The advent of acoustic metasurfaces (AMs), which are the two-dimensional equivalents metamaterials, has opened up new possibilities in wave manipulation using acoustically thin structures. Through interaction between waves and subwavelength scattering, AMs exhibit versatile capabilities to control propagation such as by steering, focusing, absorption. In recent years, this vibrant field expande...

An introduction is given to accelerator mass spectrometry (AMS) technology, the fundamental measurement principles, and physics aspects behind design constrain of AMS instruments. This article shall give an overview on technical constraints instrumentation, general ion optical nuclide specific problems. The historic development detection techniques briefly summarized. wide variety applications ...

The agricultural machinery service (AMS) market enables China to rapidly realize mechanization on the basis of smallholder farmers. Academics generally believe that has created a model matches small-scale farmers with large-scale machinery. However, in recent years, transformation AMS from prosperity decline been under-analyzed. This paper used farm and supplier survey data North Plain estimate...

The nna1 gene mutation is associated with spontaneous degeneration of cerebellar Purkinje cells and germ cells in Ataxia and Male Sterility (AMS) mouse. Since nna1 is also expressed in hippocampal neurons, we investigated their vulnerability to hypoperfusion in AMS mouse. Eight-week-old male wild type (WT) and AMS mice were subjected to bilateral common carotid artery occlusion (BCCAO) for 10 m...

The measurement of cosmogenic radionuclides 10Be and 26Al by accelerator mass spectrometry (AMS) has become an invaluable tool for dating events processes in Quaternary geochronology, archaeology paleoanthropology. Here we present overview the current state research providing theoretical methodological background describe sample preparation AMS. We also summarize main geochronology calculation ...