Search results for "Planeta"
showing 10 items of 5577 documents
Pulsating B and Be stars in the Small Magellanic Cloud
2008
Context: Stellar pulsations in main-sequence B-type stars are driven by the kappa-mechanism due to the Fe-group opacity bump. The current models do not predict the presence of instability strips in the B spectral domain at very low metallicities. As the metallicity of the SMC is lower than Z=0.005, it constitutes a very suitable object to test these predictions. Aims: The main objective is to investigate the existence of B-type pulsators at low metallicities, searching for short-term periodic variability in absorption-line B and Be stars in the SMC. The analysis has been performed in a sample of 313 B and Be stars with fundamental astrophysical parameters accurately determined from high-res…
Stationary sets and asymptotic behavior of the mean curvature flow with forcing in the plane
2020
We consider the flat flow solutions of the mean curvature equation with a forcing term in the plane. We prove that for every constant forcing term the stationary sets are given by a finite union of disks with equal radii and disjoint closures. On the other hand for every bounded forcing term tangent disks are never stationary. Finally in the case of an asymptotically constant forcing term we show that the only possible long time limit sets are given by disjoint unions of disks with equal radii and possibly tangent. peerReviewed
Natural Halogen Emissions to the Atmosphere: Sources, Flux, and Environmental Impact
2022
Understanding the atmospheric geochemical cycle of both natural and anthropogenic halogens is important because of the detrimental effect halogens have on the environment, notably on tropospheric and stratospheric ozone. Oceans are the primary natural source for atmospheric Cl, F, Br, and I, but anthropogenic emissions are still important, especially for Cl. While emissions of human-made halocarbons (e.g., chlorofluorocarbons or CFCs) are expected to continue to decrease allowing progressive stratospheric ozone recovery, volcanic activity (e.g., clusters of mid-scale explosive eruptions or large-scale explosive eruptions) might disturb this recovery over the next decades. This review provid…
Reliability of Frail and Barthel Tests for Detecting Frailty in Palliative Oncological Patients in a Home Hospitalization Unit: A Comparative Study.
2022
Cancer is a condition that can increase the risk of frailty. In addition, palliative oncological patients in home hospitalization can find their activities of daily living affected. The main objective was to measure the degree of frailty in the oncological population in home hospitalization comparing Barthel and Frail-VIG Indexes. This is a descriptive cross-sectional study. A sample of oncological patients in home hospitalization (n = 50) that included 27 men and 23 women were recruited, and disability due to frailty was measured using the VIG frailty index and the Barthel scale for Activities of Daily Living (ADLs). Spearman’s correlation coefficients were categorized as weak (rs &l…
The Palliative Care in the Metastatic Spinal Tumors. A Systematic Review on the Radiotherapy and Surgical Perspective
2022
Spine represents the most common site for metastatic disease involvement. Due to the close relationship between the spinal cord and critical structures, therapeutic management of spinal metastases remains challenging. Spinal localization can lead to neurological sequelae, which can significantly affect the quality of life in patients with a limited life expectancy. The authors conducted a systematic literature review according to PRISMA guidelines in order to determine the impact of the most updated palliative care on spinal metastases. The initial literature search retrieved 2526 articles, manually screened based on detailed exclusion criteria. Finally, 65 studies met the inclusion criteri…
Gravity-derived Moho map for Latvia
2020
A precise understanding of crustal structure is essential to the fields of geodynamics, seismology and certain branches of geophysics. A boundary between the crust and the mantle is known as the MohoroviÄiÄ discontinuity, simply referred to as the âMohoâ. Moho geometry and depth have been extensively studied in Europe, but there are still regions with little information about it. One such area is the northern Baltics, Latvia in particular. So far, only one seismic refraction profile, spanning from Sovetsk (Kaliningrad) to Kohtla-Järve (Estonia), has been used to study the deep structure of the Earth in Latvia. We propose gravity inversion (ParkerâOldenburg algorithm) to gain more insight i…
STATBOX Concept for Simulation of Urban Phenomena
2013
Abstract An urban environment is a dynamic system which is constantly changing in terms of space and time. There are two dimensions in any urban environment – the physical dimension and the functional dimension. All of the structures of an urban environment interact and people are the intermediaries in this process. The spatial structure of cities has been studied from various perspectives by architects, urban planners, environmental scientists, economists, geographers etc. Constant monitoring that is based on remote sensing, spatial statistics, simulation etc., is needed to make on going note of transformation in the various types of land use that exist, movement of people and business env…
Du « socialisme de cœur » zolien, ou comment être considéré en même temps comme « socialiste » et « ennemi du peuple »
2020
When Germinal was published in 1885, the critic classified Zola as a “socialist” writer. The author himself used this adjective many times referring to his work. At the same time, he didn’t know Marxism and was a resolute opponent to revolution, equality and the government by the people. The paper aims to explain some aspects of Zola’s “socialism” taking into account his origins, his youth experiences and the evolution of his works. This might help to understand the particular meaning done to the term by the writer. Suite à la publication de Germinal en 1885, la critique a classé Zola comme un écrivain « socialiste ». Le romancier lui-même a utilisé ce qualificatif plusieurs fois en parlant…
Els recursos emotius i persuasius, en el discurs oral de dues conferències ted
2016
espanolLa diversidad y la inmediatez de la informacion disponible en el mundo actual intensifican la necesidad de dominar las estrategias persuasivas emocionales, como tambien los recursos linguisticos necesarios para que estas tengan exito, por parte de quienes desean causar algun efecto en la poblacion. Los estudios interesados en susodichas estrategias se han centrado, mayoritariamente, en discursos comerciales o politicos y han desatendido de manera considerable aquellos dedicados a la difusion de ideas. Preocupados por esta carencia, en el presente trabajo nos preguntamos: Como se construye la persuasion, mediante la emocion, en los discursos orales que tienen como finalidad difundir i…
A planetary well-being accounting system for organizations
2024
Transformative changes in the operations of humankind are needed to support the transition towards planetary well-being. We humans organize our everyday lives through organizations. We argue that to understand the role of organizations and to facilitate the transition towards planetary well-being, we need a value-transforming integration of financial and environmental accounting and reporting. We find such integration critical to ensuring that the senior executives of organizations pay attention, and to ensuring that environmental impacts begin to influence the management decisions of the organizations. In this chapter we discuss how and why environmental accounting can and should be integr…