Pub Date : 2023-06-30DOI: 10.35429/jusd.2022.22.8.8.13
Miguel Isaac Sahagun-Valenzuela, I. A. Camacho-Ixta, Claudia Eréndira Vázquez-Torres
A ground roof is a sustainable element in which using a certain thickness of ground can reach the desired thermal and climatic comfort. On the northwestern border of Mexico, with an emphasis on desert areas, there is a need to compose solutions that measure the heat gain problems caused by climatic conditions. The heat gain is caused mainly by solar rays that occur in summer; the ground roof creates an insulating layer which helps to reduce the flow of heat, which in turn with the volume of ground helps maintain and lower stable temperatures. To evaluate the thermal performance of a ground roof, with the weather conditions of the metropolitan area of Mexicali, the simulation will be carried out. The ground roof are analyzed with different ground thicknesses and measurement periods are established, according to the specifications in standards ASTMC-1046-95, ASTMC1155-95. The thicknesses were simulated with the Ener-Habitat program. In the results it has been obtained that in a concrete cover the temperatures will be higher in contrast to the temperature of the environment and that of the ground roof.
{"title":"Ground roof as a sustainable element that improves the habitat of a space in the desert area of the northwestern border of Mexico","authors":"Miguel Isaac Sahagun-Valenzuela, I. A. Camacho-Ixta, Claudia Eréndira Vázquez-Torres","doi":"10.35429/jusd.2022.22.8.8.13","DOIUrl":"https://doi.org/10.35429/jusd.2022.22.8.8.13","url":null,"abstract":"A ground roof is a sustainable element in which using a certain thickness of ground can reach the desired thermal and climatic comfort. On the northwestern border of Mexico, with an emphasis on desert areas, there is a need to compose solutions that measure the heat gain problems caused by climatic conditions. The heat gain is caused mainly by solar rays that occur in summer; the ground roof creates an insulating layer which helps to reduce the flow of heat, which in turn with the volume of ground helps maintain and lower stable temperatures. To evaluate the thermal performance of a ground roof, with the weather conditions of the metropolitan area of Mexicali, the simulation will be carried out. The ground roof are analyzed with different ground thicknesses and measurement periods are established, according to the specifications in standards ASTMC-1046-95, ASTMC1155-95. The thicknesses were simulated with the Ener-Habitat program. In the results it has been obtained that in a concrete cover the temperatures will be higher in contrast to the temperature of the environment and that of the ground roof.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130191482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.35429/jusd.2022.23.8.18.30
J. F. Córdova-Manzo, Jesús Fausto Córdova-Escobedo, Felipe Mendoza-González, A. López-Liévano
Computer Program made in MATLAB that allows sustainable designs of lighting systems with Led lamps for different user requirements. The program requires as data the dimensions, reflectance, cavities and the desired lighting level of the work area to be illuminated and the type of LED luminaire to be used. The calculations are carried out in a deterministic, precise and exact way, using the lumens method and the Official Mexican Standard for lighting designs. The program provides information such as the total number of luminaires to be used, the calculated lux level, the electrical power density, among others, as well as a graph that indicates an adequate design for the accommodation and distribution of the lamps in the work area to be illuminated. , complying with the Lighting Design Standards. The program correctly performs each of the calculations and at the end delivers the most suitable design for the accommodation of the lamps and their distances. Correct lighting means achieving an optimal balance between human needs, architectural considerations and energy efficiency.
{"title":"Program for Sustainable Designs of led lighting systems","authors":"J. F. Córdova-Manzo, Jesús Fausto Córdova-Escobedo, Felipe Mendoza-González, A. López-Liévano","doi":"10.35429/jusd.2022.23.8.18.30","DOIUrl":"https://doi.org/10.35429/jusd.2022.23.8.18.30","url":null,"abstract":"Computer Program made in MATLAB that allows sustainable designs of lighting systems with Led lamps for different user requirements. The program requires as data the dimensions, reflectance, cavities and the desired lighting level of the work area to be illuminated and the type of LED luminaire to be used. The calculations are carried out in a deterministic, precise and exact way, using the lumens method and the Official Mexican Standard for lighting designs. The program provides information such as the total number of luminaires to be used, the calculated lux level, the electrical power density, among others, as well as a graph that indicates an adequate design for the accommodation and distribution of the lamps in the work area to be illuminated. , complying with the Lighting Design Standards. The program correctly performs each of the calculations and at the end delivers the most suitable design for the accommodation of the lamps and their distances. Correct lighting means achieving an optimal balance between human needs, architectural considerations and energy efficiency.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133312975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.35429/jusd.2022.23.8.1.7
M. Jordan-García, Vianney Hernandez-Martinez, Karla Yazmín García-Castillo
The present research project talks about the importance of the reuse of the material product of construction demolition. Whose objective is to elaborate a block through the reuse of the material product of demolition of the construction, with the purpose of diminishing considerably the waste of the rubble in clandestine garbage dumps. The research methodology developed consists of four phases to follow, within them there is a section of the separation of materials of the so-called rubble by type; followed by implementing the process of separation of reusable material to select the materials to be used for recycling and production of the block to replace the gravel and sand; and through the experimental method to perform tests type (4) and finish with the mechanical-physical tests the best type of block that can be used in the field of construction. Finally is to decrease the percentage of the amount of demolition debris as a replacement of aggregate in a final product such as a block, and to demonstrate that there is a real possibility of reuse in the world of construction materials.
{"title":"Reuse of demolition material from the construction industry: In a block","authors":"M. Jordan-García, Vianney Hernandez-Martinez, Karla Yazmín García-Castillo","doi":"10.35429/jusd.2022.23.8.1.7","DOIUrl":"https://doi.org/10.35429/jusd.2022.23.8.1.7","url":null,"abstract":"The present research project talks about the importance of the reuse of the material product of construction demolition. Whose objective is to elaborate a block through the reuse of the material product of demolition of the construction, with the purpose of diminishing considerably the waste of the rubble in clandestine garbage dumps. The research methodology developed consists of four phases to follow, within them there is a section of the separation of materials of the so-called rubble by type; followed by implementing the process of separation of reusable material to select the materials to be used for recycling and production of the block to replace the gravel and sand; and through the experimental method to perform tests type (4) and finish with the mechanical-physical tests the best type of block that can be used in the field of construction. Finally is to decrease the percentage of the amount of demolition debris as a replacement of aggregate in a final product such as a block, and to demonstrate that there is a real possibility of reuse in the world of construction materials.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127832589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.35429/jusd.2022.23.8.31.35
Alberto Calderón-Ruiz, María Guadalupe Aguilar-López, A. Martínez-Camacho, Everardo Vargas-Espinoza
In order to evaluate the adaptation of Ventura variety blueberry (Vaccinium corymbosum) cultivation under macro tunnel, an experiment was established at the Southwest Technological University of Guanajuato from January to April 2022. The study was established based on a completely randomized experimental design with five treatments and four repetitions. The treatments to be evaluated were four foliar fertilizers: Citan® (rooting hormones); formula 20-30-10 (N, P, K + Microelements); Bayfolan Forte® (N, P, K + Microelements); Demeter Poto® (K, B, Zn, P), applied weekly and an absolute control. The number of green sprouts developed three months after the first application was evaluated. The statistical analysis showed that there were no significant differences (p = 0.01) between the foliar fertilization treatments; however, an average of 13 to 16 green sprouts was counted, all with good development, vigor and physical appearance; largely due to foliar fertilization as a complement to nutrition via irrigation. The adaptation of the blueberry crop was achieved, as a recently introduced species in Valle de Santiago, under macro tunnel conditions, the microclimate and implemented agronomic management; however, it is necessary to improve some management aspects such as nutrition and above all, provide optimal protected conditions for cultivation.
为了评价文图拉品种蓝莓(Vaccinium corymbosum)在宏观隧道下栽培的适应性，于2022年1 - 4月在瓜纳华托西南工业大学建立了试验。本研究采用完全随机试验设计，5个处理，4个重复。评价的处理是4种叶面肥料:Citan®(生根激素);公式20-30-10 (N, P, K +微量元素);Bayfolan Forte®(N, P, K +微量元素);Demeter Poto®(K, B, Zn, P)，每周应用，绝对对照。第一次施用后3个月的绿芽数量进行了评估。统计分析表明，叶面施肥处理间差异不显著(p = 0.01);但平均有13 ~ 16个绿芽，发育、活力和外形都很好;主要是由于叶面施肥作为灌溉营养的补充。蓝莓作为圣地亚哥山谷的新引进品种，在宏观隧道条件、小气候和实施的农艺管理下实现了适应性;但在营养等管理方面仍需改进，最重要的是为栽培提供最佳的保护条件。
{"title":"Adaptation of blueberry crop (Vaccinium corymbosum) under macro-tunnel in Valle de Santiago, Gto.","authors":"Alberto Calderón-Ruiz, María Guadalupe Aguilar-López, A. Martínez-Camacho, Everardo Vargas-Espinoza","doi":"10.35429/jusd.2022.23.8.31.35","DOIUrl":"https://doi.org/10.35429/jusd.2022.23.8.31.35","url":null,"abstract":"In order to evaluate the adaptation of Ventura variety blueberry (Vaccinium corymbosum) cultivation under macro tunnel, an experiment was established at the Southwest Technological University of Guanajuato from January to April 2022. The study was established based on a completely randomized experimental design with five treatments and four repetitions. The treatments to be evaluated were four foliar fertilizers: Citan® (rooting hormones); formula 20-30-10 (N, P, K + Microelements); Bayfolan Forte® (N, P, K + Microelements); Demeter Poto® (K, B, Zn, P), applied weekly and an absolute control. The number of green sprouts developed three months after the first application was evaluated. The statistical analysis showed that there were no significant differences (p = 0.01) between the foliar fertilization treatments; however, an average of 13 to 16 green sprouts was counted, all with good development, vigor and physical appearance; largely due to foliar fertilization as a complement to nutrition via irrigation. The adaptation of the blueberry crop was achieved, as a recently introduced species in Valle de Santiago, under macro tunnel conditions, the microclimate and implemented agronomic management; however, it is necessary to improve some management aspects such as nutrition and above all, provide optimal protected conditions for cultivation.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127368825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.35429/jusd.2022.23.8.8.17
Erick Alonso Salazar-Molina, B. Castillo‐Téllez
Scientific evidence points to the excessive use of fossil fuels as responsible for climate change. Within the world's high energy consumption, electricity has been the element with the fastest-growing demand in the last 25 years. The increase in renewable energy generation sources has transformed the global electricity supply, positioning electricity as a response to environmental challenges. Unfortunately, thousands of projects proposed and developed over time either have not met the expectations or have not been implemented. One of the most important reasons for these inconveniences is that these projects do not include a comprehensive feasibility analysis and evaluation methodology. The current proposals mainly consider a technical-financial evaluation and leave aside other essential evaluations such as social, environmental, legal, political, economic, and technological, which, when not evaluated, negatively impact the project. Consequently, it is proposed to innovate the development of a comprehensive evaluation methodology that includes the essential variables of the social, environmental, political, legal, technical, technological, financial, economic, and commercial dimensions that mitigate the frequent problems that occur in photovoltaic solar energy
{"title":"Methodology for the photovoltaic solar energy projects evaluation","authors":"Erick Alonso Salazar-Molina, B. Castillo‐Téllez","doi":"10.35429/jusd.2022.23.8.8.17","DOIUrl":"https://doi.org/10.35429/jusd.2022.23.8.8.17","url":null,"abstract":"Scientific evidence points to the excessive use of fossil fuels as responsible for climate change. Within the world's high energy consumption, electricity has been the element with the fastest-growing demand in the last 25 years. The increase in renewable energy generation sources has transformed the global electricity supply, positioning electricity as a response to environmental challenges. Unfortunately, thousands of projects proposed and developed over time either have not met the expectations or have not been implemented. One of the most important reasons for these inconveniences is that these projects do not include a comprehensive feasibility analysis and evaluation methodology. The current proposals mainly consider a technical-financial evaluation and leave aside other essential evaluations such as social, environmental, legal, political, economic, and technological, which, when not evaluated, negatively impact the project. Consequently, it is proposed to innovate the development of a comprehensive evaluation methodology that includes the essential variables of the social, environmental, political, legal, technical, technological, financial, economic, and commercial dimensions that mitigate the frequent problems that occur in photovoltaic solar energy","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130894969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.35429/jusd.2022.22.8.14.20
Fátima Del Roció Becerra-Oliva, A. E. González-Cabrera, Rodrigo Cervando Villegas-Martínez, J. García-González
The city of Zacatecas, due to its geographical location, a city with little industry, neighboring the Tropic of Cancer and a height of the order of 2,492 above sea level, has the conditions for a study of the behavior of solar radiation and its possible potential use to transform it into other types of energy. The objective of this work was to have an irradiance database in the city of Zacatecas using CMP 22 Kipp & Zonen pyranometers from Campbell scientific, in order to satisfy the needs derived from radiation-related industry activities. The pinanometers are located at the Zacatecas_04 Solarimetric Station, which is located on the UAZ Siglo XXL Campus in building 6 of the Academic Unit of Chemical Sciences of the Autonomous University of Zacatecas (Lat: 22°46'21.01''N, Long: 102°38'37.14'') in the city of Zacatecas, Zac, and is part of the Mexican Solarimetric Network promoted by the Mexican Solarimetric Service of the Institute of Geophysics of the National Autonomous University of Mexico. The data was rearranged into hourly, daily and monthly averages. The average daily irradiance was 547 ± 5 W/m².
{"title":"Global solar radiation, assessed using a pyranometer placed on an inclined plane","authors":"Fátima Del Roció Becerra-Oliva, A. E. González-Cabrera, Rodrigo Cervando Villegas-Martínez, J. García-González","doi":"10.35429/jusd.2022.22.8.14.20","DOIUrl":"https://doi.org/10.35429/jusd.2022.22.8.14.20","url":null,"abstract":"The city of Zacatecas, due to its geographical location, a city with little industry, neighboring the Tropic of Cancer and a height of the order of 2,492 above sea level, has the conditions for a study of the behavior of solar radiation and its possible potential use to transform it into other types of energy. The objective of this work was to have an irradiance database in the city of Zacatecas using CMP 22 Kipp & Zonen pyranometers from Campbell scientific, in order to satisfy the needs derived from radiation-related industry activities. The pinanometers are located at the Zacatecas_04 Solarimetric Station, which is located on the UAZ Siglo XXL Campus in building 6 of the Academic Unit of Chemical Sciences of the Autonomous University of Zacatecas (Lat: 22°46'21.01''N, Long: 102°38'37.14'') in the city of Zacatecas, Zac, and is part of the Mexican Solarimetric Network promoted by the Mexican Solarimetric Service of the Institute of Geophysics of the National Autonomous University of Mexico. The data was rearranged into hourly, daily and monthly averages. The average daily irradiance was 547 ± 5 W/m².","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127523274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.35429/jusd.2022.22.8.1.7
Juan Luis Caro-Becerra, Ildefonso Galvez-López, Luz Adriana Vizcaíno-Rodríguez, Ramiro Luján-Godínez
Guadalajara, the second largest city in Mexico, has experienced accelerated urban growth since the year 2000, which has led to a change in land use and a decrease in recharge to aquifers, resulting in a considerable increase in points vulnerable to flooding. The positive and negative effects are two sides of the same coin, on the one hand, the proclaim excessive policies that seek to privatize water resources, and the other, to provide water to concessionaries in an excessive manner. The paradigm shift seen from the perspective of watershed management is precisely to solve environmental problems and associate them with urban hydrology projects, hydraulic infrastructure or a combination of these, with the aim of not modifying water courses and streams. The objective of this work is to determine peak flows for return period of 50 to 100 years, by means of probabilistic and statistical models and to identify through topographic cartography the annual periodic floods in the lower part of the basin, as results is to present a series of alternatives of solution through hydraulic works: channel rectification, silt removal works, to mention just a few.
{"title":"Flooding in high risk zones in the Metropolitan Area of Guadalajara, a paradigm shifts to watershed management and urban disasters","authors":"Juan Luis Caro-Becerra, Ildefonso Galvez-López, Luz Adriana Vizcaíno-Rodríguez, Ramiro Luján-Godínez","doi":"10.35429/jusd.2022.22.8.1.7","DOIUrl":"https://doi.org/10.35429/jusd.2022.22.8.1.7","url":null,"abstract":"Guadalajara, the second largest city in Mexico, has experienced accelerated urban growth since the year 2000, which has led to a change in land use and a decrease in recharge to aquifers, resulting in a considerable increase in points vulnerable to flooding. The positive and negative effects are two sides of the same coin, on the one hand, the proclaim excessive policies that seek to privatize water resources, and the other, to provide water to concessionaries in an excessive manner. The paradigm shift seen from the perspective of watershed management is precisely to solve environmental problems and associate them with urban hydrology projects, hydraulic infrastructure or a combination of these, with the aim of not modifying water courses and streams. The objective of this work is to determine peak flows for return period of 50 to 100 years, by means of probabilistic and statistical models and to identify through topographic cartography the annual periodic floods in the lower part of the basin, as results is to present a series of alternatives of solution through hydraulic works: channel rectification, silt removal works, to mention just a few.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114517440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.35429/jusd.2022.22.8.21.23
Moisés Molina-García, C. Melchor-Hernández, Jonathan Diaz-Cogco, Francisco J. Fuentes-Ramos
This investigation proposes a behavior that has a peltier cell, isolated with Styrofoam recyclable matter, as well as, analyze if the solar radiation that influences the actuation of said system for cooling. For this, they reproduce the haracteristics of a refrigeration chamber with a peltier cell.
{"title":"Ecological fridge prototype","authors":"Moisés Molina-García, C. Melchor-Hernández, Jonathan Diaz-Cogco, Francisco J. Fuentes-Ramos","doi":"10.35429/jusd.2022.22.8.21.23","DOIUrl":"https://doi.org/10.35429/jusd.2022.22.8.21.23","url":null,"abstract":"This investigation proposes a behavior that has a peltier cell, isolated with Styrofoam recyclable matter, as well as, analyze if the solar radiation that influences the actuation of said system for cooling. For this, they reproduce the haracteristics of a refrigeration chamber with a peltier cell.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130238112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.35429/jusd.2021.21.7.1.6
Ma. Angeles Enríquez-Pérez, J. Rosales-Davalos, V. Castrejón-Sánchez
Currently, the interest and the need to innovate new materials through the use of waste materials has grown, which meet similar or improved physical, chemical and mechanical characteristics of the materials they will replace. During the present investigation, Multilayer Containers (EM) and Low Density Polyethylene (LDPE) were collected, particulate agglomerates with different proportions were obtained, the apparent density, water absorption, mass, volume, heat behavior, angle were determined. contact, machining and compression tests. With the objective of evaluating the proportions p / p in the properties. The advantage of the material obtained is that they do not generate waste and are 100% recyclable. The 90:10 ratio is the one that could be used in the construction industry as false walls, with a modulus of rupture of 52.7 N / mm2 and a compressive stress of 32.9 MP, because it can be machined without altering its characteristics. -physical houses; While the 85:15 and 80:20 proportions, since they cannot be machined, could be used as a floating support with a photocatalyst catalyst, due to the fact that these agglomerates have dimensional stability when in contact with water.
目前，通过使用废料来创新新材料的兴趣和需求已经增长，这些材料符合他们将取代的材料的相似或改进的物理，化学和机械特性。在本研究中，收集了多层容器(EM)和低密度聚乙烯(LDPE)，获得了不同比例的颗粒团聚体，测定了表观密度、吸水率、质量、体积、热行为和角度。接触、加工和压缩试验。目的是评价p / p在性能中的比例。所获得的材料的优点是它们不会产生废物，并且是100%可回收的。90:10的比例是可用于建筑行业的假墙，其破裂模量为52.7 N / mm2，压应力为32.9 MP，因为它可以在不改变其特性的情况下进行机械加工。物理的房子;而85:15和80:20的比例，因为它们不能被加工，可以用作光催化剂催化剂的浮动支撑，因为这些团块在与水接触时具有尺寸稳定性。
{"title":"Obtaining particulate agglomerates from the recycling of multilayer containers and low density polyethylene","authors":"Ma. Angeles Enríquez-Pérez, J. Rosales-Davalos, V. Castrejón-Sánchez","doi":"10.35429/jusd.2021.21.7.1.6","DOIUrl":"https://doi.org/10.35429/jusd.2021.21.7.1.6","url":null,"abstract":"Currently, the interest and the need to innovate new materials through the use of waste materials has grown, which meet similar or improved physical, chemical and mechanical characteristics of the materials they will replace. During the present investigation, Multilayer Containers (EM) and Low Density Polyethylene (LDPE) were collected, particulate agglomerates with different proportions were obtained, the apparent density, water absorption, mass, volume, heat behavior, angle were determined. contact, machining and compression tests. With the objective of evaluating the proportions p / p in the properties. The advantage of the material obtained is that they do not generate waste and are 100% recyclable. The 90:10 ratio is the one that could be used in the construction industry as false walls, with a modulus of rupture of 52.7 N / mm2 and a compressive stress of 32.9 MP, because it can be machined without altering its characteristics. -physical houses; While the 85:15 and 80:20 proportions, since they cannot be machined, could be used as a floating support with a photocatalyst catalyst, due to the fact that these agglomerates have dimensional stability when in contact with water.","PeriodicalId":433492,"journal":{"name":"Revista de Desarrollo Urbano y Sustentable","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129783772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.35429/jusd.2021.21.7.17.23
Elid Silverio-Garrid, Carmen Jeannette Sampayo-Rodríguez, Aldo Hernández-Luna, Gregorio Castillo-Quiroz
This article presents the results obtained by implementing an application with an architecture based on the Internet of Things, applied to the production of red California earthworm, using an interface with which it is possible to monitor and collect data on temperature, humidity and PH with sensors that allow recording the necessary data. For the implementation, an experimental module was built in which the temperature and humidity variables were monitored, with the data obtained from the sensor measurements, the constant changes in temperature (between 20 to 29 ºC) and humidity (from 35% to 50%) were observed, This information made it possible to keep a weekly plan in which irrigation, aeration and compost mixing were attended to in a timely manner, reducing time, cost and human labor in the production of the red California earthworm and maintaining the reproduction of the red California earthworm in optimal conditions.
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