Zavarovana območja narave so kronski dragulj vsega naravovarstvenega dela, ustrezno varovanje pa je možno le s primernim upravljanjem zavarovanih območij. Upravljavskih nalog je v Triglavskem ...narodnem parku glede na pestrost in raznolikost alpskega prostora veliko, urejanje parka za obiskovalce je le ena od pomembnih upravljavskih nalog. V drugem delu prispevka govorimo prav o upravljavskih pristopih in stanju na terenu pri urejanju parka za obiskovalce.
Abstract
Star-forming galaxies populate a main sequence (MS), a well-defined relation between stellar mass (
M
*
) and star formation rate (SFR). Starburst (SB) galaxies lie significantly above the ...relation, whereas quenched galaxies lie below the sequence. In order to study the evolution of galaxies on the SFR–
M
*
plane and its connection to the gas content, we use the fact that recent episodes of star formation can be pinpointed by the existence of gamma-ray bursts (GRBs). Here we present sensitive C
i
nondetections of
z
∼ 2 ultraluminous infrared (ULIRG) GRB host galaxies. We find that our GRB hosts have similar molecular masses to those of other ULIRGs. However, unlike other ULIRGs, the GRB hosts are located at the MS or only a factor of a few above it. Hence, our GRB hosts are caught in the transition toward the SB phase. This is further supported by the estimated depletion times, which are similar to those of other transitioning galaxies. The GRB hosts are C
i
-dark galaxies, defined as having a C
i
/CO temperature brightness ratio of <0.1. Such a low C
i
/CO ratio has been found in high-density environments (
n
H
> 10
4
cm
−3
) where CO is shielded from photodissociation, leading to underabundances of C
i
. This is consistent with the merger process that is indeed suggested for our GRB hosts by their morphologies.
ABSTRACT
The exploration of the spatial distribution of chemical abundances in star-forming regions of galactic discs can help us to understand the complex interplay of physical processes that ...regulate the star formation activity and the chemical enrichment across a galaxy. We study the azimuthal variations of the normalized oxygen abundance profiles in the highest numerical resolution run of the Evolution and Assembly of GaLaxies and their Environments (EAGLE) Project at $z$ = 0. We use young stellar populations to trace the abundances of star-forming regions. Oxygen profiles are estimated along different line of sights from a centrally located observer. The mean azimuthal variation in the EAGLE discs are ∼0.12 ± 0.03 dex $R_{\rm eff}^{-1}$ for slopes and ∼0.12 ± 0.03 dex for the zero-points, in agreement with previous works. Metallicity gradients measured along random directions correlate with those determined by averaging over the whole discs, although with a large dispersion. We find a slight trend for higher azimuthal variations in the disc components of low star-forming and bulge-dominated galaxies. We also investigate the metallicity profiles of stellar populations with higher and lower levels of enrichment than the average metallicity profiles, and we find that high star-forming regions with high metallicity tend to have slightly shallower metallicity slopes compared with the overall metallicity gradient. The simulated azimuthal variations in the EAGLE discs are in agreement with observations, although the large variety of metallicity gradients would encourage further exploration of the metal mixing in numerical simulations.
ABSTRACT
Be stars are found to rotate close to their critical rotation and therefore they are considered an important laboratory for the study of stellar rotation. In this context, we obtain the ...projected rotational velocity of a sample of classical Be southern stars in the BeSOS database via Fourier transforms in an automated way for several absorption lines at different epochs. A Gaussian profile is fitted to eight observed photospheric He i lines in order to select automatically from the profile the spectral signal given by areas under the curve of 95.45, 98.75, and 99.83 per cent, to obtain vsin i via the Fourier transform technique. The values obtained are in global agreement with the literature. Analysing only one line is not enough to set the vsin i value: depending on the line, the value in most cases is underestimated with respect to λ4471. When gravity-darkening effects are included, apparent values increase by ∼10 per cent. The resolution of the instrument Pontificia Universidad Catolica High Echelle Resolution Optical Spectrograph (PUCHEROS) used for BeSOS spectra ($R \sim 17\, 000$) constrains the theoretical lower bound possible to vsin i ∼ 100 km s−1. The procedure has limitations, using a linear limb-darkening function with ε = 0.6 for classical Be stars rotating close to the break-up velocity without gravity-darkening corrections, which cannot be negligible. Previous works measure vsin i values using just one spectral line and here we demonstrate that with more lines the results can vary. This could be due to the photospheric distribution of atomic transitions in classical Be stars.
Zavarovana območja narave so kronski dragulj vsega naravovarstvenega dela, ustrezno varovanje pa je možno le s primernim upravljanjem zavarovanih območij. Upravljavskih nalog je v Triglavskem ...narodnem parku glede na pestrost in raznolikost alpskega prostora veliko, urejanje parka za obiskovalce je le ena od pomembnih upravljavskih nalog. V drugem delu prispevka govorimo prav o upravljavskih pristopih in stanju na terenu pri urejanju parka za obiskovalce.
La rehabilitación oral de pacientes comprometidos periodontalmente nos plantea un desafío clínico ya que conlleva muchos pasos sensibles y sobre todo el compromiso del paciente para cumplir un plan ...de mantenimiento adecuado. Por lo tanto, para alcanzar los resultados esperados es necesario e imprescindible un tratamiento multidisciplinario que involucre especialidades que trabajen bajo un plan de tratamiento coordinado. Con la introducción de los implantes dentales se ha proporcionado beneficios a los pacientes llevando a mejorar la calidad de vida del paciente así como su grado de satisfacción. En el presente artículo se relata el caso clínico de un paciente periodontalmente comprometido, su tratamiento y seguimiento por seis años hasta alcanzar el éxito del mismo con una rehabilitación implanto soportada tipo prótesis híbrida en el maxilar superior y coronas cementadas sobre implantes en el maxilar inferior siguiendo un protocolo que nos brinda predictibilidad y una alta satisfacción del paciente.
The oral rehabilitation of periodontally compromised patients present a clinical challenges because takes many sensible steps, especially the patient's commitment to perform a maintenance plan. Therefore, in order to achieve the expected results, a multidisciplinary treatment involving specialties that work under a coordinated treatment plan is essential. The introduction of dental implants has provided benefits to leading to improving the quality of life and the satisfaction of the patient. In the present article a clinical case of a periodontal compromised patient is related, treatment and follow-up for six years to the success of such treatment an implant supported rehabilitation type hybrid prosthesis in the maxilla and crowns cemented on implants in the lower jaw is reported following a protocol that provides us with adequate treatment predictability and high patient satisfaction.
Objetivo: El objetivo del presente estudio es determinar la frecuencia y distribución de los diagnósticos de los desórdenes funcionales oclusales en los pacientes atendidos en pregrado y posgrado de ...Rehabilitación Oral de la Clínica Dental Docente de la Universidad Peruana Cayetano Heredia, durante los años 2016 y 2017. Materialy métodos: La investigación es descriptiva, retrospectiva, observacional y transversal. Las variables son los diagnósticos de los desórdenes funcionales oclusales, clasificados por género, edad, nivel de estudio y sede. Seempleó la base de datos de todas las historias clínicas digitalizadas con presentación de caso planificada y aceptada por el docente tutor y acta de compromiso aceptada por el paciente. Resultados: Se encontró que el diagnóstico con mayor porcentaje fue el de oclusión colapsada con 38,69 % (n = 166); en segundo lugar, se diagnosticó la desarmonía oclusal con 36,13 % (n = 155); luego sigue el diagnóstico de colapso posterior de mordida con 10,72% (n = 46); el diagnóstico de edéntulo total superior e inferior alcanzó 7,69 % (n = 33); oclusión traumática, 5,83% (n = 25); y la menor frecuencia la tiene el síndrome de combinación con 0,93 % (n = 4). Conclusiones: Del total de pacientes (n = 429), el género con mayor frecuencia fue el sexo femenino. La edad promedio fue de 56,79 años, encontrándose el mayor porcentaje de pacientes evaluados entre los 60 y 69 años de edad. Los estudiantes de pregrado fueron los que asignaron la mayor cantidad de diagnósticos. La sede de San Martín de Porres fue donde serealizaron la mayor cantidad de diagnósticos de pacientes.
Objective:The objective of the present study was to determine the frequency and distribution of diagnoses of functional occlusal disorders among patients treated in undergraduate and postgraduate oral rehabilitation at the Teaching Dental Clinic of the Peruvian Cayetano Heredia University between 2016 and 2017. Material andmethods:The research was descriptive, retrospective, observational, and cross-sectional. The variables considered were the diagnoses of functional occlusal disorders, classifying them by gender, age, educational level, and location. A database comprising all digitized medical records was used with a case presentation planned and accepted by the tutoring teacher and a certificate of commitment accepted by the patient. Results: It was found that the most common diagnosis was collapsed occlusion (38.69% of diagnoses, n = 166), followed by occlusal disharmony (36.13%, n = 155), posterior bite collapse (10.72%, n = 46), upper and lower total edentulous (7.69%, n = 33),traumatic occlusion (5.83%, n = 25), and the combination syndrome (0.93%, n = 4). Conclusions: Most of the patients analyzed (n = 429) were women. The average age was 56.79 years, with most patients analyzed aged between 60 and 69. Undergraduate students made the highest number of diagnoses. Most diagnoses were made at the San Martín de Porres center.
Abstract Introduction In Brazil, professionals, scientific community, and members of regulatory bodies have not yet achieved a consensus regarding who can legally perform the professional duties of a ...clinical engineer. We aim at clarifying this aspect, based on a detailed analysis of the pertinent regulations. Methods We acted on three fronts: (i) reviewing the current legislation regarding the clinical engineering exercise; (ii) visiting hospitals and working as trainee to understand how this exercise is implemented on Brazil’s Federal District; (iii) one of the authors participated in virtual discussion groups of clinical engineering professionals, monitoring collective understanding of regulations, checking consistency of proper knowledge, and acting as an active opinion leader in the subject among peers. Results We try to make a formal definition of clinical engineer and indicate their characteristic activities. We propose a synthesis of the regulation regarding healthcare products’ integrity protection and health technology management, identifying the engineering activities necessary to achieve those legal requirements. We analyze the legal constraints and conditions to exert engineering, indicating the necessary professionals’ attributions and the way to obtain them. Finally, we provide a brief analysis of the technical requirements presented by the Brazilian Consumer Protection Code and of the 15.943 Brazilian Standard (NBR). Discussion We conclude that, despite the lack of consensus about the Clinical Engineering activity, there exists in Brazil a Clinical Engineering regulation, but it is spread in complex laws and normative resolutions, defining compulsory responsibilities and attributions, as well as conditions and prerequisites for role performance.
La prótesis sobre implantes es una buena alternativa de tratamiento frente a los tratamientos convencionales de prótesis total en pacientes con edentulismo total. Este tratamiento se ha venido ...realizando con éxito en losúltimos años y constituye una realidad clínica de alto valor. El presente artículo reporta el caso clínico de un paciente de sexo masculino fumador donde se realizó la rehabilitación del maxilar superior con una prótesis tipohibrida sobre 6 implantes. A continuación se describe paso a paso la elaboración de una prótesis implanto soportada, devolviéndole al paciente estética y funcionabilidad mejorando su calidad de vida..
El presente artículo muestra el reporte de un caso clínico donde se confeccionó una corona metal cerámica que fue adaptada a una prótesis parcial removible pre existente. Por lo general el ...tratamiento para estos casos es la confección de una nueva prótesis parcial removible adaptada a la nueva corona, lo cual implica mayor tiempo de trabajo y costo para el paciente. Diversos materiales y técnicas pueden ser utilizados para la realización de la corona como por ejemplo coronas de aleaciones metálicas completas, coronas metálicas con revestimiento cerámico y coronas libres de metal incluso con técnica CAD/CAM. A continuación se detalla paso a paso la elaboración de una corona metal cerámica con su respectiva preparación biostática adaptada de acuerdo a la forma preexistente de la base metálica de la PPR utilizada por el paciente.
PDF
