The surface tension of molten Sn-Bi (mole fraction X(Bi) = 0.455) alloy has been determined by the sessile drop method at oxygen partial pressure (P(O2)) of 1.0x10(-6) MPa and different temperatures. The experimental results have been analyzed and discussed, and the positive temperature coefficient of surface tension of molten Sn-Bi alloy has been elucidated. The surface tension of this molten alloy has also been obtained by calculation using STCBE based on Butler's equation and thermodynamic data. The experimental results agree well with the calculation values.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.jcis.2005.10.049 | DOI Listing |
J Phys Chem B
January 2025
Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
Interaction of a novel dihydroxy dibenzoazacrown (HDTC) with various surfactants of different charges, for example, anionic (sodium dodecylsulfate, SDS), cationic (dodecyl trimethylammonium bromide, DTAB), cationic gemini (butanediyl-1,4-bis(dimethylcetylammonium bromide), 16-4-16), ionic liquid (1-hexadecyl-3-methylimidazolium chloride, CMImCl), and nonionic (polyoxyethylene sorbitan monostearate, Tween-60), has been investigated at a widespread range of surfactant concentrations (including premicellar, micellar, and postmicellar regime) in 15% (v/v) EtOH medium at room temperature. Several experimental techniques, viz., tensiometry, UV-vis spectroscopy, and steady-state fluorimetry, are implemented to explicate these interactions.
View Article and Find Full Text PDFInsect Sci
January 2025
Functional Morphology and Biomechanics, Institute of Zoology, Kiel University, Kiel, Germany.
Water striders inhabit the elastic surface tension film of water, sharing their environment with other aquatic organisms. Their survival relies heavily on swift maneuverability and navigation around floating obstacles, which aids in the exploration of their habitat and in escaping from potential threats. Their high agility is strongly based on the ability to execute precise turns, enabling effective directional control.
View Article and Find Full Text PDFData Brief
February 2025
Department of Biomedical Engineering, University of Massachusetts, 1 University Ave., Lowell, MA 01854, USA.
This dataset comprises a comprehensive collection of videos and images illustrating the fluid dynamics of swallowing and aspiration in a patient-specific pharyngolaryngeal model with varying epiglottis angles. The data also includes the physical properties of the fluids used, comprising dynamic viscosity, surface tension, and contact angle. Videos under varying swallowing conditions were collected to investigate the mechanisms underlying aspiration.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Neurosurgery Department, the First Affiliated Hospital of Ningbo University, Ningbo 315000, China. Electronic address:
Despite the worldwide prevalence of Parkinson's disease (PD), there are currently no effective methods for treating or preventing α-synucleinopathy. Research has demonstrated that small molecules are capable of preventing α-synuclein aggregation and the associated neurotoxicity. Nonetheless, the specific anti-amyloid mechanism of these compounds is not thoroughly comprehended in detail.
View Article and Find Full Text PDFBiomaterials
December 2024
Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325011, China. Electronic address:
The effective prevention and treatment of anastomotic leakage after intestinal anastomosis for colorectal diseases is still a major clinical challenge. In order to assist intestinal anastomosis healing and avoid anastomotic leakage caused by high tension, low blood supply or infection, we designed a double-layer nanofiber intestinal anastomosis scaffold, which was composed of electrospun PTMC/PHA nanofibers as the main layer, and electrospun PVA/OHA-Gs nanofibers with antibacterial properties as the antibacterial surface layer. This double-layer scaffold has good toughness, its maximum tensile force value could reach 8 N, elongation could reach 400 %, and it has hydrophilic properties, and its contact angle was about 60°.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!