Search results for " Reproduction"
showing 10 items of 282 documents
Extracellular Vesicles in Human Reproduction in Health and Disease.
2017
Extensive evidence suggests that the release of membrane-enclosed compartments, more commonly known as extracellular vesicles (EVs), is a potent newly identified mechanism of cell-to-cell communication both in normal physiology and in pathological conditions. This review presents evidence about the formation and release of different EVs, their definitive markers and cargo content in reproductive physiological processes, and their capacity to convey information between cells through the transfer of functional protein and genetic information to alter phenotype and function of recipient cells associated with reproductive biology. In the male reproductive tract, epididymosomes and prostasomes p…
Determination of milk production losses and variations of fat and protein percentages according to different levels of somatic cell count in Valle de…
2018
The somatic cell count (SCC) of milk is widely used to monitor udder health and the milk quality and because of its positive genetic correlation with mastitis this trait was included in breeding schemes of dairy sheep. The aim of this study was to estimate the loss in milk yield (MY) and related composition resulting from different levels of somatic cell count in Valle del Belice dairy sheep. Data were collected between 2006 and 2016 in 15 flocks following an A4 recording scheme. Somatic cell count (SCC), fat and protein percentage (F% and P%) were determined using mid-infrared spectroscopy. To evaluate loss in test day MY, F% and P%, five different classes of SCC were arbitrarily defined: …
Analysis of surrogacy motherhood as a new technology in the biomedical and legal-philosophical field: technical advance, human recoil
2019
[EN] Surrogate motherhood is a question that has appeared in recent times, with increasing incidence, at present. The economic, political and media powers have brought a strictly technical concept to the public in order to familiarize them with this technique. This strategy has been based on the natural tendency to consider that any technological advance is good in itself, so that they have not been reviewed and made available to the citizens, in a reasonable manner, none of the issues that should be dealt with this technique. Thus, it is worth making a study of the regulations and jurisprudence of the assumptions that have been taking place and considering the reality that this formulation…
Marx's critique of ideology for discourse analysis: from analysis of ideologies to social critique
2018
The notion of ideology is related to social and material reality and especially to the processes of social reproduction. Therefore, the analysis of ideology seems to fall into the domain of discourse analysis. The analysis of language and practices of signification in social contexts constitutes the basic triangle of discourse analysis. However, the Marxist concept of ideology always refers to some kind of falsity, that ultimately enables the researcher to not only analyse but also to criticize ideologies. Ideologies are always in some way false, injust or inadequate. It is at this point that discourse analysts usually raise the most serious objections as they understand truth itself as a d…
A model of COVID-19 pandemic evolution in African countries
2021
We studied the COVID-19 pandemic evolution in selected African countries. For each country considered, we modeled simultaneously the data of the active, recovered and death cases. In this study, we used a year of data since the first cases were reported. We estimated the time-dependent basic reproduction numbers, $R_0$, and the fractions of infected but unaffected populations, to offer insights into containment and vaccine strategies in African countries. We found that $R_0\leq 4$ at the start of the pandemic but has since fallen to $R_0 \sim 1$. The unaffected fractions of the populations studied vary between $1-10$\% of the recovered cases.
Cuestiones varias en torno a la determinación de la filiación por doble paternidad
2018
The article 7.3 of the law 14/2006, of May 26 on technologies of human assisted reproduction establishes the possibility of determining legally the double maternity of married women and not separated legally or of fact, when the not biological mother consents that filiation decides to his favor the respect of the born son of his spouse. In the suppositions not regulated in the mentioned rule the Supreme Court in relation with equal women?s homosexuality in judgment of December 5, 2013 and January 15, 2014 applies the civil code and allows to determine judicially the maternity by means of the exercise of an action of claim for possession of status foreseen in the article 131. In the present …
La reproducción asistida y la filiación. Especial referencia al caso de las parejas de mujeres homosexuales
2018
This paper analyses, in general, the evolution that has had the art. 7.3 LTRHA since its introduction by the Act 3/2007, 15 march. In that way, it shows which has been the legislator´s solution about the use of assisted reproduction tecniques by homosexual women couples. Likewise, it studies which resolutions on the matter have been more relevant in the last years. All this, to set out the legislator´s failure and the need to reformulate the filiation regime in face of the challenge that assisted reproduction implies.
Reflections about the authentic document in "post mortem" fecundation
2018
[EN] The legislation on assisted reproduction contemplates the ¿post mortem¿ fecundation. Nevertheless, the document for the presentation of the assent raises some doubts in relation with the principle of party autonomy and the new technologies of the information and communication (ICTs). In the present work one thinks about these questions and one tries to contribute some solution of application in the Spanish legal system.
Las técnicas de reproducción asistida en la jurisprudencia y en el cine de los Óscar
2018
El paso del tiempo y los grandes avances técnicos han dado lugar a que se puedan tener hijos no solo de forma biológica o por adopción sino también mediante otras técnicas o tratamientos médicos que facilitan el embarazo cuando éste no se consigue de forma natural. Actualmente, los principales tratamientos de fertilidad son la inseminación artificial y la fecundación in vitro (FIV). En este artículo se abordan las técnicas de reproducción asistida desde dos puntos de vista: el fílmico, analizando algunas películas que han sido nominadas a los Óscar en época reciente; y el jurídico, viendo la regulación legal y algunas de las sentencias más relevantes existentes hasta la fecha sobre este tem…
Color constancy in dermatoscopy with smartphone
2017
The recent spread of cheap dermatoscopes for smartphones can empower patients to acquire images of skin lesions on their own and send them to dermatologists. Since images are acquired by different smartphone cameras under unique illumination conditions, the variability in colors is expected. Therefore, the mobile dermatoscopic systems should be calibrated in order to ensure the color constancy in skin images. In this study, we have tested a dermatoscope DermLite DL1 basic, attached to Samsung Galaxy S4 smartphone. Under the controlled conditions, jpeg images of standard color patches were acquired and a model between an unknown device-dependent RGB and a device independent Lab color space h…