ECORFAN Journal Republic of Nicaragua最新文献

Study on the generation and composition of household solid waste in Ciudad Valles, S.L.P. 城市谷地生活垃圾的产生及组成研究

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-12-31 DOI: 10.35429/ejrn.2022.15.8.22.30

Dulce Carolina Acosta-Pintor, Eleazar Vidal-Becerra, Cuitláhuac Mojica-Mesinas, Yuridia CÓRDOVA-OLGUÍN

{"title":"Study on the generation and composition of household solid waste in Ciudad Valles, S.L.P.","authors":"Dulce Carolina Acosta-Pintor, Eleazar Vidal-Becerra, Cuitláhuac Mojica-Mesinas, Yuridia CÓRDOVA-OLGUÍN","doi":"10.35429/ejrn.2022.15.8.22.30","DOIUrl":"https://doi.org/10.35429/ejrn.2022.15.8.22.30","url":null,"abstract":"The problem of the generation and composition of household Urban Solid Waste (RSU) in Ciudad Valles, San Luis Potosí was addressed. The information obtained could be used in making decisions about management and treatment for final disposal. To define the dwellings under study, the city was divided into socioeconomic strata with the support of the kmz tool, to visualize the Basic Geostatistical Areas (AGEB) according to the percentage of poverty. The generation of waste in the study area was determined through the NMX-AA61-1985 standard. For seven days, the selected dwellings were sampled, the quartering method was applied to the waste generated by means of the NMX-AA-15-1985 standard, and the samples were obtained for the physical-chemical analyses. The quantification of the by-products was carried out according to the NMX-AA-22-1985 standard. The organic fraction residues were the predominant in all the strata, being the medium marginalization stratum (EMM) the one that presented the highest percentage (49%). The physical-chemical characterization of the residues showed a moisture content of 52.48% and organic matter of 61.28%, results derived from the high composition of food residues that provide a higher percentage of water.","PeriodicalId":334241,"journal":{"name":"ECORFAN Journal Republic of Nicaragua","volume":"58 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":"117008414","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}

引用次数: 0

Lipopeptide produced by the bacteria Bacillus mojavensis with activity against the phytopathogenic fungus Colletotrichum gloeosporioides Penz & Sacc var. Minor Simmonds 细菌mojavensis产生的具有抗植物病原菌炭疽菌(Colletotrichum gloeosporioides Penz & Sacc var. Minor Simmonds)活性的脂肽

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-12-30 DOI: 10.35429/ejrn.2022.15.8.8.13

T. López-Gutiérrez, B. Sarabia-Alcocer, E. Gutiérrez-Alcántara, B. Aké-Canché

引用次数: 0

Characterization of Paenibacillus spp. CBRM17 as antagonist of phytopathogenic fungi and growth promoter of Capsicum chinense Jacq. Paenibacillus spp. CBRM17作为植物病原真菌拮抗剂和辣椒生长促进剂的研究。

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-12-29 DOI: 10.35429/ejrn.2022.15.8.14.21

Miguel Ángel Mejía-Bautista, J. Cristóbal-Alejo, J. Pacheco-Aguilar, A. Reyes-Ramírez

{"title":"Characterization of Paenibacillus spp. CBRM17 as antagonist of phytopathogenic fungi and growth promoter of Capsicum chinense Jacq.","authors":"Miguel Ángel Mejía-Bautista, J. Cristóbal-Alejo, J. Pacheco-Aguilar, A. Reyes-Ramírez","doi":"10.35429/ejrn.2022.15.8.14.21","DOIUrl":"https://doi.org/10.35429/ejrn.2022.15.8.14.21","url":null,"abstract":"Studies of the plant-microorganism relationship have made it posible to explore the potential of rhizospheric bacteria to improve the health and quality of plants. In the present study, Paenibacillus sp. CBRM17 was characterized in vitro for its ability to inhibit the growth of phytopathogenic fungi that cause diseases in horticultural crops in the tropics, finding a reduction in the mycelial growth of Alternaria, Fusarium and Helmintosphorium strains in the range of 50 to 70 %, additionally its biochemical properties related to the promotion of plant growth were characterized, registering the production of 0.36 µg/mL of indole acetic acid (IAA), the solubilization of tricalcium phosphate with solubilization index (SI) of 2.41 mm and solubilization efficiency (SE) of 140.6 %, producing in the supernatant 63.5 mg/L of soluble phosphorus, in addition to being positive for ACC deaminase activity. Inoculations trials of habanero chili (Capsicum chinense Jacq.) seeds with Paenibacillus sp. CBRM17 showed its potential to be used as an inoculant in the growth promotion of this crop, since it increased all growth variables; increasing the total fresh and dry biomass by 93.3 and 96.4 %, respectively.","PeriodicalId":334241,"journal":{"name":"ECORFAN Journal Republic of Nicaragua","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133335883","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}

引用次数: 0

Cultivation conditions of the Californian Red Worm in Ciudad Juárez, Chihuahua 加利福尼亚红虫在吉娃娃市Juárez的养殖条件

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-09-14 DOI: 10.35429/ejrn.2022.15.8.1.7

Laura NAVARRO-ENRÍQUEZ, D. Rivera-Mojica, Amado TOVAR-VÁSQUEZ, Ana Lorena CHÁVEZ-MONTELONGO

引用次数: 0

Cenote Chen ha, and water quality indicators 天然井陈哈，水质指标达标

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-06-30 DOI: 10.35429/ejrn.2022.14.8.22.29

Luz Adriana Vizcaíno-Rodríguez, Víctor RAVELERO-VAZQUEZ, Ramiro Luján-Godínez, Divino Miguel CANUL-GARRIDO

{"title":"Cenote Chen ha, and water quality indicators","authors":"Luz Adriana Vizcaíno-Rodríguez, Víctor RAVELERO-VAZQUEZ, Ramiro Luján-Godínez, Divino Miguel CANUL-GARRIDO","doi":"10.35429/ejrn.2022.14.8.22.29","DOIUrl":"https://doi.org/10.35429/ejrn.2022.14.8.22.29","url":null,"abstract":"The cenotes of the Yucatan Peninsula are characterized by karstic relief, warm temperatures, and transparency of their water bodies. The mixture of fresh water from infiltrations of rainwater and runoff coupled with underground rivers or marine intrusion, make up the habitat of aquatic, amphibian, and terrestrial species. The Chen ha cenote, located in Chocholá, was used for tourist purposes, however, the lack of an environmental culture and some anthropogenic activities cause deterioration and contamination of the wetland, which putting its conservation at risk. The objective of the present work was to carry out a limnological analysis in Cenote Chen ha, to determine the level of fragility of the ecosystem. The variables analyzed were pH, dissolved oxygen, temperature, conductivity and phytoplankton biodiversity. Results. 2600 µS/cm of conductivity, 8.25 pH and 2.8 ppm of dissolved Oxygen. Phytoplankton: Diatoms 46.2%, Cyanobacteria 38.1%, Chlorophytes 8.1%, Euglenas 5.5%, and Dinoflagellates 2.1% predominated. Asterionella was identified as an indicator species of environmental health. Microcystis aureginosa, Planktothrix agardhii, and Cyanosarcina caribeana, Pseudanaena, Peridium and Gonyaulax species are shown as indicators of environmental contamination. No dominance of any species was observed; however, frequent monitoring of indicator species is recommended.","PeriodicalId":334241,"journal":{"name":"ECORFAN Journal Republic of Nicaragua","volume":"55 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":"129899453","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}

引用次数: 0

Evaluation of the UV index in the campus UAZ siglo XXI for the year 2019 UAZ siglo XXI校园2019年紫外线指数评估

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-06-30 DOI: 10.35429/ejrn.2022.14.8.11.14

Juan Daniel FRÍAS-HERNÁNDEZ, A. E. González-Cabrera, Rodrigo Cervando Villegas-Martínez, J. García-González

引用次数: 0

A comparative study between a system of commercial mixed oxide ceramic membranes and a system of mixed oxide ceramic membranes impregnated with porcine gelatin for the removal of emergent pollutants 工业混合氧化陶瓷膜系统与猪明胶浸渍混合氧化陶瓷膜系统去除突发性污染物的比较研究

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-06-30 DOI: 10.35429/ejrn.2022.14.8.15.21

Jeniffer Giovanna ESTRADA-PÉREZ, V. Pérez-Moreno, M. Ramos-López, J. A. Rodriguez-Morales

{"title":"A comparative study between a system of commercial mixed oxide ceramic membranes and a system of mixed oxide ceramic membranes impregnated with porcine gelatin for the removal of emergent pollutants","authors":"Jeniffer Giovanna ESTRADA-PÉREZ, V. Pérez-Moreno, M. Ramos-López, J. A. Rodriguez-Morales","doi":"10.35429/ejrn.2022.14.8.15.21","DOIUrl":"https://doi.org/10.35429/ejrn.2022.14.8.15.21","url":null,"abstract":"A comparison was made between a tangential flow system with mixed oxide ceramic membranes and a tangential flow system with mixed oxide ceramic membranes impregnated with porcine gelatin for emerging contaminants such as tetracycline. For the impregnation of the ceramic membranes, a tangential flow system and a 1% porcine gelatin solution were improved. The surface of the membranes before and after impregnation was characterized by Scanning Electron Microscopy (SEM) to observe the deposition of porcine gelatin in the pores. For the removal tests, ceramic membranes of mixed oxides of 1 KD and 5 KD and a Tetracycline solution of 80 mg/L were used, taking samples at 10, 30 and 60 min, which were analyzed by means of UV-Vis spectroscopy. The objective of this work was to compare the removal capacity of emerging contaminants by means of a membrane system impregnated with porcine gelatin. A removal above 70% of Tetracycline was obtained in the 5KD membranes with impregnation.","PeriodicalId":334241,"journal":{"name":"ECORFAN Journal Republic of Nicaragua","volume":"165 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":"116136965","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}

引用次数: 0

Production structure and commercialization of green vegetables in the valley of Tecamachalco, Puebla, Mexico 墨西哥普埃布拉州Tecamachalco山谷绿色蔬菜的生产结构和商业化

ECORFAN Journal Republic of Nicaragua Pub Date : 2022-06-30 DOI: 10.35429/ejrn.2022.14.8.1.10

Iván Ximitl-Islas, Marisol Rodríguez-De La Vega, Alejandra Cabildo-Orea, Rafael Machorro-Díaz

{"title":"Production structure and commercialization of green vegetables in the valley of Tecamachalco, Puebla, Mexico","authors":"Iván Ximitl-Islas, Marisol Rodríguez-De La Vega, Alejandra Cabildo-Orea, Rafael Machorro-Díaz","doi":"10.35429/ejrn.2022.14.8.1.10","DOIUrl":"https://doi.org/10.35429/ejrn.2022.14.8.1.10","url":null,"abstract":"In the current project we have the opportunity to show a study, at a regional level, in the state of Puebla, in the central highlands of Mexico, located in the Balsas Basin; belonging to the Rural Development District of Tecamachalco, Puebla. The object of the study were the vegetable producers, who were interviewed through a questionnaire addressed to 89 producers, to carry out the diagnosis of the production and commercialization of vegetables in the local, regional, state, national, and international market. Within the framework of the TMEC, current legislation requires producers to obtain different certifications to comply with each of the standards that exist in regulations, in national and international markets. Within the value chains, the main marketing channels are Huixcolotla and Iztapalapa’s Supply Centers, supermarkets, markets, street markets, and exportations, which prevails in a regional and local market. The field study was carried out in 2021 in the municipalities of Tecamachalco and Palmar de Bravo; the technique was the interview, and the instrument was a questionnaire.","PeriodicalId":334241,"journal":{"name":"ECORFAN Journal Republic of Nicaragua","volume":"27 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":"129637294","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}

引用次数: 0

The productivity in the beekeeping sector of Comalcalco, Tabasco, for the design of an improvement proposal 塔巴斯科州Comalcalco养蜂部门的生产力，为改进建议的设计

ECORFAN Journal Republic of Nicaragua Pub Date : 2021-11-30 DOI: 10.35429/ejrn.2021.13.7.28.32

Génesis PAYRÓ-GARCÍA, Juana María MOREJÓN-SÁNCHEZ, Emeterio PAYRÓ–DE LA CRUZ, Manuela de Jesús MONTEJO-ZAMUDIO

引用次数: 0

Theoretical construction of sustainable social awareness in mexican organizations 墨西哥组织可持续社会意识的理论建构

ECORFAN Journal Republic of Nicaragua Pub Date : 2021-07-31 DOI: 10.35429/ejrn.2021.13.7.10.20

Maricela Ojeda-Gutiérrez, Rosa Elia Martinez-Torres, Patricia Rivera-Acosta

引用次数: 0