D
La d (en mayúscula D, nombre ''de'', plural ''des'') es la cuarta letra y la tercera consonante del alfabeto español y del alfabeto latino básico.En español, representa un fonema dental y sonoro. proporcionado por Wikipedia
1
artículo
Publicado 2014
Enlace
Enlace
This research aims to develop a simulation model, for the operation of hydraulic and hydrological system of the Rima-Santa Eulalia River basin that includes the H. P. Huanza project now in construction, with purposes of power generation, water supply for agricultural use and drink water for population of Lima and Callao. The hydraulic system is formed by hydroelectric EDEGEL S.A. that operate using the regulated and unregulated flow of the Santa Eulalia river basin, Rímac river basin, Marcapomacocha Lake watershed and flows into the tunnel Trasandino infiltrators. We evaluated the operation of the project H. P. Huanza located upstream Sheque reservoir, in order to not affect the operation of H. P. Huinco EDEGEL property. The results obtained from the simulation model are acceptable for guaranteeing an average flow rate of 12.51 m3/s to be used by the H. P. Huinco and we can count on 95 ...
2
artículo
Publicado 2020
Enlace
Enlace
Versión accesible transcrita al formato Word (.docx) conforme al artículo 43, literal e) del Decreto Legislativo N.º 822 – Ley sobre el Derecho de Autor del Perú, y al Tratado de Marrakech ratificado mediante D.S. N.º 010-2018-RE.
3
artículo
Publicado 2005
Enlace
Enlace
A simplified version of the Kondo lattice model, thc Kondo necklace model, is studied at finite temperature using a representation for the localized and conduction electron spins in terms of local Kondo singlet and triplet operators. We calculate the double time Green's functions to get the dispersion relation of the excitations of the system. We show that in 3-d there is an antiferromagnetic ordered state at finite temperatures, but in 2-d long range magnetic order occurs only at T O.
4
artículo
Publicado 1955
Enlace
Enlace
The intended purpose of physical anthropology is to gain perspective on the origin of man and his evolution. Those engaged in this field can be better known in more utilitarian science, but become physical anthropologists when seeking a broader perspective of man. This perspective is intriguing but difficult to obtain. Without it, local investigator often loses the broader phenomenon surrounding meaning; with it maybe you can explain a segment of the evolution of man.
5
artículo
Publicado 1956
Enlace
Enlace
Takayasu's disease or nonspecific arteritis young woman, was long regarded as a condition typical of the Asian race, a concept that has been distorted by Western publications increasingly frequent. From the clinical point of view is regarded as primarily neurological, cardiovascular and ocular manifestadones those discussed apropos of a personal case: ill 25-year-old with a history of probable tuberculous infection, who has six years a neurological condition characterized by headache paroxysmal, intermittent claudication and visual facio-brachial muscle; then a apoplectic stroke with coma for three days and right hemiparesis discreet; days after a new apoplectic stroke with coma vigil for two and half months, bilateral motor disorders, mixed aphasia a right hemiplegia persisted for seven months and then monopleiía with predominantly distal hypoesthesia brachial until today. The review f...
6
artículo
Publicado 2019
Enlace
Enlace
Objetivo: Evaluar si la fitoterapia es una alternativa terapéutica para las diferentes patologías existentes siendo la cavidad oral un ambiente inhóspito, en comparación con otras zona del cuerpo, por lo que la recuperación tisular de los tejidos que son sometidos a una cirugía, tardan en su totalidad en cicatrizar produciendo un malestar e inconvenientes al paciente al cual se le practicó el procedimiento quirúrgico necesario, por lo tanto el acelerar el proceso de cicatrización, disminuyendo el proceso inflamatorio sería de gran utilidad, ya que se podría evitar molestias post quirúrgicas en el paciente y al odontólogo. Material y métodos: La actividad cicatrizante de la congona Peperomia Ruiz & Pav se evaluó en un modelo experimental tipo ensayo de laboratorio, siendo la investigación de tipo prospectivo y longitudinal, en cual se usaron ratas Wistar para la prueba pil...
7
artículo
Publicado 2019
Enlace
Enlace
Determinar y conocer bajo criterios de proporcionalidad, cúal debe ser el derecho que prevalezca en el conflicto suscitado entre el derecho a conocer el origen genético e interés superior del menor frente a la tutela de la identidad del cedente del gameto (anonimato). Material y métodos: Se realizó un estudio cuantitativo básico, explicativo y no experimental, se utilizaron cuestionarios y guias a la población de la ciudad de Puno. Resultados: una encuesta realizada a 100 ciudadanos de Puno se observó que el 53% respondieron la alternativa SI, el 38% contestaron la opción NO, mientras que el 9% afirmó no conocer el tema; lo que nos indica que la mayoría de encuestados manifiesta que frente a un supuesto de infertilidad podría recurrir a la aplicación de éstas técnicas, se observó que el 13% respondieron la alternativa SI, mientras que el 66% contestaron la opción NO; y u...
8
artículo
Publicado 2015
Enlace
Enlace
This study compares two nonparametric rainfall data merging methods-the mean bias correction and double-kernel smoothing-with two geostatistical methods-kriging with external drift and Bayesian combination-for optimizing the hydrometeorological performance of a satellite-based precipitation product over a mesoscale tropical Andean watershed in Peru. The analysis is conducted using 11 years of daily time series from the Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation Analysis (TMPA) research product (also TRMM 3B42) and 173 rain gauges from the national weather station network. The results are assessed using 1) a cross-validation procedure and 2) a catchment water balance analysis and hydrological modeling. It is found that the double-kernel smoothing method delivered the most consistent improvement over the original satellite product in both the cross-validation a...
9
artículo
Publicado 2019
Enlace
Enlace
Natural variability and change of the Earth’s climate have significant global societal impacts. With its large heat and carbon capacity and relatively slow dynamics, the ocean plays an integral role in climate, and provides an important source of predictability at seasonal and longer timescales. In addition, the ocean provides the slowly evolving ower boundary to the atmosphere, driving, and modifying atmospheric weather. Understanding and monitoring ocean climate variability and change, to constrain and initialize models as well as identify model biases for improved climate hindcasting and prediction, requires a scale-sensitive, and long-term observing system. A climate observing system has requirements that significantly differ from, and sometimes are orthogonal to, those of other applications. In general terms, they can be summarized by the simultaneous need for both large spatial a...
10
informe técnico
Publicado 1988
Enlace
Enlace
Este informe resume un reconocimiento geológico del área de Tamborapa (Dist. TABACONAS) por encargo de CMPA dentro del Proyecto San-Ignacio Chinchipe. En ésta área anteriormente (1985) geólogos del INGEMMET habían realizado un programa de prospección regional por oro, habiéndose detectado una cierta cantidad de anomalías, en ésta zona, además de algunas estructuras mineralizadas. Nuestro trabajo comprendió un levantamiento geológico regional del área Tamborapa y alrededores a escala 1: 25,000, una caracterización petrográfica de las rocas y sus alteraciones además de un muestreo geoquímico de comprobación de anomalías de oro. El grupo Dr. Leifeld e Ing. Zedano realizó un estudio geológico detallado de las estructuras mineralizada (Qda. Las Minas y su muestreo respectivo (ver su informe). El trabajo de campo se realizó del 08 de mayo al 06 de junio de 1988 .
11
artículo
Publicado 1973
Enlace
Enlace
Un científico israelí que trabaja en la Universidad de Cambridge investigando la simetría de los dibujos que hacen los peces al desplazarse, descubrió que la formación en rombo es el secreto de la eficiencia hidromecánica, y ésta es tan alta que el grupo puede, con facilidad, aventajar nadando a cualquier pez por separado
12
libro
363 p.
13
14
artículo
Publicado 2022
Enlace
Enlace
Modern mobile electronic devices such as smartphones or cell phones can now be used for distant devices such as technical systems to monitor and control. While surveillance systems do not require high standards navigating about the time of transfer of the displayed data. More real-time data are needed for a remote mobile robot transfer. Therefore, it has investigated and measured not only the possibilities of employing mobile devices. But also, the supported data transmission channels, such as UMTS, GSM, Wireless LAN, and Bluetooth. The remotecontrol system is used in many applications such as smart homes, cities, smart hospitals, etc., but it must be today updated to ensure fast-changing technology. Extensive coverage, remote control, and reliable operation in realtime in the deployment of wireless security knowledge. The home automation control system delivers significant features toge...
15
artículo
Publicado 2023
Enlace
Enlace
This paper presents a dynamic response analysis of an offshore monopile wind turbine to be deployed at a near-shore area in the south-centre part of the Peruvian coast (Marcona). It is a 5 MW three bladed wind turbine that operates in an aggressive offshore environment described by its stochastic behaviour. Thus it is necessary to use a statistical approach for its characterization. The operating wind turbine is simulated using an aero-hydro-servo-elastic computational tool (FAST) that allows the simulation of coupled systems. After the simulation, this work analyses relevant dynamic responses (thrust, torque, shear forces, and bending moments). Time series of these responses at critical zones of the wind turbine are presented. The results indicate high variability of the responses and critical fluctuations located at the mudline. It is found that this variability is due to the additiona...
16
artículo
Publicado 2014
Enlace
Enlace
Filiación institucional de autor: Alejo Cochachín Rapre /Autoridad Nacional del Agua - Unidad de Glaciología y Recursos Hídricos (ANA-UGRH), Huaraz, Peru
17
artículo
Publicado 2011
Enlace
Enlace
This study was supported by IMARPE(Peru), the research unit LOCEAN‐IPSL (UMR 7192 CNRS/IRD/UPMC/MNHN) in France and the projects JEAI MIXPALEO,PALEOPECES, PALEOTRACES, DISCOH, PCCC and the‘CátedraCONCYTEC en Ciencias del Mar’. We thank Jorge Vasquez (JPL) for pro-viding the 4km resolution GHRSST‐PP SST data and David Correa forperforming the objective interpolation of these data. Finally, we thankFrancisco Chavez and Monique Messié, with whom we sustained sounddiscussions that helped us for the preparation of this paper.
18
objeto de conferencia
Publicado 2017
Enlace
Enlace
The scope of this paper is to make a feasibility analysis for energy production from sugarcane byproducts in Perú. Therefore, it is shown the history, methods, current scenario and future prospects of sugarcane plantations related to the ethanol industry and the sugar industry. There will be shown analysis of harvest residues (top and leaves). Bagasse is a mill residue, produced after sugarcane juice is extracted from the sugarcane. Nowadays this residue is burnt in boilers and this energy is used to generate steam. In the other hand, harvest residues represent a significant part of the energy contained in the sugarcane, but it is left in the field, or worse; burnt before the harvest. There will also be shown an estimated value of the electricity generation potential from sugarcane residues.
19
artículo
Publicado 2019
Enlace
Enlace
This paper presents the design of a 3-DOF prosthetic wrist for transradial myoelectric upper limb prosthesis that allows the orientation of a prosthetic hand to reduce compensatory movements that cause musculoskeletal problems mainly in the back and shoulder. The device is capable of perform passively abduction-adduction movements and actively flexion-extension and pronation-supination movements. The system has a DC motor that transmits power to the active movements and a solenoid for the choice of the type of movement to be performed. In order to validate the design of the components of the device, calculations and simulations were carried out by finite elements method to determine deformations, mechanical resistance and fatigue to define the critical components and maintenance periods. © 2019 IEEE.
20
artículo
Publicado 2021
Enlace
Enlace
This study was supported by CONCYTEC-FONDECYT en el marco de la convocatoria ?Proyecto Investigaci?n B?sica 2019-01? (grant numbers 355-2019) and by the Vicerrectorado de Investigaci?n y Posgrado de la Universidad Nacional Mayor de San Marcos en el marco de la convocatoria ?Proyecto de Investigaci?n con financiamiento para Grupos de Investigaci?n 2021?. This study was also partially supported by the Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq grant numbers 404984/2018-5 and 301469/2018-0) and the Funda??o Carlos Chagas de Amparo ? Pesquisa do Estado do Rio de Janeiro, Brazil (FAPERJ, grant number E-26/202.909/2017).
