Results 41 to 50 of about 1,765,133 (301)

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai   +4 more
wiley   +1 more source

Stable potassium isotopes (41K/39K) track transcellular and paracellular potassium transport in biological systems

open access: yesFrontiers in Physiology, 2022
As the most abundant cation in archaeal, bacterial, and eukaryotic cells, potassium (K+) is an essential element for life. While much is known about the machinery of transcellular and paracellular K transport–channels, pumps, co-transporters, and tight ...
John A. Higgins   +8 more
doaj   +1 more source

The influence of shock pressure, pre-shock temperature, and host rock composition on the survival rate of endolithic microorganisms during impact ejection from Mars [PDF]

open access: yes, 2007
Petrographic and biological analysis of shock recovery experiments confirms the possible life transport due to an impact from Mars to ...
Cockell, C. S.   +10 more
core  

Cl−-ATPases: biological active transporters

open access: yesComparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2001
Five widely documented mechanisms of chloride transport across plasma membranes are: anion-coupled antiport; sodium and hydrogen-coupled symport; Cl- channels; and an electrochemical coupling process. No genetic evidence has yet been provided for primary active chloride transport despite numerous reports of cellular Cl(-)-stimulated ATPases co-existing,
Department of Physiology and Department of Medicine, College of Medicine, University of Florida, Gainesville, FL 32610-0274, USA ( host institution )   +2 more
openaire   +3 more sources

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada   +6 more
wiley   +1 more source

Cytomembrane‐Mediated Transport of Metal Ions with Biological Specificity

open access: yesAdvanced Science, 2019
Metal ions are of significant importance in biomedical science. This study reports a new concept of cytomembrane‐mediated biospecific transport of metal ions without using any other materials.
Ming‐Kang Zhang   +6 more
doaj   +1 more source

Coherent exciton dynamics in the presence of underdamped vibrations [PDF]

open access: yes, 2014
Recent ultrafast optical experiments show that excitons in large biological light-harvesting complexes are coupled to molecular vibration modes. These high-frequency vibrations will not only affect the optical response, but also drive the exciton ...
Cao, Jianshu   +3 more
core   +3 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Coexistence and efficiency of normal and anomalous transport by molecular motors in living cells

open access: yes, 2013
Recent experiments reveal both passive subdiffusion of various nanoparticles and anomalous active transport of such particles by molecular motors in the molecularly crowded environment of living biological cells.
Goychuk, Igor   +2 more
core   +2 more sources

Physical and biological controls on fine sediment transport and storage in rivers [PDF]

open access: yes, 2018
Excess fine sediment, comprising particles
Casas-Mulet, R.   +10 more
core   +3 more sources

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