2,254 research outputs found
Leer y escribir : la lectura y la escritura en diferentes disciplinas en el comienzo de los estudios universitarios
No full textEste libro pertenece a los Manuales de cátedra de la UNAJ, para la materia Taller de Lectura y Escritura del Ciclo Inicial (Instituto de Estudios Iniciales). Este libro fue pensado por un grupo de profesores de dicha materia para nuestros estudiantes, y diseñado en función de ellos y de sus particularidades, este manual se propone colaborar con la mejora de sus habilidades de lecto-comprensión y escritura, con la finalidad de que puedan desarrollar con éxito su carrera universitaria y, posteriormente, su actividad profesional.Fil: Battilana, Carlos. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Battilana, Carlos. Universidad de Buenos Aires. Facultad de Filosofía y Letras; Argentina.Fil: Benítez, Ernesto. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Benítez, Ernesto. Universidad Nacional de Luján; Argentina.Fil: Ferrari, Mariela. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Ferrari, Mariela. Universidad de Buenos Aires. Facultad de Filosofía y Letras; Argentina.Fil: Ferrari, Mariela. Universidad Nacional de General Sarmiento; Argentina.Fil: Garbarini, Mónica. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: López D'Amato, Silvia. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: López D'Amato, Silvia. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Filología y Literaturas Hispánicas “Dr. Amado Alonso”; Argentina.Fil: Orlante, Emiliano. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Orlante, Emiliano. Universidad de Buenos Aires. Facultad de Filosofía y Letras; Argentina.Fil: Salinas, Martín. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Salinas, Martín. Universidad de Buenos Aires. Facultad de Filosofía y Letras; Argentina.Fil: Savio, Karina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Schnirmajer, Ariela. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Schnirmajer, Ariela. Universidad de Buenos Aires. Facultad de Filosofía y Letras; Argentina.Fil: Sozzi, Martín. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Literatura Hispanoamericana; Argentina.Fil: Sozzi, Martín. Universidad Nacional de Tres de Febrero. Programa de Estudios Literarios Latinoamericanos y Comparados; Argentina.Fil: Sozzi, Martín. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Vinelli, Elena. Universidad Nacional Arturo Jauretche. Instituto de Estudios Iniciales; Argentina.Fil: Vinelli, Elena. Universidad Nacional de Lomas de Zamora; Argentina
Comment to: Laparoscopic posterior cruroplasty: a patient tailored approach. Authors’ reply
No full textDifferences of CIGS cell performance with Zn(O, S)/(Zn, Mg)O or CdS/i-ZnO buffers system explored by numerical simulations
No full textStarting from the standard layer sequence of Mo/Cu(In, Ga)Se2/CdS/i-ZnO/ZnO:Al the cell n-side has been modified by replacing the CdS/i-ZnO with Zn(O, S) buffer in combination with (Zn, Mg)O as high-resistive layer, without changing the CIGS bulk. Measurements show a reduction of the cell performance compared to CdS/i-ZnO structure. In order to investigate the observed behavior, numerical simulations are used to examine the effect of the CIGS/Zn(O, S) interface properties on the cell performance. In particular, since the two sets of cells share the same CIGS, the effects on the solar cell's figures of merit of variations of the conduction band offset and defects properties at the buffer/absorber interface are analyzed
Effectiveness of 1-MCP treatments on ‘Bartlett’ pears as influenced by the cooling method and the bin material
No full textWooden bin-stored ‘Bartlett’ pears (Pyrus communis L.) were hydrocooled (HC) or forced-air cooled (FAC) and immediately treated or not with 1-methylcyclopropene (1-MCP) for 24 h. 1-MCP gas concentrations used were 0, 0.3 or 0.6 μL L−1 (called 0, 0.3 and 0.6, respectively). Fruit were subsequently kept at 20 °C for 20 d or stored at −0.5 °C and 95% RH for 60, 90, 120 or 150 d. After cold storage, fruit were kept at 20 °C for up to 16 d for further ripening. In another experiment, pears stored in wooden bins (W) or plastic bins (P) were all hydrocooled, treated or not with 0.5 μL L−1 1-MCP (called 0.5 and 0, respectively), stored at −0.5 °C and 95% RH for 0, 30, 60, 90 or 120 d, and transferred to 20 °C for further ripening. In FAC pears, increasing 1-MCP concentrations usually resulted in delayed increases in ethylene production and lower ethylene production rates, as well as delayed softening. In contrast, HC-0.3 pear firmness did not differ from that of HC-0 fruit after cold storage. Generally, HC-0.3 pears displayed higher ethylene production and lower firmness values than FAC-0.3 pears after a 7-d exposure to 20 °C, regardless the length of cold storage. FAC-0.6 pears always showed lower ethylene production rates and higher flesh firmness values than HC-0.6 fruit. Soluble solids concentration was not consistently affected by 1-MCP. FAC-0.3 and HC-0.6 fruit showed higher titratable acidity values than HC-0 fruit after 0, 60, 120 and 150 d of cold storage plus 7 d at 20 °C. Effectiveness of 1-MCP treatments on HC pears was influenced by the bin material; P-0.5 pears were firmer than W-0.5 pears after 7 d at 20 °C, regardless the length of the cold storage. HC-0.5 fruit exposed to −0.5 °C for 90 d reached eating quality (firmness ≤23 N) by day 7 if placed in W, and by day 21 when stored in P. Results and previous evidence suggest that wet wooden bin material may represent a major though unpredictable source of 1-MCP sorption that could bind a significant percentage of the 1-MCP applied. When used at relatively low doses 1-MCP partial removal by wet wooden bins can compromise the application effectiveness for controlling ethylene action.EEA Alto ValleFil: Calvo, Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Sozzi, Gabriel Oscar. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaFil: Sozzi, Gabriel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
The effect of gate and recess scaling on the gate-drain breakdown and hot-electron reliability of AlGaAs/GaAs power HFETs
No full textEpithelial-myoepithelial carcinoma of the minor salivary glands: immunohistochemical and morphological features.
No full textAims: Epithelial-myoepithelial carcinoma (EMC) is a rare malignant salivary gland neoplasm that most commonly occurs in the parotid gland, but can also arise in the minor salivary glands. Three cases are reported of epithelialmyoepithelial carcinoma of the minor salivary glands, with the goal of better defining this entity. Patients and Methods: All three cases showed a characteristic nodular/multinodular growth pattern and classic biphasic tubular histology. All parts of each tumor were surrounded by a myoepithelial cell rim and there was evidence of invasion. Results: Immunohistochemical analysis showed the tumor cells to be weakly positive for S1OO, cytokeratin (CK) CK5/6, CK7, CKAE-1/AE-3 and strongly positive for epithelial membrane antigen (EMA) and p63; they were focally positive for calponin and acute lymphoblastic leukemia antigen (CD1O). The tumor cells were negative for vimentin, a-smooth muscle actin (SMA) (except one case), glial fibrillar acid protein (GFAP) and MIB1. The tumors were resected completely with wide margins and no recurrence or metastasis had occurred from 6 to 15 months after surgery. Conclusion: Three cases of minor salivary gland tumors are described and the differential diagnosis underlined in relation to benign myoepithelioma. The characteristic morphological and immunohistochemical features aided diagnosis of these biphasic tumors
Satellite Monitoring of Italian Vineyards and Spatio-Temporal Variability Assessment
No full textSentinel-2 (S2) is widely considered a reliable satellite constellation for monitoring several crops, such as grapevine (Vitis vinifera L.). A large dataset of Italian vineyards randomly chosen was monitored with S2 from 2017 to 2022. Two vegetation indices (VIs) and their statistics were calculated from each vineyard. In addition, structural features and topographic information were assessed using Google Earth and national databases. The research study aims to identify the most relevant drivers of spatial variability by assessing the VIs among the whole dataset and the within-vineyard variability. The latitude and the vintage showed the most relevant effect on spatial variability, depicting the effect of daylight hours, climate conditions and weather events. However, the vintage did not affect the patterns of the within-field variability. Regarding grapevine management, training systems and the rows' orientation were relevant boosters of variability. While the vineyards planted with north-south-oriented rows reached the highest VIs values, the east-west-oriented ones showed the highest variability. Finally, an interaction effect was detected between hill or plain plantation and the terrain slope on both the average and variability of the VIs. The conclusions from the present study suggest the relevance of clustering vineyards under remote supervision according to the structural features to reduce data variability. Further studies should investigate other structural features or managerial properties
Tuning the (Zn,Mg)O Layer Thickness for Improved Efficiency in CIGS Solar Cells with Zn(O,S) Buffer: A Numerical Investigation
No full textWe investigate the behavior of the solar cell with layer sequence ZnO:Al/Zn0.75Mg0.25O/Zn(O,S)/CIGS for various Zn0.75Mg0.25O (ZMO) thicknesses by comparing the measured cell parameters with the ones obtained by numerical simulations. The combined effects of different conduction band alignments at heterolnterfaces, carrier lifetime in the CIGS bulk, and ZMO layer thickness are analyzed. The impact on the cell performance of acceptor defects at the CIGS/Zn(O,S) interface is also studied. The optimal ZMO thickness corresponding to the highest conversion efficiency is then calculated for all the different conditions
Three-dimensional lip morphometry in adults operated on for cleft lip and palate
No full textMeasurements were taken from 18 patients operated on for cleft lip and palate, aged 19 to 27 years, and 162 control subjects matched for sex, age, and ethnic group. Nine soft-tissue landmarks on the lips were digitized by a three-dimensional electromagnetic instrument. From the landmarks, several linear distances (mouth width, philtrum width, vermilion height of upper and lower lip, total vermilion height, total lip height), the interlabial angle, and some areas (vermilion of upper lip, vermilion of lower lip, total vermilion) and volumes (upper lip volume, lower lip volume, total lip volume) were calculated. Patient and reference data were compared by t tests and Watson-Williams tests. In the men, significant differences (p < 0.05) were found in width of the philtrum, height and area of the vermilion part of the upper lip, and total vermilion height and area (all larger in male patients than in controls). In the women, significant differences were found in the height and area of the vermilion part of the upper lip (larger in female patients than in controls), and in the height and area of the vermilion part of the lower lip (smaller in patients than in controls). In both sexes, the interlabial angle was smaller than in the reference population. In conclusion, the upper lip of adult patients operated on for cleft lip and palate differed from that of healthy controls of the same age, sex, and ethnic group. Surgical correction of cleft lip and palate failed to provide a completely normal appearance. The analysis pointed out those parts of the lips and mouth (in particular, the vermilion part of the upper lip) that differed the most from the norm. The method may be used to indicate to the surgeon and patient where additional procedures might be performed to approximate the morphologic characteristics of a reference population
Atypical holistic processing of facial identity and expression in a case of acquired prosopagnosia
No full textTypical face perception is mediated by holistic processing (i.e., the simultaneous integration of face parts into a whole representation). People with Acquired Prosopagnosia (AP), who have lost the ability to recognise faces after a brain lesion, should thus show atypical holistic coding. Our aim is to use the composite-face effect (CFE) as a measure of holistic processing in ST, a 48-year-old woman with AP but normal recognition of facial expressions of emotions, and matched healthy control participants. Two experiments examining the CFE for identity (Experiment 1) and for expression of emotions (Experiment 2) were conducted. Contrary to controls, in both experiments, ST showed an atypical (i.e., reversed) CFE, thus suggesting altered holistic mechanisms affecting both components of perceptual judgement. Results also suggest that normal facial expression recognition is achievable even with holistic processing difficulties, possibly through compensatory, part-based, mechanisms
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