Calidad microbiologica en tres hortalizas producidas en el Estado de México

La creciente preocupación de los consumidores por mantener una dieta sana y equilibrada, ha hecho que el consumo de hortalizas frescas aumente. Al mismo tiempo han incrementado los problemas de salud de los consumidores debido a la contaminación de alimentos por bacterias enteropatógenas, siendo las hortalizas, para consumo en fresco, las que presentan mayores posibilidades de convertirse en vehículos de microorganismos patógenos. Debido a la importancia de las hortalizas como fuente de Enfermedades Transmitidas por Alimentos (ETA). La presente investigación tuvo como objetivo determinar la calidad de origen microbiológico de plantas de lechuga (Lactuca sativa L), cilantro (Coriandrum sativum L) y espinaca (Spinacia oleracea L), producidos en Calimaya, Toluca y Tenango del Valle, Estado de México. Los estudios se realizaron durante el proceso de cosecha del ciclo de cultivo 2015, se determinó la cantidad de Mesófilos Aerobios (MA), Coliformes Totales (CT) y Coliformes Fecales (CF) presentes en 180 muestras de hortalizas, seis muestras de agua de riego y seis de suelo de cultivo. Se utilizaron las metodologías establecidas en las Normas Oficiales Mexicanas: y la Normatividad de la Organización Nacional Francesa para la Estandarización (AFNOR) NF V08-60. Se utilizó un diseño experimental completamente al azar y un análisis de varianza para localidades y una prueba de Tukey (p≤0,05). Los resultados obtenidos arrojan que, para las muestras de hortalizas, el nivel de microorganismos MA, CT y CF, se encontraron dentro de los límites máximos permisibles por las NOM. Se comprobó la presencia de bacterias CF en las hortalizas, por lo que se realizó un análisis confirmativo mediante una resiembra en medios selectivos, una comprobación bioquímica y serológica, confirmando la presencia de bacterias del género Escherichia coli del Serotipo O105 ab flagelar. Los análisis de agua de riego de la lechuga cultivada en el municipio de Calimaya sobrepasaron los límites de CF 12 UFC/mL.Universidad Autónoma del Estado de México, Facultad de Ciencias Agrícolas. Proyecto: Calidad microbiologica de tres hortalizas producidas en el Estado de México. clave: 3791/2014/CI

Glutamine Phosphoribosylpyrophosphate Amidotransferase-independent Phosphoribosyl Amine Synthesis from Ribose 5-Phosphate and Glutamine or Asparagine

Phosphoribosylamine (PRA) is the first intermediate in the common pathway to purines and thiamine and is generated in bacteria by glutamine phosphoribosylpyrophosphate (PRPP) amidotransferase (EC 2.4.2.14) from PRPP and glutamine. Genetic data have indicated that multiple, non-PRPP amidotransferase mechanisms exist to generate PRA sufficient for thiamine but not purine synthesis. Here we describe the purification and identification of an activity (present in both Escherichia coli and Salmonella enterica) that synthesizes PRA from ribose 5-phosphate and glutamine/asparagine. A purification resulting in greater than a 625-fold increase in specific activity identified 8 candidate proteins. Of the candidates, overexpression of AphA (EC 3.1.3.2), a periplasmic class B nonspecific acid phosphatase, significantly increased activity in partially purified extracts. Native purification of AphA to >95% homogeneity determined that the periplasmic L-asparaginase II, AnsB (EC 3.5.1.1), co-purified with AphA and was also necessary for PRA formation. The potential physiological relevance of AphA and AnsB in contributing to thiamine biosynthesis in vivo is discussed

Propuesta de Obligatoriedad de las Empresas a Pertenecer en el Programa Nacional de Auditoria Ambiental.

En México, la preservación del ambiente es un objetivo que generalmente suele confrontarse con otra aspiración legítima que es el crecimiento económico. En una búsqueda por aliviar la tensión que se establece entre ambos, han surgido a lo largo de la historia del país distintos instrumentos de la política ambiental, que contribuyen al fin último de la Ley General del Equilibrio Ecológico y la Protección al Ambiente, que es lograr el Desarrollo Sustentable

La retórica de la imagen en el álbum ilustrado

75 páginas. Maestría de Promoción de la Lectura y Literatura Infantil."La presente investigación atenderá a la interacción de los elementos que influyen en la comunicación dentro del álbum ilustrado y la consecuencia que ésta tiene en la construcción final del significado. Se integran así las aportaciones de dos áreas: la literaria y la de comunicación gráfica. Ambas disciplinas tendrán que considerarse y explorarse al estudiar el mensaje. Hay innumerables aspectos que podrían indagarse a este respecto: color, textura, perspectiva, elección de personajes, vestuarios, entornos… Este estudio se concentra específicamente en analizar la correlación que existe entre la retórica del lenguaje y la retórica de la imagen. El objetivo principal de este trabajo es proveer una herramienta para analizar el proceso de integración del sentido que se construye gracias al uso de las figuras retóricas en el código visual. Gracias a ella se podrá distinguir el efecto que la retórica de la imagen puede tener sobre el texto. El ámbito dentro del que se circunscribe es el de los casos reales que se encuentran en el género del álbum ilustrado".Universidad Autónoma Metropolitana (México

Quantum Key Distribution

This chapter describes the application of lasers, specifically diode lasers, in the area of quantum key distribution (QKD). First, we motivate the distribution of cryptographic keys based on quantum physical properties of light, give a brief introduction to QKD assuming the reader has no or very little knowledge about cryptography, and briefly present the state-of-the-art of QKD. In the second half of the chapter we describe, as an example of a real-world QKD system, the system deployed between the University of Calgary and SAIT Polytechnic. We conclude the chapter with a brief discussion of quantum networks and future steps.Comment: 20 pages, 12 figure

The Saint of the Sick & the Poor

The Saint of the Sick and the Poor One man’s mission to celebrate his Mexican village saint here in NYC, for those who can’t go back home By Itzel Castro New York City, United States  — Amid an altar covered with offerings of marigold flowers, stands a porcelain statue of San Lucas. Known also as “Luke the Evangelist,” the three feet tall figurine is dressed in intricately-designed vestments, made of real red silk and covered with crucifix patterns woven in gold thread. A crown on its head glimmers under the lights. “He is the saint of the village,” said Alejandro Morales, 43, a native from Puebla, Mexico and the founding organizer of the San Lucas celebration that takes place every year in Bath Beach, Brooklyn. As he moves the statue to the middle of the altar, he looks back at San Lucas and adds, “We do this in part for those who can’t go back home.” The celebration honors San Lucas, a saint beloved in San Lucas Atzala, a village in Puebla located in Central Mexico. According to the U.S. Census, in New York City, there are around 319,000 Mexican immigrants. The majority of them come from Morales’s home state of Puebla and they make up the third largest Latinx diaspora. The celebration that Morales founded gathers poblanos, people from Puebla, many of whom are undocumented and can’t go back home. In past years, thousands have attended. The celebration is community funded and it creates a sense of unity. Link to capstone project: https://www.castro2018capstone.co

Shaping Chilean Feminism

The early 1990s are marked by worldwide feminist movements and women’s suffrage. Women mobilized through feminist groups that demanded political rights, marital rights and labor rights. In the case of Chile, advocating for women’s suffrage was an extensive process that required mass unity and mobilization through agitative media. By 1935, one of the most prominent feminist leaders, Elena Cafferena, co-founded The Movement for the Emancipation of Chilean Women (MEMCH) which became a critical actor in the Chilean women\u27s rights battle. This case demonstrates how working women and “elite women” worked in collaboration for diverse demands within the movement. This paper aims to trace the Chilean feminist movement and point out which actors and political tools kept the movement alive, thus allowing for female liberation and a direct challenge to the patriarchal structure of Chilean society

From “Cowardice” to “Shellshock”: The Definition and Treatment of Mental Health in the United States Marine Corps During the Age of the Great War

The aim of my master’s thesis is to study how the United States’ Marine Corps recognized, defined, and treated mental health issues during the Great War and how this translated into the treatment of Marines by their peers and commanding officers. Similar to other countries that fought in the Great War, also referred to as World War I, the United States witnessed intense discussions about the psychological effects of war. The question of whether and how modern warfare affected troops’ mental health was addressed by all branches of the United States’ military. Yet, the issue of mental health in the Marine Corps has received little scholarly attention. To fill this gap, my thesis will analyze official Marine Corps’ documents such as protocols, orders, communiques, as well as medical reports, bulletins, and journals. In addition, it will gauge soldiers’ personal narratives such as diaries, letters, and memoirs. The analysis of these primary sources mirrors the approach taken by Joanna Bourke and is classified as a New Military History. I found a gradual shift within the Marine Corps towards acceptance of mental illness as an injury to be treated as opposed to cowardice. This was seemingly a gradual increase in recognition of mental illness as seen through various editions and publications of officer’s manuals, legislative actions, and medical journals and bulletins

How Does Bullying Affect Females in School?

Bullying is a major issue that schools are still having issues with. Students today are being bullied the most during their middle school years. In order to understand how we can address these issues and prevent it from continuing in this community, this report answers the following research questions: Is bullying a problem and why? What are the solutions or interventions to prevent bullying? What changes from elementary schools to middle schools that increase bullying for females? And how can we prevent females from bullying or becoming victimized? In a review of the literature on bullying from a female\u27s perspective, the research shows that females are usually victimized by other females through social and verbal threats. This issue ranges from spreading rumors to exclusion of others. Another reason females are bullied is because of puberty. Another important finding is that female perpetrators use relational aggression to bully others. This report presents an interview of a local middle school to see what measures they have against bullying. The findings after conducting the interview showed that a major component to bullying in middle school is social media. The bullying continues to follow victims’ homes because of social media opportunities. The recommendation to prevent bullying is an informational blog or flyer, in both English and Spanish, for parents that addresses the impact that social media has on bullying and several tips for parents to reduce bullying in this community

My First Year Research Experience

Hello, my name is Itzel Guillen. I am a graduate of Rio Grande High School, and a freshman at UNM. I am a participant in the FYRE (First Year Research Experience) program. FYRE gave me the opportunity to work more on a project that I participated in while I was in high school: RAPS. My research interest is the response of adults who were part of the project. As a freshman, finding a mentor can be hard. Many students need more experience, but there may not be many open opportunities. For my mentor, I contacted Courtney FitzGerald at the UNM PRC. I met Courtney through the RAPS project while I was in high school. For FYRE, I wanted to work with RAPS project data. I was able to do this with Courtney as my mentor.https://digitalrepository.unm.edu/prc-posters-presentations/1000/thumbnail.jp