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Historical relationships of the Mesoamerican highlands,with emphasis on tropical montane cloud forests:a temporal cladistic biogeographical analysis

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Journal of Mountain Science 2023年第1期20卷 129-140页

作者： CASTRO-TORREBLANCA Marisol ESPINOSA David BUENO-HERNANDEZ alfredo LUNA-VEGA Isolda Biological Sciences Graduate Program Coordination of Graduate StudiesNational Autonomous University of MexicoUniversity CityCoyoacán04510Mexico CityMexico Comparative Biology and Biodiversity Research Unit Facultad de Estudios Superiores ZaragozaNational Autonomous University of MexicoAv.Batalla del 5 de mayo s/nCol.Ejército de Oriente09230Mexico CityMexico Laboratory of Biogeography and Systematics Department of Evolutionary BiologyFaculty of SciencesNational Autonomous University of MexicoUniversity CityCoyoacán04510Mexico CityMexico

The historical relationships of nine areas of endemism of the tropical montane cloud forests(TMCFs)were analysed based on a temporal cladistic biogeographical *** cladistic biogeographical analyses were conducted based on 29cladograms of terrestrial taxa by partitioning them into three time-slices,namely,Miocene,Pliocene,and *** results showed different area relationships over *** the Miocene and Pliocene time slices,the Isthmus of Tehuantepec acted as a geographic barrier that fragmented the TMCFs into two portions:west of the Isthmus and east of the *** the case of the Pleistocene,the TMCFs were broken into two portions,one related to the Neotropical region and the other to the Nearctic ***,the analyses allowed us to detect the influences of different geological and paleoclimatological events on the distribution of the TMCFs over ***,the TMCFs current distribution might have been driven by geological events during the Miocene-Pliocene,whereas climatic fluctuations have the highest impact during the Pleistocene.

关键词： Dispersal Evolutionary biogeography Paralogy free subtree analysis Vicariance

Impact of chronic kidney disease on mortality in older adults treated with pacemaker implantation

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Journal of Geriatric Cardiology 2017年第10期14卷 597-603页

作者： Fabio Fabbian alfredo De Giorgi Matteo Guarino Michele Malagu Matteo Bertini Department of Medical Sciences Clinical Medical Unit University Hospital St. Anna University of Ferrara Ferrara Italy Department of Medical Sciences Cardiology Unit University Hospital St. Anna University of Ferrara Ferrara Italy

Objective To investigate whether chronic kidney disease could negatively impact survival in older adults needing pacemaker implantation after admission for bradyarrhythmias. Methods This retrospective observational study considered 538 older adults consecutively admitted, who had been followed-up for 31 ± 20 months. Subjects with poor short-term prognosis were excluded. Charlson comorbidity index （CCI） and estimated glomerular filtration rate （eGFR） was calculated, along with the independent relationship between all-cause mortality and clinical data. Hazard Ratio （HR） was calculated by Cox regression analysis. Results Mean age of the population was 85 ± 3.7 years, and causes for implantation were atrioventricular block in 51.9% and other bradyarrhythmias in 48.1% of cases. Mean eGFR was 58.3 ± 24 mL/min per 1.73 m2, and mean CCI was 3.65 ± 2.28. Death for all-causes was recorded in 213 subjects. Deceased patients were older, had lower eGFR, higher comorbidity, higher prevalence of myocardial infarction, congestive heart failure, cerebrovascular disease, dementia and chronic pulmonary disease. Age （HR： 1.081, 95% CI： 1.044-1.119; P 〈 001）, CCI （HR： 1.651, 95% CI： 1.286-2.121, P 〈 001） and eGFR 〈 45 mL/min per 1.73 m2 （HR： 1.360, 95% CI： 1.024-1.806; P = 0.033） were predictors of death. Conclusions Renal dysftmction, as well as comorbidity, impacts negatively survival of older adults treated with pacemaker implantation because of bradyarrhythmias.

关键词： Bradyarrhythmias Charlson comorbidity index Chronic kidney disease Comorbidity Glomerular filtration rate Mortality Pacemaker

Litter production and leaf nutrient concentration and remobilization in response to climate seasonality in the central Amazon

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Journal of Forestry Research 2024年第3期35卷 131-141页

作者： Ricardo Antonio Marenco Saul alfredo Antezana-Vera Daniela Pereira Dias Luiz Antonio Candido Instituto Nacional de Pesquisas da Amazonia Coordenagao de Uso da Terra e Mudanca ClimaticaAv.Andre Araujo 2936ManausAM69067-375Brazil Programa de pos-Graduagao em Agricultura no Tropico Umido Instituto Nacional de Pesquisas da Amazonia-INPAManausAMBrazil Unidade Academica de Ciencias Agrarias Universidade Federal de JataiBR 364km 195JataiGO 75801-615Brazil

Litterfall is the largest source of nutrients to for-est soils of tropical ***,variability in lit-terfall production,nutrient remobilization,and changes in leaf nutrient concentration with climate seasonality remain largely unknown for the central *** study meas-ured litterfall production,leaf nutrient remobilization,and leaf area index on a forest plateau in the central *** was measured at monthly intervals during 2014,while nitrogen,phosphorus,potassium,calcium and mag-nesium concentrations of leaf litter and canopy leaves were measured in the dry and rainy seasons,and remobilization rates *** area index was also recorded in the dry and rainy *** litterfall varied from 33.2(in the rainy season)to 87.6 g m^(-2) in the dry season,while leaf area index increased slightly in the rainy *** seasonality had no effect on concentrations of nitrogen,calcium,and magnesium,whereas phosphorous and potassium responded to rainfall seasonality *** phosphorous increased,potassium decreased during the dry *** seasons,nitrogen,potassium,and phosphorous decreased in leaf litter;calcium increased in leaf litter,while magnesium remained unaffected with leaf ***,the five nutrients had similar remobilization rates over the *** absence of climate seasonality on nutrient remobilization suggests that the current length of the dry season does not alter nutrient remobilization rates but this may change as dry periods become more prolonged in the future due to climate change.

关键词： Throughfall Nutrient cycling Climatic seasonality Leaf mass per area

Evidence for maternal transmission of a putative endosymbiont in the digestive gland of Pomacea canaliculata(Architaenioglossa,Ampullariidae)

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BIOCELL 2017年第2期41卷 59-61页

作者： EDUARDO KOCH ISRAEL A.VEGA alfredo CASTRO-VAZQUEZ Departamento de Biología Universidad Nacional de CuyoFacultad de Ciencias Exactas y Naturales Instituto Argentino de Investigaciones de las Zonas Aridas(IADIZA-CCT-Mendoza) Instituto de Fisiología Universidad Nacional de CuyoFacultad de Ciencias Médicas IHEM Universidad Nacional de CuyoCONICET

The digestive gland of the apple snail Pomacea canaliculata lodges two types of pigmented corpuscles(identified as C and K corpuscles)which has been proposed as endosymbiont/*** corpuscular types are always present in the digestive gland of adult snails,they are released into the tubuloacinar lumen and are later expelled in the *** their part,hatchlings lack any C or K corpuscles in the digestive gland as well as in their feces,whereas C corpuscles appear in both the gland and feces within one week after ***,it is possible that the detritivorous hatchlings acquire the putative C-endosymbiont from feces in the sediments where they live,***‘lateral’or‘horizontal’*** possibility was put to test in an experiment in which we prevented any lateral transmission,by a 7-days aseptic culture,with no food,of aseptically obtained *** the end of the experiment,we observed that most juveniles had survived the culture period,and hence the digestive glands and feces of survivors were studied by light microscopy of resin embedded,toluidine blue-stained *** studied glands and fecal samples showed C *** is concluded that lateral transmission of the endosymbiont,if any,is not indispensable for the acquisition of the endosymbiont by hatchlings.

关键词： Pigmented corpuscles Ampullariidae Endosymbiosis Coevolution

A Controller-Based Architecture for Information Centric Network Construction and Topology management

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China Communications 2018年第7期15卷 131-145页

作者： Zeinab Zali Massoud Reza Hashemi Ilaria Cianci alfredo Grieco Gennaro Boggia Department of Electrical and Computer Engineering Isfahan University of Technology DEI Dep.of Electrical and Information Engineering

Information-Centric Networking(ICN) has recently emerged as a result of the increased demand to access contents regardless of their location in the network services. This new approach facilitates content distribution as a service of the network with lower delay and higher security in comparison with the current IP network. Applying ICN in current IP infrastructure leads to major complexities. One approach to deploy ICN with less complexity is to integrate ICN with Software Defined Networking(SDN). The SDN controller manages the content distribution, caching, and routing based on the users' requests. In this paper, we extend these context by addressing the ICN topology management problem over the SDN network to achieve an improved user experience as well as network performance. In particular, a centralized controller is designed to construct and manage the ICN overlay. Experimental results indicate that this adopted topology management strategy achieves high performance, in terms of low failure in interest satisfaction and reduced download time compared to a plain ICN.

关键词： ICN SDN controller topology management overlay networks

New Framework Based on Fusion Information from Multiple Landslide Data Sources and 3D Visualization

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Journal of Earth Science 2020年第1期31卷 159-168页

作者： Fermin Villalpando Jose Tuxpan Jose alfredo Ramos-Leal Simon Carranco-Lozada Division of Applied Geosciences Scientific and Technological Research Institute of San Luis PotosiSan Luis Potosi 78216Mexico Catedras-CONA CyT National Council for Science and TechnologyCDMX 03940Mexico Centre for Scientific and Technological Studies National Polytechnic InstituteGuanajuato 37358Mexico

Recent monitoring techniques employ multiple sources of information for the characterization of the phenomenon to be studied, being the coupling and adjustment of multi-source data one of the first challenges to consider and solve. The authors propose a new framework of the multi-source and multi-temporal data-oriented fusion for the characterization of landslide events. The main objective is to generate 3D virtual models(in the form of dense point clouds) and feed them back with the characteristic of soil and subsoil information. The scheme consists of three main steps. The first one is on-site data collection(geological characterization, geophysical measurements, GPS measurements, and UAV/drone mapping). The second step is generation of a high-resolution 3D virtual model(~1-inch spatial resolution) from the frames acquired through the UAV using the structure of motion(SfM) processing;the developed virtual model is optimized with GPS measurements to minimize geolocation error and eliminate distortions. The last step is assembling of the acquired data in the field and densified point cloud considering the different nature of the data, re-escalating procedure and the information stacking layer.

关键词： 3D model natural risk geophysical/geological techniques unmanned aerial vehicle fusion data

Defensive medicine:It is time to finally slow down an epidemic

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World Journal of Clinical Cases 2018年第11期6卷 406-409页

作者： Sandro Vento Francesca Cainelli alfredo Vallone Department of Medicine Nazarbayev University University Medical Center Infectious Diseases Unit G.Jazzolino Hospital

Defensive medicine is widespread and practiced the world over, with serious consequences for patients, doctors, and healthcare costs. Even students and resi-dents are exposed to defensive medicine practices and taught to take malpractice liability into consideration when making clinical decisions. Defensive medicine is generally thought to stem from physicians' perception that they can easily be sued by patients or their relatives who seek compensation for presumed medical errors. However, in our view the growth of defensive medicine should be seen in the context of larger changes in the conception of medicine that have taken place in the last few decades, undermining the patient–physician trust, which has traditionally been the main source of professional satisfaction for physicians. These changes include the following: time directly spent with patients has been overtaken by time devoted to electronic health records and desk work; family doctors have played a progressively less central role; clinical reasoning is being replaced by guidelines and algorithms; the public at large and a number of young physicians tend to believe that medicine is a perfect science rather than an imperfect art, as it continues to be; and modern societies do not tolerate the inevitable morbidity and mortality. To finally reduce the increasing defensive behavior of doctors around the world, the decriminalization of medical errors and the assurance that they can be dealt with in civil courts or by medical organizations in all countries could help but it would not suffice. Physicians and surgeons should be allowed to spend the time they need with their patients and should give clinical reasoning the importance it deserves. The institutions should support the doctors who have experienced adverse patient events, and the media should stop reporting with excessive evidence presumed medical errors and subject physicians to "public trials" before they are eventually judged in court.

关键词： Adverse event Clinical reasoning Defensive medicine Doctor-patient relationship Healthcare cost Medical education Medical error

Complementarity of electric vehicles and pumped-hydro as energy storage in small isolated energy systems:case of La Palma,Canary Islands

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Journal of Modern Power Systems and Clean Energy 2016年第4期4卷 604-614页

作者： alfredo RAMIREZ-DIAZ Francisco J.RAMOS-REAL Gustavo A.MARRERO Departamento de Economı´a Contabilidad y FinanzasFacultad de Economı´aEmpresa y TurismoUniversidad de La Laguna38071 La LagunaSpain Instituto Universitario de Ciencias Polı´ticas y Sociales Universidad de La Laguna38071 La LagunaSpain Instituto Universitario de Desarrollo Regional Universidad de La Laguna38071 La LagunaSpain

Isolated energy systems in archipelagos are characterized for having a great dependence on fossil sources due to isolation and territorial *** island of La Palma is situated on the northwest of the Canary Islands,and its electric system is very *** policies planned by local authorities are aimed to increase the share of renewable energies and the reduction of fossil ***,intermittence and the concentration of unmanageable renewable energies in few locations may hinder the operation of the *** order to solve these problems,energy storage plays an essential *** aim of this paper is to analyse the effects of the introduction of two possible alternatives as a way of energy storage:pumped hydro storage and electric *** this,we use a simulation model adapted to the features of La Palma,considering different *** show that,in the most favourable scenario,the installation of an additional 25 MW from renewables(more than double the current power),supported by 20 MW of pumped hydro storage and a fleet of 3361 electric vehicles,would allow the current share of renewables to increase from11%(in 2015)to 49%.Furthermore,this would mean a 26%reduction in CO2 emissions,10%in costs of generated k Wh and 19%in energy dependence.

关键词： Energy storage Electric vehicles Vehicle-to-grid Grid-for-vehicles Pumped-hydro energy storage Isolated systems

On the sampling strategies and models for measuring diffusion exchange with a double diffusion encoding sequence

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Magnetic Resonance Letters 2023年第3期3卷 232-247,I0003页

作者： alfredo Ordinola Shan Cai Peter Lundberg Ruiliang Bai Evren Ozarslan Department of Biomedical Engineering(IMT) Link oping UniversityLink opingS-58185Sweden Department of Radiation Physics Department of HealthMedicine and Caring Sciences(HMV)Link oping UniversityLink opingS-58183Sweden Center for Medical Image Science and Visualization(CMIV) Link oping UniversityLink opingS-58185Sweden School of Medicine Zhejiang University866 Yuhangtang RdHangzhou310058China

Water exchange between the different compartments of a heterogeneous specimen can be characterized via diffusion magnetic resonance imaging(dMRI).Many analysis frameworks using dMRI data have been proposed to describe exchange,often using a double diffusion encoding(DDE)stimulated echo *** such as diffusion exchange weighted imaging(DEWI)and the filter exchange and rapid exchange models,use a specific subset of the full space DDE *** this work,a general representation of the DDE signal was employed with different sampling schemes(namely constant b1,diagonal and anti-diagonal)from the data reduction models to estimate exchange.A near-uniform sampling scheme was proposed and compared with the other sampling *** filter exchange and rapid exchange models were also applied to estimate exchange with their own subsampling *** subsampling schemes and models were compared on both simulated data and experimental data acquired with a benchtop MR *** synthetic data,the diagonal and near-uniform sampling schemes performed the best due to the consistency of their estimates with the ground *** experimental data,the shifted diagonal and near-uniform sampling schemes outperformed the others,yielding the most consistent estimates with the full space *** results suggest the feasibility of measuring exchange using a general representation of the DDE signal along with variable sampling *** future studies,algorithms could be further developed for the optimization of sampling schemes,as well as incorporating additional properties,such as geometry and diffusion anisotropy,into exchange frameworks.

关键词： Diffusion MRI Water exchange Sampling schemes Double diffusion encoding