检索结果-南通市图书馆

Recovery rates of persistent post-COVID-19 olfactory dysfunction using psychophysical assessment:A longitudinal cohort study

引用

World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 79-87页

作者： Jeremy P.Tervo Patricia T.Jacobson Brandon J.Vilarello Tiana M.Saak Francesco F.Caruana Liam W.Gallagher Joseph B.Gary David A.Gudis paule V.Joseph D.P.Devanand Terry e.Goldberg Jonathan B.Overdevest Columbia University Vagelos College of Physicians and Surgeons New YorkNew YorkUSA Department of Otolaryngology-Head and Neck Surgery New York-Presbyterian/Columbia University Irving Medical CenterNew YorkNew YorkUSA Department of Otolaryngology-Head and Neck Surgery University of PittsburghPittsburghPennsylvaniaUSA Department of Otolaryngology-Head and Neck Surgery University of MinnesotaMinneapolisMinnesotaUSA National Institute of Alcohol Abuse and Alcoholism Section of Sensory Science and Metabolism&National Institute of Nursing ResearchBethesdaMarylandUSA New York-Presbyterian/Columbia University Irving Medical Center New YorkNew YorkUSA

Objectives:Persistent olfactory dysfunction(OD)following loss of smell associated with SARS-CoV-2 infection is a major feature of long *** on the prevalence of persistent OD predominantly rely on self-reported olfactory *** studies have tracked longitudinal rates of recovery using psychophysical assessment among patients presenting for evaluation of persistent OD beyond a window of acute *** anchored in standardized testing methods are needed to counsel patients who fail to acutely regain their sense of *** study aims to quantify the degree of persistent OD in post-COVID-19 patients who experience subjective and psychophysical ***:We grouped participants presenting for OD evaluation into cohorts based on both subjective and psychophysical olfactory status at a baseline assessment and assessed their olfactory abilities with a visual analogue scale and the Sniffin'Sticks extended test at baseline and 1-year time *** had confirmed a history of COVID-19 by lab evaluation or clinical diagnosis if lab evaluation was not ***:Baseline olfactory evaluation was completed by 122 participants,53 of whom completed the 1-year follow-up *** participants presenting with perceived OD,74.5%had confirmed psychophysical OD at baseline,with 55.1%at 1-year *** had reliable trends in self-rated versus psychophysically tested olfactory function at both time *** total threshold,discrimination,and identification(TDI)score improved by+3.25 points in the cohort with psychophysical OD(p=0.0005),with this improvement largely attributable to an increase in median threshold scores(+2.75 points;p=0.0004).Conclusions:OD persists in a significant number of patients who fail to acutely recovery their sense of smell after COVID-19,with many demonstrating lingering deficits at *** in threshold,but not discrimination or identification,most significantly mediate improvement

关键词： long COVID olfaction post-COVID condition smell dysfunction

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 metamaterial-free fluid-flow cloak

引用

National Science Review 2022年第9期9卷 212-218页

作者： Fuyang tay Youming Zhang Hongyi Xu Honghui Goh Yu Luo Baile Zhang Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University School of electrical and electronic engineering Nanyang Technological University Centre for Disruptive Photonic Technologies Nanyang Technological University

The model of ide al fluid flow around a cylindrical obstacle exhibits a long-established physical picture,where originally straight streamlines are deflected over the whole space by the *** by transformation optics and metamaterials,recent theories have proposed the concept of fluid cloaking,which is able to recover the straight streamlines,as if the obstacle did not ***,such a cloak,similar to all previous transformation-optics-based devices,relies on complex metamaterials with inhomogeneous parameters and is difficult to *** we deploy the theory of scattering cancellation and report on the experimental realization of a fluid-flow cloak without *** clo ak is realized by engineering the geometry of the fluid channel,which effectively cancels the dipole-like scattering of the *** clo aking effect is demonstrated through the direct observation of recovered straight streamlines in the fluid *** work sheds new light on conventional fluid control and may find application in microfluidic devices.

关键词： fluid-flow control invisibility cloaks metamaterials

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Biomaterial scaffolds for clinical procedures in endodontic regeneration

引用

Bioactive Materials 2022年第6期7卷 257-277页

作者： He Liu Jing Lu Qianzhou Jiang Markus Haapasalo Junrong Qian Franklin R.tay Ya Shen Department of Stomatology Affiliated Hospital of Jining Medical UniversityChina Division of endodontics Department of Oral Biological and Medical SciencesFaculty of DentistryUniversity of British ColumbiaCanada Key Laboratory of Oral Disease School and Hospital of StomatologyFujian Medical UniversityFuzhouChina Department of endodontics Stomatology Hospital of Guangzhou Medical UniversityGuangzhouChina Department of endodontics The Dental College of GeorgiaAugusta UniversityAugustaGAUSA

Regenerative endodontic procedures have been rapidly evolving over the past two decades and are employed extensively in clinical *** procedures have been perceived as valuable adjuvants to conventional strategies in the treatment of necrotic immature permanent teeth that were deemed to have poor *** a component biological triad of tissue engineering(i.e.,stem cells,growth factors and scaffolds),biomaterial scaffolds have demonstrated clinical potential as an armamentarium in regenerative endodontic procedures and achieved remarkable *** aim of the present review is to provide a broad overview of biomaterials employed for scaffolding in regenerative *** favorable properties and limitations of biomaterials organized in naturally derived,host-derived and synthetic material categories were *** and clinical studies published over the past five years on the performance of biomaterial scaffolds,as well as current challenges and future perspectives for the application of biomaterials for scaffolding and clinical evaluation of biomaterial scaffolds in regenerative endodontic procedures were addressed in depth.

关键词： Biomaterials Clinical approach Regenerative endodontics Scaffolds

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

Clinical and Anatomo-Pathological Study of Digestive Polyps at Point G Teaching Hospital

引用

Open Journal of Gastroenterology 2023年第3期13卷 111-116页

作者： Sanra Déborah Sanogo marcelle paule tay.e Ganda Soumaré Ouatou Mallé Abdoulaye Maiga Luc Sidibé Hourouma Sow Kadiatou Samaké Moussa Y. Dicko Abdoulaye Diarra Ilias Guindo Bakarou Kamaté Cheickh B. Traoré Hepatogastroenterology Department Point G University Hospital Bamako Mali Anatomical Pathology Department Point G University Hospital Bamako Mali Hepatogastroenterology Department Gabriel Touré University Hospital Bamako Mali CHU Bocar Sidy Sall Bamako Mali

Introduction: The aim of our study was to describe the aspects clinical and pathology of digestive polyps. Methods: This was a descriptive and analytical study with retrospective and prospective collection from January 2014 to September 2020, i.e. a duration of 72 months. Our study focused on all cases of non-cancerous digestive pathologies. The data were collected from registers, medical files and reports from the anatomy and pathological cytology department of the Point G University Hospital. All of this data was entered on an individual survey form. This sheet includes demographic data, qualitative and quantitative variables. Results: We conducted a study of 131 cases of digestive polyps. The frequency of digestive polyps was 3.65%. The mean age of our patients was 44.6 ± 21 years with extremes of 2 years and 79 years, with a male predominance and a sex ratio of 1.01. The biopsy was the type of sample most represented in 77.1%. The digestive polyps were located in stomach in 37.4%;the colon in 27.5% then the rectum 21.4%. The polyp sessile accounted for 65.6%. Histological examination revealed that adenomatous polyps were predominant in 77% of cases, followed by juvenile polyps in 9.2%, then hyperplastic polyps in 6.2%. Low grade dysplasia was found in adenomatous polyps in 61.53% and high grade found in 38.4%. Gastritis due to Helicobacter pylori (Hp) was found in 16% of cases. Conclusion: Digestive polyps are common in the general population. The prognosis is linked to the risk of neoplastic degeneration of adenomas.

关键词： Digestive Polyps Clinical Anatomopathology

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

Unconventional topological phase transition in non-symmorphic material KHgX(X=As,Sb,Bi)

引用

npj Computational Materials 2019年第1期5卷 599-605页

作者： Chin-Shen Kuo tay-Rong Chang Su-Yang Xu Horng-tay Jeng Department of Physics National Tsing Hua UniversityHsinchu 30013Taiwan Department of Physics National Cheng Kung UniversityTainan 701Taiwan Center for Quantum Frontiers of Research&Technology(QFort) Tainan 701Taiwan Department of Physics Massachusetts Institute of TechnologyCambridgeMA 02139USA Physics Division National Center for Theoretical SciencesHsinchu 30013Taiwan Institute of Physics Academia SinicaTaipei 11529Taiwan

Traditionally topological phase transition describes an evolution from topological trivial to topological nontrivial *** from the non-symmorphic crystalline symmetry,we propose in this work an unconventional topological phase transition scheme between two topological nontrivial insulating states mediated by a Dirac gapless state,differing from the traditional topological phase *** KHgX(X=As,Sb,Bi)family is the first experimentally realized topological non-symmorphic crystalline insulator(TNCI),where the topological surface states are characterized by the Mobius-twisted *** on first-principles calculations,we present a topological insulator–metal transition from TNCI into a Dirac semimetal(DSM)via applying an external pressure on *** find an unusual mirror Chern number C_(m)=−3 for the DSM phase of KHgX in the non-symmorphic crystal structure,which is topologically distinct from the traditional DSM such as Na_(3)Bi and Cd_(3)As_(2).Furthermore,we predict a new TNCI phase in KHgX via symmetry *** topological surface states in this new TNCI phase display zigzag connectivity,different from the unstressed *** results offer a comprehensive study for understanding how the topological surface states evolve from a quantum phase transition in non-symmorphic system.

关键词： topological transition phase

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

Wide-range ideal 2D Rashba electron gas with large spin splitting in Bi_(2)Se_(3)/MoTe_(2) heterostructure

引用

npj Computational Materials 2017年第1期3卷 442-447页

作者： Te-Hsien Wang Horng-tay Jeng Department of Physics National Tsing Hua UniversityHsinchu 30013Taiwan

An application-expected ideal two-dimensional Rashba electron gas,i.e.,nearly all the conduction electrons occupy the Rashba bands,is crucial for semiconductor spintronic *** demonstrate that such an ideal two-dimensional Rashba electron gas with a large Rashba splitting can be realized in a topological insulator Bi_(2)Se_(3) ultrathin film grown on a transition metal dichalcogenides MoTe_(2) substrate through first-principle *** results show the Rashba bands exclusively over a very large energy interval of about 0.6 eV around the Fermi level within the MoTe2 semiconducting *** a wide-range ideal twodimensional Rashba electron gas with a large spin splitting,which is desirable for real devices utilizing the Rashba effect,has never been found *** to the strong spin-orbit coupling,the strength of the Rashba splitting is comparable with that of the heavy-metal surfaces such as Au and Bi surfaces,giving rise to a spin precession length as small as~10 *** maximum in-plane spin polarization of the inner(outer)Rashba band near theΓpoint is about 70%(60%).The room-temperature coherence length is at least several times longer than the spin precession length,providing good coherency through the spin processing *** wide energy window for ideal Rashba bands,small spin precession length,as well as long spin coherence length in this twodimensional topological insulator/transition metal dichalcogenides heterostructure pave the way for realizing an ultrathin nanoscale spintronic device such as the Datta-Das spin transistor at room-temperature.

关键词： temperature. splitting Rashba

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

Who Supports Redistribution? Subjective Income Inequality in Japan and China

引用

economic and Political Studies 2015年第2期3卷 30-59页

作者： STePHeN tay the Lee Kong Chian School of Medicine Nanyang Technological University

Governments reduce income inequality with redistribution policies. These policies are often contentious because people who live in the same country have different preferences for redistribution. Some prefer the government to do more while others prefer the government to do less. Hence what explains the difference in preferences? Using the methodologically suitable cases of Japan and China, this paper contributes to the redistributive preference literature by proposing an alternative theory of how a person's subjective evaluation of and experiences with income inequality—subjective income inequality—affect his/her redistributive preferences. Specifically, a person who feels that his/her country's level of income inequality is too high is more likely to support government redistribution. But contrary to extant studies, this paper finds that a spatial locality's level of objective income inequality does not systematically affect its citizens' preference for redistribution. This finding has implications for redistribution policies because government policies in Japan and China—as with other countries—narrowly frame income inequality in the objective dimensions by pegging it to "objective" income inequality indices(e.g., Gini ratio), thereby ignoring the more important subjective dimensions of income inequality.

关键词： redistributive preferences subjective income inequ

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

用于神经形态学计算的低能耗、高稳定性2D-3D钙钛矿忆阻器

引用

Science China Materials 2023年第5期66卷 2013-2022页

作者：孙凯旋王庆瑞周龙王静娟常晶晶郭瑞 Beng Kang tay 闫小兵 Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province College of Electron and Information EngineeringHebei UniversityBaoding 071002China State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian UniversityXi’an 710071China Centre for Micro-and Nano-electronics(CMNe) School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore UMI 3288 CINTRA(CNRS-NTU-THALeS Research Alliances) Nanyang Technological UniversitySingapore 637553Singapore

近年来,有机-无机卤化物钙钛矿在忆阻器和人工突触器件等电子器件中的应用取得了快速进展.由于其离子迁移特性和制造上的优势,有机-无机卤化物钙钛矿有望成为下一代计算设备的候选材料.本文采用ITO/FA_(1-y)MA_(y)PbI_(3-x)Cl_(x)/(PeA)... 详细信息

近年来,有机-无机卤化物钙钛矿在忆阻器和人工突触器件等电子器件中的应用取得了快速进展.由于其离子迁移特性和制造上的优势,有机-无机卤化物钙钛矿有望成为下一代计算设备的候选材料.本文采用ITO/FA_(1-y)MA_(y)PbI_(3-x)Cl_(x)/(PeA)_(2)PbI_(4)/Au的叠层结构,研究了2D-3D有机-无机杂化钙钛矿忆阻器.结果表明,这种新型忆阻器具有新颖的电阻开关特性,如扫描速率相关的电流开关特性、良好的电流-电压曲线重复性和超低能耗.利用p-i-n结模型证实了缺陷调制电子隧穿机制,并证明了忆阻器件的电导状态由电极侧附近钙钛矿薄膜中的缺陷浓度决定.除了良好的忆阻特性外,这种2D-3D钙钛矿型忆阻器还可以很好地用作人工突触,其内部缺陷运动可以真实地模拟生物突触中Ca^(2+)的流入和挤出.此外,由于有机-无机卤化物钙钛矿中的可切换p-i-n结构,这种基于钙钛矿的人工突触具有超低功耗.我们的发现展示了2D-3D钙钛矿忆阻器在未来神经形态计算系统中的巨大应用潜力.

关键词： perovskite ion migration memristor low energy consumption neuromorphic computing

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

Mechano-responsive hydrogel for direct stem cell manufacturing to therapy

引用

Bioactive Materials 2023年第6期24卷 387-400页

作者： Yufeng Shou Ling Liu Qimin Liu Zhicheng Le Khang Leng Lee Hua Li Xianlei Li Dion Zhanyun Koh Yuwen Wang Tong Ming Liu Zheng Yang Chwee Teck Lim Christine Cheung Andy tay Department of Biomedical engineering National University of Singapore117583Singapore Institute for Health Innovation&Technology National University of Singapore117599Singapore School of Civil engineering and Architecture Wuhan University of Technology430070WuhanChina NUS Tissue engineering Program National University of Singapore117510Singapore Lee Kong Chian School of Medicine Nanyang Technological University636921Singapore School of Mechanical and Aerospace engineering Nanyang Technological University639798Singapore Institute of Molecular and Cell Biology Agency for ScienceTechnology and Research(A*STAR)138648Singapore Department of Orthopaedic Surgery Yong Loo Lin School of MedicineNational University of Singapore119288Singapore Mechanobiology Institute National University of Singapore117411Singapore

Bone marrow-derived mesenchymal stem cell(MSC)is one of the most actively studied cell types due to its regenerative potential and immunomodulatory *** cell expansion methods using 2D tissue culture plates and 2.5D microcarriers in bioreactors can generate large cell numbers,but they compromise stem cell potency and lack mechanical preconditioning to prepare MSC for physiological loading expected in *** overcome these challenges,in this work,we describe a 3D dynamic hydrogel using magneto-stimulation for direct MSC manufacturing to *** our technology,we found that dynamic mechanical stimulation(DMS)enhanced matrix-integrinβ1 interactions which induced MSCs spreading and *** addition,DMS could modulate MSC biofunctions including directing MSC differentiation into specific lineages and boosting paracrine activities(e.g.,growth factor secretion)through YAP nuclear localization and FAK-eRK *** our magnetic hydrogel,complex procedures from MSC manufacturing to final clinical use,can be integrated into one single platform,and we believe this‘all-in-one’technology could offer a paradigm shift to existing standards in MSC therapy.

关键词： Mesenchymal stem cell Dynamic mechanical stimulation Magnetic hydrogel Stem cell manufacturing Cell therapy

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

Theoretical study of defect impact on two-dimensional MoS_2

引用

Journal of Semiconductors 2015年第12期36卷 18-23页

作者： Anna V.Krivosheeva Victor L.Shaposhnikov Victor e.Borisenko Jean-Louis Lazzari Chow Waileong Julia Gusakova Beng Kang tay Belarusian State University of Informatics and Radioelectronics CNRS Aix-Marseille Université NOVITAS Nanoelectronics Centre of Excellence School of Electrical and Electronic Engineering Nanyang Technological University CINTRA CNRS NTUTHALES Nanyang Technological University

Our theoretical findings demonstrate for the first time a possibility of band-gap engineering of monolayer MoS2 crystals by oxygen and the presence of vacancies. Oxygen atoms are revealed to substitute sulfur ones, forming stable MoS2-xOx ternary compounds, or adsorb on top of the sulfur atoms. The substituting oxygen provides a decrease of the band gap from 1.86 to 1.64 eV and transforms the material from a direct-gap to an indirect-gap semiconductor. The surface adsorbed oxygen atoms decrease the band gap up to 0.98 eV depending on their location tending to the metallic character of the electron energy bands at a high concentration of the adsorbed atoms. Oxygen plasma processing is proposed as an effective technology for such band-gap modifications.

关键词： two-dimensional crystal molybdenum disulfide band gap vacancy oxygen

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：