Utilizing quantum computer to investigate quantum chemistry is an important research field nowadays.In addition to the ground-state problems that have been widely studied, the determination of excited-states plays a crucial role in the prediction and modeling of chemical reactions and other physical processes.Here, we propose a non-variational full

Practical work and textbooks have an important role in primary science education.This study analyses the complexity of practical work in Portuguese primary science textbooks.The level of complexity was appreciated by the level of conceptual demand of practical work, as given by the type of practical work, the complexity of scientific knowledge, the

Underwater acoustic images are acquired using sonar instrument that uses sound propagation to navigate and map the sea floor.The sonar devices are effectively used to create images of large area of the seabed.However, the visual perception of the object in the acoustic image depends on refraction, which is a function of changes in the speed of soun

Since the first report of robotic gastrectomy, experienced laparoscopic surgeons have used surgical robots to treat gastric cancer and resolve problems associated with laparoscopic gastrectomy.However, compared with laparoscopic gastrectomy, the superiority of robotic procedures has not been clearly proven.There are several advantages to using robo