Browsing Theses & Dissertations by Title
Now showing items 2559-2578 of 4032
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Microbial diversity of a fluidized-bed bioreactor treating diesel-contaminated groundwater (Vega Baja, Puerto Rico)
(2006)Culture and culture-independent techniques were used to characterize the microbial community structure within a fluidized bed reactor (FBR) used to remediate a dieselcontaminated aquifer. Under normal operating conditions, ... -
Microbial diversity of halotolerant and halophilic endophytes from the mangrove Avicennia germinans located at the solar salterns of Cabo Rojo, Puerto Rico
(2018-12-02)The relationship between plants and their environment has been described as a continuum, in which changes of a variable may have an effect on another. Ecological shifts in temperature, humidity, and soil chemistry can alter ... -
Microcontroller design and concepts
(2004)A method for microcontroller design was developed. A basic data path configuration capable of processing the microcontroller basic instruction set was developed first. Based on this configuration, a four-bit microcontroller ... -
A microelectronic fluorescence sensing system for rapid detection of Enterococcus faecalis using gradient detection IC and on-chip photodiodes
(2020-12-11)This work presents the design of a custom microelectronic fluorescence sensing system for rapid detection of Enterococcus faecalis, enterococcus, or total coliform bacteria using commercially available EPA-approved ... -
Microflora asociada a diferentes especies de yautía (Xanthosoma SPP.) y la identificación de medidas a nivel poscosecha para minimizar el daño en cormos y cormelos
(2017)Tanier (Xanthosoma spp.) has a great economic importance worldwide, but its production is lower than its demand. In Puerto Rico diseases caused via plant pathogenic bacteria and fungi are limiting tanier production creating ... -
Microorganismos indicadores de contaminación fecal en la escorrentía de un suelo enmendado con estiércol vacuno
(2013)Dairy manure application to agricultural soils is a common disposal method of the material that will provide nutrients and organic carbon to the soils, but at the same time adds fecal indicator bacteria (FIB). The effects ... -
Microorganismos presentes en la pared del tubo digestivo de Onychochaeta borincana (Oligochaeta: Glossoscolecidae)
(2005)Scanning electron microscopy was used to detect the presence of microorganisms on the internal intestinal surface of Onychochaeta borincana. The intestines of fourteen adult specimens were extracted, washed, and prepared ... -
Microstructure and rheology of Janus particle suspensions
(2019-05-15)The aggregate sizes and morphologies formed with colloidal particles have important consequences on the rheological behavior of colloidal suspensions. Self- and directed-assembly are the most used phenomena to produce ... -
Microzonación del periodo fundamental de vibración del terreno y edificios del Recinto Universitario de Mayagüez de la Universidad de Puerto Rico
(2014)The Nakamura’s technique is as an excellent alternative in urban environment for estimating site fundamental period compared to traditional methods such as invasive methods (SPT test), where we need to know in advance ... -
Middle holocene SST record (6,200 +/- 80 to 4,760 +/- 90 yr B.P.) based on corals from Cañada Honda, Dominican Republic
(2018-05)It is important to understand climate change in the past, present, and future. The Holocene was initially considered to have a relative stable climate, however, significant climate variations have been observed in several ... -
Middle Holocene SST record (7,518±46 to 5,944±28 ybp) based on corals from the Enriquillo Valley, Dominican Republic
(2018-06-01)Corals are important paleo-climatological tools because as they accrete their aragonite skeletons they also store a record of fluctuations in the chemical and physical conditions that existed in the sea water surrounding ... -
A mimo modeling framework using a software defined radio paradigm
(2012)This thesis presents the theory, design, and implementation of a computational framework for modeling MIMO (Multiple Input Multiple Output) systems and simulate them under the Software Defined Radio paradigm. Likewise, it ... -
Mineralización de nitrógeno en suelos bajo agrosistemas de producción de café (Coffea arabica L.) en Puerto Rico
(2008)The contribution of annual litter and the nitrogen mineralization rates (NMIN) in the field and in the laboratory were quantified. Three ecosystems were evaluated: 1) unshaded coffee (CSL); 2) shaded coffee (CSM), and 3) ... -
Miniature magnetic field generators for magnetic fluid hyperthermia applications
(2017-05)Magnetic fluid hyperthermia (MFH) is a non-invasive cancer treatment in which magnetic nanoparticles are administered to cancerous tissues. This raises the temperature of the affected region above a certain threshold ... -
Minimización de los costos totales en el problema de balanceo de línea con ciclo variable y estaciones en paralelo
(2005)The production line balancing problem, focused on minimizing the total per-unit cost, allows effective communication with management which facilitates the implementation of required changes. This research was based on ... -
Minimizando la brecha digital en Puerto Rico: una mirada a las buenas prácticas latinoamericanas
(2021-05-14)Este trabajo intenta consultar las buenas prácticas llevadas a cabo por los países de Colombia, Costa Rica, Cuba, Chile y Uruguay en Latinoamérica para minimizar o disminuir la brecha digital mediante la inclusión de las ... -
Minimizing end stress in bridge stay cables
(2010)The construction of cable stayed bridges has grown substantially in the last couple of decades, leading to increased concerns about their life and health. One of the main concerns of cable stayed bridge design is the high ...