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Tkachenko, L. V. "ANALYSIS OF MORTALITY STRUCTURE OF MATURE STRAY DOGS (SECTIONAL STUDY)." Vestnik of Ulyanovsk state agricultural academy 250 (June 25, 2021): 141–47. http://dx.doi.org/10.18286/1816-4501-2021-2-141-147.
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Stray animals are such animals that are left without owner’s care, they are part of society, serving as sources of zooanthroponosis. There are no works devoted to analysis and classification of death causes of stray animals on Altai Territory. Objective of the research is to study mortality structure of stray mature dogs. The objects of research were the corpses of 41 sexually mature stray dogs from the Altai Territory, and kept by volunteers and animal protection organizations in the period 2017-2020. Research methods include registration of an animal; autopsy; photographing; statistical processing and analysis of the obtained data. The results showed that 33% of the studied stray dogs died as a result of the action of toxic substances of unknown nature (poisoning), at the age of 3-4 years and 7-8 years; 22% - infectious diseases, at the age of from 6 months up to 5-6 years old; 15% - dirofilariasis, at the age of 2 years and 4-7 years 4 10% - extensive heart thrombosis, at the age of 1-3 years, 5-6 years and over 10 years; 10% - mechanical injuries (car injuries), at the age of 3-8 years; 7% - mechanical asphyxia, at the age of 5, 6 and 10 years; 2% - cancer, at the age of 2 years. The death causes of stray dogs are the result of the action of toxic substances of unknown nature (poisoning); infectious diseases (plague of carnivores and piroplasmosis); autointoxication (sources: stomach, intestines, liver, pancreas); car injuries; closing of the larynx lumen with a foreign object and liver cancer with metastases.
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Tkachenko, L. V. "ANALYSIS OF MORTALITY STRUCTURE OF MATURE STRAY DOGS (SECTIONAL STUDY)." Vestnik of Ulyanovsk state agricultural academy 250 (June 25, 2021): 141–47. http://dx.doi.org/10.18286/1816-4501-2021-2-141-147.
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Stray animals are such animals that are left without owner’s care, they are part of society, serving as sources of zooanthroponosis. There are no works devoted to analysis and classification of death causes of stray animals on Altai Territory. Objective of the research is to study mortality structure of stray mature dogs. The objects of research were the corpses of 41 sexually mature stray dogs from the Altai Territory, and kept by volunteers and animal protection organizations in the period 2017-2020. Research methods include registration of an animal; autopsy; photographing; statistical processing and analysis of the obtained data. The results showed that 33% of the studied stray dogs died as a result of the action of toxic substances of unknown nature (poisoning), at the age of 3-4 years and 7-8 years; 22% - infectious diseases, at the age of from 6 months up to 5-6 years old; 15% - dirofilariasis, at the age of 2 years and 4-7 years 4 10% - extensive heart thrombosis, at the age of 1-3 years, 5-6 years and over 10 years; 10% - mechanical injuries (car injuries), at the age of 3-8 years; 7% - mechanical asphyxia, at the age of 5, 6 and 10 years; 2% - cancer, at the age of 2 years. The death causes of stray dogs are the result of the action of toxic substances of unknown nature (poisoning); infectious diseases (plague of carnivores and piroplasmosis); autointoxication (sources: stomach, intestines, liver, pancreas); car injuries; closing of the larynx lumen with a foreign object and liver cancer with metastases.
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Zacher, Hannes, and Angelika Bock. "Mature age job seekers: the role of proactivity." Journal of Managerial Psychology 29, no. 8 (November 4, 2014): 1082–97. http://dx.doi.org/10.1108/jmp-05-2012-0158.
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Purpose – In the context of demographic and economic changes, helping mature age job seekers find employment is imperative. The purpose of this paper is to examine mature age job seekers’ proactive personality as a moderator of the relationship between age and job search intensity; and to examine job search self-efficacy as a mediator of this moderation effect. It was hypothesized that the generally negative relationships between age and job search self-efficacy and intensity are weaker among job seekers with a more proactive personality. Design/methodology/approach – In total, 188 job seekers between 40 and 64 years completed an online questionnaire. Data were analyzed using structural equation modeling. Findings – Consistent with previous research, age was negatively related to job search intensity. Proactive personality was positively related to job search intensity and moderated the relationship between age and job search intensity. Extending previous research, proactive personality also positively predicted job search self-efficacy and moderated the relationship between age and job search self-efficacy which, in turn, positively predicted job search intensity. Research limitations/implications – Potential limitations of the study include the cross-sectional design, sample selectivity, and the omission of possibly important control variables. Practical implications – Practitioners, organizations, and societies concerned with helping mature age job seekers find employment could provide additional support to those with a less proactive personality and low job search self-efficacy. Originality/value – This study extends previous research by showing that mature age job seekers’ job search self-efficacy mediates the moderating effect of proactive personality on the relationship between age and job search intensity.
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Hatt, Sue, Arthur Baxter, and Richard Kimberlee. "‘It's Our Last Chance’ — A Study of Completion Rates by Age at an English University." Journal of Adult and Continuing Education 8, no. 1 (November 2002): 88–103. http://dx.doi.org/10.7227/jace.8.1.7.
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Although the UK has one of the highest graduation rates in the world, some groups of students are more likely than others to complete their degree. This article examines the completion rates of mature and younger students on a large undergraduate social science programme at a new university in England in the late 1990s. Drawing on quantitative data and interviews with staff and students, this article compares the reasons why students enter HE, the factors affecting their motivation and attendance and the issues they face if they are to complete the programme. Although younger students have higher rates of completion than ‘matures’, they also account for the majority of the non-completers. Since non-completion is a wasteful process, both groups warrant attention. Students in the younger age groups can find it hard to negotiate the transition to university life and this can lead to non-attendance and the risk of failure. For mature students, the pressures on their time can be acute making it difficult for them to continue if personal circumstances change. As universities have expanded their intake, they need to review their teaching and learning strategies, their assessment regime and their support and guidance systems to ensure that they cater for all groups within a more diverse student body.
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Netto, Claudia Cardoso, Vivian Cristine Correia Vieira, Lizanka Paola Figueiredo Marinheiro, Sherry Agellon, Hope Weiler, and Mário Roberto Maróstica Jr. "Are skeletally mature female rats a suitable model to study osteoporosis?" Arquivos Brasileiros de Endocrinologia & Metabologia 56, no. 4 (June 2012): 259–64. http://dx.doi.org/10.1590/s0004-27302012000400007.
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OBJECTIVE: To analyze if female Wistar rats at 56 weeks of age are a suitable model to study osteoporosis. MATERIALS AND METHODS: Female rats with 6 and 36 weeks of age (n = 8 per group) were kept over a 20-week period and fed a diet for mature rodents complete in terms of Ca, phosphorous, and vitamin D. Excised femurs were measured for bone mass using dual-energy x-ray absorptiometry, morphometry, and biomechanical properties. The following serum mar-kers of bone metabolism were analyzed: parathyroid hormone (PTH), osteocalcin (OC), osteoprotegerin (OPG), receptor activator of nuclear factor Κappa B ligand (RANKL), C-terminal peptides of type I collagen (CTX-I), total calcium, and alkaline phosphatase (ALP) activity. RESULTS: Rats at 56 weeks of age showed important bone metabolism differences when compared with the younger group, such as, highest diaphysis energy to failure, lowest levels of OC, CTX-I, and ALP, and elevated PTH, even with adequate dietary Ca. CONCLUSION: Rats at 26-week-old rats may be too young to study age-related bone loss, whereas the 56-week-old rats may be good models to represent the early stages of age-related changes in bone metabolism.
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Veneranta, Lari, Irma Kallio-Nyberg, Irma Saloniemi, and Erkki Jokikokko. "Changes in age and maturity of anadromous whitefish (Coregonus lavaretus) in the northern Baltic Sea from 1998 to 2014." Aquatic Living Resources 34 (2021): 9. http://dx.doi.org/10.1051/alr/2021007.
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The maturation of anadromous whitefish (Coregonus lavaretus) was analysed from samples taken from commercial coastal fishing in 1998–2014 in the Gulf of Bothnia. Whitefish matured at a younger age from year to year. The proportion of older (5–12 sea years) mature males decreased from 79% to 39% in the northern Gulf of Bothnia (66°N–64°N) and from 76% to 14% in southern (64°N–60°30'N) during the study period. At the same time, the proportion of young males (2–4 sea years) increased. Whitefish matured younger: the proportion of mature fish at age four increased in both the north and south among females (13% → 98%; 6% → 85%) and males (68% → 99%; 29% → 89%). The catch length of four-year-old fish increased during the study period in both sexes. In contrast, the length of six-year-old females decreased from year to year. Sea surface temperatures increased during the study period, and were possibly associated with a decrease in the age of maturation and faster growth.
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O'Shea, S., and C. Stone. "Transformations and self-discovery: mature-age women's reflections on returning to university study." Studies in Continuing Education 33, no. 3 (November 2011): 273–88. http://dx.doi.org/10.1080/0158037x.2011.565046.
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Scott, Catherine, Ailsa Burns, and George Cooney. "Reasons for discontinuing study: The case of mature age female students with children." Higher Education 31, no. 2 (March 1996): 233–53. http://dx.doi.org/10.1007/bf02390446.
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Ersoy, I. E., M. Mendeş, and S. Aktan. "Growth curve establishment for American Bronze turkeys (short communication)." Archives Animal Breeding 49, no. 3 (October 10, 2006): 293–99. http://dx.doi.org/10.5194/aab-49-293-2006.
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Abstract. The purpose of this study was to establish the growth curves parameters of American Bronze turkeys. The weekly body weight changes of male and female turkeys were recorded during 11 to 24 weeks of age. The Richards' growth model fitted the turkey weight and age (week) data. Profile analysis was also applied to weight-age data in order to get more detailed information about the differences in the live weights of male and female turkeys in consecutive weeks. Estimates for mature body weight were found as 9720.40 ± 971.33 g and higher for males than for females as 6029.96 ± 316.55 g. Based on Richards’ model, male turkeys matured more slowly and it was needed that a more time to reach mature body weight than female turkeys. Results of profile analysis supported those results. Estimates for the absolute growth rate, absolute maturing rate and relative growth rate values were higher for females when compared to males. Male turkeys reached the maximum growth rate at 16.30 weeks of age whereas female ones reached the maximum growth rate at 12.85 weeks of age. Live weights of male and female turkeys, when both reached the maximum growth rate, were 3475.61 g and 2156.06 g, respectively. Male turkeys reached 80 % of their mature weights at 24 weeks of age, whereas female ones reached 92% of their mature weight.
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Lim, Jong Mi, and Ok-Hee Cho. "Factors Influencing Career Preparation Behavior of Mature Age Student Nurses." Journal of Korean Academy of Fundamentals of Nursing 28, no. 1 (February 26, 2021): 23–31. http://dx.doi.org/10.7739/jkafn.2021.28.1.23.
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Purpose: This study was done to determine the correlations among grit, social support, career barriers, and career preparation behavior in mature age nursing students, and identify factors influencing their career preparation behavior.Methods: This cross-sectional, descriptive study included 106 undergraduate nursing students aged 25 years or older at the time of entering three universities in Korea. Grit, social support, career barriers, and career preparation behavior were investigated using structured questionnaires. Data analyses included descriptive statistics, independent t-test, one-way ANOVA, Pearson’s correlation analysis, and stepwise multiple regression analysis and were performed with the SAS program (version 9.4).Results: The factors influencing career preparation behavior of mature age nursing students included: persistence of efforts (β=.35, p<.001) and consistency of interests (β=-.21, p=.011) under the sub-domains of grit; informational support (β=.29, p<.001) under the sub-domains of social support; lack of job information (β=-.36, p<.001) and anxiety about the future(β=.28, p=.008) under the sub-domains of career barriers. These variables accounted for approximately 42% of the variance in career preparation behavior.Conclusion: The findings imply that in order to improve the career preparation behavior and lower the career barriers of mature age nursing students, their individual cognitive and psychological characteristics should be considered while providing diverse job information as part of career guidance.
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Indraswono, Cahyo, and Anggreni Dian Kurniawati. "Manufacturing Corporate Life Cycle and Discretionary Accruals with Piecewise Linear Model." Media Ekonomi dan Manajemen 35, no. 1 (January 10, 2020): 61. http://dx.doi.org/10.24856/mem.v35i1.1195.
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<p>This study aimed to investigate the effect of life cycle at the critical point of the growth mature and mature-stagnant stages of discretionary accruals and the effect of company age on discretionary accruals. In addition, this study also examines the differences of discretionary accruals in growth-mature stage and mature-stagnant stage. The data observation in this study is financial statement data of 341 manufacturing companies listed on Indonesia Stock Exchange in 2015-2017. The dependent variable is discretionary accruals that focuses on the piecewise linear model and the independent variables are the life cycle and the company age. Life cycle grouped into two critical point stages, namely the growth-mature stage and the mature-stagnant stage. Multiple linear regression is used to test hypotheses. The results show that there is a negative effect on growth-mature and mature stagnant in critical points of the discretionary accruals and there is a positive effect on the company age on discretionary accruals. Moreover, this study also proves that there are differences in discretionary accruals at growth-mature stage and mature-stagnant stage.</p>
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Farkas, Leslie G., Jeffrey C. Posnick, and Tania M. Hreczko. "Growth Patterns of the Face: A Morphometric Study." Cleft Palate-Craniofacial Journal 29, no. 4 (July 1992): 308–14. http://dx.doi.org/10.1597/1545-1569_1992_029_0308_gpotfa_2.3.co_2.
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Age-related growth changes in the face and the relationships between its parts were calculated by using three vertical, two horizontal, and two projective surface measurements from 1,594 healthy North American Caucasians between 1 and 18 years of age. By 1 year, the width of the mandible was highly developed (80.2%) while its height reached only 66.6% of the eventual adult size. The mandible's height and width showed significant development between 1 and 5 years, while the face height, upper face height, face width, and the two face depth measurements exhibited continuous gradual growth after 5 years of age. In general, the face matured between 12 and 15 years in males and 2 years earlier in females. At 12 years, the upper face height, the mandible height, and the width of the face reached their mature size in females. At 15 years, the face height, mandible height, face width, and the depth of the mandible reached maturity in males.
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Kapoor, Deepika. "Age estimation using Orthopantomograph and Willems method in Chitwan population: an original study." Journal of College of Medical Sciences-Nepal 14, no. 2 (July 30, 2018): 98–101. http://dx.doi.org/10.3126/jcmsn.v14i2.19324.
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ABSTRACTBackground: Utilization of age estimation has increased manifold in recent years. Various methods available for age estimation before the complete dentition has erupted and matured till the root closure stage include Nolla’s stages, Demirijan”s method, modified Demirijan’s method by Willems, Haavikko’s method. So, in this study we have tested that on Chitwan population of Nepal.Materials and methods: 60 patients between the ages 6-16 were selected and digital orthopantomographs of each of the patients was taken and then Demerijian method was applied and age estimation done by Willems method. Whereas the chronolical age was known and the reliability of this method on this population checked.Results: The study shows correlation between chronological age CA and estimated dental age DA in males - .965 while in females - .861 and it is statistically significantConclusion: There was an underestimation of age i.e. the dental age was found out to be less than the actual chronological age of the sample. This shows the dental growth lag in the Chitwan population. It was also found that when a comparison is done between the males and females it is found out that the females mature earlier than the males.
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Kenny, Amanda, Tracy Kidd, Katrina Nankervis, and Sarah Connell. "Mature age students access, entry and success in nurse education: An action research study." Contemporary Nurse 38, no. 1-2 (April 2011): 106–18. http://dx.doi.org/10.5172/conu.2011.38.1-2.106.
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Synytsya, Tetiana, and Liudmyla Shesterova. "Study of the relevance recreative aerobics exercises for women of the first mature age." Слобожанський науково-спортивний вісник 62, no. 6 (December 30, 2017): 97–101. http://dx.doi.org/10.15391/snsv.2017-6.019.
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Irving, J., and C. Kulik. "WORK OR WALK? A NATIONAL MIXED-METHOD STUDY OF MATURE AGE WORKERS AND RETIREES." Innovation in Aging 1, suppl_1 (June 30, 2017): 604–5. http://dx.doi.org/10.1093/geroni/igx004.2116.
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Sazonov, S. V. "AGE FEATURES OF MORPHOGENETIC PROPERTIES OF LYMPHOID CELLS OF THE SPLEEN." Journal of Ural Medical Academic Science 17, no. 2 (2020): 149–60. http://dx.doi.org/10.22138/2500-0918-2020-17-2-149-160.
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Aim. The aim of the study is to determine the features of the morphogenetic properties of the spleen lymphoid cells in animals of different age groups. Materials and research methods. In the experiments, a model of adoptive transfer of lymphoid cells of the spleen of nephrectomized animals from different age groups was used. The studies were carried out on male Wistar rats of mature (8-10 months, weighing 200-250 g) and old (19-22 months, weighing 400-500 g) age. Study groups: control group — model of adoptive transfer of splenocytes from mature animals to mature ones; second — experimental group: model of adaptive transfer of lymphoid cells from old — old animals; the third group — transplantation of lymphoid cells from old animals — to mature ones; the fourth group — transplantation of lymphoid cells from mature animals — to old ones. The morphogenetic properties of the spleen cells of nephrectomized animals from different age groups were studied 19 hours after unilateral nephrectomy (donor interval). The resulting suspension was injected intravenously into recipients at 400×10³ cells per 0.2 kg of animal weight. 8 hours before slaughter, the animals received a single intraperitoneal dose of 2 mg/kg of vinblastine. Recipients were sacrificed 40, 48 and 56 hours after splenocyte transfer. Research results. Transplantation of splenocytes obtained from old donors to old recipients did not reveal any stimulation of proliferative processes in the epithelium of the kidney tubules of the latter. The transfer of the same splenocytes to mature donors is accompanied by the manifestation of their morphogenetic function. At the same time, the activity of proliferative processes in the kidneys of the recipients was not less pronounced than in the control group.
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Pechacek, Judith M., Diana Drake, Carrie Ann Terrell, and Carolyn Torkelson. "Interprofessional Intervention to Support Mature Women: A Case Study." Creative Nursing 21, no. 3 (2015): 134–43. http://dx.doi.org/10.1891/1078-4535.21.3.134.
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Understanding the impact interprofessional teamwork has on patient outcomes is of great interest to health care providers, educators, and administrators. This article describes one clinical team, Women’s Health Specialists, and their implementation of an interprofessional health intervention course: “Mindfulness and Well-being: The Mature Woman” (MW: MW) to support mature women’s health needs in midlife (age 40–70 years) and empower patient involvement in self-care. The provider team works to understand how their interprofessional education and collaborative practice (IPECP) interventions focused on supporting midlife women are associated with improved quality and clinical outcomes. This case study describes the work of the Women’s Health Specialists clinic in partnership with the National Center for Interprofessional Education and Collaborative Practice to study the impact an interprofessional team has on the health needs of women in midlife. This article summarizes the project structure, processes, outputs, and outcomes. Data collection, analysis, strategy, and next steps for future midlife women’s projects are also discussed.
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Lieber-Milo, Shiri. "Cute at an older age: A case study of Otona-Kawaii." Mutual Images Journal, no. 10 (December 20, 2021): 93–108. http://dx.doi.org/10.32926/2021.10.lie.otona.
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The word kawaii, meaning ‘cute and sweet’ in English, has been part of the Japanese culture for centuries. While the word and trend were historically associated with young women and children, there has recently been an attempt to expand the definition of kawaii outside of its traditional borders to other age and gender groups by creating uniquely synthesised words and trends. The newly coined term otona-kawaii [‘adult-cute’] refers to mature women who passed their teen years and continue to dress cute and behave innocent and adorable. In this paper, a focus will be taken upon the new concept of otona-kawaii, and how it is defined and evaluated by the Japanese people. Results of a recent survey conducted among male and female respondents between the ages of 18 to 29, showed that many of them were in favour of the idea of behaving cute at an older age. It was also found that women were more familiar with the term otona-kawaii and had a more positive approach towards it than men. The results of the study suggest that kawaii can be extended beyond infants and may apply to other age populations, such as mature women. The aim of this study is to bridge the gap between kawaii and maturity by providing some empirical evidence and information, bringing to a deeper understanding of the concept of kawaii, contributing to the scholarship of the kawaii culture in Japan.
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Walkow, J., G. Sullivan, D. Maness, and G. J. Yakatan. "Sex and Age Differences in the Distribution of 14C-Sterigmatocystin in Immature and Mature Rats: A Multiple Dose Study." Journal of the American College of Toxicology 4, no. 1 (January 1985): 45–51. http://dx.doi.org/10.3109/10915818509014503.
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Sterigmatocystin, a secondary fungal metabolite, produces a toxic reaction upon administration to experimental animals. Examination of rats that have received multiple doses of 14C-sterigmatocystin may indicate the response elicited by repeated exposure to foodstuffs containing the mycotoxin. Daily doses of sterigmatocystin, 8 mg/kg equally divided over 13 days, were administered in the feed. Immature rats (50–150 g) and mature rats (200–300 g) of both sexes were studied. On the 14th day, an 8 mg/kg dose of 14C-sterigmatocystin dissolved in wheat germ oil was orally intubated into the rats. Five rats of each sex and age group were sacrificed at 3, 6, 12, 24, 48, and 96 hours. Biological specimens were collected and analyzed for total radioactivity. Tukey's paired comparison procedure was used to analyze for statistically significant differences in tissue exposure to 14sterigmatocystin due to age and sex. Statistically significant differences in tissue levels were found in 60% or more of the tissues when comparing mature males vs. immature females and mature males vs. mature females. Age and sex differences were also observed in 45% or less of the tissues in other age or sex comparisons. The sterigmatocystin plasma levels vs. time curves contain multiple peaks that may indicate enterohepatic recirculation. The gradual decline in the log-linear phase resulted in long half-lives, ranging from 61.5 to 130 hours.
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Timofeeva, E. B., G. I. Semenova, A. M. Timofeeva, and V. A. Shemytihin. "Nordic walking as an effective means of developing endurance in women of mature age." Current Issues of Sports Psychology and Pedagogy 2, no. 3 (2022): 39–43. http://dx.doi.org/10.15826/spp.2022.3.36.
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In the life of modern society, women of mature age play an important role. They perform many socially significant functions. A high level of endurance is necessary for the normal active life of women of mature age. Nordic walking as a cyclic sport contributes to the development of general and special endurance. The purpose of the study is to identify the possibilities of Nordic walking as a means of increasing the endurance of women of mature age. The study involved 15 women aged 35 to 55 years, whose training in health-improving physical culture was carried out on the basis of the use of Nordic walking 2-3 times a week. Testing consisted of 3 km Nordic walking over rough terrain and was carried out 2 times in 6 months. Differences between baseline and endpoints in walking with sticks for 3 km, suggests that Nordic walking is an effective means of developing endurance in women of mature age.
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Vlaschenko, Anton, Kseniia Kravchenko, Yehor Yatsiuk, Vitalii Hukov, Stephanie Kramer-Schadt, and Viktoriia Radchuk. "Bat Assemblages Are Shaped by Land Cover Types and Forest Age: A Case Study from Eastern Ukraine." Forests 13, no. 10 (October 20, 2022): 1732. http://dx.doi.org/10.3390/f13101732.
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Eastern European broadleaved forests north of the 50th degree of latitude serve as a core breeding area for most migratory bat species wintering in Eastern and Central Europe. The southern border of this region has faced an increase in clear-cutting intensity in recent decades. We conducted a standardized mist-netting survey on eleven heterogeneous oak forest plots in order to assess how land cover types and forest age affect abundance, diversity and the breeding of bats. We found that abundance indices and species richness increased from upland plots surrounded by agricultural lands to riverine or waterside plots with high forest cover. Particularly large mature forests older than 90 years positively affected the breeding activity of bats, their abundance indices and overall species richness. Regarding species associations with specific habitats, we found that Myotis brandtii, Nyctalus leisleri and Pipistrellus pygmaeus were mainly found in mature deciduous forest stands, while Plecotus auritus appeared to be the only species tolerating clearcuts and young stands. Forest-dwelling species such as Nyctalus noctula and Pipistrellus nathusii were additionally associated with water habitats. Thus, the combination of mature forests and water sources is essential in shaping Eastern European assemblages of forest bat species.
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Sherpa, P., R. Baral, and TK Kansakar. "Malignant transformation arising in mature cystic teratoma." Journal of Pathology of Nepal 6, no. 12 (September 24, 2016): 981–84. http://dx.doi.org/10.3126/jpn.v6i12.16267.
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Background: The prognosis of patients with malignant transformation arising within mature cystic teratoma is poor. However, preoperative diagnosis is dif cult due to its rarity. The aim of this study was to evaluate the clinical and histopathological characteristics of such malignancies. Materials and Methods: A retrospective cross sectional study on a series of cases was performed in the Department of Pathology, Patan Academy of Health Sciences, Patan Hospital, Lalitpur, Nepal from April 2011 to March 2016. Data from the histopathology database were analyzed using SPSS version 16.0. Results: Mature cystic teratoma comprised 230 cases (57.6%) out of total 399 cases of ovarian neoplasms. Malignant transformation was noted in 7 (3%) of the mature cystic teratoma. The mean age at diagnosis of patients with malignant transformation of mature cystic teratoma was 47.57 years. The size of the tumors ranged from 7-14cm. The mean diameter of tumor was 10.28cm. There was signi cant difference in age between mature cystic teratoma and malignant transformations arising within mature cystic teratoma. No signi cant association was noted in tumor size. Torsion was noted in a single case. Squamous cell carcinoma was the most common malignant tumor seen in 5 cases. The TNM stage distribution was T1aNx for 4 cases, T2aNx for one case and T3aNx for 2 cases. Conclusion: Squamous cell carcinoma is the most common malignancy arising in mature cystic teratoma. Advanced age is a signi cant risk factor for malignant transformation in mature cystic teratoma.
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Laux, Lila F. "A Follow-up of the Mature Driver Study: Another Look at Age and Sex Effects." Proceedings of the Human Factors Society Annual Meeting 35, no. 3 (September 1991): 164–66. http://dx.doi.org/10.1177/154193129103500301.
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Skamp, Keith. "Attitudes of pre-service mature age women students towards teaching primary science: An interview study." Research in Science Education 22, no. 1 (December 1992): 377–86. http://dx.doi.org/10.1007/bf02356918.
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Pina, Juliana Moreno, Sérgio Tadeu Meirelles, and Regina Maria de Moraes. "Meteorological conditions, ozone concentration and leaf age affect gas exchange in Psidium guajava ‛Palumaʼ." Hoehnea 44, no. 2 (April 2017): 236–45. http://dx.doi.org/10.1590/2236-8906-50/2016.
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ABSTRACT This study aimed to investigate the importance of leaf age, meteorological conditions and ozone concentration (O3) on gas exchange of Psidium guajava ‛Paluma'. Saplings were grown and exposed in standard conditions in the city of São Paulo, in six periods of three months with weekly measurements in young and mature leaves. Gas exchanges were higher in young leaves for almost the entire experiment. Mature leaves showed greater reduction in gas exchange. The multivariate analysis of biotic and abiotic variables indicated that vapor pressure deficit (VPD), O3 concentration and radiation were the main variables associated with gas exchange decrease in young leaves. In mature leaves the influence of VPD is lower, but the temperature importance is higher. Moreover, the opposition between assimilation and O3 is more evident in mature leaves, indicating their greater sensitivity to O3.
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Zhou, Qi, and Juan Carlos Melgar. "Tree Age Influences Nutrient Partitioning among Annually Removed Aboveground Organs of Peach." HortScience 55, no. 4 (April 2020): 560–64. http://dx.doi.org/10.21273/hortsci14731-19.
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The aim of this research was to assess how fruit tree age influences nutrient partitioning patterns in aboveground organs. We selected 6-year-old (mature) and 20-year-old (old) ‘Cresthaven’ peach trees and measured the macronutrient concentrations in organs removed during pruning, thinning, harvesting, and leaf fall for 3 years. Then, we calculated the total amount of nutrients removed at each event and studied the partitioning patterns between mature and old peach trees. The results showed that mature peach trees had higher phosphorus (P) and potassium (K) concentrations in fruit mesocarp and fallen leaves than old trees. When we estimated the total nutrient content, mature peach trees allocated more nitrogen (N), P, K, and calcium (Ca) to pruned wood and harvested fruit but had less N and Ca in senescing leaves compared with old peach trees. The results of this study suggest that the different proportion of organs removed through orchard management practices from trees of different ages as well as the concentration of nutrients in these organs must be considered when estimating nutrient restitution needs and tree nutritional requirements.
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Enkhbayar, E., and G. Gereltsetseg. "Results of the study of some biochemical values in dog after spaying." Mongolian Journal of Agricultural Sciences 15, no. 2 (September 30, 2015): 16–21. http://dx.doi.org/10.5564/mjas.v15i2.539.
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It is sometimes necessary to remove gonad of a dog during various age. In order to define the optimal age for spaying (ovariohysterectomy) female dogs, our study objectives were to investigate changes of hormonal and biochemical values in both immature and mature female dogs after spaying. Results of the study on sex hormone levels at different stages of female dog estrous cycle and biochemical values of only mature dogs were presented in this article. Highest progesterone concentration in female puppy occurs during diestrus (20-35 ng/ml), and estradiol level peaked (25-35 pg/ml) during proestrus. In mature dogs for one year after ovariohysterectomy, total proteins in plasma increased by 13.3%, albumin elevated by 31.1%, total lipids by 2.3 times, cholesterol by 3 times and plasma glucose by 2.3 times. Results of the study revealed removal of gonads or ovaries in female dogs leads to greater changes of metabolism, especially lipid or cholesterol metabolism disturbs at highest levelsMongolian Journal of Agricultural Sciences Vol.15(2) 2015; 16-21
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Lee, Jungmin. "A Study on Creativity as Mature Narcissism for ‘Creative Ageing’ : Focusing on Heinz Kohut's Self Psychology." Korean Society of Culture and Convergence 44, no. 12 (December 31, 2022): 883–94. http://dx.doi.org/10.33645/cnc.2022.12.44.12.883.
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The purpose of this study is to find out about creativity, a mature and healthy variant of narcissism, claimed by Heinz Kohut's Self Psychology, and to lay the theoretical basis for the psychological driving force behind the life of “creative aging” in old age. To this end, literature research was mainly conducted based on related books and papers, and through the case analysis of the elderly in Korea, how creativity as a mature narcissism can be realized as a “creative aging” life was examined. Based on Kohut's theory of self psychology, the study shows that old age can realize the life of “creative aging” by demonstrating creativity, a transformation of mature narcissism, through everyday experiences such as culture and arts education, and developing life and thoughts creatively. To this end, a wide cultural and artistic educational environment that can promote creativity and 'creative aging' should be established.
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Martin, Philip, Martin Jung, Francis Q. Brearley, Relena R. Ribbons, Emily R. Lines, and Aerin L. Jacob. "Can we set a global threshold age to define mature forests?" PeerJ 4 (February 4, 2016): e1595. http://dx.doi.org/10.7717/peerj.1595.
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Globally, mature forests appear to be increasing in biomass density (BD). There is disagreement whether these increases are the result of increases in atmospheric CO2concentrations or a legacy effect of previous land-use. Recently, it was suggested that a threshold of 450 years should be used to define mature forests and that many forests increasing in BD may be younger than this. However, the study making these suggestions failed to account for the interactions between forest age and climate. Here we revisit the issue to identify: (1) how climate and forest age control global forest BD and (2) whether we can set a threshold age for mature forests. Using data from previously published studies we modelled the impacts of forest age and climate on BD using linear mixed effects models. We examined the potential biases in the dataset by comparing how representative it was of global mature forests in terms of its distribution, the climate space it occupied, and the ages of the forests used. BD increased with forest age, mean annual temperature and annual precipitation. Importantly, the effect of forest age increased with increasing temperature, but the effect of precipitation decreased with increasing temperatures. The dataset was biased towards northern hemisphere forests in relatively dry, cold climates. The dataset was also clearly biased towards forests <250 years of age. Our analysis suggests that there is not a single threshold age for forest maturity. Since climate interacts with forest age to determine BD, a threshold age at which they reach equilibrium can only be determined locally. We caution against using BD as the only determinant of forest maturity since this ignores forest biodiversity and tree size structure which may take longer to recover. Future research should address the utility and cost-effectiveness of different methods for determining whether forests should be classified as mature.
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Anderson, Paul D., John C. Zasada, Glen W. Erickson, and Zigmond A. Zasada. "Thinning in mature eastern white pine: 43-year case study." Forestry Chronicle 78, no. 4 (August 1, 2002): 539–49. http://dx.doi.org/10.5558/tfc78539-4.
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A white pine (Pinus strobus L.) stand at the western margin of the species range, approximately 125 years of age at present, was thinned in 1953 from 33.5 m2 ha-1 to target residual basal areas of 18.4, 23.0, 27.5, and 32.1 m2 ha-1 . Repeated measurement over the following 43-years indicated that the greatest total volume production and the greatest number of large diameter trees occurred in the unit of highest residual density. Over time, the distribution of stems was predominantly random although mortality between 1979 and 1996 resulted in a tendency for clumping in the 23.0 and 27.5 m2 ha-1 treatments. DNA analysis indicated that thinning intensity had little effect on the genetic diversity of residual white pine. This study suggests that mature white pine stands in northern Minnesota may be managed at relatively high densities without loss of productivity. However, regardless of overstory density, there was little or no white pine regeneration occurring in this stand. Key words: thinning, growth, genetic diversity, molecular markers, spatial pattern, regeneration
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Goeman, Katie, and Nick Deschacht. "The learning strategies of mature students: a study of social science students in Belgium." Journal of Applied Research in Higher Education 11, no. 4 (October 14, 2019): 814–27. http://dx.doi.org/10.1108/jarhe-04-2018-0063.
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Purpose Though different claims are made in the literature with regard to learning approach differences between mature and non-mature university students, the issue seems to bare detailed study. The purpose of this paper is to report about an investigation of mature and non-mature university students’ learning strategies. The authors examine the relationship between age and learning strategy, and assess to what extent this relationship is mediated by individual and contextual factors. Design/methodology/approach Using original survey data on 448 university students enroled in Social Sciences programmes in Belgium, this paper examines the relationship between age and learning strategy and assesses to what extent this relationship is mediated by individual and contextual factors. Findings The results of the multinomial logistic regression show significant differences in learning strategies between both groups of learners. The analyses suggest that mature students are 15.3 percentage points more likely than regular students to adopt a navigator learning strategy. The navigator strategy develops in a non-linear way between the ages 30 and 37. Moreover, only a small part of the learning strategies of mature learners can be explained by mediating factors, with the job involvement playing a particular role. Research limitations/implications This study contributes to the body of knowledge concerning the assessment and classification of learning strategies, including a focus on mediators affecting such strategies. The results are confined to only two higher education (HE) institutions. Furthermore, there may be a non-response bias; it is plausible that we miss among the respondents a particular type of mature students such as those that do not like to participate or those that have dropped out of their master’s programme. By means of larger, random samples in future research we should verify this study’s conclusions. This study did not include motivation as a variable. However, it might also explain why mature and non-mature students’ learning approaches differ. Further research could entangle motivational components in relation to learners’ studying approaches. Practical implications The research results contribute to our understanding to what extent mature and non-mature students’ learning strategies differ and which mediators are prevalent in explaining these differences. It helps to understand how universities can create a supportive academic environment for mature learners. Social implications The authors found significant differences with regard to learning strategies between mature and non-mature university students. Furthermore, having a professional occupation plays a mediating role in explaining learning strategy differences. The study raises the issue of learner-centred HE, with considerations about differentiated designs of learning environments, programmes and support services targeting students of different ages. By integrating the Assessing the Learning Strategies of Adults instrument, instructional designers can identify learning strategies and take appropriate action to accommodate learners. Additionally, awareness of one’s own learning strategy strengthens mature students’ decision making in self-directed learning environments. In that respect, the authors note also that higher pedagogical flexibility, i.e. more varied educational formats, tracks and study arrangements, ensures adult learners’ access, persistence and retention in HE. Originality/value Previous studies suggest that student learning approaches are distinguishable, but did not yet focus on differences between non-mature and mature students. As the authors include graduate students in this study, the focus is on a group which has not been studied previously.
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McCloskey, Donna W., and Karen Leppel. "The Impact of Age on Electronic Commerce Participation." Journal of Electronic Commerce in Organizations 8, no. 1 (January 2010): 41–60. http://dx.doi.org/10.4018/jeco.2010103003.
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This exploratory study examined the impact of age on e-commerce participation and its antecedents: usefulness, ease of information access, and trust. The three age groups considered were the “young” who were 18 to 25, the “mature” who were 50 to 69, and the “elderly” who were 70 and older. Of the three age groups, mature consumers had the highest perception of the usefulness of e-commerce but the lowest perceptions of trust. The elderly perceived less ease of information access and were less likely to participate in electronic commerce than the other age groups. Greater perceptions of usefulness and trust were found to be positively related to participation. In addition, trust had positive impacts on ease of information access and usefulness. While ease of information access had a positive impact on usefulness, it had no direct impact on e-commerce participation.
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Bakanova, Anastasia A., and Irina A. Gorkovaya. "Fear of Death in People of Mature Age with Christian Self-Identification." RUDN Journal of Psychology and Pedagogics 19, no. 3 (December 15, 2022): 550–72. http://dx.doi.org/10.22363/2313-1683-2022-19-3-550-572.
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One of the most important functions of religion is to fill the deficits in the existence of human society, among which an important place is occupied by the awareness of human mortality. According to psychological theories, religion often appears as one of the adaptive strategies that alleviate the fear of death. However, both domestic and foreign empirical studies of the relationship between religiosity and the severity of the fear of death lead to contradictory results, which is associated with the need to take into account a large number of variables in such studies, as well as a non-linear relationship between religion and the fear of death. The authors have made an attempt to study the relationship between Christian self-identification with the conscious components of the fear of death in 118 men and women at different periods of adulthood (40-50 and 51-65 years). The conscious components of the fear of death were assessed on the Personal Death Fear Scale, and attitudes toward death (in particular, the features of experiencing the fear of death and ways to cope with it) were identified in phenomenological interviews. The data were processed using Mann - Whitney U test, correlation analysis, and phenomenological analysis of interviews. The study has shown that Christian religious self-identification in adulthood is positively correlated with the conscious fear of death, and also has age and gender specificity. In general, it is concluded that, in order to explain the relationship between Christian self-identification and the conscious fear of death, it is necessary to analyze the role that the religious worldview plays in people's understanding of their life path. Based on the results of the study, it can be assumed that the leading motive in choosing a Christian worldview is not so much overcoming the fear of personal death as the search for effective ways to cope with difficult life situations. That is why Christian self-identification does not contribute to reducing the fear of personal death, responding to a greater extent to other motives related to the need to “cope with life.” To sum up, the authors show that religiosity is not a universal tool that can unequivocally reduce the fear of death.
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Farkas, Leslie G., Jeffrey C. Posnick, and Tania M. Hreczko. "Anthropometric Growth Study of the Ear." Cleft Palate-Craniofacial Journal 29, no. 4 (July 1992): 324–29. http://dx.doi.org/10.1597/1545-1569_1992_029_0324_agsote_2.3.co_2.
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Age-related growth changes in the ear were analyzed by measuring the width and length of ears in 1,590 North American Caucasians between 1 year and 18 years of age. By 1 year, ear width reached 93.5% of adult size in both sexes, only 2.3 mm less than the mean value at 18 years. In contrast, ear length attained a developmental level of only 76.4% by 1 year in both sexes, requiring an increment five times greater (12.3 mm) to reach the size of the ear at 18 years of age. At 5 years, the developmental level in width (96.7%) was almost equal to that of an adult, while the length reached 86.6% in both sexes, and requires 8.2 additional millimeters to attain adult size. Annual growth increments in ear width are small, interrupted with a few periods of no growth. Ear length in males showed an early rapid growth rate (between 2 and 3 years); subsequent growth was generally limited, interrupted with short periods of no changes. The same growth pattern appeared in females. Ear width reached its mature size in males at 7 years and in females at 6 years; ear length matured in males at 13 years and in females at 12. At the time of maturation, the ear was shorter than at 18 years by a mean of 1.1 to 1.4 mm.
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Revutskaya, O. L. "THE HYDRA EFFECT IN THE DYNAMIC MODEL OF AGE- AND SEX- STRUCTURED EXPLOITED POPULATION." Regional problems 25, no. 3 (2022): 180–82. http://dx.doi.org/10.31433/2618-9593-2022-25-3-180-182.
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On the discrete-time model basis we study the influence of selective harvest on the dynamics of a population with age and sex structures. We consider three harvest strategies, when some part of a younger age class, or mature males, or mature females are removed. We show that the exploited sex and age-specific group equilibrium size (after reproduction) can increase with the increase of harvested individuals proportion; that is, the hydra effect is observed.
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Martínez Silván, Daniel, Amanda Johnson, and Antonio Tramullas. "Skeletal maturity as injury risk factor in adolescent elite track and field athletes." Orthopaedic Journal of Sports Medicine 6, no. 6_suppl3 (June 1, 2018): 2325967118S0003. http://dx.doi.org/10.1177/2325967118s00038.
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Objectives: To establish skeletal age and maturity status in highly trained adolescent track and field athletes and to investigate the relationship between maturation status and different type of injuries. Methods: 72 adolescent track and field athletes from different athletic disciplines (long distance n=15, sprints n=16, jumps n=10, throws n=12, combined events n=9, non-specialized n=10) belonging to an elite sport academy full time between 2013 and 2016 were selected for the study. An electronic medical record for musculoskeletal injuries was designed according to international standards for athletics, and skeletal age and maturity status were determined at the beginning of each season using FELS method, athletes being defined as early matures (EM), late matures (LM) or normo-matures (Norm) according to the difference between chronological and skeletal age. Results: A total number of 195 injuries with an incidence of 7 injuries per 1000 h of training exposure were recorded in 72 athletes (15±1.7y, 169.5±9.9 cm, 61.4±17.9 kg, 215±64 training hours per season). A vast majority of athletes were early mature (EM=78%, Norm= 12%, LM= 10%). 98% of athletes in jumps, sprints, throws and combined events were EM, while a predominance of Norm (40%) and LM (40%) athletes was observed in the long distance group. A larger overuse injury incidence was observed in LM (4.1 inj/1000 h) and Norm (5.1 inj/1000 h) compared to early mature athletes (2.8 inj/1000 h). Apophysitis was the most common overuse injury, being significantly associated to maturation status (LM=4.1 inj/1000 h, Norm= 2.6 inj/1000 h, EM= 0.9 inj/1000 h; p<0.01), and long distance athletes the ones with a larger number of this kind of injuries (61%), and also with a larger training exposure (260 h per season). Conclusion: A predominance of late mature athletes was observed in long distance runners compared to all the other disciplines, and the risk of overuse injuries might increase when late mature athletes are exposed to large amounts of training during adolescence. Adapting training to maturation status and not to chronological age classical categories might reduce injury risk in adolescent track and field athletes.
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Rauw, W. M., P. Luiting, M. W. A. Verstegen, O. Vangen, and P. W. Knap. "Differences in food resource allocation in a long-term selection experiment for litter size in mice 1. Developmental trends in body weight and food intake against time." Animal Science 71, no. 1 (April 2000): 31–38. http://dx.doi.org/10.1017/s1357729800054862.
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AbstractDifferences in the metabolic resource situation between non-reproductive male and female mice of a line selected for high litter size at birth (average of 22 born per litter) and a non-selected control line (average of 10 born per litter) were investigated in two replicates. Brody curves were fitted to individual data on body weight against age and linear regression lines were fitted to individual data on cumulative food intake against age. Mature body weight and mature daily food intake were higher in selected mice than in control mice and higher in males than in females. Selected males matured faster than selected females and control mice. In general, differences in growth and food intake curves between species or lines can mostly be explained by differences in mature size. Therefore, parameters were subsequently scaled by individual estimates of mature body weight. Differences that remain after scaling are a consequence of what have been called specific genetic factors. Scaled mature food intake was higher in selected mice than in control mice and higher in females than in males. Scaled maturation rate was higher in selected mice than in control mice and higher in selected males than in selected females. This shows that in the present study, specific genetic factors have been detected for both body weight and food intake, which suggests that selection for increased litter size has disproportionally changed the resource allocation pattern.
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Moschis, G. P., D. N. Bellenger, P. A. Kennett, and L. E. Aab. "Targeting the Mature Consumer Market." Health Services Management Research 9, no. 2 (May 1996): 90–97. http://dx.doi.org/10.1177/095148489600900203.
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The aging population in the USA makes skill in marketing to the mature consumer increasingly important. The biophysical and psychosocial aging process create a need for specific strategies to address the changes brought on by age. This study attempts to ascertain the degree to which the health service providers recognize some of the needs of the elderly market and the degree to which marketing programs are addressing these needs. A comparison with other industries is also provided. The results indicate that 4 out of 16 strategies directed at the mature market have been used by more than 80% of health care respondents. In addition, there are significant differences between the health care industry and other industries for five of the strategies. All but two of the strategies are thought to be important by more than half of the survey respondents.
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Koinosov, Alexandr Petrovich, and Petr Gennadievich Koinosov. "MORPHOTYPOLOGICAL FEATURES OF MATURE WOMEN SUFFERING FROM PSORIASIS." Scientific medical Bulletin of Ugra 30, no. 4 (2021): 42–49. http://dx.doi.org/10.25017/2306-1367-2021-30-4-42-49.
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The purpose of the study: To establish the morphotypological and age characteristics of mature women with psoriasis. A survey of women with psoriasis aged 21 to 55 years was conducted, consisting of anthropometric methods that allow objectively characterizing belonging to the constitutional type. Anthropometric studies have made it possible to establish age and constitutional diff erences in the main and control groups of women, which aff ect the strength of the physique. The results of the study of the morphotypological status of women with psoriasis revealed the infl uence of individual body structures on the occurrence of the pathology in question. We have obtained new data on morphotypological and constitutional features of healthy mature women and women with psoriasis. The correlation of the frequency of development of this disease with the constitutional type has been established. It is shown that the hypersthenic type of constitution can be considered as a factor leading to an increase in
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Whalen, Kevin G., and Donna L. Parrish. "Effect of maturation on parr growth and smolt recruitment of Atlantic salmon." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 1 (January 1, 1999): 79–86. http://dx.doi.org/10.1139/f98-154.
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We determined the effect of maturation on parr growth and smolt recruitment of Atlantic salmon (Salmo salar) stocked in Vermont tributaries of the Connecticut River. Both among and within tributaries, mature parr ranged between 28 and 52% of the age-1 parr collected and up to 67% of the age-2 parr collected. Percent age-1 parr maturing in October-November was positively related to mean length the preceding June. In October-November, immature age-1 parr were greater in mean length than age-1 mature parr. Data from parr individually tagged in June and recaptured in October showed immature parr exhibited twofold greater individual growth than maturing parr. Smolt recruitment was highly dependent upon state of maturity the preceding fall; fewer individuals that matured as parr recruited to smolt compared with parr remaining immature. Our study shows, over a broad spatial scale, that variation in incidence of maturation is largely explained by parr size among tributaries and river reaches and, furthermore, empirically demonstrates a direct negative effect of maturation on parr growth and recruitment to smolt. Thus, parr maturation is an important consideration for the enhancement and (or) restoration of Atlantic salmon populations via stream stocking programs.
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Dinleyici, M., V. Pérez-Brocal, S. Arslanoglu, O. Aydemir, S. Sevuk Ozumut, N. Tekin, Y. Vandenplas, A. Moya, and E. C. Dinleyici. "Human milk mycobiota composition: relationship with gestational age, delivery mode, and birth weight." Beneficial Microbes 11, no. 2 (March 27, 2020): 151–62. http://dx.doi.org/10.3920/bm2019.0158.
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Intestinal and human milk microbiota studies during infancy have shown variations according to geographical location, delivery mode, gestational age, and mother-related factors during pregnancy. In this study, we performed metagenomic mycobiota analyses of 44 transient and mature human milk among five different groups: mothers of normal spontaneous delivery-term (NS-T), caesarean delivery-term (CS-T), premature (PT), small for gestational age (SGA), and large for gestational age (LGA) infants. Fungi were detected in 80 out of the 88 samples. Regarding the number of observed fungal species, the NS-T group was more homogeneous (less variable) comparing the other groups (P<0.05). In the transient human milk samples, the most abundant species were Saccharomyces cerevisiae (33.3%) and Aspergillus glaucus (27.4%). While A. glaucus (33.7%) was second most abundant species in mature milk, S. cerevisiae disappeared (P<0.01) and Penicillium rubens became the most abundant species (35.5%) (P<0.05). Among the NS-T group, the most abundant species was Malassezia globosa in both transient and mature milk. In contrast, S. cerevisiae was the most abundant species in transient human milk (45.0%) in the CS-T group, but it disappeared in mature milk (P<0.01). In transient milk, M. globosa was only represented 6.0-9.0% of taxa in the PT, SGA, and LGA groups (P<0.05). In transient and mature milk in the PT, SGA and LGA groups, the most abundant species were A. glaucus and P. rubens. In mature milk samples, P. rubens is more abundant in CS-T group, PT group and LGA group, than the NS-T groups (P<0.05 for all). Although fungi constitute only a very small part of the human milk microbiome, we observed some changes that the human milk mycobiota composition varies in caesarean delivery, premature, SGA and LGA groups, comparing the normal spontaneous delivery, as well as differences between transient and mature human milk.
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Zaine, Leandro, Chayanne Ferreira, Marcia de O. S. Gomes, Mariana Monti, Leticia Tortola, Ricardo S. Vasconcellos, and Aulus C. Carciofi. "Faecal IgA concentration is influenced by age in dogs." British Journal of Nutrition 106, S1 (October 12, 2011): S183—S186. http://dx.doi.org/10.1017/s0007114511000559.
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Data comparing age-related alterations in faecal IgA concentrations of dogs are not available in the literature. The present study aimed to compare the faecal concentrations of IgA in puppies, mature and senior dogs. A total of twenty-four beagle dogs were used, including eight puppies (5 months old, four females and four males), eight mature (4·6 years old, eight males) and eight senior dogs (10·6 years old, three males and five females). Fresh faecal samples were collected from each dog for three consecutive days and pooled by animal. After saline extraction, IgA content was measured by ELISA. Data were analysed by one-way ANOVA, and means were compared with Tukey's test (P < 0·05). Results showed that puppies have lower faecal IgA concentrations than mature dogs (P < 0·05); senior animals presented intermediary results. The reduced faecal IgA concentration in puppies is consistent with the reduced serum and salivary IgA concentrations reported previously, suggesting a reduced mucosal immunity in this age group. Although some studies have found an increased serum IgA concentration in older dogs, this may differ from the intestinal secretion of IgA, which appears to be lower in some senior animals (four of the eight dogs studied).
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Donahue, H. J., Z. Zhou, Z. Li, and L. K. McCauley. "Age-related decreases in stimulatory G protein-coupled adenylate cyclase activity in osteoblastic cells." American Journal of Physiology-Endocrinology and Metabolism 273, no. 4 (October 1, 1997): E776—E781. http://dx.doi.org/10.1152/ajpendo.1997.273.4.e776.
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In this study we examined parathyroid hormone (PTH)-, forskolin (FSK)-, and cholera toxin (CTX)-stimulated adenosine 3′,5′-cyclic monophosphate (cAMP) accumulation in rat osteoblastic cells (ROB) isolated from young (4 mo), mature (12 mo), and old (24–28 mo) male rats. Exposure to PTH increased cAMP accumulation in a concentration-dependent manner in all ROB cells examined. However, the maximum response in ROB from young rats was threefold greater than the maximum response in those from mature and old rats. Exposure to FSK also stimulated cAMP accumulation in a concentration-dependent manner, but there were no significant differences in responsiveness among ROB isolated from young, mature, and old rats. Exposure to CTX resulted in a dramatic concentration-dependent increase in cAMP in ROB from young rats but only a modest increase in ROB from mature and old rats. PTH binding kinetics were similar in ROB from rats in each age group. These data suggest an age-related defect in stimulatory G protein coupling to adenylate cyclase, which contributes to decreased osteoblastic responsiveness to PTH.
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Blokhina, Nadezhda I., Olesya V. Bondarenko, and Sergey V. Osipov. "Age Variation of Wood Anatomical Characteristics in Larix cajanderi Tree." Wood Research Journal 2, no. 1 (August 31, 2017): 1–12. http://dx.doi.org/10.51850/wrj.2011.2.1.1-12.
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The paper is the first results of the study of age variation of wood anatomy in Larix cajanderi Mayr (Pinaceae). The anatomical study was made from one L. cajanderi tree grown in the optimal habitat for L. cajanderi within areal of this species. Age variability of anatomical characteristics in the direction from pith to bark and along the height of stem is described in detail. Mature wood in L. cajanderi is formed in the base of stem and at breast height in the growth rings numbers 31~40 inclusively, and in the middle of stem in the growth rings numbers 41~50 inclusively. Characteristic features of mature stem wood were not found near the top of tree. Maximal parameters of anatomical characters usually occur in the base of stem. Age variation of wood anatomical characteristics in L. cajanderi tree was obtained for the first time.
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Gavrichenko, Oksana V., and Evgeniya А. Bubnovskaya. "PERFECTIONISM AND ANXIETY AS A PHENOMENON OF SELF-ATTITUDE IN YOUNG AND MATURE AGE." RSUH/RGGU Bulletin. Series Psychology. Pedagogics. Education, no. 4 (2021): 65–81. http://dx.doi.org/10.28995/2073-6398-2021-4-65-81.
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The article examines the psychological aspects of the manifestation of anxiety and perfectionism as a phenomenon of selfattitude in the period of youth and maturity in a situation of transitivity associated with constant changes in social processes, value systems and the transformation of the everyday space of a modern person. The paper analyzes the differences in the manifestation of the level of anxiety and the level of perfectionism in people at a young and mature age; the influence of situational and personal anxiety on self-attitude and the level of specific components of self-attitude is considered; the relationship between the level of socially prescribed perfectionism and the level of self-attitude of the individual is studied. The results of the study demonstrate that the young participants experience a significantly higher level of situational anxiety at their age, in contrast to people of mature age. At the same time, anxiety, as a personality trait, is generally on the same level, with insignificant growth in the group among young people. The study did not reveal any differences in the level of self-oriented perfectionism in the two age groups. However, according to the scale of perfectionism oriented towards others, there are differences between young and mature respondents. The study records that the level of situational anxiety is significantly lower in people of mature age. At the same time, the respondents of this age group are characterized by a higher level of self-esteem, self-confidence, self-acceptance, self-consistency, as well as self-understanding than the participants at a young age.
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Sulaiman, Sulaiman. "Domination of Tradition in Under Age Marriage." Analisa 19, no. 1 (June 7, 2012): 15. http://dx.doi.org/10.18784/analisa.v19i1.152.
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<p><em>The focus of this research was the phenomenon of early marriage which was domi- nated by cultural traditions. It was a qualitative research that used interview, obser- vation and document reviews to collect the data. The result of the study was expected to provide people enough information and materials on the picture of early marriage. The findings showed some determining factors in the phenomenon: culture, textual understanding of religion, and economic motives. Although the phenomenon of early marriage was like this, people actually perceive that the ideal marriage was a mar- riage which is conducted after reaching the age mature enough to be able to live inde- pendently. The practice of such marriage should get special attention because there are many social problems that are related direcly to the mature age of marriage, such as: mortality, poverty, and the low quality of education. Therefore, the implementa- tion of the marriage must be in accordance with the laws and regulations.</em></p>
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Li, Zuwang, Zhi Liu, Guoqiang Gao, Xinlei Yang, and Jiacun Gu. "Shift from Acquisitive to Conservative Root Resource Acquisition Strategy Associated with Increasing Tree Age: A Case Study of Fraxinus mandshurica." Forests 12, no. 12 (December 17, 2021): 1797. http://dx.doi.org/10.3390/f12121797.
Full textAbstract:
Tree age has an important effect on the form and function of fine roots. Previous studies have focused on the variations in root morphological and chemical traits among tree ages, while less attention has been given to the physiological traits, impeding a full understanding of the relationship between root resource acquisition strategy and tree age. Here, we measured root morphological (diameter, specific root length, specific root area and tissue density), chemical (nitrogen concentration) and physiological (respiration and exudation rate) traits of young, middle-aged and mature trees of Fraxinus mandshurica in a temperate secondary forest in northeastern China. Our overall aim was to determine how root traits and related resource acquisition strategy change with tree age. The results showed that from young to mature trees, root diameter gradually increased, but specific root length, specific root area, root nitrogen concentration, respiration and exudation rates all decreased, and the significant differences were mainly found between young and mature trees. Pearson’s correlation analysis revealed that the relationships of root respiration and exudation rates to root morphological and chemical traits depended on tree age and the specific traits examined, but these correlations were all significant except for root tissue density when the data were pooled across all tree age classes. Principal component analysis (PCA) showed that the conservative traits represented by root diameter, and the acquisitive traits such as root respiration and exudation rates and related morphological and chemical traits, occupied two ends of the first axis, respectively, while root tissue density occupied one end of the second axis, partially confirming the conceptual framework of “root economics space”. Standardized major axis (SMA) analysis of root exudation and respiration rates showed that young trees allocated more root carbon flux to the formation of root exudation, compared to middle-aged and mature trees. Our findings suggest that root resource acquisition strategy in F. mandshurica appears to shift from an absorptive to conservative strategy associated with increasing tree age, which may have substantial consequences for individual growth and interspecific competition, as well as belowground carbon allocation in ecosystems.
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Kaneuchi, Yoichi, Kenichi Otoshi, Michiyuki Hakozaki, Miho Sekiguchi, Kazuyuki Watanabe, Takahiro Igari, and Shinichi Konno. "Bony Maturity of the Tibial Tuberosity With Regard to Age and Sex and Its Relationship to Pathogenesis of Osgood-Schlatter Disease: An Ultrasonographic Study." Orthopaedic Journal of Sports Medicine 6, no. 1 (January 1, 2018): 232596711774918. http://dx.doi.org/10.1177/2325967117749184.
Full textAbstract:
Background: Although tensile force on an immature tibial tuberosity is considered the main cause of Osgood-Schlatter disease (OSD), the relationship between bony maturity and the pathogenesis of OSD remains obscure. Purpose: To survey the bone maturation process of the tibial tuberosity by age and sex and clarify its relationship to OSD. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 731 Japanese basketball players aged 6 to 14 years were enrolled in this study. Ultrasonographic examination was performed in all participants (1462 knees) to evaluate the bony maturity of the tibial tuberosity by use of the Ehrenborg classification. The age- and sex-specific prevalence of each stage was investigated, and the prevalence of symptomatic OSD and its relationship with bony maturity were also assessed. Results: The process of bone maturation occurred 1 to 2 years earlier in female participants compared with male participants. Among female participants, 59.2% were already at the epiphyseal stage (stage E) by 10 years of age, and 47.4% were skeletally mature by 14 years. Among male participants, conversely, only 8.0% were at stage E by 10 years of age, and only 13.8% were skeletally mature by 14 years. The overall prevalence of symptomatic OSD was 6.8% (males, 6.4%; females, 7.2%), and the onset was 1 year earlier in the female participants. The prevalence of symptomatic OSD tended to increase with age and bony maturity, significantly increasing from the cartilaginous stage (stage C) to the apophyseal stage (stage A) (odds ratio, 9.48) and from stage A to stage E (odds ratio, 2.22). Conclusion: The tibial tuberosity matures earlier in female participants. The risk of OSD is greater in stage A than stage C and in stage E than stage A. The risk of OSD increases with age in males but not in females.
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Hakman, Anna, Svitlana Duditska, and Svitlana Pervukhina. "Peculiarities of recreative types of gymnastics for women of mature age in the conditions of the covid-19 pandemic." Scientific Journal of National Pedagogical Dragomanov University. Series 15. Scientific and pedagogical problems of physical culture (physical culture and sports), no. 9(140) (September 30, 2021): 28–31. http://dx.doi.org/10.31392/npu-nc.series15.2021.9(140).07.
Full textAbstract:
As a result of the analysis of the scientific-methodical literature of the problem under study of the physical development of women 25-45 years old, we can state that the numerical aspects of the given approach were studied or were in sight of researchers. At the same time, it should be noted that the attention of professionals in the field of physical culture and sports to the use of innovative means of recreative types of gymnastics in the practice of leisure activities for women of mature age is observed. Goal of research – to substantiate the characteristics and specific peculiarities of recreative types of gymnastics of mature women in the conditions of pandemic COVID-19. A set of complementary theoretical research methods was used to achieve the goal of research: analysis and generalization of scientific and methodological literature on the problem of the peculiarities of the implementation of recreative types of gymnastics for women of mature age; synthesis and deduction. Research findings. The study focused on the feasibility of recreative types of gymnastics during the COVID-19 pandemic for women of mature age. Attention is focused on rhythmic gymnastics and its various forms: fitness, aerobics, shaping and circuit training. It is pointed out that an important criterion of this type of recreative gymnastics is the tempo, rhythm, musical volume, sound volume and other means of musical expression that directly affect the improvement of sensory and cognitive functions of women of mature age. It is stated that rhythmic gymnastics allows to adjust the process of formation of physical and mental health of women of mature age. The degrees of load used in circuit training of a recreative nature in a pandemic COVID-19 are described. Conclusions. In the conditions of the COVID-19 pandemic, the most effective types of recreative gymnastics are fitness, aerobics, shaping with the use of circuit training methods. Health load on the body of women of mature age is selected taking into consideration their individual profile, level of physical development and functional readiness. This approach preserves the potential of the body's functional systems and the psychological health of women of mature age.