The present investigation describes for the first time leg lateral abduction performance during long-term microgravity exposure. Two astronauts took part in the experiments, starting 2 weeks into the mission and lasting for 5 months. Results on joint angles kinematics confirm previous investigations on parabolic flights, showing good task fulfillment for both subjects. Special interest was focu...

The effects of propentofylline, a xanthine derivative and adenosine transport inhibitor, were evaluated following anteromedial cortex lesion in the rat. Propentofylline (2 £ /10 mg/kg, intraperitoneally) was administered for 7 days post-insult and basic fibroblast growth factor (bFGF) immunoreactivity measured at designated time points in the peri-lesional cortex and ipsilateral dorsal striatum...

New techniques were applied for maintaining viable motoneurons in rat cervical spinal cord slices to study electrical and morphological properties from postnatal day (PD) 2–49. Lucifer Yellow injections showed nine to 12, or more, viable motoneurons/slice at PD2, reduced to two to three in lamina IX by PD9. At PD2 and from PD14 onward healthy motoneurons were electrically similar to those of ad...

Without visual information, human subjects are not able to maintain displacement in a straight line. This tendency to depart from linearity during locomotion is called veering. The purpose of the present experiment was to investigate the extent to which attention could modulate navigation in the absence of visual information. Blindfolded locomotion on linear pathways was assessed under three di...

Tetrahydrobiopterin (BH4) has a trophic effect on pheochromocytoma-12 (PC12) cells such as insulin-like growth factor-1 (IGF-1). We investigated involvement of BH4 in the trophic effect of IGF-1 on PC12 cells. IGF-1 (10–300 ng/ml) increased cellular BH4 content in a dose-related manner. Cellular BH4 content increased after 6–36 h incubation with IGF-1. IGF-1induced increase in the cellular BH4 ...

Capsaicin-activated channels present in sensory neurons are ligand-gated cation channels that largely account for mediating some types of pain. The cAMP-dependent protein kinase (PKA) signal pathway was suggested to mediate the prostaglandin-induced enhancement of capsaicin-evoked inward current (ICAP) in rat sensory neurons. It is not clear, however, whether PKA acts directly on the capsaicin-...

This report presents a concise and complete theory of convex sets of distributions, which extends and uni es previous approaches. Lower expectations and convex sets of probability distributions are derived from axioms of preference; concepts of conditionalization, independence and conditional independence are de ned based on convex sets of distributions. c 1996 Carnegie Mellon University This r...

This report describes a line linker based on tools of Frequentist Statistics: Chi-square signi cance testing and the Akaike Information Criterion. The line linker has been implemented as an AVS module and is available as freeware. This report describes the basic facts about the distributed linker and its use. c 1996 Carnegie Mellon University This research is supported in part by NASA under Gra...

Considering the insulators ageing in a mixture of PVC and dye, set following operating conditions time to ensure proper operation perfect safety industrial installations using insulated conductors. The results showed that insulation carried out by L.C main office was good quality (on thermal aspect), because resistance is so high (i.e. 3940 Mega Ohms under normal conditions). lifespan 50 years ...