The objective of the present study was to determine the effect of supplementing acidifiers to weaned piglets and sows on productive and health parameters. In the first assaywas used 360 weaned piglets from21 till 42 days of age, randomly distributed into three treatments: a) control group without acidifier, b) supplemented with microencapsulated acidifier, and c) supplemented with powder acidifier. In the second assay, 27 sows were used fromday 93 of gestation till end of lactation (21 days), randomly distributed into two treatments: a) control group without acidifier, and b) supplemented withmicroencapsulated acidifier. In the first assay, none statistical differences were found between treated groups on bodyweight gain fromweaning till 42 days of age (175 g/day), feed intake (357 g/day per animal), feed conversion index (1.03), and diarrhea cases (19.7%). In the second assay, none stat...

El objetivo del presente estudio fue determinar el efecto de suplementar acidificantes a gorrinos ymarranas sobre sus parámetros productivos y de salud. En el primer ensayo se utilizó 360 gorrinos desde los 21 a los 42 días de edad, distribuidos al azar en tres tratamientos: a) grupo control sin acidificante, b) grupo suplementado con acidificante microencapsulado, y c) grupo suplementado con acidificante en polvo. En el segundo ensayo se utilizó 27 marranas desde el día 93 de gestación hasta el destete (21 días postparto), distribuidos al azar en dos tratamientos: a) grupo control, y b) grupo suplementado con acidificante microencapsulado. En el primer ensayo no se encontraron diferencias significativas entre grupos en la ganancia de peso entre el destete y los 42 días de edad (175 g/día), consumo de alimento (357 g/día por gorrino), índice de consumo (1.03), y casos de diarr...

321-2009-Concytec-OAJ

Nanoestructured TiO2 solar cells modified with MgO (TiO2-MgO) were assembled and characterized; they were sensitized with N791 dye. The MgO modification of the TiO2 films was performed using suspensions with different concentrations of Mg(OH)2 prepared from magnesium nitrate in aqueous solution. One drop of the suspension was placed on top of the film and then was sintered at 530 °C during 30 min. Unsealed cells and sealed cells were obtained, the latter achieved an efficiency of 4.4%, representing an increase of 69% compared to the unmodified sealed cells, which showed an efficiency of 2.6%. Solar efficiency measurements were also performed in darkness and under illumination. It was found that the efficiency diminished 19% in darkness after 22 days, but under illumination diminished 76 % in two days. 

The 2016 Mw 6.1 Parina earthquake ruptured a shallow-crustal normal fault within the high Andes of south Peru. We use high-resolution DEMs and field mapping of the surface ruptures generated by the earthquake, in combination with co-seismic and post-seismic InSAR measurements, to investigate how different features of the geomorphology at Parina are generated by the earthquake cycle on the Parina Fault. We systematically mapped 12 km of NW-SE trending surface ruptures with up to ~27 cm vertical displacement and ~25 cm tensional opening along strike, separated by a gap with no observable surface ruptures. Co- and post-seismic InSAR measurements require slip below this gap in surface ruptures, implying that surface offsets observed in paleoseismic trenches may not necessarily be representative of slip at seismogenic depths, and will typically yield an underestimate of paleo-earthquake magni...

The Abancay Deflection, forming the northern edge of the Altiplano in the Peruvian Andes, is a remarkable geomorphological feature marking the along-strike segmentation of the Andes. Little is known about the timing and spatial distribution of exhumation in this area. To constrain the exhumation history of the Abancay Deflection and its drivers, we present apatite (U–Th)/He and fission-track thermochronology data from samples collected along an elevation transect at Machu Picchu. Geomorphological analysis demonstrates recent and continuing drainage reorganization recorded by the spatial distribution of the normalized steepness index (ksn ) and normalized integrated drainage area (?) parameters. Thermochronologically derived cooling rates are converted into exhumation using regionally constrained geothermal gradients between 16 and 26°C km?1. Time–temperature inversions imply steady ...

Objective: To determine the morphology and weight of the placental vascular tree. Material and Methods: Twenty seven placentas were collected from normal pregnant women who had prenatal care at Clinica Villa Maria–EsSalud. Patients who had diabetes mellitus, arterial hypertension, preeclampsia, nephropathy, Rh isoimmunization and anemia were not included. The specimens were rinsed with tap water for 30 minutes, the fetal membranes were trimmed off at the level of its insertion. The placentas were weighed and the umbilical vessels were catheterized and flushed with 100 mL of normal saline solution and then the acrylic solution (15 mL of liquid with 7,5 of powder) was injected. The placentas were immersed in hot water for 30 minutes then fixed in 10% formaldehyde for two hours and finally immersed in hydrochloric acid for 7 days in order to obtain the acrylic cast of the placental vascul...

Objective: To determine the morphology and weight of the placental vascular tree. Material and Methods: Twenty seven placentas were collected from normal pregnant women who had prenatal care at Clinica Villa Maria–EsSalud. Patients who had diabetes mellitus, arterial hypertension, preeclampsia, nephropathy, Rh isoimmunization and anemia were not included. The specimens were rinsed with tap water for 30 minutes, the fetal membranes were trimmed off at the level of its insertion. The placentas were weighed and the umbilical vessels were catheterized and flushed with 100 mL of normal saline solution and then the acrylic solution (15 mL of liquid with 7,5 of powder) was injected. The placentas were immersed in hot water for 30 minutes then fixed in 10% formaldehyde for two hours and finally immersed in hydrochloric acid for 7 days in order to obtain the acrylic cast of the placental vascul...

Our understanding of the style and rate of Quaternary tectonic deformation in the forearc of the Central Andes is hampered by a lack of field observations and constraints on neotectonic structures. Here we present a detailed analysis of the Purgatorio fault, a recently recognized active fault located in the forearc of southern Peru. Based on field and remote sensing analysis (Pléiades DEM), we define the Purgatorio fault as a subvertical structure trending NW-SE to W-E along its 60 km length, connecting, on its eastern end, to the crustal Incapuquio Fault System. The Purgatorio fault accommodates right-lateral transpressional deformation, as shown by the numerous lateral and vertical plurimetric offsets recorded along strike. In particular, scarp with a 5 m cumulative throw is preserved and displays cobbles that are cut and covered by slickensides. Cosmogenic radionuclide exposure datin...

Background: Although the Hospital Anxiety and Depression Scale (HADS) has been widely studied across various populations, there is still no consensus on its factor structure. This study aims to evaluate the psychometric properties of the HADS in cancer patients.

Within Latin America, about 319 volcanoes have been active in the Holocene, but 202 of these volcanoes have no seismic, deformation or gas monitoring. Following the 2012 Santorini Report on satellite Earth Observation and Geohazards, the Committee on Earth Observation Satellites (CEOS) developed a 4-year pilot project (2013-2017) to demonstrate how satellite observations can be used to monitor large numbers of volcanoes cost-effectively, particularly in areas with scarce instrumentation and/or difficult access. The pilot aims to improve disaster risk management (DRM) by working directly with the volcano observatories that are governmentally responsible for volcano monitoring as well as with the international space agencies (ESA, CSA, ASI, DLR, JAXA, NASA, CNES). The goal is to make sure that the most useful data are collected at each volcano following the guidelines of the Santorini repo...