2,130 research outputs found
Impact of the Deficiency of Micronutrients on Patients with HIV/Aids
Introduction: HIV-AIDS is an infectious disease that damages the immune system, putting you at risk of serious infections and certain types of cancer. Micronutrient deficiency varies widely, depending on the population and stage of the disease. It can contribute to the weakening of the immune state and the worsening of the physical condition. Objective: To identify through the collection of nutritional information the consequences produced by the lack of micronutrients in patients with HIV-AIDS. Methodology: It was carried out through bibliographic reviews, scientific articles in order to find true and proven information on the effect that micronutrient deficiency has on people with HIV/AIDS. Results: It is shown that clinical deficiencies of some nutrients occur rapidly in response to dietary deficiencies, malabsorption, or altered metabolism, while those nutrients that have reserves in the body take longer to deplete. Discussion: The acquired immunodeficiency virus that causes AIDS; is associated with weight loss due to malnutrition. There are foods that can counteract many of the symptoms of the patient with HIV/AIDS, hence the importance of their knowledge. Conclusion: Micronutrient deficiency influences the immune system, accentuating the immunodeficiency that leads to AIDS. People living with this disease should have a balanced diet with Vitamins A, B, zinc and iron to strengthen the immune system, these offer a safe and economical treatment to slow the progression of the infection.
Keywords: micronutrients, HIV, AIDS.
RESUMEN
Introducción: El VIH-SIDA es una enfermedad infecciosa que daña el sistema inmunitario lo que pone en riesgo de contraer infecciones graves y ciertos tipos de cáncer. La deficiencia de micronutrientes varía ampliamente, según la población y el estadio de la enfermedad; puede contribuir al debilitamiento del estado inmune y al empeoramiento de la condición física. Objetivo: Identificar mediante la recopilación de información nutricional las consecuencias que produce la falta de micronutrientes en pacientes con VIH-SIDA. Metodología: Se realizó a través de revisiones bibliográficas, artículos científicos con el fin de encontrar información verídica y comprobada del efecto que tiene la deficiencia de micronutrientes en personas con VIH/SIDA. Resultados: Se demuestra que las deficiencias clínicas de algunos nutrientes ocurren rápidamente en respuesta a deficiencias dietéticas, malabsorción, o metabolismo alterado, mientras que aquellos nutrientes que tienen reservas en el cuerpo tardan más en agotarse. Discusión: El virus de la inmunodeficiencia adquirida causante del SIDA; está asociada con la pérdida de peso por malnutrición. Hay muchos alimentos del grupo de los micronutrientes que minimizan manifestaciones clínicas en los enfermos el síndrome de inmunodeficiencia adquirida, siendo necesario saber cuáles son. Conclusiones: La deficiencia de micronutrientes influye en el sistema inmune, acentuando la inmunodeficiencia que lleva al SIDA. Las personas que viven con esta enfermedad deben tener una dieta balanceada con Vitaminas A, B, zinc y hierro para fortalecer el sistema inmunológico, estas ofrecen un tratamiento seguro y económico para retardar la progresión de la infección.
Palabras claves: micronutrientes, VHI, SIDA
The global oscillation network group site survey. II. Results
The Global Oscillation Network Group (GONG) Project will place a network of instruments around the world to observe solar oscillations as continuously as possible for three years. The Project has now chosen the six network sites based on analysis of survey data from fifteen sites around the world. The chosen sites are: Big Bear Solar Observatory, California; Mauna Loa Solar Observatory, Hawaii; Learmonth Solar Observatory, Australia; Udaipur Solar Observatory, India; Observatorio del Teide, Tenerife; and Cerro Tololo Interamerican Observatory, Chile.
Total solar intensity at each site yields information on local cloud cover, extinction coefficient, and transparency fluctuations. In addition, the performance of 192 reasonable components analysis. An accompanying paper describes the analysis methods in detail; here we present the results of both the network and individual site analyses.
The selected network has a duty cycle of 93.3%, in good agreement with numerical simulations. The power spectrum of the network observing window shows a first diurnal sidelobe height of 3 × 10⁻⁴ with respect to the central component, an improvement of a factor of 1300 over a single site. The background level of the network spectrum is lower by a factor of 50 compared to a single-site spectrum
Evidencia Empírica de la Minería de Procesos en la Implantación de CMMI-DEV
Resumen: La minería de procesos tiene como objetivo descubrir, monitorear y mejorar procesos a través del análisis de los diversos registros de eventos generados por los procesos de la organización. El objetivo de este trabajo es presentar la evidencia empírica de la inclusión estratégica de la disciplina de minería de procesos en proyectos de mejora de procesos de software implementados con CMMI. En el proceso de mapeo sistemático de la revisión de la literatura, se establecieron cuatro categorías para clasificar los hallazgos encontrados (Fundamentos teóricos, propuestas, herramientas y sistemas de información y algoritmos) para presentar los estudios que cumplen con el objetivo. Se concluye que la interdisciplinariedad de la minería de procesos con un modelo de referencia de procesos como CMMI-DEV apoya la implementación y evaluación de las áreas de procesos, al aplicar técnicas y algoritmos de minería de procesos que faciliten la exploración y explotación de los registros de eventos relacionados a la ejecución de las actividades almacenados en un repositorio. Palabras clave: Minería de Procesos, Mejora de Procesos de Software, Registro de Eventos
Microbiota intestinal y alergia a las proteínas de la leche de vaca en la infancia. ¿Tenemos novedades?
Trabajo presentado en el XLVI Congreso de la Sociedad Española de Inmunología Clínica, Alergología y Asma Pediátrica, celebrado en Oviedo (España), del 5 al 7 de mayo de 2022Objetivo / Caso Clínico: Introducción:
Se ha demostrado la existencia de relaciones entre
la microbiota y alergias alimentarias durante los dos
primeros años de vida, siendo la alergia a proteínas
de la leche de vaca (APLV) la más frecuente. Nuestro
objetivo fue analizar características clínico-epidemiológicas y la microbiota intestinal según el mecanismo inmunológico tratando de buscar asociaciones que faciliten el manejo en APLV.
Material y Métodos / Caso Clínico: Descripción
del caso:
Estudio descriptivo, multicéntrico con una cohorte
de APLV menores de un año reclutados al diagnóstico a lo largo de un año en tres hospitales. Grupo
control de lactantes sanos de 6 meses reclutados
en centros de atención primaria. Criterios de exclusión: alergias alimentarias/enteropatía, antibiótico/
corticoide/probiótico el mes previo, gastroenteritis,
síndrome de enterocolitis inducida por proteínas.
Resultados / Caso Clínico: Comentarios:
47 participantes: 14 IgE, 8 no IgE y 25 controles. No
diferencias significativas en sexo, parto, somatometría o tipo de lactancia, pero sí en la media de
edad; siendo en IgE 6.45 meses y 3.38 en no IgE. Los
síntomas más frecuentes fueron los cutáneos en IgE
(78.6%) y el reflujo gastroesofágico en no IgE (75%).
En IgE mediados, el 71, 4% fue positivo a seroproteínas frente a un 57, 1% a caseína. Se observaron
diferencias significativas en la composición de la
microbiota en la abundancia relativa del filo Bacteroidetes (17% en IgE, 6.9% en no IgE y 9.6% en controles). El filo Actinobacterias se encontró en mayor
proporción en controles (60.9%) frente a casos.
Conclusiones:
Además de evaluar las características clínico-epidemiológicas de menores de 1 año con diagnóstico
de APLV en nuestra región, se ha realizado un estudio comparativo de la microbiota intestinal con
controles sanos, encontrándose diferencias entre
las poblaciones microbianas en función de la fisiopatología de la APLV que refuerzan la interacción
entre alergia alimentaria y microbiota intestinal en
lactantes y nos permitirán mejorar el abordaje clínico y la intervención en los distintos casos de APL
Three-dimensional lattice-Boltzmann simulations of critical spinodal decomposition in binary immiscible fluids
We use a modified Shan-Chen, noiseless lattice-BGK model for binary
immiscible, incompressible, athermal fluids in three dimensions to simulate the
coarsening of domains following a deep quench below the spinodal point from a
symmetric and homogeneous mixture into a two-phase configuration. We find the
average domain size growing with time as , where increases
in the range , consistent with a crossover between
diffusive and hydrodynamic viscous, , behaviour. We find
good collapse onto a single scaling function, yet the domain growth exponents
differ from others' works' for similar values of the unique characteristic
length and time that can be constructed out of the fluid's parameters. This
rebuts claims of universality for the dynamical scaling hypothesis. At early
times, we also find a crossover from to in the scaled structure
function, which disappears when the dynamical scaling reasonably improves at
later times. This excludes noise as the cause for a behaviour, as
proposed by others. We also observe exponential temporal growth of the
structure function during the initial stages of the dynamics and for
wavenumbers less than a threshold value.Comment: 45 pages, 18 figures. Accepted for publication in Physical Review
Ocean Surface Winds Drive Dynamics of Transoceanic Aerial Movements
Global wind patterns influence dispersal and migration processes of aerial organisms, propagules and particles, which ultimately could determine the dynamics of colonizations, invasions or spread of pathogens. However, studying how wind-mediated movements actually happen has been hampered so far by the lack of high resolution global wind data as well as the impossibility to track aerial movements. Using concurrent data on winds and actual pathways of a tracked seabird, here we show that oceanic winds define spatiotemporal pathways and barriers for large-scale aerial movements. We obtained wind data from NASA SeaWinds scatterometer to calculate wind cost (impedance) models reflecting the resistance to the aerial movement near the ocean surface. We also tracked the movements of a model organism, the Cory's shearwater (Calonectris diomedea), a pelagic bird known to perform long distance migrations. Cost models revealed that distant areas can be connected through “wind highways” that do not match the shortest great circle routes. Bird routes closely followed the low-cost “wind-highways” linking breeding and wintering areas. In addition, we found that a potential barrier, the near surface westerlies in the Atlantic sector of the Intertropical Convergence Zone (ITCZ), temporally hindered meridional trans-equatorial movements. Once the westerlies vanished, birds crossed the ITCZ to their winter quarters. This study provides a novel approach to investigate wind-mediated movements in oceanic environments and shows that large-scale migration and dispersal processes over the oceans can be largely driven by spatiotemporal wind patterns
Ocean Surface Winds Drive Dynamics of Transoceanic Aerial Movements
Global wind patterns influence dispersal and migration processes of aerial organisms, propagules and particles, which ultimately could determine the dynamics of colonizations, invasions or spread of pathogens. However, studying how wind-mediated movements actually happen has been hampered so far by the lack of high resolution global wind data as well as the impossibility to track aerial movements. Using concurrent data on winds and actual pathways of a tracked seabird, here we show that oceanic winds define spatiotemporal pathways and barriers for large-scale aerial movements. We obtained wind data from NASA SeaWinds scatterometer to calculate wind cost (impedance) models reflecting the resistance to the aerial movement near the ocean surface. We also tracked the movements of a model organism, the Cory's shearwater (Calonectris diomedea), a pelagic bird known to perform long distance migrations. Cost models revealed that distant areas can be connected through “wind highways” that do not match the shortest great circle routes. Bird routes closely followed the low-cost “wind-highways” linking breeding and wintering areas. In addition, we found that a potential barrier, the near surface westerlies in the Atlantic sector of the Intertropical Convergence Zone (ITCZ), temporally hindered meridional trans-equatorial movements. Once the westerlies vanished, birds crossed the ITCZ to their winter quarters. This study provides a novel approach to investigate wind-mediated movements in oceanic environments and shows that large-scale migration and dispersal processes over the oceans can be largely driven by spatiotemporal wind patterns
Measurement of the cross-section and charge asymmetry of bosons produced in proton-proton collisions at TeV with the ATLAS detector
This paper presents measurements of the and cross-sections and the associated charge asymmetry as a
function of the absolute pseudorapidity of the decay muon. The data were
collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with
the ATLAS experiment at the LHC and correspond to a total integrated luminosity
of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements
varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the
1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured
with an uncertainty between 0.002 and 0.003. The results are compared with
predictions based on next-to-next-to-leading-order calculations with various
parton distribution functions and have the sensitivity to discriminate between
them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables,
submitted to EPJC. All figures including auxiliary figures are available at
https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13
Charge separation relative to the reaction plane in Pb-Pb collisions at TeV
Measurements of charge dependent azimuthal correlations with the ALICE
detector at the LHC are reported for Pb-Pb collisions at TeV. Two- and three-particle charge-dependent azimuthal correlations in
the pseudo-rapidity range are presented as a function of the
collision centrality, particle separation in pseudo-rapidity, and transverse
momentum. A clear signal compatible with a charge-dependent separation relative
to the reaction plane is observed, which shows little or no collision energy
dependence when compared to measurements at RHIC energies. This provides a new
insight for understanding the nature of the charge dependent azimuthal
correlations observed at RHIC and LHC energies.Comment: 12 pages, 3 captioned figures, authors from page 2 to 6, published
version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/286
Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at = 5.02 TeV
Two-particle angular correlations between unidentified charged trigger and
associated particles are measured by the ALICE detector in p-Pb collisions at a
nucleon-nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum
range 0.7 5.0 GeV/ is examined,
to include correlations induced by jets originating from low
momen\-tum-transfer scatterings (minijets). The correlations expressed as
associated yield per trigger particle are obtained in the pseudorapidity range
. The near-side long-range pseudorapidity correlations observed in
high-multiplicity p-Pb collisions are subtracted from both near-side
short-range and away-side correlations in order to remove the non-jet-like
components. The yields in the jet-like peaks are found to be invariant with
event multiplicity with the exception of events with low multiplicity. This
invariance is consistent with the particles being produced via the incoherent
fragmentation of multiple parton--parton scatterings, while the yield related
to the previously observed ridge structures is not jet-related. The number of
uncorrelated sources of particle production is found to increase linearly with
multiplicity, suggesting no saturation of the number of multi-parton
interactions even in the highest multiplicity p-Pb collisions. Further, the
number scales in the intermediate multiplicity region with the number of binary
nucleon-nucleon collisions estimated with a Glauber Monte-Carlo simulation.Comment: 23 pages, 6 captioned figures, 1 table, authors from page 17,
published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/161
- …