Based on the measured activities, the phase diagrams and the annexation principle, the calculating models of mass action concentrations for Ag-Bi and Ag-Bi-In melts have been formulated. The calculated results agree with practice and obey the mass action law, showing that the models formulated can reflect the structural characteristics of both melts. Meanwhile, it confirms that annexation principle is applicable to the Ag-Bi-In metallic melts. The melts involving eutectic which give rise to phase separation, and in which activities exhibit positive deviation from Raoult's law is the basic cause of melts transforming from homogeneous to heterogeneous ones

When an electric charge is supported at rest in a static gravitational field, its electric field is not supported with the charge, and it falls freely in the gravitationa field. Drawing the electric field lines continuously in time, we find that they always emerge from the charge, but the electric field is curved and there is a stress force between the freely falling (curved)field and the static charge. The charge radiates

TEM in situ tensile tests of 310 stainless steel show that a dislocation free zone (DFZ) forms if the displacement keeps constant after dislocations are emitted from a crack tip. The elastic DFZ is gradually thinned and the stress in the DFZ will reach the cohesive strength, resulting in nucleation of nanocracks in it and their bluntness into voids. If continuously tensioning, the inhomogeneously thinning ahead of the crack tip, initiat-ing and connecting of microcracks or microvoids will be observed rather than a DFZ, nanocracks' initiation and bluntness into voids. The inverse pile-up ahead of a loaded crack tip can move back to the crack tip when unloading

NMR spectroscopy in structure-based drug design Gordon CK Roberts NMR methods for the study of motion in proteins continue Structure and dynamics of the binding site improve, and a n d complexes Methodological developments in NMR of macromolecules relevant to drug design

Being aimed to developing intermetallic base structural materials to be worked at above 1000℃, a systematic investigation has been performed of the fundamental crystallographic structure, phase constitution map, density-composition dependence, oxidation resistance and general mechanical behaviour for the ternary intermetallic alloys in the Nb-Ti-Al system. Promissing results have been obtained at the initial stage in the current program. The 1100℃ high temperature strength at the strain rate of 10-2/s and 10-5/s for the ternary compound NbTiAl3 （γ1） base alloys are generally much higher than that of the binary compound TiAl （γ）, especially in the γ1 + α2 phase region, it is as high as twice as that of TiAl. The densities are 4.1-4.79g/cm3, depending on relative amount of the intermetallics involved and the density difference between the intermetallics. The oxidation resistance at th

The hyde school In 1966, Joseph W. Gauld founded the first Hyde school in Bath, Maine in response to a system of education which hebelieved was failing its children because of conflicting priorities. His search for a new approach in education led to a program that valued attitude over aptitude, effort over ability, and s character over talent

Lead-in activities What is ethics in our country? Honesty and modest are two basic ethics in our country. A society with ethics is a society with prosperity, so is business. 2. By far, which country is the relatively clear country in the world? Why? Singapore. two possible reasons: near-perfect welfare system; high salary for all the working people

Background information your ho their potential The hyde school In 1966, Joseph W. Gauld founded the first Hyde school in Bath, Maine in response to a system of education which hebelieved was failing its children because of conflicting priorities. His search for a new approach in education led to a program that valued attitude over aptitude, effort over ability, and s

What is Metamorphism?1) Metamorphism is the change in form that happens in Earths crustal rocks in response to changes in temperature and pressure

Sun Tzu chinese General Know the enemy and know yourself; in a hundred battles you will never be in peril When you are ignorant of the enemy but know yourself, your chances of winning or losing are equal. If ignorant of both your enemy and yourself, you are certain in every battle to be in peril