Native solium and potassium adenosine triphosphatase from guinea pig kidney accepted a phosphate group from radioactive inorganic phosphate to form an acyl phosphate bond at the active site in the presence or absence of sodium ion. Magnesium ion was always required. In the presence of sodium ion and absence of adenosine triphosphate, there was no phosphorylation by inorganic phosphate. Addition...

Many theoretical studies were devoted in the past to ion-specific effects trying to interpret a large body of experimental evidence, such as surface tension at air/water interfaces and force measurements between charged objects. Although several mechanisms were suggested to explain the results, such as dispersion forces and specific surface-ion interactions, we would like to suggest another sou...

Teachers in General Practice until the final year of the undergraduate curriculum.1,2 For these reasons it is worthwhile to review the present teaching arrangements and to examine whether or not there is any evidence that University of Bristol students are at a disadvantage in their learning opportunities. Since 1971, the General Practice teaching has taken place during a 9-week 'Medicine in the

General Practice in Australia 2000 retains most of the format of its predecessor, but many of the chapters have additional (as well as updated) information. There are some entirely new chapters on topics not covered at all (or only in passing) in the first edition. There is also a minor change of style: the Department says that it allowed authors “... more freedom to explore contentious issues ...

READING and, with the help of colleagues, 'field-testing' this manual at various times throughout the Christmas season, I was struck with how sihiilar the editors' problem is with that of the housewife. The latter has to recycle traditional dishes in a fresh manner just as the editors of this manual attempt to rearrange material that has appeared elsewhere often by the same publisher and invari...

Reflection on past achievements and future challenges 10 years after the establishment of the Australian General Practice Training program.

Magnetic excitations in the quasi-one-dimensional antiferromagnet IPA-CuCl3 are studied by cold neutron inelastic scattering. Strongly dispersive gap excitations are observed. Contrary to previously proposed models, the system is best described as an asymmetric quantum spin ladder. The observed spectrum is interpreted in terms of composite Haldane spin chains. The key difference from actual S=1...