IMPORTANCIA DE LA NUTRICIÓN EN EL PLAN DE ESTUDIOS DE ENFERMERÍA DE LA FESI UNAM

Introduction: In Mexico there are some regions with starvation and undernourishment, therefore the medical research has to be increased. The Nursing Major program at Facultad de Estudios Superiores Iztacala of Universidad Nacional Autónoma de México (2006) includes the study of nutrition. This one is divided in different modules but not as an specific subject, however we have observed that students are not able to incorporate all the nutrition fundamental aspects. Currently the basic theory of nutrition takes 56 hours and 50 minutes, but this one is included such as a section in different courses. “Nutrition and Health care” is an elective subject and it takes 80 hours, nevertheless there are two disadvantages. The first one is that students are allowed to take it up to the fourth semester, and the second one is that there is a lack of time (23 hours), since nutrition is a wide topic. We need to get qualified people related to this topic in order to teach efficiently. We have noticed that students need to learn more about nutrition, for that reason it is necessary to assign the nutrition topic as a compulsory subject, otherwise not all the students will be able to take the course. Material and Method: Qualitative and quantitative methods were used for the current research. For the quantitative method was used a nominal scale that allowed to sort the 34 programs reviewed from mexican institutions which have the nursing major. Two researches (done by the students) were considerated to find out that only 70% of students enrolled in seventh semester had taken the nutrition subject. Regarding the qualitative method, 10 students proposed that nutrition must be included as a compulsory subject. Results: There was a study focused on the nursing major programs from mexican universities, in which 34 was the number of programs reviewed. 28 universities have already included nutrition topic in their programs and 6 universities have not considered this matter in their programs yet. According to the results from the qualitative research, nutrition must be considered as an essential subject on the programs. Discussion: As a result of a quantitative and qualitative research, it is important to take into account, in the next evaluation of the subject’s curriculum, the opportunity to reincorporate the nutrition topic in basic semesters, and emphasize this point on all the study programs. Conclusion: In an effort to improve the topics related to nutrition and health care, it is very important to reorganize and focus on study plans at Iztacala University.Introducción: México tiene algunas regiones con hambre y desnutrición. También la producción en investigación clínica en México se debe incrementar. El Plan de Estudios de la Licenciatura en Enfermería de la Facultad de Estudios Superiores Iztacala de la Universidad Nacional Autónoma de México (2006) sí contempla el estudio de la Nutrición pero de manera fraccionada en diferentes módulos. Hemos observado que las y los estudiantes no han integrado todos los aspectos fundamentales de Nutrición. El tiempo empleado para abordar la temática teórica básica sobre Nutrición es de 56 horas con 50 minutos. Como optativa de “Nutrición y Salud” se imparten 80 horas. El primer inconveniente es que la optativa la pueden llevar hasta el 4° semestre; el segundo, es que hay un déficit de 23 horas de trabajo en el aula, si restamos las horas asignadas al módulo optativo con respecto a las horas de trabajo en los módulos obligatorios. Si México tiene problemas de nutrición, necesitamos contar con personal preparado en el tema. Vemos que no estamos aportándoles suficientemente estas herramientas, por lo que es necesario que no se estudie en forma de materia optativa, porque no todos los estudiantes la van a cursar. Material y Método: Es una investigación evaluativa cuanti-cualitativa. La parte cuantitativa empleó el nivel de escala nominal que permitió clasificar los 34 programas revisados de Instituciones de Educación Superior que imparten la Licenciatura en Enfermería en México. Se tomaron en cuenta los resultados de 2 investigaciones realizadas por estudiantes que encontraron que sólo el 70% de la matrícula de séptimo semestre han llevado Nutrición. En la parte cualitativa, 10 estudiantes sugirieron que Nutrición fuera un módulo obligatorio. Resultados: 28 Programas de los 34 revisados de Universidades de México SÍ tienen especificado en su Plan de Estudios el abordaje de Nutrición. Mientras que 6 Programas de los 34 revisados NO tienen especificado en su Plan de Estudios el abordaje de Nutrición. Los resultados cualitativos fueron constantes en cuanto a que “la optativa de Nutrición debería pasar a módulo obligatorio”. Discusión: Hay un peso cuantitativo y cualitativo que se pronuncia hacia revisar en una próxima Evaluación Curricular, la pertinencia de reincorporar en los primeros semestres obligatorios la temática de Nutrición de un manera más explícita en nuestro Plan de Estudios. Conclusión: Hay que reorganizar los contenidos programáticos en materia de Nutrición y Salud dentro de nuestro Plan de Estudios

What traits are carried on mobile genetic elements, and why?

Although similar to any other organism, prokaryotes can transfer genes vertically from mother cell to daughter cell, they can also exchange certain genes horizontally. Genes can move within and between genomes at fast rates because of mobile genetic elements (MGEs). Although mobile elements are fundamentally self-interested entities, and thus replicate for their own gain, they frequently carry genes beneficial for their hosts and/or the neighbours of their hosts. Many genes that are carried by mobile elements code for traits that are expressed outside of the cell. Such traits are involved in bacterial sociality, such as the production of public goods, which benefit a cell's neighbours, or the production of bacteriocins, which harm a cell's neighbours. In this study we review the patterns that are emerging in the types of genes carried by mobile elements, and discuss the evolutionary and ecological conditions under which mobile elements evolve to carry their peculiar mix of parasitic, beneficial and cooperative genes

Superparamagnetic colloids in viscous fluids

The influence of a magnetic field on the aggregation process of superparamagnetic colloids has been well known on short time for a few decades. However, the influence of important parameters, such as viscosity of the liquid, has received only little attention. Moreover, the equilibrium state reached after a long time is still challenging on some aspects. Indeed, recent experimental measurements show deviations from pure analytical models in extreme conditions. Furthermore, current simulations would require several years of computing time to reach equilibrium state under those conditions. In the present paper, we show how viscosity influences the characteristic time of the aggregation process, with experimental measurements in agreement with previous theories on transient behaviour. Afterwards, we performed numerical simulations on equivalent systems with lower viscosities. Below a critical value of viscosity, a transition to a new aggregation regime is observed and analysed. We noticed this result can be used to reduce the numerical simulation time from several orders of magnitude, without modifying the intrinsic physical behaviour of the particles. However, it also implies that, for high magnetic fields, granular gases could have a very different behaviour from colloidal liquids

Measurement of the Bottom-Strange Meson Mixing Phase in the Full CDF Data Set

We report a measurement of the bottom-strange meson mixing phase \beta_s using the time evolution of B0_s -> J/\psi (->\mu+\mu-) \phi (-> K+ K-) decays in which the quark-flavor content of the bottom-strange meson is identified at production. This measurement uses the full data set of proton-antiproton collisions at sqrt(s)= 1.96 TeV collected by the Collider Detector experiment at the Fermilab Tevatron, corresponding to 9.6 fb-1 of integrated luminosity. We report confidence regions in the two-dimensional space of \beta_s and the B0_s decay-width difference \Delta\Gamma_s, and measure \beta_s in [-\pi/2, -1.51] U [-0.06, 0.30] U [1.26, \pi/2] at the 68% confidence level, in agreement with the standard model expectation. Assuming the standard model value of \beta_s, we also determine \Delta\Gamma_s = 0.068 +- 0.026 (stat) +- 0.009 (syst) ps-1 and the mean B0_s lifetime, \tau_s = 1.528 +- 0.019 (stat) +- 0.009 (syst) ps, which are consistent and competitive with determinations by other experiments.Comment: 8 pages, 2 figures, Phys. Rev. Lett 109, 171802 (2012

A New Crocodylian from the Late Maastrichtian of Spain: Implications for the Initial Radiation of Crocodyloids

The earliest crocodylians are known primarily from the Late Cretaceous of North America and Europe. The representatives of Gavialoidea and Alligatoroidea are known in the Late Cretaceous of both continents, yet the biogeographic origins of Crocodyloidea are poorly understood. Up to now, only one representative of this clade has been known from the Late Cretaceous, the basal crocodyloid Prodiplocynodon from the Maastrichtian of North America.The fossil studied is a skull collected from sandstones in the lower part of the Tremp Formation, in Chron C30n, dated at -67.6 to 65.5 Ma (late Maastrichtian), in Arén (Huesca, Spain). It is located in a continuous section that contains the K/P boundary, in which the dinosaur faunas closest to the K/P boundary in Europe have been described, including Arenysaurus ardevoli and Blasisaurus canudoi. Phylogenetic analysis places the new taxon, Arenysuchus gascabadiolorum, at the base of Crocodyloidea.The new taxon is the oldest crocodyloid representative in Eurasia. Crocodyloidea had previously only been known from the Palaeogene onwards in this part of Laurasia. Phylogenetically, Arenysuchus gascabadiolorum is situated at the base of the first radiation of crocodyloids that occurred in the late Maastrichtian, shedding light on this part of the cladogram. The presence of basal crocodyloids at the end of the Cretaceous both in North America and Europe provides new evidence of the faunal exchange via the Thulean Land Bridge during the Maastrichtian

Very low frequency Syndromes

Dismorfología, Citogenética y Clínica: Resultados de estudios sobre los datos del ECEMCThe aim of this chapter is to summarize updated knowledge about the clinical characteristics, etiology, genetic and molecular aspects, as well as mechanisms involved in syndromes having very low frequency, in order to promote their better recognition. During the last five years, a total of 30 syndromes have been published in this chapter of the Boletín del ECEMC. This issue includes the following selected syndromes: Crouzon, Pfeiffer, Apert, Saethre-Chotzen, Carpenter and Muenke. All share craniosynostosis as the main clinical feature but also present with other birth defects, the most important being limb malformations, specially syndactyly and polydactyly. Over 100 syndromes with craniosynostosis have been described, usually involving multiple sutures, and several of them are associated with limb malformations. The clinical overlapping between those syndromes makes difficult to perform a neonatal diagnosis, based on their clinical findings. However, molecular genetic testing, specifically of the FRGR1-3 and TWIST1 genes, could help to establish the diagnosis of some of them. Early diagnosis is important for establishing the most suitable treatment for each patient, as well as to offer an accurate genetic counselling and the possibility of preimplantational and/or prenatal diagnosis.N

Study of top quark production and decays involving a tau lepton at CDF and limits on a charged Higgs boson contribution

We present an analysis of top-antitop quark production and decay into a tau lepton, tau neutrino, and bottom quark using data from 9??fb-1 of integrated luminosity at the Collider Detector at Fermilab. Dilepton events, where one lepton is an energetic electron or muon and the other a hadronically decaying tau lepton, originating from proton-antiproton collisions at vs=1.96??TeV, are used. A top-antitop quark production cross section of 8.1±2.1??pb is measured, assuming standard-model top quark decays. By separately identifying for the first time the single-tau and the ditau components, we measure the branching fraction of the top quark into the tau lepton, tau neutrino, and bottom quark to be (9.6±2.8)%. The branching fraction of top quark decays into a charged Higgs boson and a bottom quark, which would imply violation of lepton universality, is limited to be less than 5.9% at a 95% confidence level [for B(H-?t¯?)=1]

Measurement of the Pseudorapidity and Centrality Dependence of the Transverse Energy Density in Pb-Pb Collisions at √sNN=2.76 TeV

The transverse energy (E-T) in Pb-Pb collisions at 2.76 TeV nucleon-nucleon center-of-mass energy (root s(NN)) has been measured over a broad range of pseudorapidity (eta) and collision centrality by using the CMS detector at the LHC. The transverse energy density per unit pseudorapidity (dE(T)/d eta) increases faster with collision energy than the charged particle multiplicity. This implies that the mean energy per particle is increasing with collision energy. At all pseudorapidities, the transverse energy per participating nucleon increases with the centrality of the collision. The ratio of transverse energy per unit pseudorapidity in peripheral to central collisions varies significantly as the pseudorapidity increases from eta = 0 to vertical bar eta vertical bar = 5.0. For the 5% most central collisions, the energy density per unit volume is estimated to be about 14 GeV/fm(3) at a time of 1 fm/c after the collision. This is about 100 times larger than normal nuclear matter density and a factor of 2.6 times higher than the energy density reported at root s(NN) = 200 GeV at the Relativistic Heavy Ion Collider

Measurement of the differential cross section for isolated prompt photon production in pp collisions at 7 TeV

A measurement of the differential cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a center-of-mass energy of 7 TeV is presented. The data sample corresponds to an integrated luminosity of 36 pb(-1) recorded by the CMS detector at the LHC. The measurement covers the pseudorapidity range vertical bar eta vertical bar < 2.5 and the transverse energy range 25 < E-T < 400 GeV, corresponding to the kinematic region 0.007 < x(T) < 0.114. Photon candidates are identified with two complementary methods, one based on photon conversions in the silicon tracker and the other on isolated energy deposits in the electromagnetic calorimeter. The measured cross section is presented as a function of E-T in four pseudorapidity regions. The next-to-leading-order perturbative QCD calculations are consistent with the measured cross section