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Selecciona los temas de tu interés y recibe en tu correo las publicaciones más actuales
YOLANDA MACIAS RODRIGUEZ (2022, [Artículo])
La epiescleritis (ESC) y escleritis (SC) son enfermedades que se caracterizan por causar inflamación de la capa externa fibrosa del globo ocular, la esclera y epiesclera. Estos padecimientos fueron descritos desde el siglo XIX y el Dr. Watson proporcionó la clasificación clínica que se usa para ordenarlas en sus diferentes subtipos. La etiología de las ESC y SC puede ser idiopática o asociada a causas específicas, como enfermedades autoinmunes, traumatismos, cirugías o infecciones. En diversas poblaciones del mundo se han reportado previamente las características de las ESC y SC. Sin embargo, en la población mexicana solo existen reportes de casos de presentaciones inusuales de ESC y SC y una sola serie reportando las características de la SC. Por lo anterior, se decidió llevar a cabo el presente estudio para expandir el conocimiento acerca de las características de la ESC y SC en la población mexicana. Se realizó un estudio retrospectivo y observacional. El diseño metodológico corresponde a una serie de casos. Se incluyeron pacientes con diagnóstico de ESC y SC, que hubieran firmado el consentimiento informado para participación en investigación clínica. Se analizaron los expedientes físicos y electrónicos de los pacientes que cumplieran con los criterios de inclusión, se tomó la información correspondiente a las variables previamente establecidas y se vació en una hoja de Microsoft Excel y posteriormente se analizaron estadísticamente con el programa SPSS (IBM). Se encontraron y analizaron 55 casos de ESC y 130 casos de SC. En ambos grupos hubo una predominancia del sexo femenino y la edad media fue mayor en pacientes con SC que en ESC (52.26 vs. 44.78 años). El tipo más común de ESC fue la simple y en SC la anterior difusa. La SC posterior fue el subtipo menos frecuente. La etiología más frecuente en ESC y SC fue la idiopática, y la segunda en frecuencia fue la espondiloartropatía asociada al haplotipo HLA B27 y la artritis reumatoide respectivamente. Los motivos de consulta más frecuente fueron ojo rojo solamente y ojo rojo doloroso. Los síntomas más comúnmente descritos por los pacientes con ESC y SC fueron ojo rojo, sensación de cuerpo extraño, dolor, lagrimeo y visión borrosa. Asimismo, los datos clínicos más comúnmente encontrados en pacientes con ESC y SC fueron la ingurgitción de los plexos conjuntivales y epiesclerales, queratopatía punteada superficial y queratitis ulcerativa periférica. La agudeza visual promedio fue buena tanto en ESC como en SC, siendo de 20/25 y 20/30 respectivamente. Para el análisis de tratamiento y recurrencias, se consideraron a los pacientes con un seguimiento mayor a una consulta, consistiendo estos últimos en 35 ESC y 108 SC. En la ESC, 91.4% de los pacientes fueron tratados con un AINE oral, 57.1% con esteroide tópico y 5.7% con AINE tópico. En SC, 76.9% usaron un AINE oral, 62% un esteroide oral, 50% un esteroide tópico y 52.7% un agente imnunosupresor. 29.6% de los pacientes con SC tuvieron una recurrencia. Al comparar la presente serie con las series de ESC y SC reportadas previamente en la literatura se encontró una considerable cantidad de similitudes, como la predominancia del sexo femenino, la media de edad, la incidencia estimada, los síntomas y signos, el tratamiento empleado y la cantidad de recurrencias y su asociación a una edad menor. Debido a todos lo anterior, se concluyó que la presentación de las ESC y SC en la población mexicana es similar a la presentación en otras poblaciones del mundo, previamente reportadas.
Especialidad en Oftalmología
MEDICINA Y CIENCIAS DE LA SALUD CIENCIAS MÉDICAS CIENCIAS CLÍNICAS OFTALMOLOGÍA
Muhammad Massub Tehseen Fatma Aykut Tonk Ahmed Amri Carolina Sansaloni Ezgi Kurtulus Muhammad Salman Mubarik Kumarse Nazari (2022, [Artículo])
Wheat Landraces Genetic Diversity SNP Markers Analysis of Molecular Variance AMOVA CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA BREEDING DISCRIMINANT ANALYSIS GENETIC VARIATION GENETIC DISTANCE GENETIC IMPROVEMENT GENETIC MARKERS HEXAPLOIDY LANDRACES POPULATION STRUCTURE SINGLE NUCLEOTIDE POLYMORPHISM TRITICUM AESTIVUM WHEAT
Diseño de una red de dispositivos inalámbricos para monitorear la calidad del aire en interiores
FRIDA JENNY DE LA ROSA ANDRADE (2023, [Tesis de maestría])
No cabe duda de que la contaminación ambiental siempre a existido, y es una consecuencia
producida por las diferentes actividades que el ser humano ha realizado a lo largo de su
desarrollo y evolución tecnológica, por lo que conlleva a muchas repercusiones en la
integridad física del ambiente. Las actividades de desarrollo, como la construcción, el
transporte y la fabricación, no solo agotan los recursos naturales, sino que también producen
una gran cantidad de desechos que conducen a la contaminación del aire, el agua, el suelo y
los océanos, dando pie a los problemas más preocupantes del ser humano, tal es el caso del
calentamiento global, las lluvias acidas. Hoy en día la contaminación del aire se considera
un tema de gran importancia puesto que, es uno de los principales problemas en las zonas
más urbanizadas del mundo, y se encuentra presente tanto en los países desarrollados como
en los no desarrollados, por ello surge la necesidad de conocer que tan contaminado se
encuentra el aire que se respira.
El estándar de calidad del aire es una táctica para establecer las condiciones del aire desde un
grado de pureza, hasta una calidad critica perjudicial para el deterioro de la salud humana,
haciendo referencia a la cantidad de contaminación presente en el aire, definiéndola ya sea
de alta calidad con un nivel bajo de contaminación o una mala calidad con un nivel elevado
de concentración de contaminación en el aire.
En este proyecto se diseñará una Red de dispositivos inalámbricos para el análisis y
monitoreo de la calidad del aire en interiores, con la finalidad de fungir como un medidor de
contaminación que le permita a las personas darse cuenta de que tan contaminados están sus
hogares. Por tal motivo en el desarrollo de este proyecto se hará uso de un microcontrolador
Arduino IDE, un Node-red y un phpMyadmin para el análisis y monotoreo constante de
diversos gases como CO, CO2, metano, nitrógeno y O2. Cabe mencionar que este escrito se
ha dividido en 4 capítulos en los cuales se explica detalladamente todos y cada uno de los
procesos llevado a cabo para la elaboración y el desarrollo de este proyecto.
There is no doubt that environmental pollution has always existed, and is a consequence
produced by the different activities that human beings have carried out throughout their
development and technological evolution, which leads to many repercussions on the physical
integrity of the environment. Development activities such as construction, transportation and
manufacturing not only deplete natural resources but also produce a large amount of waste
leading to pollution of air, water, soil and oceans, giving rise to to the most worrying problems
of human beings, such as global warming and acid rain. Nowadays, air pollution is considered
an issue of great importance since it is one of the main problems in the most urbanized areas
of the world, and is present in both developed and undeveloped countries, which is why the
need to know how contaminated the air you breathe is.
The air quality standard is a tactic to establish air conditions from a degree of purity to a
critical quality harmful to the deterioration of human health, referring to the amount of
pollution present in the air, defining it either high quality with a low level of contamination
or poor quality with a high level of concentration of contamination in the air.
In this project, a network of wireless devices will be designed for the analysis and monitoring
of indoor air quality, with the purpose of serving as a pollution meter that allows people to
realize how polluted their homes are. For this reason, in the development of this project, an
Arduino IDE microcontroller, a Node-red and a phpMyadmin will be used for the analysis
and constant monitoring of various gases such as CO, CO2, methane, nitrogen and O2. It is
worth mentioning that this writing has been divided into 4 chapters in which each and every
one of the processes carried out for the preparation and development of this project is
explained in detail.
BIOLOGÍA Y QUÍMICA QUÍMICA Red de dispositivos inalámbricos, análisis monitoreo, calidad, riesgo, contaminación. Network of wireless devices, monitoring analysis, quality, risk, contamination.
Daniel Arturo Cernas Ortiz (2023, [Artículo, Artículo])
This study´s objective was to examine empirical relationships between three dimensions of time perspective (future, present fatalistic, and past negative) and occupational self-efficacy. By surveying Mexican (n = 286) and U.S. (n = 272) respondents, we also tested the moderating role of culture. Regression analyses revealed that time perspective dimensions have significant associations with occupational self-efficacy, being future time perspective more potent than its past negative and present fatalistic counterparts. Moderation analyses indicated that none of the examined time perspective-self-efficacy relationships varied significantly between the U.S. and Mexico. Overall, this study suggests that relationships between time perspective and occupational self-efficacy vary according to different temporal dimensions, that future TP is key to develop occupational self-efficacy, and that cultural values may not exert a significant influence on the time perspective-occupational self-efficacy connection.
Perspectiva de tiempo autoeficacia diferencias culturales análisis de moderación CIENCIAS SOCIALES CIENCIAS SOCIALES Time perspective self-efficacy cultural differences moderation analysis
Addressing agricultural labour issues is key to biodiversity-smart farming
Thomas Daum Frédéric Baudron Matin Qaim Ingo Grass (2023, [Artículo])
There is an urgent need for agricultural development strategies that reconcile agricultural production and biodiversity conservation. This is especially true in the Global South where population growth is rapid and much of the world's remaining biodiversity is located. Combining conceptual thoughts with empirical insights from case studies in Indonesia and Ethiopia, we argue that such strategies will have to pay more attention to agricultural labour dynamics. Farmers have a strong motivation to reduce the heavy toil associated with farming by adopting technologies that save labour but can negatively affect biodiversity. Labour constraints can also prevent farmers from adopting technologies that improve biodiversity but increase labour intensity. Without explicitly accounting for labour issues, conservation efforts can hardly be successful. We hence highlight the need for biodiversity-smart agriculture, that is farming practices or systems that reconcile biodiversity with land and labour productivity. Our empirical insights suggest that technological and institutional options to reconcile farmers' socio-economic goals and biodiversity conservation exist but that more needs to be done to implement such options at scale.
Land Sharing Trade-Offs CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGRICULTURAL DEVELOPMENT BIODIVERSITY CONSERVATION LABOUR SUSTAINABILITY
Jingyi Wang Chaonan Li Long Li Matthew Paul Reynolds Jizeng Jia Xinguo Mao Ruilian Jing (2023, [Artículo])
Association Analysis Elite Genetic Resources Map‐Based Clones Protein Phosphatase 2C CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA DROUGHT GENETIC RESOURCES PROTEINS WHEAT WILTING
Review of Nationally Determined Contributions (NCD) of China from the perspective of food systems
Tek Sapkota (2023, [Documento de trabajo])
China is the largest emitter of greenhouse gases (GHG) and one of the countries most affected by climate change. China's food systems are a major contributor to climate change: in 2018, China's food systems emitted 1.09 billion tons of carbondioxide equivalent (CO2eq) GHGs, accounting for 8.2% of total national GHG emissions and 2% of global emissions. According to the Third National Communication (TNC) Report, in 2010, GHG emissions from energy, industrial processes, agriculture, and waste accounted for 78.6%, 12.3%, 7.9%, and 1.2% of total emissions, respectively, (excluding emissions from land use, land-use change and forestry (LULUCF). Total GHG emissions from the waste sector in 2010 were 132 Mt CO2 eq, with municipal solid waste landfills accounting for 56 Mt. The average temperature in China has risen by 1.1°C over the last century (1908–2007), while nationally averaged precipitation amounts have increased significantly over the last 50 years. The sea level and sea surface temperature have risen by 90 mm and 0.9°C respectively in the last 30 years. A regional climate model predicted an annual mean temperature increase of 1.3–2.1°C by 2020 (2.3–3.3°C by 2050), while another model predicted a 1–1.6°C temperature increase and a 3.3–3.7 percent increase in precipitation between 2011 and 2020, depending on the emissions scenario. By 2030, sea level rise along coastal areas could be 0.01–0.16 meters, increasing the likelihood of flooding and intensified storm surges and causing the degradation of wetlands, mangroves, and coral reefs. Addressing climate change is a common human cause, and China places a high value on combating climate change. Climate change has been incorporated into national economic and social development plans, with equal emphasis on mitigation and adaptation to climate change, including an updated Nationally Determined Contribution (NDC) in 2021. The following overarching targets are included in China's updated NDC: • Peaking carbon dioxide emissions “before 2030” and achieving carbon neutrality before 2060. • Lowering carbon intensity by “over 65%” by 2030 from the 2005 level. • Increasing forest stock volume by around 6 billion cubic meters in 2030 from the 2005 level. The targets have come from several commitments made at various events, while China has explained very well the process adopted to produce its third national communication report. An examination of China's NDC reveals that it has failed to establish quantifiable and measurable targets in the agricultural sectors. According to the analysis of the breakdown of food systems and their inclusion in the NDC, the majority of food system activities are poorly mentioned. China's interventions or ambitions in this sector have received very little attention. The adaptation component is mentioned in the NDC, but is not found to be sector-specific or comprehensive. A few studies have rated the Chinese NDC as insufficient, one of the reasons being its failure to list the breakdown of each sector's clear pathway to achieving its goals. China's NDC lacks quantified data on food system sub-sectors. Climate Action Trackers' "Insufficient" rating indicates that China's domestic target for 2030 requires significant improvements to be consistent with the Paris Agreement's target of 1.5°C temperature limit. Some efforts are being made: for example, scientists from the Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences (IEDA-CAAS) have developed methods for calculating GHG emissions from livestock and poultry farmers that have been published as an industrial standard by the Ministry of Agriculture and Rural Affairs, PRC (Prof Hongmin Dong, personal communication) but this still needs to be consolidated and linked to China’s NDC. The updated Nationally Determined Contributions fall short of quantifiable targets in agriculture and food systems as a whole, necessitating clear pathways. China's NDC is found to be heavily focused on a few sectors, including energy, transportation, and urban-rural development. The agricultural sectors' and food systems' targets are vague, and China's agrifood system has a large carbon footprint. As a result, China should focus on managing the food system (production, processing, transportation, and food waste management) to reduce carbon emissions. Furthermore, China should take additional measures to make its climate actions more comprehensive, quantifiable, and measurable, such as setting ambitious and clear targets for the agriculture sector, including activity-specific GHG-reduction pathways; prioritizing food waste and loss reduction and management; promoting sustainable livestock production and low carbon diets; reducing chemical pollution; minimizing the use of fossil fuel in the agri-system and focusing on developing green jobs, technological advancement and promoting climate-smart agriculture; promoting indigenous practices and locally led adaptation; restoring degraded agricultural soils and enhancing cooperation and private partnership. China should also prepare detailed NDC implementation plans including actions and the GHG reduction from conditional targets.
CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA GREENHOUSE GAS EMISSIONS CLIMATE CHANGE FOOD SYSTEMS LAND USE CHANGE AGRICULTURE POLICIES DATA ANALYSIS FOOD WASTES
Vida de un muerto. Entre nuestro universo y el otro
Nicolás Amoroso Boelcke (2023, [Capítulo de libro])
Capítulo número 3 de la Sección Imágenes y representaciones.
Se analiza el film Raymond & Ray, desde la construcción de la vida de Harris, personaje muerto desde el principio del film, y esto se hace mediante las palabras, no con escenas de la infancia que mencionan Raymond y Ray ni tampoco en las acciones que participa con los otros perso¬najes que hablan de él. Harris habita el filme desde las palabras.
Semiotics and motion pictures. Culture--Semiotic models. Dialogue analysis. Semiótica y cine. Análisis del diálogo. NX180.S46 HUMANIDADES Y CIENCIAS DE LA CONDUCTA CIENCIAS DE LAS ARTES Y LAS LETRAS TEORÍA, ANÁLISIS Y CRÍTICA DE LAS BELLAS ARTES CINEMATOGRAFÍA
Genomic regions associated with resistance to three rusts in CIMMYT wheat line “Mokue#1”
Naeela Qureshi Ravi Singh sridhar bhavani (2023, [Artículo])
Genetic Analysis Leaf Rust CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA GENETICS RUSTS QUANTITATIVE TRAIT LOCI MAPPING DISEASE RESISTANCE STRIPE RUST STEM RUST
Kindie Tesfaye Dereje Ademe Enyew Adgo (2023, [Artículo])
Spatiotemporal studies of the annual and seasonal climate variability and trend on an agroecological spatial scale for establishing a climate-resilient maize farming system have not yet been conducted in Ethiopia. The study was carried out in three major agroecological zones in northwest Ethiopia using climate data from 1987 to 2018. The coefficient of variation (CV), precipitation concertation index (PCI), and rainfall anomaly index (RAI) were used to analyze the variability of rainfall. The Mann-Kendall test and Sen’s slope estimator were also applied to estimate trends and slopes of changes in rainfall and temperature. High-significance warming trends in the maximum and minimum temperatures were shown in the highland and lowland agroecology zones, respectively. Rainfall has also demonstrated a maximum declining trend throughout the keremt season in the highland agroecology zone. However, rainfall distribution has become more unpredictable in the Bega and Belg seasons. Climate-resilient maize agronomic activities have been determined by analyzing the onset and cessation dates and the length of the growth period (LGP). The rainy season begins between May 8 and June 3 and finishes between October 26 and November 16. The length of the growth period (LGP) during the rainy season ranges from 94 to 229 days.
Climate Trends Spatiotemporal Analysis Agroecology Zone CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGROECOLOGY CLIMATE CLIMATE VARIABILITY MAIZE