Results 1 to 10 of about 871,872 (287)

A Magnetically Driven Amoeba‐Like Nanorobot for Whole‐Process Active Drug Transport

open access: yesAdvanced Science, 2023
The passive diffusion performance of nanocarriers results in inefficient drug transport across multiple biological barriers and consequently cancer therapy failure.
Yueqiang Zhu   +6 more
doaj   +2 more sources

Carbon sequestration by multiple biological pump pathways in a coastal upwelling biome

open access: yesNature Communications, 2023
Multiple processes transport carbon into the deep ocean as part of the biological carbon pump, leading to long-term carbon sequestration. However, our ability to predict future changes in these processes is hampered by the absence of studies that have ...
Michael R. Stukel   +5 more
doaj   +2 more sources

The Balance of Fluid and Osmotic Pressures across Active Biological Membranes with Application to the Corneal Endothelium. [PDF]

open access: yesPLoS ONE, 2015
The movement of fluid and solutes across biological membranes facilitates the transport of nutrients for living organisms and maintains the fluid and osmotic pressures in biological systems. Understanding the pressure balances across membranes is crucial
Xi Cheng, Peter M Pinsky
doaj   +2 more sources

Feasibility of Transport of 26 Biologically Active Ultrashort Peptides via LAT and PEPT Family Transporters

open access: yesBiomolecules, 2023
The aim of this work is to verify the possibility of transport of 26 biologically active ultrashort peptides (USPs) into cells via LAT and PEPT family transporters.
Vladimir Khatskelevich Khavinson   +3 more
doaj   +3 more sources

Biological and Medical Aspects of Active Heal Transport of Bile Acids

open access: yesAnnals of Medicine, 1991
The active transport of conjugated bile acids by the ileum is responsible for the enterohepatic circulation of bile acids, a physiological process that ensures an ample supply to the intestine of these key biological surfactants, irrespective of the rate of their biosynthesis from cholesterol.
A F, Hofmann   +2 more
openaire   +3 more sources

Optimal transport and control of active drops [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2021
Significance Transportation, in its broadest sense, is an important task in many fields, including engineering, physics, biology, and economics, and a great deal is known about optimal and efficient strategies to move matter, energy, and information ...
Suraj Shankar, Vidya Raju, L. Mahadevan
semanticscholar   +1 more source

Quantifying biological carbon pump pathways with a data-constrained mechanistic model ensemble approach [PDF]

open access: yesBiogeosciences, 2022
The ability to constrain the mechanisms that transport organic carbon into the deep ocean is complicated by the multiple physical, chemical, and ecological processes that intersect to create, transform, and transport particles in the ocean. In this paper
M. R. Stukel   +3 more
doaj   +1 more source

Kidney epithelial cells are active mechano-biological fluid pumps

open access: yesNature Communications, 2022
The role of mechanical forces driving kidney epithelial fluid transport and morphogenesis in kidney diseases is unclear. Here, using a microfluidic platform to recapitulate fluid transport activity of kidney cells, we report that renal epithelial cells ...
Mohammad Ikbal Choudhury   +14 more
semanticscholar   +1 more source

Transport of complex and active fluids in porous media

open access: yesJournal of rheology, 2022
Complex and active fluids find broad applications in flows through porous materials. Nontrivial rheology can couple to porous microstructure leading to surprising flow patterns and associated transport properties in geophysical, biological, and ...
Manish Kumar, J. Guasto, A. Ardekani
semanticscholar   +1 more source

Phenomenological model of motility by spatiotemporal modulation of active interactions

open access: yesNew Journal of Physics, 2021
Transport at microscopic length scales is essential in biological systems and various technologies, including microfluidics. Recent experiments achieved self-organized transport phenomena in microtubule active matter using light to modulate motor-protein
Dominik Schildknecht, Matt Thomson
doaj   +1 more source

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