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A novel approach to the dynamic response analysis of Euler-Bernoulli beams resting on a Winkler soil model and subjected to impact loads

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 389-401页

作者： adolfo Foriero Filippo Santucci de Magistris Giovanni Fabbrocino Département de génie civil et de génie des eaux Pavillon Adrien-PouliotUniversitéLavalQuébecCanada Dipartimento di Bioscienze e Territorio Universitàdegli Studi del MoliseCampobassoItaly Construction Technologies Institute National Research CouncilITC-CNRL’AquilaItaly

This work presents a novel approach to the dynamic response analysis of a Euler-Bernoulli beam resting on a Winkler soil model and subjected to an impact *** approach considers that damping has much less importance in controlling the maximum response to impulsive loadings because the maximum response is reached in a very short time,before the damping forces can dissipate a significant portion of the energy input into the *** development of two sine series solutions,relating to different types of impulsive loadings,one involving a single concentrated force and the other a distributed line load,are *** study revealed that when a simply supported Euler-Bernoulli beam,resting on a Winkler soil model,is subject to an impact load,the resulting vertical displacements,bending moments and shear forces produced along the span of the beam are considerably *** particular,the quantification of this effect is best observed,relative to the corresponding static solution,via an amplification *** computed impact amplification factors,for the sub-grade moduli used in this study,were in magnitude greater than 2,thus confirming the multiple-degree-of-freedom nature of the problem.

关键词： beam-Winkler-soil model sub-grade moduli impact load impact distributed line load dynamic solution impact amplification factor

Effect of strength training on knee proprioception in patients with knee osteoarthritis:A systematic review and meta-analysis

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Sports Medicine and Health Science 2024年第2期6卷 101-110页

作者： Francisco Guede-Rojas Alexis Benavides-Villanueva Sergio Salgado-Gonzalez Cristhian Mendoza Gonzalo Arias-Alvarez adolfo soto-Martínez Claudio Carvajal-Parodi Exercise and Rehabilitation Sciences Institute School of Physical TherapyFaculty of Rehabilitation SciencesUniversidad Andres BelloSantiago7591538Chile Universidad San Sebastian Programa Magíster en Kinesiología Musculoesquel eticaLientur#1457ConcepcionChile Universidad San Sebastian Laboratorio de Neurobiología.Facultad de Odontología y Ciencias de la Rehabilitaci onLientur#1457ConcepcionChile Universidad San Sebastian Escuela de KinesiologíaFacultad de Odontología y Ciencias de la Rehabilitaci onLientur#1457ConcepcionChile Departamento de Kinesiología Facultad de MedicinaUniversidad de ConcepcionConcepcion4030000Chile

Proprioception is significantly impaired in knee osteoarthritis(KOA),contributing to reduced *** training(ST)is essential in KOA by improving muscle strength,although it may also be effective in improving *** purpose was to determine the effect of ST on knee proprioception in KOA ***,CINAHL,Scopus,WOS,and PEDro were searched for randomized controlled trials(RCTs)(inception to March 2023).Comparisons for ST were physical exercise different from ST,non-exercise-based interventions,and no *** quality was assessed using the PEDro scale,and risk of bias(RoB)using the Cochrane ***-analyses were performed by comparison groups using the standardized mean difference(SMD)(Hedge's g)with random effects models,also considering subgroups by proprioception ***,six RCTs were *** mean PEDro score was 6.3,and the highest proportion of biases corresponds to per-formance,selection,and *** meta-analysis indicated that only when compared with non-intervention,ST significantly improved knee proprioception for the joint position sense(JPS)(activeþpassive),JPS(passive),and threshold to detect passive motion(TTDPM)subgroups(g=-1.33[-2.33,-0.32],g=-2.29[-2.82,-1.75]and g=-2.40[-4.23,-0.58],respectively).However,in the knee JPS(active)subgroup,ST was not significant(g=-0.72[-1.84,0.40]).In conclusion,ST improves knee proprioception compared to ***,due to the paucity of studies and diversity of interventions,more evidence is needed to support the effectiveness of *** RCTs may address the limitations of this review to advance knowledge about pro-prioceptive responses to ST and contribute to clinical practice.

关键词： Osteoarthritis Knee Proprioception Resistance training

Is it possible to anchor a tooth with photobiomodulation?

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World Journal of Clinical Cases 2024年第5期12卷 872-874页

作者： Angela dominguez Department of Orthodontics Faculty of DentistryBenemerita Universidad Autónoma de PueblaZaragoza de Puebla Calle 4 Sur 104PueblaMexico

During orthodontic treatment,we can achieve differential movements by using photobiomodulation(PBM)as an adjuvant before applying *** can expect a greater bone density that initially resists movement while applying PBM to the other teeth to achieve an accelerating *** proposed protocol is to use an 810 nm laser at 0.1W power,applying between 4 and 6J per tooth for 22 s on the vestibular and lingual root surfaces,following the axial axis of the *** energy density depends on the tip selected in the *** bone remodeling cannot be avoided by applying high doses of *** should be applied before orthodontic force to reduce tooth *** addition,PBM can be used during force application to teeth that require acceleration to achieve differential movement in orthodontic *** protocol is the same in both scenarios.

关键词： Photobiomodulation Orthodontic movement Diode laser PBM Anchorage in orthodontics

HVSR analysis of pumice sands for sediment depth characterization:A case study for Guadalajara,Mexico

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 577-591页

作者： Hafid Salgado M. Alejandro Ramírez-Gaytan adolfo Preciado Christian R.Escudero Departamento de Ciencias Exactas Centro Universitario de la CostaUniversidad de GuadalajaraCP.48280 Puerto VallartaJaliscoMéxico Departamento de Ciencias Computacionales Centro Universitario de Ciencias Exactas e IngenieríaUniversidad de GuadalajaraCP.44430 GuadalajaraJaliscoMéxico Departamento del Hábitat y Desarrollo Urbano Instituto Tecnológico y de Estudios Superiores de Occidente(ITESO)CP.45604 TlaquepaqueMéxico

The horizontal to vertical spectral ratio(HVSR)methodology is used here to characterize pumice soils and to image the three-dimensional surface geometry of Guadalajara,*** to other Latin American cities,Guadalajara is exposed to high seismic risk,with the particularity of being the largest urban settlement in Latin America built on pumice *** has not yet been tested to characterize subsoil depths in pumice *** to the questionable use of traditional geotechnical tests for the analysis of pumice soils,HVSR provides an alternative for its characterization without altering its fragile and porous *** this work,resonance frequency(F0)and peak amplitude(A0)are used to constrain the depth of the major impedance contrast that represents the interface between bedrock and pumice *** were compared with borehole depths and other available geotechnical and geophysical data and show good *** of the profiles estimated on the riverbanks that cross the city,reveals different subsoil thickness that could have an impact on different site responses on riverine areas to an eventual *** and academic efforts are combined in this work to characterize depth sediments,an important parameter that impacts the regulations for construction in the city.

关键词： subsoil of Guadalajara shallow soil thickness bedrock depth pumice soil characterization

Endoscopic treatment of scarred polyps with a non-thermal device(Endorotor):A review of the literature

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World Journal of Gastroenterology 2024年第12期30卷 1706-1713页

作者： Mariam Zaghloul Hameed Rehman Stefano Sansone Konstantinos Argyriou adolfo Parra-Blanco Department of Hepatology Gastroenterology and Infectious DiseasesKafrelsheikh UniversitKafr-Elshikh 33516Egypt Department of Gastroenterology Service Nottingham City Hospital CampusNottingham University Hospitals NHS TrustNottingham NG51PBUnited Kingdom Department of Gastroenterology University Hospital of LarissaLarissa 41334Greece NIHR Nottingham Biomedical Research Centre Nottingham University Hospitals NHS Trust and University of NottinghamNottingham NG72UHUnited Kingdom

Endoscopic resection(ER)of colorectal polyps has become a daily practice in most endoscopic units providing a colorectal cancer screening program and requires the availability of local experts and high-end endoscopic *** procedures have evolved over the past few years from endoscopic mucosal resection(EMR)to more advanced techniques,such as endoscopic submucosal dissection and endo-scopic full-thickness *** resection and disease eradication are the ultimate goals of ER-based techniques,and novel devices have been developed to achieve these *** EndoRotor®Endoscopic Powered Resection System(Interscope Medical,Inc.,Northbridge,Massachusetts,United States)is one such *** EndoRotor is a powered resection tool for the removal of alimentary tract mucosa,including post-EMR persistent lesions with scarring,and has both CE Mark and FDA *** review covers available published evidence documenting the usefulness of EndoRotor for the management of recurrent colorectal polyps.

关键词： EndoRotor Scarred polyps Recurrent polyps Colorectal cancer Colorectal polyps

Existing and emerging biomarkers in hepatocellular carcinoma:relevance in staging,determination of minimal residual disease,and monitoring treatment response:a narrative review

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Hepatobiliary Surgery and Nutrition 2024年第1期13卷 39-55页

作者： Dana A.dominguez Paul Wong Laleh G.Melstrom Department of Surgical Oncology City of Hope National Medical CenterDuarteCAUSA University of California San FranciscoSan FranciscoCAUSA

Background and Objective:With the development of novel active systemic therapies,the landscape of hepatocellular carcinoma(HCC)management is rapidly ***,HCC lacks sensitive and specific biomarkers to predict prognosis,monitor for minimal residual disease after locoregional therapy,and predict treatment *** this review,we aim to summarize the best supporting evidence for refining existing,and development of novel biomarkers for staging,prognosis,determination of minimal residual disease and monitoring treatment response in HCC,focusing on those with evidence in clinical ***:PubMed and Embase databases were searched using the keywords;hepatocellular carcinoma,biomarker,minimal residual disease,surveillance,prognosis,staging,alpha-fetoprotein(AFP),liquid biopsy,treatment response,adjuvant,*** clinical studies were *** Content and Findings:AFP remains the major workhorse as the most widely used biomarker in HCC,however,its lack of wide applicability due to the high proportion of patients with HCC who are AFP negative,limits its value throughout all stages of HCC *** work has been done to combine AFP with other clinical and serologic factors to increase its accuracy and utility as a ***,it is likely that other more novel biomarkers such as those obtained through liquid biopsy will provide the prognostic power necessary for applications such as detecting recurrence and predicting treatment *** biopsy provides not only a wealth of potential biomarkers including circulating tumor cells and cell-free RNA/DNA,but also the ability to examine the mutational characteristics of the tumor with next generation *** early evidence supports the potential impact of many new biomarkers,validation in large clinical trials is ***:This review highlights the paucity of sensitive and specific,widely applicable biomarkers,throughout all phases of management of

关键词： Hepatocellular carcinoma(HCC) biomarker liquid biopsy alpha-fetoprotein(AFP)

Freeze-thaw cycles and associated geomorphology in a post-glacial environment:current glacial,paraglacial,periglacial and proglacial scenarios at Pico de Orizaba volcano,Mexico

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Journal of Mountain Science 2024年第6期21卷 1954-1977页

作者： Víctor soto Carlos M.WELSH R. Kenji YOSHIKAWA Hugo DELGADO GRANADOS Centro de Ciencias de la Tierra Universidad VeracruzanaCircuito Gonzalo Aguirre BeltránS/NZona Universitaria91090XalapaMéxico Water and Environmental Research Center University of Alaska FairbanksFairbanksAlaska 99775USA Instituto de Geofísica Universidad Nacional Autónoma de MéxicoCiudad de México 04150México Department of Earth and Environmental Sciences Ludwig Maximilians UniversitätMunich 80333Germany

The glacial history of Pico de Orizaba indicates that during the Last Glacial Maximum,its icecap covered up to~3000 m asl;due to the air temperature increasing,its main glacier has retreated to 5050 m *** retraction of the glacier has left behind an intense climatic instability that causes a high frequency of freeze-thaw cycles of great intensity;the resulting geomorphological processes are represented by the fragmentation of the bedrock that occupies the upper parts of the *** is a notable lack of studies regarding the fragmentation and erosion occurring in tropical high mountains,and the associated geomorphological risks;for this reason,as a first stage of future continuous research,this study analyzes the freezing and thawing cycles that occur above 4000 m asl,through continuous monitoring of surface ground *** results allow us to identify and characterize four zones:glacial,paraglacial,periglacial and *** was found that the paraglacial zone presents an intense drop of temperature,of up to~9℃ in only sixty *** rock fatigue and intense freeze-thaw cycles that occur in this area are responsible for the high rate of rock disintegration and represent the main factor of the constant slope dynamics that occur at the *** activity decreases,both in frequency and intensity,according to the distance to the glacier,which is where the temperature presents a certain degree of stability,until reaching the proglacial zone,where cycles are almost non-existent,and therefore there is no gelifraction *** geomorphological processes have resulted in significant alterations to the mountain slopes,which can have severe consequences in terms of risk and water.

关键词： Freeze-Thaw Gelifraction Mountain mechanical erosion Periglacial geomorphology Postglacial scenarios

A new look at the first dinosaur discovered in Antarctica:reappraisal of Antarctopelta oliveroi(Ankylosauria:Parankylosauria)

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Advances in Polar Science 2024年第1期35卷 78-107页

作者： Sergio soto ACUÑA Alexander OVARGAS Jonatan KALUZA Red Paleontológica U-Chile Departamento de BiologíaFacultad de CienciasUniversidad de ChileÑuñoa 7800003Chile Escuela de Geología Facultad de CienciasIngeniería y TecnologíaUniversidad MayorProvidenciaSantiago 7500994Chile Fundación de Historia Natural Félix de Azara Universidad MaimónidesBuenos Aires C1405Argentina Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET) Buenos Aires C1425FQBArgentina

The first dinosaur discovered in the Antarctic continent was the ankylosaur Antarctopelta oliveroi in the ***,since then several hypotheses of phylogenetical relationships have been proposed because these have been depended on how the skeletal remains have been *** main obstacle for clarifying its phylogenetic position is that many portions of the skeleton remain unknown,in addition to the presence of unknown characters in typical *** an ankylosaurid,nodosaurid,or even a chimaera,a recent proposal based on mostly complete material of a new ankylosaur from Chilean Patagonia provided support for a novel phylogenetic hypothesis:Antarctopelta and other southern ankylosaurs are an early branching clade,the Parankylosauria,whose origin probably dates to the Late *** the light of this new view,a redescription of the available skeletal remains is provided together with a new reconstruction of the first Antarctic dinosaur known to the science community.

关键词： Antarctic Peninsula Biogeographic Weddellian Province Parankylosauria Antarctopelta

Changes in call properties of Boana pulchella (Anura, Hylidae) in response to different noise conditions

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Current Zoology 2024年第4期70卷 548-556页

作者： Pablo Grenat Maria Ferrero Mariana Baraquet Favio Pollo Manuel Otero Zulma Salinas Nancy Salas adolfo Martino Ecologia Departamento de Ciencias NaturalesFacultad de Ciencias ExactasFisico-Quimicas y NaturalesUniversidad Nacional de Rio CuartoRutaNacional N°36-km601X5804BYARioCuartoArgentina lnstituto de Ciencias de la Tierra Biodiversidad y Ambiente(ICBIA)UNRC-CONICETRuta Nacional N°36-km 601X5804BYARio CuartoArgentina Cátedra de Botanica General Departamento de Recursos Naturales y AmbienteFacultad de AgronomiaUniversidad de Buenos AiresAv.San Martin 4453Buenos AiresArgentina

The increasing expansion of urban areas leads to the emergence of new noisy environments that can affect animal *** play a crucial role in the mating displays of anurans,and the negative impact of anthropogenic noise-induced auditory masking has been reported in several *** investigated the acoustic variation in 96 males(n=971 calls)of the treefrog Boana pulchella across acoustically undis-turbed sites and different noise conditions,associated with urban areas(URBAN)and roads(ROAD),in Central *** analyzed the effect of anthropogenic noise conditions on 6 temporal(call duration[CD],intercall interval,first and second note duration,internote interval,and call rate)and 3 spectral(dominant frequency of first and second note,frequency difference between them)call *** effects of temperature and size on acoustical variables were *** observed differences in all call attributes among the noise conditions,except for intercall *** exposed to URBAN and ROAD exhibited significant changes in CD,dominant frequency of the second note,and fre-quency difference between *** males had longest internote interval,while ROAD individuals displayed increased first and second note duration and call ***,ROAD males exhibited immediate changes in call rate in direct response to passing heavy *** study emphasizes the impact of anthropogenic noise on the acoustic characteristics of *** *** how animals adapt to noisy environments is crucial in mitigating the adverse effects of urbanization on their communication *** investigations should explore whether the observed call adjustments are effective in avoiding or mitigating the negative consequences of anthropogenic noise on reproductive success.

关键词： acoustic communication advertisement call auditory masking noise pollution road traffic noise.