Proyecto de exportación de laca para pisos de madera para mejorar la rentabilidad de la empresa “Parquet los Pinos” desde la ciudad de Riobamba- Ecuador hacia las ferreterías de Lima - Perú.

El presente trabajo de investigación es un “Proyecto De Exportación de Laca para Pisos de Madera para Mejorar La Rentabilidad de la Empresa “Parquet Los Pinos” Desde La Ciudad de Riobamba- Ecuador hacia las Ferreterías de Lima - Perú.”, se lo ha realizado con la finalidad de conocer la rentabilidad del proyecto. Se realizó un estudio de mercado, el cual permitió analizar diferentes factores, como: las importaciones del mercado objetivo, exportaciones nacionales, situación socio económica y política, entre otras; así como también, el estudio técnico, logístico y financiero en el que se muestra la proyección de ventas, estructura organizacional, aspectos legales y financiación del proyecto. En el estudio financiero es un punto muy importante que nos permite analizar la rentabilidad del proyecto, obteniendo como resultado de los siguientes indicadores: Valor Actual Neto (VAN) $763.647,90; Tasa Interna de Retorno (TIR) un 54$763.647,90, Internal Rate f Return (IRR) 54%, and cost-benefit ratio is 1,04, it means that each dollar invested generates 0,04 cents, recovering of invest will be reached in 9 years and three monts

Subsurface Insights of the Maricunga Gold Belt through Local Earthquake Tomography

With the advancement of the use of geophysical methods in mining exploration, the possibility of restudying known mineral deposits that could have greater potential than that previously estimated is opening up, as is the case in the Maricunga Belt (MB), which is a metallogenic belt located east of Copiapó, Chile, with a length of 200 km and oriented in the NNE-SSW direction. This belt hosts significant gold deposits classified as porphyry gold (-copper), epithermal gold (-silver) of a high sulphidation type, and transitional gold, in some districts. In this work we studied the characteristics of the MB through local earthquake tomography (LET), which revealed a clear spatial correlation between low Vp/Vs anomalies and the gold deposits, demonstrating that lithologic interpretation using Vp and Vs values of the seismic tomography makes sense for the most common rocks associated with the genesis of porphyry-type deposits. Furthermore, high Vp/Vs anomalies were correlated to the main regional faults around the study zone, which seem to have a robust structural control regarding the location of the deposits

Actitudes del estudiantado universitario sobre la felicidad: Un análisis descriptivo de sus factores

This research has identified the attitudes of university students regarding the factors associated with happiness. This quantitative research is based on a descriptive design with the participation of 237 university students (59.5% women) from the University of the Autonomous Regions of the Nicaraguan Caribbean Coast. A factor scale was applied that measures happiness associated with factors such as a positive sense of life; Satisfaction with life; personal fulfillment; and joy of living. Results confirm that students' attitudes about happiness are positive (M = 100.77; SD = 16.07) with a Cronbach's alpha reliability of 89.5%; in the factors associated with happiness the students achieved positive attitudes in relation to the theoretical mean: positive meaning of life (MT = 33; M = 42.10; SD = 8.35); life satisfaction (MT = 18; M = 23.02; SD = 4.28); personal fulfillment (MT = 18; M = 20.32; SD = 4.40); and joy of living (MT = 12; M = 15.31 SD = 3.01). It is concluded that attitudes towards happiness and its associated factors are present in the educational field, therefore, empowerment and psycho-pedagogical advice is necessary for the professional training of students.Esta investigación ha identificado las actitudes del estudiantado universitario respecto con los factores asociados con la felicidad. Se trata de una investigación cuantitativa sustentada en un diseño descriptivo con la participación de 237 estudiantes universitarios (59,5 % mujeres) de la Universidad de las Regiones Autónomas de la Costa Caribe Nicaragüense. Se aplicó una escala factorial que mide la felicidad, asociada a factores como sentido positivo de la vida; satisfacción con la vida; realización personal; y alegría de vivir. Resultado confirman que las actitudes del estudiantado sobre la felicidad son positivas (M=100,77; SD=16,07) con una confiabilidad alfa de Cronbach’s de 89,5%; en los factores asociados a la felicidad los estudiantes alcanzaron actitudes positivas en relación con la media teórica: sentido positivo de la vida (MT=33; M=42,10; SD=8,35); satisfacción con la vida(MT=18; M=23,02; SD=4,28); realización personal (MT=18; M=20,32; SD=4,40); y alegría de vivir (MT=12; M=15,31 SD=3,01). Se concluye que las actitudes hacia la felicidad y sus factores asociados esta presente en el ámbito educativo, por ello, es necesario el empoderamiento y el asesoramiento psicopedagógico de cara a la formación profesional del estudiantado

A new critical social science research agenda on pesticides

The global pesticide complex has transformed over the past two decades, but social science research has not kept pace. The rise of an enormous generics sector, shifts in geographies of pesticide production, and dynamics of agrarian change have led to more pesticide use, expanding to farm systems that hitherto used few such inputs. Declining effectiveness due to pesticide resistance and anemic institutional support for non-chemical alternatives also have driven intensification in conventional systems. As an inter-disciplinary network of pesticide scholars, we seek to renew the social science research agenda on pesticides to better understand this suite of contemporary changes. To identify research priorities, challenges, and opportunities, we develop the pesticide complex as a heuristic device to highlight the reciprocal and iterative interactions among agricultural practice, the agrochemical industry, civil society-shaped regulatory actions, and contested knowledge of toxicity. Ultimately, collaborations among social scientists and across the social and biophysical sciences can illuminate recent transformations and their uneven socioecological effects. A reinvigorated critical scholarship that embraces the multifaceted nature of pesticides can identify the social and ecological constraints that drive pesticide use and support alternatives to chemically driven industrial agriculture

A new critical social science research agenda on pesticides

Unidad de excelencia María de Maeztu CEX2019-000940-MThe global pesticide complex has transformed over the past two decades, but social science research has not kept pace. The rise of an enormous generics sector, shifts in geographies of pesticide production, and dynamics of agrarian change have led to more pesticide use, expanding to farm systems that hitherto used few such inputs. Declining effectiveness due to pesticide resistance and anemic institutional support for non-chemical alternatives also have driven intensification in conventional systems. As an inter-disciplinary network of pesticide scholars, we seek to renew the social science research agenda on pesticides to better understand this suite of contemporary changes. To identify research priorities, challenges, and opportunities, we develop the pesticide complex as a heuristic device to highlight the reciprocal and iterative interactions among agricultural practice, the agrochemical industry, civil society-shaped regulatory actions, and contested knowledge of toxicity. Ultimately, collaborations among social scientists and across the social and biophysical sciences can illuminate recent transformations and their uneven socioecological effects. A reinvigorated critical scholarship that embraces the multifaceted nature of pesticides can identify the social and ecological constraints that drive pesticide use and support alternatives to chemically driven industrial agriculture

Remediación de suelos contaminados con hidrocarburos empleando sustancias húmicas de vermicomposta

La biorremediación utilizando sustancias húmicas es una de las técnicas recientes y prometedoras para la restauración de suelos contaminados por hidrocarburos, pero existe poca información sobre su comportamiento en los diversos tipos de suelo. Por estas razones, esta investigación tuvo como objetivo evaluar la remoción de hidrocarburos totales del petróleo o HTP en tres suelos con diferentes texturas (S1, S2 y S3) y tratados con enmiendas orgánicas de vermicomposta (cascarillas de cacao, Theobroma cacao; arroz, Oriza sativa; bagazo de caña, Saccharum officinarum; estiércol de vaca) y sustancias húmicas comerciales (humato de potasio). Se planteó un diseño experimental multifactorial aleatorio (3 × 3 × 2), constituido por tipo de suelo, enmienda orgánica (sin vermicomposta, con vermicomposta orgánica, con sustancias húmicas comerciales), y carga microbiana (con microorganismos, sin microorganismos). Los resultados fueron analizados mediante las pruebas ANOVA-Tukey en el programa Statgraphics Centurion TM V.18 (α = 0.05) con el fin de evaluar diferencias significativas entre los tratamientos. Los resultados muestran que S2 con vermicomposta orgánica tuvo la mayor remoción (86% de HTP) luego de 60 días de incubación, en comparación con el tratamiento con sustancias húmicas comerciales, relacionándose con la baja biodisponibilidad de microorganismos. Este comportamiento también se observó en S3, el cual tuvo un porcentaje de remoción de HTP de 77.52 y 63.4%. Finalmente, la tasa de crecimiento celular fue mejor en S2 con sustancias húmicas comerciales. Se obtuvo un crecimiento promedio de 94×104 UFC g-1 de suelo durante los 60 días de evaluación del experimento, y un máximo de 98×105 UFC g-1 de suelo a los 45 días de tratamiento. Se concluye que el uso de vermicomposta es adecuada para suelos arcillosos, ya que las tasas de degradación son mayores en ellos. Además, representan una alternativa de menor costo que los tratamientos sintéticos y de revalorización de residuos orgánicos

Gender Difference in the Effects of COVID-19 Pandemic on Mechanical Reperfusion and 30-Day Mortality for STEMI: Results of the ISACS-STEMI COVID-19 Registry

Background. Several reports have demonstrated the impact of the COVID-19 pandemic on the management and outcome of patients with ST-segment elevation myocardial infarction (STEMI). The aim of the current analysis is to investigate the potential gender difference in the effects of the COVID-19 pandemic on mechanical reperfusion and 30-day mortality for STEMI patients within the ISACS-STEMI COVID-19 Registry. Methods. This retrospective multicenter registry was performed in high-volume primary percutaneous coronary intervention (PPCI) centers on four continents and included STEMI patients undergoing PPCIs in March–June 2019 and 2020. Patients were divided according to gender. The main outcomes were the incidence and timing of the PPCI, (ischemia time ≥ 12 h and door-to-balloon ≥ 30 min) and in-hospital or 30-day mortality. Results. We included 16683 STEMI patients undergoing PPCIs in 109 centers. In 2020 during the pandemic, there was a significant reduction in PPCIs compared to 2019 (IRR 0.843 (95% CI: 0.825–0.861, p < 0.0001). We did not find a significant gender difference in the effects of the COVID-19 pandemic on the numbers of STEMI patients, which were similarly reduced from 2019 to 2020 in both groups, or in the mortality rates. Compared to prepandemia, 30-day mortality was significantly higher during the pandemic period among female (12.1% vs. 8.7%; adjusted HR [95% CI] = 1.66 [1.31–2.11], p < 0.001) but not male patients (5.8% vs. 6.7%; adjusted HR [95% CI] = 1.14 [0.96–1.34], p = 0.12). Conclusions. The COVID-19 pandemic had a significant impact on the treatment of patients with STEMI, with a 16% reduction in PPCI procedures similarly observed in both genders. Furthermore, we observed significantly increased in-hospital and 30-day mortality rates during the pandemic only among females. Trial registration number: NCT 04412655

Results of the ISACS-STEMI COVID-19 Registry

Publisher Copyright: © 2023 by the authors.Background. Several reports have demonstrated the impact of the COVID-19 pandemic on the management and outcome of patients with ST-segment elevation myocardial infarction (STEMI). The aim of the current analysis is to investigate the potential gender difference in the effects of the COVID-19 pandemic on mechanical reperfusion and 30-day mortality for STEMI patients within the ISACS-STEMI COVID-19 Registry. Methods. This retrospective multicenter registry was performed in high-volume primary percutaneous coronary intervention (PPCI) centers on four continents and included STEMI patients undergoing PPCIs in March–June 2019 and 2020. Patients were divided according to gender. The main outcomes were the incidence and timing of the PPCI, (ischemia time ≥ 12 h and door-to-balloon ≥ 30 min) and in-hospital or 30-day mortality. Results. We included 16683 STEMI patients undergoing PPCIs in 109 centers. In 2020 during the pandemic, there was a significant reduction in PPCIs compared to 2019 (IRR 0.843 (95% CI: 0.825–0.861, p < 0.0001). We did not find a significant gender difference in the effects of the COVID-19 pandemic on the numbers of STEMI patients, which were similarly reduced from 2019 to 2020 in both groups, or in the mortality rates. Compared to prepandemia, 30-day mortality was significantly higher during the pandemic period among female (12.1% vs. 8.7%; adjusted HR [95% CI] = 1.66 [1.31–2.11], p < 0.001) but not male patients (5.8% vs. 6.7%; adjusted HR [95% CI] = 1.14 [0.96–1.34], p = 0.12). Conclusions. The COVID-19 pandemic had a significant impact on the treatment of patients with STEMI, with a 16% reduction in PPCI procedures similarly observed in both genders. Furthermore, we observed significantly increased in-hospital and 30-day mortality rates during the pandemic only among females. Trial registration number: NCT 04412655.publishersversionpublishe