scholarly journals ONTOGENESIS AND AGE STRUCTURE OF THE PULSATILLA MULTIFIDA MILL POPULATIONS IN THE CONDITIONS OF NORTHERN KAZAKHSTAN

THE BULLETIN ◽  
2020 ◽  
Vol 6 (388) ◽  
pp. 46-53
Author(s):  
Sultangazina G.J., ◽  
◽  
Kuprijanov А.N., ◽  
Kuprijanov О.А., ◽  
Beyshov R.S., ◽  
...  
Keyword(s):  
Old Age ◽  
Age Structure ◽  
Field Research ◽  
Juvenile Stage ◽  
Natural Conditions ◽  
Mass Flowering ◽  
Age Related ◽  
Study Results ◽  
Rocky Habitats ◽  
Generative Stage

The article provides the study results on the age-related stages of Pulsatilla multifida Mill. The materials have been gathered in the course of field research taking into account the literary data. The studies were carried out in the Pavlodar and Akmola regions during the season of mass flowering and seeds ripening (2018-2019). A rosette shoot is formed on the stage of seedlings out of 3-4 leaves of different complexity. On the juvenile stage the rosette shoot is formed out of 4-5(6) leaves. The leaves are tripartite, dissected into large lobes and in their turn are cut into prongs. The root system is represented by a stem-root and many roots of the second order. Immature individuals undergo the formation of an elongated rhizome. Leaf-blades are tripartite with deeply dissected lobes. 1-3 rosette shoots grow from resumption buds. The calendar age of an immature plant is 1-2 years. On the virginal stage, there is an increase of resumption buds and rosette modules, the formation of a powerful rhizome with numerous resumption buds on it. Leaves acquire a specificity: the number of prongs on the leaves becomes narrow, middle leaves develop a petiole of different lengths. Young generative plants have 1-3 peduncles and 1-3 rosette shoots. On average generative stage, the rhizome forms a many-headed caudex with numerous rosette shoots. In old age the number of rosette shoots decreases, the peduncles remain underdeveloped and do not start blooming. The leaves are cut into very narrow lobes with a large number of prongs, while the length of the petiole at the central lobe becomes minimal. In subsenile plants, there is a maceration of rhizomes to a greater depth with the formation of vegetative rosettes on separate parcels and they are represented by a system of dying rhizomes, with single vegetative sockets. The coenopopulations of P. multifida and P. aggr. patens are found in rocky habitats, except CP-1 (a glade between the rocks) where P. multifida grows on a dry meadow among steppe shrubs. All the studied populations are generative, the density of species is high enough to ensure the normal existence of the species in natural conditions.

scholarly journals ONTOGENESIS AND AGE STRUCTURE OF ADONIS VERNALIS L. POPULATIONS IN THE CONDITIONS OF NORTHERN KAZAKHSTAN

THE BULLETIN ◽  
2020 ◽  
Vol 5 (387) ◽  
pp. 56-64
Author(s):  
G.J. Sultangazina ◽  
◽  
А.N. Kuprijanov ◽  
О.А. Kuprijanov ◽  
R.S. Beyshov ◽  
...  
Keyword(s):  
Age Structure ◽  
Field Research ◽  
Forest Edge ◽  
Forest Steppe ◽  
Forest Edges ◽  
Recovery Index ◽  
Northern Kazakhstan ◽  
Age Related ◽  
Study Results ◽  
Current Article

The current article presents study results made on the coenoflora of Adonis vernalis L. in Northern Kazakhstan. The materials have been gathered in the course of field research taking into account the literary data. Ontogenesis and age structure of the coenopopulations are provided on the basis of detailed-route studies. The study of age-related stages was carried out on the territory of Northern Kazakhstan (Akmola and North Kazakhstan regions) in 2018-2019. A. vernalis is a short-stem grassy polycarpic plant, it is represented in Northern Kazakhstan by the populations of dry meadows (Kokshetau Upland) and real meadows (the forest-steppe of North Kazakhstan region). Ontogenesis of A. vernalis has three periods and 7 age stages. Plants have low seed productivity. Seeds have a long endogenous peace related to the underdevelopment of a seed germ. A characteristic feature is the presence of a long pregenerative period in plants of the "steppe" type coenopopulations and its reduction in the "meadow" type coenopopulations. There have been studied thirteen coenopopulations of A. vernalis located in Akmola and North Kazakhstan regions. Coenopopulations of A. vernalis are bound to four main habitats: forest edges, meadow steppes, meadows, artificial plantations. By age, young populations are formed on forest edges, and according to the "delta - omega" classification, there are mature coenopopulations. Mature coenopopulations are mostly formed in meadow steppes, but according to the "delta - omega" classification, all coenopopulations are aging. On meadows, there are many young coenopopulations, but according to the "delta - omega" classification, they are all mature. In artificial plantings, the majority of coenopopulations are aging, but according to the "delta - omega" classification, they are all mature. Thus, changes in habitual living conditions lead to the aging of A. vernalis coenopopulations. By density (pcs/100 m2) all populations are divided into three groups: high, medium, low. All forest edge coenopopulations have a high density, in meadow steppes, the density is average, on meadows and in artificial plantings it is low. The recovery index in most coenopopulations is less than one which indicates a low recovery in A. vernalis populations. The range of age stages shows that in most coenopopulations they are normal, the exception is CP-5 (among artificial plantings) which indicates an old stage of the population and possibly its soon elimination.

IC-P-100: Cross-Sectional and Longitudinal Study of Age-Related Shrinkage in the Superior,Middle and Inferior Frontal Gyrus in Old and Very Old Age

2010 ◽  
Vol 6 ◽  
pp. S40-S40
Author(s):  
Olof E. Lindberg ◽  
Carl-Henrik Ehrenkrona ◽  
Linnea Engström ◽  
Leif A. Svensson ◽  
Eva Öhrndahl ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Old Age ◽  
Inferior Frontal Gyrus ◽  
Cross Sectional ◽  
Very Old ◽  
Age Related ◽  
Very Old Age

Ambiguity in public sector performance measurement: a systematic literature review

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Chiara Oppi ◽  
Cristina Campanale ◽  
Lino Cinquini
Keyword(s):  
Public Sector ◽  
Literature Review ◽  
Performance Measurement ◽  
Systematic Literature Review ◽  
Field Research ◽  
Future Research ◽  
Academic Journal ◽  
Content Type ◽  
The Public ◽  
Study Results

PurposeThis paper presents a systematic literature review aiming at analysing how research has addressed performance measurement systems’ (PMSs) ambiguities in the public sector. This paper embraces the ambiguity perspective that PMSs in public sector coexist with and cope with existing ambiguities.Design/methodology/approachThe authors conducted a literature review in Scopus and ScienceDirect, considering articles published since 1985, and the authors selected articles published in the journals included in the Association of Business Schools' Academic Journal Guide (Chartered ABS, 2018). Of the 1,278 abstracts that matched the study’s search criteria, the authors selected 131 articles for full reading and 37 articles for the final discussion.FindingsThe study's key findings concern the elements of ambiguity in PMSs discussed in the literature. The study’s results suggest that ambiguity is still a relevant problem in performance measurement, as a problem that is impossible to be solved and therefore needs to be better understood by researchers and public managers. The analysis allows us to summarize the antecedents and consequences of ambiguity in the public sector.Research limitations/implicationsThe key findings of the study concern the main sources of ambiguity in PMSs discussed in the literature, their antecedents and their consequences. The study results suggest that ambiguity exists in performance measurement and that is an issue to be handled with various strategies that can be implemented by managers and employees.Practical implicationsManagers and researchers may benefit from this research as it may represent a guideline to understand ambiguities in their organizations or in field research. Researchers may also benefit from a summary list of the key issues that have been analysed in the empirical cases provided by this research. Social implicationsThis research may provide insights to limit ambiguity and thus contribute to improve performance measurement in the public sector.Originality/valueThis research presents a comprehensive review on the topic. It provides insight that suggests what future research should attend to in helping to interpret ambiguity, considering also what should be done to influence ambiguity.

Morphological differences of the fallopian tube ampoule in young and old age

2022 ◽  
pp. 857-862
Author(s):  
И.А. Баландина ◽  
А.М. Некрасова ◽  
А.А. Баландин
Keyword(s):  
Old Age ◽  
Cross Section ◽  
Fallopian Tube ◽  
Morphological Study ◽  
Morphological Variability ◽  
Young Age ◽  
Muscle Membrane ◽  
Fallopian Tubes ◽  
Age Related ◽  
Morphological Differences

Работа основана на морфологическом исследовании ампул маточных труб 130 рожавших женщин молодого и старческого возраста. Применены макрометрический, гистологический, иммуногистохимический и микрометрический методы исследования. Выявлены закономерности возрастной морфологической изменчивости ампулы маточной трубы, проявляющиеся в уменьшении параметров их длины, а также наружных диаметров в середине ампулы и в местах перехода перешейка в ампулу и ампулы в воронку от молодого возраста к старческому возрасту. Гистоархитектоника ампул маточных труб у женщин в старческом возрасте характеризуется уплощением эпителия слизистой оболочки, образующей обилие близлежащих утолщенных складок, формирующих неравномерное сужение просвета ампулы. Определяется истончение мышечной оболочки с разрастанием вместо нее соединительной ткани и скоплением адипоцитов в подсерозной основе. В старческом возрасте отмечается более выраженная экспрессия виментина, прослеживающаяся не только в эндотелии и субэндотелиальном слое кровеносных сосудов, включая капилляры, но и в отдельных фибробластах. Установлено, что особенности микрометрических характеристик ампул маточных труб заключаются в уменьшении внутреннего периметра эпителиальной выстилки и площади просвета, наряду с увеличением площади их стенки при срединном сечении, в старческом возрасте в сравнении с молодым. The work is based on a morphological study of ampoules of the fallopian tubes of 130 young and senile women who gave birth. Macrometric, histological, immunohistochemical and micrometric methods of investigation were applied. The regularities of age-related morphological variability of the fallopian tube ampoule are revealed, which are manifested in a decrease in the parameters of their length, as well as external diameters in the middle of the ampoule and at the places of transition of the isthmus into the ampoule and ampoule into the funnel from young age to old age. Histoarchitectonics of ampoules of the fallopian tubes in women in old age is characterized by flattening of the epithelium of the mucous membrane, which forms an abundance of nearby thickened folds that form an uneven narrowing of the lumen of the ampoule. The thinning of the muscle membrane is determined with the growth of connective tissue instead of it and the accumulation of adipocytes in the subserose base. In old age, there is a more pronounced expression of vimentin, which can be traced not only in the endothelium and subendothelial layer of blood vessels, including capillaries, but also in individual fibroblasts. It was found that the features of the micrometric characteristics of the fallopian tube ampoules consist in a decrease in the inner perimeter of the epithelial lining and the lumen area, along with an increase in the area of their wall at the median cross-section in old age compared with young age.

scholarly journals Correlation between Degenerative Changes and Osteoporosis in Lumbar Spine of Elderly Women in Dhaka city, Bangladesh

2018 ◽  
Vol 10 (1) ◽  
pp. 18-21 ◽  
Author(s):  
Sultana Amena Ferdoucy ◽  
Md Anower Hussain Mian ◽  
Nasrin Akhter ◽  
Md Shafiqul Alam ◽  
MA Sadek
Keyword(s):  
Lumbar Spine ◽  
Elderly Women ◽  
Significant Negative Correlation ◽  
Cross Sectional Study ◽  
Degenerative Changes ◽  
Mineral Density ◽  
Cross Sectional ◽  
Age Related ◽  
Younger Age ◽  
Study Results

Aims: Degenerative joint diseases and decreased bone mass i.e.  osteoporosis are two common age related skeletal disorders  responsible for pain and disability. Bangladesh has a high incidence  of osteoporosis and the incidence particularly in women, occurs  among a relatively younger age group than in the developed world.  However little is known about the correlation between degenerative  changes and osteoporosis in lumbar spine of elderly women. The  purpose of this study was to clarify this relationship in elderly women  of Dhaka, Bangladesh.  Methods: A cross-sectional study was conducted at the department  of radiology and imaging of Bangladesh institute of research and  rehabilitation in diabetes, endocrine and metabolic disorders  (BIRDEM), Dhaka during the period of 1st January, 2009 to 31st  December, 2010. DEXA scan of spine and BMD measurement were  done at a renowned private hospital of Dhaka. Total 63 elderly female  aged between 50-75 years were randomly selected for this study.  Results: An inverse relationship between osteoporosis and  spondylosis in postmenopausal women as evaluated by bone  mineral density and semiquantitative scoring of spinal degeneration  was observed. A significant negative correlation (r=-0.53:p<0.05)  was found between T-score and grade. DOI: http://dx.doi.org/10.3329/cdcj.v10i1.13740 City Dent. Coll. J Volume-10, Number-1, January-2013

Concrete and Formal Operational thought Processes in Young Adulthood and Old Age

1976 ◽  
Vol 7 (3) ◽  
pp. 237-245 ◽  
Author(s):  
Vivian Clayton ◽  
Willis F. Overton
Keyword(s):  
Old Age ◽  
Living Arrangements ◽  
Fluid Intelligence ◽  
Age Groups ◽  
Thought Processes ◽  
Crystallized Intelligence ◽  
Age Related ◽  
Concrete Operational ◽  
Fluid And Crystallized Intelligence

A study was conducted to examine the role of concrete and formal operations in a young and old population. In addition, the present study explored the relation between operational thought and Cattell's concept of fluid and crystallized intelligence, as well as the role of differential living arrangements in maintaining operational thought. Eighty females from three age groups (18–20 years, 60–70 years and 70–80 years of age) were tested on a series of Piagetian tasks and indices of fluid and crystallized intelligence. The findings supported the notion that age-related performance differences occur in the area of formal operational thought prior to the time they occur in concrete operational thought. Except for the young sample, the operational tasks were found to be unrelated to fluid intelligence at the age levels represented in this study. Living independently as opposed to living in an old age home did not appear to be a significant factor in maintaining operational thought. Discussion focused on the necessity of identifying those factors which influence the developmental course of formal operational thought across the life span.

Reproductive senescence in free-ranging North American elk Cervus elaphus Cervidae

Mammalia ◽  
2019 ◽  
Vol 83 (6) ◽  
pp. 593-600 ◽  
Author(s):  
Louis C. Bender ◽  
Jessica R. Piasecke
Keyword(s):  
Age Structure ◽  
Cervus Elaphus ◽  
North American ◽  
Reproductive Senescence ◽  
Female Age ◽  
North American Elk ◽  
Age Related ◽  
Consistent Manner ◽  
Multiple Species ◽  
Free Ranging

Abstract Successful production of calves is necessary for growth of North American elk (Cervus elaphus Linnaeus 1758) populations, but few studies have evaluated age-related effects on both the conception and survival of a calf to weaning in multiple free-ranging populations. Conception and survival of calves to weaning were both affected by maternal age, with old (age 9 and older) females showing reproductive senescence as compared to prime-aged (ages 2–8) females despite achieving similar or greater size and condition. Reproductive senescence in our free-ranging populations ultimately resulted in old females weaning fewer calves (0.42 calves/female) than did prime-aged females (0.64 calves/female). Other factors, especially maternal size, also influenced conception and survival to weaning, and these interacted with age in a consistent manner, i.e. larger females or females in better condition were more likely to conceive and successfully wean calves within each age class. Female age structure receives less consideration in ungulate management than does male age structure, despite demonstrated impacts on population productivity of multiple species because of reproductive senescence. Because of the large proportion of individuals in senesced age classes in elk populations, low productivity in populations may simply reflect female age structure, rather than other frequently hypothesized factors.

scholarly journals Differences in the Motor Coordination Abilities Among Adolescent Gymnasts, Swimmers, and Ice Hockey Players

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Timo Jaakkola ◽  
Anthony Watt ◽  
Sami Kalaja
Keyword(s):  
Motor Coordination ◽  
Ice Hockey ◽  
Specific Training ◽  
Young Athletes ◽  
Test Protocol ◽  
Male Adolescents ◽  
Age Related ◽  
Study Results ◽  
Hockey Players ◽  
Better Than

AbstractPurpose. Motor coordination is proposed to be a relatively stable age-related construct, unlikely to be influenced by aligned experiential factors such as intensive sport-specific training. The purpose of the study is to investigate if there are differences in motor coordination abilities among young artistic gymnasts, swimmers, and ice hockey players.Methods. The participants of the study were 508 female and 258 male adolescents (age, M = 12.80, SD = 1.10) comprising artistic gymnasts (n = 463), swimmers (n = 70), and ice hockey players (n = 233). The KTK-test protocol was used to analyse their gross motor coordination abilities.Results. The results of the study demonstrated that gymnasts scored better than ice hockey players and swimmers in the test of walking backwards along a beam, and better than ice hockey players in total motor coordination, hopping over an obstacle, and the test of moving sideways on wooden boards. However, ice hockey players scored higher than swimmers and gymnasts in the test of jumping from side to side. Subsequently, swimmers obtained better results in the test of moving sideways on wooden boards as compared with ice hockey players.Conclusions. The study results indicate that intensive sport-specific training may extend young athletes′ motor coordination characteristics in the ability areas representative of the sport in which they engage.

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