Broad hydroxyl (OH) absorption-lines in the 1667 MHz and 1665 MHz transition towards the central region of NGC3079 have been observed at high resolution with the European VLBI Network (EVN). Velocity fields of two OH absorption components were resolved across the unresolved nuclear radio continuum of ∼ 10 parsecs. The velocity field of the OH absorption close to the systemic velocity shows rota...

loss of diurnal rhythm, in cortisol and leptin secretion. J Clin Endocrinol Metab 1998; 83: 280–3. [6] Anker SD, Ponikowski P, Varney S et al. Wasting as independent risk factor for mortality in chronic heart failure. Lancet 1997; 349: 1050–3. [7] Cleland JG, Clark AL. Leptin and cardiac cachexia: marker or mediator? Eur Heart J 1998; 19: 1421–2. [8] Poehlman ET, Scheffers J, Gottlieb SS, Fishe...

OH(1720 MHz) masers permit direct measurements of the magnetic field strength at the Galactic Centre, and their angular broadening constrains models for the medium that scatters radio waves in the central 100 pc of the Galaxy. As the 1720 MHz masers are unaccompanied by the main-line masers at 1665 and 1667 MHz, they must be pumped by collisions in molecular gas that is cooling after being over...

Geodesics are the curves in a surface that make turns just to stay on the surface and never move sideways. A bug living in the surface and following such a curve would perceive it to be straight. We will begin with a definition of geodesics, present various method for finding geodesics on surfaces, and reveal their relationships to shortest paths. The term geodesic comes from the science of geo...

This paper proposes a set of new techniques to improve the implementation of the SHA-2 hashing algorithm. These techniques consist mostly in operation rescheduling and hardware reutilization, allowing a significant reduction of the critical path while the required area also decreases. Both SHA256 and SHA512 hash functions have been implemented and tested in the VIRTEX II Pro prototyping technol...

We report on the first space-VLBI observations of the OH34.26+0.15 maser in two main line OH transitions at 1665 and 1667 MHz. The observations involved the space radiotelescope on board the Japanese satellite HALCA and an array of ground radio telescopes. The map of the maser region and images of individual maser spots were produced with an angular resolution of 1 milliarcsec which is several ...

We present a technique for reconstructing biomolecular structures from scanning force microscope data. The technique works by iteratively refining model molecules by comparison of simulated and experimental images. It can remove instrument artifacts to yield accurate dimensional measurements from tip-broadened data. The result of the reconstruction is a model that can be chosen to include the p...

This paper proposes a set of new techniques to improve the implementation of the SHA-2 hashing algorithm. These techniques consist mostly in operation rescheduling and hardware reutilization, allowing a significant reduction of the critical path while the required area also decreases. Both SHA256 and SHA512 hash functions have been implemented and tested in the VIRTEX II Pro prototyping technol...

Geodesics are the curves in a surface that make turns just to stay on the surface and never move sideways. A bug living in the surface and following such a curve would perceive it to be straight. We will begin with a definition of geodesics, then present various method for finding geodesics on surfaces, and later reveal their relationships to shortest paths. The term geodesic comes from the sci...