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Novel Co-Polyamides Containing Pendant Phenyl/Pyridinyl Groups with Potential Application in Water Desalination Processes.
Polymers (Basel)
January 2025
Centro de Nanotecnología Aplicada, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Camino La Pirámide 5750, Huechuraba 8580745, Chile.
This study explores the development and evaluation of a novel series of aromatic co-polyamides featuring diverse pendant groups, including phenyl and pyridinyl derivatives, designed for water desalination membrane applications. These co-polyamides, synthesized with a combination of hexafluoroisopropyl, oxyether, phenyl, and amide groups, exhibited excellent solubility in polar aprotic solvents, thermal stability exceeding 350 °C, and the ability to form robust, flexible films. Membranes prepared via phase inversion demonstrated variable water permeability and NaCl rejection rates, significantly influenced by the pendant group chemistry.
View Article and Find Full Text PDFClassification of Histologically Proven Inflammation in Clinically Inactive Corneal Scars: Implications for Graft Outcomes After Penetrating Keratoplasty.
J Clin Med
January 2025
Eye Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg im Breisgau, Germany.
: Clinically inactive corneal scars have repeatedly been shown to exhibit histological inflammation. This study aimed to evaluate the degree of histological inflammation in clinically inactive corneal scars of different origins and its correlation with graft rejection and failure following penetrating keratoplasty. : The study included 205 primary corneal explants with clinically inactive central scars resulting from herpes simplex virus keratitis (HSV, = 55), keratoconus ( = 39), mechanical trauma ( = 27), scrophulosa ( = 22) or other/unknown causes ( = 62).
View Article and Find Full Text PDFAnti-Human Leukocyte Antigen Antibody Detection from Terasaki's Humoral Theory to Delisting Strategies in 2024.
Int J Mol Sci
January 2025
Immunology Department, University Hospital Marqués de Valdecilla, 39008 Santander, Spain.
The human leukocyte antigen (HLA) system plays a critical role in transplant immunology, influencing outcomes through various immune-mediated rejection mechanisms. Hyperacute rejection is driven by preformed donor-specific antibodies (DSAs) targeting HLAs, leading to complement activation and graft loss within hours to days. Acute rejection typically occurs within six months post-transplantation, involving cellular and humoral responses, including the formation of de novo DSAs.
View Article and Find Full Text PDFInterpersonal Perfectionism and Perceived Control's Influence on the Continuity of Sports Practice in Adolescents.
Int J Environ Res Public Health
January 2025
Facultad de Deportes, Universidad Autónoma de Baja California, Mexicali 21100, Mexico.
Based on the theory of planned behavior, the objective was to test a theoretical model that explains the intention to continue practicing sports among adolescents currently involved in sports practice in Mexicali based on factors that generate perceived social pressure to be perfect (perceived descriptive norm) and that lead to internal factors of perceived control (perceived competence, general self-concept, and enjoyment). A battery of questionnaires that measured the study variables was applied to 195 adolescent athletes of both sexes. The causal model with observed variables rejected part of the hypothesis since the athletes' perception that their parents impose high performance expectations on them and that they criticize them when these expectations are not achieved was not associated with the athletes' perceived competence.
View Article and Find Full Text PDFJourney of Hope for Patients with Fibromyalgia: From Diagnosis to Self-Management-A Qualitative Study.
Healthcare (Basel)
January 2025
Optometry Department, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi Arabia.
Background/objectives: Fibromyalgia syndrome (FMS) is a chronic, debilitating condition characterized by widespread pain, fatigue, and psychological distress. There is a lack of qualitative studies on the unique experiences of patients with FMS in Arab countries, particularly through social media. Despite the availability of diagnostic criteria, diagnosing and managing patients remains challenging.
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