Detección de defectos en textiles mediante técnicas espaciales para análisis de textura

This paper presents the use of spatial analysis techniques texture images for defects identification in textiles, where the application of pre-processing techniques is presented, and the analysis of texture local binary patterns and co-occurrence matrix to extract features to highlight differences and identify defects in textiles using classifier based on the Mahalanobis distance.En el siguiente trabajo se presenta la utilización de técnicas espaciales de análisis de textura en imágenes para la identificación de defectos en textiles, en donde se presenta la aplicación de técnicas para pre-procesamiento, y para el análisis de textura los patrones locales binarios y la matriz de co-ocurrencia con fin de extraer características resaltar las diferencias e identificar los defectos en textiles haciendo uso del clasificador basado en la distancia de mahalanobis

Estudio comparativo de técnicas espaciales para la identificación de defectos en textiles

En este artículo se utilizan técnicas de procesamiento de imágenes para la detección de defectos en textiles en el sector industrial. Se evalúa el desempeño de tres técnicas espaciales con descriptores estadísticos para la extracción de características que son finalmente clasificados mediante una red neuronal. Para el desarrollo del proyecto se utilizó la base de datos texUAN del grupo de investigación GEPRO de la universidad Antonio Nariño.This paper uses image processing techniques to detect defects in fabrics. The performance of three spatial techniques is evaluated by statistical descriptors, and the extracted features are classified by neural networks. The texUAN database, developed by GEPRO research group of the Antonio Nariño University, was used in this study

Diseño e implementación de un Gateway IoT multiprotocolo

This paper describes the implementation of an IoT gateway that allows the exchange of data through different wireless technologies and forwarding of such data to the Internet. The proposed gateway has important advantages such as: supporting for multiprotocol interconnectivity; the remote configuration of wireless nodes for sensor and actuators management; a flexible algorithm to translate the data obtained by sensors into a uniform format for transmission to a cloud server; low energy consumption due to efficient data transfer over the MQTT protocol. In order to demonstrate the usefulness of the developed gateway, a proof-of-concept test was implemented. The implemented scenario consists of 2 wireless nodes responsible for sensing environmental variables and transmitting data to the gateway node through different communication protocols. The obtained results show the feasibility for simultaneous data transmission from the remote wireless nodes to the gateway. Metrics on energy consumption in the devices are also presented.En este artículo se describe la implementación de un gateway IoT que permite el intercambio de datos a través de diferentes tecnologías inalámbricas y el reenvío de dichos datos a Internet. El gateway propuesto incorpora importantes ventajas como:  la interconectividad con diferentes protocolos; permite la configuración remota de nodos inalámbricos para la gestión de sensores y actuadores; utiliza un algoritmo flexible para traducir los datos obtenidos por los sensores a un formato uniforme para la transmisión hacia un servidor en la nube; utiliza el protocolo MQTT, el cual permite la difusión de datos de forma simple para minimizar los recursos utilizados del gateway. Con el fin de demostrar el funcionamiento del gateway desarrollado, se implementó una prueba de concepto compuesta por 2 nodos inalámbricos encargados de sensar 6 variables ambientales y transmitiendo dichos datos al gateway a través de diferentes protocolos de comunicación. Los resultados presentados muestran la transmisión de la información de manera simultánea, desde los nodos inalámbricos remotos hacia el gateway. Además, se presentan métricas sobre el consumo de energía en los diferentes dispositivos que componen el escenario desarrollado

Planeación ambiental para la conservación de la biodiversidad en las áreas operativas de Ecopetrol, ventana Sierra Nevada de Santa Martas, Ciénaga, Magdalena

El estudio se centró caracterizar la riqueza de especies de anfibios, reptiles, mamíferos, aves y plantas de la Reserva Ciudad Antigua ubicada en el municipio de Ciénaga, Corregimiento El Congo, Departamento del Magdalena, así como identificar las especies que son Objeto de Conservación debido a su importancia ecológica, endemismo y/ó amenaza.BogotáPlaneación ambiental para la conservación de la biodiversidad en las áreas operativas de Ecopetro

Primer consenso en leucemia linfocítica crónica de la agrupación mexicana para el estudio de la hematología: epidemiología, diagnóstico y tratamiento

La leucemia linfocítica crónica (LLC) es la leucemia crónica menos frecuente en México. En consideración a los avances recientes, a una mejor clasificación pronóstica y a la introducción de nuevas modalidades terapéuticas, la Agrupación Mexicana para el Estudio de la Hematología organizó el primer consenso mexicano en leucemia linfocítica crónica. Este consenso se llevó a cabo en Cancún, Quintana Roo, México, en Septiembre del 2007. Los objetivos de esta reunión fueron actualizar y compartir los conocimientos de la enfermedad entre los especialistas mexicanos, con el fin de mejorar el diagnóstico y el pronóstico de la LLC en México. En el artículo se discute los aspectos clínicos, diagnósticos y terapéuticos de la LLC

Molecular analysis of Mycobacterium isolates from extrapulmonary specimens obtained from patients in Mexico

<p>Abstract</p> <p>Background</p> <p>Little information is available on the molecular epidemiology in Mexico of <it>Mycobacterium </it>species infecting extrapulmonary sites in humans. This study used molecular methods to determine the <it>Mycobacterium </it>species present in tissues and body fluids in specimens obtained from patients in Mexico with extrapulmonary disease.</p> <p>Methods</p> <p>Bacterial or tissue specimens from patients with clinical or histological diagnosis of extrapulmonary tuberculosis were studied. DNA extracts from 30 bacterial cultures grown in Löwenstein Jensen medium and 42 paraffin-embedded tissues were prepared. Bacteria were cultured from urine, cerebrospinal fluid, pericardial fluid, gastric aspirate, or synovial fluid samples. Tissues samples were from lymph nodes, skin, brain, vagina, and peritoneum. The DNA extracts were analyzed by PCR and by line probe assay (INNO-LiPA MYCOBACTERIA v2. Innogenetics NV, Gent, Belgium) in order to identify the <it>Mycobacterium </it>species present. DNA samples positive for <it>M. tuberculosis </it>complex were further analyzed by PCR and line probe assay (INNO-LiPA Rif.TB, Innogenetics NV, Gent, Belgium) to detect mutations in the <it>rpo</it>B gene associated with rifampicin resistance.</p> <p>Results</p> <p>Of the 72 DNA extracts, 26 (36.1%) and 23 (31.9%) tested positive for <it>Mycobacterium species </it>by PCR or line probe assay, respectively. In tissues, <it>M. tuberculosis </it>complex and <it>M. genus </it>were found in lymph nodes, and <it>M. genus </it>was found in brain and vagina specimens. In body fluids, <it>M. tuberculosis </it>complex was found in synovial fluid. <it>M. gordonae</it>, <it>M. smegmatis</it>, <it>M. kansasii</it>, <it>M. genus</it>, <it>M. fortuitum/M. peregrinum </it>complex and <it>M. tuberculosis </it>complex were found in urine. <it>M. chelonae/M. abscessus </it>was found in pericardial fluid and <it>M. kansasii </it>was found in gastric aspirate. Two of <it>M. tuberculosis </it>complex isolates were also PCR and LiPA positive for the <it>rpo</it>B gene. These two isolates were from lymph nodes and were sensitive to rifampicin.</p> <p>Conclusion</p> <p>1) We describe the <it>Mycobacterium </it>species diversity in specimens derived from extrapulmonary sites in symptomatic patients in Mexico; 2) Nontuberculous mycobacteria were found in a considerable number of patients; 3) Genotypic rifampicin resistance in <it>M. tuberculosis </it>complex infections in lymph nodes was not found.</p

SARS-CoV-2-spike antibody and T-cell responses elicited by a homologous third mRNA COVID-19 dose in hemodialysis and kidney transplant recipients

This article belongs to the Section Medical Microbiology.The effect of a third vaccine dose (3D) of homologous mRNA vaccine on blood levels of SARS-CoV-2-receptor binding domain (RBD)-total antibodies was assessed in 40 hemodialysis patients (HD) and 21 kidney transplant recipients (KTR) at a median of 46 days after 3D. Anti-RBD antibodies were detected in 39/40 HD and 19/21 KTR. Overall, 3D boosted anti-RBD antibody levels (median: 58-fold increase). Neutralizing antibodies (NtAb) against the Wuhan-Hu-1, Delta, and Omicron variants were detected in 14, 13, and 11 out of 14 HD patients, and in 5, 5, and 4 out of 8 KTR patients, respectively. The median fold increase in NtAb titers in HD patients was 77, 28, and 5 and 56, 37, and 9 in KTR patients for each respective variant. SARS-CoV-2-S S-IFN-γ-producing CD8+ and CD4+ T-cell responses were detected in the majority of HD (35 and 36/37, respectively) and all KTR (16/16) patients at 3D. Overall, the administration of 3D boosted T-cell levels in both population groups. In conclusion, a homologous mRNA COVID-19 vaccine 3D exerts a booster effect on anti-RBD antibodies, NtAb binding to Wuhan-Hu-1, Delta, and Omicron variants, and SARS-CoV-2-S-IFN-γ-producing T cells in both HD and KTR patients. The magnitude of the effect was more marked in HD than KTR patients.This research work was supported by funding from the Instituto de Salud Carlos III, Madrid, Spain (FIS, PI21/00563) to DN and by funding from the European Commission NextGenerationEU fund (EU 2020/2094), through CSIC’s Global Health Platform (PTI Salud Global), to RG, and funding from the Valencian Society of Neprology. The project received the Isabel Burches grant from the Valencian Society of Nephrology (2/2/21).Peer reviewe

La magia de tus pensamientos : poesías & cuentos

Recopilación de poesías y cuentos realizados por aprendices del SENA de los programas de Mantenimiento de Motores Diesel, Técnico en Sistemas, Automatización Industrial, Electricidad Industrial, Diseño e Integración de Automatismos Mecatrónicos, Mantenimiento de Equipo Biomédico, Animación 3D, Manejo Ambiental, Diseño e integración de Automatismos Mecatrónicos y Mantenimiento mecatrónico automotriz, entre 2015 y 2017.Poesías 2018 -- Dándome tu vida / Brayan Orlando Jaimes Chaparro -- Tierra infinita / Christian Ricardo Caballero Villamizar -- Lamento a la tierra / Jeferson Alexis Montoya Moreno -- Conciencia por favor / Daniel Rincón -- Salvar un hogar llamado tierra / William Gamboa Arguello -- Planeta tierra / Iván Arley jurado -- Salvemos nuestro planeta / Jonathan David Silva -- Tierra bella / Martin Santiago -- Mi planeta / Fabián Moreno -- Generando conciencia / José Alberto Lizarazo -- Añoranza / Javier Casanova -- Sin tierra… / Gustavo Andrés Rodríguez Mendoza -- Planeta vivo y limpio / Yesid Serrano -- Palabras del destino / Osneider David Hernández Otalvaro -- Planeta tierra / Luis Fernando Isidro -- Medio ambiente / Yorgin David Hernández -- Prevenir / Brayan Mauricio Sanmiguel Luengas -- Nada será cómo antes / Jaime Andres Rodriguez Parrado -- Yo…Sol / Jonathan Bautista -- Lamento / Héctor Mauricio Parra Cuesta -- Nuestro hogar / Juan José Amaya -- Te agradecemos / Edwin Andrés Navarro Rozo, Anderson Cardozo Villamizar -- HErmoso milagro / Jhonatan Jaimes Solano -- El creador / Ana Rosa Hernández Santana -- Cuentos 2015 -- Juventud en la zona azul / Jeniffer Solano Ardila -- Los Ucayali y los Cubeo / Oscar Ivan Rueda Quintero -- Vientos de armonía / Ever Edinson Monsalve Salcedo -- El nacimiento de una nueva era / Carlos Leonardo Ardila Alvarado -- Luz de sueños / Hugo Andrés Álvarez -- Sol de medio día / Claudia Ramírez Guarín -- Cuentos 2016 -- Mucha verraquera mano / Héctor Josué Amado Sandoval -- El viaje de irse y nunca volver / Dayana Marcela Fuentes Duran -- “Santander es hermosa” / Kelly Tatiana Pabón Blanco -- Los valores del SENA / Ana Rosa Hernandez Santana -- La fuerza del espiritu y el deseo de cambiar / Pablo Andrés Capera Rodríguez -- SENA, paz y reconciliación / Adrián Benítez R., Rubén Darío Martínez -- Cuentos 2017 -- Cartas a un pasado / Angelita Delgado Pérez -- ¿Por qué así? ¿por qué tan blanco? ¿por qué no de otra manera? / Cristian Felipe Vargas Buenahora -- El gato pacho pacho, el gato más pacho de todos los pachos / Edwin Matajira García -- Freeland “el paraíso perdido” / Dámaso Antonio Morales Palacin -- Un mundo al revés / Fabio Eduardo Contreras Piñeresna91 página

The PREDICT study uncovers three clinical courses of acutely decompensated cirrhosis that have distinct pathophysiology

Acute decompensation (AD) of cirrhosis is defined as the acute development of ascites, gastrointestinal hemorrhage, hepatic encephalopathy, infection or any combination thereof, requiring hospitalization. The presence of organ failure(s) in patients with AD defines acute-on-chronic liver failure (ACLF). The PREDICT study is a European, prospective, observational study, designed to characterize the clinical course of AD and to identify predictors of ACLF. A total of 1,071 patients with AD were enrolled. We collected detailed pre-specified information on the 3-month period prior to enrollment, and clinical and laboratory data at enrollment. Patients were then closely followed up for 3 months. Outcomes (liver transplantation and death) at 1 year were also recorded. Three groups of patients were identified. Pre-ACLF patients (n = 218) developed ACLF and had 3-month and 1-year mortality rates of 53.7% and 67.4%, respectively. Unstable decompensated cirrhosis (UDC) patients (n = 233) required ≥1 readmission but did not develop ACLF and had mortality rates of 21.0% and 35.6%, respectively. Stable decompensated cirrhosis (SDC) patients (n = 620) were not readmitted, did not develop ACLF and had a 1-year mortality rate of only 9.5%. The 3 groups differed significantly regarding the grade and course of systemic inflammation (high-grade at enrollment with aggravation during follow-up in pre-ACLF; low-grade at enrollment with subsequent steady-course in UDC; and low-grade at enrollment with subsequent improvement in SDC) and the prevalence of surrogates of severe portal hypertension throughout the study (high in UDC vs. low in pre-ACLF and SDC). Acute decompensation without ACLF is a heterogeneous condition with 3 different clinical courses and 2 major pathophysiological mechanisms: systemic inflammation and portal hypertension. Predicting the development of ACLF remains a major future challenge. ClinicalTrials.gov number: NCT03056612. Lay summary: Herein, we describe, for the first time, 3 different clinical courses of acute decompensation (AD) of cirrhosis after hospital admission. The first clinical course includes patients who develop acute-on-chronic liver failure (ACLF) and have a high short-term risk of death - termed pre-ACLF. The second clinical course (unstable decompensated cirrhosis) includes patients requiring frequent hospitalizations unrelated to ACLF and is associated with a lower mortality risk than pre-ACLF. Finally, the third clinical course (stable decompensated cirrhosis), includes two-thirds of all patients admitted to hospital with AD - patients in this group rarely require hospital admission and have a much lower 1-year mortality risk

Carta abierta condenando la crisis en curso y abordando los impactos ambientales y humanitarios en Palestina

Nosotres, biólogues, ecologistas y otres profesionales dedicados a proteger la vida, les escribimos con una solicitud urgente. Les pedimos muy comedidamente que su organización o institución emita un comunicado oficial condenando la crisis en curso y abordando los impactos ambientales y humanitarios en Palestina