A standard sample holder and vial for cryocooled macromolecular crystals has been defined for use with robotic sample changers. This SPINE standard sample holder is a modified version, with added features and specifications, of sample holders in common use. In particular, the SPINE standard meets the precision required for automatic sample exchange and includes a cap that is identified by a two...

The application of the FDTD technique in the calculation of the S-parameters of specific diode mounting and waveguide probe structures is discussed in this paper. Comparative results are given and the FDTD technique is evaluated as an optimized CAD tool. Introduction The finite difference time domain method is used in the RF characterization of diode mounting and waveguide probe structures. A v...

The various models of the Olympus gastrocamera use film of either 4 or 5 mm size, with 32 exposures per roll of film. The developed film is returned from the processing laboratory, therefore, as a film strip, 4 or 5 mm in width, and approximately 34 cm in length. The Olympus Camera Company supply a viewer with a magnifying power of x 10 with each instrument, and this is of some value in examini...

In order to clarify the role of 2,6-dichlorophenol (2,6-DCP) in the courtship of Amblyomma cajennense, sexually mature males that had previously fed on rabbits were tested in bioassays. The males were released onto dummies treated with whole female extract or synthetic 2,6-DCP at a concentration of two female equivalents, or with hexane (control), and their responses were observed. In the prese...

A novel and easy crystal mounting technique was developed for the sulphur SAD method using chromium Kα radiation (2.29Å). Using this technique, the cryo-buffer and cryoloop around the protein crystal can be removed before data collection to eliminate their X-ray absorption. The superiority and the reproducibility of the datasets with our mounting technique were demonstrated using tetragonal hen...

Male sexual behavior depends on gonadal androgens in species of all major vertebrate lineages, including reptiles. However, male sexual behavior includes distinct appetitive and consummatory phases, typically denoted as courtship and mounting, with potentially different hormonal control. Different proximate controls of courtship versus mounting could enable disconnected evolutionary losses and ...