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marwa laribi (2021)
El objetivo del presente es describir de qué manera la intervención logoterapéutica ayuda en el afrontamiento del duelo al Paciente Terminal y a su Cuidador Primario en el área de Cuidados Paliativos en un Hospital al Norte del Estado de México permitiéndoles tener una calidad de vida óptima por medio de la comunicación asertiva y la identificación del sentido de vida; la metodología fue de carácter mixto, con enfoque dominante cualitativo. El procedimiento se desarrolló en siete fases: 1) Encuadre, 2) Evaluación (se utilizaron la entrevistas semi-estructuradas, el Logotest y el Cuestionario de Evaluación de Funcionamiento Familiar como herramientas para la valoración de los casos), 3) Diagnóstico, 4) Intervención basada en tareas de Terapia Breve y técnicas logoterapéuticas, 5) Post aplicación del Logotest en Cuidadores Primarios 6) Resultados y 7) Seguimiento. Participaron pacientes con pronóstico de vida terminal y sus cuidadores primarios. El análisis estadístico y del discurso demuestran que la Logoterapia es una alternativa efectiva en el afrontamiento del duelo en el Cuidador Primario, de igual forma la Logoterapia en el Paciente Terminal permite que afronte propositivamente su condición, por ende al hacer consciente su proceso de muerte, le da la oportunidad de revalorar y alcanzar la plenitud de su existencia.
Coloración en la lagartija Aspidoscelis costatus costatus
Whiptail lizards in the sexlineatus species group (genus Aspidoscelis) in North America represent some of the most challenging patterns of variation in the North American herpetofauna. The range of color patterns in these populations is based on individual, ontogenetic, sexual, seasonal, and/or geographic variation. We studied representatives of a population of Western Mexico Whiptail (A. costatus costatus) from a protected private enclave of approximately 0.27 ha in the municipality and city of Ixtapan de la Sal, Estado de México, México. We captured 50 lizards in 2016 and 24 in 2018, most of which we photographed ex situ and a few in situ. These photographs revealed that a variety of age/size related dorsal and ventral patterns were consistently present. Males progressed through five stages of dorsal pattern changes from pale stripes, dark intervening fields, no spots to spots, and diverse pale configurations set in a black ground color. Females in this population showed similar changes but did not lose striping as they grew. Ontogenetic changes in ventral color patterns were also apparent, with males becoming more colorful than females. The adaptive significance of extensive color pattern variation in this urban population of A. c. costatus warrants further study.
A two-stage in vitro procedure was used for assessing the activity of parotid saliva to enhance rumen digestion of tanniniferous browse foliage. The procedure consisted of pre-incubation in saliva for 4 h at 39 °C followed by incubation in diluted buffered rumen fluid. Using this procedure, a study was conducted to examine the effects of pre-incubation in sheep (SS), quebracho-supplemented sheep (qSS) and goat (GS) parotid saliva or in McDougall’s artificial saliva (AS, used as control) on in vitro rumen fermentation kinetics (estimated using the gas production technique) of browse foliage from six shrub species (Cytisus scoparius, Genista florida, Rosa canina, Quercus pyrenaica, Cistus laurifolius and Erica australis) collected over two seasons (spring and autumn), thus varying the in vitro digestibility (from 0·597 to 0·903) and tannin contents (from3 to 130 g tannic acid equivalent/kg dry matter (DM)). Saliva was collected from four sheep and four goats fed alfalfa hay, and fromfour sheep fed the same alfalfa hay but supplemented with quebracho (rich in condensed tannins) for 60 d, through a cannula inserted in the parotid duct, and rumen fluid was always from sheep fed alfalfa hay. The extent of degradation when browse foliage was pre-incubated in qSS was similar to that observed with control AS (0·449 v. 0·452, respectively), and 8% less than the value with pre-incubation in SS (0·490). In vitro fermentation kinetics (gas production parameters) of browse foliage were not significantly enhanced with pre-incubation in qSS compared with SS, whereas in vitro digestibility and extent of degradation in the rumen were significantly reduced with qSS compared with SS. After pre-incubation in sheep and goat saliva, the extent of browse foliage degradation was significantly increased by 4–8% compared with pre-incubation in the control AS. Fermentation efficiency of browse foliage was increased (P<0·05) with pre-incubation in GS compared with SS. Sheep or goat saliva may have some activity to affect in vitro rumen fermentation of the foliage samples incubated, enhancing extent of degradation of tannin-rich browse. However, a relationship between the magnitude of this effect and the tannin content of the browse foliage could not be established, suggesting that sheep and goat saliva may not be particularly important in neutralizing tannins.
"Umbilical cord blood transplantation is clinically limited by its low progenitor cell content. Ex vivo expansion has become an alternative to increase the cell dose available for transplants. Expansion has been evaluated in several ways such as static cultures combining growth factors or mimicking the natural microenvironment using co-culture systems. However, static cultures have a small volume capacity and therefore large-scale expansion has been addressed using bioreactors. These and other biotechnological approaches for the expansion of hematopoietic progenitors and their utility to study several aspects of hematopoietic stem cell biology are discussed here."
NELSON PATRICIO BRAVO YUMI (2021)
Los colorantes industriales de uso común en la industria de la curtiduría son contaminantes que provocan problemas muy graves en la salud de los seres vivos. Por esta razón, se buscan nuevos métodos que sean eficientes para su degradación. En este trabajo de investigación, la degradación de tres colorantes industriales fue estudiada mediante electro-oxidación (DSA) y electro-Fenton (BDD), a escala laboratorio y pre-piloto (reactor FM01-LC). Las electrólisis de los colorantes Verde A, Violeta RL, y Pardo DR se efectuaron analizando las variables: pH, concentración inicial de colorante, tipo y cantidad de electrolito soporte, densidad de corriente, y, para el reactor pre-piloto, además, se evaluó la velocidad de flujo. A Escala de laboratorio, más del 90% del colorante fue degradado, en un tiempo de 60 minutos. Por su parte, a escala pre-piloto se alcanzó el 95% de remoción de DQO, en un tiempo de 60 minutos. La cinética de remoción de DQO, a escala pre-piloto, se caracteriza por una mayor rapidez, si se comparada con la cinética a escala de laboratorio.
Al incrementar la densidad de corriente aplicada el porcentaje de decoloración aumenta, al igual que, si se emplea un pH ácido en las electrólisis de los colorantes. Las velocidades de flujo estudiadas en el reactor FM01 (12 L min-1 y 7.5 L min-1), indican que existe un ligero aumento en la decoloración de los colorantes, cuando se emplea 7.5 L min-1, puesto que, se obtiene una mejor transferencia de masa.
La decoloración y degradación de los colorantes se analizó mediante UV-Vis y DQO. La identificación de ácidos carboxílicos, partículas de cadena corta resultantes de la degradación, se identificaron a través de Cromatografía Líquida de Alta Eficiencia (HPLC).
Azo dyes are a widely used in tannery industry and typical toxic pollutants that causes serious problems for human beings. Therefore, it is important to find new methods for its degradation. In this research the degradation of the three azo dyes has been studied by electro-oxidation (DSA) and electro-Fenton (BDD) on a laboratory and pre pilot scale.
Electrolysis of Green A, Brown DR, and Violet RL were performed by analyzing pH, current density, dyes concentration, support electrolytes, and flow rate. On laboratory scale more than 90% of the dyes was degraded at 60 minutes. On the other hand, on pre pilot scale 95% COD removal was achieved in 60 minutes. The COD removal kinetics on pre-pilot scale is faster than laboratory scale.
By increasing the applied current density, the decolorization percentage increases, the same effect occurs when pH is 3. Flow rates studied -12 L min-1 y 7.5 L min-1- in FM01 reactor show that there is a slight increase in decolorization of the dyes when 7.5 L min-1 was used, due to better mass transfer.
Discoloration and degradation of the dyes was analyzed by UV-Vis and COD. Carboxyl acids were identified through High Performance Liquid Chromatography (HPLC).
CGU- Doctorado en Ciencias Químicas (Tradicional) BIOLOGÍA Y QUÍMICA QUÍMICA ORGÁNICA QUÍMICA Colorantes – Degradación electroquímica Industria de la curtiduría Electro-oxidación DSA (Ánodos Dimensionalmente Estables) Electro-Fenton BDD (Diamante Dopado de Boro) Colorantes industriales HPLC (Cromatografía Líquida de Alta Eficiencia) Coloring - Electrochemical Degradation Tannery industry Electro-oxidation DSA (Dimensionally Stable Anodes) Electro-Fenton BDD (Boron Doped Diamond) Industrial dyes HPLC (High Performance Liquid Chromatography)
Eight Merino sheep (49.4 ± 4.23 kg BW) and 8 Alpine goats (53.2 ± 2.51 kg BW) were used to study the effect of ingestion of quebracho tannins on salivation. Four sheep and 4 goats were individually fed a daily allotment of 20 g DM of alfalfa hay/kg BW (Control). Another 4 sheep and 4 goats were also given 20 g DM of alfalfa hay/kg BW supplemented with 50 g of quebracho/kg DM (Tannin) for a period of 64 d. The saliva secretion from the left parotid gland was collected by insertion of a polyvinyl chloride catheter into the parotid duct and the amount of parotid saliva produced recorded over three 48-h periods on d 1 and 2 (P1), d 31 and 32 (P2), and d 61 and 62 (P3) after the tannin feeding was initiated. The total amount of saliva produced was estimated from rumen water kinetics determined on d 4, d 34, and d 64 of the experiment. Experimental design was completely randomized, with repeated measures on each experimental unit, performing separate analysis for sheep and goats. Parotid saliva production was not affected by the sampling period in either animal species receiving the Control diet. Corresponding values for sheep were 2.04, 2.12, and 2.27 L/d (P = 0.89) and for goats 1.65, 1.79, and 1.86 L/d (P = 0.95). Sheep fed the Tannin diet produced 55, 73, and 107% of the amount of saliva recorded in sheep fed the Control diet on P1, P2, or P3, respectively. Corresponding values in goats were 88, 130, and 134% on P1, P2, or P3, respectively. Estimated total saliva production was not affected (P = 0.50 for sheep and P = 0.97 for goats) by the ingestion of quebracho. There was no difference (P > 0.10) in osmotic pressure, P, Mg, Ca, urea, and protein concentrations in parotid saliva. There were, however, differences in Na and K concentrations in response to the ingestion of quebracho tannins, with Na concentrations increasing (P = 0.05) and K concentrations decreasing (P = 0.04) in sheep saliva and pH increasing (P = 0.05) in goat saliva. In conclusion, the inclusion of quebracho at 50 g/kg DM for 64 d does not appear to alter saliva production in sheep and goats.
Demographic growth and consequent land-use changes are consid - ered one of the main factors causing inundations in many cities in de - veloping countries. During the last decade, the city of Colima, Mexico, has suffered from an increase in flooding events. These episodes mostly occurred during tropical rainstorms associated to hurricanes (such as Jova in 2011, Manuel in 2013, and Patricia in 2015, all with average accumulated rainfall of 200 mm in 24 h), as well as during short- duration, high-intensity rainfall events at the beginning of the rainy season. To define the mechanisms leading to the increased occurrence of floodings, a space-time analysis of land-use changes, coupled with the characterization of natural and urban soils, are presented here for the Colima metropolitan area. Three land-use categories were created: native land (N1), urban land (N4), and cultivated land (N5). Each of these categories has subcategories depending on vegetative cover and/ or level of urbanization. SPOT imagery acquired in 2005, 2009, and 2015 was classified to analyze the spatial and temporal changes in land use. Thirty-two soil samples representative of different land uses were analyzed to obtain their physical and chemical properties such as granulometry, bulk and particle densities, porosity, and organic matter content. Hydraulic conductivity tests were performed in situ using a drip-infiltrometer device. The temporal and spatial analysis of SPOT images revealed that most changes in land use correspond to urban area and cultivated land, the former showing an increase and the latter a drastic decrease, especially towards the northern part of the city, where urban growth is evident for the 20052009 period. Analyzed soils from cultivated land have the highest permeability, and engineered soils correspond to the least permeable soils in the area; consequently, replacement of agriculture with housing has significant impacts on the rainfall-runoff process. These results indicate that as more permeable land area is substituted by disturbed urban soils, the infiltration capability will be reduced, leading to increasing flooding frequency in the Colima-Villa de Álvarez metropolitan area. To prevent and reduce the disruptive im - pact of inundation in the Colima metropolitan area, it is recommended to have adequate management of land-use change and to conserve the permeable areas around the city. In addition, it is necessary to revise the hydraulic infrastructure of the existing urban areas and to properly define the most suitable locations for future ones. Avoiding develop - ment in flood-prone areas through planning and zoning ordinances may reduce loss of life and damage to property.
Ciencias de la Tierra Flooding land use hydraulic conductivity SPOT images Colima Mexico Ciencias de la Tierra Flooding land use hydraulic conductivity SPOT images Colima Mexico CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA