Biologia Research Papers - Academia.edu (original) (raw)

Estre corto documento recoge algunas ideas muy interesantes de varios estudiosos como Antonio Cruz, John Lennox, William Lane Craig y otros. Para explicar el concepto de la palabra evolución , su significado en el contexto y como la... more

Estre corto documento recoge algunas ideas muy interesantes de varios estudiosos como Antonio Cruz, John Lennox, William Lane Craig y otros.
Para explicar el concepto de la palabra evolución , su significado en el contexto y como la evolución presenta conflictos con algunas leyes universales.

Invasions of Typha (cattail) and/or Phragmites (common reed) in wetland ecosystems result in changes in species richness, diversity and composition of vascular plants. These invasions are particularly harmful in lakes where threatened... more

Invasions of Typha (cattail) and/or Phragmites (common reed) in wetland ecosystems result in changes in species richness, diversity and composition of vascular plants. These invasions are particularly harmful in lakes where threatened species and/or communities are found. The spread of two species of Typha (T. angustifolia and T. latifolia) and of Phragmites australis in the Stagnone Lake, on Capraia Island

SCIENCE and EDUCATION a NEW DIMENSION NATURAL and TECHNICAL SCIENCE Issue 215

Recently, a novel approach to a highly sensitive and quantitative detection of rare earth element (REE) ions including La3+, Eu3+ and Tb3+, by the polymerase chain reaction (PCR) technique, has been reported. The detection of REE ions is... more

Recently, a novel approach to a highly sensitive and quantitative detection of rare earth element (REE) ions including La3+, Eu3+ and Tb3+, by the polymerase chain reaction (PCR) technique, has been reported. The detection of REE ions is based on the catalytic nature of REE ions targeting the deoxyribonucleic acid (DNA), thus monitoring of the ions can be achieved by reading the level of intact DNA by PCR. Despite of its high sensitivity (at ppb to ppt levels), the conventional PCR-based REE detection protocol requires certain length of time (1-2 hours). In the present study, we modified the PCR-based REE detection protocols by employing the high-speed PCR, and performed the automated and rapid detection of La3+ in small-sized aqueous samples within 5min.

Ecotourism is an important tool for biodiversity conservation in protected areas. However, high visitation rates and intensive public use can affect the wildlife. The present study aimed to evaluate vertebrate foraging in areas under... more

Ecotourism is an important tool for biodiversity conservation in protected areas. However, high visitation rates and intensive public use can affect the wildlife. The present study aimed to evaluate vertebrate foraging in areas under different levels of human influence in the Tijuca National Park, a protected area within the metropolitan area of Rio de Janeiro, Brazil. We used baits to attract vertebrates in areas with and without visitor facilities, at distances of 5, 35, and 100 meters from the road. We have analyzed the removal of bait by vertebrates in such treatments and identify higher consumption associated to greater human presence. The presence of visitors and visitor facilities (e.g., parking lots, barbecue pits, picnic tables, and playgrounds) significantly increases bait consumption. Park managers should consider the negative impacts of tourism on wildlife searching for ways to minimize them. RESUMO O ecoturismo é uma importante ferramenta para a conservação da biodivers...

Aborda questões de Biologia, Geologia e Ambiente .

A joint evaluation of all animals, uses all additive genetic relationships uses all data on all animal jointly It works as a linear model (correcting different effects for each other), jointly estimates animal effects and fixed effects... more

A joint evaluation of all animals, uses all additive genetic relationships uses all data on all animal jointly It works as a linear model (correcting different effects for each other), jointly estimates animal effects and fixed effects (herds) but has Selection Index properties (Regression with " heritability ")  1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1

Pupilla pratensis (Clessin, 1871) was recently confirmed as a distinct species based on morphological, ecological and molecular evidence. The main purpose of this study is to publish the first reliable data on the occurrence of P.... more

Pupilla pratensis (Clessin, 1871) was recently confirmed as a distinct species based on morphological, ecological and molecular evidence. The main purpose of this study is to publish the first reliable data on the occurrence of P. pratensis in the Czech Republic and Slovakia. The second goal is to analyse conchometry of P. pratensis, P. muscorum (L., 1758), and P. alpicola (Charpentier, 1837) to find out whether it is possible to reliably distinguish these species solely based on shell measurements. For multidimensional analysis of shell measurement variation we used principal components analysis (PCA). We documented six populations of P. pratensis in the Czech Republic and one in SW Slovakia. The revision of voucher material showed that all previously reported records of P. alpicola from the Czech Republic belonged in fact to P. pratensis. This requires the exclusion of P. alpicola from the list of Czech molluscs. Based on multidimensional analysis of shell measurements it was possible to distinguish P. pratensis from P. muscorum with no overlapping specimens. Pupilla alpicola was almost completely different from P. muscorum with only few overlapping specimens, contrary to P. pratensis which was mostly impossible to distinguish from P. alpicola based on analysed shell measurements. Shell width was the best single shell measurement for distinguishing P. pratensis and P. muscorum. Shell measurements of two Swedish populations of P. pratensis did not differ from shell variation of Czech and Slovak populations. However, Scandinavian populations displayed some differences from central European populations in apertural barriers which are discussed in detail. Czech and Slovak populations of P. pratensis occurred in calcium-rich fen meadows which perfectly matches with site characteristics reported from Scandinavia. We assume that the observed morphometric differences between P. pratensis and P. muscorum can be useful for distinguishing the species also outside the Czech territory and for palaeoecological studies where only empty shells are available. Since these species occupy ecologically different habitats their reliable identification in fossil material can improve the reconstructions of past environments.

Dalla fotosintesi artificiale una soluzione per il riscaldamento globale. “Ognuno potrà disporre sul proprio territorio dell’energia di cui ha bisogno. Chiaramente questo avrà un enorme impatto geopolitico”.

Exposure to particulate matter (PM) may alter lung homeostasis inducing changes in fluid balance and host defense. Bioavailability of soluble PM compounds like polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and... more

Exposure to particulate matter (PM) may alter lung homeostasis inducing changes in fluid balance and host defense. Bioavailability of soluble PM compounds like polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and transition metals has been shown to play a key role in lung injury. We have previously characterized the size, shape, and chemical components of urban air particles from Buenos Aires (UAP-BA) and their biological impact on lungs. Herein, we evaluate the possible toxic effect of UAP-BA-soluble fraction (UAP-BAsf) on pulmonary cells obtained from young (1-2 months old) and aged (9-12 months old) Wistar rats using phagocytosis, oxidant-antioxidant generation, and apoptosis as endpoints. UAP-BA were collected in downtown BA and residual oil fly ash (ROFA), employed as a positive control, was collected from Boston Edison Co., Mystic Power Plant, Mystic, CT, USA. Both particle-soluble fractions (sf) were employed at concentrations ranging from 0 to 100 m...

a nadie a tras" "El agua es el elemento y principio de todas las cosas" (Tales de Mileto) El agua es un elemento esencial del desarrollo sostenible. Los recursos hídricos propician el bienestar de la población y del medio ambiente. ¡LA... more

a nadie a tras" "El agua es el elemento y principio de todas las cosas" (Tales de Mileto) El agua es un elemento esencial del desarrollo sostenible. Los recursos hídricos propician el bienestar de la población y del medio ambiente. ¡LA HUMANIDAD NECESITA AGUA! Nuestro cuerpo necesita AGUA "NO DEJAR A NADIE ATRÁS …" Es el tema del Día Mundial del Agua 2019. Se trata de una adaptación de la promesa central de la Agenda 2030 para el Desarrollo Sostenible (D.S) TODO EL MUNDO DEBE BENEFICIARS E DEL PROGRESO DEL D.S ¿CUÁL ES EL PROBLEMA? Hoy en día millones de personas viven todavía sin agua potable en el hogar, la escuela, etc. Luchan por sobrevivir y prosperar. A menudo se ignora a los grupos marginados mujeres, niños, refugiados, pueblos indígenas, a quienes se los discrimina cuando intentan conseguir y gestionar el agua potable. Es el "servicio de abastecimiento de agua potable gestionado de manera segura", es decir, agua no contaminada a la que puede accederse en las viviendas. AGUA POTABLE ¿POR QUÉ SE DEJA A GENTE ATRÁS SIN AGUA POTABLE? Por múltiples razones en las que algunas personas resultan especialmente desfavorecidas por su condición: sexo, género; la raza, la etnia, la religión, el idioma, la nacionalidad; la situación económica y social. IMPORTANCIA DEL AGUA El agua es un derecho humano de toda persona, sea quien sea y esté donde esté. El agua es un punto decisivo para el fomento de salud pública y logro del desarrollo sostenible % DE AGUA POTABLE EN EL PERU

Distribution and plant mass of aquatic macrophytes, and their relation to environmental conditions was studied in the submontane-colline Slatina river in 2004. Diversity of macrophytes was low, only 8 vascular plants, 3 mosses and group... more

Distribution and plant mass of aquatic macrophytes, and their relation to environmental conditions was studied in the submontane-colline Slatina river in 2004. Diversity of macrophytes was low, only 8 vascular plants, 3 mosses and group Algae filamentosae were found. Myriophyllum spicatum is dominant species, Fontinalis antipyretica, Rhynchostegium riparioides and Algae filamentosae are frequent. Interactions between flow class, bed material, depth of water and the first three mentioned macrophytes, as well as Jungermannia leiantha were detected. Sparganium erectum prefers more antrophogenic conditions and Myriophyllum spicatum prefers the light. According to cluster analysis, three distinct and ecologically well separated parts of the river were identified. Based on Reference index, poor ecological status for the studied part of the Slatina river was estimated.

Background: Collagen, the most abundant protein in the human body, and as an extracellular matrix protein, has an important role in the fiber formation. This feature of the collagen renders establishment of the structural skeleton in... more

Background: Collagen, the most abundant protein in the human body, and as an extracellular matrix protein, has an important role in the fiber formation. This feature of the collagen renders establishment of the structural skeleton in tissues. Regarding specific features associated with the collagen, such as, formation of the porous structure, permeability and hydrophilicity, it can also be used as a biocompatible matrix in the enzyme engineering. Objectives: The aim of the present study was to investigate the application of the type I collagen as a matrix for alkaline phosphatase immobilization using cross-linking method. Material and Methods: The Alkaline phosphatase was covalently immobilized on collagen matrix by using 1-ethyl-3-(dimethylaminopropyl) carbodiimide hydrochloride (EDC). The source of the alkaline phosphatase was from the bovine intestinal mucous. After that, the activity of the immobilized enzyme was assayed under different experimental conditions. Results: The optimum pH was similar to that of the free enzyme, whereas the optimum temperature and thermal stability were shown some increments. The surface topography of the collagen matrix containing immobilized enzyme and ALP (Alkaline phosphatase) deficient was investigated by Atomic-force microscopy (AFM). Images that have been obtained applying AFM show significant differences between uncovered and immobilized enzyme-matrix surface topography. Conclusions: Our findings suggest that type I collagen can be utilized as a matrix for alkaline phosphatase immobilization via cross-linking method.

En el presente trabajo me voy a referir específicamente al Arte Contemporáneo y dentro de este el Bioarte. En primer lugar trataré de acercarnos a la idea de qué es el Bioarte, también llamado Arte transgénico o genético, ya que trata de... more

En el presente trabajo me voy a referir específicamente al Arte Contemporáneo y dentro de este el Bioarte. En primer lugar trataré de acercarnos a la idea de qué es el Bioarte, también llamado Arte transgénico o genético, ya que trata de una práctica del Arte del S.XX y XXI que surge con esas denominaciones a fines del siglo pasado. Muchas experiencias anteriores dan cuenta de la relación y el interés de los artistas por el trabajo con la ciencia sin denominarla Arte genético o transgénico, sino con otros nombres propios del momento: Arte de Sistemas, Conceptualismo entre otros. El bioarte actual es heredero de esas prácticas artísticas y dado el acentuado interés de esta relación entre el arte y la ciencia, se trata actualmente de identificarla, historizarla, y definirla.
Por ese motivo, las preguntas: ¿Hay una relación conjunta posible entre la biología y el bioarte en la actualidad? ¿Puede el arte llamado “Bioarte” hacer una contribución a las investigaciones de las Ciencias Biológicas Contemporáneas?
Para contestarlas, me acercaré en primer lugar a una definición del bioarte que justificará una relación histórica y social de ambas disciplinas, para centrarme luego en la influencia de la tecnología que ellas comparten, en la que se formulan preguntas específicas a cada campo. Esto me permitirá suponer que si se superan ciertos problemas epistemológicos en relación a lo transdisciplinar, Arte y Biología podrían establecer una relación colaborativa.
Bs.As. junio de 2017

Nuestra gran curiosidad es el motor que nos impulsa a dar respuesta a grandes preguntas, una de las más difíciles de responder por mucho tiempo fue el origen de la vida y del ser humano. Esto se debe a dos fenómenos transcendentales en la... more

Nuestra gran curiosidad es el motor que nos impulsa a dar respuesta a grandes preguntas, una de las más difíciles de responder por mucho tiempo fue el origen de la vida y del ser humano.
Esto se debe a dos fenómenos transcendentales en la historia de la tierra: la abiogénesis para el origen de la vida y la evolución para origen a las especies. En este texto busco explicar de la forma más sencilla las dos teorías científicas que explican cómo se dieron estos dos fenómenos.

Extreme rituals entail excessive costs without apparent benefits, which raises an evolutionary cost problem (Irons, 2001). It is argued that such intense rituals enhance social cohesion and promote cooperative behaviors (Atran & Henrich,... more

Extreme rituals entail excessive costs without apparent benefits, which raises an evolutionary cost problem (Irons, 2001). It is argued that such intense rituals enhance social cohesion and promote cooperative behaviors (Atran & Henrich, 2010; Durkheim, 1912). However, direct evidence for the relation between ritual intensity and prosociality is lacking. Using economic measures of generosity and contextually relevant indicators of group identity in a real-world setting, we evaluated pro- social effects from naturally occurring rituals that varied in severity.

Revista sobre entomología y aracnología ibérica, de descarga libre y gratuita a través de nuestra web www.mundoartropodo.com. Esta publicación es la primera revista de divulgación sobre esta temática en español, dirigida a aficionados,... more

Revista sobre entomología y aracnología ibérica, de descarga libre y gratuita a través de nuestra web www.mundoartropodo.com. Esta publicación es la primera revista de divulgación sobre esta temática en español, dirigida a aficionados, entusiastas y, en general, a todo aquel interesado por esta rama de la zoología.

A variety of chemicals including foaming agents are used to aid in the protection of forest resources from the wild land fires. The fire-fighting foams (FFFs) are formulations composed principally of surfactants. As a part of Japanese... more

A variety of chemicals including foaming agents are used to aid in the protection of forest resources from the wild land fires. The fire-fighting foams (FFFs) are formulations composed principally of surfactants. As a part of Japanese national project, environmentally inert FFFs have been developed. There is an emerging need for testing the impacts of these FFFs on the living organisms composing the typical landscapes or ecosystems in Japan. In the present report, we aimed to describe our latest attempt for assessing both the short-tem and long-term impacts of FFFs in aquatic (fresh water) and semi-aquatic (wetland) ecosystems , by employing the laboratory-sized model assays (preliminary studies) and the biotope-based observation, respectively. In the biotope assays which was based on the observation in compact biotopes mimicking the fresh water environments and wetland, both the acute and long-term eco-toxic impacts of two FFFs (soap-based and synthetic detergent-based) were assessed. Spraying of synthetic detergent-based foam formula was shown to be more toxic compared to soap-based formula and mock water treatment.

Com o objetivo de proporcionar dados básicos sobre embriologia e sua relevância clínica, Langman | Embriologia Médica conserva sua abordagem singular com texto enxuto e excelentes diagramas e imagens clínicas. Além disso, a obra enfatiza... more

Com o objetivo de proporcionar dados básicos sobre embriologia e sua relevância clínica, Langman | Embriologia Médica conserva sua abordagem singular com texto enxuto e excelentes diagramas e imagens clínicas. Além disso, a obra enfatiza a importância clínica dos assuntos abordados e apresenta diversos exemplos clínicos decorrentes de eventos embriológicos anormais. Os seguintes aspectos pedagógicos e atualizações nesta 13ª edição auxiliam o aprendizado:- Organização do material: o conteúdo desta obra é organizado em duas partes. Na primeira, é apresentada uma visão geral do desenvolvimento inicial, desde a gametogênese até o período embrionário. A segunda parte do livro apresenta descrições dos processos fundamentais de embriogênese de cada sistema de órgãos;- Correlações clínicas: além da descrição dos eventos normais, cada capítulo contém boxes com correlações clínicas, que têm como objetivo realçar a relevância clínica da embriologia e a importância de se conhecer eventos cruciais do desenvolvimento. Essa é a primeira etapa no processo de melhora dos desfechos fetais e na promoção de recém-nascidos mais sadios. Quadros clínicos e descrição de casos são utilizados para fornecer essas informações, que foram expandidas e atualizadas nesta edição;- Genética: tendo em vista a importância cada vez maior da genética e da biologia molecular para a embriologia e o estudo de defeitos congênitos, são apresentados e comentados princípios básicos de genética e de biologia molecular. O primeiro capítulo fornece uma introdução aos processos moleculares, define termos comumente usados na genética e na biologia molecular e descreve os caminhos principais usados no desenvolvimento embrionário. Desse modo, ao longo do texto, os genes e as vias de sinalização importantes que regulam o desenvolvimento embriológico são identificados e discutidos.

Refúgios úmidos, matas serranas, brejos interioranos, serras úmidas, são alguns dos sinônimos utilizados para designar as formações vegetacionais conhecidas como brejos de altitude. Estes constituem encraves de vegetação úmida no... more

Refúgios úmidos, matas serranas, brejos interioranos, serras úmidas, são alguns dos sinônimos utilizados para designar as formações vegetacionais conhecidas como brejos de altitude. Estes constituem encraves de vegetação úmida no semiárido nordestino. O objetivo deste trabalho foi investigar, por meio do georreferenciamento, tratamento de dados vetoriais e visitas a campo, a ocorrência de brejos de altitude em Alagoas, visando acrescentar informações acerca deste tipo de ambiente e levantar questionamentos sobre a influência antrópica a que estão sujeitos. Brejos de altitude em território alagoano são representados sob a forma de pequenos fragmentos, muitas vezes inseridos no perímetro urbano das cidades onde estão situados. Localizados, predominantemente, ao norte do estado, onde recebem influência, em sua altitude média, do Planalto da Borborema, resultante da sua divisa com Pernambuco. A deterioração destes ambientes é notada, relacionando-se intimamente com atividades de subsistência da população, como a extração de madeira e a criação de animais.

Un pianista afroamericano diventa “amico” di 200 membri del Ku Klux Klan e li convince ad abbandonare l’organizzazione razzista. Una ragazza apre una biblioteca in un bar di Tripoli per salvare i libri dai roghi degli estremisti islamici.... more

Un pianista afroamericano diventa “amico” di 200 membri del Ku Klux Klan e li convince ad abbandonare l’organizzazione razzista. Una ragazza apre una biblioteca in un bar di Tripoli per salvare i libri dai roghi degli estremisti islamici. Un medico, padre di Piero e nonno di Alberto Angela, falsifica identità e cartelle cliniche di molti cittadini ebrei per salvarli da una legge ingiusta. Vi sembra incredibile? Eppure sono tutte storie realmente accadute e tante altre ne troverete in questo libro, ambientate in diverse epoche storiche e Paesi del mondo. Storie che nascono da scelte coraggiose di ragazzi e ragazze, uomini e donne che hanno deciso di costruire un futuro migliore, anche quando sembrava impossibile, con il dialogo, la non-violenza, la cooperazione. Ma non solo. Scoprirete in che modo la scienza indaga il comportamento umano e animale, tra guerre di scimpanzé, esperimenti e fatti bizzarri. Da Malala a Daryl Davis, da Abu Malek a Carlo Angela, 12 storie vere e 10 parole-chiave per riflettere sulle azioni e sulle scelte “etiche” che tutti noi possiamo compiere per vivere meglio con noi stessi e con gli altri.

Experimento de Embriología sobre el sistema de replicación de cultivo de huevos embrionados de ave (sin cáscara) en una capa de plástico de la Facultad de Ciencias Naturales y Matemática de la Universidad Nacional Federico Villarreal

Informe de Anatomía Comparada sobre los sistemas urinario y reproductor de los vertebrados

EFECTOS DE LOS ALIMENTOS TRANSGÉNICOS EN COLOMBIA

The paper deals with the influence of tree species on millipede communities (Diplopoda). The research was carried out in nine sites in the Borová hora arboretum (Zvolen town, Central Slovakia). Each studied site represents a monoculture... more

The paper deals with the influence of tree species on millipede communities (Diplopoda). The research was carried out in nine sites in the Borová hora arboretum (Zvolen town, Central Slovakia). Each studied site represents a monoculture of one of nine tree species: Betula pubescens Ehrh., Pinus sylvestris L., Larix decidua Mill., Carpinus betulus L., Abies alba Mill., Picea abies (L.) Karst., Alnus incana (L.) Moench, Populus nigra L., Ulmus laevis Pall. Millipedes were collected by pitfall trapping during vegetation periods in 2008-2011. In total, 1064 individuals of 17 species and 7 families were obtained. The results of research confirmed (i) an influence of tree species on the composition of millipede communities, (ii) a significant influence of soil nitrogen on the species richness and biodiversity, and (iii) an impact of soil pH on the species composition of these terrestrial invertebrate communities. In terms of total dynamic activity and species richness of millipedes, the m...

Un breve compendio de los tipos de coloración en aves y su alcance como aproximación al color real de algunos dinosaurios.