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Objective: To determine the structural and phenological characteristics of four major tree species in the tropical deciduous forests. Design/Methodology/Approach: To determine their structure, ≥10 cm wide trees were registered at a height of 1.30 m in 30 sites of 500 m². For phenological purposes, seven sites were selected. The following phenological stages were evaluated: dormancy, vegetative, flowering, fruiting, and seeding. Results: Four hundred and five individuals belonging to the four species under study were found: copal ancho (Bursera copallifera (Sessé & Moc.) ex DC. Bullock), Mexican kidneywood (Eysenhardtia polystachya (Ortega) Sarg.), tecolhuixtle (Mimosa benthamii (J.F. Macbr. var. bentha-mii)), and tepemezquite (Lysiloma divaricatum (Jacq.) Macbride). Tepemezquite ranked first according to the Relative Importance Value Index. Based on the phenological characteristics observed, three species lost foliage at some time of the year and only tecolhuixtle was evergreen. Study Limitations/Implications: The results and conclusions are limited only to individuals with ≥10 cm in diameter. Further results can be extrapolated from this data. Findings/Conclusions: The structural and phenological features of the four species evaluated in ejido El Limón have similar characteristics to those that have been described for this type of vegetation in other locations in Mexico. [ABSTRACT FROM AUTHOR]

Copyright of Bosque (03048799) is the property of Facultad de Ciencias Forestales, Universidad Austral de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Chapingo Serie Ciencias Forestales is the property of Universidad Autonoma Chapingo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Edad de Oro is the property of Departamento de Filologia Espanola de la Universidad Autonoma de Madrid and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Versants: Revista Suiza de Literaturas Románicas is the property of University Library of Bern and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agrociencia is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agrociencia is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hipogrifo: revista de literatura y cultura del siglo de oro is the property of Hipogrifo: revista de literatura y cultura del siglo de oro and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Chapingo Serie Ciencias Forestales is the property of Universidad Autonoma Chapingo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agrociencia is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The magnetorheological dampers have been extensively studied given their benefits such as fail-safe manner, low power requirements, relative fast response, and large force capacity and robustness. To take advantage of this remarkable device, a good model is required to accurately and effectively predict the real-time damping force in magnetorheological damper in order to apply the appropriate control actions to improve the response of the structural system. In this article, a new practical model is proposed to better characterize the hysteresis phenomenon in magnetorheological dampers. The model considers the displacement, velocity, and acceleration excitations as well as the current excitation as input variables and includes a reduced number of constant parameters to be determined. Since the displacement, velocity, and acceleration variables can be obtained in real time from adequate sensors, it is easy and practical to predict the current excitation required to generate the specific hysteresis force. The hysteresis damping forces predicted by the proposed model are validated with those experimentally obtained for different current, amplitude, and frequency of excitation, and a very good correlation has been observed. [ABSTRACT FROM PUBLISHER]

Copyright of Anuario Calderoniano is the property of Anuario Calderoniano and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective. Alexithymia is a personality trait characterized by difficulty to perceive and express emotions. Previous studies have indicated a high prevalence of alexithymia in patients with inflammatory bowel disease (IBD) but results have been inconsistent. The aim of the present study was to investigate the prevalence of alexithymia in a large IBD cohort and to establish the impact of alexithymia on health-related quality of life (HRQOL) in these patients. Material and methods. A cross-sectional prospective study was undertaken including 534 consecutive IBD patients. Independent variables were measured using one socio-demographic and clinical questionnaire, the hospital anxiety and depression scale (HADS) and the Toronto alexithymia scale (TAS-26). Dependent variables were measured using the short form 36 health survey (SF-36) and the inflammatory bowel disease questionnaire (IBDQ-36). Multiple linear regression and logistic regression were performed to identify factors associated with HRQOL. Results. Participation rate was 91.3%. The overall prevalence of alexithymia was 30.2% (95% CI: 26.0-35.0), with no difference between Crohn's disease and ulcerative colitis. The most affected scales in quality of life were general health (mean == 48.35, 95% CI: 46.43-50.27), vitality (mean == 55.81, 95% CI: 53.59-58.04) and systemic symptoms (mean == 5.19, 95% CI: 5.08-5.29). Alexithymia was significantly associated with an impaired quality of life (OR == 3.34, 95% CI: 1.98-5.65). 'Difficulty identifying feelings' and 'externally oriented thinking' were the alexithymia factors related to the impaired HRQOL. Conclusions. Alexithymia is highly prevalent in IBD and represents a significant determinant of HRQOL. Alexithymia and its components need to be taken into consideration in the management of IBD patients. [ABSTRACT FROM AUTHOR]

Copyright of Revista Chapingo Serie Ciencias Forestales is the property of Universidad Autonoma Chapingo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Recently, different authors agree that the way to optimize the flow in polymer melt is by changing the viscosity. There are several chemical products that help the above-mentioned, but these products change the molecular properties of the polymer. Recent nonchemical approaches use vibration techniques in the manufacturing process. The problems of the aforementioned approaches reside in the necessity of major modifications to the injection machine or the development of a new machine. The novelty of this research is to provide a mechanical apparatus to modify the viscosity of melted polymers by inducing vibrations without sacrificing the polymer properties in the injected parts, and which do not imply major modifications to the machine or molds. The developed apparatus is a simple mold accessory that makes easy for the end user the retrofitting of existing injection machines and it reduces the manufacturing costs. The improvement on the injection efficiency is tested with high-density polyethylene, reaching an improvement of 30% when excited at frequencies around 3 Hz. [ABSTRACT FROM AUTHOR]

Copyright of Anuario Calderoniano is the property of Anuario Calderoniano and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)