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Energy Efficiency Improvement of an Air Handling Unit at a Pharmaceutical Facility by Integration of an Economizer Cycle
(Polytechnic University of Puerto Rico, 2010)
This project presents the design of an economizer cycle for an existing Air Handling Unit (AHU) located at a pharmaceutical facility. At certain low temperatures, the integration of the economizer cycle will allow the AHU ...
Comparison of the Quality System Requirements of Code of Federal Regulations Part 820 and International Standard ISO 13485
(Polytechnic University of Puerto Rico, 2010)
This paper compares the quality system requirements of the Code of Federal Regulations 21 CFR part 820 with the quality system requirements of the International Standard ISO 13485. The medical devices industry that distributes ...
Experimental Design of a High Vacuum System for PUPR-MC Plasma Machine
(Polytechnic University of Puerto Rico, 2008)
In vacuum technology it is customary to divide a large pressure region (as of today, covering 16 orders of magnitude) into single, smaller regions. These divisions are somewhat arbitrary. Thus, the chemists frequently refer ...
Reduce Scrap Loss of a Pacemaker Lead Applying Lean-Six Sigma
(Polytechnic University of Puerto Rico, 2010)
A pacemaker is an electronic device that is placed under the skin to help control abnormal heart rhythms. It consists of a battery, a computerized generator, and lead (wires) with electrodes on one end. in a pacemaker leads ...
Faster Sample Delivery to the Microbiology Laboratory using Lean Six Sigma
(Polytechnic University of Puerto Rico, 2010)
This article presents the Lean Six Sigma tools used to identify the factors that impact the timely arrival of environmental water samples to a Microbiology Laboratory in a biotechnology industry. The inherent variations ...
El impacto del paradigma constructivista en la enseñanza de matemáticas
(Universidad Politécnica de Puerto Rico, 1999-12)
The constructivist paradigm offers important
implications to educators about the teaching and
learning of mathematics. The curricular reforms in the mathematics classroom, in its majority, emerge from constructivist ...
Tools for Predicting Uncertainty and confidence Intervals in Radiometric Data Products
(Universidad Politécnica de Puerto Rico, 1999-12)
Spaced-based observations of atmospheric
energetics, such as those provided by NASA’s
Clouds and the Earth’s Radiant Energy System
(CERES), produce data products intended to be
shared with the larger scientific community ...
Simulation of the Antenna Pattern of Arbitrarily Oriented Very Large Phase/Time-Delay Scanned Antenna Arrays with Systematic and Random Errors
(Universidad Politécnica de Puerto Rico, 1999-12)
A computer simulation to determine the field
pattern of arbitrarily oriented, very large phase/time delay scanned antennas was developed. The simulation takes into account errors present in antenna arrays. These are ...
Semisolid Metal Processing
(Universidad Politécnica de Puerto Rico, 1999-12)
Processing of metal alloys in their mushy state
represent a new trend in metal processing. The process produces components with low porosity,
high crack resistance, fine microstructure, and
better mechanical properties ...
Aplicación de sistemas de información geográfica en el análisis de la isla de calor urbana
(Universidad Politécnica de Puerto Rico, 1998-12)
An urban heat island has been described as the
difference in temperature between the city and its peripheral rural area. It is caused mainly by the growth of the city not taking into consideration the conditions previous ...