We investigated the coordination of fingertip forces in subjects who used the tips of two fingers to restrain an instrumented manipulandum with horizontally oriented grip surfaces. The grip surfaces were subjected to tangential pulling forces in the distal direction in relation to the fingers. The subjects used either the right index and middle fingers (unimanual grasp) or both index fingers (b...

Bio-inspired compound feet with spines and foot pads were made to improve the take off performance of the Flea, a jumping robot that can jump 30 times its body length. A no-slip model of the flea was used to compare the performance of the flea with and without spines and foot pads on styrofoam, sandpaper 60Cw, and Teflon. On styrofoam, the flea with spines increased its kinetic energy by 65%, b...

This research was carried out to determine the effects of germination temperature and 12 dormancy breaking applications on seeds gum tragacanth (Astragalus gummifer Labill.) bush. The in Field Crops Department laboratory, I?d?r University Faculty Agriculture, 2019. Gum were germinated for 28 days dark at constant temperatures 10, 15, 20, 25 °C variable 20/10 °C, 20/15 25/10 25/15 °C. As a resul...

laboratory experiments were performed to determine the effect of various scarification treatments at four temperature regimes on germination of licorice seeds . a randomized complete block design with four replications was used. germination counts were made every day for 2 weeks. at 50c, none of the chemically and mechanically scarified and non scarified seeds germinated. at 15, 25, and 350...

In this article, we report on a flexible sensor based on a sandpaper molded elastomer that simultaneously detects planar displacement, rotation angle, and vertical contact pressure. When displacement, rotation, and contact pressure are applied, the contact area between the translating top elastomer electrode and the stationary three bottom electrodes change characteristically depending on the m...

Two different procedures for inoculation of HSV on corneas of BALB/c mice were evaluated. The first was by the use of HSV suspensions directly on the corneas and the other was after corneal scarification. Animals by this later method presented greater morbidity and mortality than those of first group, suggesting that inoculation of HSV without scarification of the cornea should be the method of...

The coconut palm Cocos nucifera L, is a cultivar that arrived in Brazil around 1553 by the Portuguese and expanded along entire coast of country, with commercial production four regions: North, Northeast, Midwest Southeast. has great relevance agroindustry. However, cultivation been affected diseases, among them, sandpaper, which causes losses up to 50% production, if there no control. objectiv...