Link Quality Estimation for Wireless ANDON Towers Based on Deep Learning Models.

Data reliability is of paramount importance for decision-making processes in the industry, and for this, having quality links for wireless sensor networks plays a vital role. Process and machine monitoring can be carried out through ANDON towers with wireless transmission and machine learning algorithms that predict link quality (LQE) to save time, hence reducing expenses by early failure detection and problem prevention. Indeed, alarm signals used in conjunction with LQE classification models represent a novel paradigm for ANDON towers, allowing low-cost remote sensing within industrial environments. In this research, we propose a deep learning model, suitable for implementation in small workshops with limited computational resources. As part of our work, we collected a novel dataset from a realistic experimental scenario with actual industrial machinery, similar to that commonly found in industrial applications. Then, we carried out extensive data analyses using a variety of machine learning models, each with a methodical search process to adjust hyper-parameters, achieving results from common features such as payload, distance, power, and bit error rate not previously reported in the state of the art. We achieved an accuracy of 99.3% on the test dataset with very little use of computational resources.

Cranioplasty with a low-cost customized polymethylmethacrylate implant using a desktop 3D printer.

OBJECTIVECranioplasty implants should be widely available, low in cost, and customized or easy to mold during surgery. Although autologous bone remains the first choice for repair, it cannot always be used due to infection, fragmentation, bone resorption, or other causes, which led to use of synthetic alternatives. The most frequently used allogenic material for cranial reconstructions with long-term results is polymethylmethacrylate (PMMA). Three-dimensional printing technology has allowed the production of increasingly popular customized, prefabricated implants. The authors describe their method and experience with a customized PMMA prosthesis using a precise and reliable low-cost implant that can be customized at any institution with open-source or low-cost software and desktop 3D printers.METHODSA review of 22 consecutive patients undergoing CT-based, low-cost, customized PMMA cranioplasty over a 1-year period at a university teaching hospital was performed. Preoperative data included patient sex and age; CT modeling parameters, including the surface area of the implant (defect); reason for craniectomy; date(s) of injury and/or resections; the complexity of the defect; and associated comorbidities. Postoperative data included morbiditiy and complications, such as implant exposure, infection, hematoma, seroma, implant failure, and seizures; the cost of the implant; and cosmetic outcome.RESULTSIndications for the primary craniectomy were traumatic brain injury (16, 73%), tumor resection (3, 14%), infection (1, 4%), and vascular (2, 9%). The median interval between previous surgery and PMMA cranioplasty was 12 months. The operation time ranged from 90 to 150 minutes (mean 126 minutes). The average cranial defect measured 65.16 cm2 (range 29.31-131.06 cm2). During the recovery period, there was no sign of infection, implant rejection, or wound dehiscence, and none of the implants had to be removed over a follow-up ranging from 1 to 6 months. The aesthetic appearance of all patients was significantly improved, and the implant fit was excellent.CONCLUSIONSThe use of a customized PMMA was associated with excellent patient, family, and surgeon satisfaction at follow-up at a fraction of the cost associated with commercially available implants. This technique could be an attractive option to all patients undergoing cranioplasty.

Enseñanza integrada de anatomía e histología en la Facultad de Odontología de la Universidad Nacional de Córdoba, Argentina / Integrated teaching of anatomy and histology in the School of Dentistry, National University of Córdoba, Argentina

INTRODUCCIÓN: Docentes de anatomía, histología y asesoría pedagógica conformaron un equipo para diseñar e implementar una experiencia de enseñanza integrada (EI) en la Facultad de Odontología, Universidad Nacional de Córdoba, Argentina. El objetivo fue promover una mayor integración entre la anatomía e histología del sistema estomatognático y guiar la transferencia a situaciones clínicas. MATERIALES Y MÉTODOS: En 2010 se rediseñó una propuesta sobre EI para su aplicación a la totalidad de alumnos y con todos los docentes, quienes participaron en ateneos interdisciplinarios para la actualización de contenidos, unificación de criterios, etc. Los alumnos realizaron cuatro clases teórico-prácticas y un trabajo práctico elaborado sobre un caso clínico, con la participación de un docente de anatomía y otro de histología. En el trabajo práctico, los alumnos efectuaron una exploración guiada de la cavidad bucal y trabajaron grupalmente para resolver preguntas sobre el caso clínico. Evaluaron cada actividad de EI, indicando aspectos positivos y a mejorar. Los docentes se expresaron a través de una encuesta. RESULTADOS: Los alumnos destacaron que el abordaje integrado les permitió una mejor comprensión y relación de los temas de las dos asignaturas; valoraron el dinamismo, las explicaciones claras y bien ilustradas de las clases, y el trabajo sobre situaciones clínicas. Los docentes consideraron que la EI es una experiencia positiva, desafiante, enriquecedora, que mejora los nexos con sus colegas y alumnos. CONCLUSIONES: La experiencia de EI permitió lograr los objetivos de aprendizaje propuestos para los alumnos y constituyó una valiosa oportunidad formativa para los docentes

INTRODUCTION: Professors of Anatomy, Histology and from the pedagogic area formed a team with the objective of designing and carrying out an experience based on integrated teaching (IT) at the School of Dentistry, National University of Córdoba, Argentina. The main purpose was to achieve more integration between the anatomy and histology of the stomatognathic system as well to guide the transference to clinical situations. MATERIAL AND METHODS: In 2010 a new experience of IT was designed for its application to all the students and with all the professors, who participated in interdisciplinary meetings tending to content updating, criteria unification, and so on. The students attended four theoretical and practical classes and one practical activity elaborated on the basis of a clinical situation, guided by one professor of Anatomy and another of Histology. During the practical activity the students performed an oral cavity examination and worked in groups so as to answer questions referred to the clinical situation. They evaluated each IT activity, indicating positive aspects as well as those requiring adjustments. The teachers gave their opinions through an anonymous quest. RESULTS: The students remarked that the integrated approaching allowed them a better comprehension and the possibility of relating anatomical and histological contents. They also remarked the class dynamism and illustrations, clear explanations, and the activities based on clinical situations. The professors considered that the IT was a positive, defying and enriching experience that also improved the nexus with colleagues and students. CONCLUSIONS: The IT experience allowed to reach the proposed learning objectives for the students and constituted a valuable formative opportunity for the teachers

Pancreatitis Aguda Tóxica por Glifosato: A propósito de un caso / Glyphosate toxic for acute pancreatitis: Report of a case

La pancreatitis tóxica es una entidad clínica poco frecuente (1,4 a 0,3%) cuya patogenia se debe a reacción alérgica o toxicidad directa del fármaco. El diagnóstico se realiza en pacientes con sospecha clínica, con antecedente de exposición a toxinas, en los cuales se descartan otras etiologías. El cuadro clínico se caracteriza por episodio de pancreatitis aguda durante la exposición a la toxina que mejora tras suspender su exposición. Presentamos el caso de un paciente quien ingresa al hospital IVSS Dr. Miguel Pérez Carreño, expuesto a glifosato con cuadro clínico de pancreatitis aguda con alteración de enzimas hepatocelulares, pancreáticas e hiperbilirrubinemia directa. TAC Abdominal: pancreatitis Balthazar B. Ultrasonido abdominal: aumento de tamaño del páncreas. RMN con efecto colangiográfico: sin alteraciones. Ultrasonido endoscópico aumento de tamaño del páncreas. Test inmunológicos con Ac anti músculo liso positivo. Paciente evoluciona satisfactoriamente con tratamiento sintomático tras suspender exposición toxina.

Toxic pancreatitis is a rare clinical entity (1.4 to 0.3%) whose pathogenesis is due to allergic reaction or direct toxicity of the drug. The diagnosis is made in patients with clinically suspected with a history of exposure to toxins, in which other etiologies are discarded. The clinical picture is characterized by acute episode of pancreatitis during exposure to toxin improves after stopping exposure. We report a patient who enters the hospital IVSS Dr Miguel Pérez Carreño, exposed to glyphosate with clinical symptoms of acute pancreatitis with impaired hepatocellular, pancreatic enzymes and direct hyperbilirubinemia. Abdominal CT: pancreatitis Balthazar B. Abdominal ultrasound: enlarged pancreas. NMR cholangiographic effect: unaltered. Endoscopic ultrasound enlarged pancreas. Ac positive immunological anti smooth muscle test. Patient progressed satisfactorily with symptomatic treatment after stopping toxin exposure.

Sirenomelia en neonato gemelo: reporte de un caso y revisión de la literatura / Sirenomelia in a newborn twin: a case report and review

La sirenomelia es una malformación congénita extremadamente rara que se caracteriza por la fusión de ambos miembros inferiores en diversos grados y se presenta un caso por cada 60,000 recién nacidos. Las primeras descripciones médicas y científicas de esta malformación datan desde el renacimiento por autores como Rochéus (1542), Palfun (1553), y Ambroise Paré (1573).

Structural differences between alcoholic and diabetic parotid sialosis.

UNLABELLED: Between the sialosis' etiologic agents, we can find the chronic alcoholism and diabetes. Both nosologic entities are described using a similar histopathologic pattern. OBJECTIVES: The purpose of this work has been analyzing and comparing the histopathological differences between the diabetic and alcoholic sialosis. STUDY DESIGN: We studied 7 parotid glands samples of diabetic patients and 4 samples of normal glands obtained from surgical material were used as a control. For the comparative study, we used 12 parotid glands from chronic alcoholic patients with clinical diagnosis of cirrhosis and 6 autopsies on individuals who had died from alcoholic hepatic cirrhosis. This material was fixed in formaline, processed for embedding in paraffin, standard coloration techniques and immunotechnique for cytokeratin EA/1 y EA/3. RESULTS: In the cases of diabetics, the parotid gland was characterised by the presence of small acini, a bigger number of lipid intracytoplasmic droplets in the acinar and ductal cells, as well as an abundant adipose infiltration in the stroma when compared to the alcoholics. We observed that the cytokeratins' expression was heterogeneous at the acinar level, and very positive in the hyperplasic ducts, compared to the alcoholic and control groups. CONCLUSIONS: These qualitative valorations indicate the differences between the histopathologic pattern of sialosis with different origins.

Diferencias estructurales entre las sialosis parotidea de etiología diabética y alcohólica / Structural differences between alcoholic and diabetic parotid sialosis

Entre los agentes etiológicos de la sialosis se citan el alcoholismo crónico y la diabetes. Ambas entidades nosológicas se describen con un cuadro histopatológico similar.Objetivos: El objetivo de este trabajo fue analizar y comparar las modificaciones estructurales de la sialosis diabética con las de etiología alcohólica.Diseño del estudio: Se analizaron 7 biopsias de glándula parótida de individuos diabéticos y 4 de pacientes no diabéticos (controles), con patología oncológica en regiones vecinas. El estudio comparativo se efectuó con muestras de archivo que comprendieron 12 biopsias parotídeas de pacientes con diagnóstico clínico de cirrosis hepática alcohólica y 6 autopsias de individuos que fallecieron por cirrosis hepática alcohólica. El material fijado en formol e incluído en parafina, se coloreó con técnicas de rutina y se marcó con anticuerpos para citoqueratinas EA/1 y EA/3.Resultados: En los diabéticos, la parótida se caracterizó por presentar acinos de tamaño más reducido, mayor cantidad de inclusiones lipídicas intracitoplasmáticas en las células acinares y ductales e infiltración grasa abundante en el estroma, comparado con los alcohólicos. Se observó que la expresión de citoqueratinas fue heterogénea a nivel de los acinos e intensamente positiva en los ductos hiperplásicos, comparada con los grupos alcohólico y control.Conclusion: Estas valoraciones cualitativas indican diferencias en el cuadro histopatológico entre estas sialosis de distinto origen

Between the sialosis’ etiologic agents, we can find the chronic alcoholism and diabetes. Both nosologic entities are descirbed using a similar histopathologic pattern. ;;Objectives: The purpose of this work has been analyzing and comparing the histopathological differences between the diabetic and alcoholic sialosis.Study design: We studied 7 parotid glands samples of diabetic patients and 4 samples of normal glands obtained from surgical material were used as a control. For the comparative study, we used 12 parotid glands from chronic alcoholic patients with clinical diagnosis of cirrhosis and 6 autopsies on individuals who had died from alcoholic hepatic cirrhosis. This material was fixed in formaline, processed for embedding in paraffin, standart coloration techniques and immunotechnique for cytokeratin EA/1 y EA/3. ;;Results: In the cases of diabetics, the parotid gland was characterised by the presence of small acini, a bigger number of lipid intracytoplasmic droplets in the acinar and ductal cells, as well as an abundant adipose infiltration in the stroma when compared to the alcoholics. We observed that the cytoqueratins’ expression was heterogeneous at the acinar level, and very positive in the hyperplasic ducts, compared to the alcoholic and control groups. ;;Conclusions: These qualitative valorations indicate the differences between the histopathologic pattern of sialosis with different origins

Alcoholic parotid sialosis: a structural and ultrastructural study.

OBJECTIVES: The purpose of this study is to demonstrate the histopathological differences between the initial and advanced stages of Alcoholic Sialosis, a pathology that generally involves parotid hypertrophy and structurally affects, to diverse degrees, the other salivary glands. STUDY DESIGN: An analysis and comparison was carried out of the structural and ultrastructural modifications of the parotid glands from the hepatic biopsies of chronic alcoholics with clinical diagnosis of cirrhosis and from autopsies on individuals who had died from alcoholic hepatic cirrhosis. Various samples of normal gland obtained from surgical material were used as a control. RESULTS: The alterations found in the biopsies corresponded to the modifications discovered in the autopsies of alcoholics. Notable in both cases was the massive accumulation of secretory granules of different size, shape and electrodensity, which occupied the cytoplasm of the acinar cells. In both sample types the excretory ducts were enlarged and the epithelium of the striate ducts presented cells with nuclei and cytoplasm of irregular appearance and arrangement. A moderate adipose infiltration in the stroma and slight periacinal edema was also observed. The biopsies revealed, both at optical and electron microscopical levels, lipid inclusions in the acinar cells and the glandular parenchymal ducts. CONCLUSIONS: The structural and ultrastructural findings of the parotid biopsies and autopsies, clearly show that alterations are already present in the salivary glands of chronic alcoholics before the terminal phase of hepatic cirrhosis. The enlargement of the ductal system lumens could be the principal cause of glandular hypertrophy.

Sialosis Parotídea Alcohólica: estudio estructural y ultraestructural / Alcoholic parotid sialosis: a structural a ultrastructural study

Objetivos. El propósito del presente trabajo fue establecer posibles diferencias histopatológicas entre los estadíos iniciales y terminales de la sialosis alcohólica, patología que generalmente involucra hipertrofia parotídea y afecta estructuralmente en diverso grado a las demás glándulas salivales. Diseño del estudio. se analizaron y compararon las modificaciones estructurales y ultraestructurales de glándulas parótidas provenientes de: A) biopsias de alcohólicos crónicos con diagnóstico clínico de cirrosis hepática, de las que una fracción fue procesada para microscopía óptica (MO) y otra fracción fue fijada en glutaraldehído y procesada para microscopía electrónica de trasmisión (MET) Jeol JEM 1010 B) autopsias de individuos fallecidos por cirrosis hepática alcohólica, procesadas para MO y re-procesadas posteriormente para MET. Una porción de glándula normal obtenida de material quirúrgico fue usada como control. Resultados. Las alteraciones encontradas en las biopsias son considerablemente comparables a las modificaciones encontradas en las autopsias de alcohólicos, especialmente debido a la acumulación de gránulos secretorios de diferente tamaño, forma y electrodensidad, generalmente ocupando todo el citoplasma de las células acinares. En ambos tipos de muestras los ductos excretores se encontraban dilatados y el epitelio de los conductos estriados presentaba células claras y oscuras, con núcleos de aspecto y disposición irregular. Se observó asimismo moderada infiltración grasa en el estroma y leve edema periacinar. En las biopsias se observaron al MO y MET inclusiones lipídicas en las células acinares y ductales del parénquima glandular. Conclusiones. Los resultados estructurales y ultraestructurales encontrados en biopsias y autopsias de parótidas, ponen de manifiesto que las alteraciones ya están presentes en las glándulas salivales de alcohólicos crónicos antes de la etapa terminal de la cirrosis hepática. La dilatación de los lúmenes del sistema ductal podría ser la principal responsable de la hipertrofia glandular (AU)

Histología y embriología bucodental

Prólogo a la segunda edición. Prólogo a la primera edición. Introducción al estudio de la histología y la embriología bucodental. Embriología general humana. Embriología especial bucomaxilofacial. Embriología dentaria (odontogénesis). Cavidad bucal. Glándulas salivales. Complejo articular temporomandibular (CATM). Complejo dentino-pulpar: pulpa dental. Complejo dentino-pulpar: dentina. Esmalte. Periodoncio de protección: encía y unión dentogingival. Periodoncio de inserción: cemento, ligamento periodontal y hueso alveolar. Erupción dentaria. Dientes primarios. Respuestas a las situaciones problemáticas

Histología y embriología bucodental

Prólogo a la segunda edición. Prólogo a la primera edición. Introducción al estudio de la histología y la embriología bucodental. Embriología general humana. Embriología especial bucomaxilofacial. Embriología dentaria (odontogénesis). Cavidad bucal. Glándulas salivales. Complejo articular temporomandibular (CATM). Complejo dentino-pulpar: pulpa dental. Complejo dentino-pulpar: dentina. Esmalte. Periodoncio de protección: encía y unión dentogingival. Periodoncio de inserción: cemento, ligamento periodontal y hueso alveolar. Erupción dentaria. Dientes primarios. Respuestas a las situaciones problemáticas