10,730 research outputs found
A PC parallel port button box provides millisecond response time accuracy under Linux
For psychologists, it is sometimes necessary to measure people's reaction times to the nearest millisecond. This article describes how to use the PC parallel port to receive signals from a button box to achieve millisecond response time accuracy. The workings of the parallel port, the corresponding port addresses, and a simple Linux program for controlling the port are described. A test of the speed and reliability of button box signal detection is reported. If the reader is moderately familiar with Linux, this article should provide sufficient instruction for him or her to build and test his or her own parallel port button box. This article also describes how the parallel port could be used to control an external apparatus
PC-3 cell proliferation curves at different seeding densities.
In order to determine the optimal innoculation density of PC-3 cells, we adopted five cell seeding densities such as 6*105, 4*105, 2*105, 1*105, and 0.5*105 cell/ml.</p
The respiratory muscle function and walking endurance in stroke patients: A preliminary study
Hemophilia B with mutations at glycine-48 of factor IX exhibited delayed activation by the factor VIIa-tissue factor com
The isolation and characterization of Chaperonin 60 from sweet potato roots - Involvement of the chaperonins in starch biosynthesis
PHOX2B Mutation-Confirmed Congenital Central Hypoventilation Syndrome in a Chinese Family.
The isolation and characterization of Chaperonin 60 from sweet potato roots: involvement of the chaperonins in starch biosynthesis
"Fluid Color" Sigh : A Useful Indicator for Discrimination Between Plemal Thickening and Plemal Effusion
Fabrication of a molecularly imprinted polymer sensor by self-assembling monolayer/mediator system
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