bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nonlinear Multiple Earthquake Location and Velocity Estimation in the Canadian Rocky Mountain Trench
Authors: Purba Joshua Chris Shadday , Dettmer Jan , Gilbert Hersh 
Published: July 2020

ABSTRACTThe calculation of earthquake hypocenters requires careful treatment, particularly when prior knowledge of the study area is limited. The prior knowledge, such as wave velocity and data noise, is often assumed to be known in earthquake location algorithms. Such assumptions can greatly simplify the inverse problem but are less general than nonlinear approaches. A nonlinear treatment is of particular importance when the uncertainty quantification of locations is of interest. We present a nonlinear multiple-earthquake location method that is applicable when little prior knowledge of the area exists. Efficient Markov chain Monte Carlo (MCMC) sampling is employed in conjunction with a hierarchical Bayesian model that treats earthquake hypocenter parameters, as well as P-wave velocity, ratio in P-/S-wave velocities, and P- and S-data noise standard deviations as unknown. Hypocenters for multiple earthquakes are located concurrently to provide sufficient constraints for the parameter’s P-wave velocity, ratio in P-/S-wave velocity, and P- and S-data noise standard deviations, which are shared among events. The algorithm is applied to simulated and field data. With field data, 47 event hypocenters are located in 1 yr of data from 10 sensors in the Canadian Rocky Mountain trench. To analyze the probabilistic solutions, we compare single-earthquake and multiple-earthquake locations for the 47 events and find that the multiple-earthquake location produces better-constrained solutions when compared with the single-event case. In particular, depth uncertainties are significantly reduced for the multiple-earthquake location. The algorithm is inexpensive, considering that it is based on an MCMC approach and highly objective, requiring little practitioner choice for tuning.
Pemanfaatan Daun Biduri (Calotropis Gigantea) Sebagai Perekat Pada Pembuatan Briket Serbuk Gergaji Kayu Bayur (Pterospermum Javanicum)
Authors: Eko Rahmanto Dedy , Fitroni Esma Hadi , Rudiyanto Bayu 
Published: July 2020

Abstrak. Kayu bayur banyak digunakan untuk pembuatan bahan baku furnitur yang menghasilkan limbah serbuk gergaji. Kayu bayur memiliki nilai kalor sebesar 4.452,01 kal/gr, kadar abu 1,04% dan kadar air 19,29%. Serbuk gergaji kayu bayur ini sangat berpotensi digunakan sebagai bahan pembuatan briket dengan penambahan perekat. Bahan yang bisa digunakan sebagai pengganti perekat tepung tapioka adalah daun tanaman biduri. Tanaman biduri memiliki kandungan kimia seperti selulosa, pentosan sebagai hemiselulosa, lignin, abu, tanin 9,1mg/g dan pektin 55%. Pembuatan briket dengan perekat daun biduri bertujuan untuk mengetahui bagaimana pengaruh berbagai variasi perekat, dan bagaimana karakteristik briket yang dihasilkan. Penelitian yang telah dilakukan mendapatkan hasil bahwa dari variasi kadar perekat 35%, 40%, dan 45% pada briket terbaik yaitu pada variasi ke BB3 diaman 55% (30 g) arang serbuk gergaji kayu bayur dengan 45% (24,5 g) perekat daun biduri dan karakteristiknya mencapai nilai SNI briket No.1/6235/2000. Pada perlakuan ini nilai yang diperoleh yaitu untuk kadar air 1,8%, kadar abu 7,42%, densitas 0,4235 g/cm3, nilai kalor 5.069,589 kal/g, dan uji tekan 4,0538 kg/cm2.The Use of Leaves Biduri (Calotropis Gigantea) as Adhesives to Making Briquettes Sawdust Wood Bayur (Pterospermum Javanicum)Abstract. Bayur wood is widely used for manufacturing furniture raw materials that produce sawdust waste. Bayur wood has a calorific value of 4,452.01 cal/g, ash content of 1.04% and a moisture content of 19.29%. This bayur wood sawdust is very potential to be used as a briquette making material by adding adhesive to the briquetting process. Material that can be used as a substitute for tapioca flour adhesive is the leaves of the biduri plant. Betell plants have chemical properties like cellulose, pentatosan as hemicellulose, lignin, as, tannin 9.1 mg/g and pectin 55%. The making of briquettes with biduri leaf adhesive aims to find out how the influence of various variation of the adhesive, and how the characteristics of the briquettes produced. The research that has been carried out shows that the variation of 35%, 40%, and 45% adhesive content in the best briquettes is in the variation to BB3 where 55% (30 g) chacrcoal of sawdust with 45% (24.5 g) of adhesive biduri leaves and their characteristics reach to SNI briquettes No.1/6235/2000. In this treatment the values obtained are for water content of 1.8%, ash content of 7.42%, density 0.4235 g/cm3, calorific value of 5,069.589 cal/g, and pressure test of 4.0538 kg/cm2.
Efecto del tipo de activador en un mortero de escoria mezclado con caliza activada alcalinamente
Authors: Torres Rubio Nelson Virgilio , Sarmiento-Rojas Jorge Andrés , Gutierrez Junco Oscar Javier 
Published: July 2020

Introducción: Las escorias activadas alcalinamente han sido una base fundamental en el desarrollo de nuevos cementos con propiedades mecánicas y fisicoquímicas las cuales en algunos casos han sido mejores que las del cemento tradicional, este tipo de productos industriales conlleva al estudio de materiales de construcción alternativos.
Objetivo: Estudiar el efecto de diferentes tipos de activadores alcalinos, adición de caliza y cambios de temperatura sobre las propiedades físico-mecánicas de los morteros a base de escoria activados alcalinamente.
Metodología: Se realiza un análisis fisicoquímico de las características de las materias primas mediante pruebas de MEB, FRX, DRX. Se desarrollaron pruebas preliminares para determinar la dosificación óptima de los activadores utilizados, para luego elaborar los morteros objeto del estudio y evaluar su propiedad mecánica. El estudio se desarrolla para tres soluciones alcalinas Na2SiO3/NaOH (SH), Na2SiO3/Na2CO3 (SC) y Na2SiO3 (SS), así como para dos temperaturas de curado a temperatura ambiente (23ºC) y 60ºC.
Resultados: Como resultado se obtuvo el activador con mejor comportamiento, el cual fue el Na2SiO3/NaOH (SH) alcanzando una resistencia de 35,3 MPa.
Conclusiones: De acuerdo con los resultados, los morteros que presentaron mejor comportamiento fueron aquellos sometidos a temperaturas de 60°C y a mayor tiempo de curado aumentando sus propiedades de resistencia.
Desarrollo de nueva metodología de diseño, análisis y aplicaciones de micro y nanoinstrumentación inteligente soportadas en Ingeniería en Nanobiotecnología para la Automatización Industrial.
Authors: Muñoz Moner Antonio Faustino , Pardo García Aldo , Caicedo Torres Pedro Miguel 
Published: July 2020

Introducción− El presente artículo muestra los resultados de la investigación realizada en el proyecto sobre diseño y desarrollo de nuevas metodologías para el diseño, análisis y aplicación de micro y nanoinstrumentación inteligente soportada en Ingeniería en Nanobiotecnología por tecnología de monitoreo en tiempo real del contenido de fenoles en las aguas residuales industriales, flujos de vertimiento en línea de ductos, tanques de tratamiento, piscinas de estabilización a cielo abierto y en la descarga del vertimiento del agua como parte del desafío presentado por Ecopetrol sobre la necesidad de descontaminación de las aguas residuales en la Refinería de Petróleo de Barrancabermeja.
Objetivo− Lo propuesto anteriormente se traduce en una red de sensores que garantiza la redundancia necesaria para la confiabilidad técnica, que incluye un Sistema Instrumentado de Seguridad (SIS) dotado de un Sistema de Control Redundante (RCS), lo que asegura el funcionamiento óptimo de la instrumentación implementada y además permite reducir el tiempo de medición en cada secuencia de muestreo.
Metodología− A través de la detección de contaminantes en tiempo real se utiliza una red de sensores basados en micro y_nanobioinstrumetación con nariz electrónica, lengua artificial y ojo espectrofotométrico, soportada en tecnología móvil para el monitoreo de los parámetros de calidad del agua (contenido de fenoles) en líneas de tubería en vertimiento y afluentes.
Resultados− En el articulo se exponen los resultados desarrollados de un sistema de monitoreo en tiempo real y control on-line por tecnología móvil de parámetros de calidad del agua (fenoles) en línea de tuberías para vertimientos y afluentes emulados por la replicación funcional del funcionamiento de los sentidos del olfato, sabor y de la visión espectrofotométrica por clonación artificial aplicados en el diseño de una red de sensores y sistemas de control.
Conclusiones− En síntesis, el proyecto presenta una solución alternativa viable soportada en indicadores de alto impacto, técnico-tecnológico, económico y confiable, donde la información se presenta en tiempo real con un registro cada dos minutos, y acceso omnipresente (desde cualquier lugar) por tecnología móvil, con una disminución de los costos de fabricación e implementación en más de cien veces por utilización de MEMS y NEMS.
Habit tic nail dystrophy: a case report affecting single thumb nail
Authors: Oommen Boby John , Kadori Waad Ibrahim Majed 
Published: July 2020

Habit-tic deformity is a classic example of overlap between the domains of dermatology and psychiatry. Mostly seen in adults, it results from the habit of picking or pushing the cuticle backward. A case of habit-tic deformity of a single thumb nail is reported and the simple treatment measure adopted discussed.
A study on otorhinolaryngology related emergency surgical procedures performed under general anaesthesia in a teaching hospital
Authors: Koirala Krishna P. , Karki Bikram B. , Maharjan Manita 
Published: July 2020

<p class="abstract"><strong>Background:</strong> Most of the ear, nose and throat related disorders that present in emergency can be managed without anaesthesia. Some of them are potentially life threatening and critical requiring surgical interventions under general anaesthesia, too. Ear, nose, and throat related emergency conditions are in rise due to increased incidence of road traffic accidents, social violence and physical assault. This study was performed to find out common ear, nose, throat and head and neck related emergency conditions that required emergency surgical procedures under general anaesthesia for their treatment.</p><p class="abstract"><strong>Methods:</strong> One hundred and seventy-seven patients were enrolled in this prospective cross-sectional study. Patients who underwent emergency operative procedures under general anaesthesia were assessed to find out the common reasons of admission and the common procedures performed for their treatment. </p><p class="abstract"><strong>Results:</strong> Out of 177 patients enrolled in the study, 26.6% were children below the age of 10 years. About three fourths (74.6%) had presented with foreign body in the ear, nose, or throat, and about 77% of them requiring anaesthesia were foreign bodies of the esophagus. Next most common surgical procedures were performed for different traumatic injuries (23.7%). Rest 1.7% of patients required other procedures like tracheostomy, sphenopalatine artery cauterization and traumatic split lobule repair under general anaesthesia.</p><p class="abstract"><strong>Conclusions:</strong> Foreign bodies in the ear, nose and throat are the most common emergency conditions requiring emergency surgery under general anaesthesia followed by traumatic cut injuries in our institution. Prompt treatment of the emergency condition is required for the better patient outcome.</p>
Stapedotomy post-operative results and complications
Authors: S. Giri Hanumant , C. Bishnoi Ram , Nayak Pooja D. , Gaikwad Ninad S. 
Published: July 2020

<p class="abstract"><strong>Background:</strong> Otosclerosis is a hereditary localized disease of the bone derived from the otic capsule. It is characterized by alternating phases of bone formation and resorption and patient presents with conductive hearing loss. Treatment of otosclerosis can be of two kinds: hearing aids and surgery. Stapedectomy and stapedotomy are the two surgical procedures done for treatment of otosclerosis. Present study was conducted on 30 patients with otosclerosis who underwent stapedotomy to assess the hearing results post-surgery by serial Audiometric studies and to study the complications of stapedotomy surgery.</p><p class="abstract"><strong>Methods:</strong> This prospective observational study conducted on 30 patients of otosclerosis who fulfilled the inclusion and exclusion criteria. </p><p class="abstract"><strong>Results:</strong> In this study of thirty cases of otosclerosis which were operated for small fenestra stapedotomy, we conclude that Hearing gain post-surgery was remarkable especially for patients with a pure conductive hearing loss. There was no deterioration in hearing after two years of follow-up. In our study on 30 patients we encountered minor complication in 4 patients (13.33%) and 1 major complication of profound sensorineural hearing loss 3.33%.</p><p class="abstract"><strong>Conclusions:</strong> We conclude that stapedotomy is a relatively safe procedure with significant post-surgery hearing benefit.</p>
ESTATÍSTICAS DE INCÊNDIOS ESTRUTURAIS NO BRASIL: DO ‘ANUÁRIO’ AOS DIAS ATUAIS
Authors: Corrêa Cristiano , Duarte Dayse , Braga George Cajaty 
Published: July 2020

<p>O presente artigo discute as estatísticas de incêndios em edificações no Brasil nas últimas décadas, passando pelo ‘anuário’ emitido pelo Instituto Brasileiro de Geografia e Estatística – IBGE, até o primeiro ano da década de 1990, quando por restrições orçamentárias e imprecisões dos números deixou de ser emitidas informações sobre incêndios. Passando pelos debates sobre a implantação de um ‘Sistema Nacional de Informações de Bombeiros’ não efetivado até dias atuais. Chegando a criação de Norma Técnica Brasileira – NBR para aferições de atividades de bombeiros, transcrita em recomendações do Conselho Nacional dos Corpos de Bombeiros do Brasil - LIGABOM. Todavia a possibilidade de cada Corpo de Bombeiros Militar Estadual aferir os eventos atendidos, sem uma padronização exigida em lei, mesmo existindo norma e recomendação específicas aliada a inexistência de uma política nacional consistente sobre o tema, promove um hiato de décadas de informações consolidadas nacionalmente, como consequência não sabemos o quanto grave é o problema dos incêndios e explosões no Brasil.</p><p><strong> </strong></p>
Analysis on the Feasibility of China's "Vendor Economy" under the New Economic Condition
Authors: Sun Qing 
Published: July 2020

<p>Vendor economy, also called street economy, which is often considered as the main income sources for street vendors and was regarded as marginal economy, has grown into a type of economic form. From the perspective of total social wealth, it jump-starts the economy, stimulates people's consumption desire and provides more employment opportunities, which drives a sharp increase in social total consumption, according to a research report analyzed from 2007 to 2017 by the Northeast Securities. During the ten years, China's economic policy is to encourage and support street vendors, and because of this, consumption plates are shown in a more obvious rise in profits, but it also has brought about some negative effects. On the basis of the characteristics and roles of the vendor economy, this paper analyzes its feasibility under the new economic condition through the comparison of its advantages and disadvantages. In addition, some suggestions are put forward to Chinese government and the street vendors.</p>
Using Qi Culture to Promote Regional Economic Development
Authors: Cai Xiaoying 
Published: July 2020

<p>Qi culture is the main source of Chinese national culture, with profound cultural connotation and rich cultural atmosphere. With the continuous deepening of economic development, the development of regional cultural values has also become the main content of regional economic and social construction. This article discusses the causes of regional culture and summarizes the strategies for using Qi culture to promote regional economic development.</p>
MODELAGEM E SIMULAÇÃO CFD DE TROCADOR DE CALOR PARA CONDICIONAMENTO DE AR
Authors: Martins Ribeiro Giardini Luísa Fernanda , Messias Binhonha Tibiriça Álvaro 
Published: July 2020

Em trocadores de calor, o lado do ar representa uma resistência de troca de calor de 85%. Como resultado, para melhorar o desempenho térmico e reduzir o tamanho e o peso, são acrescentadas aletas (superfícies, normalmente metálicas, com alto coeficiente de condução) para aumentar a superfície de contato (Bhuiyan et al., 2012). Principal componente em sistemas de ar condicionado, trocadores de calor do tipo tubo aletado são representantes de trocadores de calor compacto devido a sua elevada capacidade de troca de calor (Dogan et al., 2015). A transferência de calor ocorre por meio de um escoamento cruzado sobre bancos de tubos. Em tais equipamentos, um fluido moverá dentro dos tubos enquanto o outro (ar no caso de um sistema de ar condicionado) se move perpendicularmente aos tubos, direcionado por aletas (Çengel et al., 2012). O objetivo deste trabalho é validar um modelo computacional de um trocador de calor com base nos dados experimentais obtidos por Wang et al. (1996).
SIMULATION OF A PERFECT DIELECTRIC DROP IN ELECTRO-OSMOTIC FLOW OF AN ELECTROLYTE THROUGH A MICROCHANNEL
Authors: Magalhães Barbosa Felisberto Michelle , Vianna Novaes de Carvalho Teixeira Alvaro 
Published: July 2020

This research uses a computational fluid dynamic model to simulate motion and deformation of a dielectric drop in electrolyte solution in a microchannel. Wall charge density, the Debye-Hückel parameter and the Weber number are varied for uncharged, positively and negatively charged drop interfaces. Drop flow and deformation were analysed and the effects of charge distribution, electric field and permittivity jump were discussed. For a positively charged channel wall, negatively charged drops moved faster and positively charged drops moved slower than an uncharged drop. This effect increased for a higher We. Vortex flow was observed inside the drop. For a low surface tension, the drops were elongated due to electric forces acting on its surface with the charged drops deforming more than the uncharged one. When the permittivity component of the force was removed, the drop had a horizontal deformation that was sufficiently high to cause the negatively charged drop to break up.
Propagação de incertezas: um experimento acadêmico simples
Authors: Andrade Ana Carolina Almeida , Reis Heytor Fabricio Arantes Frauches , Siqueira Antonio Marcos de Oliveira , Madureira Matheus Francióle , Gouvea Ninna Alves , Gonzaga Luara Fyalho , Menezes Tielly Lubiana de , Freire Bruno Henrique de Faria 
Published: July 2020

Por definição, as incertezas são uma estimativa da confiabilidade de uma medida. São intrínsecas a qualquer processo de medição e têm sua origem tanto em falhas procedimentais como na própria limitação dos instrumentos utilizados para as aferições. A compreensão de como elas se propagam é fundamental para o planejamento de experimentos, uma vez que ao minimizá-las obtêm-se dados mais confiáveis. O presente estudo, realizado em disciplina de inicial de laboratório de Engenharia Química, traz uma discussão conceitual sobre incertezas e ilustra a sua determinação em um experimento simples, que envolve a determinação de propriedades termofísicas, como a massa específica, a densidade relativa e o peso específico de um detergente comercial. A metodologia utilizada para a análise de incertezas foi baseada nos estudos de Kline e McClintock, e o software Engineer Equation Solver (EES) foi utilizado para os cálculos. Os resultados obtidos foram comparados com os da literatura e os erros durante o experimento foram discutidos, juntamente com a propagação de incertezas advinda dos instrumentos utilizados.
Establishing Zhaoqing Medical Service System to Build the Guangdong, Hong Kong, and Macao Health Community
Authors: Zhu Lina 
Published: July 2020

<p>The construction of the Guangdong, Hong Kong, and Macao health community is not only an inherent requirement for the economic development and social progress of the Pearl River Delta region, but also an inevitable requirement for the realization of the healthy China strategy and the internationalization and modernization of medical and health care in the three cities. This article discusses answers to issues related to the Guangdong, Hong Kong, and Macao health community. It takes the construction of Zhaoqing medical service system in Guangdong Province as an entry point.</p>
Research Progress on the Relevance between Intestinal Flora and Colorectal Cancer
Authors: Hui Yang , Hou Junming , Jia Yong , Dong Ming , Feng Feixue , Jiang Jing , Yang Dezhen 
Published: July 2020

<p>Cancer is a common chronic disease all over the world, which will cause serious health burden. At present, the debate about the role of intestinal flora in the prevention and control of cancer has always existed. Therefore, researchers should pay close attention to the impact of intestinal flora on several cancers (such as colon cancer, liver cancer and breast cancer). In addition, it is reported that intestinal flora may also affect the efficacy of cancer chemotherapy and immunotherapy. This paper introduces some energy research results to help clear the relationship between intestinal flora and cancer, even cancer micro environment. It can help clarify the mist of cancer and gut microbiota, let those little creatures to serve the progress of improving mankind living condition and of health and medicine.</p>
The Strategy Analysis of Integrating the Idea of "Curriculum Thinking and Politics" into the Teaching of Surgical Nursing
Authors: Huang Pingli 
Published: July 2020

<p>In the course of the actual development of surgical nursing teaching, we constantly strengthen the transfer of professional knowledge to integrate ideological education into it. The concept of "curriculum thinking and politics" is integrated into all aspects of teaching. This paper mainly discusses the strategy of integrating the concept of "curriculum thinking and politics" into the teaching of surgical nursing, and the strategy of combining the concept of "curriculum thinking and politics" and the course content of surgical nursing teaching. During and after the teaching of surgical nursing, it carries out scientific and reasonable teaching design and runs "curriculum thinking and politics" through all stages before, so as to train more excellent medical talents for the society.</p>
Discussion on the Introduction of Psychological Behavior Evaluation and Intervention Countermeasures in the Whole Process of Children's Health Care
Authors: Liu Jing 
Published: July 2020

<p>Objective: To explore the introduction of psychological behavior evaluation methods, intervention strategies and effects in the whole process of child care. Methods: From January 2017 to December 2018, 250 children who participated in health care services in our hospital were selected as data, and 125 children were randomly grouped. The control group was a traditional child health care model. The observation group increased children's psychological behavior assessment and intervention. The physical fitness and development quotient of the two groups after 1 year, and parents' awareness of children's health knowledge are compared. Results: The height, head circumference, weight, development quotient of children and parents' knowledge about children healthcare in the observation group (P &lt; 0.05, 96.00%, 94.40%, 95.20%, and 92.00%) were significantly higher than those in the control group (P &lt; 0.05, 81.60%, 76.00%, 77.60%, and 70.40%). Conclusion: The introduction of psychological behavior assessment and intervention application in children's health can promote the growth of children's physique and development quotient, which is conducive to healthy growth. It also enriches parents' knowledge of children's health knowledge. The value of intervention is high.</p>