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Do subtropical grasslands recover spontaneously after afforestation?

Journal of Plant Ecology 2019年第2期12卷 228-234页

作者： Fábio Piccin Torchelsen monica cadenazzi Gerhard Ernst Overbeck Departamento de Botânica Instituto de BiociênciasUniversidade Federal do Rio Grande do Sul-UFRGSAv.Bento Gonçalves 9500-Bloco IV-Prédio 43433Porto AlegreRSCEP 91501-970Brazil Facultad de Agronomía Universidad de La Republica-UdelaRPaysandúUruguay

Aims South American Pampa grasslands are habitats of great conservation interest,with a distinct and rich flora,but have been intensely con-verted to other land uses,including tree *** neces-sity for restoration grows,no information on restoration potential of grasslands after afforestation ***,we aim at analyzing composition and structure of grassland vegetation with a history of eucalyptus plantations in order to assess recovery potential of these *** hypothesized that areas with history of eucalyptus would differ from reference grasslands with no history of land-use change in terms of floristic and functional composition and would present lower species *** Our study region comprised four sites in the southeastern part of the Pampa biome,in the coastal plain in the extreme south of Brazil,always with sites with long(50 years)history of eucalyptus plantation and reference *** sampled vegetation at post-eucalyptus sites(with and without resprouting)10 years after clear-clutting and in natural *** analyzed data by analysis of variance and ordination techniques,considering compositional parameters and life forms,and indicator species *** Findings Species richness and vegetation cover were higher in reference grassland than in resprout areas but did not differ from post-eucalyp-tus *** species cover was significantly higher in areas with afforestation *** terms of total composition,natural grasslands differed significantly from areas with past plantation *** species analyses revealed considerable differences between grass-land *** conclusion,vegetation development led to grassland communities that are still quite distinct from reference ***,the specificity of grassland management has a high importance in defining vegetation trajectories in time and importance for grassland recovery,and restoration needs to be addressed in more studies.

关键词： Campos Sulinos conservation Pampa restoration southern Brazil vegetation management

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解压指南

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健与美 2025年第1期 169-173页

作者： monica

不摧毁压力，就会被压力摧毁。如果你总是感觉充满压力——无论是内在的还是外在的，就不可能长期保持健康和健美。本文将帮助你从压力的奴隶，变成压力的老板。要怪就怪那些不断发送短信、提醒音和电子邮件给我们的智能手机，要怪就怪...

不摧毁压力，就会被压力摧毁。如果你总是感觉充满压力——无论是内在的还是外在的，就不可能长期保持健康和健美。本文将帮助你从压力的奴隶，变成压力的老板。要怪就怪那些不断发送短信、提醒音和电子邮件给我们的智能手机，要怪就怪拥挤的地铁、高速公路和大卖场吧，要怪就怪大萧条、全球变暖、网络泡沫，或者你手上那杯不便宜的拿铁咖啡吧。

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减量增效中级水平选手的最佳训练模式

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健与美 2025年第1期 160-163页

作者： monica

本文是受到奥赛冠军多里安·耶茨在1983～1986年期间的训练计划的启发而产生的。对于自然健美运动员来说，最大的错误就是训练量太大。如果你目前的训练效果不尽人意，不妨试试下面的增肌策略，效果很可能比你以前采用的方法更好。

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Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

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Chinese Physics B 2019年第8期28卷 355-363页

作者： monica Gambhir Vinod Prasad Department of Physics Swami Shraddhanand CollegeUniversity of DelhiDelhi 110036India Departmento de Quimica Universidad Autonoma MetropolitansSan Rafael Atlixco No186IztapalapaMexico DF 09340Mexico

Multiphoton excitations and nonlinear optical properties of exciton states in GaAs/AlxGa1-xAs coupled quantum well structure have been theoretically investigated under the influence of a time-varying high-intensity terahertz(THz)laser ***-perturbative Floquet theory is employed to solve the time-dependent equation of motion for the laser-driven excitonic quantum well *** response to the field parameters,such as intensity and frequency of the laser electric field on the state populations,can be used in various optical semiconductor device applications,such as photodetectors,sensors,all-optical switches,and terahertz emitters.

关键词： quantum well excitons terahertz non-perturbative multiphoton laser Floquet

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Estimation of the behavior factor of existing RC-MRF buildings

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Earthquake Engineering and Engineering Vibration 2018年第1期17卷 191-204页

作者： Marco Vona monica Mastroberti School of Engineering University of Basilicata

In recent years, several research groups have studied a new generation of analysis methods for seismic response assessment of existing buildings. Nevertheless, many important developments are still needed in order to define more reliable and effective assessment procedures. Moreover, regarding existing buildings, it should be highlighted that due to the low knowledge level, the linear elastic analysis is the only analysis method allowed. The same codes（such as NTC2008, EC8） consider the linear dynamic analysis with behavior factor as the reference method for the evaluation of seismic demand. This type of analysis is based on a linear-elastic structural model subject to a design spectrum, obtained by reducing the elastic spectrum through a behavior factor. The behavior factor（reduction factor or q factor in some codes） is used to reduce the elastic spectrum ordinate or the forces obtained from a linear analysis in order to take into account the non-linear structural capacities. The behavior factors should be defined based on several parameters that influence the seismic nonlinear capacity, such as mechanical materials characteristics, structural system, irregularity and design procedures. In practical applications, there is still an evident lack of detailed rules and accurate behavior factor values adequate for existing buildings. In this work, some investigations of the seismic capacity of the main existing RC-MRF building types have been carried out. In order to make a correct evaluation of the seismic force demand, actual behavior factor values coherent with force based seismic safety assessment procedure have been proposed and compared with the values reported in the Italian seismic code, NTC08.

关键词： seismic behavior existing buildings seismic safety assessment behavior factor

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On Standard Invariants of Bi-polymatroidal Ideals

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Algebra Colloquium 2014年第2期21卷 267-274页

作者： monica La Barbiera University of Messina Department of'Mathematics Viale Ferdinando Stagno d'Aleontres 31 98166 Messina Italy

The standard invariants of the bi-polymatroidal ideals of Veronese type are computed.

关键词： bi-polymatroidal ideals linear quotients

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Gallstones in patients with liver cirrhosis:Incidence,etiology,clinical and therapeutical aspects

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World Journal of Gastroenterology 2014年第23期20卷 7277-7285页

作者： monica Acalovschi 3~(rd) Medical Clinic University of Medicine and Pharmacy400162 Cluj-NapocaRomania

Gallstones occur in about one third of the patients having liver *** gallstones are the most frequent type,while cholesterol stones represent about15%of all stones in *** secretion of unconjugated bilirubin,increased hydrolysis of conjugated bilirubin in the bile,reduced secretion of bile acids and phospholipds in bile favor pigment lithogenesis in *** hypomotility also contributes to *** most recent data regarding risk factors for gallstones are *** prevalence increases with age,with a ratio male/female higher than in the general *** alcoholism,viral C cirrhosis,and non-alcoholic fatty liver disease are the underlying liver diseases most often associated with *** are often asymptomatic,and discovered *** asymptomatic,expectant management is recommended,as for asymptomatic gallstones in the general ***,a closer follow-up of these patients is necessary in order to earlier treat symptoms or *** symptomatic stones,laparoscopic cholecystectomy has become the therapy of ***-Pugh class and MELD score are the best predictors of outcome after *** with severe liver disease are at highest surgical risk,therefore gallstone complications should be treated using noninvasive or minimally invasive procedures,until stabilization of the patient condition.

关键词： Liver cirrhosis Pigment gallstones Cholesterol gallstones Lithogenesis Risk factors Asymptomatic gallstones Laparoscopic cholecystectomy

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Clustering spatio-temporal bi-partite graphs for finding crowdsourcing communities in IoMT networks

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Big Earth Data 2021年第1期5卷 24-48页

作者： Kaine Black monica Wachowicz Department of Geodesy and Geomatics Engineering University of New BrunswickFrederictonCanada School of Geospatial Science RMIT UniversityMelbourneAustralia

The Internet of Moving Things is rapidly becoming a reality where intelligent devices and infrastructures are fostering real-time data sus-tainability in smart cities and advancing crowdsourced tasks to improve energy consumption,waste management,and traffic *** intelligent devices create a complex network scenario in which they often move together or in conjunction with one another to complete crowdsourced *** research premise is that mobility relationships matter when performing these tasks,and therefore,a graph model based on representing the changes in mobility relation-ships is needed to help identify the neighbour devices that are moving close to one another in our physical world but also seamlessly con-nected in their virtual *** propose a bi-partite community mobility graph model for linking intelligent devices in both virtual and physical worlds,as well as reaching a trade-off between crowd-sourced tasks designed with explicit and implicit citizen *** paper aims to explore a bi-partite graph as a promising spatiotemporal representation of IoMT networks since changes in mobility relationships over time can indicate volunteer organisation at the device and community *** Louvain community detection method is proposed to find communities of intelligent devices to reveal a value conscious participation of *** proposed bi-partite graph model is evaluated using a real-world scenario in transportation,confirming the main role of evolving communities in developing crowdsourcing IoMT networks.

关键词： Bi-partite graph modelling Internet of Moving Things crowdsourcing

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Algebraic Properties of Universal Squarefree Lexsegment Ideals

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Algebra Colloquium 2016年第2期23卷 293-302页

作者： Marilena Crupi monica La Barbiera University of Messina Department of Mathematics and Computer Science Viale Ferdinando Stagno d'Alcontres 31 98166 Messina Italy

Let K be a field and let A = K[X1,...,Xn] be the polynomial ring in X1, ..., Xn with coefficients in K. In this paper we study the universal squarefree lexsegment ideals, and put our attention on their combinatorics computing some invariants. Moreover, we study the link between such a special class of squarefree lexsegment ideals and the so-called s-sequences.

关键词： monomial ideals squarefree lexicographic ideals minimal resolutions s-sequences standard invariants

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Shear-induced particle segregation in binary mixtures:Verification of a percolation theory

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Particuology 2021年第4期19卷 214-222页

作者： monica Tirapelle Silvia Volpato Andrea C.Santomaso APTLab-Advanced Particle Technology Laboratory Department of Industrial EngineeringUniversity of PadovaVia Marzolo 935131 PadovaItaly

Granular materials composed of different-sized grains may experience undesired *** is detrimental for a lot of industries because it leads to an increase in production costs and *** these reasons,the segregation phenomena have been intensively studied in the last decades,and a lot of models have been provided by many ***,these models are mainly based on empirical relations rather than physical *** paper aims to confirm the main assumptions made by Volpato,Tirapelle,and Santomaso(2020)in their percolation theory by means of DEM *** simulated geometry is a tilting shear box filled with few tracer particles in a bed of coarser sized grains,and simulations are performed for a range of tilting frequencies and size *** results provide meaningful insight on the mathematical model parameters and allow us to say that the percolation theory relies on physically consistent assumptions.

关键词： Discrete element method Shear-induced percolation Segregation Parameter sensitivity analysis Percolation model

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