检索结果-南通市图书馆

Reconstruction surgery in head and neck cancer patients amidst the COVID-19 pandemic:Current practice and lessons for the future

引用

World Journal of Clinical Cases 2023年第7期11卷 1434-1441页

作者： Daniele Lizambri Andrea Giacalone Pritik A Shah Marcos Roberto Tovani-Palone Department of Advanced Medical and Surgical Sciences University of Campania Luigi VanvitelliCaserta 81100Italy Department of Industrial Engineering Technologies for Sports Medicine and RehabilitationUniversity of Rome Tor VergataRome 00133Italy Bangalore Medical College and Research institute Karnataka 560002India Department of Research Analytics Saveetha Dental College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai 600077India

The coronavirus disease 2019(COVID-19)pandemic has imposed a radical change in daily life and work *** this context,health systems have suffered important and serious repercussions in all *** the changes brought about by the state of global health emergency,adjustments to guidelines,priorities,structures,professional teams,and epidemiological data stand *** light of this,the oncological field has witnessed several changes in the approach to cancer,whether due to delay in diagnosis,screening deficit,personnel shortage or the psychological impact that the pandemic has had on cancer *** article focuses on the management of oral carcinoma and the surgical approaches that oral and maxillofacial specialists have had at their disposal during the health *** this period,the oral and maxillofacial surgeons have faced many *** proximity of maxillofacial structures to the airways,the need of elective and punctual procedures in cancerous lesions,the aggressiveness of head and neck tumors,and the need for important healthcare costs to support such delicate surgeries are examples of some of the challenges imposed for this *** of the possible surgical'solutions'to the difficulties in managing surgical cases of oral carcinoma during the pandemic is locoregional flaps,which in the pre-COVID-19 era were less used than free ***,during the health emergency,its use has been widely *** setback may represent a precedent for opening up new *** the course of a long-term pandemic,a reassessment of the validity of different medical and surgical therapeutic approaches should be ***,given that the pandemic has highlighted vulnerabilities and shortcomings in a number of ways,including the issues of essential resource shortages,underinvestment in public health services,lack of coordination and versatility among politicians,policymakers and health leaders,resulting in overloaded health systems,rapi

关键词： Free tissue flaps Surgical flaps Head and neck neoplasms SARS-CoV-2 COVID-19 Pandemics

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

Influence of Reinforcement Mesh Configuration for Improvement of Concrete Durability

引用

China Ocean Engineering 2017年第5期31卷 631-638页

作者： PAN Chong-gen JIN Wei-liang MAO Jiang-hong ZHANG Hua SUN Li-hao WEI Dong Ningbo institute of Technology Zhejiang University institute of Structural Engineering Zhejiang University

Steel bar in concrete structures under harsh environmental conditions, such as chlorine corrosion, seriously affects its service life. Bidirectional electromigration rehabilitation （BIEM） is a new method of repair technology for reinforced concrete structures in such chloride corrosion environments. By applying the BIEM, chloride ions can be removed from the concrete and the migrating corrosion inhibit can be moved to the steel surface. In conventional engineering, the concrete structure is often configured with a multi-layer steel mesh. However, the effect of the BIEM in such structures has not yet been investigated. In this paper, the relevant simulation test is carried out to study the migration law of chloride ions and the migrating corrosion inhibitor in a concrete specimen with complex steel mesh under different energizing modes. The results show that the efficiency of the BIEM increases 50% in both the monolayer steel mesh and the double-layer steel mesh. By using the single-sided BIEM, 87% of the chloride ions are removed from the steel surface. The different step modes can affect the chloride ion removal. The chloride ions within the range of the reinforcement protective cover are easier to be removed than those in the concrete between the two layers of steel mesh. However, the amount of migrating corrosion inhibitor is larger in the latter circumstances.

关键词： bidirectional electromigration rehabilitation steel mesh chloride salt inhibitor

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 practical guide to promote informatics-driven efficient biotopographic material development

引用

Bioactive Materials 2022年第2期7卷 515-528页

作者： Yuanlong Guo Jiaomei Mi Chen Ye Yong Ao Mengru Shi Zhengjie Shan Bingzhi Li Zetao Chen Zhuofan Chen Krasimir Vasilev Yin Xiao Hospital of Stomatology Guanghua School of StomatologySun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material EngineeringGuangzhou510055China Academic Unit of Science TechnologyEngineering and Mathematics(STEM)University of South AustraliaMawson LakesSA5095Australia institute of Health and Biomedical Innovation Queensland University of TechnologyBrisbane4059Australia

Micro/nano topographic structures have shown great utility in many biomedical areas including cell therapies,tissue engineering,and implantable ***-assisted informatics methods hold great promise for the design of topographic structures with targeted properties for a specific medical *** benefit from these methods,researchers and engineers require a highly reusable“one structural parameter-one set of cell responses”***,existing confounding factors in topographic cell culture devices seriously impede the acquisition of this kind of *** carefully dissecting the confounding factors and their possible reasons for emergence,we developed corresponding guideline requirements for topographic cell culture device development to remove or control the influence of such *** on these requirements,we then suggested potential strategies to meet *** this work,we also experimentally demonstrated a topographic cell culture device with controlled confounding factors based on these guideline requirements and corresponding strategies.A“guideline for the development of topographic cell culture devices”was summarized to instruct researchers to develop topographic cell culture devices with the confounding factors removed or well *** guideline aims to promote the establishment of a highly reusable“one structural parameter-one set of cell responses”database that could facilitate the application of informatics methods,such as artificial intelligence,in the rational design of future biotopographic structures with high efficacy.

关键词： Biotopographic materials Cell culture device Confounding factor Database Informatics

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

The rhizospheric microbiome becomes more diverse with maize domestication and genetic improvement

引用

Journal of Integrative Agriculture 2022年第4期21卷 1188-1202页

作者： HUANG Jun LI Yun-feng MA Yuan-ying LI Yan-sheng JIN Jian LIAN Teng-xiang Key Laboratory of Plant Molecular Breeding of Guangdong Province College of AgricultureSouth China Agricultural UniversityGuangzhou 510640P.R.China Centre for Mined Land rehabilitation Sustainable Minerals InstituteThe University of QueenslandBrisbane Qld 4072Australia Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081P.R.China Department of Animal Plant and Soil SciencesCentre for AgriBioscienceLa Trobe UniversityMelbourne CampusBundoora Vic 3086Australia

Domestication and genetic improvement of maize improve yield and stress tolerance due to changes in morphological and physiological properties, which likely alter rhizosphere microbial diversity. Understanding how the evolution of maize germplasm impacts its rhizobacterial traits during the growth stage is important for optimizing plant-microbe associations and obtaining yield gain in domesticated germplasms. In this study, a total of nine accessions representing domestication and subsequent genetic improvement were selected. We then sequenced the plant DNA and rhizobacterial DNA of teosinte, landraces and inbred lines at the seedling, flowering and maturity stages in a field trial. Moreover, the soil chemical properties were determined at the respective stages to explore the associations of soil characteristics with bacterial community structures. The results showed that domestication and genetic improvement increased the rhizobacterial diversity and substantially altered the rhizobacterial community composition. The core microbiome in the rhizosphere differed among germplasm groups. The co-occurrence network analysis demonstrated that the modularity in the bacterial network of the inbred lines was greater than those of teosinte and the landraces. In conclusion, the increased diversity of the rhizobacterial community with domestication and genetic improvement may improve maize resilience to biotic stresses and soil nutrient availability to plants.

关键词： teosinte landraces inbred lines domestication and improvement core microbiome network

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

Effect of nonlinear soil-structure interaction on seismic response of low-rise SMRF buildings

引用

Earthquake Engineering and Engineering Vibration 2012年第4期11卷 541-551页

作者： Prishati Raychowdhury Poonam Singh Indian institute of Technology

The nonlinear behavior of a soil-foundation system may alter the seismic response of a structure by providing additional flexibility to the system and dissipating hysteretic energy at the soil-foundation interface. However, the current design practice is still reluctant to consider the nonlinearity of the soil-foundation system, primarily due to lack of reliable modeling techniques. This study is motivated towards evaluating the effect of nonlinear soil-structure interaction （SSI） on the seismic responses of low-rise steel moment resisting frame （SMRF） structures. In order to achieve this, a Winkler- based approach is adopted, where the soil beneath the foundation is assumed to be a system of closely-spaced, independent, nonlinear spring elements. Static pushover analysis and nonlinear dynamic analyses are performed on a 3-story SMRF building and the performance of the structure is evaluated through a variety of force and displacement demand parameters. It is observed that incorporation of nonlinear SSI leads to an increase in story displacement demand and a significant reduction in base moment, base shear and inter-story drift demands, indicating the importance of its consideration towards achieving an economic, yet safe seismic design.

关键词： soil-structure interaction Winkler modeling nonlinear analysis seismic response low-rise steel momentresisting frame

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

An improved modal pushover analysis procedure for estimating seismic demands of structures

引用

Earthquake Engineering and Engineering Vibration 2008年第1期7卷 25-31页

作者：毛建猛翟长海谢礼立 institute of Engineering Mechanics China Earthquake Administration School of Civil Engineering Harbin Institute of Technology

The pushover analysis （POA） procedure is difficult to apply to high-rise buildings, as it cannot account for the contributions of higher modes. To overcome this limitation, a modal pushover analysis （MPA） procedure was proposed by Chopra et al. （2001）. However, invariable lateral force distributions are still adopted in the MPA. In this paper, an improved MPA procedure is presented to estimate the seismic demands of structures, considering the redistribution of inertia forces after the structure yields. This improved procedure is verified with numerical examples of 5-, 9- and 22-story buildings. It is concluded that the improved MPA procedure is more accurate than either the POA procedure or MPA procedure. In addition, the proposed procedure avoids a large computational effort by adopting a two-phase lateral force distribution..

关键词： seismic demand estimation pushover analysis improved modal pushover analysis two-phase lateral forcedistribution capacity curve

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

Advanced liquid crystal-based switchable optical devices for light protection applications:principles and strategies

引用

Light(Science & Applications) 2023年第4期12卷 512-541页

作者： Ruicong Zhang Zhibo Zhang Jiecai Han Lei Yang Jiajun li Zicheng Song Tianyu Wang Jiaqi Zhu National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China Research Center of Analysis and Measurement Harbin Institute of TechnologyHarbin 150080China School of Energy Science&Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Micro-systems and Micro-structures Manufacturing Ministry of EducationHarbin 150080China

With the development of optical technologies,transparent materials that provide protection from light have received considerable attention from *** important channels for external light,windows play a vital role in the regulation of light in buildings,vehicles,and *** is a need for windows with switchable optical properties to prevent or attenuate damage or interference to the human eye and light-sensitive instruments by inappropriate optical *** this context,liquid crystals(LCs),owing to their rich responsiveness and unique optical properties,have been considered among the best candidates for advanced light protection *** this review,we provide an overview of advances in research on LC-based methods for protection against ***,we introduce the characteristics of different light sources and their protection ***,we introduce several classes of light modulation principles based on liquid crystal materials and demonstrate the feasibility of using them for light *** addition,we discuss current light protection strategies based on liquid crystal materials for different ***,we discuss the problems and shortcomings of current *** propose several suggestions for the development of liquid crystal materials in the field of light protection.

关键词： optical crystal liquid

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

Transcranial magnetic stimulation in animal models of neurodegeneration

引用

Neural Regeneration Research 2022年第2期17卷 251-265页

作者： Mohammad Uzair Turki Abualait Muhammad Arshad Woo-Kyoung Yoo Ali Mir Reem Fahd Bunyan Shahid Bashir Department of Biological Sciences Faculty of Basic&Applied SciencesInternational Islamic University IslamabadPakistan College of Applied Medical Sciences Imam Abdulrahman Bin Faisal UniversityDammamSaudi Arabia Department of Physical Medicine and rehabilitation Hallym University College of MedicineAnyangSouth Korea Hallym institute for Translational Genomics&Bioinformatics Hallym University College of MedicineAnyangSouth Korea Neuroscience Center King Fahad Specialist Hospital DammamDammamSaudi Arabia

Brain stimulation techniques offer powerful means of modulating the physiology of specific neural structures. In recent years, non-invasive brain stimulation techniques, such as transcranial magnetic stimulation(TMS) and transcranial direct current stimulation, have emerged as therapeutic tools for neurology and neuroscience. However, the possible repercussions of these techniques remain unclear, and there are few reports on the incisive recovery mechanisms through brain stimulation. Although several studies have recommended the use of non-invasive brain stimulation in clinical neuroscience, with a special emphasis on TMS, the suggested mechanisms of action have not been confirmed directly at the neural level. Insights into the neural mechanisms of non-invasive brain stimulation would unveil the strategies necessary to enhance the safety and efficacy of this progressive approach. Therefore, animal studies investigating the mechanisms of TMSinduced recovery at the neural level are crucial for the elaboration of non-invasive brain stimulation. Translational research done using animal models has several advantages and is able to investigate knowledge gaps by directly targeting neuronal levels. In this review, we have discussed the role of TMS in different animal models, the impact of animal studies on various disease states, and the findings regarding brain function of animal models after TMS in pharmacology research.

关键词： Alzheimer's disease depression glial cells neurorehabilitation Parkinson's disease repetitive transcranial magnetic stimulation transcranial direct current stimulation transcranial magnetic stimulation

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

Individual Differences in Cognitive Performance Regulated by Deep-Brain Activity during Mild Passive Hyperthermia and Neck Cooling

引用

Journal of Behavioral and Brain Science 2016年第8期6卷 305-316页

作者： Emiko Imai Yoshitada Katagiri Hiroshi Hosaka Kiyoshi Itao Department of rehabilitation Science Kobe University Graduate School of Health Science Hyogo Japan Advanced ICT Research institute National Institute of Information and Communication Technology Tokyo Japan Graduate School of Frontier Science The University of Tokyo Chiba Japan The Advanced institute of Wearable Environmental Information Networks Tokyo Japan

Hyperthermia-induced decline in cognitive performance is a moderate complication that poses challenges to the maintenance of safety. Although the underlying mechanism can be attributed to the disruption of brain networks, the propensity remains unclear. This study aimed to test the hypothesis that the extent of the alterations in cognitive performance is governed by the activity of deep brain structures, including monoaminergic neural systems. A decline in cognitive performance during mild hyperthermia and the beneficial effects of neck cooling were demonstrated using the Continuous Performance Test as a battery of cognitive tasks. Aspects of cognitive performance were characterized using the deep-brain activity (DBA) index as a neural activity parameter and the State-Trait Anxiety Inventory to assess the extent of alterations in cognitive performance as an individual measure. It was found that a higher average DBA index during tasks is essential for high cognitive performance in the heat. This beneficial effect of DBA is governed by the upper brainstem. This DBA benefit is more significant for individuals with higher average DBA indices at rest in a normal environment. Individual differences in cognitive performance in the heat are governed by differences in DBA. In addition, the beneficial effect of DBA on cognitive performance in heat only applies under conditions including neck cooling. This limited neck-cooling effect is attributed to anti-homeostatic thermoregulatory responses to cognitive tasks regulated by DBA.

关键词： Cognitive Performance Hyperthermia Neck Cooling Deep Brain Electroencephalogram Alpha-2 Rhythm

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

Dimensional analysis of earthquake-induced pounding between adjacent inelastic MDOF buildings

引用

Earthquake Engineering and Engineering Vibration 2015年第2期14卷 295-313页

作者： Zhai Changhai Jiang Shan Li Shuang Xie Lili School of Civil Engineering Harbin Institute of Technology Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering Mechanics China Earthquake Administration

In this study the seismic pounding response of adjacent multi-degree-of-freedom(MDOF) buildings with bilinear inter-story resistance characteristics is investigated through dimensional analysis. The application of dimensional analysis leads to a condensed presentation of the response, and the remarkable self-similarity property for bilinear MDOF buildings with inelastic collision is uncovered. It is shown that when the response is expressed in the appropriate dimensionless form, response spectra for any intensity of the excitation collapse to a single master curve. The reduced Π set explicitly describes the interaction between the colliding structures. The effect of pounding on the MDOF building’s response is illustrated using three well-divided spectral regions(amplifi ed, de-amplifi ed and unaffected regions). Parametric studies are conducted to investigate the effects of the story stiffness of structures, the story stiffness ratio and mass ratio of adjacent buildings, the structural inelastic characteristics and the gap size values. Results show that(i) the infl uence of system stiffness ratio to the lighter and more fl exible building is more signifi cant in the fi rst spectral region, where the maximum response of the building is amplifi ed because of pounding; and(ii) the velocity and pounding force of the heavier and stiffer building is unexpectedly sensitive to the mass ratio of adjacent buildings.

关键词： pounding dimensional analysis earthquake engineeri

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：