ltd. Tampere Finland Insight Technology Development and Consultancy Kozyata Istanbul Trkiye Materials Science & Nano Engineering Program Sabanci University Istanbul Trkiye Department of Mechanical Engineering California State University Northridge Northridge USA

This study proposes a facile, but precise method to back-calculate the effective modulus of nanocomposite interleaving plies. Adaptation of a conventional dry-reinforcement resin film infusion (RFI) approach allows interleaving neat epoxy layers (NE) with the epoxy-infused nanofibrous plies (XE) of constant thickness. The final cured nanocomposite laminate thus has the form (NE/XE)n, where “n” denotes the number of the repeats and enables clear distinction of the nanocomposite interlayers through the thickness. Mechanical testing of neat epoxy and laminated nanocomposite specimens can be coupled with the classical lamination theory for back-calculating in-plane elastic modulus of the individual epoxy-infused nanofibrous plies (EXE). Finite element analysis (FEA) and testing the laminated nanocomposite subject to flexural loading (3-point bending) are proposed to validate the analytically back-calculated EXE. It is shown that the FEA prediction incorporating EXE and testing for flexural modulus of (NE/XE)20 laminated nanocomposites correlate well and the results are within 5%. This finding suggests that the back-calculation scheme reported herein would be attractive for accurately determining the properties of an individual nanocomposite building block layer. The proposed framework is beneficial for modelling laminated structural composites incorporating XE-like nanocomposite interlayers.

关键词： Lamination Theory Resin Film Infusion Electrospun Nanofibers Mechanical Properties

来源：评论

学校读者我要写书评

暂无评论

Bone quality in zebrafish vertebrae improves after alendronate administration in a glucocorticoid-induced osteoporosis model

引用

Journal of the Mechanical Behavior of Biomedical materials 2024年 154卷 106521页

作者： Bohns, Fabio Rocha Akhtar, Riaz Chuang, Yung-Jen Chen, Po-Yu Department of Materials Science and Engineering National Tsing Hua University Hsinchu Taiwan Department of Mechanical Materials and Aerospace Engineering University of Liverpool Liverpool United Kingdom International Intercollegiate Ph.D. Program National Tsing Hua University Hsinchu Taiwan School of Medicine National Tsing Hua University Hsinchu Taiwan

Glucocorticoid-induced osteoporosis (GIOP) changes the microarchitecture of bones and often leads to the reduction of bone-mineral density (BMD) and increased fracture rates. Zebrafish has been used as an alternative model for GIOP, however, the interaction of GIOP, and its treatment, with zebrafish bone morphometrics and mechanical properties, remains a challenge. Thus, this study aimed to evaluate the effects of prednisolone and alendronate on the properties of zebrafish vertebrae. Adult 7-month-old zebrafish were distributed into four groups: control (CTRL), prednisolone-only (PN), alendronate-only (ALN), and the sequential use of both medicines (PN + ALN). Fish skeletons were scanned via micro-tomography (n = 3) to obtain vertebra morphometrics (e.g., BMD). Bone morphology was assessed using scanning electron microscopy (n = 4) and the biomechanical behaviour with nanoindentation technique (n = 3). The BMD decreased in PN (426.08 ± 18.58 mg/cm3) and ALN (398.23 ± 10.20 mg/cm3) groups compared to the CTRL (490.43 ± 41.96 mg/cm3) (p 3) (p > 0.05). The bone layered structures remain preserved in all groups. The vertebrae of the groups that received ALN and PN + ALN, displayed higher modulus of elasticity (27.27 ± 1.59 GPa and 25.68 ± 2.07 GPa, respectively) than the CTRL (22.74 ± 1.60 GP) (p © 2024 Elsevier Ltd

关键词： Bone

来源：评论

学校读者我要写书评

暂无评论

Study of Silicon Nitride Etched by Cyclic Atomic Layer Etching

Study of Silicon Nitride Etched by Cyclic Atomic Layer Etchi...

引用

2022 IET International Conference on engineering Technologies and Applications, IET-ICETA 2022

作者： Yang, Tsung-Ying Kuo, Mei-Yan Chang, Edward-Yi National Yang Ming Chiao Tung University International College of Semiconductor Technology Hsinchu Taiwan National Yang Ming Chiao Tung University Graduate Program for Nanotechnology Department of Materials Science and Engineering Hsinchu Taiwan

ISBN: (数字)9781665491389

ISBN: (纸本)9781665491389

In this work, cyclic atomic layer etching (ALE) was used to etch silicon nitride (SiN) to find its working conditions. To understand the mechanism behind it, we tested the ALE adsorption effect and the removal effect of the ALE working window. Also, we made a comparison with the etching RMS of normal etching ICP and showed that ALE has better etch flatness. This demonstrates that ALE has a potential ability to become a reliable and stable etching technology in the future. © 2022 IEEE.

关键词： Silicon nitride

来源：评论

学校读者我要写书评

暂无评论

Quaternary ammonium-functionalized polysilsesquioxanes for antifogging coating

RSC Applied Polymers

引用

RSC Applied Polymers 2024年第1期3卷 92-96页

作者： Hamada, Takashi Sugimoto, Tetsuya Tanaka, Arata Maeda, Tetsuya Katsura, Daiji Koga, Hiroyuki Ohshita, Joji Collaborative Research Laboratory Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan Quantum Materials and Applications Research Center Takasaki Institute for Advanced Quantum Science National Institutes for Quantum Science and Technology (QST) 1233 Watanuki-machi Takasaki Gunma 370-1292 Japan Technical Research Center Mazda Motor Corporation Aki-gun Hiroshima 730-8670 Japan Smart Innovation Program Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan Division of Materials Model-Based Research Digital Monozukuri (Manufacturing) Education and Research Center Hiroshima University 3-10-32 Kagamiyama Higashi-Hiroshima Hiroshima 739-0046 Japan

Aiming to develop antifogging materials with enhanced antifogging properties and scratch resistance, polysilsesquioxane films containing quaternary ammonium groups were prepared via a sol-gel reaction and quaternization. Owing to their high water uptake, scratch hardness, and transparency, the prepared quaternary ammonium-functionalized polysilsesquioxane films are promising for application in antifogging coatings. © 2025 RSC.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Revisiting a hidden order at an ferromagnet/antiferromagnet interface and its switching dynamics

Revisiting a hidden order at an ferromagnet/antiferromagnet ...

引用

Magnetic Conference - Short Papers (INTERMAG Short Papers), IEEE International

作者： Chao-Yao Yang Sheng-Huai Chen Chih-Huang Lai Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan Undergraduate Degree Program of Systems Engineering and Technology National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Materials Science and Engineering National Tsing Hua University Hsinchu Taiwan

Study on the exchange bias (H ex ) switching in a ferromagnet (FM)/antiferromagnet (AFM) bilayer driven by the spin-orbit torque (SOT) has been an explicit research field and current focus has been devoted to determining the approaches to drive the H ex switching along with specific SOT applications. H ex is magnetically dominant but only reveals the partial facet of IrMn, which is only responsible for the ferromagnetic component at the interface of AFM. Therefore, the complete facet of AFM and its interaction with SOT at an FM/AFM interface is still not fully uncovered. This research reports an SOT-driven hidden order transition behind H ex in a heavy metal (Pt)/FM (Co)/AFM (IrMn) trilayer along with the issue of switching activity at Co/IrMn interface. The exchange coupling across Co/IrMn interface allows a long-range spin order in the form of an exchange-spring configuration, yielding two kinds of order in IrMn: a canting-induced ferromagnetic order for hosting H ex and a hidden Néel order for preserving the antiferromagnetic nature. The former appears to be strongly coupled to the magnetization state of Co during the SOT switching, so it can be reversibly switched with Co on the H ex switching. On the contrary, the hidden Néel order transition re-orientated to the current direction appears to be irreversibly driven by SOT and independent on the current polarity, which can reflect on the magnetoresistance (MR) measurement and X-ray magnetic linear dichroism (XMLD) spectroscopy. Finally, a micromagnetic simulation reveals the dynamic IrMn spins are mainly based on a canting type interface instead of an uncompensated type via an exchange-spring coupling with Co.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Eliminating the Bias from Liquid-Junction Potential for Charge-Transfer Analysis

Eliminating the Bias from Liquid-Junction Potential for Char...

引用

9th Symposium on Organic Semiconductor materials, Devices, and Processing, held at the 245th ECS Meeting

作者： O’Mari, J.O. Vullev, V.I. Department of Bioengineering University of California RiversideCA92521 United States Department of Chemistry University of California RiversideCA92521 United States Department of Biochemistry University of California RiversideCA92521 United States Materials Science and Engineering Program University of California RiversideCA92521 United States

ISBN: (纸本)9781623326784

Liquid junctions in electrochemical cells introduce potentials that can strongly affect measurements. Such liquid-junction potential errors can exceed 100 mV. In the analysis of charge-transfer thermodynamics, error differences of 100 mV can have substantial impact on the interpretations. Discussion herein outlines an approach for eliminating the effects of liquid-junction potentials from charge-transfer analysis. © The Electrochemical Society.

关键词： Charge transfer

来源：评论

学校读者我要写书评

暂无评论

Review Integration of smartphone technology and artificial intelligence for advanced ophthalmic care:A systematic review

引用

Advances in Ophthalmology Practice and Research 2024年第3期4卷 120-127页

作者： Kai Jin Yingyu Li Hongkang Wu Yih Chung Tham Victor Koh Yitian Zhao Ryo Kawasaki Andrzej Grzybowski Juan Ye Eye Center The Second Affiliated Hospital of Zhejiang University School of MedicineZhejiang Provincial Key Laboratory of OphthalmologyZhejiang Provincial Clinical Research Center for Eye DiseasesZhejiang Provincial Engineering Institute on Eye DiseasesHangzhouChina Centre for Innovation and Precision Eye Health National University of SingaporeSingapore Department of Ophthalmology National University of SingaporeSingapore Singapore Eye Research Institute Singapore National Eye CentreSingapore Ophthalmology and Visual Science Academic Clinical Program Duke-NUS Medical SchoolSingapore Cixi Institute of Biomedical Engineering Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboChina Ningbo Eye Hospital NingboChina Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboChina Zhejiang Engineering Research Center for Biomedical Materials Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboChina Division of Public Health Department of Social MedicineGraduate School of MedicineOsaka UniversityOsakaJapan Artificial Intelligence Center for Medical Research and Application Osaka University HospitalOsakaJapan Institute for Research in Ophthalmology Foundation for Ophthalmology DevelopmentPoznanPoland

Background:The convergence of smartphone technology and artificial intelligence(AI)has revolutionized the landscape of ophthalmic care,offering unprecedented opportunities for diagnosis,monitoring,and management of ocular ***,there is a lack of systematic studies on discussing the integration of smart-phone and AI in this *** text:This review includes 52 studies,and explores the integration of smartphones and AI in ophthalmology,delineating its collective impact on screening methodologies,disease detection,telemedicine initiatives,and patient *** collective findings from the curated studies indicate promising performance of the smartphone-based AI screening for various ocular diseases which encompass major retinal diseases,glaucoma,cataract,visual impairment in children and ocular surface ***,the utilization of smartphone-based imaging modalities,coupled with AI algorithms,is able to provide timely,efficient and cost-effective screening for ocular *** modality can also facilitate patient self-monitoring,remote patient monitoring and enhancing accessibility to eye care services,particularly in underserved *** involving data pri-vacy,algorithm validation,regulatory frameworks and issues of trust are still need to be ***,evaluation on real-world implementation is imperative as well,and real-world prospective studies are currently ***:Smartphone ocular imaging merged with AI enables earlier,precise diagnoses,personalized treat-ments,and enhanced service accessibility in eye *** is crucial to navigate ethical and data security challenges while responsibly leveraging these innovations,promising a potential revolution in care access and global eye health equity.

关键词： Artificial intelligence Smartphone imaging Ophthalmology Telemedicine Ocular disease management

来源：评论

学校读者我要写书评

暂无评论

Exploring nonlinear Rashba effect and spin Hall conductivity in Janus MXenes W2COX (X=S, Se, Te)

引用

Physical Review B 2024年第24期110卷 245421-245421页

作者： Arjyama Bordoloi Sobhit Singh Department of Mechanical Engineering University of Rochester Rochester New York 14627 USA Materials Science Program University of Rochester Rochester New York 14627 USA Center for Coherence and Quantum Optics University of Rochester Rochester New York 14627 USA

Rashba spin-orbit coupling (RSOC) facilitates spin manipulation without relying on an external magnetic field, opening up exciting possibilities for advanced spintronic devices. In this paper, we examine the effects of crystal momentum (k) nonlinearity and anisotropy on the conventional Rashba effect, with a particular focus on their impact on the spin Hall conductivity (SHC) in a newly predicted family of 2D Janus materials, W2COX (X=S, Se, Te). Using first-principles density functional theory calculations, we confirm the dynamical and mechanical stability of the studied 2D materials. Strikingly, this materials family exhibits pronounced nonlinear Rashba spin splitting at the Γ point of Brillouin zone near the Fermi level, which cannot be adequately described by the linear-k Rashba model. Therefore, third-order momentum contributions (k3) must be incorporated into the Rashba Hamiltonian. Our analysis reveals that among the studied systems, W2COS exhibits the highest k3 contribution of −45.9 eV Å3, despite having the lowest linear Rashba constant. A detailed analysis of electronic structure reveals topologically nontrivial behavior in these 2D materials, yielding sizable SHC that is primarily governed by the nonlinear Rashba effect. Notably, these materials also exhibit large spin Hall angle (0.018–2.5 at EF), which is comparable to that of in bulk topological insulators like Bi2Se3 and Bi2Te3, and surpassing those in narrow bandgap bulk semiconductors GeTe and SnTe, as well as heavy metals such as Pt. Sizable SHC, large spin Hall angles, and the ability to tune SHC via electric fields without altering the topological properties, rooted in the crystal field splitting, underscore the potential of these materials for spintronic applications.

关键词： Topological insulators

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：