检索结果-南通市图书馆

Millimetric devices for nerve stimulation:a promising path towards miniaturization

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第8期19卷 1702-1706页

作者： Ryan M.Dorrian Anna v.Leonard antonio Lauto Spinal Cord Injury Research Group School of BiomedicineThe University of AdelaideAdelaideSAAustralia School of Science Western Sydney UniversityPenrithNSWAustralia

Nerve stimulation is a rapidly developing field,demonstrating positive outcomes across several *** potential benefits,current nerve stimulation devices are large,complicated,and are powered via implanted pulse *** facto rs necessitate invasive surgical implantation and limit potential *** nerve stimulation devices to millimetric sizes would make these interventions less invasive and facilitate broader therapeutic ***,device miniaturization presents a serious engineering *** review presents significant advancements from several groups that have overcome this challenge and developed millimetricsized nerve stimulation *** are based on antennas,mini-coils,magneto-electric and optoelectronic materials,or receive ultrasound *** highlight key design elements,findings from pilot studies,and present several considerations for future applications of these devices.

关键词： biomedical engineering deep brain stimulation electrical engineering electrical stimulation neuromodulation peripheral nerve stimulation

Spinal cord injury-induced cognitive impairment: a narrative review

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2022年第12期17卷 2649-2654页

作者： Oscar v.Alcántar-Garibay Diego Incontri-Abraham antonio Ibarra Centro de Investigación en Ciencias de la Salud(CICSA) Facultad de Ciencias de la SaludUniversidad Anáhuac México Campus NorteHuixquilucanEstado de MéxicoMéxico

Spinal cord injury is a serious damage to the spinal cord that can lead to life-long *** on its etiology,spinal cord injury can be classified as traumatic or non-traumatic spinal cord ***,the pathology of spinal cord injury can be divided into two phases,a primary injury phase,and a secondary injury *** primary spinal cord injury phase involves the initial mechanical injury in which the physical force of impact is directly imparted to the spinal cord,disrupting blood vessels,axons,and neural cell *** the primary injury,a cascade of secondary events begins,expanding the zone of neural tissue damage,and exacerbating neurological *** injury is a progressive condition characterized by pro-inflammatory cytokines,reactive oxygen species,oxidative damage,excitatory amino acids such as glutamate,loss of ionic homeostasis,mitochondrial dysfunction,and cell *** secondary phase lasts for several weeks or months and can be further subdivided into acute,subacute,and *** of the most frequent and devastating complications developed among the spinal cord injury population is cognitive *** risk of cognitive decline after spinal cord injury has been reported to be 13 times higher than in healthy *** exact etiology of this neurological complication remains unclear,however,many factors have been proposed as potential contributors to the development of this disorder,such as concomitant traumatic brain injury,hypoxia,anoxia,autonomic dysfunction,sleep disorders such as obstructive sleep apnea,body temperature dysregulation,alcohol abuse,and certain *** review focuses on a deep understanding of the pathophysiology of spinal cord injury and its relationship to cognitive *** highlight the main mechanisms that lead to the development of this neurological complication in patients with spinal cord injury.

关键词： autonomic dysfunction cognitive impairment spinal cord injury traumatic brain injury

Multi-objective optimization design of bridge piers with hybrid heuristic algorithms

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第6期13卷 420-432页

作者： Francisco J. MARTINEZ-MARTIN Fernando GONZALEZ-vIDOSA antonio HOSPITALER víctor YEPES Department of Geotechnical Engineering Universitat Politècnica de València 46022 Valencia Spain Department of Construction Engineering ICITECH Universitat Politècnica de València 46022 Valencia Spain

This paper describes one approach to the design of reinforced concrete (RC) bridge piers, using a three-hybrid multi- objective simulated annealing (SA) algorithm with a neighborhood move based on the mutation operator from the genetic algorithms (GAs), namely MOSAMO1, MOSAMO2 and MOSAMO3. The procedure is applied to three objective functions: the economic cost, the reinforcing steel congestion and the embedded CO 2 emissions. Additional results for a random walk and a descent local search multi-objective algorithm are presented. The evaluation of solutions follows the Spanish Code for structural concrete. The methodology was applied to a typical bridge pier of 23.97 m in height. This example involved 110 design variables. Results indicate that algorithm MOSAMO2 outperforms other algorithms regarding the definition of Pareto fronts. Further, the proposed procedure will help structural engineers to enhance their bridge pier designs.

关键词： Bridge piers Concrete structures Multi-objective optimization Simulated annealing (SA) Structural design

Quasi-freestanding graphene on Ni（110）： A graphene/ metal contact with suppressed interface states

在线全文

学校读者我要写书评

暂无评论

Nano Research 2016年第6期9卷 1795-1800页

作者： antonio Politano Department of Physics University of Calabria via Ponte Bucci 3 I/C 1-87036 Rende (CS) Italy

Graphene/Ni（110） has been studied by time-resolved X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure. The C ls core level shows a splitting typical of periodically rippled interfaces. The analysis of the C K-edge reveals that the interface states previously observed for graphene/Ni（111） are suppressed in graphene/Ni（110）. This suppression is due to the reduced hybridization of the Dirac-cone electrons in graphene with the d-bands of the （110）-oriented nickel contacts. Our results show that, contrary to commensurate growth of graphene on Ni（111）, epitaxially grown graphene on Ni（110） behaves as a quasi-freestanding sheet, as the lattice mismatch gives rise to a moir6 reconstruction.

关键词： graphene electronic properties synchrotron radiation X-ray photoelectronspectroscopy near-edge X-rayphotoelectron spectroscopy

Interplay between the glass and the gel transition

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2019年第10期62卷 45-50页

作者： Annalisa Fierro antonio de Candia antonio Coniglio CNR-SPIN c/o Complesso di Monte S.AngeloNapoli 80126Italy Dipartimento di Fisica"Pancini" Universita di Napoli"FedericoⅡ"Complesso di Monte S.AngeloNapoli 80126Italy

By changing the control parameters, many physical systems reach a slow dynamics regime followed by an arrested or a quasiarrested state. Examples, among others, are gels and glasses. In this paper, we discuss some experimental and theoretical results in polymer and colloidal systems, where gel and glass transitions interfere, and use models from Mode Coupling Theory（MCT）to illustrate the rich phenomenology observed. The continuous and the discontinuous transition lines, found in the MCT models,are considered suitable to describe respectively the gel and the glass transitions, so we suggest that the interplay between gel and glass may be interpreted in terms of the F13 MCT model, clarifying also the origin of logarithmic decays often observed in such systems. In particular, the theoretical predictions of the MCT in the F13 model are compared with Molecular Dynamics simulations in model systems for chemical gels and charged colloids.

关键词： glass gel and sol colloid

An updated checklist of macrofungi of vivara island(gulf of Naples-Italy)

在线全文

学校读者我要写书评

暂无评论

Studies in Fungi 2019年第1期4卷 205-215页

作者： Lubrano Lavadera A Mazzella v D’antonio C via Liberta’22 80079 Procida(NA) Stazione Zoologica Anton Dohrn villa Comunale 80121 Napoli LIPU via M.Chiaiolella 5880079 Procida

Islands are special environments for studying *** the vivara island,an integral natural reserve,several taxonomic studies have been performed in the last decades but the taxonomic composition of the mycoflora is still not *** this reason,here we present an updated checklist of the mycoflora present on the island,part of a more complex work that allowed the mapping of all the living species present in this precious natural park,over the past decade.

关键词： Ascomycota Basidiomycota Fungi Natural reserve Taxonomy

Cost-effective synthesis of giant molecule acceptors(GMAs)for stable polymer solar cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第4期67卷 1041-1043页

作者： antonio Facchetti Department of Chemistry and the Materials Research Center Northwestern University2145 Sheridan Road60208 EvanstonIllinoisUSA School of Materials Science and Engineering Georgia Institute of Technology771 Ferst Drive30332 AtlantaGeorgiaUSA

Polymer solar cells(PSCs)have emerged as a disruptive energy technology due to simple device architecture,earthabundant elemental composition,lightweight nature,and inherent mechanical flexibility[1,2].via a strategic acceptordonor-acceptor(A-D-A)design of small-molecule acceptors(SMAs),device power conversion efficiency(PCE)has now increased>19%.

关键词： acceptor synthesis donor

Impact of radiative cooling on the energy performance of courtyards in Mediterranean climate

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2024年第9期17卷 1491-1513页

作者： Carlos-antonio Domínguez-Torres antonio Domínguez-Delgado Escuela Técnica Superior de Arquitectura Universidad de SevillaAv.de Reina Mercedes241012 SevillaSpain Department of Applied Mathematics 1 Escuela Técnica Superior de ArquitecturaUniversidad de SevillaAv.de Reina Mercedes241012 SevillaSpain

Radiative cooling has proven to be a useful tool to address the problems of lack of comfort and excessive energy consumption in situations of high temperatures,overheating and heat ***,incorporating courtyards in warm climate zones has been found to be highly beneficial in addressing similar ***,there is interest in analyzing the combined effects of both:radiative cooling and *** paper presents an analysis of the impact of the application of radiative cooling on a courtyard using a comprehensive simulation approach that includes a CFD model for the thermodynamic airflow in the adjacent roofs and inside the courtyard,equations for the transient heat conduction through roofs,walls and courtyard slabs,and a hybrid raytracing-radiosity model for the evaluation of the solar radiation reaching the building surfaces and its reflections,both of specular and diffuse origin,and for the calculation of the thermal radiation exchange,especially with the *** results show that in the hot season,the courtyard with radiative cooling always provides lower temperatures than the initial courtyard does,with a temperature range of 18.33℃to 33.78℃,compared to a range of 19.32℃to 38.00℃in the initial courtyard,and producing a greater difference with outdoor temperatures that can reach 12℃versus 8℃for the reference *** addition,it was found that the courtyard with radiative cooling is able to significantly reduce the observed nighttime overheating by providing lower temperatures than the outdoor temperatures in the 50%of the nights *** was also found that the thermal loads to achieve indoor thermal comfort in the spaces adjacent to the courtyard were reduced by 63.46%to 69.85%.

关键词： radiative cooling passive cooling CFD three-dimensional modeling energy saving thermal comfort

Tannin-Based Biofoams-A Review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2019年第5期7卷 477-492页

作者： antonio Pizzi LERMAB-ENSTIB University of Lorraine27 rue Philippe Seguin88000 EpinalFrance

This review details the development of tannin-based biofoams for fire resistance and acoustic insulation and details the different varieties of these foams that have been developed,from tannin-furanic self-blowing foa... 详细信息

关键词： Biofoams tannins tannin-furanic tannin-carbohydrates,nonisocyanate polyurethanes(NIPU)