149 research outputs found
Selecting films for sex research: Gender differences in erotic film preference
No full textThe official published version can be obtained from the link below.The aim of this study was to explore gender differences in sexual responsiveness to erotic films that had been selected for their differential appeal for men and women. A secondary objective was to identify variables that influence sexual arousal and explore whether these variables differ for men and women. Fifteen men (M age = 26 yrs) and 17 women (M age = 24 yrs) were presented with 20 film clips depicting heterosexual interactions, half of which were female- and the other half male-selected, and were asked to rate the clips on a number of dimensions. Overall, men found the film clips more sexually arousing than did the women. Gender differences in arousal were negligible for female-selected clips but substantial for male-selected clips. Furthermore, men and women experienced higher levels of sexual arousal to clips selected for individuals of their own gender. Cluster regression analyses, explaining 77% of the variance for male and 65% for female participants, revealed that men's sexual arousal was dependent upon the attractiveness of the female actor, feeling interested, and both imagining oneself as a participant and watching as an observer. For women, with all variables entered, only imagining oneself as a participant contributed to sexual arousal ratings. The findings suggest that how films are selected in sex research is an important variable in predicting levels of sexual arousal reported by men and women
The inadequacy of morphology for species and genus delineation in microbial eukaryotes: An example from the parabasalian termite symbiont <i>coronympha</i>
No full textBackground
For the majority of microbial eukaryotes (protists, algae), there is no clearly superior species concept that is consistently applied. In the absence of a practical biological species concept, most species and genus level delineations have historically been based on morphology, which may lead to an underestimate of the diversity of microbial eukaryotes. Indeed, a growing body of molecular evidence, such as barcoding surveys, is beginning to support the conclusion that significant cryptic species diversity exists. This underestimate of diversity appears to be due to a combination of using morphology as the sole basis for assessing diversity and our inability to culture the vast majority of microbial life. Here we have used molecular markers to assess the species delineations in two related but morphologically distinct genera of uncultivated symbionts found in the hindgut of termites.
Methodology/Principal Findings
Using single-cell isolation and environmental PCR, we have used a barcoding approach to characterize the diversity of Coronympha and Metacoronympha symbionts in four species of Incisitermes termites, which were also examined using scanning electron microscopy and light microcopy. Despite the fact that these genera are significantly different in morphological complexity and structural organisation, we find they are two life history stages of the same species. At the same time, we show that the symbionts from different termite hosts show an equal or greater level of sequence diversity than do the hosts, despite the fact that the symbionts are all classified as one species.
Conclusion/Significance
The morphological information used to describe the diversity of these microbial symbionts is misleading at both the genus and species levels, and led to an underestimate of species level diversity as well as an overestimate of genus level diversity. The genus ‘Metacoronympha’ is invalid and appears to be a life history stage of Coronympha, while the single recognized species of Coronympha octonaria, inhabiting these four termites is better described as four distinct species.Peer reviewedPublished: August 11, 2009.CloningTermitesFlagellaInvasive speciesPhylogenetic analysisProtistsRibosomal RNASpecies delimitatio
New species of Spirotrichonympha from reticulitermes and the relationships among genera in Spirotrichonymphea (Parabasalia)
No full textSpirotrichonymphea is a class of hypermastigote parabasalids defined by their spiral rows of many flagella. They are obligate hindgut symbionts of lower termites. Despite more than 100 yr of morphological and ultrastructural study, the group remains poorly characterised by molecular data and the phylogenetic positions and taxonomic validity of most genera remain in question. The genus Spirotrichonympha has been reported to inhabit several termite genera, including Reticulitermes, Coptotermes, and Hodotermopsis. The type species for this genus, Spirotrichonympha flagellata, was described from Reticulitermes lucifugus but no molecular data are yet available for this species. In this study, three new Spirotrichonympha species are described from three species of Reticulitermes. Their molecular phylogenetic position indicates that the genus is not monophyletic, as Spirotrichonympha species from Coptotermes, Paraneotermes, and Hodotermopsis branch separately. In contrast, the genus Holomastigotoides is monophyletic, as demonstrated using new sequences from Holomastigotoides species. The presence of Holomastigotoides in Prorhinotermes and the distinct phylogenetic positions of Spirotrichonympha from Reticulitermes and Coptotermes are consistent with a previously proposed symbiont fauna replacement in the ancestor of Reticulitermes. [ABSTRACT FROM AUTHOR]Peer reviewedfinal article publishedCoptotermeslower termitegut symbiontRhinotermitidaeProrhinotermesParaneotermesHeteroterme
Marketing esportivo e suas características: estudo de caso na CIMED
No full textTCC (graduação) - Universidade Federal de Santa Catarina, Centro Sócio Econômico, Curso de Administração.O administrador esportivo e a gestão do esporte precisam ser muito estudados ainda em nosso pais. 0 estudo aqui realizado tem o intuito de apresentar o marketing esportivo, conceituando e descrevendo seus benefícios. Tem como objetivo verificar as vantagens que o esporte traz para uma empresa patrocinadora do esporte. Identifica as características do marketing esportivo em nosso pais, relata o funcionamento do marketing esportivo na organização, descreve a importância que o marketing esportivo exerce e ainda analisa a realidade da Cimed. A empresa é apresentada, assim como suas ações no time de vôlei e o investimento no esporte. Esse trabalho relata a importância que a equipe de vôlei da Cimed tenta para a organização e para o seu desenvolvimento. Apresenta uma pesquisa já realizada sobre o público-alvo do vôlei em nosso pais, mostrando ser bem diversificado, o que é válido para a organização investidora nesse esporte. Além disso, o estudo demonstra a ligação da teoria com a prática percebida. E finalmente, são expostas as considerações sobre o estudo, mostrando as vantagens que o patrocínio ao esporte exerce e o resultado no contexto geral do mercado
Molecular and morphological analysis of the family Calonymphidae with a description of Calonympha chia sp. nov., Snyderella kirbyi sp. nov., Snyderella swezyae sp. nov. and Snyderella yamini sp. nov.
No full textCalonymphids are a group of multinucleate, multiflagellate protists belonging to the order Cristamonadida (Parabasalia) that are found exclusively in the hindgut of termites from the family Kalotermitidae. Despite their impressive morphological complexity and diversity, few species have been formally described and fewer still have been characterized at the molecular level. In this study, four novel species of calonymphids were isolated and characterized: Calonympha chia and Snyderella yamini spp. nov., from Neotermes castaneus and Calcaritermes nearcticus from Florida, USA, and Snyderella kirbyi and Snyderella swezyae, spp. nov., from Calcaritermes nigriceps and Cryptotermes cylindroceps from Colombia. Each of these species was distinguished from its congeners by residing in a distinct host and by differences at the molecular level. Phylogenetic analyses of small subunit (SSU) rDNA indicated that the genera Calonympha and Stephanonympha were probably not monophyletic, though the genus Snyderella, previously only represented by one sequence in molecular analyses, appeared with these new data to be monophyletic. This was in keeping with the traditional evolutionary view of the group in which the morphology of the genus Snyderella is considered to be derived, while that of the genus Stephanonympha is ancestral and therefore probably plesiomorphic.Peer reviewedfinal article publishe
Incorporating interactive demonstration applets into the mathematics classroom
No full textPlan B Paper. 2012. Master of Science in Education-Secondary Mathematics--University of Wisconsin-River Falls. Mathematics Department. ii + 108 leaves. Includes bibliographical references (leaves 94-98).Recognizing that the incorporation of technology into the modern mathematics classroom often falls far behind the ideal, the author outlines the history and reasons for the delay and lists some of the difficulties and concerns with the full implementation of technology in the classroom. She then conducts an exploration of the types of technology that are available for use in the classroom. This is followed up with a brief investigation of web-based technology types and a description of their strengths and weaknesses. The author then highlights research supporting the use of these technologies and the benefits for learning that they can provide. After identifying a digital library of dynamic visualization applets designed by teachers for use in the classroom, the Wolfram Demonstrations Project (Wolfram, 2012a), the author conducts an in-depth search of the website. The author uses this online digital library to construct a catalog of applets suitable for use in basic developmental college mathematics courses, as well as for intermediate and college algebra. The author gives descriptions of these applets, lists the courses that they might be suitable for, and rates the applets as to appropriateness, accuracy, interactivity, clarity, and ability to enhance understanding. She includes these findings along with a discussion as to the strengths and weaknesses of the different types of applications. Along with suggestions for uses of the applications in the classroom, the author also offers several lesson plans that incorporate inquiry-based and constructivist methods in order to utilize the applets in a classroom situation in a format recommended to optimize learning benefits for the students
. 1098 Año 22 (2023) octubre. El Tlacuache
No full textChautla es el nombre de un valle entre las lomas y cerros de la Sierra Montenegro, no cuenta con un río, pero la existencia de barrancas someras entre las laderas nos lleva a pensar la existencia de manantiales que les proporcionarían agua a sus habitantes.- Ritual de fundación para la ciudad epiclásica de Chautla por Giselle Canto Aguilar y Lucía Ivonne López MejíaBaudez, Claude-Francois, 2004, Una historia de la religión
de los antiguos mayas, IIA-UNAM, Centro Frances de
Estudios Mexicanos y Centroamericanos, Centre Culture et
de Cooperation pour L’Amérique Centrale, México.
Duday, H., 1997, “Antropología biológica ‘de campo’,
tafonomía y arqueología de la muerte”, en: Malvido, E.,
Pereira, G., and Tiesler, V. (eds.), El cuerpo humano y su
tratamiento mortuorio. Centro de estudios mexicanos y
centroamericanos, México. Pp. 91-126.
Hooton, E., 1947, Up From the Ape, McMillan, USA.
López Austin, Alfredo, 2001, “La religión, la magia y la
cosmovisión”, en: Linda Manzanilla y Leonardo López Luján
(coords.), Historia Antigua de México. Volumen IV: Aspectos
fundamentales de la tradición cultural mesoamericana,
CONACULTA-INAH, IIA-UNAM, Miguel Ángel Porrúa
Editor, México. Pp. 227-272.
López Luján, Leonardo, 1993, Las ofrendas del Templo
Mayor de Tenochititlan, INAH, México.
Manzanilla, Linda, 1993, “Arquitectura y áreas de actividad:
banco de datos”, en: Linda Manzanilla (coord.), Anatomía de
un conjunto residencial teotihuacano en Oztoyahualco, IIAUNAM,
México. Vol. 1:98-189.
Merry de Morales, Marcia, 1987, “Appendix C. The
Chalcatzingo Burials”, en: David C. Grove (ed.), Ancient
Chalcatzingo, University of Texas Press, Austin, pp. 457-480.
Spence, Michael W. y Luis Manuel Gamboa
Cabezas, 1999, “Mortuary practices and social
adaptation in the Tlailotlacan enclave”, en:
Linda Manzanilla y Carlos Serrano (eds.),
Prácticas funerarias en la Ciudad de los
Dioses. Los enterramientos humanos de la
antigua Teotihuacan, IIA-UNAM-DGAPA,
México. Pp. 173-201.Reconstrucción de los Individuos 1 y 2 en la Caja de ofrenda. Ilustración: María de las Mercedes García Besné Calderón.Cista en la Estructura 30 de Chautla
El empleo del horario discipular y la práctica de la autonomía por los estudiantes del L. I. I. P. “El Amauta”, Paragsha – 2024
No full textPonemos en la mesa del saber la vigente tesis que aborda temática relevante
como es: El empleo del horario discipular y la práctica de la autonomía por los
estudiantes del L. I. I. P. “El Amauta”, Paragsha – 2024, desarrollado en forma básica y
correlacional; considerando a 25 estudiantes, a quienes se les administraron fichas de
observación, orientado por una ruta hipotética deductiva, descriptiva y estadística.
Que habiendo efectuado un circuito de camino sistemático pertinente y
oportuno, además, luego de un abordaje en particular de cada variable, hemos instituido
vínculos oportunos entre ellas, arribando a los hallazgos siguientes: Se manifiestan en
correlación significativas con valores de Rho, tanto la h. g. en 0.246, la h. e. 1 en 0.402
y la h. e. 2 en 0.314, siendo ≥ 0.144, las mismas que posibilitan rechazar la H0, por
ende, aceptar la H1 en todos los casos.
Dichos hallazgos confirman la relevancia elemental de la tesis y sirven de
provocación robusta a fin de desarrollar exploraciones aplicadas en el futuro y
transpolarla a otros sujetos y comunidades proclives al cambio, concibiendo el paso
mayúsculo que establece un “horario discipular” respecto a cualquier otra forma de
organización.Tesi
Efficacy and safety of direct oral anticoagulants in patients with cancer and venous thromboembolism: Systematic review of the literature
No full textIntroducción: El tromboembolismo venoso es frecuente en pacientes oncológicos y es reconocido como la segunda causa de mortalidad en esta población. Objetivo: revisar sistemáticamente y evaluar ensayos clínicos sobre el uso de anticoagulantes orales directos en pacientes con cáncer no hematológico. Fuentes de datos y selección de estudios: las bases de datos Medline, SCOPUS, EMBASE, CENTRAL (Cochrane Central Register of Controlled Trials) y LILACS fueron consultadas desde marzo de 2018 buscando ensayos clínicos que evalúan el efecto de anticoagulantes orales directos en pacientes con cáncer contra el estándar de manejo. Extracción de datos y síntesis: dos revisores realizaron la búsqueda y la extracción de datos de manera independiente y concurrente. Se utilizó la herramienta propuesta por la Colaboración Cochrane para la evaluación del riesgo de sesgo. Resultados: los anticoagulantes orales directos son medicamentos eficaces y seguros en pacientes con neoplasias sólidas. Debe tenerse precaución al prescribir este tipo de fármacos en pacientes con neoplasias gastrointestinales dado el mayor riesgo de sangrado. Aún se necesitan más datos de ensayos clínicos aleatorizados específicamente en población con cáncer para considerar el uso de estos medicamentos como un estándar de manejo.
Conclusiones: los anticoagulantes orales directos en pacientes con cáncer han demostrado disminuir la recurrencia de tromboembolismo venoso, asociado también a mayor tasa de sangrados. El uso de estos medicamentos debe definirse de forma individualizada, evitándolo en pacientes con tumores gastrointestinales.Introduction: Venous thromboembolism is common in patients with cancer and is recognized as the second cause of mortality in this population. Objective: to systematically review and evaluate clinical trials about the use of direct oral anticoagulants in patients with non-hematological cancer. Data sources and study selection: Medline, SCOPUS, EMBASE, CENTRAL (Cochrane Central Register of Controlled Trials) and LILACS databases were consulted since March 2018 looking for clinical trials evaluating the effect of direct oral anticoagulants in cancer patients compared to the standard of care. Data extraction and synthesis: two reviewers conducted the search and data extraction independently and concurrently. The tool proposed by the Cochrane Collaboration was used to assess the risk of bias. Results: direct oral anticoagulants are effective and safe medications in patients with solid malignancies. Caution should be taken when prescribing this type of drugs in patients with gastrointestinal malignancies given the increased risk of bleeding. More data from randomized clinical trials specifically in the population with cancer are still needed to consider the use of these medications as a standard of care.
Conclusions: Direct oral anticoagulants in cancer patients have demonstrated to decrease venous thromboembolism recurrence and are associated with a higher bleeding rate. The use of these medications should be defined individually, avoiding it in patients with gastrointestinal tumors.RESUMEN
ABSTRACT
1. INTRODUCCIÓN
2. MARCO TEÓRICO
3. PROBLEMA
4. JUSTIFICACIÓN
5. OBJETIVOS
6. PROPÓSITOS
7. ASPECTOS METODOLÓGICOS
TIPO DE ESTUDIO
POBLACIÓN DE REFERENCIA Y MUESTRA
TÉCNICAS DE RECOLECCIÓN DE LA INFORMACIÓN
10. ASPECTOS ÉTICOS
11. CRONOGRAMA
12. PRESUPUESTO
13. RESULTADOS
14. DISCUSIÓN
15. CONCLUSIONES
16. REFERENCIASEspecializació
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