Flow-induced dilation of gracilis muscle arterioles was examined in both genders of control rats and rats chronically treated with N(omega)-nitro-L-arginine methyl ester (L-NAME). After L-NAME treatment (4 wk), systolic blood pressure was significantly increased compared with control, whereas the plasma concentration of nitrate/nitrite was significantly reduced. Isolated and pressurized arterio...

Abstract Invited for this month's cover is the group of Scott McIndoe at University Victoria (Canada). The picture shows a pressurized reaction vessel with tubing leading out flask. That normally leads directly into an electrospray ionization mass spectrometer, where mass‐to‐charge ratio and relative abundance solution phase ions are measured. These data can be used to generate chronograms each...

Isolated, cannulated, and pressurized (100 mmHg) middle cerebral arteries from adult cats were perfused intraluminally at rates from 0 to 4 ml/min with heated and gassed physiological saline solution. An electronic system held pressure constant by changing outflow resistance. The arteries constricted 18.1 ± 0.95% in response to flow and depolarized from -54 ± 0.51 to -40 ± 1.26 mV ( P < 0.05). ...

OBJECTIVES To review the most relevant articles regarding the technical aspects of inhalation therapy, inhalers currently available, and especially major advances in inhalation therapy in pediatrics. SOURCES Articles of MEDLINE database from 1983 were reviewed, in addition to book chapters, and the most important studies were selected according to the criteria established for this article. ...

One strategy for actuating soft machines (e.g., tentacles, grippers, and simple walkers) uses pneumatic inflation of networks of small channels in an elastomeric material. Although the management of a few pneumatic inputs and valves to control pressurized gas is straightforward, the fabrication and operation of manifolds containing many (>50) independent valves is an unsolved problem. Complex p...

There is a critical need to improve the performance and utility of unmanned aerial vehicles (UAVs). Several areas of UAV performance need to be improved for the next generation of UAVS to be used successfully in expanded future combat roles. For example current time aloft is only on the order of an hour or two for electric-powered UAVs. The current generation of UAVs lacks vertical takeoff and ...