Study of Polysulfone-Impregnated Hydroxyapatite for Ultrafiltration in Whey Protein Separation.

Polysulfone (Psf) ultrafiltration flat-sheet membranes were modified with hydroxyapatite (HA) powder during preparation using the wet-phase inversion method. HA was incorporated to enhance the protein separation capabilities. The asymmetric Psf membranes were synthesized using NMP as the solvent.

Exploring emotional experiences of Chinese university novice EFL teachers: An ecological perspective.

Drawing on Bronfenbrenner's ecological system, the present study employs a qualitative longitudinal approach to delve into the emotional experiences and ecological factors that contribute to these emotions in eight novice EFL teachers from four Chinese public universities. Based on data collected from semi-structured interviews and case documents, this study identifies four types of emotional experiences-fear, anger, sadness, and joy-in their first school year. The findings revealed that their emotional experiences were shaped by college students, teachers' teaching competence, EFL teaching-related activities in the microsystem, interpersonal relationships in the mesosystem, novice teacher education and development systems in the exosystem, traditional cultural values and English curriculum reforms in the macrosystem, and changes in the emotional experiences over time in the chronosystem.

Preparation and Characterization of Polyethersulfone/Activated Carbon Composite Membranes for Water Filtration.

Ultrafiltration membrane technology holds promise for wastewater treatment, but its widespread application is hindered by fouling and flux reduction issues. One effective strategy for enhancing ultrafiltration membranes involves incorporating activated carbon powder. In this study, composite polyethersulfone (PES) ultrafiltration membranes were fabricated to include activated carbon powder concentrations between 0 and 1.