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Mostrando ítems 186-205 de 823
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Cytotoxic efect of polyvinyl alcohol‑magnetite composite
(2023-08-31)Polymeric hydrogel is a promising candidate for drug delivery applications due to its ability to encapsulate and release drugs. Incorporating magnetic particles enables controlled and specifc release, providing sustained ... -
Damage assessment using modeling of large-scale confined masonry building
(2018-12-12)The seismic behavior of a representative medium-rise building of Mexico City is evaluated using the capacity spectrum method. This method is widely used in the seismic assessment of buildings because it allows obtaining ... -
Deep transfer learning for the recognition of types of face masks as a core measure to prevent the transmission of COVID-19
(2022-06-23)The use of face masks in public places has emerged as one of the most effective non-pharmaceutical measures to lower the spread of COVID-19 infection. This has led to the development of several detection systems for ... -
Degradation modeling based on gamma process models with random effects
(2018-04-01)The random effects in a gamma process are introduced in terms of its scale parameter. However, the scale parameter affects both its mean and variance. Hence, the variation of the degradation rates and the within degradation ... -
Degradation modeling based on the gamma process with random initial degradation level and random threshold
(2023-01-08)The stochastic modeling of performance characteristics is an important approach for the quality assessment of products. As part of the stochastic modeling, it is possible to consider different variation sources such as ... -
Degradation modeling of 2 fatigue-crack growth characteristics based on inverse Gaussian processes: A case study
(2019-05-30)Most modern products that are highly reliable are complex in their inner and outer structures. This situation indicates quality characterization by the interaction of multiple performance characteristics, which motivates ... -
Derivadas de eigenvalores y eigenvectores en un sistema discreto
(2021-03-04)A direct procedure for obtaining the derivatives of the eigenvalues and eigenvectors is implemented in two degrees of freedom system. A sensitivity analysis of the first eigen value and the first eigenvector elements is ... -
DESARROLLO DE UN GIROSCOPIO DIGITAL INALÁMBRICO CON UN SENSOR TMR Y UN CIRCUITO DE INTERFAZ DIRECTA
(2023-06-28)La medición de la posición angular con precisión y exactitud es de gran importancia en sistemas portables, donde normalmente se utilizan sensores de aceleración y vibración. La conexión entre el sensor y el microcontrolador ... -
Desarrollo De Una Estación De Prueba Para Celdas De Litio 18650 Utilizando Arduino Y Labview
(2021-12-27)Este trabajo se centra en el estudio de la degradación de la capacidad de las celdas de litio 18650, principalmente en la prueba para determinar la capacidad restante en celdas usadas, obteniendo como parámetro principal ... -
Desarrollo de una interfaz gráfica para identificar imágenes metalográficas de piezas de aluminio A356
(2021-08-13)En este trabajo se presenta el desarrollo de una interfaz gráfica con la capacidad de procesar una imagen metalográfica y separar los pixeles de acuerdo con el código de color RGB. Esta interfaz permite la identificación ... -
Desarrollo de una red IOT basada en tecnología Lorawan para seguimiento de vehiculos
(2021-06-16)Resumen: En la presente investigación se propone el desarrollo de una alternativa que sea más económica y de fácil adquisición para la localización de los vehículos en el estado de Chihuahua, así mismo se realiza la ... -
Design and Comparative Analysis of Several Types of Fixed and Simple Precision Floating Point Multipliers
(2021-04-30)Multiplication is an arithmetic operation that has a meaningful impact on the performance of sev- eral real-life applications, such as digital signal and image processing. Analysis and comparison of different types of ... -
Design and construction of a compact low-cost test bench for hybrid engine studies
(2022-03-31)In this paper, the design, construction and first results of a low-cost hybrid engine test bench is presented. The purpose of this device is to allow geographically specific research around control algorithms and ... -
Design and Construction of a Compact Rotary Substrate Heater for Deposition Systems
(2020-03-24)We have designed and constructed a compact rotary substrate heater for the temperature range of 25 °C to 700 °C. The heater can be implemented in any deposition system where crystalline samples are needed. Its main function ... -
Design and construction of a desktop AC susceptometer using an Arduino and a Bluetooth for serial interface
(2018-03-26)We designed and developed a desktop AC susceptometer for the characterization of materials. The system consists of a lock-in amplifier, an AC function generator, a couple of coils, a sample holder, a computer system with ... -
Design and Development of a MOEMS Accelerometer Using SOI Technology
(2023-01-16)The micro-electromechanical system (MEMS) sensors are suitable devices for vibrational analysis in complex systems. The Fabry–Pérot interferometer (FPI) is used due to its high sensitivity and immunity to electromagnetic ... -
Design and fabrication of a bioreactor for the proliferation of mesenchymal stem cells
(2023-04-30)Actualmente, la cantidad de donadores de órganos es escasa y existen diferentes métodos para enfrentar esta situación, entre ellos los cultivos celulares, la descelularización y los biorreactores, que juegan un rol importante ... -
Design and fabrication of a cryogenic magnetocaloric composite by spark plasma sintering based on the RAl2 Laves phases (R= Ho, Er)
(2020-08-05)We report the design and fabrication of a highly dense (>97%) two-phase magnetocaloric composite operating in the cryogenic temperature range based on the binary Laves phases HoAl2 and ErAl2 with a nearly table-like magnetic ... -
Design and validation of a questionnaire in Spanish language for software usability evaluation
(2019-10)BACKGROUND:Usability is an essential characteristic of software development, which needs to be evaluated mainly through questionnaires. However, the questionnaires available in Spanish are limited and not available for ...