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1
artículo
A clinically significant case is reported, as it is the first to be published in the region. It refers to a patient who was admitted to the hospital through the emergency department after four days ofillness. The initial clinical presentation included lower limb edema and functional class II dyspnea, which progressed to class IV. A 12-lead electrocardiogram showed atrial tachycardia with a heart rate of 187 bpm. Sequential administration of adenosine, verapamil and electrical cardioversion was unsuccessful. Subsequently, amiodarone was given, leading to the restoration of sinus rhythm. On the second day of hospitalization, the patient developed frequent ventricular ectopic beats and episodes of supraventricular ectopic beats, for which amiodarone was continued. On the third day, he presented with an increased frequency of ventricular ectopy and non-sustained ventricular tachycardia, whic...
2
artículo
The functional demand of the temporomandibular joint requires an appropriate biological answer of the tissue that recaver the articular surfaces and the disk, which are interdependent in the functional and structural together with the synovial liquid The fibrocartilage has great copacity of rellular answer in front of the functional requirements, under conditions of normal load it is able to support and to dissipate the forces, however, in eventual loads that overcome the tisular tolerance it will break the homeostatic balance and the illness will begin. the nutritional deficiencies are the related factor with the dysfunctions articulate for deficiency or absence of the synovial liquid, altering the lubrication process The mechanical injury, also that it can limit the cellular functions and to alter the step of the nutrients by way of the synovial fluid, it produces liberation of free ra...
3
artículo
The functional demand of the temporomandibular joint requires an appropriate biological answer of the tissue that recaver the articular surfaces and the disk, which are interdependent in the functional and structural together with the synovial liquid The fibrocartilage has great copacity of rellular answer in front of the functional requirements, under conditions of normal load it is able to support and to dissipate the forces, however, in eventual loads that overcome the tisular tolerance it will break the homeostatic balance and the illness will begin. the nutritional deficiencies are the related factor with the dysfunctions articulate for deficiency or absence of the synovial liquid, altering the lubrication process The mechanical injury, also that it can limit the cellular functions and to alter the step of the nutrients by way of the synovial fluid, it produces liberation of free ra...
4
artículo
Publicado 2024
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Landslides, triggered by heavy rains, constitute globally impactful natural disasters that wreak havoc on both people and infrastructure. It is crucial to develop predictive systems and efficient alerts, incorporating technologies such as the Internet of Things (IoT) to gather environmental data and prevent significant losses. Therefore, the aim of the study was to design and develop an early warning system for landslides using a microcontroller-based wireless sensor network. A digital rocker rain gauge and the MPU 6050, DHT22 and FC-28 sensors were employed. These sensors were distributed at nodes along the Quebrada del Diablo in the city of Tacna. The values captured at each node were processed by the DEVKIT V1 NodeMCU-32 development board, based on the ESP32 microcontroller, and transmitted to a central node through a ZigBee mesh network using Digi's XBee3 devices. The central node wa...
5
tesis de grado
Publicado 2017
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La maloclusión de clase II, es la desarmonía dentoesquelética más frecuente en la población por ello se han creado distintos tipos de tratamientos ortopédicos para dar soluciones que puedan ayudar al paciente a fomentar el equilibrio y armonía en las estructuras tanto esqueletales, dentales y óseas. Esta maloclusión, se caracteriza por una relación distal de la arcada inferior con respecto a la superior, que puede deberse a displasias óseas, a un movimiento hacia mesial del arco dentario y los procesos alveolares superiores, o a una combinación de factores esqueléticos y dentarios. Una de las alternativas terapéuticas se basa en el uso de un aparato funcional, conocido como propulsor mandibular, que es capaz de reestablecer las funciones y transmitir estímulos propioceptivos adecuados a la musculatura y dientes, para lograr así una relación adecuada de los maxilares, tan...
6
artículo
Publicado 2014
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Se muestra las consecuencias erosivas de la emisión de neutrones sobre la distribución de número de masa (A) y energía cinética (E) de los fragmentos de fisión inducida por neutrones térmicos de U-233 y U-235, respectivamente. Además se muestra los efectos de la ruptura de parejas de nucleones, y de la interacción electrostática entre fragmentos en el punto de escisión, sobre la distribución de masa y energía cinética en la región fría de la fisión inducida por neutrones térmicos de U-233, U-235 y Pu-239, respectivamente. La emisión de neutrones erosiona los efectos par-impar sobre la distribución de número de neutrones (δN) de los fragmentos, definido como la diferencia de los rendimientos relativos de los fragmentos con número par (N_p) y número impar (N_i) de neutrones, respectivamente. Para evitar los efectos de la emisión de neutrones, se estudia la fisión ...
7
artículo
Publicado 2013
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This paper shows pair breaking and electrostatic (Coulomb) interaction effects on the distribution of mass and kinetic energy in cold fission of 233U, 235U and 239Pu thermal neutron induced. The fission process ends at the scission point, when the complementary fragments 1 and 2, having masses y A1A2 are formed. Those fragments goes away each other and acquire kinetic energies y E1E2. The fragments emit neutrons eroding mass and kinetic energy distribution. In order to avoid these disturbances, cold fission, i.e. with no neutron emission, is studied. Contrary to expected, for that excitation energy region, tough weak, an even-odd effect is observed.This result is not incompatible with a strong odd-even effect on the charge distribution or neutron number distribution. Moreover In cold fission, the minimum value of total excitation energy ( ), as a function of , is correlated with the "Cou...
8
artículo
Publicado 2013
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This paper shows pair breaking and electrostatic (Coulomb) interaction effects on the distribution of mass and kinetic energy in cold fission of 233U, 235U and 239Pu thermal neutron induced. The fission process ends at the scission point, when the complementary fragments 1 and 2, having masses y A1A2 are formed. Those fragments goes away each other and acquire kinetic energies y E1E2. The fragments emit neutrons eroding mass and kinetic energy distribution. In order to avoid these disturbances, cold fission, i.e. with no neutron emission, is studied. Contrary to expected, for that excitation energy region, tough weak, an even-odd effect is observed.This result is not incompatible with a strong odd-even effect on the charge distribution or neutron number distribution. Moreover In cold fission, the minimum value of total excitation energy ( ), as a function of , is correlated with the "Cou...
9
artículo
Publicado 2019
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This paper shows pair breaking and electrostatic (Coulomb) interaction effects on the distribution of mass and kinetic energy in cold fission of 233U, 235U and 239Pu thermal neutron induced. The fission process ends at the scission point, when the complementary fragments 1 and 2, having masses y are formed. Then those fragments goes away each other and acquire kinetic energies y , reaching the detectors after emission of y neutrons, having masses and kinetic energies, respectively. As a result, in regions where the average of varies abruptly as function of , the distribution of will be wider than it was for the distribution of as a function of . Furthermore, the emission of neutrons erodes odd-even effects on the distribution of neutron number, defined as the difference between the relatives yields of fragments with even and odd, respectively. Neutron emission, consequently, also erodes ...
10
artículo
Publicado 2021
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During the last decade, there was a substantial increase in the research on metal-doped oxide semiconductor nanoparticles due to advances in the engineering of nanomaterials and their potential application in spintronics, biomedicine and photocatalysis fields. In this regard, doping a nanomaterial is a powerful tool to tune its physicochemical properties. The aim of this work is to shine a new light on the role of the neighbouring elements on the oxidation state of the Ce-impurity, from both experimental and theoretical points of view. Herein, we present an accurate study of the mechanisms involved in the oxidation states of the Ce-ions during the doping process of SnO2nanoparticles (NPs) prepared by the polymeric precursor method. X-ray diffraction measurements have displayed the tetragonal rutile-type SnO2phase in all samples. However, the Bragg’s peak (111) and (220) located at 2??2...
11
artículo
Publicado 2012
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Durante los procesos neurodegenerativos la función y viabilidad de las neuronas se reduce. En particular, el incremento patológico en la concentración de calcio intracelular, la alteración de la plasticidad sináptica y apoptosis están implicados en la Enfermedad de Alzheimer (EA), paradigma de un proceso neurodegenerativo, relacionado con la pérdida progresiva de las funciones cognitivas. Para evaluar el efecto neuroprotector de Piper aduncum“matico” se indujo el daño con el péptido Aβ a células cultivadas. Igualmente, células hipocam-pales fueron tratadas con el Aβ, y se evaluó viabilidad celular, niveles de caspasa-3 y expresión de receptores NMDA en sinapsis. También se registró el influjo de calcio intracelular en tratamientos con agonista NMDA y P. aduncum. En la evaluación neuroprotectora hay una reducción de un 20,6% de caspasa-3; un aumento del 9,6% por enc...
12
artículo
Publicado 2012
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During the neurodegenerative processes there is a reduction of the function and viability of neurons. The pathological increase in the intracellular calcium concentration, the alteration of the synaptic plasticity and the apoptosis are implicated in Alzheimer disease (AD, a paradigm of a neurodegenerative process, related with the progressive loss of cognitive functions. To evaluate neuroprotector effect of Piper aduncumdamage was induced with Aβ1-42 and NMDA to cultured cells. So hippocampal cells were treated with Aβ 1-42 1 uM and cellular viability, levels of caspasa-3 and expression of NMDA receptors in synapses were evaluated. Also, intracellular calcium influxe (sobreestimulation with NMDA) of was registered in treatments with P. aduncum. In the neuroprotector evaluation there is a reduction of 20.6% of caspasa-3; one increase of 9.6% over control and recovery of 20.86% for NR1 a...
13
tesis de maestría
Publicado 2020
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The Schramm-Loewner Evolution, or SLE, is a chain of random compact sets that allows us to generate any random curve that satis es conformal invariance as well as the domain Markov property. Its construction goes through the solution of a random version of Loewner's deterministic equation: @tgt(z) = 2 gt(z) f(t) g0(z) = z where the continuous function f is replaced by a stochastic process p kB, where k is a positive constant and B a Brownian motion. This construction enables the inclusion of stochastic calculus tools in the study of the curves generated by the SLE. The main objective of this thesis is to provide an accessible and introductory description of SLE. To do this, Loewner's theorems, which allows us to establish bijections between families of hulls and families of biholomorphisms properly normalized in 1, as well as between real continuous functions of real variable and familie...
14
artículo
Publicado 2017
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Maca is a Peruvian plant native to the central Andes attributed with sexual function, spermatogenesis, improve learning, memory and stress properties, which are reflective of the different colored types. However, the properties of maca are not only related to the ecotype or color, but also to its processing practices. Traditionally, maca is prepared by boiling. The objective of this study is to measure the in vitro antioxidant capacity of the black maca compared to the traditional preparation method and the maca hypoglycemic effect. The maca was divided in three groups based on the boiling time (30, 45 and 60 minutes). DPPH (2,2-diphenyl-1- picrylhydrazyl) and ABTS [2,2’-azinobis-(3-ethylbenzothiazoline)- 6-sulfonic acid] assays where performed in each of the maca sample in order to determine the total antioxidant capacity. A group of rats induced with diabetes via a streptozotocin sho...
15
tesis doctoral
Publicado 2007
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In this work the effect of the optimization of the parameters excess of air and combustion intensity of the anthracite amassed with clay and lime in the increment of the efficiency and flue-gas desulfurization has been determined; for that which a chamber of stationary combustion of laboratory was used and for the rehearsals pilot a boiler of 80 BHP making matter balances and energy evaluating the combustion gases for each level of process variables. In the process of determination the most significant variables, it was followed the model of Plackett and Burman and for their optimization the Patron Yates , for values of excess of air in the range of 5,5 to 17% (in weight) and combustion intensities, between 900 and 1800 MJ/hm³. The maximum efficiency of the combustion chamber was of 81, 20% for an excess of air of 6, 0%, and combustion intensity of 1150 MJ. /h.m³ and 72% of sulfur gase...
16
tesis de maestría
Publicado 2025
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La fijación de la larva metacéstode de Taenia solium al intestino humano es fundamental para la transición del parásito a su estadio adulto. Un proceso clave es la evaginación del escólex, la cual es inducida por sales biliares y enzimas digestivas. Los mecanismos moleculares asociados a este evento no están completamente entendidos. El presente proyecto busca caracterizar la evaginación del escólex a nivel transcriptómico en un modelo in vitro de inducción por ácido taurocólico (AT). Se validaron las condiciones experimentales de acuerdo con los perfiles de expresión de parásitos antes y después de evaginar el escólex mediante PCA y agrupamiento jerárquico. Se anotó funcionalmente el transcriptoma de T. solium mediante Blast2GO y se identificaron transcritos diferencialmente expresados entre parásitos evaginados y no evaginados en presencia o ausencia de AT mediante ...
17
artículo
Publicado 2013
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En este trabajo se muestra los efectos de la ruptura de parejas de nucleones y de la interacción electrostática entre fragmentos sobre la distribución de masa y energía cinética en la fisión fría de la fisión de 233U, 235U y 239Pu inducida por neutrones térmicos. El proceso de fisión termina en el punto de escisión, cuando se forman los fragmentos complementarios 1 y 2, con masas y A1A2. Luego, esos fragmentos se alejan entre sí y adquieren energías cinéticas y E1E2. Los fragmentos emiten neutrones erosionando la distribución de masa y energía. Para evitar estas perturbaciones, se estudia la fisión fría i.e., fisión sin emisión de neutrones. Contrario a lo que se esperaba, en estas ventanas de energía cinética se observa un débil efecto par-impar sobre la distribución de masa de fragmentos. Por otro lado, en la fisión fría se observa que el valor mínimo de la e...
18
tesis de grado
Publicado 2016
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La presente tesis tiene como finalidad evaluar el desempeño de 2 métodos de Súper Resolución aplicados a imágenes médicas digitales en 2D: El método Iterative Back Projecting (IBP) y el método Iterative Kernel Steering (IKS), utilizando el indicador objetivo denominado PSNR (Peak Signal to Noise Ratio) para evaluar el desempeño de cada método en las pruebas sintéticas, el cual se calcula basado en las diferencias que existen entre la imagen original (HR) y la imagen en Súper Resolución (SR) obtenida. La Súper Resolución es una tecnología diseñada en el campo del procesamiento de imágenes, diseñada con la finalidad de obtener una imagen de mayor resolución hasta 8 veces mayor a la imagen o imágenes de entrada, mediante el modelamiento de los fenómenos que afectan su obtención y minimizar sus efectos, mediante la adición de información que permita reconstruir la im...
19
artículo
Publicado 2024
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Esta pesquisa analisa os principais desafios e avanços no uso de chatbots de IA generativa para a geração de textos com erros linguísticos para fins pedagógicos. Especificamente, ela descreverá a metodologia seguida para a reprodução desses erros em espanhol por meio de textos argumentativos. Esses textos apresentavam erros induzidos com o chatbot, que simulava um aluno real, além de adicionar outra versão corrigida pela mesma ferramenta. A metodologia utilizada foi baseada em uma série de prompts usados em benefício do chatbot da OpenAI, o ChatGPT, que também foram aplicados ao chatbot do Google, o Gemini, e ao chatbot da Microsoft, o Copilot. O conhecimento assistido por humanos" (Huete-García e Tarp, 2024) foi fundamental na equação para obter o resultado esperado. Entre as principais conclusões que podem ser tiradas da pesquisa está a de que os chatbots podem fornec...
20
tesis de maestría
Publicado 2020
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The Schramm-Loewner Evolution, or SLE, is a chain of random compact sets that allows us to generate any random curve that satis es conformal invariance as well as the domain Markov property. Its construction goes through the solution of a random version of Loewner's deterministic equation: @tgt(z) = 2 gt(z) f(t) g0(z) = z where the continuous function f is replaced by a stochastic process p kB, where k is a positive constant and B a Brownian motion. This construction enables the inclusion of stochastic calculus tools in the study of the curves generated by the SLE. The main objective of this thesis is to provide an accessible and introductory description of SLE. To do this, Loewner's theorems, which allows us to establish bijections between families of hulls and families of biholomorphisms properly normalized in 1, as well as between real continuous functions of real variable and familie...
