1.Definition and Characteristics of PFAS Per- and polyfluoroalkyl substances (PFAS) constitute an ever-expanding family of over 4,000 types of synthetic chemical pollutants. Originating in the 1930s, they primarily include perfluorocarboxylic acids (PFCAs), perfluorosulfonic acids (PFSAs), perfluoroalkyl sulfonates, and perfluoroalkyl substances, among others. Due to their amphiphilic properties, PFAS are widely...

Cellular function visualization and detection constitute a core technical framework in modern cell biology. By employing specific molecular probes and detection reagents, these techniques transform invisible intracellular biological activities into quantifiable and traceable optical signals and chemical data. This technological domain enables comprehensive monitoring—from ion concentration dynamics and enzymatic activity...

Cell analysis is a cornerstone technology in modern life sciences research. It employs a series of methodologies to conduct systematic detection and quantitative studies of cellular morphology, structure, function, metabolic state, and molecular mechanisms. Its scope spans multiple dimensions—from basic cell counting and viability assessment to complex tasks such as...

Microbial cultivation serves as a foundational pillar across life sciences, medical diagnostics, food safety, and industrial biotechnology. This core technique involves isolating, propagating, and studying target microorganisms by providing optimal nutritional and environmental conditions. Broad Applications Across Critical Industries Its applications are vast, spanning from pathogen identification and antibiotic susceptibility testing to industrial strain selection, vaccine...

In the world of modern dentistry, the success of a procedure hinges not just on clinical skill, but on the advanced dental materials that form the foundation of every restoration. The development of these biomaterials—from composite resins and dental cements to sophisticated bonding agents—is a precise science where chemical synthesis and engineering meet biological necessity. This article explores...

Organic azides are compounds containing an azido group. Since the first synthesis of an organic azide (phenyl azide) by scientist P. J. Griess in 1864, these compounds have found widespread application in materials science and chemical biology due to their unique reactivity and biological activity. The azido group serves as...