741 research outputs found
LSMT, CT, LSBT e instalación eléctrica BT para suministro a nueva nave Alcarpint S.A.
Nuevo centro de transformación de compañía, LSMT, LSBT + instalación BT de nueva nave Alcarpint S.A. a instalar en Avd. Bartolomé Esteban, 54 en Alcañiz
Explanations for Agile Feature Models
Feature models are widely used to represent product lines and they are key parts of the development process in agile methodologies such as generative and featureoriented programming. One of the most common problems in these cases is checking a feature model to be error-free. Some works cope with detecting errors in feature models, but automated explaination of errors is demanded in order to help the modeler to solve them. in this paper we propose a implementation-independent solution to explain the reasons why dead features, a common kind of error, appear in feature models, giving an implementation example.Ministerio de Ciencia y Tecnología TIC2003-02737-C02-0
Uracil grafted imine-based covalent organic framework for nucleobase recognition
An imine-based covalent organic framework (COF) decorated in its cavities with uracil groups has shown selective recognition towards adenine in water. These results show how the confinement of the base-pair inside the COF's pores allows a remarkable selective recognition in aqueous mediaThis work was financially supported by MINECO (MAT2016-77608-C3-1-P and 2-P, SAF2017-87305-R). IMDEA Nanociencia acknowledges support from the ‘Severo Ochoa’ Programme for Centres of Excellence in R&D (MINECO, Grant SEV-2016-0686). Funding from the European Research Council (ERC-StG 279548) and MINECO (CTQ2014-27729-P and CTQ2017-84727-P) is gratefully acknowledged (DGR
Development of an ultrasonic dry-coupling inspection wheel for Online NDI composite application
8 páginas, 5 figuras. 6th International Symposium on NDT in Aerospace, 12-14th November 2014, Madrid, SpainT he application of ultrasonic waves to the inspection of aeronautic compone
nts is based on the use of couplants
(water, gel, etc...) to facilitate the propagation of the sensi
ng wave through the material. Although several
solutions have been designed to integrate the use of these couplants and the
NDT operations in different stages
of component life (from production to in-service operation) its use incre
ases the complexity of the process and
the cost of the inspection because in some cases special infrastr
uctures may become necessary.
Some of the research effort developed in the last decades has been a
ddressed to reduce the necessity of couplant
gel or fluids. In this sense, the development of ultrasonic inspection w
heels based on special rubbers with a high
degree of humidity has been proposed and is being commercialized nowadays. How
ever, its use is not allowed in
applications where the condition of completely dry coupling is imperative.
Other tools based on air-coupling
have been also developed but they mainly operate in through transmission arrange
ments and its use is limited to
low frequencies.
T his work examines a new wheel-based tool which can operate in dry condit
ion . It has been developed in the
context of the ICARO Project (Innovación en Composites Avanzados y Rear-
End Optimizado) to provide a
nondestructive inspection solution to be integrated into an Out of Autoclave (
OoA) composite manufacturing
process based on electron beam curing technology layer by layer. T he solution
requires be able to inspect very
thin composite specimens (from 0.5mm) in clean and dry conditions compatibl
e with the manufacturing process.
T o overcome these conditions, a special inspection wheel prototype has bee
n developed that integrates a 5MHz
ultrasonic array transducer composed by 128 elements mounted in a particula
r wedge. T his aperture operates in
pulse-echo and generates an ultrasonic image based on linear scanning beam
forming process and a synthetic
aperture acquisition procedure known as 2R-SAFT .
Inspection results obtained from reference standard of different thic
kness are presented. T hese results are
compared with conventional immersion UT inspections and show the high potentia
l of this inspection wheel for
this special applications.Peer reviewe
Reporte de sostenibilidad como herramienta de gestión – Pro Avance SAC.
La presente tesis recopila y analiza los conocimientos recibidos a lo largo del
programa de Maestría en Dirección de Empresa (MBA), mediante su aplicación en una
empresa de la ciudad de Arequipa; con el propósito de identificar el problema clave de la
empresa, comprender y analizar la información externa e interna de la organización y
sostener una propuesta que busque solucionar esta problemática. En tal sentido, el documento
toma como fuente de información los datos de la empresa Pro avance.
Pro avance es una organización con más de 16 años de trayectoria operando en la
ciudad de Arequipa desde el 2003, fundada por sus socios, Sres. Edith Choque y Armando
Romero, como un Centro de Educación Técnica Productiva (CETPRO), que brinda los
servicios de capacitación y consultoría. Asimismo, la organización cuenta con una inmueble
moderno, ubicada en el distrito de Yanahuara y que cumple con los principales protocolos de
seguridad que le ha permitido ser reconocida y certificada bajo esta calificación. Del mismo
modo, a lo largo de los años, Pro avance ha tratado de adaptarse a la vanguardia de un buen
servicio educativo, mediante el uso de la tecnología; sin embargo, como toda pequeña
empresa, tiene grandes retos por delante para seguir incrementando su presencia y su
crecimiento.
Pro avance entiende como desarrollo sostenible el tener un crecimiento económico,
social y ambiental, con un nivel de confianza y compromiso con los grupos de interés. Por tal
motivo, la compañía monitorea, de manera continua, las directrices de su reporte de
sostenibilidad, a fin de identificar sus impactos y encontrar las soluciones o planes de acción
para su mitigación. Pro avance participa del programa de negocios competitivos de Global
Reporting Initiative (GRI) desarrollando sus reportes conforme a dichos estándares.
En consecuencia, este documento presenta la siguiente estructura de análisis: (a)
Situación general de la organización, (b) problema clave de la organización, (c) revisión de la literatura, (d) análisis cualitativo y cuantitativo de la empresa, (e) análisis de causa raíz del
problema, (f) alternativas de soluciones evaluadas, (g) solución propuesta, (h) plan de
implementación y factores de éxito, y (g) resultado esperados. Cabe mencionar, que el reporte
está acompañado de conclusiones, recomendaciones y anexos que complementan la
información de la propuesta.This thesis compiles and analyzes the knowledge received throughout the Master of
Business Administration (MBA), through its application in a company in the city of
Arequipa; with the purpose of identifying the key problem of the company, understanding
and analyzing the external and internal information of the organization and supporting a
proposal that seeks to solve this problem. In this sense, the document takes as a source of
information the data of the Pro Avance company.
Pro Advance is an organization with more than 16 years of experience operating in
the city of Arequipa since 2003, founded by its partners, Edith Choque and Armando
Romero, as a Center for Productive Technical Education (CETPRO), which provides services
training and consulting. Likewise, the organization has a modern property, located in the
Yanahuara district and that complies with the main security protocols that has allowed it to be
recognized and certified under this qualification. Similarly, over the years, Pro Advance has
tried to adapt to the forefront of a good educational service, through the use of technology;
However, like any small business, it has great challenges ahead to continue increasing its
presence and growth.
Pro Avance understands sustainable development as having economic, social and
environmental growth, with a level of trust and commitment to stakeholders. For this reason,
the company continuously monitors the guidelines of its sustainability report, in order to
identify its impacts and find solutions or action plans for their mitigation. Pro Avance
participates in the Global Reporting Initiative (GRI) competitive business program,
developing its reports in accordance with these standards.
Consequently, this document presents the following analysis structure: (a) General
situation of the organization, (b) key problem of the organization, (c) review of the literature,
(d) qualitative and quantitative analysis of the company, (e) root cause analysis of the problem, (f) alternative solutions evaluated, (g) proposed solution, (h) implementation plan
and success factors, and (g) expected results. It is worth mentioning that the report is
accompanied by conclusions, recommendations and annexes that complement the
information in the proposal
Servicios telemáticos sobre nubes privadas en plataformas virtualizadas y distribuidas
En la actualidad, el modelo para proporcionar
servicios basados en alojar cada aplicación en un servidor físico
no es el modelo óptimo, ya que los avances tecnológicos tanto en
hardware como en software hacen que se produzca un
desaprovechamiento de los recursos ofrecidos. Por este motivo,
este trabajo presenta un nuevo modelo basado en un clúster de
servidores con sistema de ficheros distribuido en red y
virtualización de sistemas operativos que mejora la utilización
de los recursos disponibles. Esta nueva arquitectura ofrece una
nube privada que simplifica la gestión de los servicios y aporta
una disminución del coste de mantenimiento, además de añadir
flexibilidad, dinamismo y escalabilidad al sistema.Postprint (published version
Two independent epigenetic biomarkers predict survival in neuroblastoma
Background: Neuroblastoma (NB) is the most common extracranial pediatric solid tumor with a highly variable clinical course, ranging from spontaneous regression to life-threatening disease. Survival rates for high-risk NB patients remain disappointingly low despite multimodal treatment. Thus, there is an urgent clinical need for additional biomarkers to improve risk stratification, treatment management, and survival rates in children with aggressive NB. Results: Using gene promoter methylation analysis in 48 neuroblastoma tumors with microarray technology, we found a strong association between survival and gene promoter hypermethylation (P = 0.036). Hypermethylation of 70 genes significantly differentiated high-risk survivor patients from those who died during follow-up time. Sixteen genes with relevant roles in cancer biology were further validated in an additional cohort of 83 neuroblastoma tumors by bisulfite pyrosequencing. High promoter methylation rates of these genes were found in patients with metastatic tumors (either stage metastatic (M) or metastatic special (MS)), 18 months or older at first diagnosis, MYCN amplification, relapsed, and dead. Notably, the degree of methylation of retinoblastoma 1 (RB1) and teratocarcinoma-derived growth factor 1 (TDGF1) predicts event-free and overall survival independently of the established risk factors. In addition, low RB1 mRNA expression levels associate with poor prognosis suggesting that promoter methylation could contribute to the transcriptional silencing of this gene in NB. Conclusions: We found a new epigenetic signature predictive for NB patients' outcome: the methylation status of RB1 and TDGF1 associate with poorer survival. This information is useful to assess prognosis and improve treatment selection
Molecular epidemiology of Giardia, Blastocystis and Cryptosporidium among Indigenous children from the Colombian Amazon basin
The incidence and prevalence of intestinal parasites in children is most likely due to lack of natural or acquired resistance and differences in behavior and habits closely related to environmental and socioeconomic determinants. The most important protozoa that parasitize humans are Giardia, Entamoeba, Blastocystis, and Cryptosporidium. These parasites present wide intraspecific genetic diversity and subsequently classified into assemblages and subtypes. The Amazon basin is the largest in the world and is the fifth freshwater reserve on the planet. Contradictorily, people living in these areas (Indigenous populations) have poor quality of life, which favors the infection of diseases of fecal-oral transmission. The aim of this work was to unravel the molecular epidemiology of Giardia, Blastocystis and Cryptosporidium across four communities (Puerto Nariño, San Juan del Soco, Villa Andrea and Nuevo Paraíso). We obtained 284 fecal samples from children under 15 years old that were analyzed by direct microscopy (261 samples) and Real Time PCR (qPCR) (284 samples). The positive samples for these protozoa were further characterized by several molecular markers to depict assemblages and subtypes. We observed a frequency of Giardia infection by microscopy of 23.7% (62 samples) and by qPCR of 64.8% (184 samples); for Blastocystis by microscopy of 35.2% (92 samples) and by qPCR of 88.7% (252 samples) and for Cryptosporidium only 1.9% (5 samples) were positive by microscopy and qPCR 1.8% (5 samples). Regarding the Giardia assemblages, using the glutamate dehydrogenase (gdh) marker we observed AI, BIII and BIV assemblages and when using triose phosphate isomerase (tpi) we observed assemblages AI, AII, BIII and BIV. In contrast, Blastocystis STs detected were 1, 2, 3, 4, and 6. Lastly, the species C. viatorum, C. hominis (with the subtypes IdA19 and IaA12R8) and C. parvum (with the subtype IIcA5G3c) were identified. We observed a high profile of zoonotic transmission regarding the Giardia assemblages and Blastocystis STs/alleles. Also, we highlight the elevated frequency of infection by these two protozoans suggesting an active transmission in the area. Our findings reinforces the need to deploy better epidemiological surveillance systems for enteric pathogens in the area. © 2017 Sánchez, Munoz, Gómez, Tabares, Segura, Salazar, Restrepo, Ruíz, Reyes, Qian, Xiao, López and Ramírez
Trends in asthma hospitalizations among adults in Spain: Analysis of hospital discharge data from 2011 to 2020
Aims: To analyze trends in asthma hospitalizations in patients over 15 years of age in Spain. To identify possible changes in incidence, demographic characteristics, clinical conditions, and outcomes.
Methods: We conducted an observational retrospective epidemiological study using the Spanish National Hospital Discharge Database and included all patients hospitalized with a diagnosis of asthma from 2011 to 2020.
Results: A total of 1,102,923 patients were hospitalized with a code for asthma in any diagnostic position; of these, 153,749 (13.94%) had asthma coded as the primary diagnosis (asthma exacerbation). The number of patients with an asthma exacerbation decreased over time, from 15,356 in 2011 to 8804 in 2020. In-hospital mortality (IHM) remained low (around 1.5%) and stable in this subgroup of patients. When the diagnosis of asthma appeared in any diagnostic position, hospitalizations increased for all ages and sexes. In this case, a significant change was observed for IHM, which increased from 3.27% in 2011–12 to 4.36% in 2019–20 (p < 0.001). The main risk factors for IHM in both cases were age over 65 years, need for mechanical ventilation, and associated diagnoses of pneumonia, heart disease, or atrial fibrillation. In contrast, obesity was a predictor of lower mortality.
Conclusion: Our results suggest a decline in the incidence of hospitalizations for asthma exacerbations from 2011 to 2020. In contrast, the number of patients with asthma in any diagnostic position increased progressively, as did mortality, probably owing to an increase in comorbidities in a gradually ageing population
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