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Lyotropic "Salty" Tuning for Straightforward Diversification and Anisotropy in Hydrogel Actuators.
Langmuir
January 2025
Chemistry Department, Bilkent University, Ankara 06800, Turkey.
The specific ion effect (SIE), the control of polymer solubility in aqueous solutions by the added ions, has been a phenomenon known for more than a century. The seemingly simple nature of the ion-polymer-water interactions can lead to complex behaviors, which have also been exploited in many applications in biochemistry, electrochemistry, and energy harvesting. Here, we show an emerging diversification of actuation behaviors in "salty" hydrogel and hydrogel-paper actuators.
View Article and Find Full Text PDFThe Influence of Dietary Habits on Male Lower Urinary Tract Symptoms: Differential Influence of Water Intake on Voiding Symptoms and Storage Symptoms.
World J Mens Health
November 2024
Department of Urology, SMG-SNU Boramae Medical Center, Seoul National University Collegy of Medicine, Seoul, Korea.
Purpose: To investigate the dietary factors affecting male lower urinary tract symptoms (LUTS).
Materials And Methods: This retrospective study analyzed men who underwent health check-ups. The men who completed the International Prostate Symptom Score (IPSS) and a dietary questionnaire with 19 items were included in the study.
Mouth Rinsing and Ingesting Unpleasant Salty or Bitter Solutions After Heavy-Intensity Cycling Does Not Influence Sprint Performance or Knee-Extensor Force in Trained Cyclists.
Int J Sports Physiol Perform
December 2024
School of Health Sciences, Western Sydney University, Campbelltown, NSW, Australia.
Purpose: The present study investigated the effect of unpleasant salty or bitter tastes on cycling sprint performance and knee-extensor force characteristics in different fatigue states.
Methods: Following a familiarization session, 11 trained male cyclists completed 3 experimental trials (salty, bitter, and water) in a randomized crossover order. In each trial, participants cycled at 85% of the respiratory compensation point for 45 minutes and then, after a 5-minute rest, completed a 1-minute sprint.
Thriving in salty environments: Aspergillus niger's halotolerance and BTEX biodegradation potential.
World J Microbiol Biotechnol
December 2024
CEB - Centre of Biological Engineering, University of Minho, Braga, 4710-057, Portugal.
Article Synopsis
- Benzene, toluene, ethylbenzene, and xylene (BTEX) are hazardous compounds found in marine waters, primarily due to oil spills and industrial effluents, necessitating effective bioremediation methods in saline environments.
- The study evaluated the halotolerance of Aspergillus niger by gradually increasing salinity to 30‰, revealing optimal growth at 25‰ with significant biomass production.
- Batch reactor experiments showed that the adapted Aspergillus niger could efficiently degrade BTEX compounds, achieving nearly complete removal in 7 days, with benzene being the most effectively adsorbed compound on the fungal biomass.
How sensitive are protein hydration shells to electrolyte concentration and protein composition?
Protein Sci
January 2025
Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany.
Proteins of obligate halophilic organisms have an unusually high number of acidic amino acids, thought to enable them to function in multimolar KCl environments. Clarifying the molecular scale mechanisms by which this occurs is relevant for biotechnology, to enable enzymatic synthesis of economically important small molecules in salty environments and other environments with low water activity. Previous studies have suggested that acidic amino acids are necessary at high salt concentration to keep the proteins hydrated by competing with the ions in solution for available water (the "solvent-only" model).
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