scholarly journals Silicon Nanoparticles (SiNPs) in Sustainable Agriculture: Major Emphasis on the Practicality, Efficacy and Concerns

2021 ◽  
Author(s):  
Javaid Akhter Bhat ◽  
Nitika Rajor ◽  
Gaurav Raturi ◽  
Shivani Sharma ◽  
Pallavi Dhiman ◽  
...  
Keyword(s):  
Sustainable Agriculture ◽  
Biogenic Silica ◽  
Silicon Nanoparticles ◽  
Stress Conditions ◽  
Prophylactic Effect ◽  
Beneficial Element ◽  
Major Emphasis

Silicon (Si), a beneficial element for plants, is known for its prophylactic effect under stress conditions. Many studies have documented the role of biogenic silica (bulk-Si) in alleviating biotic and...

scholarly journals Role of ethylene and the APETALA 2/ethylene response factor superfamily in rice under various abiotic and biotic stress conditions

2017 ◽  
Vol 134 ◽  
pp. 33-44 ◽  
Author(s):  
Rambod Abiri ◽  
Noor Azmi Shaharuddin ◽  
Mahmood Maziah ◽  
Zetty Norhana Balia Yusof ◽  
Narges Atabaki ◽  
...  
Keyword(s):  
Biotic Stress ◽  
Stress Conditions ◽  
Ethylene Response Factor ◽  
Response Factor ◽  
Abiotic And Biotic Stress ◽  
Ethylene Response ◽  
Apetala 2

Role of PARP Under Stress Conditions: Cell Death or Protection?

2003 ◽  
Vol 28 (2) ◽  
pp. 187-194 ◽  
Author(s):  
Vincenzo Giuseppe Nicoletti ◽  
Anna Maria Giuffrida Stella
Keyword(s):  
Cell Death ◽  
Stress Conditions

scholarly journals NADPH oxidase-derived ROS and the regulation of pulmonary vessel tone

2012 ◽  
Vol 302 (11) ◽  
pp. H2166-H2177 ◽  
Author(s):  
G. Frazziano ◽  
H. C. Champion ◽  
P. J. Pagano
Keyword(s):  
Oxygen Tension ◽  
Vascular Tone ◽  
Systemic Circulation ◽  
Oxygen Species ◽  
Partial Pressure Of Oxygen ◽  
Low Oxygen ◽  
Key Factors ◽  
Pulmonary Vessel ◽  
Major Emphasis

Pulmonary vessel constriction results from an imbalance between vasodilator and vasoconstrictor factors released by the endothelium including nitric oxide, endothelin, prostanoids, and reactive oxygen species (ROS). ROS, generated by a variety of enzymatic sources (such as mitochondria and NADPH oxidases, a.k.a. Nox), appear to play a pivotal role in vascular homeostasis, whereas elevated levels effect vascular disease. The pulmonary circulation is very sensitive to changes in the partial pressure of oxygen and differs from the systemic circulation in its response to this change. In fact, the pulmonary vessels contract in response to low oxygen tension, whereas systemic vessels dilate. Growing evidence suggests that ROS production and ROS-related pathways may be key factors that underlie this differential response to oxygen tension. A major emphasis of our laboratory is the role of Nox isozymes in cardiovascular disease. In this review, we will focus our attention on the role of Nox-derived ROS in the control of pulmonary vascular tone.

Dynamic Behaviour of Plain Slideways

1966 ◽  
Vol 181 (1) ◽  
pp. 169-184 ◽  
Author(s):  
R. Bell ◽  
M. Burdekin
Keyword(s):  
Machine Tool ◽  
Dynamic Behaviour ◽  
Damping Capacity ◽  
Friction Characteristic ◽  
Stick Slip ◽  
Friction Characteristics ◽  
Physical Systems ◽  
Major Emphasis

The friction characteristics resulting from the motion of one surface over another form a very important facet of the behaviour of many physical systems. This statement is particularly valid when considering the behaviour of machine tool slideways. Most slideway elements consist of two plain surfaces whose friction characteristic is modified by the addition of a lubricant. In many cases the complete slideway consists of many mating surfaces and the choice of slideway material, slideway machining and lubricant is often influenced by the long term problem of wear. The aim of this paper is to present results of experiments on a test rig designed to be representative of machine tool slideway conditions; the experiments were wholly concerned with the behaviour of the bearing under dynamic conditions. The major emphasis is on results obtained with a polar additive lubricant which appears to exclude the possibility of ‘stick-slip’ oscillations. A parallel series of tests are reported where a normal hydraulic oil was used as lubricant. The use of this second lubricant allowed some study of the ‘stick-slip’ process. The dynamic friction characteristics, cyclic friction characteristics and damping capacity of several slideway surface combinations have been obtained and are discussed in the context of earlier work in the field and the role of slideways in machine tool behaviour.

Role of Plant Bioactives in Sustainable Agriculture

2020 ◽  
pp. 591-605
Author(s):  
Amjad Iqbal ◽  
Muhammad Hamayun ◽  
Farooq Shah ◽  
Anwar Hussain
Keyword(s):  
Sustainable Agriculture
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