Thirty subjects drove screws into perforated sheet metal mounted on a horizontal surface using three air-powered tools that varied in shape (right-angle, in-line, and pistol-shaped). The four horizontal work locations ranged from 13-88 cm in front of the body and were placed at 25 cm intervals. The vertical placement of the horizontal beam was at midthigh, elbow, and midchest height. Subjects d...

To defeat objections about "expensive" ergonomic product solutions, think like your colleagues do in facilities, real estate, human resources, and IT, and more clearly communicate the broader benefits of adjustable office furniture. The question shouldn't be "How are we going to pay for an improved office environment?" The better questions are, "Can we identify the ways that we already pay for ...

Surface structures that are different from the corresponding bulk, reconstructions, are exceedingly difficult to characterize with most experimental methods. Scanning tunneling microscopy, the workhorse for imaging complex surface structures of metals and semiconductors, is not as effective for oxides and other insulating materials. This paper details the use of transmission electron microscopy...

We observe electron emission when vibrationally excited NO molecules with vibrational state v, in the range of 9 < or = v < or =18, are scattered from a Cs-dosed Au surface. The quantum efficiency increases strongly with v, increasing up to 10(-2) electrons per NO (v) collision, a value several orders of magnitude larger than that observed in experiments with similar molecules in the ground vib...

background: the consumption of healthy food is considered as an essential need to devoid the physical, chemical, and biological hazards. the importance of this issue is more conspicuous in places such as hospitals where people with somehow compromised immune systems are under treatment. therefore, this research aimed to evaluate the microbiological quality of food contact surfaces in a kitchen ...

s of papers published by Jesse DouglasAll references are to the Bulletin of the American Mathematical Society and takethe form year, page, article number. [4] (1927, 143-4, 32) Reduction of the problem of Plateau to an integral equation.[5] (1927, 259, 5) Reduction to integral equations of the problem of Plateau for the case of twocontours.[6] (1928, 405, 5) Reduction of the...