Metamorphism refers to the physical and chemical changes that rocks undergo when exposed to conditions of high temperature, high pressure, or some combination thereof. Rocks that have undergone metamorphism exhibit chemical and structural changes that...

Metamorphism can be defined as the solid state recrystallisation of pre-existing rocks due to changes in heat and/or pressure and/or introduction of fluids i.e without melting. There will be mineralogical, chemical and crystallographic changes....

Zoned amphiboles and clinopyroxenes in a garnet amphibolite from the Nyurundukan ophiolitic complex, in the northwest Baikal region, have been analyzed by electron microprobe for major elements and by ion microprobe for their REE, Cr, Ti, V, Zr, Y, and Nb content. The samples...

The need for bandwidth, driven primarily by the explosive demand for information transfer and communication services, has necessitated the push to microwave and millimeter-wave frequencies. While silicon-based semiconductor devices dominate lower frequency electronics, high speed compound semiconductor technologies, such as gallium arsenide (GaAs),...

The American painter Megan Olson (born 1971) calls the current exhibition of her paintings Still Movement, which I take to be an allusion to still life-an impression that's amply confirmed in pictures that depict the dynamic processes of nature with a precision, stability and concreteness...