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Grazing behavior of New Zeland holstein cows with access to shade
Rodolfo Ramírez-Valverde Juan Burgueño (2022, [Artículo])
Temperature and Humidity Index Artificial Shade CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA SHADING DAIRY COWS SOLAR RADIATION
Percepción y significación de la gráfica urbana, en un acercamiento a la transdisciplinariedad
MARIA TERESA OLALDE RAMOS (2023, [Capítulo de libro])
Capítulo número 1 de la Sección El juego de los signos.
Se puede decir que los gráficos urbanos al ser analizados desde los distintos enfoques en que son interpretados, pueden ser entendidos como un fenómeno complejo, vistos desde su representación formal como signos, o también de acuerdo a su funcionalidad práctica como pueden ser las señales de tránsito, o bien los anuncios publicitarios y su impacto comercial que, como parte del contexto en que se ubican, pueden cambiar su sentido práctico y tomar nuevos roles de acuerdo a su significado. Estos mismos mensajes visuales pueden llegar a ser interpretados y significados como símbolos representativos de un sitio o como decoraciones escenográficas del mismo. Lo importante es entender es que todos y cada uno de los elementos visuales que encontramos en el contexto urbano comunican, ya que intrínsecamente llevan un mensaje en su propia representación visual, que a su vez son interpretados desde distintos enfoques por el sujeto con el que interactúan. El estudio transdisciplinario enriquecerá el conocimiento de la ciudad, lo cual puede ser un gran apoyo en la creación de distintas intervenciones en cuanto a la organización de espacios, desarrollo de edificaciones, de elementos mobiliarios, de transporte, así como de procesos de comunicación, las cuales se verán enriquecidas con los distintos enfoques disciplinarios que podemos encontrar en las diversas interpretaciones de los múltiples sujetos que la viven y la utilizan como parte de su cotidianeidad.
Signs and signboards. Commercial art. Graphic arts. Visual communication. Arte comercial. Artes gráficas. Letreros. Comunicación visual. HF5843 HUMANIDADES Y CIENCIAS DE LA CONDUCTA CIENCIAS DE LAS ARTES Y LAS LETRAS TEORÍA, ANÁLISIS Y CRÍTICA DE LAS BELLAS ARTES
NAHUM ANDRES MEDELLIN CASTILLO ELIZABETH DIANE ISAACS PAEZ Liliana Giraldo Gutiérrez JUAN CARLOS MORENO-PIRAJAN ITZIA RODRIGUEZ MENDEZ SIMON YOBANNY REYES LOPEZ JAIME REYES HERNANDEZ SONIA JUDITH SEGOVIA SANDOVAL (2022, [Artículo])
"Groundwater with high fluoride concentrations has been recognized as one of the serious concerns worldwide. Besides, the fluoride released into the groundwater by slow dissolution of fluoride-containing rocks, various industries also contribute to fluoride pollution [1]. Excess intake of fluoride leads to various health problems such as dental and skeletal fluorosis, cancer, infertility, brain damage, thyroid diseases, etc. [2]. On the other hand, bromide is naturally present in surface and groundwater sources. However, during the chlorination process, bromide can be oxidized to HOBr, which can react with natural organic matter in water to form brominated organic disinfection byproducts, which are very harmful to human health [3]. Among various methods for water treatment, the adsorption process has been widely used and seems to be an efficient and attractive method for the removal of many contaminants in water, such as anions, in terms of cost, simplicity of design, and operation [4,5]. In the past years, xerogels and carbon xerogels, a new type of adsorbents, which are synthesized by the sol-gel polycondensation of resorcinol and formaldehyde, have gained attention due to their moldable texture and chemical properties [6]. Moreover, melamine addition in resorcinol and formaldehyde xerogels adds basic groups on its surface, favouring Lewis acid-base interactions between xerogels and other components by adsorption [7]. In this data article, the synthesis of three resorcinolformaldehyde (R/F) xerogels with an increasing amount of melamine (M) was carried out by colloidal polymerization (molar ratios of M/R = 0.5, M/R = 1.0, and M/R = 2.0). Additionally, samples of M/R = 0.5 xerogel were carbonized at 400, 450, and 550 degrees C under an inert atmosphere to increase their specific area. Organic and carbon xerogels obtained were characterized by FTIR, TGA, SEM, Physisorption of N 2, and the pH at the point of zero charge (pH PZC). All organic xerogels were also tested as adsorbents on the removal of fluoride and bromide ions from aqueous phase. The Freundlich, Langmuir, and Radke-Prausnitz isotherm models were applied to interpret the experimental data from adsorption equilibrium. Additionally, the data of the mass of the xerogel needed to remove fluoride and bromide from groundwater and fulfill the maximum concentration levels are also included."
Xerogels Melamine Colloidal polymerization Fluoride and bromide ions Adsorption BIOLOGÍA Y QUÍMICA QUÍMICA QUÍMICA
ELISA IRENE AZUARA LICEAGA Abigail Betanzos CESAR SALVADOR CARDONA FELIX ELIZABETH JACQUELINE CASTAÑEDA ORTIZ HELIOS CARDENAS HERNANDEZ ROSA ELENA CARDENAS GUERRA GUILLERMO PASTOR PALACIOS GUILLERMINA GARCIA RIVERA DAVID HERNANDEZ ALVAREZ CARLOS HUMBERTO TRASVIÑA ARENAS Corina Diaz Quezada Esther Orozco Luis Gabriel Brieba de Castro (2022, [Artículo])
"A Corrigendum on
The soleDNA ligase in Entamoeba histolytica is a high-fidelity DNA ligase involved in DNA damage repair
By Azuara-Liceaga E, Betanzos A, Cardona-Felix CS, Castañeda-Ortiz EJ, Cárdenas H, Cárdenas-Guerra RE, Pastor-Palacios G, García-Rivera G, Hernández-Álvarez D, Trasviña-Arenas CH, Diaz-Quezada C, Orozco E and Brieba LG (2018) Front. Cell. Infect. Microbiol. 8:214. doi: 10.3389/fcimb.2018.00214"
EhDNAlig Protozoan DNA insults Ligation Repairing 8-oxoG adduct NER and BER pathways BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA MICROBIOLOGÍA MICROBIOLOGÍA
Structural analysis evaluationfor rollers of chassis dynoUsing finite element software
Jesús Emmanuel López Rizo ALFREDO CHAVEZ LUNA JAIME GONZALO SANTANA ESQUIVEL (2023, [Artículo])
This paper discusses the design considerations for a chassis dynamometer, focused on the rollers system used for measuring the power and torque of a vehicle in a university-level workshop. The design must prioritize factors such as safety, ease of use, adaptability to diverse types of vehicles, and the inclusion of safety systems to protect students and the vehicle. The work suggests adaptative features for the design, such as an adjustable fastening system and a compact and portable design, to adapt the structure into a university laboratory. The study also describes common methods for measuring engine power and torque using a chassis dynamometer, and the accurate and reliable measurement systems used for this purpose. This concludes with a discussion of the manufacturing methods used for the chassis dynamometer and a static analysis of the maximum effort capacity in each roller using Von Mises and Goodman fatigue theories. Developing a chassis dynamometer, in accordance the current patents available for workshop practices in a university is essential for providing students with comprehensive training.
Chassis dynamometer Conceptual design Finite element software Power and torque measurement Structural analysis INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS OTRAS ESPECIALIDADES TECNOLÓGICAS OTRAS OTRAS
Do provisioning ecosystem services change along gradients of increasing agricultural production?
Ronju Ahammad Stephanie Tomscha Sarah Gergel Frédéric Baudron Jean-Yves Duriaux Chavarría Samson Foli Dominic Rowland Josh Van Vianen Terence Sunderland (2024, [Artículo])
Context: Increasing agricultural production shapes the flow of ecosystem services (ES), including provisioning services that support the livelihoods and nutrition of people in tropical developing countries. Although our broad understanding of the social-ecological consequences of agricultural intensification is growing, how it impacts provisioning ES is still unknown. Objectives: We examined the household use of provisioning ES across a gradient of increasing agricultural production in seven tropical countries (Bangladesh, Burkina Faso, Cameroon, Ethiopia, Indonesia, Nicaragua and Zambia). We answered two overarching questions: (1) does the use of provisioning ES differ along gradients of agriculture production ranging from zones of subsistence to moderate and to high agriculture production? and (2) are there synergies and/or trade-offs within and among groups of ES within these zones? Methods: Using structured surveys, we asked 1900 households about their assets, livestock, crops, and collection of forest products. These questions allowed us to assess the number of provisioning ES households used, and whether the ES used are functionally substitutable (i.e., used similarly for nutrition, material, and energy). Finally, we explored synergies and trade-offs among household use of provisioning ES. Results: As agricultural production increased, provisioning ES declined both in total number and in different functional groups used. We found more severe decreases in ES for relatively poorer households. Within the functional groups of ES, synergistic relationships were more often found than trade-offs in all zones, including significant synergies among livestock products (dairy, eggs, meat) and fruits. Conclusions: Considering landscape context provides opportunities to enhance synergies among provisioning services for households, supporting resilient food systems and human well-being.
Agricultural Production Zones Agricultural Intensifcation Synergies and Trade-Offs Landscape Multifunctionality Social-Ecological Systems CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGRICULTURE INTENSIFICATION ECOSYSTEM SERVICES LANDSCAPE SOCIAL-ECOLOGICAL RESILIENCE ECOSYSTEM SERVICES
Impact of automation on enhancing energy quality in grid-connected photovoltaic systems
Virgilio Alfonso Murillo Rodríguez NOE VILLA VILLASEÑOR José Manuel Robles Solís OA Guirette-Barbosa (2023, [Artículo])
Rapid growth in the integration of new consumers into the electricity sector, particularly in the industrial sector, has necessitated better control of the electricity supply and of the users’ op-erating conditions to guarantee an adequate quality of service as well as the unregulated dis-turbances that have been generated in the electrical network that can cause significant failures, breakdowns and interruptions, causing considerable expenses and economic losses. This research examines the characteristics of electrical variations in equipment within a company in the industrial sector, analyzes the impact generated within the electrical system according to the need for operation in manufacturing systems, and proposes a new solution through automation of the regulation elements to maintain an optimal system quality and prevent damage and equipment failures while offering a cost-effective model. The proposed solution is evaluated through a reliable simulation in ETAP (Energy Systems Modeling, Analysis and Optimization) software, which emulates the interaction of control elements and simulates the design of electric flow equipment operation. The results demonstrate an improvement in system performance in the presence of disturbances when two automation schemes are applied as well as the exclusive operation of the capacitor bank, which improves the total system current fluctuations and improves the power factor from 85.83% to 93.42%. Such a scheme also improves the waveform in the main power system; another improvement result is when simultaneously operating the voltage and current filter together with the PV system, further improving the current fluctuations, improving the power factor from 85.83% to 94.81%, achieving better stability and improving the quality of the waveform in the main power grid.
This article belongs to Special Issue Advances and Optimization of Electric Energy System.
Power quality Capacitor bank Voltage and current filter Photovoltaic system INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS OTRAS ESPECIALIDADES TECNOLÓGICAS OTRAS OTRAS
Alma Karla Buyoli Saavedra (2024, [Tesis de maestría])
179 páginas. Maestría en Diseño y Desarrollo de Productos
En la actualidad, la ansiedad representa uno de los mayores y más silenciosos problemas de la sociedad. Del mismo modo, las infancias y las adolescencias son una población que se ve afectada en gran medida por estos trastornos. En definitiva, estas es una población con una problemática apremiante de considerar, observar y trabajar. Por tal razón, resulta fundamental generar herramientas y estrategias que permitan a niños, niñas y adolescentes identificar y regular sus emociones de manera efectiva. Aprender a identificar las emociones es algo de suma importancia no solo dentro del proceso terapéutico, sino en la vida diaria del infante. En primer lugar, el hecho de reconocer y expresar emociones contribuye a canalizar la ansiedad. De igual forma, esto les ayuda a aprender a enfrentar los problemas de la vida diaria de una manera adecuada; por lo tanto, lo anterior se estima como un beneficio no solo en la infancia, sino también en la edad adulta. Asimismo, un correcto manejo emocional les permite incrementar la percepción de control sobre los sucesos que viven. Igualmente, esto refuerza su habilidad para empatizar, resolver conflictos y llegar a acuerdos, lo que mejora su forma de relacionarse con otras personas. En suma, son diferentes beneficios que se otorgarían al infante al aprender a conocer, identificar y expresar sus emociones. No obstante, estas aportaciones pueden ser mayores si se realizan a través de elementos lúdicos. Para empezar, la recreación es una acción nata y cotidiana en los infantes. El uso de fantasía, el juego simbólico y la imaginación son actividades naturales del desarrollo en el juego de los infantes (Schaefer, 2012). De igual manera, cuando las y los menores juegan, aprenden a tolerar la frustración, a regular sus emociones y a destacar en una tarea que es innata (Schaefer, 2012). En esa medida, el juego es quizá el medio más poderoso y apropiado para el desarrollo en el cual las y los menores pueden construir relaciones con los adultos, desarrollar el pensamiento causal, procesar las experiencias estresantes y aprender habilidades sociales (Chaloner, 2001). Por tal motivo, la propuesta para apoyar el proceso terapéutico se efectúa por medio de elementos lúdicos que permitan a los infantes identificar y expresar emociones a través del juego. Por tal motivo el objetivo de este trabajo es diseñar elementos lúdicos que apoyen a los niños de 6 a 8 años diagnosticados con ansiedad que se encuentren en tratamiento psicológico de la teoría cognitivo-conductual en la CDMX y área metropolitana con el fin de que puedan conocer, identificar y expresar sus emociones.
Games--Design and construction. Child psychotherapy. Play therapy. Games--Therapeutic use. Ansiedad en niños. Terapia de juego. Psicoterapia infantil. GV1230 HUMANIDADES Y CIENCIAS DE LA CONDUCTA CIENCIAS DE LAS ARTES Y LAS LETRAS TEORÍA, ANÁLISIS Y CRÍTICA DE LAS BELLAS ARTES
Géneros y afectos en la espacialidad universitaria: perspectivas para el diseño de campus futuros
Griselda Flesler Carolina Spataro RAFAEL BLANCO (2023, [Capítulo de libro])
Este trabajo analiza el impacto en el espacio universitario de las políticas de género implementadas en el ámbito de la Universidad de Buenos Aires (UBA, Argentina) entre los años 2015 y 2020. Se trata de un estudio de caso realizado en el ámbito de la Ciudad Universitaria, campus en el que se emplazan las facultades de Ciencias Exactas y Naturales (FCEyN) y de Arquitectura, Diseño y Urbanismo (FADU). El propósito de este artículo es problematizar la relación entre afecto y espacialidad a partir de los resultados de una encuesta que se propuso identificar cuáles son las emociones que suscitan algunos espacios cotidianos para quienes trabajan y estudian en el campus de la UBA, en particular, aquellos intervenidos con políticas de género durante los últimos años.
This paper analyzes the impact on spaciality of gender policies implemented at the University of Buenos Aires (UBA, Argentina) between 2015 and 2020. It is a case study carried out in the campus where the Faculties of Exact and Natural Sciences (FCEyN) and Architecture, Design and Urbanism (FADU) are located. The purpose of this article is to problematize the relationship between affective perception and spatiality based on the results of a survey that aimed to identify the emotions that some daily spaces arouse for those who work and study on the UBA Campus, in particular, those intervened with gender policies in recent years.
Universidad, espacio, género, giro afectivo. University, space, gender, affective turn. Universidad de Buenos Aires. Gender mainstreaming. Community and college. Incorporación de la perspectiva de género. Universidades. Comunidad y universidad. LC191.98.A74 HUMANIDADES Y CIENCIAS DE LA CONDUCTA PEDAGOGÍA ORGANIZACIÓN Y PLANIFICACIÓN DE LA EDUCACIÓN
Manish Kakraliya madhu choudhary Mahesh Gathala Parbodh Chander Sharma ML JAT (2024, [Artículo])
The future of South Asia’s major production system (rice–wheat rotation) is at stake due to continuously aggravating pressure on groundwater aquifers and other natural resources which will further intensify with climate change. Traditional practices, conventional tillage (CT) residue burning, and indiscriminate use of groundwater with flood irrigation are the major drivers of the non-sustainability of rice–wheat (RW) system in northwest (NW) India. For designing sustainable practices in intensive cereal systems, we conducted a study on bundled practices (zero tillage, residue mulch, precise irrigation, and mung bean integration) based on multi-indicator (system productivity, profitability, and efficiency of water, nitrogen, and energy) analysis in RW system. The study showed that bundling conservation agriculture (CA) practices with subsurface drip irrigation (SDI) saved ~70 and 45% (3-year mean) of irrigation water in rice and wheat, respectively, compared to farmers’ practice/CT practice (pooled data of Sc1 and Sc2; 1,035 and 318 mm ha−1). On a 3-year system basis, CA with SDI scenarios (mean of Sc5–Sc8) saved 35.4% irrigation water under RW systems compared to their respective CA with flood irrigation (FI) scenarios (mean of Sc3 and Sc4) during the investigation irrespective of residue management. CA with FI system increased the water productivity (WPi) and its use efficiency (WUE) by ~52 and 12.3% (3-year mean), whereas SDI improved by 221.2 and 39.2% compared to farmers practice (Sc1; 0.69 kg grain m−3 and 21.39 kg grain ha−1 cm−1), respectively. Based on the 3-year mean, CA with SDI (mean of Sc5–Sc8) recorded −2.5% rice yield, whereas wheat yield was +25% compared to farmers practice (Sc1; 5.44 and 3.79 Mg ha−1) and rice and wheat yield under CA with flood irrigation were increased by +7 and + 11%, compared to their respective CT practices. Mung bean integration in Sc7 and Sc8 contributed to ~26% in crop productivity and profitability compared to farmers’ practice (Sc1) as SDI facilitated advancing the sowing time by 1 week. On a system basis, CA with SDI improved energy use efficiency (EUE) by ~70% and partial factor productivity of N by 18.4% compared to CT practices. In the RW system of NW India, CA with SDI for precise water and N management proved to be a profitable solution to address the problems of groundwater, residue burning, sustainable intensification, and input (water and energy) use with the potential for replication in large areas in NW India.
Direct Seeded Rice Subsurface Drip Irrigation Economic Profitability Energy and Nitrogen Efficiency CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CONSERVATION AGRICULTURE RICE SUBSURFACE IRRIGATION IRRIGATION SYSTEMS WATER PRODUCTIVITY ECONOMIC VIABILITY ENERGY EFFICIENCY NITROGEN-USE EFFICIENCY