A carbon-supersaturated (CS-) high-speed steel punch was prepared using low-temperature plasma carburizing for fine blanking of pure titanium plates.The bare high-speed steel punch was also prepared as a reference to describe the adhesion and abrasive galling in the fine blanking of the titanium plates, even in a single shot.The CS-punch was free f

The helical planetary transmission system (HPTS) is widely used in wind power, hydropower, and shield machine, which operating conditions are extremely complicated, and the existence of component installation errors will result in response deviations to the theoretical design.A dynamic model for slice type bending-torsional-pendulum of the HPTS is

Giardia duodenalis is a pathogenic intestinal protozoan parasite of humans and many other animals.Giardia duodenalis is found throughout the world, and infection is known to have adverse health consequences for human and other mammalian hosts.Yet, many aspects of the biology of this Shoes - Sandals - Youth ubiquitous parasite remain unresolved.Whol

Palaeontological deductions from the fossil remnants of extinct dinosaurs tell us much about their classification into species as SHOESSANDALSHEELED well as about their physiological and behavioural characteristics.Geological evidence indicates that dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million