Evaluación y comparación de los materiales usados como elementos de divisoria interiores de vivienda, mediante la simulación y evaluación de sus residuos. Caso de usos en Sinaloa, México

Se analizó y realizó un comparativo de los consumos de materiales entre dos sistemas de separación de muros verticales interiores: tabique de cerámica y block hueco de mortero-cemento, profundizando en el estudio del ámbito de los residuos, así como la relación de rendimientos entre estos sistemas constructivos. Esto se obtuvo mediante el uso informático de valoración de gestión de residuos, con el programa Net Waste Tool, de la empresa inglesa WRAP. La evaluación se hizo para la partida de muros interiores de un proyecto de construcción de viviendas en serie de Los Mochis, Sinaloa, México. Con los criterios evaluados se pudo decidir cuál sistema de construcción es el más rentable desde varios puntos de vista, como son: sustentable, económico y de fácil manejo, dando como resultado que los muros hechos a base de block presentan las mejores características basadas en los criterios anteriores. (ANGLÈS) We analyzed and made a comparison of the consumption of materials between two separation systems interior vertical walls: a wall of ceramic and hollow mortar-cement block, deepening the study of the field of waste, as well as the ratio of yields between building systems. This was achieved through use of computer assessment of waste management, with the Net Waste Tool software, of the English company WRAP. The evaluation was made for the departure of interior walls of a housing construction project in series of Los Mochis, Sinaloa, Mexico. With the evaluated criteria could decide which system is the most profitable building from various perspectives, such as: sustainable, economical and easy to use, resulting in the walls made from block have the best characteristics based on the above criteria.Peer Reviewe

Evaluación y comparación de los materiales usados como elementos de divisoria interiores de vivienda, mediante la simulación y evaluación de sus residuos. Caso de usos en Sinaloa, México

Se analizó y realizó un comparativo de los consumos de materiales entre dos sistemas de separación de muros verticales interiores: tabique de cerámica y block hueco de mortero-cemento, profundizando en el estudio del ámbito de los residuos, así como la relación de rendimientos entre estos sistemas constructivos. Esto se obtuvo mediante el uso informático de valoración de gestión de residuos, con el programa Net Waste Tool, de la empresa inglesa WRAP. La evaluación se hizo para la partida de muros interiores de un proyecto de construcción de viviendas en serie de Los Mochis, Sinaloa, México. Con los criterios evaluados se pudo decidir cuál sistema de construcción es el más rentable desde varios puntos de vista, como son: sustentable, económico y de fácil manejo, dando como resultado que los muros hechos a base de block presentan las mejores características basadas en los criterios anteriores. (ANGLÈS) We analyzed and made a comparison of the consumption of materials between two separation systems interior vertical walls: a wall of ceramic and hollow mortar-cement block, deepening the study of the field of waste, as well as the ratio of yields between building systems. This was achieved through use of computer assessment of waste management, with the Net Waste Tool software, of the English company WRAP. The evaluation was made for the departure of interior walls of a housing construction project in series of Los Mochis, Sinaloa, Mexico. With the evaluated criteria could decide which system is the most profitable building from various perspectives, such as: sustainable, economical and easy to use, resulting in the walls made from block have the best characteristics based on the above criteria.Peer Reviewe

Influence of Size on the Microstructure and Mechanical Properties of an AISI 304L Stainless Steel—A Comparison between Bulk and Fibers

In this work, the mechanical properties and microstructural features of an AISI 304L stainless steel in two presentations, bulk and fibers, were systematically studied in order to establish the relationship among microstructure, mechanical properties, manufacturing process and effect on sample size. The microstructure was analyzed by XRD, SEM and TEM techniques. The strength, Young’s modulus and elongation of the samples were determined by tensile tests, while the hardness was measured by Vickers microhardness and nanoindentation tests. The materials have been observed to possess different mechanical and microstructural properties, which are compared and discussed

Delayed colorectal cancer care during covid-19 pandemic (decor-19). Global perspective from an international survey

Background The widespread nature of coronavirus disease 2019 (COVID-19) has been unprecedented. We sought to analyze its global impact with a survey on colorectal cancer (CRC) care during the pandemic. Methods The impact of COVID-19 on preoperative assessment, elective surgery, and postoperative management of CRC patients was explored by a 35-item survey, which was distributed worldwide to members of surgical societies with an interest in CRC care. Respondents were divided into two comparator groups: 1) ‘delay’ group: CRC care affected by the pandemic; 2) ‘no delay’ group: unaltered CRC practice. Results A total of 1,051 respondents from 84 countries completed the survey. No substantial differences in demographics were found between the ‘delay’ (745, 70.9%) and ‘no delay’ (306, 29.1%) groups. Suspension of multidisciplinary team meetings, staff members quarantined or relocated to COVID-19 units, units fully dedicated to COVID-19 care, personal protective equipment not readily available were factors significantly associated to delays in endoscopy, radiology, surgery, histopathology and prolonged chemoradiation therapy-to-surgery intervals. In the ‘delay’ group, 48.9% of respondents reported a change in the initial surgical plan and 26.3% reported a shift from elective to urgent operations. Recovery of CRC care was associated with the status of the outbreak. Practicing in COVID-free units, no change in operative slots and staff members not relocated to COVID-19 units were statistically associated with unaltered CRC care in the ‘no delay’ group, while the geographical distribution was not. Conclusions Global changes in diagnostic and therapeutic CRC practices were evident. Changes were associated with differences in health-care delivery systems, hospital’s preparedness, resources availability, and local COVID-19 prevalence rather than geographical factors. Strategic planning is required to optimize CRC care