Physicians are key personnel in a sector which is important due to its size as well as the quality of service it provides. We estimate the labor supply of physicians employed at hospitals in Norway, using personnel register data merged with other public records. A dynamic labor supply equation is estimated using a sample of 1303 male physicians observed over the period 1993-1997. The methods of...

the most modern techniques in biotechnology owe their existence to the discovery of dna cloning and the genetic manipulation of organisms. however biotechnology is not new science in fact, many applications represent old practices with new methodologies. human have been used organisms for their benefit in many processes for several thousand years. therefore, one way of thinking about biotechnol...

The Cayley graphs Gm(G)=Cay(Gm,S) of Cartesian powers the finite group G with respect to canonical symmetric subsets S=S(m)⊂Gm are investigated. It is proved that for each m>1 graph Gm(G) determines up isomorphism. groups automorphisms Aut(Gm(G)) determined. shown if a non-abelian group, then Aut(Gm(G))≃(Gm⋊Aut(G))⋊Dm+1, where Dm+1 dihedral order 2m+2. If an abelian (with some exceptions m=3), ...

in recent decades, biotechnologists have striven to improve the quantity and quality of food supply. producing genetically modified (gm) foods is one of the main goals and many countries all over the world have approved the distribution and consumption of the labeled gm foods in their own regions. however, there are still few groups having concerns about allergenicity of gm foods. this review h...

  Partially fed (4 -5 days) H .a. anatolicum (Iranian isolate) female adult ticks were used for preparation of antigens of midgut which are, the gut supernate antigen (GS), gut membrane antigen (GM), triton extracted gut membrane antigen ( TX-GM ) and sodium dodecyl sulphate treated Triton extracted gut membrane antigen (SDS-TX-GM). The New Zealand white rabbits were immunized with GS, GM, TX- ...