Los límites de la alteridad: el otro desde la energética social

Otherness has been taken up from many perspectives as Education, Language, Psychopedagogy, Psychology, Sociology, Anthropology and Philosophy. That's why it is necessary to make a recapitulation of the progress about this topic. When performing this review, it became evident that none of the current perspectives provide a solid base to “the Other's problem”. Due to this, this article aims to track that material base of Otherness, by the social energetic perspective. This is not simple scientific curiosity, since finding that base allows restating the possible ways to interact with the other.La alteridad ha sido abordada desde varias perspectivas, como la educación, el lenguaje, la psicopedagogía, la psicología, la sociología, la antropología o la filosofía, por lo que se ha considerado necesario efectuar una recapitulación de los avances en el tema. Al llevar a cabo esa revisión, se hizo evidente que ninguna de las perspectivas aporta una base material al "problema del otro". En este artículo se busca, mediante la perspectiva de la energética social, rastrear dicha base material de la alteridad

Photovoltaic module segmentation and thermal analysis tool from thermal images

The growing interest in the use of clean energy has led to the construction of increasingly large photovoltaic systems. Consequently, monitoring the proper functioning of these systems has become a highly relevant issue.In this paper, automatic detection, and analysis of photovoltaic modules are proposed. To perform the analysis, a module identification step, based on a digital image processing algorithm, is first carried out. This algorithm consists of image enhancement (contrast enhancement, noise reduction, etc.), followed by segmentation of the photovoltaic module. Subsequently, a statistical analysis based on the temperature values of the segmented module is performed.Besides, a graphical user interface has been designed as a potential tool that provides relevant information of the photovoltaic modules.Comment: 7 pages, 12 Figure

Bioactive phenolic compounds : production and extraction by solid-state fermentation. A review

Interest in the development of bioprocesses for the production or extraction of bioactive compounds from natural sources has increased in recent years due to the potential applications of these compounds in food, chemical, and pharmaceutical industries. In this context, solid-state fermentation (SSF) has received great attention because this bioprocess has potential to successfully convert inexpensive agro-industrial residues, as well as plants, in a great variety of valuable compounds, including bioactive phenolic compounds. The aim of this review, after presenting general aspects about bioactive compounds and SSF systems, is to focus on the production and extraction of bioactive phenolic compounds from natural sources by SSF. The characteristics of SSF systems and variables that affect the product formation by this process, as well as the variety of substrates and microorganisms that can be used in SSF for the production of bioactive phenolic compounds are reviewed and discussed.We acknowledge the financial support of Science and Technology Foundation of Portugal through grants SFRH/BD/40439/2007 and SFRH/BPD/38212/2007, and Mexican Council of Science and Technology through program SEP-CONACYT-24348/2007-2010

Effect of sugarcane silage on productive parameters of replacement Holstein-Friesian heifers

ABSTRACTObjective. Measure the productive parameters of Holstein-Friesian females from weaning to 470 days old, comparing feeding through sugarcane silage (SCS) and corn silage (CS) in a concentrated fodder ratio of 70:30. Materials and methods. Twenty-eight post-weaning calves were used, with an average age of 80±16 days old and an initial weight of 79.5±12.9 kg. The T-Student test was used for the comparison of means, where calves were divided into two groups of 14, one for each treatment. The body weight BW (kg), wither height WH (cm), body condition BC (1 to 5 scale), daily weight gain DWG (kg) and feed conversion FC (kg) was measured every 30 days. Results. Differences were found between treatments, where heifers fed with SCS showed better BC (3.12), FC (7.4) as compared to the CS treatment. No significant differences were found in terms of DWG (0.666 and 0.743 kg/d). Conclusions. Feeding based on sugarcane silage allows for an improved body condition and feed conversion of animals having with this an acceptable and cost-effective production performance in the raising of dairy replacements

A Comment on Quantum Distribution Functions and the OSV Conjecture

Using the attractor mechanism and the relation between the quantization of $H^{3}(M)$ and topological strings on a Calabi Yau threefold $M$ we define a map from BPS black holes into coherent states. This map allows us to represent the Bekenstein-Hawking-Wald entropy as a quantum distribution function on the phase space $H^{3}(M)$. This distribution function is a mixed Husimi/anti-Husimi distribution corresponding to the different normal ordering prescriptions for the string coupling and deviations of the complex structure moduli. From the integral representation of this distribution function in terms of the Wigner distribution we recover the Ooguri-Strominger-Vafa (OSV) conjecture in the region "at infinity" of the complex structure moduli space. The physical meaning of the OSV corrections are briefly discussed in this limit.Comment: 27 pages. v2:reference and footnote adde

Geometric Transition as a Change of Polarization

Taking the results of hep-th/0702110 we study the Dijkgraaf-Vafa open/closed topological string duality by considering the wavefunction behavior of the partition function. We find that the geometric transition associated with the duality can be seen as a change of polarization.Comment: 20 page

MTF1, a classic metal sensing transcription factor, promotes myogenesis in response to copper [preprint]

MTF1 is a conserved metal-binding transcription factor in eukaryotes that binds to conserved DNA sequence motifs, termed metal response elements (MREs). MTF1 responds to metal excess and deprivation, protects cells from oxidative and hypoxic stresses, and is required for embryonic development in vertebrates. We used multiple strategies to identify an unappreciated role for MTF1 and copper (Cu) in cell differentiation. Upon initiation of myogenesis from primary myoblasts, MTF1 expression increased, as did nuclear localization. Mtf1 knockdown impaired differentiation, while addition of non-toxic concentrations of Cu+ enhanced MTF1 expression and promoted myogenesis. Cu+ bound stoichiometrically to a C-terminus tetra-cysteine of MTF1. MTF1 bound to chromatin at the promoter regions of myogenic genes and binding was stimulated by copper. MTF1 formed a complex with MyoD at myogenic promoters, the master transcriptional regulator of the myogenic lineage. These studies establish novel mechanisms by which copper and MTF1 regulate gene expression in myoblast differentiation

Resistencia in vitro de la garrapata equina (Dermacentor nitens) en el departamento de Córdoba, Colombia

Determine the resistance of the tick Dermacentor nitens to metrifonate (Neguvon®, Bayer©, Germany), cypermethrin (Ganabaño®, Novartis©, USA), and amitraz (Triatox®, Schering Plough ©, USA). A non-probabilistic convenience experimental study, five plots where teleogines 120 engorged D. nitens were collected, the teleogines were subjected to immersion test according to Drummond. It was found that the treatment was less chemoresistance produced amitraz 97% effective, followed by 93% cypermethrin and 53% respectively metrifonate. An oviposition evaluation, it was found that amitraz is the most effective 23%, cypermethrin 18% and then metrifonate 1%. The percentage hatching assessment was higher for metrifonate 18.97%, cypermethrin 4.70% and Amitraz 1.68% respectively. It is concluded that amitraz is the most effective acaricide in vitro not only affect adults but to eliminate the cycle of D. nitens, but its use in practice is unlikely in vivo by toxic effects in horses. Among the products used in horses, cypermethrin is the drug of choice.Determinar la resistencia de la garrapata Dermacentor nitens a metrifonato (Neguvon®, Bayer©, Alemania), cipermetrina (Ganabaño®, Novartis©, USA), y amitraz (Triatox®, Schering Plough©, USA). Un estudio experimental no probabilístico por conveniencia, de cinco predios, donde se recolectaron 120 teleogínas ingurgitadas de D. nitens, las teleogínas fueron sometidas a inmersión según prueba de Drummond. Se encontró que el tratamiento que menos quimioresistencia produjo fue amitraz con 97% de efectividad, seguido por cipermetrina con 93% y metrifonato con 53% respectivamente. A la evaluación de la oviposición, se encontró que amitraz es el de mayor efectividad 23%, luego cipermetrina 18% y metrifonato con 1%. La evaluación porcentual de eclosión fue mayor para el metrifonato con 18,97%, cipermetrina con 4,70% y amitraz con 1,68% respectivamente. Se concluye que amitraz es el acaricida más efectivo in vitro no solo para eliminar adultos sino afectar el ciclo de D. nitens, pero su uso en la práctica in vivo es improbable por los efectos tóxicos en équidos. Entre los productos utilizables en los equinos, la cipermetrina es el fármaco de elección

Determination of the optical bandgap and disorder energies of thin amorphous SiC and AlN films produced by radio frequency magnetron sputtering

Amorphous aluminum nitrite and silicon carbide (a-AlN and a-SiC) thin films were prepared by radio frequency magnetron sputtering. Due to the deposition method and production conditions the deposited films grown in amorphous state. We systematically measure the optical bandgap through optical transmission spectroscopy and its change with a cumulative thermal annealing. The results show a linear relation between the Tauc-gap and the Tauc-slope for both AlN and SiC films, which can be explained analytically from the existence of an Urbach focus, and therefore can be used to determine the Urbach focus or to ensure the correct usage of the bandgap determination methods

Radiographers supporting radiologists in the interpretation of screening mammography: a viable strategy to meet the shortage in the number of radiologists.

BackgroundAn alternative approach to the traditional model of radiologists interpreting screening mammography is necessary due to the shortage of radiologists to interpret screening mammograms in many countries.MethodsWe evaluated the performance of 15 Mexican radiographers, also known as radiologic technologists, in the interpretation of screening mammography after a 6 months training period in a screening setting. Fifteen radiographers received 6 months standardized training with radiologists in the interpretation of screening mammography using the Breast Imaging Reporting and Data System (BI-RADS) system. A challenging test set of 110 cases developed by the Breast Cancer Surveillance Consortium was used to evaluate their performance. We estimated sensitivity, specificity, false positive rates, likelihood ratio of a positive test (LR+) and the area under the subject-specific Receiver Operating Characteristic (ROC) curve (AUC) for diagnostic accuracy. A mathematical model simulating the consequences in costs and performance of two hypothetical scenarios compared to the status quo in which a radiologist reads all screening mammograms was also performed.ResultsRadiographer's sensitivity was comparable to the sensitivity scores achieved by U.S. radiologists who took the test but their false-positive rate was higher. Median sensitivity was 73.3 % (Interquartile range, IQR: 46.7-86.7 %) and the median false positive rate was 49.5 % (IQR: 34.7-57.9 %). The median LR+ was 1.4 (IQR: 1.3-1.7 %) and the median AUC was 0.6 (IQR: 0.6-0.7). A scenario in which a radiographer reads all mammograms first, and a radiologist reads only those that were difficult for the radiographer, was more cost-effective than a scenario in which either the radiographer or radiologist reads all mammograms.ConclusionsGiven the comparable sensitivity achieved by Mexican radiographers and U.S. radiologists on a test set, screening mammography interpretation by radiographers appears to be a possible adjunct to radiologists in countries with shortages of radiologists. Further studies are required to assess the effectiveness of different training programs in order to obtain acceptable screening accuracy, as well as the best approaches for the use of non-physician readers to interpret screening mammography