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Mostrando ítems 61-80 de 2189

    • Retículos cúbicos, ortomodulares, conexos, de altura 3 y configuraciones proyectivas ortomodulares conexas 

      Sarmiento, Jorge (Polytechnic University of Puerto Rico, 1994-12)
      Cubic orthomodular connected lattices of height 3 and orthomodular connected projective configurations The construction of a connected orthomodular projective configuration, from a cubic, connected, orthomodular lattice ...

    • Análisis del sistema de protección de IPR Pharmaceuticals, Inc 

      Flores Nieves, Ramon H.; Pérez Dumeng, Luis A. (Polytechnic University of Puerto Rico, 1994-12)
      Analysis of the electrical protection system of IPR Pharmaceuticals This study is based on the electrical distribution system of a pharmaceutical plant. The purpose of the study is to investigate why the low voltage ...

    • Diseño y desarrollo de un controlador de temperatura para un horno de pruebas 

      Nieves, Carlos A. (Polytechnic University of Puerto Rico, 1994-12)
      Design and development of a temperature controller for a test oven As a part of quality control process, the electronics industry must make different tests to electronic components. One of these tests allows us to determine ...

    • Control por "feedback" y "feedforward" aplicado a un proceso de múltiples entradas 

      García Cabrera, Luis I. (Polytechnic University of Puerto Rico, 1994-12)
      Feedback and feedforward control applied to a multivariable process In this paper we analyze three control systems for a multivariable chemical process. We also present the design of a feedback control system, a feedforward ...

    • Programa emulador de entrenador para los microprocesadores INTEL 8080 y 8085 para las calculadoras programables HP-48SX y HP-48GX 

      Zapata Cancel, Luis A (Polytechnic University of Puerto Rico, 1994-12)
      Emulator of a trainer for the Intel microprocessor 8080 and 8085 for the programmable calculator HP-48SX and HP-48GX This article presents the development of a program to emulate the Intel 8080 and 8085 microprocessors. ...

    • Design of an experiment for injection blow molding 

      Moreno Abadía, Elver; Rivera Ruibal, Pilar (Polytechnic University of Puerto Rico, 1994-12)
      This research was requested by the quality control engineer of a company manufacturing plastics products such as bottles and caps. These products are manufactured with polyethylene and polipropylene resin, using two molding ...

    • Identifying damage in reciprocating air compressors 

      González, Cándido; Monroig, Julio H. (Polytechnic University of Puerto Rico, 1994-12)
      We used a parametric analysis for a reciprocating air compressor to determine its working conditions. We also connected measuring devises which allowed us to determine the real performance of our compressor. From this point ...

    • El Politécnico (Año 1, Número 2, Febrero 1995)  

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1995-02)
      Periódico El Politécnico (Año 1, Número 2, Febrero 1995) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.

    • El Politécnico (Año 1, Número 3, Mayo 1995)  

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1995-05)
      Periódico El Politécnico (Año 1, Número 3, Mayo 1995) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.

    • Simulación de fallas en sistemas de potencia usando componentes simétricos y el programa PSPICE 

      García Correa, Horacio A.; Rivera Velázquez, Vicente (Polytechnic University of Puerto Rico, 1995-06)
      Fault simulation in power systems using symetric components and the computer program PSPICE This article shows how to use the computer program PSPICE to analyze faults in power systems by the symmetrical components method. ...

    • Cálculo de los coeficientes de la ecuación de pérdidas para un sistema de generación de potencia 

      Ruiz, Fernando; Santos, José A. (Polytechnic University of Puerto Rico, 1995-06)
      Calculation of the loss equation coefficients (Bmn) for a power generation system Engineering has been very successful in the analysis of fuel costs, performance and efficiency of boilers, turbines, and generators. However, ...

    • Programa para construir la matriz representativa de un sistema de potencia eléctrica 

      Santiago Quiles, Víctor E.; Velázquez Vázquez, Luis (Polytechnic University of Puerto Rico, 1995-06)
      Computer program to build and modify an electrical power system matrix A power systems engineer has to build and modify the electrical power system matrix every time elements of the system are added, deleted or modified. ...

    • The development of my capstone design project 

      Benero García, Héctor Rafael (Polytechnic University of Puerto Rico, 1995-06)
      This article is the result of my Capstone Design Project, which I started during the summer of 1994. The main purpose of this course is to expose us to the ever changing and challenging world of the engineering design work. ...

    • Programa de computadora para diseñar mallas puestas a tierra en las subestaciones de potencia 

      Ramírez Zeno, Pedro I.; Sierra, José L. (Polytechnic University of Puerto Rico, 1995-06)
      Computer program to design grounding grids for power subtations As of today, the Puerto Rico Electric Power Authority (PREP A) does not have a modem computer program based on the latest technology to design and analyze ...

    • El Politécnico (Año 1, Número 4, Agosto 1995)  

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1995-08)
      Periódico El Politécnico (Año 1, Número 4, Agosto 1995) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.

    • El Politécnico (Año 1, Número 5, Noviembre 1995)  

      Universidad Politécnica de Puerto Rico. Oficina de Mercadeo y Comunicaciones. (Polytechnic University of Puerto Rico, 1995-11)
      Periódico El Politécnico (Año 1, Número 5, Noviembre 1995) órgano oficial de la Universidad Politécnica de Puerto Rico, se publica con una periodicidad trimestral.

    • Electrical distribution system for the Cantera Península Community (Santa Elena and Condadito Final sectors) 

      Bernard, Félix; León, Carlos; Lizardi, Franz; Ortiz, José A.; Santiago, José O. (Polytechnic University of Puerto Rico, 1995-12)
      The primary objective of this project is improving the quality of life of the Peninsula de Cantera residents. Our collaboration in this improvement deals with infrastructure, specifically with the electric power service. ...

    • Diseño de un motor sincrónico y su sistema de protección 

      Del Río Mora, Ángel (Polytechnic University of Puerto Rico, 1995-12)
      Design of a synchronous motor and its protection system The design of a synchronous motor is not a common task in the practice of electrical engineering because this type of machine is widely available for mechanical ...

    • Subscriber line automatic identification number device 

      Lozada, Roberto; Sánchez, Pedro A. (Polytechnic University of Puerto Rico, 1995-12)
      The subscriber line automatic identification number device, SLAIN device, is an apparatus that may be utilized as the subscriber's end section of a telephone privatization system. This system will not utilize any equipment ...

    • Diseño de un experimento para una máquina de embotellado 

      Muñoz Cabán, Carmen; Vázquez Soto, Guillermo A. (Polytechnic University of Puerto Rico, 1995-12)
      Experimental design for a bottling proccess machine In this article we present an experimental design for a bottling process machine of the dry products plant of a local pharmaceutical industry. Our goal is to identify ...