Final Report One-Twelfth-Scale Mixing Experiments to Characterize Double-Shell Tank Slurry Uniformity

The objectives of these 1/12-scale scoping experiments were to Determine which of the dimensionless parameters discussed in Bamberger and Liljegren (1994) affect the maximum concentration that can be suspended during jet mixer pump operation in the full-scale double-shell tanks Develop empirical correlations to predict the nozzle velocity required for jet mixer pumps to suspend the contents of full-scale double-shell tanks Apply the models to predict the nozzle velocity required to suspend the contents of Tank 241 AZ-101 Obtain experimental concentration data to compare with the TEMPEST( )(Trent and Eyler 1989) computational modeling predictions to guide further code development Analyze the effects of changing nozzle diameter on exit velocity (U0) and U0D0 (the product of the exit velocity and nozzle diameter) required to suspend the contents of a tank. The scoping study experimentally evaluated uniformity in a 1/12-scale experiment varying the Reynolds number, Froude number, and gravitational settling parameter space. The initial matrix specified only tests at 100% U0D0 and 25% U0D0. After initial tests were conducted with small diameter, low viscosity simulant this matrix was revised to allow evaluation of a broader range of U0D0s. The revised matrix included full factorial test between 100% and 50% U0D0 and two half-factorial tests at 75% and 25% U0D0. Adding points at 75% U0D0 and 50% U0D0 allowed evaluation curvature. Eliminating points at 25% U0D0 decreased the testing time by several weeks. Test conditions were achieved by varying the simulant viscosity, the mean particle size, and the jet nozzle exit velocity. Concentration measurements at sampling locations throughout the tank were used to assess the degree of uniformity achieved during each test. Concentration data was obtained using a real time ultrasonic attenuation probe and discrete batch samples. The undissolved solids concentration at these locations was analyzed to determine whether the tank contents were uniform ( ±10% variation about mean) in concentration. Concentration inhomogeneity was modeled as a function of dimensionless groups. The two parameters that best describe the maximum solids volume fraction that can be suspended in a double-shell tank were found to be 1) the Froude number (Fr) based on nozzle velocity (U0) and tank contents level (H) and 2) the dimensionless particle size (dp/D0). The dependence on the Reynolds number (Re) does not appear to be statistically significant

Análisis de viabilidad de la comercialización de Cepillos Ecológicos de bambú -BioSmile

El presente proyecto, está basado en la creación de la idea de negocio que tiene por nombre BioSmile, con el objetivo de ofrecer un producto ecológico e innovador.Los cepillos de dientes hechos a base de bambú serán un producto diferenciado dentro del mercado peruano, ya que buscamos promover un cuidado bucal y personal sostenible y eco amigable.El mercado objetivo son usuarios con estilo de vida moderna y acelerada entre los 18 y 55 años, pertenecientes a la generación X y a los llamados Millennials, del sector socioeconómico A y B y que están ubicados en las zonas de Lima moderna. Además, cuentan con una afinidad por productos con tendencia ecológica y de cuidado personal. Se considera que estos usuarios tienen la disposición para pagar el valor agregado que BioSmile ofrece.El plan de marketing se enfocará en los potenciales clientes de BioSmile a través de campañas y promociones, las cuales se harán en redes sociales y ferias ecológicas para tener ventas de manera mensual. De igual manera, se busca el posicionamiento de marca y que BioSmile pueda lograr sus objetivos propuestos.En el plan de operaciones, se establecieron diversos procesos y actividades clave que nos ayudarán con el correcto funcionamiento de BioSmile, También, se enfoca en cumplir con nuestros potenciales clientes y seguir manteniendo una buena relación con nuestros proveedores.En el plan financiero, la inversión inicial será de S/. 5 372.00, donde el 50% es aportado por los socios del proyecto y el 50% através de Crowdfunding para BioSmile.The present project is based on the creation of a business idea called BioSmile, with the aim of offering an ecological and innovative product. Bamboo based toothbrushes will be a differentiated product within the Peruvian market, as we seek to promote sustainable and eco-friendly oral and personal care.The target market is users with a modern and accelerated lifestyle between 18 and 55 years of age, belonging to “generation X” and the so-called “Millennials”, from the socio-economic sector A and B and located in the areas of modern Lima. In addition, they have an affinity for environmentally friendly and personal care products. These users are considered to be willing to pay for the added value that BioSmile offers.The marketing plan will focus on potential clients of BioSmile through campaigns and promotions, which will be made in social networks and ecological fairs to have sales on a monthly basis. Similarly, we seek to position the brand and to enable BioSmile to achieve its proposed objectives. In the operations plan, several key processes and activities were established that will help us with the proper functioning of BioSmile. Also, it focuses on meeting our potential customers and continuing to maintain a good relationship with our suppliersThe marketing plan will focus on potential clients of BioSmile through campaigns and promotions, which will be made in social networks and ecological fairs to have sales on a monthly basis. Similarly, we seek to position the brand and to enable BioSmile to achieve its proposed objectives. In the financial plan, the initial investment will be S/. 5372. 00, where 50% is contributed by the project partners and 50% through Crowdfunding for BioSmile.Trabajo de investigació

Gravity modulation and cross-diffusion effects on the onset of multicomponent convection.

A linear stability analysis is undertaken to investigate the effects of cross-diffusion and gravity modulation on the onset of convective instability in horizontally unbounded multiply diffusive fluid layers. We consider layers of incompressible Boussinesq fluid in which all thermophysical properties are constant except for the density insofar as it contributes to a buoyant force. It is assumed that the density is a linear function of the various components present and the fluxes are linear combinations of all the gradients of those components. We begin with a study of the effects of coupled molecular diffusion in a triply diffusive fluid layer under a constant gravity field. The bounding surfaces are perfectly conducting, perfectly permeable, and free of stresses. Stability is determined by way of temporal eigenvalues of a linear system of ODE's. We find that the off-diagonal elements of the diffusivity matrix may strongly affect the linear stability criteria, regardless of their relative value (as long as they do not vanish) as compared to the main-diagonal elements. We also investigate the combined effects of a sinusoidally varying gravity field and cross-diffusion in several doubly diffusive configurations. In particular, we consider: (1) stress-free and rigid boundaries with imposed gradients, and (2) stress-free and rigid boundaries when a solute gradient is induced by Soret separation. Stability is determined by way of Floquet multipliers of a linear system of ODE's with periodic coefficients. The topology of neutral curves and stability boundaries exhibits features not found in the modulated singly diffusive or unmodulated multiply diffusive fluid layers. In a gravity modulated doubly diffusive layer with cross-diffusion, when one Rayleigh number, say R₂, is fixed or induced, neutral curves spanned by the other Rayleigh number (R₁) and the horizontal wavenumber are in general multivalued. In addition, finite as well as semi-infinite R₁ stability ranges can be found. A notable feature is the occurrence of double minima, each one corresponding to a different asymptotically stable neutral response. A temporally and spatially quasi-periodic bifurcation from the basic state is possible when the Rayleigh numbers of the double extrema coincide. In this situation, there are two incommensurate critical wavenumbers at two incommensurate onset frequencies at the same Rayleigh number

Diseño de un sistema de gestión de la seguridad y salud en el trabajo para reducir riesgos en el área operativa de la empresa Intercore S.A.C. basada en la ISO 45001, Hualgayoc 2018

RESUMEN El presente trabajo plantea una propuesta de diseño y describe la metodología a seguir para implementar un sistema de gestión de seguridad y salud en el trabajo, en la empresa INTERCORE SAC, y que puede ser aplicada en empresas similares del sector minero. El diseño de un SGS&ST, se inicia con un diagnóstico inicial de la empresa para lo cual nos basamos en la lista de verificación de lineamientos del SGS&ST descrita en la Norma ISO 45001:2018, el resultado del diagnóstico nos sirve para plantear un SGS&ST adecuado a las necesidades de la empresa. Inicialmente se presenta los fundamentos teóricos, marco conceptual y legal, luego se muestran los materiales, métodos y técnicas de recopilación que se requieren para un diseño específico del proceso de implementación del SGS&ST. Finalmente se habla de los resultados, análisis y conclusiones, se empezó realizando un diagnóstico inicial del SGS&ST, a la parte operativa de la empresa a través del check list del ISO 45001: 2018, se obtuvo que 4.16% está listo, 16.66% está casi listo y 79.18% hay trabajo por hacer, luego se analizaron los riesgos a través de una matriz IPERC y se obtuvo que el riesgo físico representa el 65.22% de incidencia, el ambiental 13.05%, el ergonómico 8.69%, el químico 8.69% y el riesgo mecánico un 4.35%. Finalmente se realizó el diseño del SGS&ST basado en el ISO 45001:2018, que le permite a la empresa INTERCORE S.A.C. cumplir con los requerimientos que exige la norma al 100%. Asimismo, reducir el nivel de riesgo de medio a bajo en un 100% previniendo lesiones y deterioro de la Salud relacionados con el trabajo. Y, por último, desde el punto de vista económico es rentable ya que por cada S/ 1.00 invertido se genera un beneficio de S/0.42, evitando multas o sanciones y perdidas de horas de trabajo. PALABRAS CLAVE: Sistemas de gestión de la seguridad y salud en el trabajo, seguridad y salud en el trabajo, mejora continua, cultura de prevención.ABSTRACT The present work proposes a design proposal and describes the methodology to follow to implement a safety and health management system at work, in the company INTERCORE SAC, and that can be applied in similar companies of the mining sector. The design of an OH&SMS, begins with an initial diagnosis of the company for which we rely on the checklist of guidelines of the OH&SMS described in the ISO 45001: 2018, the result of the diagnosis serves to propose an OH&SMS appropriate to the needs of the company. Initially, the theoretical foundations, conceptual and legal framework are presented, then the materials, methods and collection techniques that are required for a specific design of the implementation process of the OH&SMS are shown. Finally we talk about the results, analysis and conclusions, we started making an initial diagnosis of OH&SMS, to the operational part of the company through the checklist of ISO 45001: 2018, it was obtained that 4.16% is ready, 16.66% is almost ready and 79.18% there is work to be done, then the risks were analyzed through an IPERC matrix and it was obtained that the physical risk represents the 65.22% incidence, the environmental 13.05%, the ergonomic 8.69%, the chemical 8.69% and the mechanical risk 4.35%. Finally, the design of the SGS & ST based on ISO 45001: 2018, which allows the company INTERCORE S.A.C. Comply with the requirements required by the standard at 100%. Likewise, reducing the level of risk from medium to low by 100% preventing injuries and deterioration of health related to work and finally from the economic point of view is profitable since for each S / 1.00 invested a benefit of S / 0.42, avoiding fines or penalties and lost working hours. KEYWORDS: Safety management systems and health at work, safety and health at work, continuous improvement, culture of prevention

Mechanics of Bubbles in Sludges and Slurries

The Hanford Site has 177 underground waste storage tanks that are known to retain and release bubbles composed of flammable gases. Characterizing and understanding the behavior of these bubbles is important for the safety issues associated with the flammable gases for both ongoing waste storage and future waste-retrieval operations. The retained bubbles are known to respond to small barometric pressure changes, though in a complex manner with unusual hysteresis occurring in some tanks in the relationship between bubble volume and pressure, or V-P hysteresis. With careful analysis, information on the volume of retained gas and the interactions of the waste and the bubbles can be determined. The overall objective of this study is to create a better understanding of the mechanics of bubbles retained in high-level waste sludges and slurries. Significant advancements have been made in all the major areas of basic theoretical and experimental method development

Ética en Psicología - PS28 201801

El curso de Ética en Psicología es un curso de especialidad en la carrera de Psicología, de carácter teórico, dirigido a los estudiantes de V ciclo. A través de su ejercicio profesional, el psicólogo contribuye al desarrollo de las capacidades de personas, grupos, organizaciones, comunidades y sociedad en general. En este sentido, la labor psicológica requiere del compromiso con el bienestar de las personas, la justicia y el cumplimiento de los derechos humanos. Por ello, en el curso se realiza una profunda reflexión y análisis de los fundamentos teóricos y normativos de la ética en el campo profesional de la psicología, a partir de los cuales los estudiantes resolverán casos y situaciones dilemáticas propias del ejercicio profesional. Asimismo, se discutirán y desarrollarán propuestas para contribuir, desde la psicología, al cumplimiento de derechos en la sociedad en general. El curso de Ética en Psicología ha sido diseñado para desarrollar las competencias que le permitan al estudiante un ejercicio profesional caracterizado por el razonamiento, el compromiso y el comportamiento moral, siguiendo los principios deontológicos de la carrera. Este curso contribuye directamente al desarrollo de las competencias generales de Pensamiento Crítico y Ciudadanía, ambas a un nivel 2. Asimismo, contribuye al desarrollo de la competencia específica de la carrera Fundamento teórico ¿conceptual, también a un nivel 2. Ética en Psicología tiene como prerrequisito al curso de Ética y Ciudadanía (HU136

Proposal for the redistribution of urban furniture in the pedestrian infrastructure of the Panamericana Sur bypass with Av. Primavera to improve accessibility for public transport users based on the Wayfinding model

De acuerdo a la problemática de la falta de accesibilidad para todos los usuarios que transitan por el bypass de la av. Primavera con la Panamericana Sur se buscó una propuesta que abarque la solución a su problema y le permita realizar sus viajes peatonales sin dificultades y/o barreras para todo tipo de usuario. Según investigaciones pasadas aplicadas en países como España, Alemania y México, este problema es recurrente ya que se diseña bienes, productos y/o servicios sin pensar en todas las capacidades que puedan presentar los usuarios. A partir de ellos, se realizó estudios de campo donde se vieron las principales deficiencias de las zonas del bypass donde transitan los peatones, y en estas zonas de realizó en conteo de un aforo peatonal en conjunto con una encuesta de nivel de satisfacción. Después de ello, se procedió a pasar los datos al software sketchup para realizar un cambio de mobiliario y aprovechar las zonas no utilizadas del bypass para brindar mejor comodidad al usuario y espacio para movilizarse sin dificultad. Luego, se aplicó la metodología wayfinding complementar la propuesta con una orientación para peatón hacia su destino y con ello, según el HCM 2010 se revisó el nivel de servicio actual y el de la propuesta, obteniendo una mejora para los caminos por donde se trasladarán los peatonesAccording to the problem of lack of accessibility for all users passing through the av. Spring with the Panamericana Sur. A proposal was sought that covers the solution to your problem and allows you to make your pedestrian trips without difficulties and / or barriers for all types of users. According to past research applied in countries such as Spain, Germany and Mexico, this problem is recurrent since goods, products and / or services are designed without thinking about all the capabilities that users may present. From them, field studies were carried out where the main deficiencies of the bypass areas where pedestrians pass were seen and from them, a pedestrian capacity was counted in these areas in conjunction with a satisfaction survey. After that, the data was transferred to the sketchup software to make a change of furniture and take advantage of the unused areas of the bypass to provide better comfort to the user and space to move without difficulty. Then, the wayfinding methodology was applied, complementing the proposal with an orientation for pedestrians towards their destination and with this, according to the HCM 2010 the current service level and that of the proposal were revised, obtaining an improvement for the roads where the vehicles will be transferred. pedestriansTesi