Hydrogels, especially double-network hydrogels, are attractive candidates as load-bearing biomaterials, e.g., tissue-engineering supports for articular cartilages and bones. In this study, we describe the modification of a hydrogel by introduction third monomer, N-[3-(dimethylamino)propyl]methacrylamide, to network system, which serves reactive site subsequent interfacial reactions surface-init...

In recent decades, many kinds of research have been conducted on alternative fuels for compression ignition (CI) engines. Low/zero-carbon fuels, such as bioalcohols and hydrogen, are the most promising extensively studied because their availability, ease manufacturing, environmental benefits. Using these in CI engines is environmentally economically beneficial. The common alcohols methanol, eth...

basic processes (e.g., phonon generation and electron–hole pair creation); thus, determining energy dissipation mechanisms offers the potential to control friction in new ways. [ 3–5 ] Theoretically, when an object is moving along an insulator surface, kinetic energy is dissipated solely through phonon emission (i.e., lattice vibration of the substrate). However, if the substrate is conductive,...

To reduce the environmental impacts and costs of production biolubricant, this work proposes use vegetable oil mixtures that have not been chemically modified. Formulations biolubricants were proposed with jatropha curcas, castor, macauba kernel, pulp oils since these potential physical-chemical properties to generate a high-performance biolubricant. A simplex centroid quaternary mixture design...

Background: Sexual dysfunction is one of the most common problems following menopause. This study aimed to evaluate effect cinnamon and vitex on improving sexual function in postmenopausal women. Methods: was a randomized triple-blind clinical trial with control group. Randomized sampling used allocate women into three cinnamon, vitex, placebo groups 35. A index utilized before two months after...

Even though polyurethanes (PU) constitute a class of highly versatile and customizable polymeric materials, being able to modify their surface properties, for example, wettability, without altering the composition bulk material would often be desirable. However, PU-based materials can both rather diverse resilient chemical modification. Thus, in this study, three PU variants are subjected diffe...