检索结果-南通市图书馆

Adaptive data fusion framework for modeling of non-uniform aerodynamic data

Chinese Journal of Aeronautics 2023年第7期36卷 316-336页

作者： Vinh PHAM Maxim TYAN Tuan Anh NGUYeN Chi-Ho l.e l.V.Thang NGUYeN jae-woo l.e Department of Aerospace Information engineering Konkuk UniversitySeoul 05029Republic of Korea Konkuk Aerospace Design-Airworthiness Institute Konkuk UniversitySeoul 05029Republic of Korea

Multi-fidelity Data Fusion(MDF)frameworks have emerged as a prominent approach to producing economical but accurate surrogate models for aerodynamic data modeling by integrating data with different fidelity ***,most existing MDF frameworks assume a uniform data structure between sampling data sources;thus,producing an accurate solution at the required level,for cases of non-uniform data structures is *** address this chal.enge,an Adaptive Multi-fidelity Data Fusion(AMDF)framework is proposed to produce a composite surrogate model which can efficiently model multi-fidelity data featuring non-uniform ***,the design space of the input data with non-uniform data structures is decomposed into subdomains containing simplified ***,different MDF frameworks and a rule-based selection process are adopted to construct multiple local models for the subdomain *** the other hand,the enhanced local Fidelity Modeling(elFM)method is proposed to combine the generated local models into a unique and continuous global ***,the resulting model inherits the features of local models and approximates a complete database for the whole design *** validation of the proposed framework is performed to demonstrate its approximation capabilities in(A)four multi-dimensional analytical problems and(B)a practical.engineering case study of constructing an F16C fighter aircraft’s aerodynamic *** comparisons of the generated models using the proposed AMDF framework and conventional MDF approaches using a single global modeling algorithm are performed to reveal the adaptability of the proposed approach for fusing multi-fidelity data featuring non-uniform ***,the results indicated that the proposed framework outperforms the state-of-the-art MDF approach in the cases of non-uniform data.

关键词： Aerodynamic modeling Data fusion Diverse data structure Multi-fidelity data Multi-fidelity surrogate modeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synergistic effect of Core/Shell‑Structured Composite Fibers:efficient Recovery of Rare‑earth elements from Spent NdFeB Permanent Magnets

引用

Advanced Fiber Materials 2024年第6期6卷 1729-1745页

作者： Youngkyun Jung Yun l.e Su‑Jin Yoon jae‑woo Choi Center for Water Cycle Research Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Department of Chemical and Biological.engineering Korea UniversitySeoul 02841Republic of Korea Department of energy and environment Technology KIST SchoolKorea University of Science and TechnologySeoul 02792Republic of Korea

NdFeB magnets are third-generation permanent magnets that are employed as indispensable components in various ***,rare-earth elements(Rees)such as Dy and Nd must be efficiently recovered from end-of-life magnets to enable resource circulation and reinforce unstable supply *** that end,this paper reports synergistically performing core/shell-structured composite fibers(CSCFs)containing sodium polyacrylate and nanoporous zeolitic imidazolate framework-8(NPZIF-8)nanocrystals as a readily recoverable adsorbent with an exceptional Ree-adsorbing *** CSCF core forms an NPZIF-8 nanocrystal shell on the fiber surface as well as draws Rees using its dense sodium carboxylate groups into the NPZIF-8 nanocrystal lattice with high specific surface *** CSCFs exhibit significantly higher maximum adsorption capacities(468.60 and 435.13 mg·g-1)and kinetic rate constants(2.02 and 1.92 min-1)for the Nd3+and Dy3+Rees than those of previously reported Ree ***,the simple application of the CSCFs to an adsorption reactor considerably mitigates the adsorbent-shape-induced pressure drop,thereby directly infl.encing the energy efficiency of the ***,the high Ree-recovery ability,tractability,and recyclability of the CSCFs offers a pragmatic pathway to achieving cost-effective Ree ***,this study provides new insights into designing synergistically performing core/shell architectures for feasible Ree recovery.

关键词： Core/shell structures Fibrous adsorbents Synergistic adsorption Metal resource recovery Pressure drop Rare-earth elements

来源：

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

Tailoring uniform γ-MnO2 nanosheets on highly conductive three-dimensional current col.ectors for high-performance supercapacitor electrodes

引用

Nano Research 2015年第3期8卷 990-1004页

作者： Sangbaek Park Hyun-woo Shim Chan woo l.e Hee Jo Song Ik jae Park jae-Chan Kim Kug Sun Hong Dong-Wan Kim Department of Materials Science and engineering Seoul National University Seou1151-744 R. O. Korea School of Civil Environmental and Architectural Engineering Korea University Seou1136-713 R. O. Korea

Recent efforts have focused on the fabrication and application of three- dimensional （3-D） nanoarchitecture electrodes, which can exhibit excel.ent electrochemical performance. Herein, a novel strategy towards the design and synthesis of size- and thickness-tunable two-dimensional （2-D） MnO2 nanosheets on highly conductive one-dimensional （l-D） backbone arrays has been developed via a facile, one-step enhanced chemical bath deposition （eCBD） method at a low temperature （-50 ℃）. Inclusion of an oxidizing agent, BrO3-, in the solution was crucial in controlling the heterogeneous nucleation and growth of the nanosheets, and in inducing the formation of the tailored and uniformly arranged nanosheet arrays. We fabricated supercapacitor devices based on 3-D MnO2 nanosheets with conductive Sb-doped SnO2 nanobelts as the backbone. They achieved a specific capacitance of 162 F·g-1 at an extremely high current density of 20 A·g% and good cycling stability that shows a capacitance retention of -92% of its initial val.e, along with a coulombic efficiency of almost 100% after 5,000 cycles in an aqueous solution of I M Na2SO4. The results were attributed to the unique hierarchical structures, which provided a short diffusion path of electrolyte ions by means of the 2-D sheets and direct electrical connections to the current col.ector by 1-D arrays as well as the prevention of aggregation by virtue of the well-aligned 3-D structure.

关键词： nanosheets manganese oxide chemical bath deposition SnO2 nanobelts supercapacitor

来源：

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

Development of genome engineering technologies in cattle: from random to specific

引用

Journal of Animal Science and Biotechnology 2018年第2期9卷 285-293页

作者： Soo-Young Yum Ki-Young Youn woo-jae Choi Goo Jang Department of Veterinary Clinical Science College of Veterinary Medicine and the Research Institute of Veterinary Science Seoul National University Farm Animal Clinical Training and Research Center Institute of Green Bio Science Technology Seoul National University emergence Center for Food-Medicine Personalized Therapy System Advanced Institutes of Convergence Technology Seoul National University Col.ege of Veterinary Medicine Seoul National University

The production of transgenic farm animals(e.g., cattle) via genome engineering for the gain or loss of gene functions is an important undertaking. In the initial stages of genome engineering, DNA micro-injection into one-cell stage embryos(zygotes) followed by embryo transfer into a recipient was performed because of the ease of the ***, as this approach resul.ed in severe mosaicism and has a low efficiency, it is not typically employed in the cattle as priority, unlike in mice. To overcome the above issue with micro-injection in cattle, somatic cell nuclear transfer(SCNT) was introduced and successfully used to produce cloned livestock. The application of SCNT for the production of transgenic livestock represents a significant advancement, but its development speed is relatively slow because of abnormal reprogramming and low gene targeting efficiency. Recent genome editing technologies(e.g.,ZFN, TAleN, and CRISPR-Cas9) have been rapidly adapted for applications in cattle and great results have been achieved in several fields such as disease models and bioreactors. In the future, genome engineering technologies wil accelerate our understanding of genetic traits in bovine and wil be readily adapted for bio-medical applications in cattle.

关键词： Cattle CRISPR-Cas9 Genome engineering technologies Transgenesis Transposon

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

electrical and Corrosion Properties of Titanium Aluminum Nitride Thin Films Prepared by Plasma-enhanced Atomic layer Deposition

引用

Journal of Materials Science & Technology 2017年第3期33卷 295-299页

作者： eun-Young Yun woo-jae l.e Qi Min Wang Se-Hun Kwon School of Materials Science and engineering Pusan National University School of electromechanical.engineering Guangdong University of Technology

Titanium-aluminum-nitride（TiAlN） films were grown by plasma-enhanced atomic layer deposition（PeAlD）on 316 l stainless steel at a deposition temperature of 200 °C. A supercycle, consisting of one AlN and ten TiN subcycles, was used to prepare TiAlN films with a chemical composition of Ti（0.25）Al（0.25）N（0.50）. The addition of AlN to TiN resul.ed in an increased electrical resistivity of TiAlN films of 2800 μΩ cm, compared with 475 μΩ cm of TiN films, mainly due to the high electrical resistivity of AlN and the amorphous structure of TiAlN. However, potentiostatic polarization measurements showed that amorphous TiAlN films exhibited excel.ent corrosion resistance with a corrosion current density of 0.12 μA/cm^2, about three times higher than that of TiN films, and about 12.5 times higher than that of 316 l stainless steel.

关键词： Titanium-aluminum nitride Plasma-enhanced atomic layer deposition Corrosion protection Ternary transition metal nitrides

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modeling hot deformation behavior of low-cost Ti-2Al-9.2Mo-2Fe beta titanium alloy using a deep neural network

引用

Journal of Materials Science & Technology 2019年第5期35卷 907-916页

作者： Cheng-lin li P.l.Narayana N.S.Reddy Seong-woo Choi Jong-Taek Yeom jae-Keun Hong Chan Hee Park Advanced Metals Division Korea Institute of Materials Science Changwon 51508 Republic of Korea School of Materials Science and engineering Gyeongsang National University Jinju 52828 Republic of Korea

Ti-2 Al-9.2 Mo-2 Fe is a low-cost β titanium alloy with well-balanced strength and ductility, but hot working of this alloy is complex and unfamiliar. Understanding the nonlinear relationships among the strain,strain rate, temperature, and flow stress of this alloy is essential to optimize the hot working *** this study, a deep neural network(DNN) model was developed to correlate flow stress with a wide range of strains(0.025–0.6), strain rates(0.01–10 s^-1) and temperatures(750–1000℃). The model, which was tested with 96 unseen datasets, showed better performance than existing models, with a correlation coefficient of 0.999. The processing map constructed using the DNN model was effective in predicting the microstructural.evolution of the alloy. Moreover, it led to the optimization of hot-working conditions to avoid the formation of brittle precipitates(temperatures of 820–1000℃ and strain rates of 0.01-0.1 s^-1).

关键词： Deep neural networks Back propagation Processing map Recrystallization Beta titanium

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preparation of human decellularized peripheral nerve allograft using amphoteric detergent and nuclease

引用

Neural Regeneration Research 2021年第9期16卷 1890-1896页

作者： Joo-Yul Bae Suk Young Park Young Ho Shin Shin woo Choi jae Kwang Kim Department of Orthopedic Surgery University of Ulsan College of MedicineGangneung Asan HospitalGangneung-siKorea Department of Orthopedic Surgery University of Ulsan College of MedicineAsan Medical CenterSeoulKorea

Animal studies have shown that amphoteric detergent and nuclease(DNase I and ribonuclease A) is the most reliable decellularization method of the peripheral nerve. However, the optimal combination of chemical reagents for decellularization of human nerve allograft needs further investigation. To find the optimal protocol to remove the immunogenic cellular components of the nerve tissue and preserve the basal lamina and extracellular matrix and whether the optimal protocol can be appl.ed to larger-diameter human peripheral nerves, in this study, we decellularized the median and sural nerves from the cadavers with two different methods: nonionic and anionic detergents(Triton X-100 and sodium deoxycholate) and amphoteric detergent and nuclease(3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate(CHAPS), deoxyribonuclease I, and ribonuclease A). All cellular components were successfully removed from the median and sural nerves by amphoteric detergent and nuclease. Not all cellular components were removed from the median nerve by nonionic and anionic detergent. Both median and sural nerves treated with amphoteric detergent and nuclease maintained a completely intact extracellular matrix. Treatment with nonionic and anionic detergent decreased collagen content in both median and sural nerves, while the amphoteric detergent and nuclease treatment did not reduce collagen content. In addition, a contact cytotoxicity assay revealed that the nerves decellularized by amphoteric detergent and nuclease was biocompatible. Strength failure testing demonstrated that the biomechanical properties of nerves decellularized with amphoteric detergent and nuclease were comparable to those of fresh controls. Decellularization with amphoteric detergent and nuclease better remove cellular components and better preserve extracellular matrix than decellularization with nonionic and anionic detergents, even in large-diameter human peripheral nerves. In Korea, cadaveric studies are not yet l

关键词： median nerve sural nerve nuclease detergent human decellularized nerve graft

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Self‑Regenerable Fiber Sloughing Its Heavy Metal Skin for Ultrahigh Separation Capability

引用

Advanced Fiber Materials 2023年第6期5卷 2127-2142页

作者： Youngkyun Jung Ji Su Park Kyung‑Won Jung Young Gun Ko jae‑woo Choi Center for Water Cycle Research Korea Institute of Science and TechnologySeoul 02792Republic of Korea Center for Bionics Korea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Chemical.engineering and Materials Science Sangmyung UniversitySeoul 03016Republic of Korea Division of energy&environment Technology KIST SchoolKorea University of Science and Technology(UST)Seoul 02792Republic of Korea

Developing efficient separation materials for recovering metal resources from aqueous environments is crucial for the sustainable water–food–energy nexus,which addresses the interdependence between energy production,water production,and energy *** material-based separation processes have demonstrated outstanding ***,electric energy and chemicals are used to frequently replace the separation materials used in such processes owing to their short life *** study presents a methodology for designing the self-regenerable fiber(SRF)according to the types of metals through a self-regeneration *** SRF can semi-permanently recover the metal resources from water through a repetitive adsorption–crystallization–detachment process of metal ions on its *** ionic metal resources are adsorbed and crystallized with the counter-anions on the SRF ***,the metal crystals are self-detached from the SRF surface by the collision between the crystals and curvature and non-sticky surface of the ***,a module containing the SRF maintains its metal recovery capability even during continuous injection of the metal solution without its *** findings highlight the significance of interfacial.engineering and further guide the rational design of energy/environmentally friendly resource recovery modules.

关键词： Self-regeneration model Self-regenerable fiber Semi-permanent adsorption capability Metal crystal growth-detachment

来源：

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

Anti-scarring effects of butaprost on human subconjunctival Tenon's fibroblasts

引用

International Journal of Ophthalmology(english edition) 2017年第7期10卷 1028-1033页

作者： Jong Hoon Shin Je Hyun Seo jae Ho Jung Tae woo Kim Department of Ophthalmology Pusan National University Hospital Department of Ophthalmology Pusan National University Yangsan Hospital Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital Department of Ophthalmology Seoul National University College of MedicineSeoul National University Bundang Hospital

AIM： To investigate the toxicity of the e-prostanoid 2（eP2） receptor agonist, butaprost against human subconjunctival（Tenon＇s capsule） fibroblasts, and to determine the underlying mechanism. MeTHODS： We isolated Tenon＇s fibroblasts from the subconjunctival area of healthy subjects and evaluated the types of eP receptors expressed using quantitative realtime reverse transcription polymerase chain reaction（RTPCR）. The toxicity of butaprost against the fibroblasts was evaluated using methyl thiazolyl tetrazolium and lactic dehydrogenase assays. The inhibition of conjunctival fibroblast proliferation by butaprost was assessed by measuring α-actin levels. The underlying mechanism was assessed by measuring intracellular cyclic adenosine monophosphate（c AMP） levels. Intergroup differences were statistically analyzed using an independent t-test. Densitometry of the Western blot bands was performed using the Image J software. ReSUlTS： Quantitative real-time RT-PCR revealed that the fibroblast eP2 receptor levels were higher than those of the other eP receptors. Butaprost did not show toxicity against Tenon＇s tissue, but inhibited conjunctival fibroblast proliferation by reducing collagen synthesis. eP2 receptor activation enhanced the c AMP cascade, which might be an important mechanism underlying this ***： Butaprost effectively reduces the subconjunctival scarring response. Given the significanceof wound healing modulation in blebs, butaprost＇s inhibitory effect on subconjunctival Tenon＇s fibroblasts may be beneficial in managing postoperative scarring in glaucoma surgery.

关键词： butaprost Tenon's capsule trabeculectomy fibroblasts

来源：

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

Photocatalysts for degradation of dyes in industrial.effl.ents:Opportunities and chal.enges

引用

Nano Research 2019年第5期12卷 955-972页

作者： Hassan Anwer Asad Mahmood Jechan l.e Ki-Hyun Kim jae-woo Park Alex C.K.Yip Department of Civil and environmental.engineering Hanyang University222 Wangsimni-roSeoul 04763Republic of Korea Department of environmental and Safety engineering Ajou UniversitySuwon 16499Republic of Korea Department of Chemical and Process engineering University of CanterburyChristchurch 8041New Zealand

Discharging dye contaminants into water is a major concern around the *** a variety of methods to treat dye-contaminated water,photocatalytic degradation has gained attention as a tool for treating the colored ***,we review the recent advancements in photocatalysis for dye degradation in industrial.effl.ents by categorizing photocatalyst materials into three *** generation photocatalysts are composed of single-component materials (e.g.,TiO2,ZnO,and CdS),while second generation photocatalysts are composed of multiple components in a suspension (e.g.,WO3/NiWO4,BiOl/ZnTiOa,and C3N4/Ag3VO4).Photocatalysts immobilized on solid substrates are regarded as third generation materials (e.g.,FTO/WO3-ZnO,Steel/TiO2-WO3,and Glass/P-TiO2).Photocatalytic degradation mechanisms,factors affecting the dye degradation,and the lesser-debated uncertainties related to the photocatalysis are also discussed to offer better insights into environmental ***,quantum yields of different photocatalysts are calculated,and a performance evaluation method is proposed to compare photocatalyst systems for dye ***,we discuss the present limitations of photocatalytic dye degradation for field applications and the future of the technology.

关键词： photocatalyst dye wastewater degradation mechanism performance evaluation

来源：

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

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：