Results 61 to 70 of about 7,742,171 (287)

Strain and strain rate echocardiography in children with Wilson’s disease [PDF]

Cardiovascular Journal of Africa, 2016
This study aimed to evaluate strain and strain rate echocardiography in children with Wilson's disease to detect early cardiac dysfunction.In this study, 21 patients with Wilson's disease and a control group of 20 age- and gender-matched healthy children were included.
Cemşit, Karakurt, Serkan, Çelik, Ayşe, Selimoğlu, İlknur, Varol, Hamza, Karabiber, Saim, Yoloğlu   +5 more
openaire   +2 more sources

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Use of strain, strain rate, tissue velocity imaging, and endothelial function for early detection of cardiovascular involvement in patients with beta-thalassemia

Annals of Pediatric Cardiology, 2017
Background: Global ventricular function often remains normal in patients with beta-thalassemia major. (β-TM) until late. Tissue Doppler and strain imaging may be useful to assess regional myocardial function abnormalities in these patients.
Abhinav Gupta, Aditya Kapoor, Shubha Phadke, Archana Sinha, Shridhar Kashyap, Roopali Khanna, Sudeep Kumar, Naveen Garg, Satyendra Tewari, Pravin Goel   +9 more
doaj   +1 more source

Properties of the strain rate sensitivity function produced by the linear viscoelasticity theory and existence of its maximum with respect to strain and strain rate

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
Strain rate sensitivity of stress-strain curves family generated by the Boltzmann–Volterra linear viscoelasticity constitutive equation (with an arbitrary relaxation modulus) under uni-axial loadings at constant strain rates is studied analytically as ...
Andrew Vladimirovich Khokhlov
doaj   +1 more source

Strain and Strain Rate Echocardiography and Coronary Artery Disease [PDF]

Circulation: Cardiovascular Imaging, 2011
The echocardiographic assessment of regional myocardial function plays a critical role in the diagnosis and management of ischemic heart disease and in most laboratories relies on the visual detection of endocardial wall motion abnormalities and assessment of left ventricular (LV) ejection fraction.
openaire   +2 more sources

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Strain rate patterns from dense GPS networks [PDF]

Natural Hazards and Earth System Sciences, 2009
The knowledge of the crustal strain rate tensor provides a description of geodynamic processes such as fault strain accumulation, which is an important parameter for seismic hazard assessment, as well as anthropogenic deformation. In the past two decades,
M. Hackl, R. Malservisi, S. Wdowinski
doaj  

Evaluation of left ventricular performance in hypertensive patients by speckle tracking echocardiography: Correlation with brain natriuretic peptide

The Egyptian Heart Journal, 2014
Background: Hypertension results in hemodynamic changes ranging from maladaptive left ventricular hypertrophy (LVH) to heart failure. Two-dimensional speckle tracking echocardiography (2D-STE) allows rapid and accurate analysis of regional and global ...
Waleed Abdou Ibrahim Hamed, Abdallah Mostafa Kamal, Mohammed Fahmy Noamany, Mahmoud Aly Soliman, Mai Mohammed Abdel Ra’ouf   +4 more
doaj   +1 more source

Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates [PDF]

, 2010
In the current contribution the mechanical behaviour at high strain rates of AZ31 magnesium alloy sheet is studied. Uniaxial deformation properties were studied by means of tensile split Hopkinson pressure bar (SHPB) at different temperatures.
Hurtado, I., Letzig, D., Gálvez, F., Yi, S., Pérez-Prado, M. T., Dudamell, N. V., Pérez Prado, María Teresa, Dudamell, N.V., Ulacia, I., Gálvez Díaz-Rubio, Francisco   +9 more
core   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source