Results 1 to 10 of about 1,415,133 (306)

Physical model of end-diastolic and end-systolic pressure-volume relationships of a heart

open access: yesFrontiers in Physiology, 2023
Left ventricular stiffness and contractility, characterized by the end-diastolic pressure-volume relationship (EDPVR) and the end-systolic pressure-volume relationship (ESPVR), are two important indicators of the performance of the human heart.
Yunxiao Zhang   +9 more
doaj   +1 more source

On the Risk of Infection by Infectious Aerosols in Large Indoor Spaces

open access: yesAerosol and Air Quality Research, 2022
Airborne diseases can be transmitted by infectious aerosols in the near field, i.e., in close proximity, or in the far field, i.e., by infectious aerosols that are well mixed within the indoor air. Is it possible to say which mode of disease transmission
Bardia Hejazi   +4 more
doaj   +1 more source

Computational analyses decipher the primordial folding coding the 3D structure of the beetle horn

open access: yesScientific Reports, 2021
The beetle horn primordium is a complex and compactly folded epithelial sheet located beneath the larval cuticle. Only by unfolding the primordium can the complete 3D shape of the horn appear, suggesting that the morphology of beetle horns is encoded in ...
Keisuke Matsuda   +4 more
doaj   +1 more source

Model-based prediction of spatial gene expression via generative linear mapping

open access: yesNature Communications, 2021
Single cell RNA-seq loses spatial information of gene expression in multicellular systems because tissue must be dissociated. Here, the authors show the spatial gene expression profiles can be both accurately and robustly reconstructed by a new ...
Yasushi Okochi   +4 more
doaj   +1 more source

Electrophysiological Characterization of Human Atria: The Understated Role of Temperature

open access: yesFrontiers in Physiology, 2021
Ambient temperature has a profound influence on cellular electrophysiology through direct control over the gating mechanisms of different ion channels. In the heart, low temperature is known to favor prolongation of the action potential.
Rupamanjari Majumder   +10 more
doaj   +1 more source

Honeybee flight dynamics and pair separation in windy conditions near the hive entrance

open access: yesNew Journal of Physics, 2023
Animals and living organisms are continuously adapting to changes in their environment. How do animals, especially those that are critical to their ecosystem, respond to rapidly changing conditions in their environment?
Bardia Hejazi   +3 more
doaj   +1 more source

Honeybees modify flight trajectories in turbulent wind

open access: yesNew Journal of Physics, 2022
In windy conditions, the air is turbulent. The strong and intermittent velocity variations of turbulence are invisible to flying animals. Nevertheless, flying animals, not much larger than the smallest scales of turbulence, manage to maneuver these ...
Bardia Hejazi   +3 more
doaj   +1 more source

Spiral- and scroll-wave dynamics in mathematical models for canine and human ventricular tissue with varying Potassium and Calcium currents

open access: yesPhysics Open, 2022
We conduct a systematic, direct-numerical-simulation (DNS) study, in mathematical models for ventricular tissue, of the dependence of spiral- and scroll-wave dynamics on GKr, the maximal conductance of the delayed rectifier Potassium current (IKr ...
K.V. Rajany   +3 more
doaj   +1 more source

The effects of inhomogeneities on scroll-wave dynamics in an anatomically realistic mathematical model for canine ventricular tissue

open access: yesPhysics Open, 2021
Ventricular tachycardia (VT) and ventricular fibrillation (VF) are lethal rhythm disorders, which are associated with the occurrence of abnormal electrical scroll waves in the heart.
K.V. Rajany   +3 more
doaj   +1 more source

The Importance of Central Pattern Generator in Simulation of Human Gait

open access: yesFrontiers in Biomedical Technologies, 2021
No ...
Fereidoun Nowshiravan Rahatabad   +1 more
doaj   +1 more source

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