Search results for "lcsh:B"
showing 10 items of 2768 documents
Sobre la naturalización de la lógica*
2003
El presente artículo se ocupa de dar razones en contra de la naturalización de la lógica, en tanto en cuanto esto signifique una revisión de esta ciencia. El trabajo critica cada uno de los intentos históricos importantes que ha habido de revisión de las leyes lógicas -- intuicionismo, lógica cuántica, lógicas alternativas - y también intenta argumentar que el problema de la interpretación de la mecánica cuántica no tiene nada que ver con la naturalización de la lógica. This article is devoted to give reasons against the naturalization of logic, in a sense which entails a revision of this science. The paper criticizes each historical important attempt to revise logical laws - intuitionism, …
Perspectivas actuales de la filosofía y la pedagogía del deporte
2016
La filosofía del deporte, al igual que la pedagogía, la historia y otros estudios humanísticos alrededor del fenómeno deportivo, ha permanecido tradicionalmente en un segundo plano en facultades e instituciones educativas, incluso en aquellas cuyo fin es, precisamente, comprender adecuadamente cómo y por qué jugamos del modo que lo hacemos y con qué finalidades (Kretchmar, 2005). En una reciente editorial de la revista Sport, Ethics and Philosophy, Michael McNamee (2015) hace un repaso de la actualidad, exponiendo cómo a pesar de que la disciplina no para de crecer y ganar protagonismo, sobre todo en el ámbito editorial, no acaba de hacerse el hueco pertinente en la academia. Por otro lado,…
Initial validation of the Psychobiosocial States in Physical Education (PBS-SPE) scale
2018
The purpose of this cross-sectional investigation was to examine the item characteristics, factor structure, reliability, convergent validity, and nomological validity of the Psychobiosocial States in Physical Education (PBS-SPE) scale. In Study 1, a sample of 1,030 students (582 girls and 448 boys, 10 to 19-year-olds), drawn from middle or high schools, rated the intensity of the 20 items version of the PBS-SPE scale thinking about the feelings they had usually experienced in physical education classes. In Study 2, an additional sample of 1,025 students (578 girls, 447 boys, 10 to 19-year-olds), rated the 16 items of the final version of the scale. Two subsamples also completed an affectiv…
Naphthalenone polyketides produced by Neofusicoccum parvum, a fungus associated with grapevine Botryosphaeria dieback
2016
A strain of Neofusicoccum parvum isolated from declining vines was pathogenic to grapevine cultivar Inzolia in Sicily. This strain produced some metabolites in liquid medium. Crude extract, through a bio-guided purification process, yielded four naphthalenone polyketides. They were identified by comparison with spectroscopic data and optical proprieties reported in literature as: (3S, 4S)-7-ethyl-3,4,8-trihydroxy-6-methoxy-3,4-dihydro-1-(2H)-naphthalenone, (3S*, 4S*)-3,4-dihydro-3,4,8-trihydroxy-7-(1-hydroxyethyl)-6-methoxy-1-(2H)-naphthalenone, (4S)-3,4-dihydro-4,8-dihydroxy-1-(2H)-naphthalenone, named botryosphaerones D and A, isosclerone, respectively, and (3S*,4S*)-3,4,5-trihydroxy-1-…
Aportaciones sobre la corología y estado de conservación de algunas plantas raras y amenazadas del macizo del Penyagolosa
2019
Se comunican nuevas localidades, o se precisa la ubicación de antiguas citas, de diversas plantas vasculares consideradas raras o amenazadas en el conjunto de la flora del Macizo del Penyagolosa, la mayoría presentes en el municipio de Vistabella del Maestrat (Castellón). Se aportan datos poblacionales de algunas especies amenazadas para contribuir al seguimiento de su estado de conservación. The presence of new localities of various taxa of vascular plants is reported, which are considered rare or endangered for the flora of the Penyagolosa, mainly from Vistabella del Maestrat (Castellón). Population data of some endangered species are included to contribute to the monitoring of their cons…
Granulocytes of sea anemone Actinia equina (Linnaeus, 1758) body fluid contain and release cytolysins forming plaques of lysis
2014
The Cnidaria phylum includes organisms that are among the most poisonous animals. The exact composition of cnidarian bioactive molecules is not known in detail, but little is known on the cells that produce the toxins. Here we have shown that the presence of cytolysins is not exclusive of nematocysts. A plaque-forming assay was carried out with cell populations extracted from the percoled body fluid showed for the first time that anthozoan granulocytes are able to form plaque of lysis. We have partitioned the total population of free cells into three distinct discrete bands by discontinuous Percoll gradient, and we have identified six small different types cells: morular granulocytes; cells…
Indirect Selection against Antibiotic Resistance via Specialized Plasmid-Dependent Bacteriophages
2021
Antibiotic resistance genes of important Gram-negative bacterial pathogens are residing in mobile genetic elements such as conjugative plasmids. These elements rapidly disperse between cells when antibiotics are present and hence our continuous use of antimicrobials selects for elements that often harbor multiple resistance genes. Plasmid-dependent (or male-specific or, in some cases, pilus-dependent) bacteriophages are bacterial viruses that infect specifically bacteria that carry certain plasmids. The introduction of these specialized phages into a plasmid-abundant bacterial community has many beneficial effects from an anthropocentric viewpoint: the majority of the plasmids are lost whil…
Libertad religiosa y matrimonio
2019
Nuestra sociedad se caracteriza por ser globalizada, plural y diversa. Ello ha tenido su reflejo en los modelos de celebración del matrimonio que reconoce nuestro ordenamiento, siendo opcional para los contrayentes la elección de su modelo: matrimonio civil regulado por el Código civil, ya sea en forma civil o en las formas religiosas de las confesiones con acuerdo o con notorio arraigo, y el matrimonio canónico. Tomando como punto de partida el marco normativo, el trabajo explica los diversos modelos y la eficacia civil de los matrimonios religiosos. Seguidamente, analiza los desafíos que plantea a nuestra sociedad y derecho algunas cuestiones, como los matrimonios interculturales o interr…
Uusia käytäntöjä rakentamassa? : poliisi yhteistyön tekijänä kotouttavassa työssä
2019
Monialainen yhteistyö on yksi keskeinen työmenetelmä kotouttavassa työssä. Monialaisuus viittaa viranomaisten rinnalla järjestökentän, kieli- ja kulttuuritaustaisten yhteisöjen sekä yksityissektorin osallisuuteen yhteistyössä. Myös poliisi on yhtenä toimijana paikallisessa, monialaisessa yhteistyössä kotoutumisen edistämiseksi. Mutta mitä tämä yhteistyö on käytännössä poliisin työn näkökulmasta? Mitä poliisilta heidän nähdäkseen odotetaan ja millaista lisäarvoa poliisi kokee voivansa tuoda yhteistyöhön? Tämä artikkeli kuvailee poliisien kokemuksia yhteistyöstä perustuen väitöskirjatutkimuksen haastatteluaineistoon, joka on koottu neljän poliisilaitoksen alueelta Suomessa. Poliisityötä lähes…
Endocrine disrupters: the new players able to affect the epigenome
2015
Epigenetics represents the way by which the environment is able to program the genome; there are three main levels of epigenetic control on genome: DNA methylation, post-translational histone modification and microRNA expression. The term Epigenetics has been widened by NIH to include “both heritable changes in gene activity and expression but also stable, long-term alterations in the transcriptional potential of a cell that are not necessarily heritable.” These changes might be produced mostly by the early life environment and might affect health influencing the susceptibility to develop diseases, from cancer to mental disorder, during the entire life span. The most studied environmental i…