Seventeen commercially available jet nebulizers from 15 commercial sources were studied (Acorn-I, Acorn-II, AquaTower, AVA-NEB, Cirrhus, Dart, DeVilbiss 646, Downdraft, Fan Jet, MB-5, Misty Neb, PARI LC JET, PARI-JET, Salter 8900, Sidestream, Updraft-II, Whisper Jet). All nebulizers were filled with 2 ml of saline solution plus 0.5 ml of albuterol and powered with the same source (DeVilbiss Pul...

Relevance . The use of antibacterial drugs as feed additives for many years has made it possible to reduce the risk developing infectious pathologies and, a result, increased productivity industry, in addition obvious advantages, constant antibiotics develops bacterial resistance, negatively affects representatives normoflora biocenoses and an accumulating effect aquaculture. One ways increase ...

As part of of the ARPA MADE initiative, we are beginning to develop ACORN, an Advanced Collaborative Open Resource Network, ACORN will provide the infrastructure to create an electronic community which will be able to design and sell engineered products in competitive markets as well as conduct research and development by collaborating through a network. Creating such a community is a task of n...

Acorn Woodpeckers live in extremely stable kin groups. Nonetheless, only 59.9% of birds caught in roosting aggregations gave distress calls or fear screams. Distress calling was highly repeatable among individuals and apparently heritable. However, the incidence of distress calling did not vary seasonally or according to age, sex, or status. Also, with two marginally significant exceptions, dis...

We illustrate Archimedes’ method using models produced with 3D printers. This approach allowed us to create physical proofs of results known to Archimedes and to illustrate ideas of a mathematician who is known both for his mechanical inventions as well as his breakthroughs in geometry and calculus. We use technology from the 21st century to trace intellectual achievements from the 3rd century ...

Question: What mathematical discovery more than 1500 years ago: • Is one of the greatest, if not the greatest, single discovery in the field of mathematics? • Involved three subtle ideas that evaded the greatest minds of antiquity, even including geniuses such as Archimedes? • Was fiercely resisted in Europe for hundreds of years after its discovery? • Even today, in historical treatments of ma...

In the childrens' book The Phantom Tollboothh by Norton Juster one can nd the following passage: Yes, please,, said Milo. Can you show me the biggest number there is?? I'd be delighted,, the Mathemagician] replied, opening one of the closet doors. We keep it right here. It took four miners just to dig it out.. Inside was the biggest 3 Milo had ever seen. It was fully twice as high as the Mathem...

W e describe the implementation and performance of Archimedes 2, an integrated mechanical assembly planning system. Archimedes 2 includes two planners, two assembly sequence animation facilities, and an associated robotic workcell. Both planners use fully 3 dimensional data. A rudimenta y translator from high level assembly plans t o control code for the robotic workcell has also been implement...