scholarly journals Multi-band optical light-curve behavior of core-collapse supernovae

2013 ◽  
Vol 9 (S296) ◽  
pp. 352-353
Author(s):  
Brijesh Kumar
Keyword(s):  
Spectroscopic Properties ◽  
Core Collapse ◽  
Study Behavior ◽  
Optical Light Curve ◽  
Survey Results ◽  
Light Color ◽  
Optical Telescopes ◽  
Observational Science ◽  
Insight Into

AbstractWe present survey results obtained from the UBVRI optical photometric follow-up of 19 bright core-collapse SNe during 2002-2012 using 1-m class optical telescopes operated by the Aryabhatta Research Institute of Observational Science (acronym ARIES), Nainital India. This homogeneous set of data have been used to study behavior of optical light/color curve, and to gain insight into objet-to-object peculiarity. We derive integrated luminosities for types IIP, Ibc and luminous SNe. Two peculiar type IIP events having photometric properties similar to normal IIP and spectroscopic properties similar to sub-lumnious IIP have been identified.

Survey of Critical Value Reporting and Reduction of False-Positive Critical Value Results

2008 ◽  
Vol 132 (10) ◽  
pp. 1666-1671
Author(s):  
Anand S. Dighe ◽  
Jay B. Jones ◽  
Sue Parham ◽  
Kent B. Lewandrowski
Keyword(s):  
False Positive ◽  
Critical Value ◽  
Critical Values ◽  
Broad Distribution ◽  
Written Responses ◽  
Standard Of Practice ◽  
Survey Results ◽  
Value Reporting ◽  
Insight Into

Abstract Context.—Reporting of laboratory critical values has become an issue of national attention because of important regulatory, medicolegal, and clinical concerns. Objective.—To survey aspects of the laboratory critical-value reporting process at a broad range of institutions. Design.—A survey was developed regarding the operational and information-technology aspects of critical value reporting. Results.—More than 730 responses were obtained from a broad distribution of hospitals. In addition, we analyzed more than 700 written responses from survey participants. Conclusions.—The survey results provide insight into the standard of practice and level of compliance with current Joint Commission and College of American Pathologists requirements for critical values, demonstrate considerable heterogeneity, and suggest areas for improvement. A common issue raised during the survey and follow-up teleconference was the incidence of outpatient false-positive critical values. In this report, we also demonstrate that attention to preanalytic transport and processing issues can assist in minimizing this issue.

scholarly journals Signatures of circumstellar interaction in the unusual transient AT 2018cow

2019 ◽  
Vol 488 (3) ◽  
pp. 3772-3782 ◽  
Author(s):  
Ori D Fox ◽  
Nathan Smith
Keyword(s):  
Light Curve ◽  
Spectroscopic Properties ◽  
Core Collapse ◽  
Blue Colour ◽  
X Ray ◽  
Bolometric Luminosity ◽  
Balmer Lines ◽  
H Ii Region ◽  
Fast Light

ABSTRACT AT 2018cow is a unique transient that stands out due to its relatively fast light curve, high peak bolometric luminosity, and blue colour. These properties distinguish it from typical radioactively powered core-collapse supernovae (SNe). Instead, the characteristics are more similar to a growing sample of Fast Blue Optical Transients (FBOTs). Mostly discovered at hundreds of Mpc, FBOT follow-up is usually limited to several photometry points and low signal-to-noise spectra. At only ∼60 Mpc, AT 2018cow offers an opportunity for detailed follow-up. Studies of this object published to date propose a number of interpretations for AT 2018cow, but none of these specifically consider the interacting Type Ibn SN subclass. We point out that while narrow lines do not dominate the spectrum of AT 2018cow, as narrow Balmer lines typically do in SNe IIn, the narrow lines in AT 2018cow may nevertheless include emission from pre-shock CSM. In particular, the He i lines in AT 2018cow are broader than H ii region lines in the same spectrum, and they closely resemble He i lines in some examples of SNe Ibn or transitional SNe Ibn/IIn objects. We compare AT 2018cow to interacting SNe Ibn and IIn and find a number of noteworthy similarities, including light-curve rise and fall times, peak magnitude, X-ray light curves, and spectroscopic properties. We therefore explore the hypothesis that CSM interaction in a relatively H-poor system might help explain some observed properties of AT 2018cow, and we go on to consider progenitor implications for AT 2018cow, FBOTs, and SNe Ibn.

Attitudes of Elderly People in the South Moravian Region to Further Education

2014 ◽  
Vol 4 (2) ◽  
pp. 54-78
Author(s):  
Petr Adamec ◽  
Marián Svoboda
Keyword(s):  
Quality Of Life ◽  
Elderly People ◽  
Further Education ◽  
The South ◽  
The Third ◽  
Interesting Insight ◽  
Survey Results ◽  
Insight Into ◽  
Demographic Features

This paper deals with the results of sociological survey focused on identification of the attitudes of elderly people to further education. The research was carried out in September 2010. Experience of elderly people with further education, their readiness (determination) for further education as well as their motivation and barriers in further education were also subjects of this research. Detecting elderly population’s awareness of universities of the third age and finding out their further education preferences were an integral part of the research. Research sample consisted of citizens over 55 years living in the South Moravian region. The survey results are structured by socio-demographic features e.g.: age, sex, educational attainment etc. and provide an interesting insight into the attitudes of the target group to one of the activities that contributes to improvement of their quality of life.

scholarly journals Good Idea But Not Here! A Pilot Study of Swedish Tourism Stakeholders’ Perceptions of Halal Tourism

2021 ◽  
Vol 13 (5) ◽  
pp. 2646
Author(s):  
Saeid Abbasian
Keyword(s):  
Content Analysis ◽  
Pilot Study ◽  
Tourism Industry ◽  
Target Group ◽  
Exploratory Research ◽  
Swedish Study ◽  
Increased Risk ◽  
Insight Into

The following study is the first Swedish study on Halal tourism in Sweden. The purpose of this exploratory research is to get insight into the perception of Halal tourism in Sweden among representatives of tourism stakeholders. The overall methodology approach in this research is qualitative, consisting of 25 qualitative questionnaires, 21 short letters, four follow-up interviews, and a web observation, and content analysis was employed. The results indicate that there is a low knowledge of Halal tourism in Sweden including Swedish tourism industry. The concept is very challenging, and profits are low. It might result in problem scenarios such as detrimental effects on non-Halal tourism, cultural difficulties and increased risk of xenophobia, anti-Islamism, and tension in the society. There is low interest for Sweden among Muslim tourists as the interest and priority for Halal tourism is rather low from Swedish tourism industry. Despite Halal tourism’s importance internationally, these representatives are rather cautious and doubtful about promotion of Sweden towards this niche. Still, a majority seems to be positive to a lighter version of Muslim-friendly tourism with secular/moderate Muslims as a target group.

scholarly journals The spontaneous resolution of a vortex vein varix: case report

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sara L Weidmayer ◽  
Hakan Demirci
Keyword(s):  
Case Report ◽  
Natural History ◽  
Extended Period ◽  
Spontaneous Resolution ◽  
Case Presentation ◽  
Clinical Resolution ◽  
History Of ◽  
Vortex Vein ◽  
Insight Into

Abstract Background The natural course of a vortex vein varix, though not well understood, has been known to remain stable. However, here we report a novel case of a vortex vein varix that resolved after an extended period of monitoring. Case presentation An asymptomatic 96-year-old Caucasian man was found to have a vortex vein varix. At his previous examination 13 months prior, his fundus was normal. At 13 months of observation, his vortex vein varix become clinically undetectable. Further follow-up confirmed continued absence of the varix. Conclusion This case demonstrates the development then clinical resolution of a vortex vein varix with no clear identifiable factors for its evolution. This case is novel and offers new insight into the natural history of some vortex vein varices, implicating venous congestion as an instigator and venous collateralization as its alleviator, suggesting that vortex vein varices are likely more common than previously reported since some may be temporary and under-identified.

scholarly journals The Implementation of Visual Comfort Evaluation in the Evidence-Based Design Process Using Lighting Simulation

2021 ◽  
Vol 11 (11) ◽  
pp. 4982
Author(s):  
Anahita Davoodi ◽  
Peter Johansson ◽  
Myriam Aries
Keyword(s):  
Performance Metrics ◽  
Analysis Data ◽  
Evidence Based ◽  
Visual Comfort ◽  
Simulation Tools ◽  
Post Occupancy Evaluation ◽  
Lighting Simulation ◽  
Insight Into

Validation of the EBD-SIM (evidence-based design-simulation) framework, a conceptual framework developed to integrate the use of lighting simulation in the EBD process, suggested that EBD’s post-occupancy evaluation (POE) should be conducted more frequently. A follow-up field study was designed for subjective–objective results implementation in the EBD process using lighting simulation tools. In this real-time case study, the visual comfort of the occupants was evaluated. The visual comfort analysis data were collected via simulations and questionnaires for subjective visual comfort perceptions. The follow-up study, conducted in June, confirmed the results of the original study, conducted in October, but additionally found correlations with annual performance metrics. This study shows that, at least for the variables related to daylight, a POE needs to be conducted at different times of the year to obtain a more comprehensive insight into the users’ perception of the lit environment.

Insight into morphological, physicochemical and spectroscopic properties of β-chitin nanocrystalline structures

2021 ◽  
Vol 273 ◽  
pp. 118563
Author(s):  
William Marcondes Facchinatto ◽  
Danilo Martins dos Santos ◽  
Andrea de Lacerda Bukzem ◽  
Tiago Bueno Moraes ◽  
Filipe Habitzreuter ◽  
...  
Keyword(s):  
Spectroscopic Properties ◽  
Nanocrystalline Structures ◽  
Insight Into

Otitis Media in Infancy: Tympanometric Findings

PEDIATRICS ◽  
1979 ◽  
Vol 63 (3) ◽  
pp. 435-442
Author(s):  
Jessie R. Groothuis ◽  
Sarah H. W. Sell ◽  
Peter F. Wright ◽  
Judith M. Thompson ◽  
William A. Altemeier
Keyword(s):  
Otitis Media ◽  
Acute Otitis Media ◽  
Chronic Otitis Media ◽  
Normal Pressure ◽  
Pressure Curve ◽  
Type B ◽  
History Of ◽  
Life Type ◽  
Insight Into

Ninety-one normal infants were followed longitudinally for varying periods from November 1975 to April 1977 to assess the correlation between tympanometry and pneumatic otoscopy and to study the pathogenesis of acute and chronic otitis media early in life. Type A (normal) tympanograms correlated with normal otoscopic findings in 92% of instances. Type B tympanograms, indicating reduced drum compliance with a relatively flat pressure curve, were associated with abnormal otoscopic findings in 93% of cases. The A8 (reduced compliance, normal pressure) and C (normal compliance, negative pressure) tympanograms were less consistent predictors of otoscopic findings. The correlation of tympanometric and otoscopic findings were similar in infants above and below 7 months of age. Tympanometry provided some insight into the natural history of otitis in 71 infants followed 12 to 17 months. Infants who failed to develop otitis had type B curves in only one of 240 determinations (0.4%). This pattern did not appear in those who developed acute otitis media (AOM) until the month preceding the first attack; nine of 29 tests (31%) made under these circumstances were type B. When a type B curve appeared in an asymptomatic study infant who had not previously had otitis, AOM developed within a month in nine of ten instances. At the time of diagnosis of first AOM, 87% of tympanograms were type B with the remainder type A8 or C. Sixty-three percent of tympanograms obtained from 25 infants during the six months following first AOM were type B, indicating that abnormal middle ear function was often prolonged. Fifteen of these 25 developed recurrent otitis during follow-up.

Treatment of Antidepressant-Resistant Bulimia with Naltrexone

1987 ◽  
Vol 16 (4) ◽  
pp. 305-309 ◽  
Author(s):  
Jeffrey M. Jonas ◽  
Mark S. Gold
Keyword(s):  
Eating Disorders ◽  
Preliminary Data ◽  
Endogenous Opioids ◽  
Opiate Antagonist ◽  
Percent Reduction ◽  
Bulimic Symptoms ◽  
Long Acting ◽  
Insight Into

Ten individuals with antidepressant-resistant bulimia were treated with the long-acting opiate antagonist naltrexone. Seven of the ten experienced at least a 75 percent reduction of their bulimic symptoms, and have maintained their improvment on three to five month follow-up. These preliminary data suggest that naltrexone may be of use in bulimia unresponsive to standard antidepressant therapy, and may provide insight into the role of endogenous opioids in the etiology of eating disorders.

scholarly journals Causes of Mortality in Older People With Intellectual Disability: Results From the HA-ID Study

2018 ◽  
Vol 123 (1) ◽  
pp. 61-71 ◽  
Author(s):  
Alyt Oppewal ◽  
Josje D. Schoufour ◽  
Hanne J.K. van der Maarl ◽  
Heleen M. Evenhuis ◽  
Thessa I.M. Hilgenkamp ◽  
...  
Keyword(s):  
Older Adults ◽  
Intellectual Disability ◽  
Cause Of Death ◽  
Causes Of Death ◽  
Circulatory System ◽  
Bacterial Diseases ◽  
Specific Mortality ◽  
Causes Of Mortality ◽  
Insight Into

Abstract We aim to provide insight into the cause-specific mortality of older adults with intellectual disability (ID), with and without Down syndrome (DS), and compare this to the general population. Immediate and primary cause of death were collected through medical files of 1,050 older adults with ID, 5 years after the start of the Healthy Ageing and Intellectual Disabilities (HA-ID) study. During the follow-up period, 207 (19.7%) participants died, of whom 54 (26.1%) had DS. Respiratory failure was the most common immediate cause of death (43.4%), followed by dehydration/malnutrition (20.8%), and cardiovascular diseases (9.4%). In adults with DS, the most common cause was respiratory disease (73.3%), infectious and bacterial diseases (4.4%), and diseases of the digestive system (4.4%). Diseases of the respiratory system also formed the largest group of primary causes of death (32.1%; 80.4% was due to pneumonia), followed by neoplasms (17.6%), and diseases of the circulatory system (8.2%). In adults with DS, the main primary cause was also respiratory diseases (51.1%), followed by dementia (22.2%).

Sign in / Sign up

Export Citation Format

Share Document