scholarly journals An Age-Dependent Sequence of Physiological Processes Defines Developmental Root Senescence

2019 ◽  
Vol 181 (3) ◽  
pp. 993-1007 ◽  
Author(s):  
Zhaojun Liu ◽  
Chakravarthy B.N. Marella ◽  
Anja Hartmann ◽  
Mohammad R. Hajirezaei ◽  
Nicolaus von Wirén
Keyword(s):  
Root Senescence ◽  
Physiological Processes ◽  
Dependent Sequence ◽  
Age Dependent

scholarly journals Anthropometric Features of Ethnic Kyrgyz of Different Age Groups

2019 ◽  
Vol 7 (4) ◽  
pp. 56-60 ◽  
Author(s):  
K. Sh. Sakibaev ◽  
N. T. Alexeeva ◽  
D. B. Nikityuk ◽  
N. M. Tashmatova ◽  
S. V. Klochkova
Keyword(s):  
Practical Importance ◽  
Age Groups ◽  
Relative Number ◽  
The Body ◽  
Morphometric Data ◽  
Microsoft Excel ◽  
Physiological Processes ◽  
Anthropometric Features ◽  
Age Dependent ◽  
Kyrgyz Population

The purposeof this study was to develop data about growth-weighted indexes of men of youthful and Mature age, ethnic Kyrgyz.Material and methods. 955 men of youthful and Mature age, ethnic Kyrgyz living in Osh and its vicinities, practically healthy were examined. The method of complex anthropometry included estimation of 21 parameters necessary for somatotyping. The length and weight of the body were determined. Morphometric data processing was carried out with the help of statistical programs Microsoft Excel and STATISTICA 6.0 package. The differences between the two compared values were considered reliable according to the student's criterion at p < 0.05.Results. Somatotyping of men showed predominance of abdominal somatotype, with a minimum percentage of breast somatotype. The analysis of growth-weight indicators in different somatotypes showed that regardless of the somatotype, the length of the body increases slightly during the transition from adolescence to the 1st period of adulthood, which is explained by the continuation of growth processes. A slight decrease in body length in the 2nd period of adulthood is due to natural physiological processes and is a proven age-dependent fact.Conclusion. In the result of the study shows the distribution in the relative number of different somatotypes of men in the Kyrgyz population; shows the age and somatotypological characteristics of height and body mass that has significant scientific and practical importance.

Effects of Hyperoxia on Lung Utrastructure

1970 ◽  
Vol 28 ◽  
pp. 26-27
Author(s):  
Gladys Harrison
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Light Microscopy ◽  
Oxygen Effects ◽  
Age Dependent ◽  
The Central Nervous System ◽  
The Subject ◽  
Space Age ◽  
Alveolar Septa ◽  
Extensive Damage

With the advent of the space age and the need to determine the requirements for a space cabin atmosphere, oxygen effects came into increased importance, even though these effects have been the subject of continuous research for many years. In fact, Priestly initiated oxygen research when in 1775 he published his results of isolating oxygen and described the effects of breathing it on himself and two mice, the only creatures to have had the “privilege” of breathing this “pure air”.Early studies had demonstrated the central nervous system effects at pressures above one atmosphere. Light microscopy revealed extensive damage to the lungs at one atmosphere. These changes which included perivascular and peribronchial edema, focal hemorrhage, rupture of the alveolar septa, and widespread edema, resulted in death of the animal in less than one week. The severity of the symptoms differed between species and was age dependent, with young animals being more resistant.

Localization of Adenosine Triphosphatase Activity in the Phleom of Nicotiana Tabacum

1972 ◽  
Vol 30 ◽  
pp. 230-231
Author(s):  
James Cronshaw ◽  
Jamison E. Gilder
Keyword(s):  
Plasma Membrane ◽  
Atpase Activity ◽  
Adenosine Triphosphatase ◽  
Higher Plants ◽  
High Surface ◽  
Root Tip ◽  
Animal Cells ◽  
Physiological Processes ◽  
Tip Cells ◽  
Atpase Localization

Adenosine triphosphatase (ATPase) activity has been shown to be associated with numerous physiological processes in both plants and animal cells. Biochemical studies have shown that in higher plants ATPase activity is high in cell wall preparations and is associated with the plasma membrane, nuclei, mitochondria, chloroplasts and lysosomes. However, there have been only a few ATPase localization studies of higher plants at the electron microscope level. Poux (1967) demonstrated ATPase activity associated with most cellular organelles in the protoderm cells of Cucumis roots. Hall (1971) has demonstrated ATPase activity in root tip cells of Zea mays. There was high surface activity largely associated with the plasma membrane and plasmodesmata. ATPase activity was also demonstrated in mitochondria, dictyosomes, endoplasmic reticulum and plastids.

A Scanning Electron Microscopic Study of Pro-Vascular Cellular Morphology in Chaetophora Incressata

1985 ◽  
Vol 43 ◽  
pp. 638-639
Author(s):  
A. E. Hotchkiss ◽  
A. T. Hotchkiss ◽  
R. P. Apkarian
Keyword(s):  
Green Algae ◽  
Vascular Plants ◽  
Vascular System ◽  
Higher Plants ◽  
Wall Structure ◽  
Electron Microscopic ◽  
Physiological Processes ◽  
Scanning Electron Microscopic Study ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Multicellular green algae may be an ancestral form of the vascular plants. These algae exhibit cell wall structure, chlorophyll pigmentation, and physiological processes similar to those of higher plants. The presence of a vascular system which provides water, minerals, and nutrients to remote tissues in higher plants was believed unnecessary for the algae. Among the green algae, the Chaetophorales are complex highly branched forms that might require some means of nutrient transport. The Chaetophorales do possess apical meristematic groups of cells that have growth orientations suggestive of stem and root positions. Branches of Chaetophora incressata were examined by the scanning electron microscope (SEM) for ultrastructural evidence of pro-vascular transport.

1248: Impact of Surgical Treatment of Renal Carcinoma on Renal Function and Blood Pressure: A Race- and Age-Dependent Association

2007 ◽  
Vol 177 (4S) ◽  
pp. 411-412
Author(s):  
Javier Miller ◽  
Angela Smith ◽  
Kris Gunn ◽  
Erik Kouba ◽  
Eric M. Wallen ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Function ◽  
Surgical Treatment ◽  
Renal Carcinoma ◽  
Age Dependent

Age-Dependent Opioid Escalation in Chronic Pain Patients

2006 ◽  
Vol 2006 ◽  
pp. 233
Author(s):  
S.E. Abram
Keyword(s):  
Chronic Pain ◽  
Chronic Pain Patients ◽  
Age Dependent ◽  
Pain Patients

Age-Dependent Closure of Bony Defects after Frontal Orbital Advancement

2008 ◽  
Vol 2008 ◽  
pp. 18-19
Author(s):  
S.P. Bartlett
Keyword(s):  
Age Dependent

Ambulatory Assessment

2009 ◽  
Vol 14 (2) ◽  
pp. 109-119 ◽  
Author(s):  
Ulrich W. Ebner-Priemer ◽  
Timothy J. Trull
Keyword(s):  
Real Time ◽  
Clinical Psychology ◽  
Real Life ◽  
Ambulatory Assessment ◽  
Computer Assisted ◽  
Affective Valence ◽  
Time Data ◽  
Physiological Processes ◽  
Context Specific ◽  
Questionnaire Studies

Convergent experimental data, autobiographical studies, and investigations on daily life have all demonstrated that gathering information retrospectively is a highly dubious methodology. Retrospection is subject to multiple systematic distortions (i.e., affective valence effect, mood congruent memory effect, duration neglect; peak end rule) as it is based on (often biased) storage and recollection of memories of the original experience or the behavior that are of interest. The method of choice to circumvent these biases is the use of electronic diaries to collect self-reported symptoms, behaviors, or physiological processes in real time. Different terms have been used for this kind of methodology: ambulatory assessment, ecological momentary assessment, experience sampling method, and real-time data capture. Even though the terms differ, they have in common the use of computer-assisted methodology to assess self-reported symptoms, behaviors, or physiological processes, while the participant undergoes normal daily activities. In this review we discuss the main features and advantages of ambulatory assessment regarding clinical psychology and psychiatry: (a) the use of realtime assessment to circumvent biased recollection, (b) assessment in real life to enhance generalizability, (c) repeated assessment to investigate within person processes, (d) multimodal assessment, including psychological, physiological and behavioral data, (e) the opportunity to assess and investigate context-specific relationships, and (f) the possibility of giving feedback in real time. Using prototypic examples from the literature of clinical psychology and psychiatry, we demonstrate that ambulatory assessment can answer specific research questions better than laboratory or questionnaire studies.

Sign in / Sign up

Export Citation Format

Share Document