Stressed condition occurring in a viscoelastic cylinder in diffusion impregnation

1985 ◽  
Vol 20 (6) ◽  
pp. 533-537
Author(s):  
R. N. Shvets ◽  
Ya. I. Dasyuk ◽  
V. P. Zabolotnyi
Keyword(s):  
Stressed Condition ◽  
Viscoelastic Cylinder ◽  
Diffusion Impregnation

A Finite Element Analysis of the General Rolling Contact Problem for a Viscoelastic Rubber Cylinder

1988 ◽  
Vol 16 (1) ◽  
pp. 18-43 ◽  
Author(s):  
J. T. Oden ◽  
T. L. Lin ◽  
J. M. Bass
Keyword(s):  
Finite Element ◽  
Variational Principles ◽  
Standing Waves ◽  
Rolling Contact ◽  
Finite Element Models ◽  
Viscoelastic Cylinder ◽  
Element Analysis ◽  
Elastic Rubber ◽  
Frictional Effects ◽  
Rough Foundation

Abstract Mathematical models of finite deformation of a rolling viscoelastic cylinder in contact with a rough foundation are developed in preparation for a general model for rolling tires. Variational principles and finite element models are derived. Numerical results are obtained for a variety of cases, including that of a pure elastic rubber cylinder, a viscoelastic cylinder, the development of standing waves, and frictional effects.

Cellular Structure Dynamics of the Hypophysically-Adrenal System of White Mice in Stressed Condition

2017 ◽  
Vol 2 (6) ◽  
pp. 178-182
Author(s):  
M. Коzij ◽  
◽  
G. Grichenko ◽  
A. Silenko
Keyword(s):  
Cellular Structure ◽  
Stressed Condition ◽  
Structure Dynamics ◽  
Adrenal System

scholarly journals Regulation of Ascorbate-Glutathione Pathway in Mitigating Oxidative Damage in Plants under Abiotic Stress

Antioxidants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 384 ◽  
Author(s):  
Mirza Hasanuzzaman ◽  
M. H. M. Borhannuddin Bhuyan ◽  
Taufika Islam Anee ◽  
Khursheda Parvin ◽  
Kamrun Nahar ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Defense Mechanisms ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Vital Role ◽  
Monodehydroascorbate Reductase ◽  
Ros Generation ◽  
Stressed Condition ◽  
Defense System ◽  
Adverse Conditions

Reactive oxygen species (ROS) generation is a usual phenomenon in a plant both under a normal and stressed condition. However, under unfavorable or adverse conditions, ROS production exceeds the capacity of the antioxidant defense system. Both non-enzymatic and enzymatic components of the antioxidant defense system either detoxify or scavenge ROS and mitigate their deleterious effects. The Ascorbate-Glutathione (AsA-GSH) pathway, also known as Asada–Halliwell pathway comprises of AsA, GSH, and four enzymes viz. ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase, play a vital role in detoxifying ROS. Apart from ROS detoxification, they also interact with other defense systems in plants and protect the plants from various abiotic stress-induced damages. Several plant studies revealed that the upregulation or overexpression of AsA-GSH pathway enzymes and the enhancement of the AsA and GSH levels conferred plants better tolerance to abiotic stresses by reducing the ROS. In this review, we summarize the recent progress of the research on AsA-GSH pathway in terms of oxidative stress tolerance in plants. We also focus on the defense mechanisms as well as molecular interactions.

Research Note: The Interactions Among Stress, Vigilance, and Task Complexity

1975 ◽  
Vol 17 (1) ◽  
pp. 106-109 ◽  
Author(s):  
Robert S. Kennedy ◽  
Xenia B. Coulter
Keyword(s):  
Task Complexity ◽  
Vigilance Task ◽  
Research Note ◽  
Stressed Condition ◽  
Complex Task ◽  
Large Group ◽  
Flight Students ◽  
Better Than ◽  
Threat Of Shock ◽  
And Task

A simple (one-channel) or a complex (three-channel) vigilance task was administered with or without threat of shock to a large group of flight students. It was found that a larger absolute decrement was obtained in the complex task, but the relative decrements were equivalent for both. One-channel monitoring was better overall than three-channel monitoring in the non-stressed condition. Stressed subjects performed better than nonstressed, and this enhancement was greater for three-channel monitoring.

Thermal stresses in a viscoelastic cylinder with temperature dependent properties

AIAA Journal ◽  
1964 ◽  
Vol 2 (9) ◽  
pp. 1642-1644 ◽  
Author(s):  
K. C. VALANIS ◽  
G. LIANIS
Keyword(s):  
Thermal Stresses ◽  
Viscoelastic Cylinder ◽  
Temperature Dependent ◽  
Temperature Dependent Properties

Diffusion impregnation of alloys under conditions of complex formation

1985 ◽  
Vol 20 (6) ◽  
pp. 528-533
Author(s):  
V. S. Pavlina ◽  
Ya. S. Matychak
Keyword(s):  
Complex Formation ◽  
Diffusion Impregnation

scholarly journals Differential role of spermine and thermospermine in Arabidopsis thaliana in response to abiotic stresses

2018 ◽  
Vol 16 (2) ◽  
pp. 244-249 ◽  
Author(s):  
Afsana Haque ◽  
Nur E Ferdousy ◽  
Sharif Ar Raffi ◽  
GHM Sagor
Keyword(s):  
Tissue Specificity ◽  
Stressed Condition ◽  
Ionic Condition ◽  
Specific Expression ◽  
Knockout Mutants ◽  
Root And Shoot Length ◽  
Plant Phenotype ◽  
Response To Stress ◽  
Living Organisms

Polyamines (PA) are small organic polycations found in all living organisms. Putrescine (Put), spermidine (Spd), spermine (Spm) and thermospermine (T-Spm) are the most abundant PAs in plants. Of the polyamines (PAs) plant contains at least two types of tetraamines; spermine (Spm) and thermospermine (T-Spm) and they seem to have different functions in plants. The experiment was conducted to eludicate the stress responsive roles of Spm and T-Spm using wild ecotype (Col-0) and three different knockout mutants (spms, acl5 and spms/acl5) of Arabidopsis, differing in the amount of spermine and thermospermine content. First exogenous pretreatment of both tetraamines showed their different effects on plant phenotype including root and shoot length, cholorophyll content both under normal and salt stressed condition. The effect of exogenous T-Spm was more effective than Spm in plant growth and stress tolerance. The mutants varying in endogenous tetraamines content were also found to be different in response to stress (salt, osmotic and ionic) condition. Growth inhibition of spms mutant seedlings was minimum in compare to other mutants and wild type, probably due to higher amount of T-Spm content. Further to differentiate the tissue specific expression of tetraamines, histochemical GUS assay was performed using SPMS and ACL5 promoter:: GUS transgenic plants and the results indicate that the two tetraamines; spermine and thermospermine may play some different and specific role in respect to tissue specificity and stress responses.J. Bangladesh Agril. Univ. 16(2): 244-249, August 2018

Influence of preliminary strain on the resonant vibrations and dissipative heating of a viscoelastic cylinder of finite length

1997 ◽  
Vol 33 (1) ◽  
pp. 35-38 ◽  
Author(s):  
V. G. Karnaukhov ◽  
I. K. Senchenkov ◽  
O. P. Chervinko
Keyword(s):  
Finite Length ◽  
Dissipative Heating ◽  
Viscoelastic Cylinder ◽  
Resonant Vibrations
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