bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Study on Mechanical Characteristic of Hydraulic Tunnel Across Fault Zone
Authors: Huang Xubin , Li Xiaomin , Di Shengjie , Lu XI , Miao Zhe , Zhang Ying , Huang Peng , Zhang Kai
Published: December 2022

In the process of excavation of hydraulic tunnels across the fault zone, the surrounding rock often lose steady and collapse, which will threaten the personal security. In this paper, a 3D model was established according to Hami pumped storage power station in Xinjiang. The variation of surrounding rock stress, deformation and plastic zone under the condition of full section excavation without support and timely support after excavation are compares and analysis. The calculated results indicate that the initial ground stress decreases along the axis of the tunnel in fault zone. In the case of excavation without support, the stress of surrounding rock in the fault zone will be released completely. The maximum deformation of tunnel vault along the axis is located in the left affected zone. In the case of timely support after excavation, the stress of surrounding rock in the fault zone will be partially retained. The deformation of tunnel vault is much smaller than that without support after excavation and the upper part of tunnel in fault zone basically has no plastic failure.
Fatigue Test of Basalt Fiber and Polypropylene Fiber Soil-Cement
Authors: Li Xiaomin , Zhang Ying , Ding Xinan , Zhu Wenxiu , Lu Qun
Published: December 2022

Cement-soil is a common method to strengthen soft soil foundation. In engineering construction, a certain amount of fiber is often added to improve its mechanical properties. In order to evaluate the fatigue damage mechanical properties of soil-cement materials under cyclic loading, basalt fiber and polypropylene fiber were added into soil-cement in this experiment to carry out material fatigue test under cyclic loading. The test results show that compared with plain soil-cement, the anti-fatigue ability of fiber soil-cement is significantly enhanced. Under the condition of the same fiber incorporation ratio, the anti-fatigue ability of basalt fiber to soil-cement is significantly improved than that of polypropylene fiber. Under the same load level, the higher the cement incorporation ratio is, the greater the strength is, and the more cycles of fatigue failure are. The log-linear relationship between the fatigue stress level and the fatigue life of soil-cement is obtained through the test, which can be used to calculate the fatigue failure times of different stress levels.
Research on Bouc-Wen Hysteretic Model for Structures with TRMD
Authors: Sun Lei , Wu Cai , Luo Mingxing
Published: December 2022

This paper established the equivalent linear motion equation of TRMD. To further investigate the potential application of the TRMD in nonlinear vibration, the Bouc-wen nonlinear model of the structure with TRMD is provided, the vibration control efficacy of TRMD and hysteretic characteristics of the main structure under harmonic excitation are analyzed. The results show that TRMD suppresses the main structure displacement of the Bouc-wen hysteretic nonlinear structure while the hysteretic loop energy dissipation capacity of the structure itself is reduced. For some seismic excitations, the control effect of TRMD on the nonlinear structure is very obvious, but because the spectral characteristics of different seismic excitations generally vary greatly, the control effect of TRMD on the main structure displacement also varies greatly.
Study on Mechanical Properties of in Situ Granulated Recycled Cement Stabilized Macadam for Cement Concrete Pavement
Authors: Wang Tong , Wang Jie
Published: December 2022

The old cement concrete pavement has a good recycling value, compared with the ordinary recycling technology, in-situ granulation technology can quickly complete the deep crushing of old cement concrete pavement in place, which is fast and efficient, and has better economic benefits. In order to realize the recycling of the old cement concrete pavement, the properties of in-situ granulated recycled aggregate are researched in this study, factory recycled aggregate and natural aggregate through the method of crushing regeneration, and carried out mechanical properties test study on in-situ petrochemical recycled water-stabilized gravel. The results show that the in-situ granulated recycled aggregate of old concrete slab has good physical and mechanical properties and can be applied to cement stabilized macadam of asphalt pavement. The 7d unconfined compressive strength of recycled cement stabilized macadam can meet the strength requirements of asphalt pavement base and subbase.
Short-Term Streamflow Forecasting Based on Gated Recurrent Unit and Attention Mechanism
Authors: Liu Guanjun , Liu Yongqi , Qin Hui , Shen Qin , Zhou Jianzhong
Published: December 2022

High-precision streamflow forecasting has important implications for the water resources efficient planning and rational allocation. Recently, data-driven models represented by deep learning have become a research hotspot. However, existing study less on the application of attention mechanism in streamflow prediction. This study proposes a novel streamflow forecasting model based on gated recurrent units and attention mechanism, GRU-AT. The model automatically extracts the relationship between long-sequence input features and prediction targets through the attention mechanism, and uses the gated recurrent units to extract the time-series dependencies within the runoff sequence, thereby establishing a mapping between historical streamflow sequences and future streamflow. The proposed model is employed to predict the next-day flow at Zhutuo station. Six comparative models and five scoring metrics are employed to validate the superiority of GRU-AT model. Experiments expresses that the GRU-AT surpassed the comparative model in all scoring metrics, verifying that the GRU-AT model can provide accurate short-term streamflow prediction results.
Response of Sodium Chloride Migration in Sandy Soil to Changing Medium Conditions in Black Soil Region of Northeast China
Authors: Chen Mo , Chen Hanbing , Liu Ruishu , Wang Guanhua
Published: December 2022

In order to explore the migration rules of solutes in Nacl sand under unidirectional freezing, the humidity and solute solubility of the soil columns with different water content, density and solute concentration were determined by using calibration test and TDR technique. The results show that the migration of solute in the soil increases the rate of solute movement twice during the test, and the movement of salt is affected by the water movement.
Study on Deformation Mechanism and Influencing Factors of Arch Dam During Dam Impoundment
Authors: Liu Yang , Pei Lei , Liu Youzhi , Li Jintao , Li Jiangwei , Yang Ping
Published: December 2022

The deformation of arch dam during impoundment is critical to evaluate the safety of arch dam, which is influenced by many factors that have different action mechanisms. After the monitoring data at different impoundment stages were comprehensively analyzed, a finite element simulation analysis model that can consider the real temperature, stress and deformation of the dam was set up with the help of simulation analysis method based on the whole process of the dam, which can effectively separate the single deformation caused by water pressure, dead weight, creep, air temperature, seepage and valley deformation. Then, the deformation mechanism of arch dam was gotten and the weight of each deformation influencing factor was accurately defined, thus providing experience and reference for the deformation law analysis of similar projects.
Inversion and Analysis of Working Behavior of Super-High Arch Dam Based on Field Monitoring Data
Authors: Li Jintao , Liu Yang , Pei Lei , Liu Youzhi , Duan Hang , Yang Ping
Published: December 2022

In this paper, the dam of Baihetan Hydropower Station was taken as an example to establish a refined three-dimensional finite element model (FEM) of the dam-dam foundation based on the comprehensive analysis of the safety monitoring data of the dam during the whole life cycle and the simulation analysis for the whole process of the whole dam, so as to accurately understand the working behavior of the dam during impounding process, to do a feedback analysis on the influence mechanism of the overall safety and deformation of the arch dam in the whole process of construction, impoundment and operation, and to predict and evaluate the potential safety risks of different water levels in the whole life cycle of the arch dam, thus providing a scientific basis for dam impounding safety and regulation decision-making.
Application of Model Eigenvalue Detection Technology in Equipment Monitoring in the Hydropower Station
Authors: Liu Jianwei , Zhou Fenqiang , Ding Yong
Published: December 2022

Based on the physical law and the mechanism of equipment designing, a physical information model of important equipment in the power plant is established by using the machine learning algorithm; the model is continuously trained to obtain a new prediction model that changes with the equipment state; eigenvalues of the prediction model are obtained by feature extraction of the model, and the function of state trend warning of the equipment is realized by the trend changes of model eigenvalues and the warning threshold of the equipment.
Research on Power Regulation Performance Optimization of Hydropower Unit AGC Based on Pulse Width Modulation
Authors: Bi Zhiwei , Zhao Bushi , Zhong Yong , Yang Fengxiong , Liu Fuding , Jiang Xinbin
Published: December 2022

This paper studied the AGC active regulation performance optimization method of the long diversion pipe unit of Jiangya Hydropower Station, and putted forward an AGC active regulation performance optimization method. A parameter control strategy with variable regulation period is designed in pulse regulation mode. Large closed loop and small closed loop parameters are used to control the pulse width of LCU calculation, which solves the overshoot problem in the power regulation process. By adjusting the active power distribution strategy of the whole plant, the power regulation rate of small load difference is improved, and the change of AGC regulating parameter water head is automatically adapted. The AGC power regulation performance can be improved by optimizing the AGC power regulation parameters for different units and different water heads.
Safety Evaluation and Support of Diversion Tunnel Slope of Hydropower Station
Authors: Zhang Xu , Jiang Juan , He Haiyan
Published: December 2022

On the basis of analyzing the engineering geological conditions of the inlet slope of diversion tunnel on the left bank of a hydropower station in Jinsha River, the overall three-dimensional geological generalized model of diversion tunnel slope is established according to the geological and topographic data during the construction period. According to the slope excavation and support scheme, the displacement, stress, strength reserve and safety factor of the slope after all excavation are calculated and simulated under the existing support scheme, such as water storage condition, sudden drop of water level condition and transient condition (rainstorm). The strength reduction method is used to calculate the overall safety factor of the inlet slope of the diversion tunnel on the left bank under rainfall, impoundment and sudden drop of water level, and the failure mode of slope instability is predicted and analyzed. The calculation results can provide reference for the safety protection of slope with multiple schemes.
Application of Unmanned Roller in Subgrade and Pavement Construction
Authors: Wang Tong , Mao Yijia
Published: December 2022

At present, the longitudinal slope, cross slope control, thickness and elevation control of subgrade and pavement depend on manual experience, the control results are not uniform, there are process problems with defects such as over compaction, insufficient compaction, omission of compaction and unqualified vibration frequency amplitude in the RCC construction process, and the construction quality can not be obtained in real time, resulting in remedial difficulties. At the same time, the strong vibration environment of the roller has caused great damage to the physical and mental health of the operators. In the current epidemic environment, the project progress is not guaranteed, and the risk of social and public health events increases in the densely populated construction area. In order to deal with the above construction problems, based on high-precision satellite positioning technology, computing technology and sensing technology, this paper develops an unmanned roller to realize the intelligent, unmanned and standardized construction of the roller, reflecting the construction concept of human text and quality first.
Study on the Relationship Between Deep Groundwater and Geothermal Water in Northwest of Shandong Province
Authors: Wang Qingbing , Yang Peijie , Meng Xiangling , Wu Guangwei
Published: December 2022

The northwest area of Shandong Province is rich in geothermal resources. As renewable energy and clean energy with heat energy and water resources as a whole, more and more attention has been paid to it, and it is widely used in heating, breeding, bathing and other industries, good economic and social benefits have been achieved. In the process of long-term development and utilization of geothermal resources and deep groundwater, as both groundwater and geothermal resources belong to groundwater resources, they are utilized by underground pumping and extraction and overlap each other in vertical distribution, experts and scholars have been discussing whether there is a hydraulic connection between geothermal resources and deep groundwater and whether the exploitation of geothermal resources will affect the exploitation of deep groundwater. Based on the comprehensive analysis of the stratigraphic structure, hydrochemical and isotopic characteristics, groundwater regime and water temperature in the northwest of Shandong, it is concluded that the geothermal water in the sandstone reservoir in the northwest of Shandong has a weak hydraulic connection with the deep groundwater, it provides a reference for the protection of deep groundwater resources.
Research on the Application of Key Technologies for Environmental Governance and Resource Recycling
Authors: Guan Xidong , Li Zhengji
Published: December 2022

With the acceleration of urbanization and the increase of pollutant discharges in China, the pollution load of water body in many cities have exceeded the natural self-purification capacity of water bodies, resulting in the deterioration of water quality, or even the occurrence of black and odorous water bodies. The urban black and odorous water bodies, as current water environment issue in China, have aroused a strong public concern. In this paper, the origin and pollution source of black odor in water are analyzed from the aspects of point source, non-point source, endogenous and hydrodynamic conditions. Subsequently, the TiO2/g-C3N5 composite photocatalytic material was prepared by hydrothermal method and high temperature calcination method. The results showed that the degradation rate of methylene blue (MB) reached 91.5% and the degradation rate of tetracycline hydrochloride (TCH) reached 92.4% in 105 min. The high degradation rate can be attributed to the effective combination of the introduced TiO2 and g-C3N5 to form a heterojunction, with the excellent visible light response characteristics of g-C3N5, the photocatalytic performance is significantly improved.
Analysis on Geological Environment Problems in Coal Mining Areas and Suggestions on Their Prevention and Control
Authors: Dang Zhiwei , Wang Dandan
Published: December 2022

The long-term coal mining in coal mining areas has destroyed the original ecological system and resulted in a series of geological and environmental problems. In this paper, the coal mining area in Gaoping City is taken as the subject, and field investigation, data analysis, data statistics, and summarizing are performed to classify the geological and environmental problems in the coal mining area, and identify the causes of water and soil pollution, surface vegetation destruction and occupying of land resources, and mine geological disasters. In addition, combined with the actual geological conditions of the coal mining area, some suggestions on the geological and environmental control are put forward from two aspects of the regulations and engineering prevention and control.
Energy Efficiency of Rural Residential Buildings in the Cold Zone: A Case Study on Guanzhong Plain
Authors: Song Bing , Jiao Tingting , Yang Liu
Published: December 2022

Rural residential building is one of the main building types, its building energy consumption accounted for 22% of the total in China. As the lack of building energy conservation awareness, most rural dwellings have a common phenomenon contains poor indoor thermal environments and energy wasted. To investigate a feasible measure of rural residential buildings in Guanzhong plain, a study was conducted to find the optimal measures for achieving energy efficiency. In this study, the field measurements of a typical rural residential building selected in Xi’an during the coldest month shows low temperature and black ball temperature indoor. Numerical building simulation illustrated this building has large energy-saving potential. An economic analysis of energy-saving measures for the optimal scheme combined with the investment payback period method found that the payback period was the shortest when the wall and roof are optimized for energy saving.
Design of a Spring Cold Warning System for Kiwifruit Orchards Based on the Internet of Things
Authors: Zhang Xingbo , Sun Zhaozhu , Sun Xiangqun , Ji Weishuai , Zhang Xiangyu
Published: December 2022

The design illustrates the working principle of the spring cold warning system in kiwifruit orchards, develops a warning scheme based on the Internet of Things and wireless sensor networks, establishes a three-dimensional model of the frame structure of the kiwifruit orchard and the wind-blocking device through SolidWorks software, and selects a heat sink and a heat regulating device according to the actual planting environment. The design was simulated using the CIIC IOT comprehensive experimental platform. The experimental results showed that the system performed well, all the designed functions could be realized, the sensing module data collection was accurate when the outdoor temperature decreased to 1°C, and the controlled motor, electric heating module and fan could start normally, which verified the feasibility and practicality of the kiwifruit orchard spring cold warning system and provided a theoretical basis for the actual future kiwifruit orchard It provides a theoretical basis for future practical construction of kiwifruit orchards.
Study on Segmented Grouting and Consolidation Technology of Borehole Orifice Pipe for Water Exploration and Drainage
Authors: Chen Weichong , Yan Gongbin , Wang Hao , Shan Liyan , Wang Deji , Qin Haiming , Xie Peng , Li Huizhou
Published: December 2022

The quality of grouting and consolidation of orifice pipe in water exploration and drainage drilling is directly related to whether a large amount of water from drilling holes can be successfully controlled. For drilling holes with fissure water within 3 m of drilling holes, grouting and consolidation of orifice pipe is a difficult point in water exploration and drainage. By studying the principle of segmented grouting technology, casing installation construction technology and technical parameters of segmented grouting consolidation and water plugging, we have solved the problem of grouting consolidation of orifice pipe under the condition of fissure water. In the field, the segmented grouting technology is adopted, which is divided into two sections. The first section grouting solves the problem of hole fixing in the first half of orifice pipe, and the second section grouting solves the problem of plugging orifice fissure water and hole fixing. After hole fixing by the above method, the water injection pressure test is successfully passed. The results show that the segmented grouting method can effectively solve the problem of orifice pipe fixation with fissure water.
Simulation and Effect Analysis of Traffic Cooperative Control Algorithm for Urban Mixed Traffic System
Authors: Peng Jiayi , Zhou Yao
Published: December 2022

In recent years, with the continuous development of experimental traffic engineering, traffic simulation has gradually become an important means to analyze problems, and many researchers evaluate and verify their corresponding results through simulation. In this paper, MATLAB software is used to design the numerical simulation system of the cooperative control model of the main line of the expressway, the on-ramp and the adjacent intersection group. The traffic situation is differentiated by controlling the traffic demand, and the cross-matching simulation is carried out for different saturation situations of the intersection and the expressway. Simulation results show that the cooperative control model can effectively reduce the total vehicle delay in the affected area of on-ramp, balance the vehicle distribution in the control area, and improve the operation efficiency of the whole road network.
The System Design of Agricultural Environmental Monitoring Based on Web
Authors: Zhang Jie , Wang Meng , Zhao Qing , Zang Hecang , Li Guoqiang , Zheng Guoqing
Published: December 2022

To realize the digital and intelligent management of the agricultural production process, reduce farmland pollution and alleviate the contradiction between supply and demand of agricultural water, this paper studies and designs a farmland environment collection and remote environmental monitoring system based on the network system. The system uses sensors to collect ecological information related to crop growth, such as high temperature, humidity, solar radiation, rainfall, soil temperature, and moisture. It then transmits the data to the data processing module through wireless transmission. At last, the STM 32 F 103 RCT 6 chips are used to process and analyze the collected data and visualize the collected real-time data and analysis results. As a result, according to the demand for water and fertilizer for crop growth, agricultural irrigation can be guided to effectively improve the efficiency of farmland management, which is of great significance for promoting social and economic development.
Operational Indicators of Smart Container Ports
Authors: Zhou Dan , Zhang Lei , Zhou Yucheng , Li Chunxu , Liu Changhui
Published: December 2022

Aiming at the expression needs of the status quo evaluation, risk identification and future prediction of smart container ports, this paper classifies the business sectors of container ports as indicators, the indicators describing the port’s operational status, the key operational risks of the port, and the predictive indicators for the port’s operational benefits are studied in an analytical way. The evaluation indicators of smart container port operations, the key risks of port operations and the indicators that need to be forecasted for the forecasting needs of operational benefits are obtained. The research on the operation indicators of smart container ports can provide indicators for the current status of port operations, risk identification and prediction, and provide support for the operation management of smart container ports.
The Condition of Cigarettes and Other Tobacco Products Act: Case Example of IP Estate area
Authors: Kumar Ritesh , Tm Samyu
Published: December 2022

Many studies were done in India specifically suggesting that tobacco addiction has increased. Cigarettes and Other Tobacco Products Act of India, 2012, was made to ban the sale of cigarettes and other tobacco products within 100m of any institution. Proximity and ease of access to such addictive products are one of the main reasons for the increase in tobacco addiction in India. There are still many shops which openly sell cigarettes and tobacco-based products.
Solitary Polyp with Insertion into the Roof of the Nostril
Authors: Acuña Ramírez Ashiria Reseda , Tornaco Raúl , Mena Canata Carlos
Published: December 2022

Pólipo coanal es el término utilizado para una masa de tejido blando, solitaria y benigna que se extiende hacia la unión de la cavidad nasal y la nasofaringe; es decir, la coana. Los pólipos coanales nasales se presentan típicamente en tres formas diferentes: pólipos antrocoanales, esfenocoanales y etmoidocoanales. Sitios atípicos de origen han sido reportados en la literatura; por ejemplo, el tabique nasal y el cornete inferior. El conocimiento de los médicos sobre la existencia de pólipos coanales de sitios inusuales puede ayudar en el diagnóstico de los mismos, considerando crucial descartar previamente otros potenciales diagnósticos para estos casos de presentación atípica. A continuación reportamos el caso de un pólipo inflamatorio de inserción en techo de fosa nasal en un paciente de 65 años diagnosticado y tratado en nuestro servicio, cuyo caso es el primero reportado en la literatura.
Hiperpigmentação Mucocutânea Associada à Terapia de Hidroxiureia em Paciente com Trombocitemia Essencial: Relato de Caso
Authors: Rodrigues Daniela de Oliveira Werneck , Santos Augusto Cézar Apolinário dos , Espósito Thais Sette , Fonseca Lucas Augusto Niess Soares , Mathiasi Lucas Barra , Abreu Nathália Chebli de , Costa Monica de Albuquerque , Magalhães Nathalia Noyma Sampaio , Fabri Júlia Campos
Published: December 2022

Introdução: A hiperpigmentação mucocutânea é uma condição dermatológica que pode estar relacionada a tratamentos quimioterápicos, a exemplo das terapias com uso de hidroxiureia (HU). A HU é um fármaco citostático de amplo uso nas doenças mieloproliferativas e compõe a principal linha de tratamento da trombocitemia essencial (TE). O presente estudo tem por objetivo relatar um caso raro de hiperpigmentação mucocutânea em um paciente com TE. Relato do caso: Paciente do sexo masculino, 68 anos de idade, 89 kg, com diagnóstico de TE, em uso de HU 2 g/dia. Com três meses de terapia, apresentou lesões hiperpigmentadas de coloração acastanhadas em pele das mãos e mucosa oral (língua). Em decisão partilhada com o médico-assistente, o paciente optou pela continuação do uso do medicamento. Após seis anos de acompanhamento, as lesões mantêm-se estáveis. Conclusão: A hiperpigmentação mucocutânea associada à terapia com HU é um evento benigno secundário ao uso do fármaco e não exige a interrupção de uso, porém, sua retirada, ou redução das doses, geralmente leva à diminuição ou ao desaparecimento das lesões.
Compromiso cardiológico y marcadores inflamatorios en niños con Síndrome Inflamatorio Multisistémico relacionado a la infección por COVID-19
Authors: Briones Diaz Yeny , Fritis Lattus Ana , Aravena Morales Diana Alejandra , Agurto Diaz Paulina
Published: December 2022

La infección por coronavirus 2 (SARS-CoV-2) se ha expandido rápidamente. En pediatría está des- crito un cuadro similar al shock, multisystem inflammatory syndrome in children (MIS-C) o pediatric inflammatory multisystem syndrome temporally associated with SARS-CoV-2 (PIMS-TS). Los meca- nismos de compromiso cardiológico no están aclarados. Objetivo: Describir el compromiso cardio- lógico y marcadores inflamatorios en pacientes hospitalizados con MIS-C en un hospital terciario. Pacientes y Método: Estudio observacional, retrospectivo, en menores de 15 años portadores de MIS-C. Se obtuvieron variables demográficas, clínicas y de laboratorio, incluyendo troponina, pépti- do natriurético tipo B (proBNP), ecocardiograma y electrocardiograma (ECG). Se comparan pacien- tes con/sin compromiso cardiológico (CCC/SCC). Análisis estadístico: QuickCalcs-©2018 GraphPad Software, p < 0,05. Resultados: Trece pacientes con diagnóstico de MIS-C, 9 varones, mediana de edad 9,5 años. Todos presentaron fiebre y dolor abdominal, agregando uno o más de los siguientes síntomas: vómitos, exantema, diarrea, mucosas alteradas y/o edema. Cinco pacientes presentaron compromiso hemodinámico, 9/13 se catalogaron CCC. Las troponinas resultaron elevadas 4,1 veces en CCC (p < 0,05), ProBNP mediana CCC 6.940 pg/ml vs 921 pg/ml en SCC (p < 0,05), Ferritina mediana CCC 482 vs 154 ng/ml en SCC (p < 0,01), plaquetas CCC 106.000 vs SCC 207.000/mm3 (p < 0,05). El Ecocardiograma mostró derrame pericárdico (N = 6), disfunción sistólica leve (N = 4), disfunción moderada (N = 1) y alteraciones coronarias (N = 3). En el ECG, 3 pacientes presentaron alteración transitoria de repolarización y 1 bloqueo auriculoventricular de primer grado. Ninguno requirió apoyo con oxigenación por membrana extracorpórea, sin fallecidos. Conclusión: El com- promiso cardiológico en niños hospitalizados con MIS-C es frecuente. Nuestra serie mostró síntomas inespecíficos y transitorios; los pacientes con compromiso hemodinámico respondieron precozmen- te a tratamiento médico, con una evolución favorable. Los marcadores en pacientes CCC fueron troponina, ProBNP, ferritina y trombocitopenia. El hallazgo ecográfico más frecuente fue derrame pericárdico. Se evidencia la importancia de la evaluación cardiológica tanto clínica como de labora- torio en estos pacientes.
Estrategias parentales de alimentación en niños con un Trastorno de Evitación/Restricción de la Ingesta de Alimentos (ARFID): Asociación con la conducta de rechazo a los alimentos
Authors: Saravia Susana , Diaz-Castrillón Fernanda , Cruzat-Mandich Claudia , Lizana-Calderon Paula , Gomez Daniela , Corona Francisca
Published: December 2022

El Trastorno de Evitación/Restricción de la Ingesta de Alimentos (ARFID) se caracteriza por la evitación persistente y/o restricción de la ingesta de alimentos, observándose tres presentaciones clínicas: falta de interés en la comida, selectividad basada en la sensibilidad sensorial, y miedo a las consecuencias aversivas. Las estrategias utilizadas por los padres durante las comidas pueden predisponer o mantener el rechazo alimentario del niño. Objetivo: determinar asociación entre las estrategias parentales utilizadas en la alimentación, con la conducta de rechazo a los alimentos en niños/as ARFID. Pacientes y Método: Investigación de corte transversal. Para la selección de los participantes se utilizó un muestreo no probabilístico. Participaron 24 padres/madres cuyos hijos habían sido diagnosticados con un ARFID. Se consideraron los subtipos de ARFID segun criterios del DSM-5: Apetito limitado, Ingesta selectiva y Miedo a la alimentación. Criterios de exclusión fueron ARFID de causa orgánica y/o trastornos generalizados del desarrollo. Para la recolección de datos se utilizaron el Child Eating Behaviors Questionnaire y el Child Feeding Questionnaire. Resultados: Se evidenció una asociación entre la estrategia alimentaria parental de presión para comer con la conducta de rechazo a los alimentos, y con conductas alimentarias infantiles de subalimen- tación emocional (p = 0,046), lentitud para comer (p = 0,016), rechazo frente a los alimentos (p = 0,019) y respuesta de saciedad (p = 0,003). Conclusión: Las conductas alimentarias frecuentemente percibidas por los padres con hijos diagnosticados con ARFID se relacionan con la dimensión de enfoque negativo hacia la comida, como respuesta de saciedad, rechazo alimentario, lentitud para comer y subalimentación emocional.
Interacciones entre las madres y sus bebés prematuros moderados durante la hospitalización
Authors: Mira Andrea , Coo Soledad , Bastías Rodolfo , González Ricardo
Published: December 2022

Los recién nacidos prematuros moderados son fisiológicamente inmaduros, su cerebro tiene que madurar y adaptarse al entorno extrauterino, lo que puede afectar su desarrollo neurológico. La interacción con sus cuidadores es crucial para su desarrollo, no obstante, estos pueden evidenciar problemáticas de salud mental como sintomatología depresiva y estrés parental. Objetivo: evaluar cómo la sintomatología depresiva y la percepción del estrés de las madres de bebés prematuros moderados durante la hospitalización puede afectar la interacción de la díada. Pacientes y Método: participaron 85 díadas. Durante la segunda y tercera semana de hospitalización, las madres completaron un cuestionario sociodemográfico, la escala de estrés parental y la Edinburgh postnatal depression scale (EPDS). La interacción madre-hijo fue evaluada y codificada con la Escala de Observación del Vínculo Madre-Bebé Hospitalizados. Resultados: las madres de bebés prematuros moderados hospitalizados en una unidad de neonatología pueden presentar una importante sintomatología depresiva y ésta se correlaciona con el estrés experimentado por la madre. El estrés parental y el ser pequeño para la edad gestacional evidenciaron una asociación negativa con las interacciones de las diadas. Conclusiones: El tener un bebé prematuro moderado puede impactar la salud mental de las madres y esto a su vez se relaciona con las interacciones que tienen con sus hijos/as. Del mismo modo se detectaron variables relacionadas con los bebés que también pueden disminuir las interacciones y contacto entre la diada.
Fenotipos clínicos del síndrome inflamatorio multisistémico pediátrico asociado a COVID-19 (SIM-C)
Authors: Alvarado-Gamarra Giancarlo , Del Aguila Olguita , Dominguez-Rojas Jesús , Chonlon-Murillo Kenny , Atamari-Anahui Noé , Borcic Aida , Sánchez Sandra , Huamani-Echaccaya Pablo , Garcés-Ghilardi Raquel , Estupiñan-Vigil Matilde
Published: December 2022

El síndrome inflamatorio multisistémico pediátrico asociado a COVID-19 (SIM-C) es una entidad poco frecuente y heterogénea, potencialmente fatal. Existen pocos reportes de casos de esta enfer- medad y de sus fenotipos en Latinoamérica. Objetivo: Describir las características de los fenotipos clínicos en pacientes hospitalizados en Lima, Perú, con diagnóstico de SIM-C. Pacientes y Método: Estudio retrospectivo de pacientes < 14 años con diagnóstico de SIM-C en el Hospital Nacional Edgardo Rebagliati Martins, Lima, Perú, abril 2020 - agosto 2021. Se registraron variables clínico- demográficas y microbiológicas. Según éstos, se clasificó a los pacientes con SIM-C en el fenotipo shock, enfermedad de Kawasaki (EK) sin shock, y el fenotipo fiebre e inflamación, analizando sus re- sultados clínicos. Resultados: Se incluyeron 58 pacientes, 32 (55,2%) presentaron el fenotipo shock, 15 (25,8%) el fenotipo EK sin shock, y 11 (19%) el fenotipo fiebre e inflamación. Del fenotipo shock, 17 presentaron EK. La edad media fue de 7 ± 3,5 años y el 67,2% eran varones. Las manifestaciones gastrointestinales y mucocutáneas predominaron en todos los fenotipos. La mortalidad fue de 3,5%. La frecuencia de aneurismas coronarios fue del 10,2%. La mayoría de los pacientes recibió trata- miento inmunomodulador y antiplaquetario. Los pacientes con fenotipo shock presentaron mayor disfunción hematológica, inflamatoria y cardiaca, con mayor frecuencia de insuficiencia respiratoria y ventilación mecánica invasiva. Conclusiones: En nuestra serie de casos, los pacientes con fenotipo shock fueron los más frecuentes y presentaron peores desenlaces clínicos. Se necesita una vigilancia activa de los fenotipos clínicos para un diagnóstico y manejo precoz con el fin de mejorar el pronós- tico en estos pacientes.
Penerapan Algoritma Reed Solomon Pada Sistem Informasi Absensi Pegawai Diskominfo Lahat
Authors: Firliani Ajeng Sri , Bakti Ahmad Mutatkin
Published: December 2022

Penggunaan sistem absen pada Diskominfo Kabupaten Lahat masih menggunakan sistem manual yaitu berupa tanda tangan dalam lampiran berkas. Sistem seperti ini tentunya memiliki kelemahan efisiensi, seperti efisiensi waktu, tenaga dan biaya. Tujuan penelitian ini melakukan pengembangan sistem informasi absensi pada dinas kominfo Lahat sehingga dapat meningkatkan efisien waktu dan kinerja pegawai diskominfo Lahat. Teknik yang digunakan untuk mengembangkan sistem ini adalah algoritma kode Reed Solomon, sebuah algoritma koreksi kesalahan yang biasa digunakan dalam kode QR QR-Code yang dilengkapi error correction akan tahan terhadap kerusakan data hingga batas tertentu. Algoritma Reed Solomon (RS) merupakan sebuah algoritma koreksi channel-coding yang berfungsi untuk mendeteksi dan memperbaiki sebuah paket data. Manfaat dari pembangunan sistem informasi absensi yang dapat mendukung proses absensi sangat diperlukan bagi pihak Dinas Komunikasi dan Informatika di Kabupaten Lahat. Sistem informasi berbasis web serta sudah menerapkan fitur QR-Code dengan didukuk algoritma Reed Solomon perlu diterapkan guna untuk meningkatkan efisiensi dan kinerja. Serta dapat membangun sebuah sistem informasi yang dapat membantu Dinas Komunikasi dan Informatika di Kabupaten Lahat dalam melakukan absensi, maka peneliti berniat membangun sebuah aplikasi yang berjudul Menerapkan algoritma Reed Solomon pada sistem informasi absensi karyawan Lahat Diskominfo. Hasil penelitian ini adalah sebuah sistem absensi yang sudah menggunakan QR-Code dan Algoritma Reed Solomon sebagai pendeteksi kesalahan pada code.
Sistem Deteksi Masker Menggunakan Algoritma Haar Cascade dalam Menghadapi Era New Normal
Authors: Suhirja Rudi , Jemakmun Jemakmun
Published: December 2022

Wabah covid-19 itu berasal dari sekelompok kasus pneumonia manusia di kota Wuhan, China, pada akhir Desember 2019. Covid-19 telah menjadi wabah di negara Indonesia sejak Maret 2020. Tidak hanya di negara kita, penyebaran virus covid-19 juga telah mempengaruhi setiap negara di dunia. Oleh karena itu saat ini berbagai tempat telah menerapkan aturan khusus untuk mematuhi protokol kesehatan. Salah satunya adalah pemerintahan gubernur (pub) 2020, di mana seluruh Sumatera bagian selatan harus mengikuti protokol kesehatan dengan memakai masker. Program sistem deteksi masker ini merupakan cara untuk mengatasi kesadaran masyarakat, khususnya mahasiswa di Universitas Bina Darma, bahwa betapa pentingnya penggunaan masker saat ini. dengan memanfaatkan kecerdasan buatan penulis membuat sistem untuk mendeteksi masker. Dalam menulis program ini, penulis menggunakan python dan menggunakan algoritma haar cascade. Algoritma haar cascade ini merupakan gagasan dari Paul Viola dan Michael Jones di tahun 2001, mereka mempresentasikan sebuah makalah yang disebut “Deteksi Objek Cepat Menggunakan Perangkat Tambahan Sederhana”. Dari percobaan menggunakan metode haar cascade, sistem dapat mendeteksi orang yang memakai masker dan tidak memakai masker. pengujian ini melibatkan gambar dan video secara real-time menggunakan bounding box.
Evaluasi Pengalaman Pengguna menggunakan Metode UX Honeycomb pada Aplikasi Pengenalan Wadai Banjar berbasis Augmented Reality
Authors: Subandi Subandi , Syahidi Aulia Akhrian , Redhani Ahmad Zairullah , Sayuti Akhmad
Published: December 2022

Salah satu daya tarik wisata di Provinsi Kalimantan Selatan adalah adanya aneka kue khas atau sering disebut sebagai Wadai Banjar. Wadai Banjar memiliki berbagai macam jenis dan biasanya para pengunjung akan berkuliner, maka melalui aplikasi yang diberinama AR-WadaiBanjar berbasis teknologi Augmented Reality (AR) yang telah dibangun direkomendasikan untuk mengenalkan macam-macam jenis Wadai Banjar tersebut seperti nama, harga, rekomendasi toko penjual, beserta resep dari pembuatan Wadai Banjar tersebut. Tujuan dari penelitian ini adalah untuk mengevaluasi pengalaman pengguna aplikasi AR-WadaiBanjar yang telah digunakan oleh para pengguna. Metode yang digunakan adalah UX Honeycomb, yang memiliki tujuh aspek untuk menilai pengalaman pengguna dari suatu aplikasi. Sebanyak 100 orang pengguna yang merupakan responden dihadirkan untuk melakukan penilaian pengalaman pengguna terhadap aplikasi tersebut. Hasil penelitian menunjukkan bahwa aplikasi AR-WadaiBanjar memiliki rata-rata nilai UX Honeycomb sebesar 4,49 dengan predikat Setuju. Artinya bahwa aplikasi AR-WadaiBanjar tersebut telah memenuhi aspek pengalaman pengguna dengan kategori Baik. Namun, diperlukan beberapa perbaikan untuk kekurangan dari aplikasi tersebut dengan meningkatkan jenis tulisan pada antarmuka pengguna, diperlukannya peta sebagai penunjuk lokasi toko penjual kue, peningkatan pengalaman pengguna yang lebih baik, dan kemampuan cerdas lainnya.
A case of acute ischemic stroke in moyamoya syndrome associated with Graves’ disease: Is there a role for anti-dsDNA antibodies?
Authors: Rafique Sumaira , Obaid Koutaiba Rida , Hassan Islam Ahmed
Published: December 2022

The coexistence of Moyamoya syndrome (MMS) and Graves’ disease (GD) is uncommon. Here, we report a case of a 41-year-old Filipino female, who presented with thyrotoxicosis and acute ischemic stroke. Based on her clinical presentation, cerebral computed tomography angiography, and thyroid function tests, she was diagnosed with MMS and GD. Her Burch-Wartofsky point scale score was 30, suggesting an impending thyroid storm. Antithyroid therapy was started with her neurological status deterioration initially, but after controlling the thyroid storm, the patient’s neurological status stabilized. She remained stable till she travelled to her country. We hypothesized that MMS in a patient with GD is mediated through anti-dsDNA antibodies, by altering key biological mechanisms, that is, inflammation, neutrophil extracellular traps, and apoptosis that drive a distinctive and coordinated immune and vascular activation. To the best of our knowledge, this is the first case of MMS associated with GD reported in Qatar. Keywords: Acute stroke, Graves’ disease, Moyamoya disease, Moyamoya syndrome, Thyrotoxicosis.
Knowledge, attitudes, and practices toward COVID-19 among Yemeni health care workers during the COVID-19 pandemic: A single-center survey in Al-Thawra Hospital, Ibb Governorate, Yemen
Authors: Al-Shoaibi Ismaeel , Abdo Basheer Ali , Shaddad Nashwan
Published: December 2022

Background and Objective: Health care workers (HCWs) are at the highest risk of contracting COVID-19, so their knowledge about the disease and their preventive attitude and practice toward COVID-19 are of concern. The present study aimed to assess the knowledge, attitudes, and practices of HCWs toward COVID-19 in Al-Thawra Hospital, Ibb Governorate, Yemen. Materials and Methods: We conducted a cross-sectional survey among HCWs in Al-Thawra Hospital, Ibb, Yemen, from January 1 to March 31, 2022. Results: Of the 80 participants, 50 (62.5%) were males and 30 (37.5%) were females with a mean age of 29.33±7.86 years. About 51.2% of respondents were aware that sneezing is a recognized symptom of COVID-19, while most were unaware of the extrarespiratory symptoms of the disease, such as diarrhea and confusion. About 28.7% of respondents believed that eating or contacting wild animals would result in infection by the COVID-19 virus, with the majority (71.3%) agreeing that wearing a well-fitting face mask effectively prevents COVID-19 infection. Approximately 48 respondents (60.0%) believed that washing hands could prevent contracting COVID-19, and only 31 (38.7%) agreed that if a patient shows signs and symptoms of COVID-19, they can confidently participate in that patient’s treatment. In response to avoid COVID-19, about 23 respondents (28.7%) had always gone to crowded places, and 35 (43.6%) had always worn face masks at every contact with patients, while only 14 (17.5%) of participants refrained from shaking hands and 37 (46.3%) always washed their hands before and after handling each patient. Conclusion: This study showed that most respondents have poor knowledge regarding the clinical picture of COVID-19 and its mode of transmission as most of them failed to detect an extrapulmonary manifestation of COVID-19 and were unaware of the possibility of transmission of the disease from wildlife. In addition, the attitude and preventive practice of the respondents were unsatisfactory in containing the transmission of the disease. Keywords: COVID-19, Health care workers, Knowledge, Attitude, Practices.
The prevalence of and risk factors for stroke among type 2 diabetes mellitus patients in Qatar: A hospital-based study
Authors: Karuppasamy Gowri , Shokri Shaikha Al , Sukik Aseel , Bacha Khaled Abdul-Kader
Published: December 2022

Background and Objectives: The complications of type 2 diabetes mellitus (T2DM) can occur in some organs, such as the heart, blood vessels, eyes, kidneys, and nerves. Stroke, one of such complications, is increasing every year. This study aims to investigate the prevalence of and risk factors for stroke among T2DM patients in Qatar. Methods: This was a secondary post hoc analysis of collected data from our previous study titled “Association of Vitamin D deficiency with dyslipidemia, glycemic control, and microalbuminuria in patients with T2DM in Qatar.” Results: The prevalence of stroke among our patients was 3.8%. A comparison between stroke and no-stroke groups showed a significant association between stroke and other diseases, namely, chronic kidney diseases (CKD) (p=0.007), coronary artery disease (CAD) (p=0.010), peripheral vascular disease (PVD) (p<0 p=0.044), p=0.041), p=0.006), p=0.003).> Conclusion: The prevalence of stroke among T2DM patients in Qatar was around 3.8%. The main risk factors were male gender, CKD, CAD, PVD, high HbA1c, prolonged duration of DM, and a high level of creatinine.
Extracorporeal membrane oxygenation: Is it another slower way to die?
Authors: Ibrahim Abdulsalam Saif , Raza Tasleem , Gibson Julia , Hassan Ibrahim Fawzy , Davidson Bruce L
Published: December 2022

Extracorporeal membrane oxygenation (ECMO) is anadvanced respiratory support that is being adoptedas salvage therapy in acute respiratory failure [1].The widespread use of this technology came as a result of alarge multicenter randomized UK study showing a survivalbenefit for severe acute respiratory distress syndrome (ARDS)patients transferred to an ECMO-capable specialist center [2].Moreover, improvements in clinical management and advancesin technology have gradually changed ECMO from a “rescuetherapy of last resort” to a type of standardized therapy for severeimpairment with clear indications and contraindications in manyspecialized centers around the globe, including for the treatmentof COVID-19 patients.
Tonsillolith – A rare cause of halitosis and odynophagia in a 9-year-old girl
Authors: Najm Maher Mohamad , Kayal Bashar Hasan , Najm Abdalmalek Mohamad , Shaaban Mohamad Zaher , Alyousef Lama Ahmad
Published: December 2022

Tonsil stones, also known as tonsilloliths or tonsiliths, areusually tiny white or yellowish mineralized structurespacked with organic debris and bacteria that develop inthe enlarged palatine tonsillar crypt. Tiny tonsillitis is commonlydetected in diagnostic imaging such as computed tomography(CT) and less so in panoramic radiography, with the prevalenceincreasing with age. Giant tonsilloliths are rare and most reportedcases have been in adults, with only a few cases reported in thepediatric population. In this report, we described a 9-year-old girlwho had suffered from halitosis for 6 months and odynophagiawith oropharyngeal foreign body sensation for 2 weeks and waslater diagnosed with a tonsil stone.