bluuebunny/crossref_metadata_2025 huggingface dataset:
Hydrodynamic analysis of different impellers used in the stir casting process
Authors: Pérez-Pérez Arnulfo , Martínez-Vázquez J. Merced , Rodríguez-Ortiz Gabriel , García-Duarte Oscar Enrique
Published: June 2021

In this work, the hydrodynamic behavior of four types of impellers used in the manufacture of metal matrix composites (MMC) through the stir casting process is analyzed, in order to determine which of them is adequate to generate a uniform flow in the metal. Liquid and thereby achieve a uniform distribution of reinforcing particles. The impellers analyzed are the belt type, the vane type, the propeller type and the turbine type. As a first part, the parameters of each one of them were determined to later carry out the modeling in SolidWorks. Some properties of liquid aluminum were also determined, such as density and viscosity for a melting temperature. These characteristics were assigned in the software used. As results, the flow velocities and turbulences that occur with each impeller were obtained, being the propeller-type impeller the one that shows a more uniform distribution in terms of velocities.
Causes of poor management of the safety and hygiene program and compliance with STPS regulations
Authors: Rivera-Cisneros Miguel Ángel , Ruiz-Esparza-Ochoa Sandra , Murillo-Soto Sergio , Ramírez-Silva Macario Alejandro
Published: June 2021

This article presents results of the investigation that was applied to 17 companies in the city of León Guanajuato that requested support to establish the Safety and Hygiene plan in their organizations, its purpose is to identify the causes of poor management of the safety and hygiene program and attention to the regulations of the Ministry of Labor and Social Welfare (STPS). To carry out the investigation, information was collected through checklists in accordance with the STPS Official Mexican Standards (NOM), analysis tools were applied to identify the problem and a table was prepared to explain the causes. The result of the investigation revealed the main causes of the deficient management of the safety and hygiene program and compliance with the STPS regulations.
Management of micro and small businesses directed by women in Huejutla de Reyes, Hidalgo
Authors: Herrero Laura , Espinosa Abraham , Romero Carmina , Rivera Claudia
Published: June 2021

The objective of this research is to analyze the level of functionality of the management of micro and small companies directed by women, through evaluating their processes with a systemic approach, which is composed as inputs of the variables inputs of the process, system processes and system results. The study included a representative sample of 327 companies. The information was collected through an instrument that includes 109 items on a five-level Likert-type scale applied by 180 students, previously trained for the application, as well as for data capture on a digital platform. The validation of the information generated in these two activities was validated by the present authors. Specifically, the variable with the best performance is production-operation (process) with a value of 4.2, where it is reflected that companies focus on the quality of their products, taking care of delivery times, as well as satisfaction of customers. On the other hand, the variable scope in sales is the one that shows the largest area of opportunity with a value of 3.0, this has to do with the expansion of sales outside its local sphere.
The importance of emotional capital in organizations
Authors: Gutiérrez-Ocampo Verónica , Delgado-Reyes Sergio Carlos , Silva-Díaz Virginia
Published: June 2021

Within the organizations we work with the personnel in the different areas, who are the core part so that the Company can offer its products or services, in the course of work as human beings we face many problems with the personnel that we interact for not manage our emotions in our work and social environment, causing our environment to become chaos and affect the company or organization where we work. Through Emotional Capital, personal performance, communication and therefore the work environment cab be optimized. The staff will not fear being fired from their job but will fell part of it and will be motivated by working and this will reduce absenteeism and will be motivate by working, and this will reduce absenteeism and turnover. Another result is to increase people’s selfe-steem, which will be reflected in their attitudes because they will have a positive trend. This will generate greater adaptability to the processes of change because fear and uncertainty will be managed. With this model you can also facilitate processes.
Effective application of the APQP quality tool in Pull Back Car toy assembly processes
Authors: Bones-Martínez Rosalia , Soto-Leyva Yasmin , Santos-Osorio Arturo
Published: June 2021

The current Mexican market for the production and assembly of toys (Pull back car) demands ever higher productivity, quality, cost and delivery rates, complying with defined production requirements, as the market is becoming larger and of course competitive. For their part, companies have the need to continually launch new models to stay competitive. The current procedure is based on project management through a recognized procedure in the sector, such as APQP (Advanced Product Quality Planning), based on the implementation of a series of key management tools for DNP. The research carried out characterized the current context of toys for the development of new parts in the local toy sector of the Meccano company, in the Huauchinango Puebla region. An operational model proposal is made for the Pull back car toy assemblers, in order to improve performance in the activities of the Meccano company.
Solutions and strategies of Nezahualcoyotl´s business before the pandemic
Authors: Gutiérrez-Zepeda Martha del Pilar
Published: June 2021

This work helped us to understand the problems faced by businesses in the Nezahualcóyotl city and the metropolitan area in order to generate the appropriate strategies to help them to increase sales without large investments,for this purpose a non-experimental research was carried out with a quantitative approach and a descriptive design taking into account a probabilistic sample of 370 surveys randomly with a confidence interval of 95% and a single error of 5%, the data collection instrument is a structured questionnaire with closed questions for a greater objectivity and to ensure that the collection instrument was appropriate it was carried out a pilot test of 10% of the sample , it was in order to consider that the interpretation of the questions were appropriate, when the final questionnaire was applied the result was that the 41% of respondents were from Neza, besides it telling us that only 8% of traders received help according to financial support programs for companies and in relation to strategies that most generated a sales increase, 45% of businesses use home deliveries and 53% tell us that they advertise through social media. On the other hand, it is proposed that Facebook will be the social network that help them to spread their products in addition to sending stories related to them so that they had a better use and to create loyalty of the product in addition to home delivery with sanitary and safe conditions established by the Health sector to provide confidence to the customer. Thanks to this project, traders who can read thisproject will have a better view of the solutions they may have to move forward and not to be part of that 35% of bisinesses to close because of the pandemic.
Effect of Pseudomonas rhodesiae GRC140 on Cucumis sativus L. seedlings with and without Cadmium
Authors: Rolón-Cárdenas Gisela Adelina , Hernández-Morales Alejandro , Arvizu-Gómez Jackeline Lizzeta , Carranza-Álvarez Candy
Published: June 2021

Pseudomonas rhodesiae GRC140 is an endophytic bacterium isolated from the roots of Typha latifolia collected in a Cd-contaminated site. This bacterium has biochemical abilities similar to those exerted by plant growth-promoting rhizobacteria. Moreover, it has been shown that P. rhodesiae GRC140 improves the growth of Arabidopsis thaliana seedlings in the absence and presence of Cd. The aim of this work was to determine the effect of P. rhodesiae GRC140 in Cucumis sativus L. growing in nutritive medium with and without Cd. For this, cucumber seeds were superficially disinfected and exposed to a suspension of P. rhodesiae GRC140. Inoculated seeds were placed in a nutritive medium with and without Cd, then were incubated at 28 oC for eight days. After incubation, seedlings were recovered and determined the length of the primary root, the number of roots per plant, hypocotyl length, and the fresh weight. The results showed that P. rhodesiae GRC140 negatively affects the growth of C. sativus L. seedlings grown in the absence of Cd. On the other hand, in Cd-exposed seedlings, P. rhodesiae GRC140 improves the growth of C. sativus L. These results suggest that P. rhodesiae GRC140 decreases the deleterious effect of Cd in C. sativus L.
Effect of inoculation of Bacillus strains on flowering of carnation (Dianthus caryophyllus)
Authors: García-Barajas Margarita Guadalupe , Hernández-Morales Alejandro , Chávaro-Ortíz María del Socorro , Pacheco-Aguilar Juan-Ramiro
Published: June 2021

The carnation flower (Dianthus caryophyllus) is one of the most accepted and distributed worldwide, for its production, fertilization and the application of phytohormones have been optmized, thereby seeking to improve flower quality. However, little has been tested on the effect of the application of plant growth promoting bacteria. In the present work, carnation plants cv. Lilliput, were inoculated with 5X107 cells of Bacillus megaterium M6 and Bacillus subtilis P12, both individually and in interaction (M6 x P12), registering agronomic parameters related to flowering. The results showed that none of the inoculations had an effect on the percentage of flowering plants, neither on the height nor the diameter of the flower, only P12 increased flower number per plant by 38 %, compared to the control without inoculation. Being the period between 96 and 127 days after transplantation (dat), where tha highest number of total flowers was recorded (70) with respect to the other treatments (M6:36, M6 x P12: 24 and control: 32). In conclusion, Bacillus subtilis P12 has a promoter activity to improve the flowering of carnation plants.
Design and construction of a prototype for the analysis of vibrations in an induction motor for the detection of faults
Authors: Garrido Javier , Escobedo-Trujillo Beatris , Martínez-Rodríguez Guillermo Miguel , Silva-Aguilar Oscar Fernando
Published: June 2021

The contribution of this work is to present the design of a prototype integrated by an induction motor, a data acquisition system, accelerometers and control devices for stop and start, to generate and identify different types of faults by means of vibration analysis. in the domain: time, frequency or frequency-time, through the use of the Fourier Transform, Fast Fourier Transform or Wavelet Transforms (wavelet transform). In this prototype, failures can be generated in the induction motor such as: unbalance, different types of misalignment, mechanical looseness, and electrical failures such as broken bars or short-circuited rings, an example of a misalignment failure is presented to show the process of analysis and detection.
Sistema automatizado integral de información WEB como apoyo para la gestión de proyectos de estadía en la Universidad Tecnológica de Jalisco
Authors: González-Del Castillo Edgardo Emmanuel , López-Laguna Ana Bertha , Macias-Brambilla Rubén Hassem , Peña-Montes de Oca Adriana Isela
Published: June 2021

This article details the software engineering process applied to the AGORA comprehensive web information system in the business stays module, developed by Depto. of Administration and Software Development in collaboration with the Academic Body No.02 Social Responsibility, Sustainability and Integral Development for SMEs of the Technological University of Jalisco, in order to automate the process of stay belonging to the area of Business Linkage, using the methodology Agile Kanba and a cascading software life cycle model, also known as a linear life cycle. The project arises from the need to manage the work carried out by university students, who during their stay during the last semester in a company that they attend full time, develop a project related to their career, allowing them to enhance the skills that the professional market demands and obtaining real work experience. This WEB system will be used for management and as a central repository for stay projects, which have been part of the strategies that companies have implemented as continuous improvement. These projects require tools that allow safeguarding, controlling and evidencing the achievements obtained in their development and implementation within the sector. Derived from these needs, a new technological development was implemented, as a module attached to the AGORA system that automates processes for obtaining data, safeguarding, controlling and classifying projects, which will contribute to the work of those companies with which it is linked.
Lactacidemia during track day motorcycle racing competitions
Authors: Conte Marcelo , de Souza João Vitor , Azevedo Gustavo , Fernandes Victor
Published: June 2021

Introduction: Motorbike racing is one of the most dangerous sports due to high speeds, and it is highly demanding on racers both mentally and physically.
Objective: To verify the lactacidemia in motorbike racers before and after the Track Day race.
Method: Nine non-professional male riders (33 + 10.39 years) who practiced Track Day race were studied. Plasma lactate was obtained twice: 30 minutes before and 5 minutes immediately after the Track Day race. Results: There was a significant increase in lactacidemia (87.5%) after the 30-minute race (3.77 + 1.38 vs. 7.07 + 1.85 mmol).
Conclusion: Lactacidemia in amateur motorbike racers increased significantly after the Track Day race. These data reinforce the results of other studies, which consider motorcycling as a sport high in terms of anaerobic metabolism. Thus, physical trainers and motorcycle racers should adopt strategies to stimulate this metabolic pathway in specific training.
School chair design and key criteria from the users’ point of view
Authors: Rizman Herga Nataša , Fošnarič Samo , Kolar Andreja
Published: June 2021

People are becoming increasingly sedentary, including students attending the upper level of primary education. Due to school, young people spend a lot of time sitting in class and at home, which has a negative effect on their health, especially if their work environment, including school furniture, does not meet all the criteria in terms of physiological, psychological, and sociological guidelines for healthy furniture design.

Chairs, as school furniture, have been designed according to standards that take into account ergonomic compliance with the body height of pupils. Slovenian classrooms are equipped with standard conventional chairs. In our student-oriented research, we were interested in whether chairs designed according to the standard are suitable for adolescents and what, if any, additional criteria must be met from the users’ point of view.

The study included 192 upper level pupils (56.3 % girls and 43.7 % boys), age of 12.4 ± 1.7 years. The research is based on quantitative and qualitative methodology. The descriptive causal non-experimental method was supported by the observation method.

The results of the survey show that older students (81.6 %) are of the opinion that they spend more time at school than at home. Due to prolonged sitting, older students (55.3 %) report problems more often than younger ones (28.4 %). Nearly two-thirds of younger students (63.8 %) also believe they sit more in school than at home. The results show that prolonged sitting negatively affects their health or general well-being. Differences between the responses of older and younger pupils are statistically significant both in the opinion expressed regarding the location of sitting (p = 0.010) and in the reporting of problems due to prolonged sitting (p = 0.001). There are no statistically significant differences between the sexes in both groups of older and younger pupils. Pupils sit on hard, uncomfortable, conventional chairs that are not tailored to their needs. They want to use comfortable, soft, swivel chairs with backrests and armrests. The study has shown that, in addition to comfort, school chairs must provide dynamic or active sitting. The present study confirms that static and rigidly shaped school chairs do not offer support for active and restless youth. Therefore, chair design must change to meet the physical, ergonomic, cognitive, and social needs of their users.
Evaluación del impacto de la pandemia COVID-19 en el diagnóstico y tratamiento de pacientes con cáncer de mama tratadas en Clínica Alemana de Santiago.
Authors: Barriga Schneeberger Carolina Andrea , Camacho Neira Jamile , Román Lucero Eugenio , Retamal Rivas Tatiana , Cadiz Val Fernando , Gallegos Angulo Marcela , Carvajal Hausdorf Daniel
Published: June 2021

Introducción: Debido a la pandemia COVID-19 se ha visto un retraso en diagnósticos de enfermedades oncológicas, cambio de tratamientos y aumento en mortalidad. Objetivo: evaluar efectos de la pandemia en pacientes de Clínica Alemana de Santiago con diagnóstico reciente de cáncer de mama, comparadas con igual periodo año 2019.  Material y Método: estudio cuantitativo, retrospectivo, tipo descriptivo. Período 1 abril - 31 julio 2020 comparado con igual periodo de año 2019. Revisión de nuestra base de datos, comparando motivo de consulta, estadio y tratamiento. Análisis estadístico con programa STATA, test T student y test exacto de Fisher. Consideramos significativo p<0,05. Resultados: Total 156 pacientes, 70 (44,87%) consultaron en periodo señalado año 2020 versus 86 (55,13%) el 2019 (p=0,1). Edad promedio 55 años versus 58 (p=0,38). Consulta por nódulo palpable de mama, 25 versus 29 (p=0,86). Hubo diferencias en pacientes que consultaron por antecedentes familiares de cáncer de mama, 0 versus 6 (p=0,033), y en pacientes con antecedente personal de cáncer de mama, 0 versus 6 (p=0,033). Consulta por control imagenológico fue 39 versus 53 (p=0,5). En época de pandemia hubo más tumores Her 2, 11 versus 2 (p=0,006). Por estadios, no hubo diferencia. Por tratamiento indicado, cirugía fue 49 pacientes versus 71 (p=0,85). Hormonoterapia neoadyuvante 7 versus 1 (p=0,058). Conclusiones: En periodo de pandemia hubo menor consulta por cáncer de mama. La mayoría por control imagenológico y lesiones palpables, sin diferencia en estos grupos entre ambos periodos. Hubo menos cirugías y más tratamientos con hormonoterapia neoadyuvante.
Primeras cirujanas de Chile
Authors: Pedrero Bustamante Pamela Nayibe , Rojas Rossel Karen , Pérez Sotomayor Lorena , Albornoz Garrido Claudia , Camacho Neira Jamile , Carrillo González Katya , Fernández Albornóz Macarena , Fonseca Salamanca Verónica , Plass Del Corral Ingrid , Rodríguez Poblete Carolina , Vargas Vargas Victoria
Published: June 2021

En el año 2020 las cirujanas chilenas se reunieron en torno a la necesidad de trabajar para solucionar varios problemas que aquejan a la labor quirúrgica de la mujer en nuestro país, desde la formación de pregrado en adelante. Algunos de estos problemas son la poca visibilidad de la mujer en cirugía y la falta de conocimiento de las cirujanas líderes y referentes del pasado y actuales. El objetivo de esta investigación fue indagar quienes habían sido las primeras cirujanas de Chile. La búsqueda fue difícil ya que la información en la internet es escasa, por lo que se recurrió a entrevistas tanto a discípulos como algunas de las primeras cirujanas tanto en su especialidad o región del país. La cronología muestra lo reciente que ha sido la llegada de cirujanas a algunas regiones o la escasa representatividad de cirujanas en algunas subespecialidades. Esto se puede entender por barreras legales y culturales que han tenido que enfrentar las mujeres desde el ingreso a la carrera de medicina hasta el poder desarrollar la especialidad en cirugía a lo largo de la historia de este país.
Baja incidencia y alta mortalidad por COVID-19 en Cirugía General durante la primera ola de la pandemia
Authors: Barranquero Alberto G , Ramos Diego , Ocaña Juan , Puerta Ana , Vilar Tabanera Alberto , Bajawi Mariam , Vaello Víctor , Juez Luz Divina , Núñez Jordi , Chiloeches Alba G , Pastor Paula , Santana Valenciano Ángela , Payno Elena , Muñoz Muñoz Paula , Fernández Cebrián Jose María
Published: June 2021

Introducción y objetivo:La infección por coronavirus (COVID-19) en pacientes intervenidos es causa de importante mortalidad postoperatoria, aunque su incidencia es variable. El objetivo primario fue evaluar la incidencia de COVID-19 en los pacientes intervenidos en nuestro Servicio de Cirugía General y Digestiva, durante el máximo impacto de la pandemia en España. El objetivo secundario fue evaluar la mortalidad perioperatoria y determinar los factores de riesgo para la infección por COVID-19.Material y métodos:Estudio observacional retrospectivo de pacientes consecutivos sometidos a Cirugía General y Digestiva con ingreso superior a 24 horas, del 1 de febrero de 2020 al 30 de abril de 2020 en un hospital terciario de Madrid, España.Resultados:Se analizaron 441 pacientes: 423 sin COVID-19 y 18 con COVID-19. Las características preoperatorias y operatorias fueron similares para ambos grupos, salvo por el grado ASA (American Society of Anesthesiologists).La incidencia de COVID-19 en los pacientes intervenidos fue del 4,1 %. La mortalidad postoperatoria fue elevada, del 22,2 % en pacientes con COVID‑19, frente a un 2,8 % en pacientes no COVID‑19 (p: 0,003). Los factores de riesgo para la infección por COVID-19 en los pacientes intervenidos fueron una estancia hospitalaria prolongada (OR: 1,035 [95 % CI: 1,007 ‑ 1,065]) y la reintervención quirúrgica (OR: 5,025 [95 % CI: 1,650 – 15,311]).Conclusión:Las intervenciones durante la pandemia de COVID-19 causaron una baja tasa de infección con elevada mortalidad postoperatoria. La intervención quirúrgica debe valorarse frente al riesgo adicional para el paciente en contextos de alta transmisión.
Resultados asociados con la realización de colecistectomía subtotal en un hospital de tercer nivel de Bogotá
Authors: Parra Puentes Juan Sebastian , Rodriguez Rosales Natalia , Peña Merchan Camilo Andres
Published: June 2021

Introducción: La colecistectomía laparoscópica es actualmente el gold standard en patología vesicular litiásica. Hay un grupo de pacientes que tiene un gran proceso inflamatorio que impide la identificación adecuada del triángulo de seguridad. Dado lo anterior, una alternativa es la realización de colecistectomía subtotal por laparoscopia, para reducir el riesgo de lesión de vía biliar. Objetivo: Describir los resultados clínicos y quirúrgicos en pacientes que se sometieron a la realización de colecistectomía subtotal laparoscópica en el Hospital Universitario Clínica San Rafael en el periodo comprendido entre febrero de 2015 y febrero de 2017. Material y método: Serie de casos, donde se realizó un análisis descriptivo para determinar la distribución de las variables, se utilizaron tablas de contingencia, pruebas Fischer según el caso y su distribución en número y normalidad. Resultados: Se obtuvo información de 28 pacientes, con un promedio de edad fue de 56,1 años, mayor proporción de hombres. En cuanto a las características clínicas se observaron los antecedentes de diabetes e hipertensión arterial. No hubo complicaciones ni sangrado intraoperatorio importantes. En resultados postoperatorios no se presentó lesión de vía biliar en ninguno, hubo 3 reingresos (10,7%) y hubo una reintervención relacionada con colección intraabdominal. Se reportó una mortalidad secundaria a neumonía. Conclusión: la colecistectomía subtotal es un procedimiento seguro en cuanto a la prevención de lesión de vía biliar
Enfermedad de Mondor y mamoplastías
Authors: Jury Santibañez Jorge Osvaldo , Jury Salinas Catalina Ignacia , Morales Olate Brian Adams , Jury Salinas Osvaldo Andrés
Published: June 2021

Objetivo: Revisar la incidencia de esta enfermedad en pacientes sometidos a mamoplastías en una clínica privada en el período de 11 años, con el fin de describir sus síntomas y signos, diagnóstico, tratamiento y evolución.Materiales y Método: Se estudiaron 355 mujeres que se sometieron a mamoplastías estéticas. Se excluyó aquellas cirugías reconstructivas secundarias a cáncer de mama y aquellas con otros antecedentes oncológicos previos. La información fue recolectada de las fichas clínicas.Resultado: Se analizan 710 mamas operadas en el período 2008-2018, de las cuales seis mamas (6/710) evolucionaron con enfermedad de Mondor (0,8%).El diagnóstico se realizó clínicamente. Todos los casos recibieron terapia antiinflamatoria oral y local, respondiendo favorablemente.Discusión: Existe poca literatura publicada al respecto. Casos bilaterales son menos reportados. Pareciera asociarse con cirugías del surco submamario y no está claro que requiera curación terapéutica.Conclusiones: La enfermedad de Mondor es infrecuente, puede presentarse secundario a mamoplastías, es de diagnóstico clínico y sólo tratamiento sintomático con evolución satisfactoria sin secuelas.
Evolución de los niveles séricos de proteína C-reactiva y procalcitonina tras resección hepática
Authors: Domínguez-Comesaña Elías , Domínguez-Fernández Santiago , Domínguez-Fernández Elías , Domínguez-Fernández Rubén , Quiroga-Veiga Nazaret
Published: June 2021

ObjetivoEvaluar la evolución de los niveles séricos de proteína C-reactiva y procalcitonina tras resección hepática.Materiales y métodosEstudio observacional prospectivo, con pacientes con diferentes tipos de resección hepática, sin infección ni complicaciones mayores postoperatorias. Los niveles de proteína C-reactiva y procalcitonina se midieron el día anterior a la cirugía y diariamente, hasta el 7º día, o hasta el alta, lo primero que ocurriera.ResultadosSe incluyeron 42 pacientes.  Los niveles de procalcitonina, a las 24 horas, correlacionaban significativamente con la duración de la operación (p=0,04).  A las 48 horas, los niveles de proteína C-reactiva fueron mayores en las resecciones hepáticas no lobares que en las lobares (p=0,049).  A las 24 horas, los niveles de procalcitonina aumentaron más en las hepatectomías mayores que en las menores (p=0,017). Los niveles de procalcitonina fueron significativamente menores en los pacientes con abordaje laparoscópico en los 4 primeros días.Discusión y conclusiónLa resección hepática produce un aumento de los niveles séricos de proteína C-reactiva y procalcitonina, pero con menor intensidad si el abordaje es laparoscópico. Los niveles séricos de proteína C-reactiva tienden a ser mayores en las hepatectomías menos extensas, mientras que los de procalcitonina tienden a ser mayores en las más extensas.
SÍNDROME DE RESECCIÓN ANTERIOR BAJA Y SU RELACIÓN CON LA CALIDAD DE VIDA: APLICACIÓN DE CUESTIONARIO EUROQOL-5.
Authors: Zambra Rojas Mauricio Andres , Bocic alvarez Günther Ronny , Sanguinetti Montalva Antonella , Abedrapo Moreira Mario Antonio , Llanos Bravo José Luis , Azolas Marcos Rodrigo , Diaz Beneventi Mauricio Javier , Rodriguez Castillo Tomas , Pruzzo Garate Matías , Bocic W Felipe
Published: June 2021

Introducción: Las cirugías con preservación de esfínter tienen como consecuencia el desarrollo de una disfunción defecatoria con diferentes grados, la cual es conocida como síndrome de resección anterior baja (LARS) y es medida con el cuestionario LARS Score.Objetivo: Determinar la asociación del cuestionario EuroQol-5 (calidad de vida) con los diferentes grados de LARS Score. Materiales y método: Estudio de tipo transversal, aplicando el cuestionario LARS Score y EuroQol-5 a pacientes operados por cáncer de recto medio y bajo, durante el periodo 2004-2017. Se realiza análisis demográfico y del tipo de cirugía. Para determinar asociaciones entre variables se utilizan diferentes pruebas estadísticas, considerando significativo un valor de p < 0,05. Resultados: Se encuestó a 54 pacientes, 62,16% hombres, promedio de edad 58,44 años, el 37,03% presentó LARS Mayor. Los índices promedio de calidad de vida para pacientes No LARS es 0,75, para LARS Menor es 0,69 y para LARS Mayor es 0,61, la diferencia entre índices presenta un valor p=0,246. 46,3% presenta problemas en actividades habituales. LARS Mayor presenta un Odd-Ratio de 3,8 y 4,7 para Dolor/Malestar y Angustia/Depresión respectivamente. 70% de los pacientes con LARS Mayor presentaron  resección total del mesorrecto (TME) y el 45% corresponde a menores de 65 años. Discusión: No existe diferencia estadísticamente significativa entre los índices de calidad de vida según LARS Score. LARS Mayor tiene mayor posibilidad de desarrollar algún grado de Dolor/Malestar y Angustia/Depresión. El porcentaje de LARS Mayor es acorde a lo publicado y la TME es uno de los factores de mayor impacto en del desarrollo de LARS. Conclusiones: El LARS Score se relaciona de manera no significativa con el índice de calidad de vida entregado por el cuestionario EuroQol-5D, existiendo una tendencia a disminuir la calidad de vida a medida que empeora el LARS.
La enfermedad diverticular hoy. Revisión de la evidencia.
Authors: Martínez Pérez Carolina , García Coret María José , Villalba Ferrer Francisco
Published: June 2021

La enfermedad diverticular es muy prevalente con gran repercusión económica y médica. A pesar de las múltiples guías para protocolizar el diagnóstico y tratamiento no existe unanimidad en su manejo.Hemos realizado una revisión actualizada con el objetivo de analizar los nuevos estudios de esta enfermedad, para manejarla adecuadamente y realizar el tratamiento más adecuado en cada momento.La enfermedad diverticular tiene un componente hereditario (40%) y presenta una relación directa con la dieta pobre en fibra, la obesidad, el consumo de carne roja, la inactividad, el alcohol y los AINEs. Por su clínica inespecífica, es difícil realizar un diagnóstico diferencial. La ecografía y el TC abdominal son métodos apropiados para el diagnóstico y se recomienda una colonoscopia de manera precoz (4ª-8ª semana) tras el cuadro agudo. La clasificación más seguida es la de Hinchey.En el tratamiento médico de la diverticulosis sintomática no se ha demostrado evidencia clara de ningún medicamento. La diverticulitis aguda no complicada se puede manejar ambulatoriamente y no es necesario el uso de antibióticos en pacientes sin factores de riesgo.En la diverticulitis complicada se tiende a un manejo conservador, aunque en el Hinchey III y IV el tratamiento es quirúrgico, recomendando la resección de la zona afecta y si es posible anastomosis con o sin estoma de protección. No se recomienda el lavado y drenaje en el Hinchey III. Hay que consensuar tratamiento de forma individualizada ya que no se recomienda tratamiento quirúrgico por el número de recurrencias ni por edad del paciente.
Resección duodenal distal: Análisis de nuestra experiencia con una cirugía infrecuente.
Authors: Ochoa Suazo Gabriela Susana , Crovari Eulufi Fernando , Briceño Valenzuela Eduardo
Published: June 2021

Introducción: La resección duodenal distal (RDD) es una técnica quirúrgica compleja e infrecuente usada para el tratamiento de patologías duodenales o extraduodenales, que no comprometen la papila duodenal mayor, siendo su indicación más frecuente la patología neoplásica. Material y Métodos: Serie de pacientes sometidos a RDD entre 2009-2020 en el Hospital Clínico UC. Resultados: Total 12 pacientes, mediana de edad 56 años. Diagnóstico preoperatorio: tumores primarios duodenales (4), tumores con compromiso duodenal por contigüidad (5) y patologías de urgencia (3). El abordaje fue abierto en 9 pacientes y laparoscópico en 3 (1 caso convertido). En 9 pacientes se resecó D3-D4, en 1 paciente incluyó parte de D2 y en 2, sólo D4. La anastomosis duodenoyeyunal fue manual en 10 casos, todas con ascenso transmesocólico del asa yeyunal. Hubo 33% (n: 4) de morbilidad, todos Clavien Dindo II y 8% de mortalidad (n: 1). No hubo filtración de la anastomosis duodenoyeyunal. En el seguimiento ninguno presentó complicaciones y 4 pacientes fallecieron por progresión oncológica. Conclusión: La principal indicación quirúrgica fue patología neoplásica y en nuestra serie no hubo morbilidad mayor ni filtración anastomótica.
Compatability Behaviour on Cold Formed Steel for I Section and C Section in Variable Parameters
Authors:   Department of Civil, Sri Krishna College of Technology, Coimbatore (Tamil Nadu), India., Logesh Mr. S. , Ramesh Mr. R. ,   Department of Civil, Sri Krishna College of Technology, Coimbatore (Tamil Nadu), India., Padmanaban Dr. I. ,   Department of Civil, Sri Krishna College of Technology, Coimbatore, (Tamil Nadu), India.
Published: June 2021

This Study represents compatibility on Cold formed steel in I-Section beams and C-section beams with variable length parameters was 1000mm, 1500mm, 2000 mm under simply supported end condition subjected to uniformly distributed loading. The Cold formed steel is of shell type in Numerical simulation is carried out using the Software ABAQUS. For validation the series of parameters studies have been carried out using the numerical model of different parameters, such as the effect of length, width, thickness. CFS I-Section steel in various thickness of 1mm, 2mm, 3mm and 4mm with same loading conditions. CFS C-Section steel in various uneven flange width such as 500mm at the top flange and bottom flange of different width such as 400mm, 300mm, 200mm respectively in variable lengths with various loading conditions and with the thickness of about 1mm. For both I-Section and C-Section Beams the Effective Length ranges, MISES(max and min) and deflections(max and min) were taken for the analyse of the Sections. This study gives the way of finding the effective Section by the analysis of behaviour of I-Section beam and C-Section beam through the deflection results in various length variations in the beam Section using the ABAQUS software for finding the Structural behaviour in the more accuracy manner by applying meshing more finer for the Element Section in the Analyse of beam. The loading condition and the supporting condition applied to the beam section in different loading for getting the effective Section. For further stability in effective section we can use different types of connection.
A Survey of RF Energy Harvesting Circuits
Authors:   Faculty of Engineering and Technology, University of Buea, Buea, Cameroon., Fumtchum Achille , Tsafack Pierre ,   Faculty of Engineering and Technology, University of Buea, Buea, Cameroon., Hutu Florin ,   Univ Lyon, INSA Lyon, INRIA, CITI, F-69621, Villeurbanne, France., Villemaud Guillaume ,   Univ Lyon, INSA Lyon, INRIA, CITI, F-69621, Villeurbanne, France., Tanyi Emmanuel ,   Faculty of Engineering and Technology, University of Buea, Buea, Cameroon.
Published: June 2021

The aim of this work is, on one hand, to review the state of the art of the architectures and diodes used in radio-frequency energy harvesting systems, the idea here is to review the most recent works, as well as their characteristics, which include frequency, type of diode used, topology, maximum efficiency and corresponding power, and on the other hand to carry out simulations to determine the most appropriate case for any further work in the field. After having determined the most common topologies, we used the main known radio-frequency diodes to characterize them in a first step, clearly a process of comparing the results of the simulations of the different topologies is done by initially considering an identical frequency. and afterward determine the effect of frequency band on their conversion efficiency.
Estimation of Glucose Levels in Blood Sample using A Biosensor
Authors:   Department of Electronics and Communication Engineering, Anil Neerukonda Institute of Technology and Sciences, Vishakapatnam (Andhra Pradesh), India., Rao G Manmadha , Prasad Gade Chaitanya ,   Department of Electronics and Communication Engineering, Anil Neerukonda Institute of Technology and Sciences, Vishakapatnam (Andhra Pradesh), India., Pavani K. ,   Department of Electronics and Communication Engineering, Anil Neerukonda Institute of Technology and Sciences, Vishakapatnam (Andhra Pradesh), India., Rao S Lakshaman ,   Department of Electronics and Communication Engineering, Anil Neerukonda Institute of Technology and Sciences, Vishakapatnam (Andhra Pradesh), India., Kumar B Prasanna ,   Department of Electronics and Communication Engineering, Anil Neerukonda Institute of Technology and Sciences, Vishakapatnam (Andhra Pradesh), India.
Published: June 2021

This paper discusses about estimation of glucose concentration in blood using a Triple pole Complementary split ring resonator (TP-CSRR) antenna. Glucose concentration in blood is the direct indicator of Diabetes disease. The designed microstrip antenna operates in range of 2-5 Ghz and has a resonance frequency of 3.35 Ghz when simulated. When the antenna is excited, blood acts as dielectric load to it. Hence the glucose concentration of blood affects the resonant frequency and amplitude at resonant frequency of the s21 parameter of the antenna. Using this information, we can estimate the glucose concentration of blood sample. Debye model was used to model the blood. It is effective in detecting glucose concentration of Type-2 diabetes (70-120 mg/dL). The amplitude sensitivity is 0.58 dB(mg/ml) and frequency sensitivity is 583 Mhz/(mg/ml).
The Effect of Job Stress and Job Satisfaction on Employee Performance through Commitment as an Intervening Variable (Case Study on Grabbike Drivers in Palembang City)
Authors:   Student Magister Management , Economic Faculty of Sriwijaya University, Palembang, Indonesia., Marzuki* Ismail , Hanafi Agustina ,   Lecturer of Magister Management, Economic Faculty, Sriwijaya University, Palembang Indonesia., Yuliani  ,   Lecturer of Magister Management, Economic Faculty, Sriwijaya University, Palembang Indonesia.
Published: June 2021

This study aimed to determine the effect of job stress and job satisfaction on performance through organizational commitment as an intervening variable in the study Grabbike driver Palembang. The sampling method was purposive sampling with a total sample of 100 respondents. The analysis technique used in this study is the Structural Equation Model (SEM). The results showed that job stress has a significant and negative direct effect on organizational commitment and performance. Job satisfaction has a significant and positive direct effect on organizational commitment and performance. Organizational commitment has a significant and positive influence on performance. Job stress has a significant effect on performance through organizational commitment. Job satisfaction has a significant effect on performance through organizational commitment.
Factors Affecting the Acceleration of Healing for COVID-19 Patients
Authors:   is a Doctoral Student of Technology and Vocational Education, Universitas Negeri Padang - Indonesia and Lecturer of the Study Program of Public Health, STIKes Payung Negeri Pekanbaru-Indonesia., Ningsih* Kursiah Warti , Giatman Muhammad ,   is a Senior lecturer/professors of Technology and Vocational Education, Universitas Negeri Padang-Indonesia., Kirana Desi Nindya ,   is a Lecturer of the Study Program of Midwifery, STIKes Payung Negeri Pekanbaru-Indonesia., Pramulia Rahmi ,   FS Lecturer of the Study Program of Public Health, STIKes Payung Negeri Pekanbaru-Indonesia., Martilova Dona ,   Lecturer of the Study Program of Midwifery, STIKes Payung Negeri Pekanbaru - Indonesia.
Published: June 2021

COVID-19 is a pandemic that has occurred since the beginning of 2020 which began in the city of Wuhan in China. In principle, the virus cannot enter the body if you have good immunity. Indonesia had reached the highest mortality rate of around 9.11 percent on Saturday, April 4, 2020. The purpose of this study was to find out what are factors in accelerating the healing of COVID-19 patients. This type of research is quantitative analytic with a correlational research design using a cross-sectional study approach. This research will be conducted in the isolation room of the Kampar River Puskesmas inpatient in October-November. The results of the study stated that there was a relationship between sex and the acceleration of healing of COVID-19 patients with a p-value of 0.013 <0.05, there was no relationship between community support and accelerated healing of COVID-19 patients with a p-value of 0.079> 0.05, there was a relationship between family support. with the acceleration of healing of patients COVID-19 with p-value 0.009> 0.05, there is a relationship between mental burden by accelerating patient recovery COVID-19 with p-value 0.011 <0.05, there is a relationship between degenerative diseases by accelerating patient recovery COVID-19 with p-value 0.001 <0.05 and there is a relationship between comorbidities and the acceleration of healing in COVID-19 patients with a p-value of 0.029 <0.05.
Functional Information System using Office Laravel Framework in BKPSDM Pekanbaru City
Authors:   Doctoral student of Technology and Vocational Education, Universitas Negeri Padang-Indonesia and Lecturer of STMIK Hang Tuah Pekanbaru-Indonesia., Sabna* Eka , Machdalena  ,   Lecturer of Pekanbaru College of Technology., Suryani Des ,   Doctoral student of Technology and Vocational Education, Universitas Negeri Padang-Indonesia and Lecturer of UIR Pekanbaru-Indonesia, Ambiyar  ,   Senior lecturers/professors of Technology and Vocational Education, Universitas Negeri Padang-Indonesia, Rizal Fahmi ,   Senior lecturers/professors of Technology and Vocational Education, Universitas Negeri Padang-Indonesia.
Published: June 2021

Functional Position Information System is an information system application that is indispensable in Pekanbaru City Personnel and Human Resources Development Agency. This information system has not been implemented so that it needs to be designed and developed to determine its success and effectiveness. This becomes something very interesting to be the object of research, using quantitative research methods and using primary and secondary data as samples. Primary data were taken from field surveys, namely carrying out observations, interviews, case studies of selected samples. Secondary data were taken from available data by carrying out a documentation study at the Pekanbaru City Personnel and Human Resources Development Agency as needed. The data obtained were then analyzed descriptively with the waterfall modeling method. The results of hypothesis testing indicate that the functional position information system has not yet been implemented as an effort to facilitate civil servants to obtain services and information related to functional positions. Hypothesis testing also shows that there is no difference in the acceptance of the information system based on the diversity of functional groups and the length of their service life. For this reason, every civil servant who holds a Functional Position is obliged to take care of a Decree application at the Human Resources Development Personnel Agency Office, abbreviated as BKPSDM Pekanbaru City and to facilitate this, is designed a system called the Functional Position Information System Using the framework Laravel so that the user can easily easy to understand and use the application in the form of a website.
Urban Poverty and Vulnerability: Literature and Perspective
Authors:   Assistant Professor, School of Management (UG) MIT – WPU S. No. 124, Paud Road, Kothrud, Pune (Maharashtra), India., Deo* Dr. Shilpa
Published: June 2021

The Government of India has been taking various steps towards identification of the poor (and vulnerable through the Socio Economic Caste Census) and measurement of poverty with the help of various Expert Groups right from the Task Force that was set up in 1962 to the Task Force on Poverty Elimination of the NITI Aayog. There have been many researchers as well who have been suggesting the ways in which the poor and vulnerable can be identified and poverty can be measured besides the suggestions given by the Expert Groups. However, it may be considered as a ‘national shame’ if we are unable to identify the needy even after 75 years of independence. Through the review of around 100 books, research papers and articles, an attempt has been to understand the strengths and shortcomings of suggested ways to identify the poor and vulnerable and suggest a comprehensive methodology to identify the needy. Unless we are able to identify the poor and vulnerable sections of society correctly, planning and implementing poverty alleviation programmes for “ending poverty in all its forms everywhere”1 would be a futile exercise!
Causes and Impacts of Conflicts in Construction Projects: A Viewpoint of Kenya Construction Industry
Authors:   Department of Construction Management, Jomo Kenyatta University of Agriculture and Technology (JKUAT), Juja, Kenya., Mbatha* Samuel Kiilu
Published: June 2021

Construction projects are predisposed to conflicts. This is attributed to the multiplicity of personnel handling the various phases of the projects. Empirical evidence from previous studies shows that if not properly managed, conflicts affect among others, the project's productivity loss, inadequate time and cost performance levels, loss of profit, and damage in business relations. Identifying the significant causes and major potential impacts of conflicts is crucial to reducing the risk of conflict occurrence in projects. Hence, this study was focused on explaining the classification of conflicts, identifying and assessing their causes and impacts in construction projects in Kenya grounded on the perception of project consultants and contractors. To accomplish the study objectives, a questionnaire was designed to collect data on the experiences of construction professionals on the causes and impacts of conflicts during project implementation. A total of 122 consultants and contractors provided responses, which were analyzed. A total of 42 significant causes of conflicts in the Kenyan context were identified. Based on the survey results, delay in progress payments by the client was identified as the most significant cause of conflicts, followed by poor site management and supervision. The survey also revealed that conflicts can emerge from any of the stakeholders, with contractors contributing the most, accounting for 14 of the 42 conflict factors identified. The study ranked the impacts of these conflicts using the Relative Severity Index (RSI). The results indicated that the biggest impact of conflicts on construction projects is the loss of profitability and perhaps business viability, and delays in project delivery. Expert opinions regarding the best practices and strategies for improving project harmony through effective conflict management were reviewed and grouped into five classes namely; project documentation, stakeholder involvement, value-based procurement, and adoption of ICT. It is concluded that the project manager should develop his leadership role by the adoption of these strategies so that he can use his position to effect positive conflict management on his team members. Furthermore, during the life cycle of the construction project, special attention should be given to the identified cause factors to avoid or effectively manage conflicts. These results, taken together, support clear guidelines on the need for proactive financial obligation on the client-side, as well as the hiring of experienced project professionals. Implementing these suggestions would reduce the risk of conflicts arising during building projects.