INFLUENCE OF TEMPERATURE, DURATION OF CONDITIONING, AND AGE OF ANAGASTA (EPHESTIA) KÜHNIELLA (ZELL.) (LEPIDOPTERA:PYRALIDIDAE) ON ACCLIMATION TO A SUB-ZERO TEMPERATURE

1960 ◽  
Vol 38 (1) ◽  
pp. 131-141 ◽  
Author(s):  
A. S. Atwal

When Anagasta (Ephestia) kühniella pupae of age groups 0.5, 1.5, 2.5, 3.5, and 4.5 days were conditioned at 5°, 10°, 15°, 20°, and 25 °C for 1, 2, 4, 8, and 16 hours, the mortality due to subsequent exposure at −15 °C for 4 hours was affected by each of the three factors, age, temperature, and duration of conditioning. As the temperature of conditioning was lowered from 25° to 10 °C, the mortality due to the sub-zero exposure gradually decreased; when conditioned at 5 °C mortality increased again. When conditioned for 1–16 hours the lowest average mortality was among the pupae conditioned for 4 hours; mortality was highest for 1 and 16 hours. Regardless of the temperature and duration of conditioning, pupal mortality due to sub-zero exposure increased as the age increased.Pupae conditioned at 10 °C, when deacclimated at 25 °C for 2–8 hours, exhibited a gradual increase in mortality, showing a tendency to reach the same high level as among the unacclimated.Adults 1.5, 2.5, 3.5, 4.5, 5.5, and 6.5 days old, when exposed to −15 °C for various durations, exhibited only a slight difference in the time required to kill 50% (ET50) in each of the age groups; the two oldest groups required the shortest exposures, between 50 and 60 minutes. Moths of a given age group, when conditioned at 10 °C, exhibited higher mortality after sub-zero exposure than the controls; hence, there was no acclimation. Without a subsequent sub-zero exposure, conditioning at 10 °C had no lethal effect on the insects.

2015 ◽  
Vol 68 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Nikoletta Nagy ◽  
Csaba Ökrös ◽  
Csaba Sós

AbstractIn 2017, the 19th World Swimming Championship will be organized in Hungary. Up to now, many people have already been working with swimmers to achieve good results. However, in the next period they must work even harder to ensure that the national swimmers of a country as small as Hungary can achieve the outstanding results of their predecessors. Since high-level competitions in swimming have become more intense, innovations including scientific studies are needed during preparation for the event. The purpose of this paper is to present the major results of an independent study carried out by the authors about the relative age of the best Hungarian swimmers with the aim of contributing to their preparation. The research population consisted of selected age groups of swimmers registered by the Hungarian Swimming Association (N=400). The method for data collection was an analysis of documents. To evaluate the data, the Chi-square and Kruskal-Wallis tests were used. The results are presented according to the period of the competitor’s date of birth, gender, and age group. The results confirm only partly the hypothesis that people born in the first quarters of the year play a dominant role in Hungarian national swimming teams. In the conclusion, the authors recommend further research on relative age in swimming and in other sports.


Author(s):  
A.G. Khotuleva ◽  
◽  
A.V. Karpushina ◽  
L.P. Kuzmina

Abstract. Summary. The leading cause of mortality, temporary and permanent disability is "age-dependent" (age-associated) diseases, the main of which are pathologies of the cardiovascular system. The aim of this study was to analyze the prevalence of diseases of the circulatory system in workers of the transport industry in various age groups. Materials and methods. The data of objective periodic and preliminary medical examinations conducted in the FSBSI «Izmerov Research Institute of Occupational Health», among Metro employees for people, were analyzed. The assessment was carried out in various age groups, starting from the age of 30 to 70 years (in increments of 5 years). The prevalence of diseases of the circulatory system in workers of different ages was analyzed. Results. There is a pronounced tendency to increase the prevalence of diseases of the cardiovascular system with age in Metro workers. There was a significant increase in the relative risk of diseases characterized by high blood pressure in all age groups relative to the previous age group, except for the 70-74 year group, in which the risk does not increase relative to the 65-69 year group, which indicates a gradual increase in the prevalence of the disease with increasing age. The prevalence of coronary heart disease (CHD) was also estimated. An increase in the frequency of occurrence of this pathology has been shown from the age of 55-59 years.


2018 ◽  
Vol 25 (3) ◽  
pp. 17-22 ◽  
Author(s):  
Oscar Romero-Ramos ◽  
Emilio Fernández-Rodríguez ◽  
Rafael Merino-Marbán ◽  
Daniel Mayorga-Vega ◽  
Robert Podstawski

Abstract Introduction. Cross triathlon is a sport consisting of three segments: swimming, off-road cycling, and running. Our study analyses the differences in performance between genders and changes in performance in selected age categories at the ITU Cross World Championships held between 2011 and 2016. Material and methods. During this period, a total of 1,933 triathletes were analysed (1,472 men and 461 women). Two-way analyses of variance (ANOVA) were used to examine the impact of sex differences and age-related changes on performance (time, percentage of time, and performance ratio) in swimming, cycling, running, and total race. Results. The age groups with the highest level of participation were persons aged 40-44 and 45-49 years among men and women, respectively. With regards to performance in the different age groups, in men and women, its high level was maintained between 25 and 49 years, and it decreased significantly from the age of 50-54. In men, the best results in cycling and total race time were obtained in the 30-34 age group and in swimming and running in the 40-44 group. Women obtained the best results in running in the 25-29 age group, in cycling in the 30-34 group, and in swimming and total race time in the 35-39 group. Conclusions. The results of the study have confirmed that there is a demand for sports in 40+ age groups. As for performance in the different age groups, it was on a high level between 25 and 49 years and decreased significantly from the age of 50-54 onwards. According to these results, the sports training of these triathletes should be oriented so that they obtain their best results between 30 and 35 years of age.


2019 ◽  
Vol 39 (1) ◽  
pp. 47-53
Author(s):  
Md Sohail

The paper deals with the job satisfaction of the library and information professionals working in government and the private sector libraries in the Fiji. The study was carried out in relation to what is the happiness level of working with their co-workers and how much they are satisfied with their wages and job securities. Library professionals have experienced ignoble and asymmetrical salary payments, lacks of proper housing, inadequate facilities in libraries, low social status given to them and limited opportunities for professional development in Fiji. The main purpose of this study is to find out the major factors affecting career choices, level of job satisfaction, and perceptions of the general image of library professionals in Fiji. This article explores, how much satisfaction of these library professionals, derive from their chosen career and examine the degree of dissatisfaction or areas of discontent among then. Results show that the female professionals are more satisfied from their job as compared to males. Library professionals who are much experienced are possess a proportionately high level of job satisfaction as compared to other age groups. Whereas, those professionals are between ages of 28-35, having a comparatively ignoble level of job satisfaction, compared to another age group of professionals. Unmarried professionals possess a comparatively ignoble level of job satisfaction as compared to married or widow and separated hold comparatively high job satisfaction.


Author(s):  
Cherkasov S.N. ◽  
Polozkov O.I. ◽  
Fedyaeva A.V. ◽  
Avsadzhanishvili V.N.

The purpose of the study: to study the influence of the level of education on the degree of compliance of the population of older age groups. Materials of research. Data from a survey of 1,045 people of both sexes aged 60 years and older were used. The proposed questionnaire included three questions that characterize the level of compliance with medical recommendations, as well as the attitude to self-medication. The results were evaluated for men and women separately in two age groups of 60–74 years and 75 years and older. Results. Women are more compliant with the doctor's prescriptions, as they are more likely to perform them in full. With increasing age, the degree of compliance significantly increases in both men and women, and therefore, the differences between the sexes are leveled. The level of education affects the behavior in relation to the fulfillment of doctor's appointments only in men in the age group of 75 years and older and does not affect the age group of 60–74 years. In women, there was no significant effect in both age groups. Men and women with higher levels of education are more likely to make doctor's appointments only in some cases. A greater proportion of non-respondents, that is, doubters, is also observed in the group of men and women with a high level of education, regardless of age. The results of responses to specific questions concerning the degree of compliance confirmed earlier conclusions about the greater degree of compliance of older women compared to men. A large proportion of doubting men and women with a high level of education, regardless of age, requires a more attentive attitude to them in terms of providing additional information about the need and importance of following doctor's prescriptions.


Author(s):  
Cherkasov S.N. ◽  
Polozkov O.I. ◽  
Fedyaeva A.V. ◽  
Kamaev Yu.O.

The purpose of the study: to study the influence of the level of education on the behavioral patterns associated with medical care of the population of older age groups. Materials and methods of research. The results of an anonymous survey of 1,045 people of both sexes aged 60 years and older were analyzed. The questionnaire included a question about the reasons for visiting medical organizations. The results were evaluated separately for men and women in two age groups of 60–74 years and 75 years and older. Results. There were no significant gender differences in the characteristics of medical activity among the studied cohorts of older age groups. The most common form of behavior regardless of gender was the reactive type, when seeking medical help occurred as a result of health problems. A high level of education contributes to a change in behavior towards a greater prevalence of active behavior in relation to the reasons for seeking medical help. These patterns are observed regardless of gender and are more pronounced in the age group of 75 years and older. Men and women with a low level of education are more likely to choose a reactive type of behavior when seeking medical help occurs after the appearance of health problems. The frequency of passive behavior does not depend on the level of education and is more often recorded in the age group of 60–74 years.


2014 ◽  
Vol 3 ◽  
Author(s):  
Alikhan Shortanbayev ◽  
Beibitgul Bizhigitova ◽  
Anel Tarabayeva ◽  
Aliya Nurmuchanbetova

Introduction. The study of the cytokine profile during aging is interesting because age-related changes of the immune status are usually correlate with the onset of specific diseases. Characteristics of cytokine activity in the elderly can not only detail the pathogenesis of the disease but also help to choose the appropriate therapeutic strategy, which in addition to the therapeutic effect could improve the quality of life of the elderly. The purpose of this study was to examine cytokine levels in older adults.Material and methods. We examined 268 people aged 45-80 years and older. All surveyed individuals were divided into 8 different age groups. All participants were tested for concentrations of IL-1β, IL-2, TNF-a and IFN-γ.Results. The study found that concentrations of TNF-a increased with age. For age group 45-49, the concentration of TNF-a was 5.94 pcg/ml. In older age groups, there was a gradual increase in cytokine concentration. In a group of centenarians, concentration of TNF-a  reached 20.55 pcg/ml, which is 3.4 times higher compared to the middle age group. Similar trends were found in the concentration of IL-1. For the age group of 45-49, the concentration of IL-1 b was 3.38 pcg/ml, and in the age group of 80 years and older, levels of this cytokine increased almost 5 times. It was found that with age-related there is a gradual decrease in the level of IL-2, and a gradual increase of IFN-γ. The decrease in IL-2 is due to the typical aging decrease in the amount of T-lymphocytes.Conclusion. Thus, our results indicate that there are significant deviations of immune parameters, particularly in cytokine concentrations, in older adults compared to middle aged adults. 


2019 ◽  
Vol 24 (1) ◽  
pp. 52
Author(s):  
Mahmood Nafi Mahmood1 ◽  
Adeeba Younis Shareef2

The study aims to correlate infection with rubella, cytomegalovirus and abortion at different age groups. Blood samples were collected through the period between beginning of February to the end of September 2017, one hundred and twenty-seven women exposed to abortion and thirty apparently health controls. Serum samples were tested for IgM and IgG antibodies for rubella and cytomegalovirus. The results showed that CMV was the most common infection with high level of IgM antibodies (15.7%) and IgG (12.5%), only 0.7% of the cases gave positive results for rubella IgM, and 6.2% had rubella IgG while the control group only 6.6% had CMV IgM, and 3.3% had CMV IgG antibody. All the age groups did not show infection with rubella except age 25-31 years as 2.1% and 8.5% had IgM and IgG respectively. The highest rate of infection with CMV was at age group 25-31 years (21.2%) then age group 18-24 years (13.7%). Most of the patients experienced two abortions were reported at age group 25-31 years, 1.5% and 4.7% of CMV infected patient experienced 3 and 2 respectively while 1.5% of rubella infected patients had only one abortion, 18.1% of the patients with CMV experienced 2 abortions had cut off >1.25. Hundred % of the patients with rubella had cut off value of > 1.25 experienced one abortions.   http://dx.doi.org/10.25130/tjps.24.2019.008  


Author(s):  
kadir karkin ◽  
ergün alma ◽  
Hakan Erçil ◽  
keremhan gözükara ◽  
ferhat ortaoğlu ◽  
...  

We aimed to investigate the relationship between COVID-19 and Erectile Dysfunction (ED) and the effect of serum testosterone level on the disease prognosis. Between April-December 2020, 70 patients who admitted with a complaint of ED after having COVID-19 and whose serum testosterone level was checked for any reason before COVID-19. The patients filled the International Index of Erectile Function (IIEF-5) and their testosterone level was checked. This questionnaire was arranged to present the first month before COVID-19 and after COVID-19. The patients were registered as 20-40 age group 1, 40-60 age group 2 and 60 years and above group 3. Testosterone levels of the patients before and after COVID-19 were compared. The relationship between testosterone levels and hospitalization in the intensive care was evaluated. It was revealed that testosterone levels and IIEF-5 scores after COVID-19 in all three groups were statisticaly and significantly different compared to the period before COVID-19 (p <0.05). Testosterone levels of patients in need of intensive care were significantly higher than those without any need of intensive care (p <0.05). Our study has presented that COVID-19 may cause ED and high testosterone levels increase the rate of hospitalization in the intensive care by intensifying the disease. Keywords COVID-19, erectile dysfunction, testosterone What’s already known about this topic? The relationship between Erectile Dysfunction (ED) and COVID-19 develops due to vasculogenic and hormonal causes which were caused by the primary disease. What does this article add? We showed with this study that COVID-19 causes ED in all age groups, reduces testosterone levels seriously. Moreover, we also presented that the higher the testosterone levels during COVID-19, the more severe the disease progresses.


1996 ◽  
Vol 135 (2) ◽  
pp. 188-192 ◽  
Author(s):  
Olli Vakkuri ◽  
Aarre Kivelä ◽  
Juhani Leppäluoto ◽  
Maija Valtonen ◽  
Antti Kauppila

Vakkuri O, Kivelä A, Leppäluoto J, Valtonen M, Kauppila A. Decrease in melatonin precedes folliclestimulating hormone increase during perimenopause. Eur J Endocrinol 1996;135:188–92. ISSN 0804–4643 Melatonin, the hormone of the pineal gland, which in animal studies has been found to inhibit aging processes, is secreted in smaller amounts towards senescence. Menopause, an aging process in women, is known to be associated with typical changes in gonadotropin and sex steroid secretion. Our main objective was to study the possible role of melatonin in the hormonal regulation of menopause. This study focused on detailed changes in melatonin and follicle-stimulating hormone (FSH) secretion cross-sectionally in pre- to postmenopausal females. Special attention was paid to females aged around 50 years, which is the mean menopausal age. Seventy-seven healthy female volunteers aged 30–75 years were the subjects of this study. Melatonin was measured radioimmunologically from nocturnal urine collected between 20.00 and 08.00 h, and FSH and melatonin from blood samples taken at 09.00 h. Nocturnal urinary excretion of melatonin was found to decline significantly from premenopause to postmenopause. The youngest premenopausal women (age group 30–39 years) excreted the highest amounts of melatonin (21.1 ± 2.2 pmol/h, mean±sem, N = 17). In the age group 40–44 years the excretion declined by 41% (p < 0.05). The second significant decline (35%, p < 0.05) took place between the age groups 50–54 years and 55–59 years. A declining trend as a function of age was also seen in morning serum melatonin. Serum FSH rose sharply to high levels before the age of 50 (p < 0.01) and remained at a high level thereafter. Urinary melatonin correlated negatively with serum FSH (r = −0.32. p < 0.05). In conclusion, the inverse changes in melatonin and FSH secretion during the perimenopausal years, with the sharpest decline in nocturnal excretion of melatonin far before menopause, suggest that melatonin may be permissively linked to the initiation of menopause. O Vakkuri. Department of Physiology. University of Oulu, Kajaanintie 52 A, 90220 Oulu, Finland


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