On star-forest ascending subgraph decomposition

Preprin

Sistema de financiación de las Universidades Públicas Andaluzas

En el presente documento se pretende dar a conocer la estructura del sistema universitario público andaluz y la forma en la que obtiene la financiación para desarrollar su operativa. Se intentará explicar detalladamente los modelos de financiación más recientes con los que ha contado el SUPA para ello se pretende explicar la composición y estructura de la educación superior andaluza para esclarecer cuestiones básicas antes de pasar a definir los modelos de financiación tanto de 2007 como la última propuesta de 2017. Es necesario para ello conocer estas cuestiones junto con los objetivos generales como los estratégicos y las funciones que desarrollan, las cuales son docencia, investigación y transferencia de conocimiento.Universidad de Sevilla. Grado en Finanzas y Contabilida

Aplicación de campos eléctricos moderados para la inactivación de esporas de Aspergillus niger en una emulsión

[ES] El proceso de inactivación microbiana es de gran interés en la industria alimentaria, debido a la necesidad de garantizar la calidad y seguridad en los productos consumidos por la población. En la actualidad, el procesado de alimentos líquidos para la inactivación de microorganismos a escala industrial suele realizarse en mayor medida a través de tratamientos térmicos que alcanzan temperaturas (T) elevadas, mayores a 100ºC. Sin embargo, estas temperaturas producen pérdidas de sabor y nutrientes que son esenciales en el producto final. Además, los tratamientos térmicos convencionales suponen un tiempo (t) de procesado y un coste energético elevados. Por este motivo, la inactivación microbiana constituye un amplio campo de investigación, donde se buscan nuevas tecnologías de inactivación no térmicas, que sean más eficientes. En este sentido, algunos ejemplos de ello son los ultrasonidos, el procesado a altas presiones hidrostáticas, los campos eléctricos pulsados (del inglés PEF) o los campos eléctricos moderados (del inglés MEF). La tecnología MEF empleada en el presente estudio, consiste en la aplicación de campos eléctricos inferiores a 1 kV/cm a temperaturas relativamente moderadas (normalmente inferiores a 100ºC). A pesar de la relevancia en la aplicación de estas tecnologías de inactivación microbiana en la industria alimentaria, no se descarta su uso para otros fines, como por ejemplo para sueros o fluidos fisiológicos de industrias farmacéuticas. Así pues, el objetivo del presente trabajo fue el estudio de la inactivación de esporas de A.niger en una emulsión haciendo uso de la tecnología MEF. Para ello, se aplicaron perfiles de temperatura-tiempo a diferentes voltajes y frecuencias. Los resultados mostraron mayor eficacia (p6 ciclos logarítmicos) de las esporas de A.niger. No obstante, es de interés resaltar que los efectos del voltaje y la frecuencia no han resultado significativos (p>0,05) en los rangos estudiados en el presente trabajo. Adicionalmente, sería necesario estudiar el efecto del tratamiento sobre la calidad de la emulsión tratada.[EN] Microbial inactivation is of great interest in the food industry, due to the need to guarantee the quality and safety of the products consumed by the population. Nowadays, liquid foods processing for inactivation of microorganisms on an industrial scale is mainly carried out by thermal treatments that reach high temperatures (T), greater than 100ºC. However, these temperatures cause loss of flavors and nutrients, which are essential in the final product. In addition, conventional thermal treatments involve high processing time (t) and energy costs. For this reason, microbial inactivation is of great interest for investigation in the food industry. In this way, new non thermal inactivation technologies, which are more efficient, are being studied. Some examples of them are ultrasounds, high hydrostatic pressures, pulsed electric fields (PEF) or moderate electric fields (MEF). The MEF technology used in this study is based on the application of electric fields lower than 1 kV/cm at relatively moderate temperatures (usually lower than 100ºC). Despite the relevance of the application of these microbial inactivation technologies in the food industry, other uses are not discarded, such as for microbial inactivation in serum or physiological fluids for pharmaceutical industries.Thus, the objective of the present work was the study of the inactivation of A.niger spores in an emulsion with MEF technology. For this purpose, temperature-time profiles at different voltages and frequencies were applied. Results showed greater efficacy (p 6 logarithmic cycles) of A.niger spores in an emulsion was reached. However, it is necessary to highlight that the effects of voltage and frequency have not been significant (p>0,05) in the ranges considered in the present study. Additionally, it would be necessary to study the effect of the treatment on the quality of the treated emulsion.Lozano Aroca, MA. (2021). Aplicación de campos eléctricos moderados para la inactivación de esporas de Aspergillus niger en una emulsión. Universitat Politècnica de València. http://hdl.handle.net/10251/174077TFG

On star forest ascending subgraph decomposition

The Ascending Subgraph Decomposition (ASD) Conjecture asserts that every graph G with (n+12) edges admits an edge decomposition G=H1¿¿¿Hn such that Hi has i edges and it is isomorphic to a subgraph of Hi+1, i=1,…,n-1. We show that every bipartite graph G with (n+12) edges such that the degree sequence d1,…,dk of one of the stable sets satisfies dk-i=n-ifor each0=i=k-1, admits an ascending subgraph decomposition with star forests. We also give a necessary condition on the degree sequence which is not far from the above sufficient one.Peer ReviewedPostprint (author's final draft

Experiencias físicas, verbales y psicológicas de violencia de género hacia los hombres en el programa de psicología de la Corporación Universitaria Minuto de Dios Vicerrectoría Llanos.

Identificar las experiencias físicas, verbales y psicológicas de la violencia de género hacia el hombre en el programa de psicología de la Universidad Uniminuto Vicerrectoría Llanos.La presente investigación se realizó con la Corporación Universitaria Minuto de Dios vicerrectoría Llanos en el año 2017, teniendo como objeto de estudio del proyecto los estudiantes hombres y mujeres del programa de Psicología. El propósito de esta investigación consistió en la identificación de la violencia de género hacia los hombres en sus distintas formas; para lograr esto, fue necesario establecer si los estudiantes primeramente reconocían la violencia de género hacia el hombre y seguido de esto, como eran las diferentes expresiones de dicha violencia. A partir de la información recolectada por medio de grupos focales se encontró que los estudiantes del programa de Psicología reconocen que la violencia de género hacia el hombre existe y que sus distintas manifestaciones incluyen las mismas que se presentan en la violencia de género hacia la mujer, más no se obtiene la misma atención, apoyo y protección por parte de las entidades encargadas, además teniendo un añadido particular en los hombres y es la limitación de algunos comportamientos, actitudes, gestos y expresión de sentimientos que son inculcados desde la infancia al varón, provocando así que no se tenga un libre desarrollo psico-social. Así mismo se encuentra que otra de las problemáticas visibles dentro de la violencia de género hacia el hombre está en que él no denuncia, las razones siendo entre algunas: la vergüenza, el desconocimiento a cuál es el procedimiento legal a seguir para denunciar, el estigma social, etc.This research was made with the Corporación Universitaria Minuto de Dios, Vicerrectoría Llanos in 2017, the subject of this project were the students of the Psychology program. The purpose of this research was to identify any type of gender violence against men, to made this was necessary to establish whether students were able to identify gender violence against men and then the different forms of it, from the information collected through focus groups it was found that the students of the Psychology program actually identify the presence of gender violence against men in the same ways that is present against women, but they also found that there are no the same attention, support and protection from the institutions in charge. Men also have some limitations in behavior, attitude, gesture and the way they show their feelings, as a result of the parental and family education, these limitations are taught to boys since their childhood what gives a poor psycho-social development. Another main problem within the gender violence against men is that they don’t denounce the attacks, being the principal reasons: shame, lack of knowledge to take a proper legal procedure, social stigma, etc

On star forest ascending subgraph decomposition

The Ascending Subgraph Decomposition (ASD) Conjecture asserts that every graph G with (n+12) edges admits an edge decomposition G=H1¿¿¿Hn such that Hi has i edges and it is isomorphic to a subgraph of Hi+1, i=1,…,n-1. We show that every bipartite graph G with (n+12) edges such that the degree sequence d1,…,dk of one of the stable sets satisfies dk-i=n-ifor each0=i=k-1, admits an ascending subgraph decomposition with star forests. We also give a necessary condition on the degree sequence which is not far from the above sufficient one.Peer ReviewedPostprint (author's final draft

Cysteine and cysteine-related signaling pathways in arabidopsis thaliana

Cysteine occupies a central position in plant metabolism because it is a reduced sulfur donor molecule involved in the synthesis of essential biomolecules and defense compounds. Moreover, cysteine per se and its derivative molecules play roles in the redox signaling of processes occurring in various cellular compartments. Cysteine is synthesized during the sulfate assimilation pathway via the incorporation of sulfide to O-acetylserine, catalyzed by O-acetylserine(thiol)lyase (OASTL). Plant cells contain OASTLs in the mitochondria, chloroplasts, and cytosol, resulting in a complex array of isoforms and subcellular cysteine pools. In recent years, significant progress has been made in Arabidopsis, in determining the specific roles of the OASTLs and the metabolites produced by them. Thus, the discovery of novel enzymatic activities of the less-abundant, like DES1 with L-cysteine desulfhydrase activity and SCS with S-sulfocysteine synthase activity, has provided new perspectives on their roles, besides their metabolic functions. Thereby, the research has been demonstrated that cytosolic sulfide and chloroplastic S-sulfocysteine act as signaling molecules regulating autophagy and protecting the photosystems, respectively. In the cytosol, cysteine plays an essential role in plant immunity; in the mitochondria, this molecule plays a central role in the detoxification of cyanide, which is essential for root hair development and plant responses to pathogens.Ministerio de Economía y Competitividad BIO2010-15201Junta de Andalucía CVI-719

Signaling in the plant cytosol: cysteine or sulfide?

Cysteine (Cys) is the first organic compound containing reduced sulfur that is synthesized in the last stage of plant photosynthetic assimilation of sulfate. It is a very important metabolite not only because it is crucial for the structure, function and regulation of proteins but also because it is the precursor molecule of an enormous number of sulfur-containing metabolites essential for plant health and development. The biosynthesis of Cys is accomplished by the sequential reaction of serine acetyltransferase (SAT) and O-acetylserine(thiol)synthase (OASTL). In Arabidopsis thaliana, the analysis of specific mutants of members of the SAT and OASTL families has demonstrated that the cytosol is the compartment where the bulk of Cys synthesis takes place and that the cytosolic OASTL enzyme OAS-A1 is the responsible enzyme. Another member of the OASTL family is DES1, a novel L-cysteine desulfhydrase that catalyzes the desulfuration of Cys to produce sulfide, thus acting in a manner opposite to that of OAS-A1. Detailed studies of the oas-a1 and des1 null mutants have revealed the involvement of the DES1 and OAS-A1 proteins in coordinate regulation of Cys homeostasis and the generation of sulfide in the cytosol for signaling purposes. Thus, the levels of Cys in the cytosol strongly affect plant responses to both abiotic and biotic stress conditions, while sulfide specifically generated from the degradation of Cys negatively regulates autophagy induced in different situations. In conclusion, modulation of the levels of Cys and sulfide is likely critical for plant performance

Detection of Pathogens Using Microfluidics and Biosensors

Point-of-care devices technology are a promising way towards the recognition of pathogens in early-stage diagnosis, which is critical for the success of inexpensive treatments as opposed to the high costs of managing the disease. The integration of immunoassays with read out circuitry allows the implementation of diagnostic devices for their use by untrained personnel, without compromising reliability. In the following chapter, three different biosensors based on lab-on-a-chip (LoC) and microfluidic technologies were designed, assembled and tested for pathogen diagnosis. The devices allowed the effective detection of the human papilloma virus, Mycobacterium tuberculosis and Chagas parasite in shorter times and with smaller sample volumes than those required by current clinical diagnosis techniques. All devices were benchmarked against commercial techniques in terms of cost and time requirement per test

Effects of gamma-Ray radiation on magnetic properties of NdFeB and SmCo permanent magnets for space applications

Several samples of NdFeB and SmCo permanent magnets have been irradiated with gamma rays up to different total irradiation doses until 1Mrad(Si). Magnetic properties of the samples have been measured at different temperatures before and after irradiation. The modifications of the magnetic parameters are presented. From these results it is highlighted which permanent magnets show more resistance to radiation and are more suitable to be included in devices for space applications or high radiation environments