Now showing items 247-266 of 276

    • Temperature Mapping at a Pharmaceutical Product Warehouse 

      González Reyes, Elvin Xavier (Polytechnic University of Puerto Rico, 2019)
      To sustain pharmaceuticals products with high quality until they arrive to the patients, it is necessary to store them under specified temperature conditions. Warehouses that store these kinds of products use temperature ...
    • Terra Incognita: el espacio público en Río Piedras 

      Sánchez Febres, Ricardo J. F. (Polytechnic University of Puerto Rico, 2015)
      Históricamente, la mayoría de las épocas han articulado cambios o movimientos orientados a la revitalización o expansión cultural- social-económica y política de sus ciudades. Estos cambios los vemos claramente ...
    • Theory of constraints will really improve your competitiveness 

      Cruz, Rafael (Polytechnic University of Puerto Rico, 1993-06)
      The Theory of Constraints (TOC) is a new management philosophy created by Eliyahu M. Goldratt to help an enterprise reach its goal. To accomplish this objective a company must change the paradigm of costs and follow two ...
    • Theory of constraints will really improve your competitiveness 

      Cruz, Rafael (Polytechnic University of Puerto Rico, 1992-12)
      The Theory of Constraints (TOC) is a new management philosophy created by Eliyahu M. Goldratt to help an enterprise reach its goal. In order to accomplish this objective a company must change the paradigm of costs an follow ...
    • Theory of operation of today CD systems 

      García, Rafael; Trabanco, Benjamin R. (Polytechnic University of Puerto Rico, 1993-12)
      In this article we examine the main events that lead to the invention of the compact disc or CD, as we all call it. We consider the most important components of the playback section of the CD such as the pick-up circuit, ...
    • Time Confinement Simulation of a Charged Particle in a Mirror Magnetic Field 

      Ávila O’Neill, Sara R. (Polytechnic University of Puerto Rico, 2016)
      Plasma is a state of matter formed of electrically charged particles. Those particles are greatly influenced by electromagnetic interactions, which have been abundantly studied since the 19 century. The Lorentz equation ...
    • Time Optimization of Gas Chromatography-Mass Spectrometry Method for Controlled Substances Analysis 

      Espada Colón, Cindy Ann (Polytechnic University of Puerto Rico, 2016)
      An optimization of the gas chromatography- mass spectrometry (GC-MS) method was conducted by establishing a temperature ramp of 150°C, held by 3 min and raising at 12°C/min until reaching 300°C, which from 25.00 min ...
    • Tip Optimization for Near-Field Scanning Optical Microscopy by Laser-Heated Pulling 

      Casper Ortiz, William (Polytechnic University of Puerto Rico, 2005)
      The ability to manufacture reproducible and low-cost probe tips is critical for the improvement of near-field scanning optical microscopy as both the resolution and efficiency of the apparatus depend on the tip's geometrical ...
    • Total Productive Maintenance (TPM) to Improve Laboratory Performance 

      Rosario López, Ayechia M. (Polytechnic University of Puerto Rico, 2022)
      Total Productive Maintenance is a methodology focused on the improvement of equipment performance. Is a concept mainly employed in the manufacturing operations in which the equipment performance is constantly monitored to ...
    • Trastorno generalizado del desarrollo o autismo atípico (TGDAA): Implicaciones en el aprendizaje 

      Forcino Rubero, Ernesto (Polytechnic University of Puerto Rico, 2019)
      Artículo sobre el autismo en el área de la pedagogía.
    • Trigésimo Aniversario 

      Vélez Delgado, Gilberto A. (Polytechnic University of Puerto Rico, 1996-12)
      La Universidad Politécnica de Puerto Rico (UPPR) cumple 30 años. Nació en 1966 cuando comenzó a ofrecer cursos técnicos conduncentes a un bachillerato en agrimensura y cartografía.
    • Tunomás Honey de Jim Sagel: reapropiación y preservación cultural del mundo chicano 

      Dessús Colón, Virginia (Polytechnic University of Puerto Rico, 2004)
      Tunomás Honey written by New Mexican writer Jim Sagel serves the purpose of analyzing the theme of reappropriation and cultural reservation of the Chicano world through literature. In 1981 Tunonás Honey received the award ...
    • Un universo de radiación 

      Iriarte, Modesto (Polytechnic University of Puerto Rico, 1998-06)
      During the last two decades there has been an increase in the worrines of the people regarding the proliferation of electromagnetic fields and their effects on the human body. In this article we explain the basic principles ...
    • Una invitación a Liturgia del atardecer 

      Sánchez, Efraín (Polytechnic University of Puerto Rico, 2019)
      Reseña del libro Liturgia del Atardecer del poeta y catedrático Fernando Operé.
    • The Use of Deep Soil Mixing as Channel Slope Stabilization Method—US Army Corps of Engineers Bechara Middle Section Project Case Study 

      Martínez Rodríguez, Francisco J. (Polytechnic University of Puerto Rico, 2019)
      This project describes and validates the design of a slope stabilization technique for the Bechara Middle Section (BMS) channel located in the Bechara Industrial Area, San Juan, Puerto Rico. The BMS project consisted of ...
    • Use of genetic algorithms in experimental design optimization and thermal property estimation 

      García, Sandrine (Polytechnic University of Puerto Rico, 1997-06)
      The goal of this paper is both to introduce the fields of experimental design optimization and thermal property estimation and to present Genetic Algorithm (GA) optimization method to the faculty of PUPR. This research ...
    • The Use of Vibration to Neutralize the Parkinson Disease Hand Tremor 

      Berríos Santiago, Eloy A. (Polytechnic University of Puerto Rico, 2019)
      Today there are some treatments available for the Parkinson Disease. Even though there is no standard treatment for the disease, because it's progressive and has no cure, there are some technologies that help the patients ...
    • Using Lean Six Sigma Tools for Packaging Machine Rebuild and Automation Process Improvement 

      Gandiaga Cabrera, Juan Carlos (Polytechnic University of Puerto Rico, 2015)
      This document describes the process of improving an existing packaging machine using lean six sigma tools and automation technology for the medical device industry. The ideal manufacturing site that has volume increase ...
    • A utility for Netware: REMOTE 

      García, Steven; Quintero, Jorge L. (Polytechnic University of Puerto Rico, 1994-06)
      We used the C language code to develop a utility that allows two or more workstations connected to the same physical network running the network operating system Netware to communicate and perform remote operations. The ...
    • Utilización de los sistemas de planificación de requerimiento de materiales en la Industria farmaceútica de Puerto Rico 

      Olivencia, Oscar; Da Silva, Hugo E. (Polytechnic University of Puerto Rico, 1991-06)
      Este escrito presenta los resultados de una investigación sobre la industria farmacéutica en Puerto Rico. El objetivo principal de esta investigación fue el determinar a que capacidad se estan utilizando los sistemas de ...