检索结果-南通市图书馆

Two-dimensional perovskite SrNbO_(2) N with Zr doping for accelerating photoelectrochemical water splitting

Journal of Materials Science & Technology 2023年第11期142卷 176-184页

作者： Thanh tam Thi tran Van-Huy Trinh Jeongsuk Seo Department of Chemistry College of Natural SciencesChonnam National University77 Yongbong-roBuk-guGwangju 61186South Korea

The superior ability of perovskite-type SrNbO_(2) N to absorb intensive visible light makes it a potential semiconductor to produce hydrogen and oxygen by photoelectrochemical(PEC)water splitting under *** surface morphologies,such as shape and structure,of the oxynitride strongly affect its photoactivity,although the mechanism has been hardly ***,we report a two-dimensional(2D)porous SrNbO_(2) N plate with Zr doping,nitrided from layered perovskite Sr_(5)Nb_(4)O_(15) and also its largely enhanced PEC water splitting ***^(4+)was doped in Sr_(5)Nb_(4)O_(15) during flux-assisted calcination using KCl,producing 2D-type truncated-octahedral Sr_(5)Nb_(4)O_(15):Zr plates approximately 50 nm in *** nitridation completely transformed Sr_(5)Nb_(4)O_(15):Zr to 2D single-crystalline SrNbO_(2) N:Zr with a large surface area,which was subsequently used to fabricate a thin and uniform photoanode by the spin coating *** a result,the Co(OH)_(x)/SrNbO_(2) N:Zr/FTO photoanode capable of absorbing visible light of up to 680 nm exhibited an activity of 2.0 mA cm^(-2) at 1.23 V vs the reversible hydrogen electrode for water splitting under AM 1.5G simulated *** improvement in photoactivity mainly originated from the 2D surface morphology of SrNbO_(2) N:Zr,which is clearly distinguishable from 3D-type *** to electrochemical analyses,the 2D structure of SrNbO_(2) N:Zr boosted the separation and accelerated the transfer of charges photogenerated during the water splitting,thus driving the reaction ***,the result empirically demonstrates that controlling the surface morphology of SrNbO_(2) N is an effective strategy to suppress the recombination of charges and minimize their diffusion pathway,eventually enhancing the PEC activity.

关键词： Solar water splitting Water oxidation BaNbO_(2)N Doping engineering Flux-assisted calcination Spin coating

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

Sensitivity and inter-observer variability for capsule endoscopy image analysis in a cohort of novice readers

引用

World Journal of Gastroenterology 2006年第8期12卷 1249-1254页

作者： Gary C Chen Pedram Enayati tam tran Mary Lee-Henderson Clifford Quan Gareth Dulai Ian Arnott James Sul Rome Jutabha UCLA Center for Small Bowel Diseases UCLA Medical CenterLos AngelesCAUnited States Cedars-Sinai Medical CenterLos AngelesCAUnited States UCLA Center for Small Bowel Diseases UCLA Medical CenterLos AngelesCAUnited States David Geffen School of Medicine at UCLALos AngelesCAUnited States

AIM： To determine the performance of novice readers （4^th year medical students） for detecting capsule endoscopy findings. METHODS： Ten capsule endoscopy cases of small bowel lesions were administered to the readers. Gold standard findings were pre-defined by gastroenterologists. Ten gold standard ＂targets＂ were identified among the 10 cases. Readers were given a 30-min overview of Rapid Reader software and instructed to mark any potential areas of abnormalities. A software program was developed using SAS to analyze the thumbnailed findings. RESULTS： The overall sensitivity for detecting the gold standard findings was 80%. As a group, at least 5 out of 10 readers detected each gold standard finding per recording. All the gold standard targets were identified when the readers＇ results were combined. Incidental finding/false positive rate ranged between 8.2-59.8 per reader. CONCLUSION： A panel of medical students with minimal endoscopic experience can achieve high sensitivity in detecting lesions on capsule endoscopy. A group of novice readers can pre-screen recordings to thumbnail potential areas of small bowel lesions for further review. These thumbnails must be reviewed to determine the clinical relevance. Further studies are ongoing to assess other cohorts.

关键词： Capsule endoscopy analysis Small bowel lesions Novice readers Sensitivity

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

Tungsten-based nanocatalysts with different structures for visible light responsive photocatalytic degradation of bisphenol A

引用

Journal of Environmental Sciences 2024年第5期139卷 569-588页

作者： Hai Bang Truong Thi Thu Loan Doan Nguyen Tien Hoang Nguyen Van tam Minh Kim Nguyen Le Gia Trung Jin Seog Gwag Nguyen Tien tran Optical Materials Research Group Science and Technology Advanced InstituteVan Lang UniversityHo Chi Minh CityViet Nam Faculty of Applied Technology School of TechnologyVan Lang UniversityHo Chi Minh CityViet Nam The University of Da Nang University of Science and Technology54 Nguyen Luong BangDa NangViet Nam The University of Da Nang University of Science and Education459 Ton Duc Thang St.Lien ChieuDa Nang 550000Viet Nam Institute of Veterinary Science and Technology 31ha zoneTrau QuyGia LamHa Noi 12400Viet Nam Department of Physics Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea Center for Advanced Chemistry Institute of Research and DevelopmentDuy Tan University03 Quang TrungDa Nang 550000Viet Nam Faculty of Natural Sciences Duy Tan University03 Quang TrungDa Nang 550000Viet Nam

Environmental pollution,such as water contamination,is a critical issue that must be absolutely ***,three different morphologies of tungsten-based photocatalysts(WO_(3)nanorods,WO_(3)/WS_(2)nanobricks,WO_(3)/WS_(2)nanorods)are made using a simple hydrothermal method by changing the solvents(H_(2)O,DMF,aqueous HCl solution).The as-prepared nanocatalysts have excellent thermal stability,large porosity,and high *** results show all materials have good photocatalytic activity in aqueous media,with WO_(3)/WS_(2)nanorods(NRs)having the best activity in the photodegradation of bisphenol A(BPA)under visible-light *** may originate from increased migration of charge carriers and effective prevention of electron–hole recombination in WO_(3)/WS_(2)NRs,whereby this photocatalyst is able to generate more reactive·OH and·O_(2)^(–)species,leading to greater photocatalytic *** 99.6% of BPA is photodegraded within 60 min when using 1.5 g/L WO_(3)/WS_(2)NRs and 5.0 mg/L BPA at pH ***,the optimal conditions(pH,catalyst dosage,initial BPA concentration)for WO_(3)/WS_(2)NRs are also elaborately *** rod-like heterostructures are expressed as potential catalysts with excellent photostability,efficient reusability,and highly active effectivity in different types of *** particular,the removal efficiency of BPA by WO_(3)/WS_(2)NRs reduces by only 1.5% after five recycling runs and even reaches 89.1%in contaminated lake *** study provides promising insights for the nearly complete removal of BPA from wastewater or different water resources,which is advantageous to various applications in environmental remediation.

关键词： Photodegradation Bisphenol A Tungsten-based nanocatalyst Structure Nanorod

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

Two-Dimensional Stochastic Rotation Dynamics for Fluid Simulation

引用

Journal of Computer and Communications 2020年第2期8卷 27-38页

作者： Benoit Crespin Cong tam tran Manuella Cerbelaud Arnaud Videcoq Emmanuelle Darles University Limoges XLIM/ASALIUMR CNRSLimogesFrance Center for Mathematical Modeling SantiagoChile University Limoges IRCERUMR CNRSLimogesFrance University Poitiers XLIM/ASALIUMR CNRSPoitiersFrance.

This paper presents a new method for fluid simulation based on Stochastic Rotation Dynamics. The SRD model relies on a particle-based representation, but does not consider incompressibility. We generalize this model by introducing additional computation steps in order to handle this type of behavior, and also two-way coupling between the fluid and immersed objects. As a proof of concept, our method is implemented on the CPU to produce different types of simulations such as dam-break flood, falling droplets and mixing of two fluids.

关键词： Computer Graphics Fluid Simulation Particle Systems

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

Media coverage and public awareness on bioethics perception of emerging biomedical therapies

引用

Chinese Neurosurgical Journal 2017年第2期3卷 106-110页

作者： Sandra Acosta tam tran Jerel Mair Obi Okonkwo Brett Larose Cesar V.Borlongan Center of Excellence for Aging and Brain Repair Department of Neurosurgery and Brain Repair University of South Florida Morsani College of Medicine Tampa 33612 FL USA

Bioethics falls within the controversial ethical issues from the new advances and emerging technology in pre-clinical and clinical settings which inspired medical policy and *** purpose of this paper is to present an overview of ethical issues in stem cell-based therapies and to provide substantial argument for the need ofa Bioethics Research Consortium that will be tasked with convening a disciplined board of experts that will apply their principles to biomedical research,and emerging technology to further stipulate the socioeconomic influence of such entities and their therapeutic impact to *** too long ago,the successful therapeutic studies in Parkinson's disease and stroke were the highlights of bioethical *** precedent for study selection was based on public feedback,government reception,and scientific analyses developed by these spearhead *** all the negative publicity that researchers have been getting before,the whiplash from decades of fear and misunderstanding has hindered the progress of scientific *** is a huge figurative tug of war between what is making profit and what is needed to improve the health of afflicted patients *** management of education and funding may have actually hindered potential life changing cures and treatments from coming to *** propose the creation of a Bioethics Research Consortium that would determine how ethical matters are handled with careful consideration to public *** goal is to restructure drug development policy,and improve upon the ways in which research methods and funds are handled today.

关键词： Ethics Embryonic stem cells Adult stem cells transplantation

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

Systematic identification of gene function from genome-wide molecular networks in plants

Systematic identification of gene function from genome-wide ...

引用

第十三届全国植物基因组学大会

作者： Flavia Bossi Lee Chae Kate Dreher Taehyong Kim Hye-In Nam Ricardo Nilo Poyanco tam tran Seung Yon Rhee Department of Plant Biology Carnegie Institution for Science260 Panama StreetStanfordCA 94305USA

We aim to uncover the molecular mechanisms underlying adaptive traits in plants and understand how these traits evolve.A bottleneck in achieving our goals is the limited understanding of the functions of most genes in plant *** a sequenced genome as a starting point,we are building genome-wide molecular networks of genes and proteins using a combination of computational and empirical

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

基于AIEgen的早期肾病检测试纸的开发

基于AIEgen的早期肾病检测试纸的开发

引用

中国化学会第十三届全国分析化学年会

作者：章辛夷 Anh tran tam Pham 沈海峰谢你唐友宏澳大利亚弗林德斯大学科学与工程学院

慢性腎臟疾病（CKD）是全世界的主要健康問題,每年造成數百萬的死亡。超過1/3的65歲以上的人口是CKD的高風險人群,然而他們中的許多人不知道這種問題,直到肾病晚期,所以早期检测尤为重要。采用侧流免疫分析试纸条并配合相对应的读取设... 详细信息

慢性腎臟疾病（CKD）是全世界的主要健康問題,每年造成數百萬的死亡。超過1/3的65歲以上的人口是CKD的高風險人群,然而他們中的許多人不知道這種問題,直到肾病晚期,所以早期检测尤为重要。采用侧流免疫分析试纸条并配合相对应的读取设备来半定量的检测尿液中的尿蛋白,是当前的快速检测方法之一。本研究將基於前期對具有聚集誘導發光（AIE）特徵的尿蛋白檢測的新型熒光探針的研究為基礎,开发一种基于AIEgen的早期肾病检测试纸,以取代现有试纸具有的（采用量子点或者胶体金标记的抗体及相对应的抗原的）复杂设计及制造工艺,昂贵的成本及高的检测极限等缺点,并与我們開發的一種非實驗室使用的智能手機尿液測試裝置配合,用於家庭个人進行快速的定量腎功能診斷及監測他們的腎臟的功能。

关键词： AIEgen 早期肾病检试纸

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

The Continuous Knapsack Problem with Capacities

引用

Journal of the Operations Research Society of China 2021年第3期9卷 713-721页

作者： Huynh Duc Quoc Nguyen Chi tam tran Hoai Ngoc Nhan Department of Mathematics College of Natural ScienceCan Tho UniversityCan Tho City 900900Vietnam Faculty of Basic Sciences Vinh Long University of Technology EducationVinh Long 940000Vietnam

We address a variant of the continuous knapsack problem,where capacities regarding costs of items are given into *** prove that the problem is NP-complete although the classical continuous knapsack problem is solvable in linear *** the case that there exists exactly one capacity for all items,we solve the corresponding problem in O(n log n)time,where n is the number of items.

关键词： Knapsack problem Complexity Capacity Polynomially solvabl

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

*** human visual cortex responses to flickering light using functional near infrared spectroscopy and constrained ICA

引用

Journal of Innovative Optical Health Sciences 2014年第6期7卷 77-89页

作者： Nguyen Duc Thang Vo Van Toi Le Giang tran Nguyen Huynh Minh tam Lan Anh Trinh Biomedical Engineering Department International University Vietnam National Universities HCMCVietnam University of Saskatchewan Canada Electronics Engineering Department Posts and Telecommunications Institute of Technology Ho Chi Minh City Vietnam

The human visual sensitivity to the flickering light has been under investigation for *** finding of research in this area can contribute to the understanding of human visual system mechanism and visual disorders,and establishing diagnosis and treatment of *** aim of this study is to investigate the ffects of the flickering light to the visual cortex by monitoring the hemodynamic responses of the brain with the functional near infrared spectrosoopy(ENIRS)*** the acquired fNIRS signals are afected by physiological factors and measurement artifacts,constrained independent component analysis(eICA)was applied to extract the actual fNIRS responses from the obtained *** experimental results revealed significant changes(p<0.0001)of the hemodynamic responses of the visual *** the baseline when the flickering stimulation was *** the uses of cICA,the contrast to noise ratio(CNR),reflecting the contrast of hemodynamic concentration between rest and task,became *** indicated the improvement of the NIRS signals when the noise was *** subsequent studies,statistical analysis was used to infer the correlation between the NIRS signals and the visual *** found that there was a slight decrease of the oxygenated hemoglobin con-centration(about 5.69%)over four frequencies when the modulation ***,the variations of oxy and deoxy-hemoglobin were not statistically significant.

关键词： Papillometre visual stimulation functional near infrared spectroscopy constrained independent component analysis

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

Friction characteristics of mechanically exfoliated and CVD-grown single-layer MoS_2

引用

Friction 2018年第4期6卷 395-406页

作者： Dinh Le Cao KY Bien-Cuong tran KHAC Chinh tam LE Yong Soo KIM Koo-Hyun CHUNG School of Mechanical Engineering University of Ulsan Department of Physics and Energy Harvest Storage Research Center University of Ulsan

In this work, the friction characteristics of single-layer MoS2 prepared with chemical vapor deposition （CVD） at three different temperatures were quantitatively investigated and compared to those of single-layer MoS2 prepared using mechanical exfoliation. The surface and crystalline qualities of the MoS2 specimens were characterized using an optical microscope, atomic force microscope （AFM）, and Raman spectroscopy. The surfaces of the MoS2 specimens were generally flat and smooth. However, the Raman data showed that the crystalline qualities of CVD-grown single-layer MoS2 at 800 ℃ and 850 ℃ were relatively similar to those of mechanically exfoliated MoS2 whereas the crystalline quality of the CVD-grown single-layer MoS2 at 900 ℃ was lower. The CVD-grown single-layer MoS2 exhibited higher friction than mechanically exfoliated single-layer MoS2, which might be related to the crystalline imperfections in the CVD-grown MoS2. In addition, the friction of CVD-grown single-layer MoS2 increased as the CVD growth temperature increased. In terms of tribological properties, 800 ℃ was the optimal temperature for the CVD process used in this work. Furthermore, it was observed that the friction at the grain boundary was significantly larger than that at the grain, potentially due to defects at the grain boundary. This result indicates that the temperature used during CVD should be optimized considering the grain size to achieve low friction characteristics. The outcomes of this work will be useful for understanding the intrinsic friction characteristics of single-layer MoS2 and elucidating the feasibility of single-layer MoS2 as protective or lubricant layers for micro- and nano-devices.

关键词： atomic force microscope chemical vapor deposition grain boundary friction mechanical exfoliation MoS2

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

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：