Resiliencia y agresividad en adolescentes de tres instituciones educativas, del distrito de Los Olivos, 2016

La presente investigación tuvo como objetivo general determinar la relación entre resiliencia y agresividad en adolescentes de tres Instituciones Educativas, del Distrito de Los Olivos, 2016. El tipo investigación utilizado es el Descriptivo- Correlacional y diseño no experimental. La muestra estuvo conformada por 279 adolescentes de 13 a 17 años, de ambos sexos que cursan el 3°,4° y 5° de Secundaria. Se utilizó el Cuestionario de Agresión (AQ) y la Escala de Resiliencia de Wagnild y Young (ER) . Los resultados fueron que los adolescentes cuentan con 43% mayor capacidad de resiliencia y un nivel de agresividad bajo de 49.8%. Asimismo se mostró que existían correlaciones inversas y significativas entre resiliencia y las cuatro dimensiones de agresividad (agresión verbal, agresión fisica, ira y hostilidad). De la misma manera se encontró correlaciones significativas en cuanto a la resiliencia y agresividad con las variables sociodemografias (según grado de estudio, sexo y edad). De la misma manera la presente investigación empírica estimó la existencia de correlación inversa, baja y significativa [rs= -.295**, p = <.001] entre las variables del estudio. Lo que indica que si existe relación entre resiliencia y agresividad afirmándose la hipótesis respectiva

Psychiatric disorders and comorbidity in a Spanish sample of prisoners at the end of their sentence : Prevalence rates and associations with criminal history

This study examined, for the first time, the prevalence of mental disorders and comorbidities among inmates who were about to be released, and their association with criminal history. A Spanish sample of 140 prisoners at the end of their sentence was recruited from an occupational program. Psychiatric disorders were determined according to the Diagnostic and Statistical Manual of Mental Disorders criteria. Bivariate analyses followed by multivariate regression models were conducted to identify significant variables for repeat incarceration and violent offending. The lifetime prevalence of Axis I disorders was 81.4%, with substance use disorders (SUD) and attention deficit/hyperactivity disorder (ADHD) being the most common diagnoses (51.4 and 31.4%, respectively). The current prevalence of Axis I disorders was 59.0%, including learning disorders (38.6%), ADHD (16.4%), and SUD (5.71%) among the most frequent syndromes. Thirty-six (26.5%) participants met criteria for a current Axis II disorder, which commonly was an antisocial personality disorder (12.5%). The majority of the sample (60.8%) suffered from two or more comorbid disorders during their lifetime, although the current prevalence fell to 23.3%. Childhood ADHD increased the number of imprisonments, while inmates convicted of a violent crime were more likely to present a learning disorder. Having a lifetime diagnosis of SUD or multiple psychiatric disorders appeared to be associated with both repeat incarceration and violent offending. Given the high rate of mental disorders still present among subjects completing prison sentences and the challenges they may encounter to benefit from vocational programs, our results suggest that appropriate psychiatric care should be provided during imprisonment and after release to facilitate their community reintegration

Diseño del proceso de aplicación de la herramienta 5 "S" para incrementar la productividad en el área de almacén de filtros en la empresa Evolution Car Service E.I.R.L.

El presente trabajo de investigación estuvo enfocado en diseñar un proceso de aplicación de la herramienta 5 “S” para incrementar la productividad del almacén de filtros de la empresa EVOLUTION CAR SERVICE E.I.R.L., teniendo en cuenta la situación problemática de la empresa. El diseño creado muestra la forma de aplicar la herramienta 5 “S” para evitar tener un almacén con distribución inadecuada, desordenado y sucio que pueda afectar a la empresa y con ello lograr incrementar la productividad del almacén. Se utilizó como técnicas de recolección de datos: La observación directa, encuestas, listas de verificación, entrevistas y análisis documentario, así como también instrumentos como guías de observación, cuestionarios, hojas de registro y guías de entrevista. El estudio se inició determinando la situación problemática en el área de almacén de filtros, a través de un diagrama de Ishikawa, listas de verificación y un análisis de productividad inicial de mano de obra, permitiendo determinar que la inadecuada distribución de los espacios, el desorden y falta de higiene son causas potenciales para una baja productividad. Luego se realizó una representación gráfica del diseño de la forma de aplicar la herramienta 5 “S” en el almacén de filtros, en seguida del esquema se mostró el desarrollo que se sigue para cada “S”. Posteriormente se definió el impacto que originaría la aplicación de la herramienta 5 “S”, ident ificando beneficios cualitativos como lograr una mejor calidad de servicio al cliente, personal motivado y capacitado, mejor distribución de los espacios, etc. Finalmente se determinó el presupuesto y el impacto económico que generaría la mejora de la empresa, determinando que el costo total para implementar la mejora en la empresa es S/.2, 483.05, así mismo se realizó una evaluación financiera del proyecto por el periodo de 5 meses, obteniendo un VAN de S/. 6,363.11, una TIR de 78% y un beneficio/costo de 2.83, demostrando que el proyecto es rentable. Para determinar estadísticamente la viabilidad del proyecto, se realizó una prueba de hipótesis, dando como resultado que la hipótesis planteada, estadísticamente es aceptada.The present research work was focused on designing a process for applying tool 5 “S” to increase the productivity of the filter store of the company EVOLUTION CAR SERVICE E.I.R.L., taking into account the problematic situation of the company. The design created shows how to apply tool 5 “S” to avoid having a warehouse with inadequate, messy and dirt y distribution that can affect the company and thereby increase the productivity of the warehouse. It was used as data collection techniques: Direct observation, surveys, checklists, interviews and documentary analysis, as well as instruments such as observation guides, questionnaires, registration sheets and interview guide. The study began by determining the problematic situation in the filter warehouse area, through an Ishikawa diagram, checklists and an analysis of initial labor productivity, allowing to determine that the inadequate distribution of spaces, disorder and lack of hygiene are potential causes for low productivity. Then a graphic representation of the design of how to apply tool 5 “S” in the filter store was made, followed by the scheme, the development that is followed for each “S” was shown. Subsequently, the impact that would result in the applicat ion of the 5 “S” tool was defined, identifying qualitative benefits such as achieving a better quality of customer service, motivated and trained personnel, better distribution of spaces, etc. Finally, the budget and the economic impact of the improvement of the company were determined, determining that the total cost to implement the improvement in the company is S /. 2, 483.05, a financial evaluation of the project was also carried out for the period of 5 months, obtaining a NPV of S /. 6,363.11, an IRR of 78% and a benefit / cost of 2.83, demonstrating that the project is profitable. In order to determine the feasibility of the project statistically, a hypothesis test was performed, resulting in the statistically accepted hypothesis.Tesi

Application of Citrus By-Products in the Production of Active Food Packaging

Some citrus by-products such as orange peel contains valuable compounds that could be recovered and restored into the food chain. In this study, an efficient valorization of orange peel has been investigated using green extraction, fractionation, and impregnation techniques. The first step included its extraction using CO2 and ethanol under different pressure (200-400 bar) and temperature (35-55 degrees C) conditions. The extracts obtained at 300 bar and 45 degrees C showed strong antioxidant with moderate antimicrobial activity. Then, the extract was subjected to a sequential fractionation process. The fraction obtained at 300 bar, 45 degrees C, and using 32% ethanol showed the strongest antioxidant and antimicrobial activity with a high extraction yield. Finally, the potential of the two best extracts (obtained at 400 bar and 45 degrees C before any fractionation and the fractions obtained at 300 bar, 45 degrees C using 32% ethanol) was determined by conducting an impregnation process to obtain an antioxidant food-grade rigid plastic that would preserve fresh food. The percentage of cosolvent (1 and 2% ethanol), the impregnation time (1 and 3 h), the pressure (200 and 400 bar), and the temperature (35 and 55 degrees C) were evaluated as variables of this process. The impregnated plastic showed good antioxidant and antimicrobial activitiesWe gratefully acknowledge the Spanish Ministry of Science and Technology (Project CTQ2014-52427-R) for its financial support through FEDER (European Funds for Regional Development)

TASA DE OCURRENCIA DE LYCALOPEX SECHURAE (CANIDAE, CARNIVORA) EN EL SITIO RAMSAR MANGLARES SAN PEDRO DE VICE (PIURA, PERU): BASE PARA MONITOREO DEL IMPACTO POR EXPLOTACIÓN DE HIDROCARBUROS

Se ha indicado la presencia de (Lycalopex sechurae), en el Sitio Ramsar Manglares San Pedro de Vice (SRMSPV), Piura, Perú pero no se ha considerado su tamaño poblacional por la dificultad que presenta el estudio de esta especie y descartaron el uso de huellas como estimador debido a las características del lugar. Una forma de estimar tamaños poblacionales de especies como L. sechurae es a través de estudios de ocurrencia por lo que se planteó como objetivo determinar la tasa de ocurrencia de L. sechurae en este Sitio Ramsar, como base para monitoreo del impacto por explotación de hidrocarburos. Esta especie en la actualidad se encuentra categorizada según IUCN como “Casi Amenazada”. Se seleccionaron 20 puntos al azar sobre los que se colocó una estación olfativa o trampa de huella circular de 1 m2, cebada con 100 g de sardina en salsa de tomate. Se trabajó entre junio y julio de 2010 realizando siete visitas y la tasa de ocurrencia se calculó con el programa PRESENCE. La tasa de ocurrencia calculada considerando la probabilidad de detección constante (mejor modelo) resultó ser de 92% (IC 95% de 65% - 99%), con una probabilidad de detección de 60% (IC 95% de 48% - 70%). Se proyectó una abundancia de L. sechurae entre 18 y 23 individuos para el SRMSPV

Preparation of Nanocomposites of Poly(ε-caprolactone) and Multi-Walled Carbon Nanotubes by Ultrasound Micro-Molding. Influence of Nanotubes on Melting and Crystallization

Ultrasound micro-molding technology was successfully applied to prepare nanocomposites based on a poly(epsilon-caprolactone) (PCL) matrix and multi-walled carbon nanotubes (MWCNTs). Optimization of processing parameters (i.e., amplitude, force and time) was crucial to obtain nanocomposites without any evidence of degradation, high material saving and short processing time (7-8 s). Good dispersion of nanotubes was achieved after processing previously formed solvent casting films. This dispersion was even partially detected in pieces directly obtained from powder mixtures of both components. Incorporation of MWCNTs had a remarkable influence on melting and crystallization processes, which were systematically studied by time resolved synchrotron experiments. Results indicated higher melting and crystallization temperatures for the nanocomposite, with temperature differences higher than 5 degrees C. Carbon nanotubes were effective nucleating agents and had an influence on crystallinity, crystallization rate and even on lamellar morphology, which was evaluated by analysis of the correlation function of small angle diffraction profiles. Crystallinity within lamellar stacks was lower for the solvent casting nanocomposite, but in this case lamellae underwent a thickening process during heating that accounted for the increase in the melting temperature. Crystallization from the melt rendered similar lamellar morphologies at the end of the process due to a lamellar insertion mechanism.The authors acknowledge support from MINECO and FEDER (MAT2015-69547-R and MAT2015-69367-R), and the Generalitat de Catalunya (2014SGR188). Diffraction experiments were performed at NCD beamline at ALBA Synchrotron with the collaboration of ALBA staff

Screening of the supercritical impregnation of olea europaea leaves extract into filaments of thermoplastic polyurethane (TPU) and polylactic acid (PLA) intended for biomedical applications

The leaves of Olea europaea as agricultural waste represent a convenient source of antioxi-dants. In combination with supercritical CO2 (scCO2), assisted impregnation is an interesting strategy for the preparation of biomedical devices with specific bioactivity. For this purpose, 3D-printable filaments of thermoplastic polyurethane (TPU) and polylactic acid (PLA) were employed for the supercritical impregnation of ethanolic olive leaves extract (OLE) for biomedical application. The extraction of OLE was performed using pressurized liquids. The effect of pressure (100–400 bar), temperature (35–55 °C), and the polymer type on the OLE impregnation and the swelling degree were studied including a morphological analysis and the measurement of the final antioxidant ac-tivity. All the studied variables as well as their interactions showed significant effects on the OLE loading. Higher temperatures favored the OLE loading while the pressure presented opposite effects at values higher than 250 bar. Thus, the highest OLE loadings were achieved at 250 bar and 55 °C for both polymers. However, TPU showed c.a. 4 times higher OLE loading and antioxidant activity in comparison with PLA at the optimal conditions. To the best of our knowledge, this is the first report using TPU for the supercritical impregnation of a natural extract with bioactivity.Fil: Machado, Noelia Daiana. Universidad Nacional de Córdoba. Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Cejudo Bastante, Cristina. Universidad de Cadiz. Facultad de Ciencias; EspañaFil: Goñi, Maria Laura. Universidad Nacional de Córdoba. Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Gañan, Nicolas Alberto. Universidad Nacional de Córdoba. Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Casas Cardoso, Lourdes. Universidad de Cadiz. Facultad de Ciencias; EspañaFil: Mantell Serrano, Casimiro. Universidad de Cadiz. Facultad de Ciencias; Españ

Structural Modification of Polymers Functionalized with Mango Leaf Extract by Supercritical Impregnation: Approaching of Further Food and Biomedical Applications

Identifying new polymers from natural resources that can be effectively functionalized can have a substantial impact on biomedical devices and food preservation fields. Some of these polymers would be made of biodegradable, renewable and compostable materials, and present the kind of porosity required to effectively carry active compounds that confer on them the desired properties for their intended applications. Some natural extracts, such as mango leaf extract, have been proven to have high levels of antioxidant, antimicrobial or anti-inflammatory properties, making them good candidates for controlled-release applications. This work intends to investigate the supercritical impregnation of different types of polymers (ABS, PETG, TPU, PC and PCL) with mango leaf extract. The influence of temperature and pressure on the polymers' structure (swelling and foaming processes) and their different behaviors have been analyzed. Thus, TPU and PC experience minimal structural modifications, while PETG, PCL and ABS, on the other hand, suffer quite significant structural changes. TPU and PETG were selected as the representative polymers for each one of these behaviors to delve into mango leaf extract impregnation processes. The bioactive capacity of the extract is present in either impregnated polymer, with 25.7% antioxidant activity by TPU processed at 35 degrees C and 100 bar and 32.9% antioxidant activity by PETG impregnated at 75 degrees C and 400 ba