Abstract Effective absorption of low-frequency waterborne glass.dildo sound with subwavelength absorbers has always been a challenging work.In this paper, we derive two theoretical requirements for broadband perfect absorption of low-frequency waterborne sound by ultrathin acoustic metasurface under a finite-thickness steel plate followed by semi-i
Obesity has been declared as global epidemic that has nearly doubled during recent decades.In opi eiffel for this color this systematic review, PubMed, Web of Science, EMBASE, Cochrane and Scopus databases were searched for entire animal studies and clinical trials focusing on the effects of various probiotic supplements on obesity up to September
Abstract When should you claim a pension (such as social security) in the US? Much current advice focuses on the increase in the annual pension benefit as individuals delay claiming a pension, an increase due to the actuarial fairness of the system.However, individuals face two risks: whether they live to the planned claiming age, and how long they
With the development of science and technology and the continuous improvement of related technologies, low earth orbit (LEO) satellite communication has become a hot technology that countries all over the world are chasing.The advantages of orthogonal time frequency spacetechnology can well ps5 price new jersey solve the signal transmission problem