Evaluation of gold adsorption on activated carbon from real cyanide and thiourea leachate solutions.

The recovery of gold by adsorption using activated carbon from sodium cyanide and thiourea leached solutions are reported in this study. The leached solutions were obtained under real operating conditions from the beneficiation plant "Paz Borja", Machala-Ecuador. Calgon Carbon DG-11 6X12 type, widely used in the local metallurgical industry was used as adsorbent material. The operational parameters varied during the adsorption process experiments included the concentration of leaching agent, agitation speed, dose of activated carbon and initial concentration of gold. The control parameters included density, percentage of solid, pH, temperature, and solution potential. The obtained results were adjusted to mass transfer model by diffusion through the interface and the Freundlich model for the equilibrium isotherms. The analysis of the results indicates a higher adsorption rate of the gold di-cyanide complex on activated carbon compared to gold-thiourea complexes.

Chromosome X-Wide Common Variant Association Study (XWAS) in Autism Spectrum Disorder.

Autism Spectrum Disorder (ASD) displays a notable male bias in prevalence. Research into rare (<0.1) genetic variants on the X chromosome has implicated over 20 genes in ASD pathogenesis, such as MECP2, DDX3X, and DMD. The "female protective effect" in ASD suggests that females may require a higher genetic burden to manifest similar symptoms as males, yet the mechanisms remain unclear. Despite technological advances in genomics, the complexity of the biological nature of sex chromosomes leave them underrepresented in genome-wide studies. Here, we conducted an X chromosome-wide association study (XWAS) using whole-genome sequencing data from 6,873 individuals with ASD (82% males) across Autism Speaks MSSNG, Simons Simplex Cohort SSC, and Simons Foundation Powering Autism Research SPARK, alongside 8,981 population controls (43% males). We analyzed 418,652 X-chromosome variants, identifying 59 associated with ASD (p-values 7.9×10-6 to 1.51×10-5), surpassing Bonferroni-corrected thresholds. Key findings include significant regions on chrXp22.2 (lead SNP=rs12687599, p=3.57×10-7) harboring ASB9/ASB11, and another encompassing DDX53/PTCHD1-AS long non-coding RNA (lead SNP=rs5926125, p=9.47×10-6). When mapping genes within 10kb of the 59 most significantly associated SNPs, 91 genes were found, 17 of which yielded association with ASD (GRPR, AP1S2, DDX53, HDAC8, PCDH19, PTCHD1, PCDH11X, PTCHD1-AS, DMD, SYAP1, CNKSR2, GLRA2, OFD1, CDKL5, GPRASP2, NXF5, SH3KBP1). FGF13 emerged as a novel X-linked ASD candidate gene, highlighted by sex-specific differences in minor allele frequencies. These results reveal significant new insights into X chromosome biology in ASD, confirming and nominating genes and pathways for further investigation.

Genetic variants in DDX53 contribute to Autism Spectrum Disorder associated with the Xp22.11 locus.

Autism Spectrum Disorder (ASD) exhibits an ~4:1 male-to-female sex bias and is characterized by early-onset impairment of social/communication skills, restricted interests, and stereotyped behaviors. Disruption of the Xp22.11 locus has been associated with ASD in males. This locus includes the three-exon PTCHD1 gene, an adjacent multi-isoform long noncoding RNA (lncRNA) named PTCHD1-AS (spanning ~1Mb), and a poorly characterized single-exon RNA helicase named DDX53 that is intronic to PTCHD1-AS. While the relationship between PTCHD1/PTCHD1-AS and ASD is being studied, the role of DDX53 has not been examined, in part because there is no apparent functional murine orthologue. Through clinical testing, here, we identified 6 males and 1 female with ASD from 6 unrelated families carrying rare, predicted-damaging or loss-of-function variants in DDX53. Then, we examined databases, including the Autism Speaks MSSNG and Simons Foundation Autism Research Initiative, as well as population controls. We identified 24 additional individuals with ASD harboring rare, damaging DDX53 variations, including the same variants detected in two families from the original clinical analysis. In this extended cohort of 31 participants with ASD (28 male, 3 female), we identified 25 mostly maternally-inherited variations in DDX53, including 18 missense changes, 2 truncating variants, 2 in-frame variants, 2 deletions in the 3' UTR and 1 copy number deletion. Our findings in humans support a direct link between DDX53 and ASD, which will be important in clinical genetic testing. These same autism-related findings, coupled with the observation that a functional orthologous gene is not found in mouse, may also influence the design and interpretation of murine-modelling of ASD.

Conocimientos sobre donación de sangre en pacientes de un hospital de Amazonas, Perú / Knowledge about blood donation in patients of a hospital in Amazonas, Peru

RESUMEN El objetivo del estudio fue determinar el nivel de conocimientos sobre donación de sangre que tienen los pacientes externos que acuden a un hospital en Bagua Grande. Se realizó un estudio descriptivo transversal durante mayo a julio del 2019. Se elaboró y aplicó un cuestionario estructurado. Se captó a 244 personas que acudieron a consultorios externos mediante un muestreo sistemático. Los participantes obtuvieron una media de respuestas correctas de 8,90 (DE: 3,25) puntos de un total de 21. Se encontró que la edad y el grado de instrucción estaban correlacionados con el puntaje (rho = -0,21; p < 0,001 y rho = 0,38; p < 0,001, respectivamente). La procedencia y ocupación afectaron al puntaje (p < 0,001). Los conocimientos hallados en la población estudiada son bajos, pero esto no estaría relacionado con el antecedente de donación. Las intervenciones que se elaboren para mejorar la donación de sangre no solo se deben enfocar en brindar conocimientos, ya que otros factores estarían más relacionados con este resultado.

ABSTRACT This study aimed to determine the level of knowledge about blood donation among outpatients from a hospital in Bagua Grande. A descriptive cross-sectional study was conducted from May to July 2019. We developed and applied a structured questionnaire. A total of 244 outpatients were recruited through systematic sampling. Participants obtained a mean number of correct answers of 8.90 (SD: 3.25) points out of 21. Age and educational level were found to be correlated with the score (rho = -0.21; p < 0.001 and rho = 0.38; p < 0.001, respectively). Place of origin and occupation affected the score (p < 0.001). We found a low level of knowledge in the studied population, but this would not be related to previous history of donation. Interventions to improve blood donation should not only focus on providing knowledge, since other factors would be more related to this result.

Diagnóstico y tratamiento de la rinosinusitis crónica en adultos. Consenso de expertos: Asociación Colombiana de Otorrinolaringología-2021. / Diagnosis and treatment of chronic rhinosinusitis in adults. Expert consensus: Asociación Colombiana de Otorrinolaringología -2021.

Introducción: la Rinosinusitis Crónica se define como la inflamación crónica de la nariz y los senos paranasales por más de 12 semanas. La prevalencia varía entre el 5% - 30% de acuerdo con la zona geográfica según un estudio de carga de enfermedad (2012-2014), la prevalencia de las enfermedades respiratorias crónicas (rinitis y sinusitis crónica) varió entre el 10% y el 25%. Objetivo: establecer un conjunto de consideraciones basadas en consenso de expertos, para el diagnóstico y el tratamiento de la rinosinusitis crónica en pacientes adultos, en el contexto colombiano. Métodos: se llevó a cabo un consenso formal (Delphi y nominal). Se conformó un grupo de expertos, se definieron el alcance y las preguntas. Se realizaron dos rondas de calificación anónimas, y una discusión para las preguntas sin consenso. En las preguntas con opciones de uno a nueve, se consideró consenso con una mediana de uno a tres o de siete a nueve. En las preguntas tipo Likert, se consideró consenso un porcentaje igual o superior al 80% en acuerdos o desacuerdos. Resultados: se definieron y calificaron 18 preguntas, con la participación de 17 otorrinolaringólogos, de 8 ciudades colombianas, todos miembros de la Asociación Colombiana de Otorrinolaringología y con un promedio de experticia de 19.2 años (Desviación estándar [DE]: 10,2). Se obtuvieron 18 recomendaciones para el diagnóstico y el tratamiento de esta patología. Conclusiones: las recomendaciones emitidas por los expertos permiten orientar y estandarizar el diagnóstico y el tratamiento de la rinosinusitis crónica en adultos, en el contexto de los servicios de salud en Colombia.

Introduction: Chronic Rhinosinusitis is defined as chronic inflammation of the nose and paranasal sinuses for more than 12 weeks. The prevalence varies between 5% - 30% depending on the geographical area according to a disease burden study (2012-2014), the prevalence of chronic respiratory diseases (rhinitis and chronic sinusitis) varied between 10% - 25%. Objective: To establish a set of considerations based on expert consensus, for the diagnosis and treatment of chronic rhinosinusitis in adult patients, in the Colombian context. Methods: A formal consensus (Delphi and nominal) was carried out. A group of experts was formed, the scope and questions were defined. Two anonymous grading rounds were conducted, and a discussion for questions without consensus. In the Questions with options from one to nine were considered consensus with a median of one to three or seven to nine. In the Likert-type questions, a percentage equal to or greater than 80% in agreements or disagreements was considered consensus. Results: 18 questions were defined and scored, with the participation of 17 otorhinolaryngologists, from eight Colombian cities, all members of the Colombian Association of Otorhinolaryngology and with an average experience of 19.2 years (Standard desviation [SD]: 10.2). 18 recommendations were obtained for the diagnosis and treatment of this pathology. Conclusions: The recommendations issued by the experts allow to guide and standardize the diagnosis and treatment of chronic rhinosinusitis in adults, in the context of health services in Colombia.

Manga gástrica laparoscópica en situs inversus total. Reporte de un caso y revisión de la literatura / Laparoscopy sleeve gastrectomy in situs inversus totalis. A case report and literature review

El objetivo de este estudio es revisar una de las opciones quirúrgicas para el tratamiento de la obesidad en pacientes con situs inversus total. Se presenta el caso de una paciente de 39 años de edad con situs inversus total (diagnóstico transquirúrgico) que fue sometida a gastrectomía en manga laparoscópica, con resultados postquirúrgicos óptimos; además, en la revisión de la literatura encontramos 14 casos publicados a nivel mundial de procedimientos quirúrgicos metabólicos.

The objective of this study is to perform a review of one of the surgicaloptions for the treatment of obesity in patients with total situs inversus. We present the case of a female patient of 39 years of age with total situs inversus (trans-surgical diagnosis) and who underwent a laparoscopic sleeve gastrectomy, with optimal postoperative results, in addition a review of the literature is made, finding 14 cases published to global level of metabolic surgical procedures.

"Caracterización clínica de las fracturas faciales ocasionadas por trauma de guerra o violencia civil en el conflicto armado en Colombia del 2012 al 2013 en el Hospital Militar Central de Bogotá, D.C. " / "Clinical characterization of facial fractures caused by military trauma or civil violence in the Colombian armed conflict since 2012 to 2013 in the Central Military Hospital of Bogotá, D.C. "

Objetivo: Determinar las características clínicas y demográficas de los pacientes que ingresan al Grupo Integrado de Trauma Facial (GITF) del Hospital Militar Central (HMC), con fracturas del esqueleto facial por arma de fuego de alta o baja velocidad y heridas por armas de fragmentación, como producto de trauma de guerra o violencia civil. Diseño: Estudio observacional descriptivo realizado en el Hospital Militar Central. Metodologia: Se incluyeron todos los pacientes con trauma de guerra o violencia civil, que ingresaron del 01 de septiembre de 2012 al 1 de septiembre de 2013. Aquellos pacientes que no presentaron trauma maxilofacial fueron excluidos del presente estudio. Resultados: Se incluyeron 15 pacientes durante el periodo de observación descrito. Todos los pacientes fueron de sexo masculino con edad media de 27 años (± 5,8 años). Se encontró que el tipo de arma que más frecuentemente causaba lesiones fueron armas de fragmentación (53,3% n=8) y la característica principal de éstas era el trauma abierto (53,3% n=8). En cuanto a la distribución de las fracturas por tercios faciales se encontró́ que en el tercio superior, solo 2 pacientes (13,3%) presentaron fractura de seno frontal. En el tercio medio, la fractura malar fue la mas frecuente (n=9 60%) y en el tercio inferior la fractura de mandíbula (n=9 60%). Conclusiones: Los pacientes atendidos por el GITF en el HMC son victimas de trauma de guerra con armas de fragmentación que presentan traumas abiertos. Las principales lesiones se presentan a nivel de tercio medio y tercio inferior facial.

Objectives: To Determine the clinical and demographic characteristics of patients admitted to the Facial Trauma Integrated Group (GITF) at Central Military Hospital with injuries and fractures of the facial skeleton, gunshot high or low speed and fragmentation firearm injuries as a product of trauma of war or civil violence. Study Desing: Observational descriptive study conducted in the Central Military Hospital Methods: We included all patients with trauma of war or civil violence, which entered a period since September 1, 2012 to September 1, 2013. Those patients without lesions in the maxillofacial region were excluded from this study. Results: We enrolled 15 males with a mean age of 27 years (±5.8 years). It was found that the type of weapon that caused the injuries most frequently evaluated in the present study were weapons of fragmentation (53.3%, n=8), which also showed that the main feature of these was the open trauma (53, 3%, n=8). In the distribution of facial thirds fractures, in the upper third, only 2 patients (13.3%) had frontal sinus fracture. In the middle third, the most common fracture was malar fracture (n=9) (60%) and in the lower third, the most common fracture was mandibular fracture (n=9) (60%). Conclusion: Patients admitted for care by Facial Trauma Integrated Group (GITF) in the Central Military Hospital, are patients with war trauma, victims with weapons of fragmentation that have open traumas. The main lesions are presented in the middle third and lower third facial.

Guía de práctica clínica para el tratamiento de la rinosinusitis crónica: versión completa / Clinical practice guideline for the treatment of chronic rhinosinusitis: full version

La rinosinusitis (RS) se define como la inflamación de la nariz y los senos paranasales con dos o más síntomas como bloqueo/obstrucción/congestión o secreción nasal (goteo nasal anterior/posterior) más dolor/presión facial y/o reducción o pérdida del sentido del olfato. Adicional, se tienen en cuenta los hallazgos objetivos como la presencia de pólipos nasales y/o descarga mucopurulenta en meato medio y/o edema u obstrucción de la mucosa en el meato medio en la endoscopia nasal. Se pueden considerar o no, los cambios tomográficos como cambios mucosos en el complejo osteomeatal y la mucosa de los senos paranasales. Se reconoce que los síntomas tienen alta sensibilidad, pero baja especificidad, de ahí la necesidad de hallazgos objetivos.

Rhinosinusitis (RS) is defined as inflammation of the nose and sinuses with two or more symptoms such as blockage/obstruction/congestion or nasal discharge. with two or more symptoms such as nasal blockage/obstruction/congestion or nasal discharge (anterior/posterior runny nose) plus facial pain/pressure and/or reduction or loss of the sense of smell. sense of smell. In addition, objective findings such as the presence of nasal polyps and/or nasal presence of nasal polyps and/or mucopurulent discharge from the middle meatus and/or edema or mucosal obstruction or mucosal obstruction in the middle meatus on nasal endoscopy. Tomographic changes may or may not tomographic changes may or may not be considered as mucosal changes in the osteomeatal complex and mucosal osteomeatal complex and the mucosa of the paranasal sinuses. It is recognized that the symptoms symptoms have high sensitivity but low specificity, hence the need for objective findings. findings.

Guía de práctica clínica para el tratamiento de la rinosinusitis crónica: versión corta para profesionales de la salud. Colombia-2023 / Clinical practice guideline for the management of chronic rhinosinusitis: short version for health care professionals. Colombia-2023

La rinosinusitis (RS) se define como la inflamación de la nariz y los senos paranasales con dos o más síntomas como bloqueo/obstrucción/congestión o secreción nasal (goteo nasal anterior/posterior) más dolor/presión facial y/o reducción o pérdida del sentido del olfato. Adicional, se tienen en cuenta los hallazgos objetivos como la presencia de pólipos nasales y/o descarga mucopurulenta en meato medio y/o edema u obstrucción de la mucosa en el meato medio en la endoscopia nasal.

Rhinosinusitis (RS) is defined as inflammation of the nose and sinuses with two or more symptoms such as blockage/obstruction/congestion or nasal discharge with two or more symptoms such as nasal blockage/obstruction/congestion or nasal discharge (anterior/posterior runny nose) plus facial pain/pressure and/or reduced or lost sense of smell sense of smell. Additionally, objective findings such as the presence of nasal polyps and/or nasal presence of nasal polyps and/or mucopurulent discharge in the middle meatus and/or edema or mucous or mucosal obstruction in the middle meatus on nasal endoscopy.

Gestión de la producción en la industria textil "Tejidos Arco S.R.L."

El objetivo principal del proyecto consiste en la aplicación de las herramientas que nos brinda la Ingeniería Industrial, para el mejoramiento de los métodos productivos y administrativos que lleve a incrementar la producción y sea más competitiva y así hacer frente a la crisis por la que actualmente esta atravesando la fábrica Tejidos Arco S.R.L. Este proyecto se basa en el análisis de la fábrica, un estudio de métodos y medición del trabajo, mejora de productividad, planeamiento de la producción y control de la calidad. Como se estableció todos los estudios se realizaran con base a un análisis teórico-práctico, para establecer cuales son las deficiencias que se presentan, acompañados de un análisis de tecnología y un análisis económico que vaya por una parte acorde con las posibilidades de desembolso y otra que este acorde con las exigencias del mercado.