766 research outputs found
X-Shooter observations of low-mass stars in the Eta Chamaeleontis association
The nearby Eta Chamaeleontis association is a collection of 4-10 Myr old
stars with a disk fraction of 35-45%. In this study, the broad wavelength
coverage of VLT/X-Shooter is used to measure the stellar and mass accretion
properties of 15 low mass stars in the Eta Chamaeleontis association. For each
star, the observed spectrum is fitted with a non-accreting stellar template and
an accretion spectrum obtained from assuming a plane-parallel hydrogen slab.
Five of the eight stars with an IR disk excess show excess UV emission,
indicating ongoing accretion. The accretion rates measured here are similar to
those obtained from previous measurements of excess UV emission, but tend to be
higher than past measurements from H-alpha modeling. The mass accretion rates
are consistent with those of other young star forming regions.Comment: Accepted for publication in Astronomy & Astrophysic
Spiel, Sprache und die intrinsische Natur von Welt und Wirkung
Eine Wissenschaft ist ein funktionales System gegenseitig abhängiger Größen, das intrinsischer Träger bedarf. Für basale Größen bedarf es absolut intrinsischer Träger. Das lässt sich etwa am Schachspiel erläutern. Eine hierarchisch aufgebaute Welt mit kausal interagierenden Dingen, wie sie Gregg Rosenberg konzipiert, braucht ein komplexes Trägergeflecht. Es entspricht dem Aufbau einer Sprache. Im Vergleich mit einem hylemorphistischen Weltbild wird eine Trägerontologie genauer entfaltet
The effect of auditory stimuli on visual time-to-contact perception
Previous research has demonstrated that auditory and visual stimuli have individual effects on the accuracy of a person’s estimation of time-to-contact (TTC), the time at which two objects collide. Prior findings also suggest that there is cross-modal interference between vision and audition; however, this phenomenon has never been studied in a TTC situation. (Driver & Spence, 1998; Ichikawa & Masskura, 2006; Roseboom, Kawabe, & Nishida, 2013) In this study we attempted to fill in this research gap by examining the effect of auditory speed cues over visual speed cues in a two-dimensional TTC scenario, and by determining if an object’s temporal presence influences accurate perception of TTC by using occlusion. Our results indicate that in the presence of auditory and visual speed disparity, participants rely more heavily on auditory cues, but when auditory and visual speeds are equivalent, or when there is no audition present, participants rely more on visual cues
Solving the stellar 62Ni problem with AMS
An accurate knowledge of the neutron capture cross sections of 62,63Ni is
crucial since both isotopes take key positions which affect the whole reaction
flow in the weak s process up to A=90. No experimental value for the
63Ni(n,gamma) cross section exists so far, and until recently the experimental
values for 62Ni(n,gamma) at stellar temperatures (kT=30 keV) ranged between 12
and 37 mb. This latter discrepancy could now be solved by two activations with
following AMS using the GAMS setup at the Munich tandem accelerator which are
also in perfect agreement with a recent time-of-flight measurement. The
resulting (preliminary) Maxwellian cross section at kT=30 keV was determined to
be 30keV = 23.4 +/- 4.6 mb. Additionally, we have measured the
64Ni(gamma,n)63Ni cross section close to threshold. Photoactivations at 13.5
MeV, 11.4 MeV and 10.3 MeV were carried out with the ELBE accelerator at
Forschungszentrum Dresden-Rossendorf. A first AMS measurement of the sample
activated at 13.5 MeV revealed a cross section smaller by more than a factor of
2 compared to NON-SMOKER predictions.Comment: Proceedings of the 11th International Conference on Accelerator Mass
Spectrometry in Rome, Sept. 14-19, 2008; to be published in Nucl. Instr.
Meth.
Detection of leaf structures in close-range hyperspectral images using morphological fusion
Close-range hyperspectral images are a promising source of information in plant biology, in particular, for in vivo study of physiological changes. In this study, we investigate how data fusion can improve the detection of leaf elements by combining pixel reflectance and morphological information. The detection of image regions associated to the leaf structures is the first step toward quantitative analysis on the physical effects that genetic manipulation, disease infections, and environmental conditions have in plants. We tested our fusion approach on Musa acuminata (banana) leaf images and compared its discriminant capability to similar techniques used in remote sensing. Experimental results demonstrate the efficiency of our fusion approach, with significant improvements over some conventional methods
Peruvian-oriental culinary business plan proposal
The world is constantly changing and with it, the lifestyles of consumers. As these changes take place, new lifestyles are born causing business models to adapt and innovate. In this new context, there are consumers that highly care about their health, the quality product they consume, future consequences of their diet and have high expectations of their preferable food companies. Wok & Well was born from this new lifestyle and customer mindset, providing a culinary service aimed to keep a healthier life without leaving out customer?s tastes and customs. Wok & Well offers Peruvian-Oriental fusion food in wok and emphasizes on providing more beneficial and high quality options, as well as giving our customers 100% free will on what to eat and how to eat it from a pool of healthy ingredients followed by 4 simple steps
La difícil autonomía de José Luis Cebrián como director del Diario ABC, 1975-1977
La breve dirección de José Luis Cebrián en ABC (febrero 1975-octubre 1977) coincidió con el final del tardofranquismo, los comienzos de la transición y una incipiente crisis en el diario. Tras su controvertida designación, fue relegado a funciones meramente periodísticas mientras el control ideológico-político del diario continuó en las manos de Torcuato Luca de Tena. El supuesto fracaso de Cebrián, hombre más bien apolítico, se debió en buena medida a razones empresariales y políticas externas a él dado que ABC adoptó una orientación confusa y extremadamente conservadora, como se refleja en unas normas entregadas al director que se publican por vez primera.The short period of José Luis Cebrián as editor of ABC (February 1975-October 1977) coincided with the end of Franco’s dictatorship, the beginnings of the transition to democracy, and an incipient crisis in the newspaper. After his controversial appointment, he was entrusted to run the newsroom while the ideological and political control continued in the hands of the former editor Torcuato Luca de Tena. The alleged failure of a rather apolitical man like Cebrián was greatly due to business and political reasons external to him because ABC adopted extremely conservative positions, as an until now unpublished document delivered to the editor proves
Factores asociados a la automedicación ante problemas dentales de pacientes que asisten a consulta odontológica en Establecimientos de Salud La Esperanza
Determinar los factores asociados a la automedicación ante problemas
dentales de pacientes que asisten a consulta odontológica en Establecimientos de
Salud La Esperanza.
Materiales y Métodos: El estudio fue observacional, de corte transversal. Se
evaluaron a 213 adultos de 2 Centros de Salud de La Esperanza - Trujillo en los
meses de abril y mayo 2023, mediante un cuestionario con 12 preguntas,
previamente validado por medio de la prueba estadística Coeficiente V de Aiken
con un valor de 1 y por medio de una prueba piloto se evaluó la confiabilidad
mediante el coeficiente Alpha de Cronbach con un valor de 0.8118896.
Resultados: Se encontró que el 72.8 % de los pacientes que asisten a consulta
odontológica en Establecimientos de Salud La Esperanza se habían
automedicado, a su vez se halló que los factores asociados fueron la edad y el
grado de instrucción. El grupo etario de 18 a 39 años fue el grupo con mayor
porcentaje de automedicación representando el 79.3%, también se halló que los
pacientes con estudios técnicos fue el grupo con mayor porcentaje que se había
automedicado con el 90.9 %. Según el sexo se obtuvo que las mujeres que se
habian automedicado representaron el 74.5% y en el caso de los hombres
representaron el 67.3%.
Conclusiones: Hubo un elevado porcentaje de automedicación en los adultos
que acudieron a consulta odontológica, siendo los factores asociados el grado de
instrucción y la edad.Determine the factors associated with self-medication in the face of
dental problems of patients who attend dental consultations at La Esperanza
Health Establishments.
Materials and Methods: The study was observational, cross-sectional. 213 adults
from 2 Health Centers in La Esperanza - Trujillo were evaluated in the months of
April and May 2023, using a questionnaire with 12 questions, previously validated
using the Aiken V Coefficient statistical test with a value of 1 and by Through a
pilot test, reliability was evaluated with Cronbach's Alpha coefficient with a value of
0.8118896.
Results: It was found that 72.8% of the patients attending dental consultation at
La Esperanza Health Establishments had self-medicated, in turn it was found that
the associated factors were age and level of education. The age group from 18 to
39 years was the group with the highest percentage of self-medication,
representing 79.3%, it was also found that patients with technical studies were the
group with the highest percentage that had self-medicated with 90.9%. According
to sex, it was found that women who had self-medicated represented 74.5% and in
the case of men they represented 67.3%.
Conclusions: There was a high percentage of self-medication in adults who
attended dental consultation, the associated factors being the level of education
and age.Tesi
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