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waste function » based function (Expander búsqueda), basic function (Expander búsqueda), cost function (Expander búsqueda)
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1
artículo
Publicado 2023
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This research used tomato waste as a substrate (fuel) in Single Chamber-Microbial Fuel Cells (scMFC) on a small scale. The electrochemical properties were monitored, the functional groups of the substrate were analyzed by Fourier Transform Infrared Spectrophotometry (FTIR) and a microbiological analysis was performed on the electrodes in order to identify the microorganisms responsible for the electrochemical process. The results show voltage peaks and an electrical current of 3.647 ± 0.157 mA and 0.957 ± 0.246 V. A pH of 5.32 ± 0.26 was measured in the substrate with an electrical current conductivity of 148,701 ± 5849 mS/cm and an internal resistance (Rint) of 77. 517 ± 8.541 Ω. The maximum power density (PD) displayed was 264.72 ± 3.54 mW/cm2 at a current density (CD) of 4.388 A/cm2. On the other hand, the FTIR spectrum showed a more intense decrease in its peaks, with the comp...
2
artículo
Publicado 2023
Enlace
Enlace
This research used tomato waste as a substrate (fuel) in Single Chamber-Microbial Fuel Cells (scMFC) on a small scale. The electrochemical properties were monitored, the functional groups of the substrate were analyzed by Fourier Transform Infrared Spectrophotometry (FTIR) and a microbiological analysis was performed on the electrodes in order to identify the microorganisms responsible for the electrochemical process. The results show voltage peaks and an electrical current of 3.647 ± 0.157 mA and 0.957 ± 0.246 V. A pH of 5.32 ± 0.26 was measured in the substrate with an electrical current conductivity of 148,701 ± 5849 mS/cm and an internal resistance (Rint) of 77. 517 ± 8.541 Ω. The maximum power density (PD) displayed was 264.72 ± 3.54 mW/cm2 at a current density (CD) of 4.388 A/cm2. On the other hand, the FTIR spectrum showed a more intense decrease in its peaks, with the comp...
3
artículo
Publicado 2023
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“This research used tomato waste as a substrate (fuel) in Single Chamber-Microbial Fuel Cells (scMFC) on a small scale. The electrochemical properties were monitored, the functional groups of the substrate were analyzed by Fourier Transform Infrared Spectrophotometry (FTIR) and a microbiological analysis was performed on the electrodes in order to identify the microorganisms responsible for the electrochemical process. The results show voltage peaks and an electrical current of 3.647 ± 0.157 mA and 0.957 ± 0.246 V. A pH of 5.32 ± 0.26 was measured in the substrate with an electrical current conductivity of 148,701 ± 5849 mS/cm and an internal resistance (Rint) of 77. 517 ± 8.541 Ω. The maximum power density (PD) displayed was 264.72 ± 3.54 mW/cm2 at a current density (CD) of 4.388 A/cm2 . On the other hand, the FTIR spectrum showed a more intense decrease in its peaks, with the ...
4
artículo
Publicado 2023
Enlace
Enlace
his research used tomato waste as a substrate (fuel) in Single Chamber-Microbial Fuel Cells (scMFC) on a small scale. The electrochemical properties were monitored, the functional groups of the substrate were analyzed by Fourier Transform Infrared Spectrophotometry (FTIR) and a microbiological analysis was performed on the electrodes in order to identify the microorganisms responsible for the electrochemical process. The results show voltage peaks and an electrical current of 3.647 ± 0.157 mA and 0.957 ± 0.246 V. A pH of 5.32 ± 0.26 was measured in the substrate with an electrical current conductivity of 148,701 ± 5849 mS/cm and an internal resistance (Rint) of 77. 517 ± 8.541 Ω. The maximum power density (PD) displayed was 264.72 ± 3.54 mW/cm2 at a current density (CD) of 4.388 A/cm2. On the other hand, the FTIR spectrum showed a more intense decrease in its peaks, with the compo...
5
artículo
Publicado 2021
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COVID-19 is a disease caused by SARS-CoV-2, a virus that represents a serious threat to global health. The objective of the article is to deepen into the structure of the structural and non-structural proteins of SARS-CoV-2 and their role during the infection of its target cells; also to propose molecules from in silico studies that inhibit proteins of the viral cycle for potential pharmacological treatments. The SARS-CoV-2 genome has ORFs that encode sixteen non-structural proteins (Nsp1-16), four structural proteins (Spike, Envelope, Membrane, and Nucleocapsid), and nine accessory proteins; that fulfill various functions in the entry of the virus and its viral cycle. In silico studies of drugs such as disulfiram and viomycin, and molecules found in plants as Azadirachta indica, the tea plant, and Andrographis paniculata have shown inhibitory effects on the SARS-CoV-2 viral cycle.
6
tesis de maestría
This master thesis is devoted to the state estimation of a particular form of PDE systems, coupled parabolic PDEs with spatial dependent coefficients. This form of PDEs represent some dynamic systems such as Tubular Reactors, Diffusion in lithium-ion cells and Diffusive Gradient in Thin Films sensor. Other methods for this problem use "Backstepping" observers, in which the estimation error system is transformed into another system that is stable, reducing the problem to calculate the Kernel functions making the transformation possible. In some cases this calculation is not simple, also the simulation in real time of the observer system, that is also a PDE, can be difficult. The method presented in this thesis uses the properties of the so-called Modulating Functions in order to estimate the states. The procedure con- sists of generating an orthonormal basis of functions that can represen...
7
tesis de maestría
This master thesis is devoted to the state estimation of a particular form of PDE systems, coupled parabolic PDEs with spatial dependent coefficients. This form of PDEs represent some dynamic systems such as Tubular Reactors, Diffusion in lithium-ion cells and Diffusive Gradient in Thin Films sensor. Other methods for this problem use "Backstepping" observers, in which the estimation error system is transformed into another system that is stable, reducing the problem to calculate the Kernel functions making the transformation possible. In some cases this calculation is not simple, also the simulation in real time of the observer system, that is also a PDE, can be difficult. The method presented in this thesis uses the properties of the so-called Modulating Functions in order to estimate the states. The procedure con- sists of generating an orthonormal basis of functions that can represen...
8
tesis doctoral
Publicado 2020
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Enlace
Descargue el texto completo en el repositorio institucional de la Universidade Estadual de Campinas: https://hdl.handle.net/20.500.12733/1641647
9
artículo
Publicado 2021
Enlace
Enlace
COVID-19 is a disease caused by SARS-CoV-2, a virus that represents a serious threat to global health. The objective of the article is to deepen into the structure of the structural and non-structural proteins of SARS-CoV-2 and their role during the infection of its target cells; also to propose molecules from in silico studies that inhibit proteins of the viral cycle for potential pharmacological treatments. The SARS-CoV-2 genome has ORFs that encode sixteen non-structural proteins (Nsp1-16), four structural proteins (Spike, Envelope, Membrane, and Nucleocapsid), and nine accessory proteins; that fulfill various functions in the entry of the virus and its viral cycle. In silico studies of drugs such as disulfiram and viomycin, and molecules found in plants as Azadirachta indica, the tea plant, and Andrographis paniculata have shown inhibitory effects on the SARS-CoV-2 viral cycle.
10
El objetivo de este trabajo de investigación fue el sistema endocrino es un conjunto de órganos que se encargan de la secreción de hormonas que ayudan al organismo a realizar sus actividades metabólicas adecuadamente y mantener al cuerpo en homeostasis, estas hormonas son sustancias químicas orgánicas que viajan al torrente sanguíneo en pequeñas cantidades adhiriéndose a sus receptores, llamadas células blanco. Las hormonas se clasifican según la distancia respecto al sitio de su producción en hormonas endocrinas, hormonas que pasan al torrente sanguíneo recorriendo largas distancias y hormonas locales que pueden ser hormonas que se acoplan a sus recibidores en la propia célula que lo produce (autocrina), u hormonas que viajan a cortas distancias o lugares adyacentes (paracrinas). También se puede clasificar según su química en hormonas liposolubles, que serán de fácil...
11
artículo
Publicado 2022
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El Norte del ecosistema de la Corriente de Humboldt, localizado a lo largo del Sudeste del Océano Pacífico, frente a Perú, es considerado uno de los más productivos sistemas naturales en el mundo, siendo de gran relevancia el estudio del fitoplancton como base de la trama trófica marina. Tomando en cuenta las relaciones entre la superficie celular, biovolumen y máxima dimensión lineal de las células de las especies del fitoplancton, se encontraron 140 especies en el grupo funcional ‘R‘ (especies ruderales, adaptables a condiciones altas de mezcla); 133 especies en el grupo funcional ‘S’ (especies Stress-tolerantes, predominantes en condiciones oligotróficas y de alta luz) y 19 en el grupo funcional ‘C’ (especies colonizadoras, oportunistas, predominantes en condiciones mesotróficas y de alta luz). En el grupo funcional R destacaron las diatomeas elongadas, pennadas,...
12
tesis de grado
Publicado 2016
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Catalizadores basados en óxidos mixtos de NiaFe1-aOx (a=0,5 a 0,9) se prepararon por coprecipitación utilizando como agente precipitante el hidróxido de potasio KOH 1M (pH variable de ~2 hasta 12) para la deshidrogenación oxidativa (ODH) del etano y se caracterizaron por las técnicas de difracción de rayos X (XRD), sorción de N2 (Método BET), reducción a temperatura programada con hidrógeno (TPR-H2), desorción a temperatura programada con amoniaco (TPD-NH3) y espectroscopia láser Raman (LRS). La reacción ODH del etano se realizó en un reactor de lecho fijo de cuarzo para una relación constante W/F (tiempo de contacto) de 0.48 g.s/mL con flujo total de 50 mL/min de la alimentación de los gases y la masa del catalizador fue de 400 mg con tamaño de partícula de 150 m. La introducción del Fe+3 (0.64 Å) al NiO (0.72 Å) aminoró el parámetro de la red cristalina inicia...
13
tesis doctoral
Publicado 2023
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Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Ciencia Animal
14
tesis de maestría
Publicado 2017
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Catalizadores basados en óxidos mixtos de NiFe-a (a=0,8 a 0,9) soportados sobre TiO2 y γ-Al2O3 se prepararon por coprecipitación utilizando como agente precipitante el hidróxido de potasio KOH 1M (pH variable de ~2 hasta 12) para la deshidrogenación oxidativa (ODH) del etano y se caracterizaron por las técnicas de difracción de rayos X (XRD), sorción de N2 (Método BET), reducción a temperatura programada con hidrógeno (TPR-H2), desorción a temperatura programada con amoniaco (TPD-NH3), espectroscopia láser Raman (LRS), espectroscopia Mössbauer (MS), microscopia electrónica de barrido (SEM-EDS) y espectroscopia fotoelectrónica de rayos X (XPS). La reacción ODH del etano se realizó en un reactor de lecho fijo de cuarzo para una relación constante W/F (tiempo de contacto) de 0.48 g.s/mL con flujo total de 50 mL/min de la alimentación de los gases y la masa del catalizado...
15
tesis de maestría
Publicado 2023
Enlace
Enlace
El Norte del Ecosistema de la Corriente de Humboldt (NECH), localizado a lo largo del Sudeste del Océano Pacífico, frente a Perú, es considerado uno de los sistemas naturales más productivos en el mundo, por ello de gran relevancia el estudio del fitoplancton como base de la trama trófica marina. Basados en las relaciones entre la superficie celular, biovolumen y máxima dimensión lineal de las células de las especies del fitoplancton, se encontraron 140 especies en el grupo funcional ‘R’ (especies ruderales, adaptables a condiciones de alta mezcla); 133 especies en el grupo funcional ‘S’ (especies estrés-tolerantes, predominantes en condiciones oligotróficas y de alta luz) y 19 especies en el grupo funcional ‘C’ (especies competitivas, oportunistas, predominantes en condiciones mesotróficas y de alta luz). En el grupo funcional R destacaron las diatomeas elongadas,...
16
artículo
Bioremediation is one of the methods to eliminate metallic pollutants from leach mining. Its use provide technical and economical adventages compared to ionic exchange or membranes. In bioacumulation, a type of bioremediation, metal ions are incorporated into microorganism cells, its inconvenient is necessity to prepare cultures media and special conditions to mantain biomass. On the other hand, biosorption uses natural polymers, called biopolymers; functional features of these macromolecules give them metallic adsorption capacity in predetermined conditions; some of them are algae derivatives like alginates, poliamides from hair, colagen from bond tissues or chitin and chitosan extracted from crustaceous shells. Specially chitosan could be obtained from chitin, second most abundant biopolymer in nature next to cellulose, its main source is food industry of prown, shrimp, crab and simila...
17
artículo
Bioremediation is one of the methods to eliminate metallic pollutants from leach mining. Its use provide technical and economical adventages compared to ionic exchange or membranes. In bioacumulation, a type of bioremediation, metal ions are incorporated into microorganism cells, its inconvenient is necessity to prepare cultures media and special conditions to mantain biomass. On the other hand, biosorption uses natural polymers, called biopolymers; functional features of these macromolecules give them metallic adsorption capacity in predetermined conditions; some of them are algae derivatives like alginates, poliamides from hair, colagen from bond tissues or chitin and chitosan extracted from crustaceous shells. Specially chitosan could be obtained from chitin, second most abundant biopolymer in nature next to cellulose, its main source is food industry of prown, shrimp, crab and simila...
18
tesis de maestría
Publicado 2020
Enlace
Enlace
The presented work demonstrates the process of designing a cheap, low cost three axis force sensor. Further it describes its integration in an array of multiple sensors to measure the distribution of forces acting on the sole of a prosthetic foot. The focus will be on easy manufacturing and common materials since the sensor will be integrated in a low cost prosthesis for lower limp amputees. Using the knowledge from bio mechanics and some basic assumptions for the later use, requirements for the project are derived. After a presentation of some state of the art sensor principles, suitable concepts are collected. Than, the concepts are compared using a comparison table to find the one the fits the requirements the best. A very compelling concept using barometers casted in silicone rubber is tested using a simple prototype to try out whether it is a good candidate or not. The tests show th...
19
tesis de grado
Publicado 2017
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Esta monografía nos explicara lo necesario sobre el manejo de las enfermedades del sistema digestivo y como el odontólogo general debe lidiar con ellas, evitando el uso inadecuado de fármacos. El aparato digestivo reduce los nutrientes de la dieta a formas que las células pueden absorber y usar para producir ATP generando tejidos. Absorbe agua, minerales y vitaminas necesarias para el crecimiento y las funciones de los tejidos corporales eliminando los desechos orgánicos en las heces. El sistema o aparato digestivo agrupa los órganos que interfieren en la digestión de alimentos, está conformado por el tracto o tubo gastrointestinal y los órganos digestivos accesorios. Las funciones del aparato digestivo son: Ingestión, secreción, motilidad, digestión, absorción y defecación, y las túnicas del tubo digestivo son: mucosa, submucosa, muscular y serosa. Inervación del tracto ...
20
tesis de maestría
Publicado 2020
Enlace
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The presented work demonstrates the process of designing a cheap, low cost three axis force sensor. Further it describes its integration in an array of multiple sensors to measure the distribution of forces acting on the sole of a prosthetic foot. The focus will be on easy manufacturing and common materials since the sensor will be integrated in a low cost prosthesis for lower limp amputees. Using the knowledge from bio mechanics and some basic assumptions for the later use, requirements for the project are derived. After a presentation of some state of the art sensor principles, suitable concepts are collected. Than, the concepts are compared using a comparison table to find the one the fits the requirements the best. A very compelling concept using barometers casted in silicone rubber is tested using a simple prototype to try out whether it is a good candidate or not. The tests show th...
