Profound changes in concentrations of phytoplankton biomass and rates of primary production in warm-core Gulf Stream rings can occur, apparently in response to nutrient enrichment, within a few months after a ring separates from the Gulf Stream. In Ring 8 1 -D at 3 months of age the dependence on NO,was 2%3 times as high as in the northern Sargasso Sea and in Ring 79-E shortly after formation. ...

it was important to study the shielded effectiveness to reduce the electromagnetic interference and to protect electronic components. in this paper, the boundary element equation of linear segment was derived from the two-dimension boundary integral equation and linear interpolating function, and the formulas of potential and electric field intensity were also given. To demonstrate the accuracy...

Intellectual property cores pose a signifcant test challenge. The core supplier may not give any information about the internal logic of the core, but simply provide a set of test vectors for the core which guarantees a particular fault coverage. If the core is embedded within a larger design, then the problem is how to apply the specified test vectors to the core and how to test the userdefine...

Intellectual property cores pose a significant test challenge. The core supplier may not give any information about the internal logic of the core, but simply provide a set of test vectors for the core which guarantees a particular fault coverage. If the core is embedded within a larger design, then the problem is how to apply the specified test vectors to the core and how to test the userdefin...

We show through computer simulations that the thin silica ring that surrounds the air core of a photonic-bandgap fiber introduces surface modes. The intensity profile and dispersion of these modes indicate that they are the modes of the waveguide formed by the ring surrounded by air on one side and the photonic crystal cladding on the other. The ring also induces small perturbations of the fund...

A formula of a steroid compound is easily recognized by its four-membered hydrocarbon core (Fig. 1.1a). My little grand daughter called it “a little cottage”, more advanced beginners may recall the term “cyclopentenoperhydrophenanthrene”. All the thousands of natural and synthetic steroids are derivatives of that core. Ring A is the cyclohexane ring on the left; it is attached to another six-me...

abstract the oak leafroller moth , tortrix viridana l. is a destructive pest within it’s spreading area which invades the oak species, especially in west and northwest forests of iran, in recent years. some parts of west azarbayjan’s forests which are located in piranshahr and sardasht region have been affected by this pest since 1989 that oak trees vigor and survival have been gone down result...

in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.