Relaciones entre el autoconcepto y el perfil psicológico deportivo en triatletas

El propósito de este trabajo fue examinar las relaciones entreel autoconcepto multidimensional y el perfil psicológico en un grupo detriatletas. Participaron en el estudio 88 triatletas con edades entre 20 y 55años (M= 36.06; DT= 7.75). Se utilizó el Cuestionario Autoconcepto Forma5 (AF5) para evaluar el autoconcepto y el Inventario Psicológico deEjecución Deportiva (IPED) para analizar el perfil psicológico. Los análisisde correlación efectuados pusieron de manifiesto relaciones significativasentre los constructos estudiados, siendo el autoconcepto emocional el quetuvo una mayor correlación con los diferentes factores del perfil psicológico.Además, la autoconfianza, el control de afrontamiento negativo y el controlactitudinal fueron las dimensiones del IPED que obtuvieron un mejor valorde predicción a partir de los diferentes factores del autoconcepto. Losresultados hallados pusieron de manifiesto la importancia del autoconceptoen la configuración de las diversas habilidades psicológicas implicadas en elrendimiento del deportista

Counting BPS states on the Enriques Calabi-Yau

We study topological string amplitudes for the FHSV model using various techniques. This model has a type II realization involving a Calabi-Yau threefold with Enriques fibres, which we call the Enriques Calabi-Yau. By applying heterotic/type IIA duality, we compute the topological amplitudes in the fibre to all genera. It turns out that there are two different ways to do the computation that lead to topological couplings with different BPS content. One of them leads to the standard D0-D2 counting amplitudes, and from the other one we obtain information about bound states of D0-D4-D2 branes on the Enriques fibre. We also study the model using mirror symmetry and the holomorphic anomaly equations. We verify in this way the heterotic results for the D0-D2 generating functional for low genera and find closed expressions for the topological amplitudes on the total space in terms of modular forms, and up to genus four. This model turns out to be much simpler than the generic B-model and might be exactly solvable.Comment: 62 pages, v3: some results at genus 3 corrected, more typos correcte

Exposure of a Dengue Vector to Tea and Its Waste: Survival, Developmental Consequences, and Significance for Pest Management

Dengue mosquitoes are evolving into a broader global public health menace, with relentless outbreaks and the rise in number of Zika virus disease cases as reminders of the continued hazard associated with Aedes vectors. The use of chemical insecticidesthe principal strategy against mosquito vectorshas been greatly impeded due to the development of insecticide resistance and the shrinking spectrum of effective agents. Therefore, there is a pressing need for new chemistries for vector control. Tea contains hundreds of chemicals, and its waste, which has become a growing global environmental problem, is almost as rich in toxicants as green leaves. This paper presents the toxic and sublethal effects of different crude extracts of tea on Aedes albopictus. The survival rates of larvae exposed to tea extracts, especially fresh tea extract (FTE), were markedly lower than those in the control treatment group. In addition to this immediate toxicity against different developmental stages, the extracts tested caused a broad range of sublethal effects. The developmental time was clearly longer in containers with tea, especially in those with young larvae (YL) and FTE. Among the survivors, pupation success was reduced in containers with tea, which also produced low adult emergence rates with increasing tea concentration. The production of eggs tended to be reduced in females derived from the tea treatment groups. These indirect effects of tea extracts on Ae. albopictus exhibited different patterns according to the exposed larval stage. Taken together, these findings indicate that tea and its waste affect most key components of Ae. albopictus vectorial capacity and may be useful for dengue control. Reusing tea waste in vector control could also be a practical solution to the problems associated with its pollution

Differential Protein Contents in Two Members of the White fly Bemisia tabaci(Hemiptera:Aleurodidae)Complex:Reproductive and Invasive Implications

Abstract: Although the displacement of some native whitefly species by he B biotype of Bemisia tabaci ha been noted in China, it is still unclear physiological and molecular mechanisms predominate during such invasions. Here, we investigated proteome varialibility in both B biotype and the native ZHJI haplotype.ZHJI eggs showed larger numbers of specific proteins than B eggs. A set of proteins found in B eggs were present at higher levels in ZHJI.Three ZHJI egg proteins were present at higher levels in B eggs. ZHJI males possessed four specific proteins, and at least five other male proteins were shared by two whiteflies.Two proteins identified in ZHJI males were present at higher levels in B males. Three other shared male proteins weere found at much higher levels in ZHJI than in the B biotype. Both ZHJI and B expressed three specific female proteins. Most of the female proteins identified in ZHJI were present at much higher levels in B. In conclusion, protein content indexed by electrophoretic profiling has likely played an important role during the displacement of natives by the B biotype

Differential Protein Contents in Two Members of the Whitefly Bemisia tabaci (Hemiptera: Aleurodidae) Complex: Reproductive and Invasive Implications

Although the displacement of some native whitefly species by the B biotype of Bemisia tabaci has been noted in China, it is still unclear which physiological and molecular mechanisms predominate during such invasions. Here, we investigated proteome variability in both B biotype and the native ZHJ1 haplotype. ZHJ1 eggs showed larger numbers of specific proteins than B eggs. A set of proteins found in B eggs were present at higher levels in ZHJ1. Three ZHJ1 egg proteins were present at higher levels in B eggs. ZHJ1 males possessed four specific proteins, and at least five other male proteins were shared by the two whiteflies. Two proteins identified in ZHJ1 males were present at higher levels in B males. Three other shared male proteins were found at much higher levels in ZHJ1 than in the B biotype. Both ZHJ1 and B expressed three specific female proteins. Most of the female proteins identified in ZHJ1 were present at much higher levels in B. In conclusion, protein content indexed by electrophoretic profiling has likely played an important role during the displacement of natives by the B biotype

Incydenty sercowo-naczyniowe u pacjentów stosujących sildenafil - wyniki badania International Men’s Health Study

Wstęp: Celem pracy było oszacowanie częstości występowania poważnych incydentów sercowo-naczyniowych (np. zawał serca, udar) oraz całkowitej śmiertelności wśród mężczyzn z zaburzeniami erekcji otrzymujących sildenafil. Metody: Prospektywnym, obserwacyjnym badaniem kohortowym International Men’s Health Study (IMHS) objęto pacjentów ze zdiagnozowanymi zaburzeniami erekcji oraz wcześniej stosujących sildenafil lub dopiero zaczynających przyjmować ten preparat. Dane wyjściowe oraz z obserwacji odległej dotyczące chorób sercowo-naczyniowych (CVD), czynników ryzyka oraz zaburzeń erekcji uzyskano za pomocą odpowiednich kwestionariuszy. Do osób, które przebyły epizod sercowo-naczyniowy, wysłano kwestionariusze w celu zebrania informacji związanych z ekspozycją na sildenafil/leczeniem zaburzeń erekcji przed incydentem. Wyniki: W analizowanej grupie (n = 3813) odnotowano 35 incydentów sercowo-naczyniowych u 30 chorych. Częstość zgonu z jakiejkolwiek przyczyny, zawału serca oraz udaru wynosiła odpowiednio 0,4; 0,6 i 0,1 na każdych 100 pacjentolat obserwacji. W grupie 6 mężczyzn, którzy zgłosili stosowanie sildenafilu na miesiąc przed incydentem sercowo-naczyniowym, 2 podało jego użycie w czasie 24 godzin poprzedzających zdarzenie. Wnioski: Wyniki badania IMHS potwierdzają wcześniejsze doniesienia o współwystępowaniu zaburzeń erekcji oraz CVD i o podobnych czynnikach ryzyka tych chorób

Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min energy threshold, \nobreak{$6\times 10^{19}$eV}. The anisotropy was measured by the fraction of arrival directions that are less than $3.1^\circ$ from the position of an active galactic nucleus within 75 Mpc (using the V\'eron-Cetty and V\'eron $12^{\rm th}$ catalog). An updated measurement of this fraction is reported here using the arrival directions of cosmic rays recorded above the same energy threshold through 31 December 2009. The number of arrival directions has increased from 27 to 69, allowing a more precise measurement. The correlating fraction is $(38^{+7}_{-6})$, compared with $21$ expected for isotropic cosmic rays. This is down from the early estimate of $(69^{+11}_{-13})$. The enlarged set of arrival directions is examined also in relation to other populations of nearby extragalactic objects: galaxies in the 2 Microns All Sky Survey and active galactic nuclei detected in hard X-rays by the Swift Burst Alert Telescope. A celestial region around the position of the radiogalaxy Cen A has the largest excess of arrival directions relative to isotropic expectations. The 2-point autocorrelation function is shown for the enlarged set of arrival directions and compared to the isotropic expectation.Comment: Accepted for publication in Astroparticle Physics on 31 August 201

Atmospheric effects on extensive air showers observed with the Surface Detector of the Pierre Auger Observatory

Atmospheric parameters, such as pressure (P), temperature (T) and density, affect the development of extensive air showers initiated by energetic cosmic rays. We have studied the impact of atmospheric variations on extensive air showers by means of the surface detector of the Pierre Auger Observatory. The rate of events shows a ~10% seasonal modulation and ~2% diurnal one. We find that the observed behaviour is explained by a model including the effects associated with the variations of pressure and density. The former affects the longitudinal development of air showers while the latter influences the Moliere radius and hence the lateral distribution of the shower particles. The model is validated with full simulations of extensive air showers using atmospheric profiles measured at the site of the Pierre Auger Observatory.Comment: 24 pages, 9 figures, accepted for publication in Astroparticle Physic

The exposure of the hybrid detector of the Pierre Auger Observatory

The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The "hybrid" detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is crucial for an accurate evaluation of the exposure. We discuss the relevance of monitoring data collected during operations, such as the status of the fluorescence detector, background light and atmospheric conditions, that are used in both simulation and reconstruction.Comment: Paper accepted by Astroparticle Physic

The Fluorescence Detector of the Pierre Auger Observatory

The Pierre Auger Observatory is a hybrid detector for ultra-high energy cosmic rays. It combines a surface array to measure secondary particles at ground level together with a fluorescence detector to measure the development of air showers in the atmosphere above the array. The fluorescence detector comprises 24 large telescopes specialized for measuring the nitrogen fluorescence caused by charged particles of cosmic ray air showers. In this paper we describe the components of the fluorescence detector including its optical system, the design of the camera, the electronics, and the systems for relative and absolute calibration. We also discuss the operation and the monitoring of the detector. Finally, we evaluate the detector performance and precision of shower reconstructions.Comment: 53 pages. Submitted to Nuclear Instruments and Methods in Physics Research Section