LASER ADDITIVE MANUFACTURING OF HIERARCHICAL MULTIFUNCTIONAL CHIRAL METAMATERIAL WITH DISTINGUISHED DAMAGE-RESISTANCE AND LOW-FREQUENCY BROADBAND SOUND-ABSORPTION CAPABILITIES

Traditional materials or advanced artificially engineered metamaterials are incapable of effectively addressing the simultaneous challenges of impact energy hazards and low-frequency noise.There is an urgent need for multifunctional materials that can address this Photography multi-physics field coupling problem.Herein, a hierarchical multifunction

Background: Alcohol dependence has become a major public health problem with many implications on the lives of dependents and their families.Objectives: The objectives of this study is to ascertain the enabling factors to seek medical help and continue behavior change among alcohol dependents and to assess the perceptions of health-care providers r

The global, innovative firms have been using new tools to create relations based on Tape and Adhesives value-changing, especially knowledge because global customers are more exacting and they take decisions more knowingly.The systemic business ecosystems show the possibility to gain synergy effects that are a result of combination of competencies o

Learning science is a learning done in Elementary School (ES).During this time, science learning is still felt difficult by most teachers and prospective ES teachers.These difficulties include difficulty in designing learning.These difficulties affect the readiness and ability of teachers in implementing learning in the classroom.The purpose of thi