scholarly journals Population fluctuations and timing of spring migration of the Scandinavian Bluethroat Luscinia svecica svecica at Ottenby Bird Observatory, Sweden, 1955–2008

Ornis Svecica ◽  
2011 ◽  
Vol 21 (2–4) ◽  
pp. 92-100
Author(s):  
Staffan Svanberg ◽  
Jonas Waldenström
Keyword(s):  
Spring Migration ◽  
Population Fluctuations ◽  
Short Term ◽  
Luscinia Svecica ◽  
Local Weather ◽  
Age And Sex ◽  
Population Numbers

In this study, 54 years (1955–2008) of consecutive trapping data from Ottenby Bird Observatory on the island of Öland, SE Sweden, was used to analyze the spring passage of the Scandinavian subspecies of the Bluethroat Luscinia svecica svecica. The aim was to investigate trends in the numbers of Bluethroat passing this site and to provide statistics related to the phenology of migration. Trapping of Bluethroats at Ottenby may be seen as an index of population numbers in the recruitment area, especially for the latest decades when trapping conditions have been standardized. The number of trapped individuals was stable both in the long and short term, but median spring passage has become significantly earlier over the study period. The spring migration of the species showed clear age and sex related differences in timing. Male Bluethroats preceded females with about three days, and adult birds preceded juveniles of both sexes. Finally, the local weather during the peak passage significantly affected the number of trapped individuals, with the largest number trapped in days with head winds from the northwest sector.

scholarly journals Which symptoms pose the highest risk in patients calling for an ambulance? A population-based cohort study from Denmark

2021 ◽  
Vol 29 (1) ◽  
Author(s):  
Stine Ibsen ◽  
Tim Alex Lindskou ◽  
Christian H. Nickel ◽  
Torben Kløjgård ◽  
Erika Frischknecht Christensen ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Cohort Study ◽  
Chest Pain ◽  
Emergency Medical Service ◽  
Medical Service ◽  
Population Based ◽  
Mechanism Of Injury ◽  
Short Term ◽  
Risk Of Death ◽  
Age And Sex

Abstract Background Emergency medical service patients are a vulnerable population and the risk of mortality is considerable. In Denmark, healthcare professionals receive 112-emergency calls and assess the main reason for calling. The main aim was to investigate which of these reasons, i.e. which symptoms or mechanism of injury, contributed to short-term risk of death. Secondary aim was to study 1–30 day-mortality for each symptom/ injury. Methods Historic population-based cohort study of emergency medical service patients calling 112 in the North Denmark Region between 01.01.2016–31.12.2018. We defined 1-day mortality as death on the same or the following day. The frequency of each symptom and cumulative number of deaths on day 1 and 30 together with 1- and 30-day mortality for each symptom/mechanism of injury is presented in proportions. Poisson regression with robust variance estimation was used to estimate incident rates (IR) of mortality with 95% confidence intervals (CI), crude and age and sex adjusted, mortality rates on day 1 per 100,000 person-year in the population. Results The five most frequent reasons for calling 112 were “chest pain” (15.9%), “unclear problem” (11.9%), “accidents” (11.2%), “possible stroke” (10.9%), and “breathing difficulties” (8.3%). Four of these contributed to the highest numbers of deaths: “breathing difficulties” (17.2%), “unclear problem” (13.2%), “possible stroke” (8.7%), and “chest pain” (4.7%), all exceeded by “unconscious adult – possible cardiac arrest” (25.3%). Age and sex adjusted IR of mortality per 100,000 person-year was 3.65 (CI 3.01–4.44) for “unconscious adult – possible cardiac arrest” followed by “breathing difficulties” (0.45, CI 0.37–0.54), “unclear problem”(0.30, CI 0.11–0.17), “possible stroke”(0.13, CI 0.11–0.17) and “chest pain”(0.07, CI 0.05–0.09). Conclusion In terms of risk of death on the same day and the day after the 112-call, “unconscious adult/possible cardiac arrest” was the most deadly symptom, about eight times more deadly than “breathing difficulties”, 12 times more deadly than “unclear problem”, 28 times more deadly than “possible stroke”, and 52 times more deadly than “chest pain”. “Breathing difficulties” and “unclear problem” as presented when calling 112 are among the top three contributing to short term deaths when calling 112, exceeding both stroke symptoms and chest pain.

Small spate disturbance and the complexity of habitat architecture in Mountain River, Tasmania

1996 ◽  
Vol 47 (6) ◽  
pp. 851 ◽  
Author(s):  
BJ Robson
Keyword(s):  
Benthic Invertebrates ◽  
Base Flow ◽  
Temporal Context ◽  
Population Fluctuations ◽  
Mountain River ◽  
Similar Magnitude ◽  
Short Term ◽  
Before And After ◽  
Study Sites ◽  
The Impact

Densities of benthic invertebrates were counted over several weeks before and after a small winter spate (15.5 times base flow) in two riffle types of contrasting architectural complexity in Mountain River, Tasmania. Complex benthic architecture reduced the impact of this spate on invertebrate densities over the short term (seven days). Longer-term recovery (several weeks) was unaffected by riffle architecture, with one of the riffles recovering much more slowly than the others. Refuges from small spates in Mountain River may exist in mid channel in complex boulder-cobble riffles. Within its temporal context, the effects of the spate on the study sites were of a similar magnitude to other unexplained population fluctuations.

scholarly journals AGE AND SEX DIFFERENCES IN THE TIMING OF SPRING MIGRATION OF HAWKS AND FALCONS

2003 ◽  
Vol 115 (3) ◽  
pp. 321-324 ◽  
Author(s):  
HELMUT C. MUELLER ◽  
DANIEL D. BERGER ◽  
NANCY S. MUELLER
Keyword(s):  
Sex Differences ◽  
Spring Migration ◽  
Age And Sex

Abstract P155: Low Socioeconomic Status Relates to Short-term Mortality Risk After Acute Myocardial Infarction, Especially in Men: Results From a Nationwide Study

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Louise van Oeffelen ◽  
Charles Agyemang ◽  
Carla Koopman ◽  
Michiel Bots ◽  
Karien Stronks ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Low Socioeconomic Status ◽  
Case Fatality ◽  
Day Case ◽  
Short Term ◽  
Low Socioeconomic ◽  
Nationwide Study ◽  
Short Term Mortality ◽  
Age And Sex

Introduction Previous studies show poorer short-term prognosis after an acute myocardial infarction (AMI) in subjects with a low socioeconomic status (SES). Yet, the magnitude of these relations may differ by age and sex. Data on these issues are however scarce. Methods A nationwide Dutch cohort of first AMI patients between January 1 st 1998 and December 31 st 2007 was identified through linkage of national registers. SES was defined as the standardized disposable income on household level in 1997. For every SES quintile, age- and sex- specific short-term mortality rates were quantified. Logistic regression models were used to estimate differences between SES quintiles in out-of-hospital mortality and 28-day case-fatality. Results We identified 70.368 first AMI patients with income data available, of which 55.860 were men and 14.508 were women. There were strong inverse associations between SES and both short-term mortality outcomes when comparing the lowest with the highest income quintile (out-of-hospital mortality: Odds Ratio (OR) 1.26; 95% Confidence Interval (95% CI) 1.18–1.34), 28-day case-fatality: OR 1.26; 95% CI 1.15–1.37). For men graded relations were found across quintiles of SES, whereas for women only differences between the lowest and the highest quintile were seen. These relations remained consistent across all age categories, except for women below 55 years of age. Conclusion The results from our nationwide study show an increased risk of short-term mortality after a first AMI in subjects with a low SES of all ages, which is most pronounced in men.

Role of predation in short-term population fluctuations of some birds and mammals in Fennoscandia

Oecologia ◽  
1984 ◽  
Vol 62 (2) ◽  
pp. 199-208 ◽  
Author(s):  
P. Angelstam ◽  
E. Lindstr�m ◽  
P. Wid�n
Keyword(s):  
Population Fluctuations ◽  
Short Term

scholarly journals Sepsis-related hospital admissions and ambient air pollution: a time series analysis in 6 Chinese cities

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yu Wang ◽  
Zhen Liu ◽  
Lian Yang ◽  
Jiushun Zhou ◽  
Jia Li ◽  
...  
Keyword(s):  
Air Pollution ◽  
Time Series ◽  
Hospital Admissions ◽  
Ambient Air ◽  
Air Pollutant ◽  
Additive Models ◽  
Short Term ◽  
Short Term Exposure ◽  
Hospital Stays ◽  
Age And Sex

Abstract Background Some prevalent but rarely studied causes of hospital admissions, such as sepsis is still unknown whether affected by air pollution. Methods We used time-series regression within generalized additive models to estimate the effect of air pollutant level on the sepsis-related hospital admissions, for the years 2017–18, using data from six cities in Sichuan, China. Potential effect modifications by age and sex were also explored. The effects of air pollutant on hospital stays for sepsis were also quantified. Results Positive associations between short-term exposure to NO2 and O3 and risk of sepsis-related hospital admissions and stays were found. Each 10 μg/m3 increase in short-term NO2 at lag 03 and O3 at lag 4 was associated with an increase of 2.76% (95% CI: 0.67, 4.84%) and 0.64% (95% CI: 0.14, 1.14%) hospital admissions, respectively. An increase of 0.72% (95% CI: 0.05, 1.40%) hospital stay was associated with 10 μg/m3 increase in O3 concentration at lag 4. Besides, the adverse effect of exposure to NO2 was more significant in males and population aged less than 14 years; while more significant in females and population aged 14 ~ 65 and over 65 years for exposure to O3. These associations remained stable after the adjustment of other air pollutants.8. Conclusion Exposure to ambient NO2 and O3 may cause substantial sepsis hospitalizations, and hospital stays in Sichuan, China. These associations were different in subgroup by age and sex.

scholarly journals Investigation on Wind Power Generation for Different Heights on Bechar, South West of Algeria

2019 ◽  
Vol 01 (02) ◽  
pp. 198-203 ◽  
Author(s):  
Mamer Dahbi ◽  
Mebrouk Sellam ◽  
Ali Benatiallah ◽  
Abdelkader HARROUZ ◽  
◽  
...  
Keyword(s):  
Wind Turbine ◽  
Wind Power ◽  
Renewable Energy Sources ◽  
Energy Resource ◽  
Clean Energy ◽  
Weather Data ◽  
Short Term ◽  
Promising Alternative ◽  
Wind Potential ◽  
Local Weather

The wind energy is one of the most significant and rapidly developing renewable energy sources in the world and it provides a clean energy resource, which is a promising alternative in the short term in Algeria. The main purpose of this paper is to present, the wind potential in Bechar (Southwest of Algeria) and to discuss the potential for electricity generation based on the local weather data for different heights and typical wind turbine characteristics. A case studied investigation allows wind speed and wind power density to be obtained using different hub heights, and the annual power generated and annual operating hours by the wind turbine to be simulated.

scholarly journals Modeling the Number of COVID-19 Confirmed Cases and Deaths in Puerto Rico: One-year Experience

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Suarez EL ◽  
◽  
Reyes JC ◽  
Perez CM ◽  
Mattei H ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Generalized Additive Models ◽  
Additive Models ◽  
Downward Trend ◽  
Short Term ◽  
R Software ◽  
Risk Of Death ◽  
Department Of Health ◽  
One Year ◽  
Age And Sex

Aims: To describe and project the number of COVID-19 cases and deaths reported in Puerto Rico, according to age and sex. Methods: We used surveillance data from March 8, 2020 to March 13, 2021 to describe and predict, by age and sex, the number of cases and deaths in Puerto Rico using Generalized Additive Models. The statistical modeling was performed in R software using the mgcv package. Results: The analytic sample consisted of 95,208 confirmed cases and 2,080 deaths reported by the Puerto Rico Department of Health until the second week of March 2021. The risk of COVID-19 infection was highest among adults aged 20-59 years, as compared with those younger than 20 years (RR20-39 vs. <20: 2.35 [95% CI: 1.80-3.06] and (RR20-59 vs. <20: 2.30 [95% CI: 1.76-3.00]). However, the pattern in the risk of death showed an inverse relationship: the highest risk of death occurred in adults 60 years and over as compared with those younger than 60 years (RR≥80 vs. <60: 22.4 [95% CI: 18.9-26.5] and (RR60-79 vs. <60: 6.7 [95% CI: 5.6-7.9]). Although there were no significant differences in the risk of infection (p>0.1) by sex, males had a 70% (95% CI: 50-100%) greater risk of death than their female counterparts. The projected weekly number of confirmed cases of COVID-19 showed a downward trend; we expected approximately 510 confirmed cases of COVID-19 in the week ending March 27, 2021. Similarly, the projected weekly number of COVID-19 deaths showed a downward trend. Conclusion: Future studies are needed to understand age and sex differences in COVID-19 infections and deaths. Increments in the number of COVID-19 cases in the short term are of great concern to justify more substantial preventive restrictions.

A Distributed Short-Term Load Forecasting Method Based on Local Weather Information

2018 ◽  
Vol 12 (1) ◽  
pp. 208-215 ◽  
Author(s):  
Dunnan Liu ◽  
Long Zeng ◽  
Canbing Li ◽  
Kunlong Ma ◽  
Yujiao Chen ◽  
...  
Keyword(s):  
Load Forecasting ◽  
Short Term ◽  
Weather Information ◽  
Forecasting Method ◽  
Short Term Load Forecasting ◽  
Local Weather
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