the group size and behavior of goitered gazelle was studied over the year 2001 in kalmand-bahadoran protected area. gazelle groups showed no stable organization in kalmand protected area. in spring season, group size was smaller than other seasons and the largest groups were seen in winter. number of solitary gazelles increased during the mating season. adult males were territorial in mating se...

Recent results show that the establishment of wing melanization patterns in Drosophila depends on the veins. While several genes have been shown to play a role in melanization, changes in a single gene - the one encoding tyrosine hydroxylase - are sufficient to generate novel pigmentation patterns.

Gustavsson, E. 2007. Grassland plant diversity in relation to historical and current land use. Doctor's dissertation. About 150 years ago agriculture was drastically reformed and around 90% of the formerly vastly distributed semi-natural grasslands, i.e. unfertilised and uncultivated grasslands, have since then disappeared. Accordingly, grassland plant diversity has declined due to abandonment,...

The voltaic pile opened a new chapter in the history of electricity. Electrodynamics, which deals with flowing charges, became a basis for the practical utilization of electricity. In addition to classical electrostatics, the research of electrodynamics became increasingly extensive. Ányos Jedlik, professor of physics was a prominent personality at Pest University, in the period after Volta. In...

We have benefited from discussions with Aloysius Siow. We thank the SSHRCC (Baker Grant # 410-99-0112, Hamilton Grant # 410-98-0426) for research funding.

This review surveys late 19 century kinematics and the theory of machines as seen through the contributions of the German engineering scientist, Franz Reuleaux (1829-1905), often called the “father of kinematics”. Extremely famous in his time and one of the first honorary members of ASME, he has largely been forgotten in much of modern mechanics literature in English until recently as some of h...

Materials which optical and electrical properties can be dynamically tuned have potential applications in many areas including smart windows, ultrafast switches, spatial light modulators, reconfigurable metamaterials and frequency selective filters. Vanadium dioxide (VO2) has been envisioned as one of the most promising material to realize tunable optical devices for THz and NIR applications. V...

The recent theoretical progress in the description of semileptonic decays in the framework of the heavy mass expansion is summarized. Both inclusive and exclusive decays are considered. Contribution to the XXIXth Rencontres de Moriond, Electroweak Interactions and Unified Theories, Méribel, France, March 12–19, 1994. CERN-TH.7264/94 May 1994