Results 11 to 20 of about 1,921,038 (288)

Can chlorophyll fluorescence imaging make the invisible visible?

open access: yesPhotosynthetica, 2021
Chlorophyll fluorescence has developed into a well-established noninvasive technique to study photosynthesis and by extension, the physiology of plants and algae.
R. VALCKE
doaj   +1 more source

Differential response of growth and photosynthesis in diverse cotton genotypes under hypoxia stress

open access: yesPhotosynthetica, 2019
The objectives of the present study were to compare the dynamic of the growth and photosynthetic characteristics of cotton varieties contrasting in waterlogging (WL) tolerance when subjected to hypoxia stress.
R. PAN   +5 more
doaj   +1 more source

Methyl jasmonate elicitation of common bean seedlings induces nucleotidase activity and the expression of several nucleotidase genes in radicles

open access: yesBiologia Plantarum, 2021
Nucleotides are the basic elements of the genetic material, participate in bio-energetic processes, are cofactors and components of secondary metabolites, etc. Nucleotide hydrolases (nucleotidases) are phosphatases that remove the 5'-phosphate group from
G. GALVEZ-VALDIVIESO   +3 more
doaj   +1 more source

The influence of anisotropic growth and geometry on the stress of solid tumors [PDF]

open access: yes, 2017
Solid stresses can affect tumor patho-physiology in at least two ways: directly, by compressing cancer and stromal cells, and indirectly, by deforming blood and lymphatic vessels.
Bravo-Castillero, Julián   +9 more
core   +1 more source

Stress Echocardiography [PDF]

open access: yesHeart, 2003
Stress echocardiography may be performed with exercise and nonexercise stressors, although the use of echo contrast agents makes insertion of an intravenous line important for both techniques. The selection of either stress protocol should be tailored to each patient, and in the opinion of this author, an effective stress echo laboratory should offer ...
Khoury, Vincent, Marwick, Thomas H.
openaire   +4 more sources

Residual Stresses in Layered Manufacturing [PDF]

open access: yes, 1999
Layered Manufacturing processes accumulate residual stresses during materialbuildup. These stresses may cause part warping and layer delamination. This paper presents work done on investigating residual stress accumulation andp(i,rt distortion of ...
Barnett, D.   +3 more
core   +2 more sources

Getting stress out of stressed‐out stress granules [PDF]

open access: yesThe EMBO Journal, 2017
Amyotrophic lateral sclerosis (ALS) pathology is linked to the aberrant aggregation of specific proteins, including TDP‐43, FUS, and SOD1, but it is not clear why these aggregation events cause ALS. In this issue of The EMBO Journal , Mateju et al (2017) report a direct link between misfolded proteins accumulating in stress granules and the phase ...
Pratibha Siwach, Daniel Kaganovich
openaire   +3 more sources

Leaf temperature and peroxidase activity of bearing pistachio cultivars [PDF]

open access: yesJournal of Horticulture and Postharvest Research
Purpose: Environmental stresses are a main disturbing factor influencing horticultural productivity around the world. It will affect all plants including resistant or non-resistant cultivars.
Mehdi Khayyat   +2 more
doaj   +1 more source

Comparative study of the repair of cracked plates with two different composite patches

open access: yesFracture and Structural Integrity, 2020
The aim of this study is to analyze the behavior of a crack with and without reinforcement by a composite patch of an aluminum plate in mode I using the finite element method.
Moulgada Abdelmadjid   +4 more
doaj   +1 more source

Assessment of the stress state of round and annular cross-section beams made with different tensile and compressive properties materials

open access: yesКосмические аппараты и технологии, 2022
At present, there is great interest in carbon-based materials. They have high thermomechanical properties and mass characteristics, are quite technologically advanced.
V. V. Kashelkin   +2 more
doaj   +1 more source

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