bluuebunny/crossref_metadata_2025_split huggingface dataset:
La vegetación de Calakmul, Campeche, México: clasificación, descripción y distribución
Authors: Martínez Esteban , Galindo-Leal Carlos 
Published: January 2019

La región de Calakmul, en el centro de la península de Yucatán, es de gran importancia por contener el área forestal más extensa del trópico mexicano. El objetivo de este trabajo es presentar la clasificación, descripción y distribución espacial de las comunidades vegetales de la región de Calakmul. A pesar del escaso relieve topográfico de la región, la vegetación presenta una elevada heterogeneidad espacial. Las cinco asociaciones que destacan por su relevancia regional, nacional y mundial son la selva de guayacán (Guaiacum sanctum), la selva de jobillo (Astronium graveolens), la selva baja caducifolia, la selva alta y el bajo mixto. Se discuten las principales influencias sobre la vegetación de la región, incluyendo los gradientes de precipitación, el desarrollo del suelo, los disturbios naturales y el factor antropogénico. Se subraya la la necesidad de utilizar clasificaciones de vegetación suficientemente detalladas para evaluar la representatividad y la efectividad de las áreas naturales protegidas.
Estructura, composición florística y diversidad de especies leñosas de un bosque mesófilo de montaña en la Sierra de Manantlán, Jalisco
Authors: Sánchez-Rodríguez Enrique Valente , López-Mata Lauro , García-Moya Edmundo , Cuevas-Guzmán Ramón 
Published: January 2019

In this paper we describe the structure, floristic composition and woody (tree and shrub) species diversity of a cloud forest at Cuzalapa, Sierra de Manantlán, Jalisco. Two localities with four 2,500 m2 plots each were established at El Durazno and La Pareja. All species present in the plots were identified and recorded, and their diameters at breast height (DBH ? 3cm) and heights measured. Forest structure is described using the relative values of density and basal area; in addition, a diagram of forest profile was drawn for each plot. Among-plot similarity was assessed with Sørensen 's Index. Species diversity was evaluated using Shannon-Wiener 's, Simpson's, and Fisher's ? indexes. In the total sampled area (2 ha) 2,086 individuals belonging to 101 species (including two new records for the flora de la Sierra de Manantlán, Sapranthus foetidus and AIchornea latifolia), distributed in 75 genera and 44 farnilies, were recorded. The families with the largest numbers of species were: Leguminosae (8), Solanaceae and Fagaceae (7 each), Moraceae and Compositae (6 each), Lauraceae (5), and Rubiaceae (3). Tree density at El Durazno and La Pareja was 1,084 and 1,002 trees ha-', and basal area was 38.7 and 31.9 m2 ha-', respectively. At both localities, Styrax radians had the highest relative importance value. Forest structure and species composition at both localities correspond to tracks of transitional forest between early to intermediate stages, which results from recurrent anthro- pogenic disturbances such as logging 50 years ago. Species diversity in Cuzalapa is one of the highest ever recorded for cloud forests of Mexico, which presumably is a consequence of anthropogenic and natural disturbances. Both kind of disturbances are important forces in maintaining the structure, species composition, and high species diversity in this cloud forest.
Análisis estructural de un bosque mesófilo de montaña en el extremo oriental de la Sierra Madre del Sur (Oaxaca), México
Authors: Mejía-Domínguez Nancy R. , Meave Jorge A. , Ruiz-Jiménez Carlos A. 
Published: January 2019

Se analizó la estructura de la vegetación en una parcela de una hectárea de bosque mesófilo de montaña en Santo Tomás Teipan (Oaxaca, México). Considerando su ubicación marginal en el borde de una región de este tipo de vegetación en la Sierra Madre del Sur, se examinó la pregunta de si esta comunidad difería notablemente de otros bosques mesófilos propios de condiciones más adecuadas para esta formación vegetal. Cada individuo con diámetro a la altura del pecho (DAP) ?2.5 cm fue ubicado en un sistema de coordenadas; además, se anotó su identidad taxonómica y se le midió la cobertura de la copa, el DAP, y las siguientes alturas: total, a la primera ramificación y a la base de la copa. Los valores obtenidos de área basal (46.41 m2 ha-1), cobertura (44,247.33 m2 ha-1) y densidad (1,035 ind. ha-1) coinciden con los intervalos reportados para los bosques lluviosos montanos bajos (“lower montane rain forests”) de América tropical. Se diferenciaron dos estratos por su estructura y composición, uno inferior (2 a 11 m) y otro superior (11 a 30 m). La dominancia general correspondió a Cornus disciflora, especie del dosel superior. En la parcela se distinguieron dos condiciones topográficas: ladera baja de cañada y cima, a las que parecen asociarse características edáficas contrastantes. A pesar de que esta heterogeneidad topográfica contrasta con la homogeneidad estructural del bosque, se detectaron patrones agregados para algunas especies distribuidas preferencialmente en alguna de dichas condiciones. En términos estructurales, el bosque de Teipan es comparable con otros bosques similares, pero su diversidad es relativamente baja. Esto puede deberse a la ausencia de taxa presentes en las comunidades secas tropicales adyacentes, a diferencia de otros bosques mesófilos cuya flora se enriquece con elementos de las comunidades tropicales húmedas con las que colindan.
Aspectos ecológicos de dos cactáceas mexicanas amenazadas: implicaciones para su conservación
Authors: Álvarez Ricardo , Godínez-Álvarez Héctor , Guzmán Ulises , Dávila Patricia 
Published: January 2019

Strombocactus disciformis y Turbinicarpus pseudomacrochele son dos especies de cactáceas mexicanas amenazadas. En este trabajo se evaluaron diversos aspectos ecológicos de estas especies como la estructura de tamaños, la ocupación del hábitat, la germinación de las semillas y la supervivencia de las plántulas. Además, se determinaron las actividades humanas que posiblemente podrían afectar el mantenimiento de las poblaciones. Los resultados mostraron que ambas especies presentan estructuras poblacionales en las que el número de individuos pequeños es bajo. Ocupan hábitats particulares y la germinación de las semillas, así como la supervivencia de las plántulas, son bajas. Además, están sujetas al efecto de diversas actividades humanas tales como la colecta ilegal de plantas y semillas, la ganadería y la extracción de materiales para construcción. De todas estas actividades, la colecta ilegal de semillas es aparentemente una de las principales amenazas para el mantenimiento de las poblaciones de estas especies.
Flora bromeliológica del estado de Guerrero, México: riqueza y distribución
Authors: Pulido-Esparza Valeria Angélica , López-Ferrari Ana Rosa , Espejo-Serna Adolfo 
Published: January 2019

El estado de Guerrero resulta de especial interés por la singularidad de su flora bromeliológica, la cual presenta un alto porcentaje de endemitas. Con base en el estudio de 1,250 ejemplares herborizados correspondientes a 797 recolecciones y una detallada revisión bibliográfica, concluimos que la flora bromeliológica hasta ahora conocida para Guerrero consta de 88 especies y 11 géneros. Se registran por primera vez los géneros Racinaea y Ursulaea y las especies Catopsis berteroniana, Hechtia reflexa, Racinaea ghiesbreghtii, Tillandsia andrieuxii, T. gymnobotrya, T. magnusiana, T. marabascoensis, T. polystachia, T. rettigiana, T. tricolor y Ursulaea tuitensis. Los estados con una flora bromeliológica más parecida a la de Guerrero son Jalisco, Michoacán y Colima, seguidos por el Estado de México y Morelos. De los tipos de vegetación que prosperan en el estado, el que presenta una mayor riqueza bromeliológica es el bosque de Quercus con 42 taxa, seguido por los bosques tropical caducifolio con 33 y tropical subcaducifolio con 27. El tipo de vegetación con menor número de especies es el bosque de Juniperus. Se presenta un catálogo completo de la familia, incluyendo claves de identificación a nivel genérico y específico, y se hace un análisis de la representación de la familia en el estado, documentándose detalladamente la distribución de sus especies.
Notes on the flora of the Yucatan peninsula V: New records and miscellaneous notes for the family Leguminosae
Authors: Duno-de-Stefano Rodrigo , Rico-Arce Lourdes , Martínez-Bernal Angélica , Gutiérrez-Báez Celso 
Published: January 2019

Two novelties of the family Leguminosae, Acaciella villosa (Sw.) Britton et Rose and Zornia gemella Vogel, are reported for the first time from the Yucatan Peninsula Biotic Province. Additionally, information on two other little known species is included: Rhynchosia americana (Mill.) Metz, and Senna reticulata (Willd.) H.S.Irwin et Barneby. Lastly, information on some other species or names used in the region is discussed: Acacia spadicigera Schltdl. et Cham., Albizia adinocephala (Donn.Sm.) Britton et Rose, Albizia rubiginosa Miq., Bauhinia glabra Jacq., Eriosema simplicifolium (Kunth) G.Don, Lonchocarpus cochleatus Pittier, and Zornia diphylla (L.) Pers.
Plantas medicinales de cuatro mercados del estado de Puebla, México
Authors: Martínez-Moreno David , Alvarado-Flores Roberto , Mendoza-Cruz Myrna , Basurto-Peña Francisco 
Published: January 2019

Se presenta el inventario de las plantas medicinales obtenido en cuatro mercados del estado de Puebla: Atlixco, Tepeaca, Tecamachalco y mercado Hidalgo de la ciudad de Puebla. Los mercados se visitaron una vez al mes durante medio año (enero a junio 2000). La información fue recabada mediante entrevistas abiertas con los comerciantes de cada mercado, preguntando por el nombre, el uso de las plantas, las partes utilizadas, las formas de preparación y la procedencia. Se hicieron colectas de los materiales para su determinación botánica; los ejemplares obtenidos se depositaron en el Herbario Nacional (MEXU). Se registraron 62 especies de plantas medicinales, pertenecientes a 31 familias; 50% de estas especies no habían sido reportadas en otros estudios sobre plantas medicinales realizadas en mercados en el estado de Puebla. Se discute el uso de las especies para diferentes enfermedades y por aparatos y sistemas orgánicos. La mayoría de las plantas estuvieron presentes durante todo el periodo de muestreo, pero algunas de ellas, como el alampepe, el berro y la gobernadora fueron encontradas en una sola ocasión.
Study on Identification of Lexical Meaning in E-C Translation of English for Electric Power
Authors: Jiang Xue 
Published: January 2019

As one of the branch of English for Science and Technology, English for Electric Power bears the characteristic of professionalism in meaning and flexible in lexis. As key components in professional literatures, lexis of English for Electric Power needs to be paid enough attention and accurately identified in order to precisely comprehend professional reading materials. This paper focuses on solving the problem of identifying Electric English vocabulary precisely by analyzing the determination of the professional lexis from three aspects of morphological structure, reference relations and context. Distinguishing the meaning of Electric Power English vocabulary is a crucial part in the translation practice of Electric Power English, which plays a vital role in ultimately understand and grasp the content of professional materials fully.
Effects of human activities on water quality assessment of Ala River in Akure, Ondo State, Nigeria
Authors: Fagbayide Samuel Dare , Abulude Francis Olawale 
Published: January 2019

The purpose of the study was to assess the water quality parameters of Ala River found in Akure, Ondo State, Southwest, Nigeria. The river is considered one of the most important irrigation and drinking water resources in Akure, Nigeria. Three locations were chosen spatially along the watercourse to reflect a consideration of all possible human activities that are capable of affecting the quality of the river water. The water samples were collected monthly for three consecutive months (February to April 2015) at the three sampling sites. The water samples collected were analyzed for physicochemical parameters which include pH, total dissolved solids, dissolved oxygen, biochemical oxygen demand, total hardness, phosphate, temperature, calcium, magnesium, chlorine, nitrate, iron and zinc using standard methods and their environmental effects on the river were investigated. There were variations in the quality of the sampled water when compared with the World Health Organization (WHO) standards for domestic and commercial water for the selected parameters. The traces of some hazardous physical and chemical impurities in the river were above the acceptable limits, and thereby pose a health risk to several rural communities who rely heavily on the river primarily as their source of domestic water. Therefore, the law should be enforced to discourage unnecessary waste dumping and discharging of another form of pollutants into surface water in Nigeria.
Theoretical study to calculate the vibration modes of a wind turbine blade with a new composite material
Authors: ElAlaoui Rabie , Mounirv Hamid , El Mostapha Boudi , El Marjani Abdellatif 
Published: January 2019

A precise understanding of the dynamics of a blade is essential for its design, especially in the development of new structures and the resolution of noise and vibration problems. This understanding involves the study of experimental and/or theoretical modal analysis. These latter present effective tools for describing, understanding and modelling the dynamic aspect of each structure, in the present work, we are going to establish the Eigen-mode of a wind turbine blade made by a new composite material â€˜hemp fibreâ€™ using theoretical calculation for flap-wise, edge-wise and torsional mode using the finite element method applied to a structure consisting of a beam embedded at one end, based on the Euler-Bernoulli hypothesis and the equation of beamâ€™s motion. Furthermore; we compare the obtained results with those of composite material made by fibreglass.

Keywords: Blade, Eigen-mode, hemp fibre, flap-wise, edge-wise, torsional, fibreglass.
Message from Editor
Authors: Soran Prof. Dr. Haluk 
Published: January 2019

Dear Readers,
It is the great honor for us to publish 8th volume, 1st issue of World Journal of Environmental Research. World Journal of Environmental Research welcomes original empirical investigations and comprehensive literature review articles focusing on environmental issues. World Journal of Environmental Research is an international peer-refereed journal which publishes global research articles about all aspects of environmental areas with the aim of sharing the findings of different environmental issues to provide contributions to the scientific studies.
The scope of World Journal of Environmental Research (WJER) includes major topics such as environmental agriculture, environmental biology, environmental biotechnology, environmental engineering, environmental health, environmental nanotechnology, environmental microbiology, environmental toxicology, environmental pollution and monitoring, environmental zoology, environmental ethics and biosciences, environmental informatics, environmental biochemistry, environmental genetics, environmental botany, environmental issues related to biosciences, environmental biophysics, environmental geology.
A total number of twelve (12) manuscripts were submitted for this issue and each paper has been subjected to double-blind peer review process by the reviewers specialized in the related field. At the end of the review process, a total number of five (5) high quality research papers were selected and accepted for publication.
Aim of this issue is to give the researchers an opportunity to share the results of their academic studies. There are different research topics discussed in the articles. The topics of the next issue will be different. You can make sure that we will be trying to serve you with our journal with a rich knowledge in which different kinds of topics are discussed in 2018 Volume.
We present many thanks to all the contributors who helped us to publish this issue.
Best regards,
Prof. Dr. Haluk Soran
Editor â€“ in Chief
Una nota su due urne e un’ara cineraria romana recentemente apparse sul mercato antiquario londinese.
Authors: Fadda Salvatore 
Published: January 2019

ItalianoNel corso di un’asta di antichità della casa Bonham’s tenutasi a Londra il 30 novembre del 2016 sono riapparsi alcuni cinerari romani: due urne e un altare dei quali si ignorava la collocazione da quando furono alienati dalla collezione di Lowther Castle nel 1947. Gli oggetti, tutti di provenienza urbana, hanno viaggiato per l’Europa attraversando diverse collezioni private rimanendo perciò lontani dal grande pubblico e dalle indagini storico-artistiche. La conseguente estrema penuria di letteratura su questi manufatti ha reso opportuna la realizzazione di questa nota, con la quale si vuole ricostruire la provenienza degli oggetti, individuarne il momento della produzione sulla scorta delle loro caratteristiche stilistiche e formali cogliendo l’occasione per affrontare alcune tematiche specifiche dell’iconografia funeraria romana. EnglishDuring an auction of antiquities held by Bonham's in London on November 30, 2016, some Roman cineraries reappeared: two urns and an altar, which were believed lost after they were alienated from the Lowther Castle collection in 1947. The objects, all of urban origin, traveled across Europe through various private collections, thus far away from the public and historical-artistic investigations. The extreme shortage of literature on these three artifacts leaded to the writing of this note which objective is to reconstruct the provenance of the cineraries, to identify the time of production by analyzing their stylistic and formal features while facing some specific themes of Roman funerary iconography. EspañolDurante una subasta de antigüedades celebrada por Bonham's en Londres el 30 de noviembre de 2016, reaparecieron algunos cinerarios romanos: dos urnas y un altar lo que se creían perdidos después de haber sido alienados de la colección de Lowther Castle en 1947. Los objetos, todos de origen urbana, viajaron a través de Europa pasando por varias colecciones privadas, lejos de el público y de la investigación histórico-artística. La extrema escasez de literatura sobre estos tres artefactos condujo a la redacción de esta nota cuyo objetivo es reconstruir la procedencia de los cinerarios, identificar el tiempo de producción analizando sus rasgos estilísticos y formales mientras se enfrenta a algunos temas específicos de la iconografía funeraria romana. Palabras Clave: Urnas cinerarias, escultura romana, arte funerario, coleccionismo de antigüedades.Keywords: Cinerary urns, Roman sculpture, funerary art, collection of antiquities.
O Povoamento Rural Islâmico no al-Andalus – Estado da investigação.
Authors: Caetano Leitão Marta Isabel 
Published: January 2019

ResumoO presente artigo mostra o estado actual da investigação sobre a organização do território, em Período Medieval Muçulmano, no espaço geográfico que abrange grande parte da Península Ibérica. Pretende-se, deste modo, dar a conhecer as várias abordagens existentes dentro daquela temática, onde se insere as fortificações, os assentamentos rurais e os meios de produção, e fazer uma breve reflecção acerca das várias questões que permanecem pendentes. AbstractThis article shows the current state of the research on the organization of the territory, in the Muslim Medieval Period, in the geographical space that covers much of the Iberian Peninsula. In this way, the aim is to present the various approaches that exist within this theme, including fortifications, rural settlements and the means of production, and to reflect briefly on the various issues that remain open.
Reseña de: RIBICHINI, S.; SICRE DÍAZ, J. L.; MARCO SIMÓN, F.; DOMÍNGUEZ MONEDERO, A. J.; ORIA SEGURA, M.; MARTÍNEZ ROJAS, F. J.; MONTERO HERRERO, S. C.: Profecía y adivinación en las religiones de la Antigüedad
Authors: Barroso Romero Rafael Antonio 
Published: January 2019

Reseña de la obra FERRER ALBELDA, E.; PEREIRA DELGADO, A. (eds.) (2017): Profecía y adivinación en las religiones de la Antigüedad, Sevilla, Universidad de Sevilla.
Socialization and Social Integration of Children with Disabilities: Theoretical Frameworks
Authors: Filipović Mirko , Matejić Đuričić Zorica 
Published: January 2019

In the context of modern social model of disability, this paper presents some of the leading theoretical frameworks that define the key problems of socialization and social integration of children with disabilities. Transformed into a social-scientific research, problems of physical, mental or social disability were given a new meaning: instead of individual "psychologically deviant acts," disability is interpreted as a consequence of the "continent of social relations." Second, and equally important, rather than the status (state) of disability, the focus turn on the very process of social relations that structure the phenomenon of deviance. Within the research of social processes that defined the context of individual development of children with disabilities, two problem circles were opened: firstly, general issues of socialization of these children, and secondly, issues related to the problems of their social integration in the formal education system. In the final section, key implications of different approaches have been derived: to provide conditions for active participation in social life for all members of the community date, regardless of the existence of physical or social barriers.
Imagining the Ister/Danube in Ancient Thought and Practice: River, the Scordisci, and Creation of Roman Imperialistic Space
Authors: D. Mihajlović Vladimir 
Published: January 2019

The paper considers cultural and imaginative construction of the Ister/Danube, and its implications in the creation of the limes area of the provinces of Moesia and (part of) Pannonia. It discusses how the Danube was used as an element in construing the Scordisci as a Roman enemy and (pseudo)ethnic tribe, what was the meaning of this connection, and did such conceptualization have real repercussions in the area of waterscape associated with the ‘tribe’. It is proposed that the Danube emerged as a hydrographical frontier thanks to its specific longue durée symbolic meaning of liminality embedded in the imperialistic agency in the course of creating provincial/frontier/imperial space. The basic point is that the ancient imagological tradition had an important effect on the construction of Roman imperial space thanks to the intellectual and political elites' capacities to shape powerscapes by projecting their own conceptualizations of the world into the webs of relations under their influence.
Relations of the Third Kind: Crisis, Critique and Politics
Authors: Blagojević Jelisaveta , Stošić Mirjana 
Published: January 2019

The paper discusses the concept of Maurice Blanchot of the relations of the third kind and its political implications. These relations are not characterized by some specific quality, but rather the absence of these qualities. In this manner, autrui evades all traditional dichotomies characteristic of the West European tradition of thought: being and nothingness, subject and object, me and others, presence and absence, etc. In the words of Roberto Esposito, Blanchot’s autrui is perhaps best defined as situated “on the intersection where one is constantly translated into the other: nothingness is translated into being, presence is void by absence, interior spills into exterior”.
Thinking and politics that are not the tools of power, authority and maintenance of status quo, now more than ever, seem to be in the hands of the relations of the “third kind”, places where they intersect, intertwine and negate the positions of subject and object, “dishonourable men”, Locke’s parrot, Derrida’s cat, Jean-Luc Nancy’s “hearts”, Herman Melville’s scribe Bartleby etc. Only from these locations it is possible to pose the necessary different questions – the questions whose answers are still unthinkable from today’s perspective.