On the face of it all this sounds hygienically excellent, but as far as achievement of a national supply of clean milk is concerned there is still one very weak point. Dairymen are in no way legally bound to hold these licences. If the public is foolish enough still to accept heavily infected milk, it will be delivered to them indefinitely. The local health authority cannot compel the productio...

The presented Clean-CORBA interface opens the way for developing parallel and distributed applications consisting of components written in a functional programming language, Clean. The interface defines a language mapping from the IDL language used by CORBA to Clean. It contains an IDL-to-Clean compiler which generates the necessary stub and skeleton routines from the IDL files. The interface i...

This paper investigates the power of polynomial-time quantum computation in which only a very limited number of qubits are initially clean in the |0〉 state, and all the remaining qubits are initially in the totally mixed state. No initializations of qubits are allowed during the computation, nor are intermediate measurements. The main contribution of this paper is to develop unexpectedly strong...

decreasing changes of climatic elements such as: daily precipitation, weekly precipitation, seasonal precipitation and annual precipitation can be toward to drought phenomena. the recognition it and planning for passing it, could be decreasing of disasters, because create of drought is slow but it effects is very damages. the aim of this paper is descriptive analyze and it type of research is a...

as benzimidazole ring is an important pharmacophore in modern drug discovery and benzimidazoles are very important intermediates in organic reactions, the preparation of benzimidazoles has gained considerable attention in recent years. here, a comparative study on the synthesis of benzimidazoles from aromatic, aliphatic and heterocyclic carboxylic acid, benzonitrile and o-phenylenediamine under...

we introduce center-like subsets z*(r,f), z**(r,f) and z1(r,f), where r is a ring and f is a map from r to r. for f a derivation or a non-identity epimorphism and r a suitably-chosen prime or semiprime ring, we prove that these sets coincide with the center of r.

for an arbitrary ring $r$, the zero-divisor graph of $r$, denoted by $gamma (r)$, is an undirected simple graph that its vertices are all nonzero zero-divisors of $r$ in which any two vertices $x$ and $y$ are adjacent if and only if either $xy=0$ or $yx=0$. it is well-known that for any commutative ring $r$, $gamma (r) cong gamma (t(r))$ where $t(r)$ is the (total) quotient ring of $r$. in this...