scholarly journals Viability of Northern Pin and White Oak Reserve Trees in Wisconsin Scrub Oak Sites

2009 ◽  
Vol 26 (3) ◽  
pp. 111-117 ◽  
Author(s):  
Elijah Mujuri ◽  
Michael C. Demchik

Abstract Retention of reserve trees can serve multiple objectives when harvests are conducted on scrub oak sites. The objective of the study was to determine the growth and vigor response of northern pin and white oak held as reserve trees from harvests occurring over a 15-year time period onscrub oak sites in Central Wisconsin. Reserve trees were evaluated for volume growth, epicormic branching, live crown ratio, and tree vigor. White oak maintained or improved in vigor and exhibited increased rates of volume growth with no measured mortality. Northern pin oak, although exhibitingincreased volume growth, tended to decline in vigor and experienced an overall annual mortality rate of 5.5%. For managers that are considering multiple objectives, white oak can provide a long-lived vigorous reserve tree while northern pin oak may survive but will experience decline and higherrates of mortality, which may contribute to a long-term goal of snag retention as an element of wildlife habitat.

2002 ◽  
Vol 18 (5) ◽  
pp. 1441-1454 ◽  
Author(s):  
Ziadir Francisco Coutinho ◽  
Delson da Silva ◽  
Márcia Lazéra ◽  
Valéria Petri ◽  
Rosely Magalhães de Oliveira ◽  
...  

This study analyzes 3,181 deaths from paracoccidioidomycosis in Brazil, based on 16 years of sequential data (from 1980 to 1995). During this period paracoccidioidomycosis showed considerable magnitude and low visibility, representing the eighth most common cause of death from predominantly chronic or recurrent types of infectious and parasitic diseases. It also had the highest mortality rate among the systemic mycoses. The mean annual mortality rate was 1.45 per million inhabitants, indicating a downward long-term trend (reduction of 31.28%), while spatial distribution among the different regions and States of Brazil was non-homogenous. The South (with the highest regional rate) and the Southeast showed a downward trend, while the Central West had the second highest rate in the country. At least one-fifth of Brazilian municipalities (or 22.71% of the country's total area) reported deaths from paracoccidioidomycosis. Overall nationwide mortality per area was 3.73/10,000km². The disease was endemic in non-metropolitan areas. The majority of deaths occurred in males (84.75%), and there was a sex ratio of 562 men/100 women. The 30-59-year and over-60-year age groups were the most affected. The study showed that the mortality rate justifies classifying this disease as a major health problem in Brazil.


2009 ◽  
Vol 39 (3) ◽  
pp. 489-496 ◽  
Author(s):  
John B. Bradford ◽  
Brian J. Palik

Long-term replicated experiments that contrast thinning method (dominant thinning, thinning from below) while controlling stocking level are rare. Stand growth and tree size responses to thinning method can be useful for making decisions to achieve desired objectives, whether these are timber or wildlife habitat related. We examined data from two long-term (>50 year old) silvicultural experiments in red pine to understand how alternative thinning prescriptions influence stand-level basal area, volume, and biomass growth, as well as quadratic mean tree diameter. We found that gross growth in stands treated with dominant thinning was often, although not always, greater than growth in stands treated with thinning from below. However, the differences in growth between thinning methods are smallest at stocking levels and stand ages typical for red pine management. We found that biomass growth increases with dominant thinning were generally less than basal area or volume growth increase. Furthermore, greater gross growth associated with dominant thinning versus thinning from below must be weighed against the significantly smaller average tree sizes that result from repeated dominant thinning.


2017 ◽  
Vol 42 ◽  
pp. 14-23 ◽  
Author(s):  
R.-E. Nielsen ◽  
A. Lolk ◽  
M. Rodrigo-Domingo ◽  
J.-B. Valentin ◽  
K. Andersen

AbstractBackgroundAlzheimer's disease (AD), the most common disease causing dementia, is linked to increased mortality. However, the effect of antipsychotic use on specific causes of mortality has not yet been investigated thoroughly.MethodsUtilizing the Danish nationwide registers, we defined a cohort of patients diagnosed with AD. Utilizing separate Cox regressions for specific causes of mortality, we investigated the effects of cumulative antipsychotic dosage after diagnosis and current antipsychotic exposure in the time period 2000–2011.ResultsIn total, 45,894 patients were followed for 3,803,996 person-years. A total of 6129 cardiovascular related deaths, 2088 cancer related deaths, 1620 infection related deaths, and 28 intentional self-harm related deaths are presented. Current antipsychotic exposure increased mortality rate with HR between 1.92 and 2.31 for cardiovascular, cancer, and infection related death. Cumulative antipsychotic dosages were most commonly associated with increased rates of mortality for cardiovascular and infection as cause of death, whereas the associations were less clear with cancer and intentional self-harm as cause of death.ConclusionsWe showed that cumulative antipsychotic drug dosages increased mortality rates for cardiovascular and infection as cause of death. These findings highlight the need for further investigations of long-term effects of treatment and of possible sub-groups who could benefit from treatment.


2005 ◽  
Vol 26 (2) ◽  
pp. 100-106 ◽  
Author(s):  
James D.A. Parker ◽  
Donald H. Saklofske ◽  
Laura M. Wood ◽  
Jennifer M. Eastabrook ◽  
Robyn N. Taylor

Abstract. The concept of emotional intelligence (EI) has attracted growing interest from researchers working in various fields. The present study examined the long-term stability (32 months) of EI-related abilities over the course of a major life transition (the transition from high school to university). During the first week of full-time study, a large group of undergraduates completed the EQ-i:Short; 32 months later a random subset of these students (N = 238), who had started their postsecondary education within 24 months of graduating from high school, completed the measures for a second time. The study found EI scores to be relatively stable over the 32-month time period. EI scores were also found to be significantly higher at Time 2; the overall pattern of change in EI-levels was more than can be attributed to the increased age of the participants.


2020 ◽  
Author(s):  
Rawand Essa

BACKGROUND In the span of COVID-19, the mortality rate has been different from one country to another. As a country in the Middle East Iraq has a critical position, lies between Iran and Turkey while both countries coronavirus cases increase on daily basis, while Iranian mortality rate record is high similar to Turkey. After Wuhan city of China, Lombard of Italy, Qum city in Iran has the highest number of COVID-19 as a first country in the Middle East. OBJECTIVE aim of this study is to show the effect of BCG vaccine during pandemic diseases, especially nowadays at the time of COVID-19. One of the crucial observations is the government preparedness and strategic planning prior pandemics, in which the BCG vaccine is an attenuated live vaccine for control of tuberculosis (TB). BCG vaccine has a non-specific immune effect that is used against pathogens like bacteria and viruses, through the promotion of pro-inflammatory cytokines' secretion. METHODS An epidemiological study has been performed, and it shows that some countries are more prone to contagious diseases like COVID-19, regardless of the main cultural, religious, societal similarities among the three mentioned countries. The information data has been collected from WHO reports and worldometer in 18 February 2020 to 10 May 2020. Regarding the efficacy of the BCG vaccine, relevant data has been retrieved from Google scholar, Pub-med and BCG world-atlas. RESULTS COVID-19 mortality rates are at peak in Iran and Turkey while the mortality rate is very low in Iraq, while the patients that died in Iraq all had history of other long-term diseases as heart disease, blood pressure, cancer etc. CONCLUSIONS From the experiences of the three countries in the life span of COVID-19, the historical plan of BCG vaccine in Iraq in cooperation with WHO since the last decades it shows that COVID-19 mortality rate is lower than other countries due to the early vaccination of the Iraqis, otherwise Iraq is more fragile than Iran and Turkey due to the poor conditions of Iraq in terms of economics, politics, war and other aspects.


2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 575-575
Author(s):  
Pamela Saunders

Abstract Sociolinguistics and discourse analysis provide tools through which to examine how friendship is socially constructed through language and communication. Research on social isolation and loneliness reveals the importance of social interaction on the psychological and physical health of older adults. Given that linguistic, communicative, and functional abilities decline as dementia progresses, it is challenging to identify markers of friendship. The Friendship Project is an ethnographic study of social interaction among persons with dementia living in a long-term care setting. The data are from transcripts and field-notes of social interactions among residents with a range of cognitive impairments over a six-month time period. Results reveal that persons with dementia employ specific linguistic features such as narrative, evaluation, evidentials, and pronominal reference to make meaning and create relationships over time. Practical implications will be discussed.


2021 ◽  
Vol 10 (2) ◽  
pp. 180
Author(s):  
Frédéric Bouisset ◽  
Jean-Bernard Ruidavets ◽  
Jean Dallongeville ◽  
Marie Moitry ◽  
Michele Montaye ◽  
...  

Background: Available data comparing long-term prognosis according to the type of acute coronary syndrome (ACS) are scarce, contradictory, and outdated. Our aim was to compare short- and long-term mortality in ST-elevated (STEMI) and non-ST-elevated myocardial infarction (non-STEMI) ACS patients. Methods: Patients presenting with an inaugural ACS during the year 2006 and living in one of the three areas in France covered by the Monitoring of Trends and Determinants in Cardiovascular Disease (MONICA) registry were included. Results: A total of 1822 patients with a first ACS—1121 (61.5%) STEMI and 701 (38.5%) non-STEMI—were included in the study. At the 28-day follow-up, the mortality rates were 6.7% and 4.7% (p = 0.09) for STEMI and non-STEMI patients, respectively, and after adjustment of potential confounding factors, the 28-day probability of death was significantly lower for non-STEMI ACS patients (Odds Ratio = 0.58 (0.36–0.94), p = 0.03). At the 10-year follow-up, the death rates were 19.6% and 22.8% (p = 0.11) for STEMI and non-STEMI patients, respectively, and after adjustment of potential confounding factors, the 10-year probability of death did not significantly differ between non-STEMI and STEMI events (OR = 1.07 (0.83–1.38), p = 0.59). Over the first year, the mortality rate was 7.2%; it then decreased and stabilized at 1.7% per year between the 2nd and 10th year following ACS. Conclusion: STEMI patients have a worse vital prognosis than non-STEMI patients within 28 days following ACS. However, at the 10-year follow-up, STEMI and non-STEMI patients have a similar vital prognosis. From the 2nd year onwards following the occurrence of a first ACS, the patients become stable coronary artery disease patients with an annual mortality rate in the 2% range, regardless of the type of ACS they initially present with.


Author(s):  
Macarena Valdés Salgado ◽  
Pamela Smith ◽  
Mariel Opazo ◽  
Nicolás Huneeus

Background: Several countries have documented the relationship between long-term exposure to air pollutants and epidemiological indicators of the COVID-19 pandemic, such as incidence and mortality. This study aims to explore the association between air pollutants, such as PM2.5 and PM10, and the incidence and mortality rates of COVID-19 during 2020. Methods: The incidence and mortality rates were estimated using the COVID-19 cases and deaths from the Chilean Ministry of Science, and the population size was obtained from the Chilean Institute of Statistics. A chemistry transport model was used to estimate the annual mean surface concentration of PM2.5 and PM10 in a period before the current pandemic. Negative binomial regressions were used to associate the epidemiological information with pollutant concentrations while considering demographic and social confounders. Results: For each microgram per cubic meter, the incidence rate increased by 1.3% regarding PM2.5 and 0.9% regarding PM10. There was no statistically significant relationship between the COVID-19 mortality rate and PM2.5 or PM10. Conclusions: The adjusted regression models showed that the COVID-19 incidence rate was significantly associated with chronic exposure to PM2.5 and PM10, even after adjusting for other variables.


1988 ◽  
Vol 12 (4) ◽  
pp. 252-256 ◽  
Author(s):  
Stephen G. Dicke ◽  
John R. Toliver

Abstract Crown thinning a 63-year-old stand of baldcypress (Taxodium distichum [L.] Rich.) averaging 220 ft²/ac of basal area to 180, 140, and 100 ft²/ac resulted in 5-year diameter growths of 0.44, 0.51, and 0.77 in., respectively. The unthinned control was significantly less at 0.31 in. Six-year height growth averaged 3.1 ft and was not influenced by treatment. Thinning to 140 and 100 ft²/ac stimulated epicormic branching on many trees, which may lower log quality. All crown thinning treatments appeared to increase sawtimber volume increment and sawtimber volume/ac over the control 5 years after thinning. South. J. Appl. For. 12(4):252-256.


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