Device testing

Contamination of aquatic foodstuffs by the radiocerium in fallout from weapons tests and effluents from nuclear power facilities is well documented. The concentrations of 144Ce in clam muscle and cuttlefish in Japan in 1960 exceeded those of Sr by one to two orders of magnitude and were somewhat greater than those measured in food crops (Nezu et al., 1962). Radiocerium was detected in only a few samples of aquatic foods monitored in the Central Pacific during nuclear device testing there in 1962 (Welander and Palumbo, 1963 ... 

Pendulum Friction Device Test. See under Friction Sensitivity Tests... 

Jet Propulsion Lab Rept TR 32-1553, March 15, 1972. Order as N 72-20920 from NTIS, USDeptCommerce, Springfield, Virginia 22151 2) L.A. Rosenthal V.J. Menichelli, "Electrothermal Follow Display Apparatus for Elect to explosive Device Testing , JetPropln-Rept TR 32—1554, June 1, 1972. Order as N72-21281 from NTIS 3) G. Cohn, ExplsSc-Pyrots, Vol 6, No 3(1973) (Abstract of Refs 1 2)... 

It is hoped that studies similar to those conducted at Cambric can be carried out for nuclear devices tested in other media such as tuff. Re-entry drillback and sampling sooner after detonation would be desirable so that the behavior of shorter-lived species such as Zr, Mo- Tc, ° Ru, Nd, and... 

Finally, the operational lifetimes of both devices were analyzed. Figure 9.14 shows the normalized luminance of the devices tested under accelerated test conditions of high-dc current injection (40 mA cm-2), corresponding to an initial... 

In contrast to chemicals, biomaterial and medical device testing constitutes an extremely diverse, heterogeneous category of evaluation. Because the use of these products normally entails direct or indirect contact with patients, there is an obligation for manufacturers to establish the product s safety before marketing. Medical device safety evaluation assesses the risk of adverse effects due to normal use and misuse. Since adverse effects could result from exposure to the materials from which a device is made, preclinical assessment is needed to minimize the potential hazard to the user, namely, the patient. 

First, safety critical systems must be reliable. These systems control releases in the event of accidents. It s necessary to have a critical analyzer, instrument and electrical system test program. This should consist of preventive maintenance and alarm and trip device testing for panel alarms, emergency isolation valves and other critical components. [7]... 

Synthetic, natural or semi-synthetic composite materials are readily available from various commercial sources, but the quality control of a material varies substantially between medical and research grades. Many aspects of device testing have been outlined in 21 CFR 820 [22] however, during the preclinical phase of testing the most relevant of these guidelines are biomaterial composition, process validation, and design controls. 

H. Karl, J. Fetzer, S. Kurz, G. Lehner and WM. Rucken Rroblem 28 An Electrodynamic Levitation Device, Testing Electromagnetic Analysis Methods (TEAM) Workshop, International Computing Society, Tucson, AR, 1998. 

Had Motorola tested its assumptions, maybe it could have avoided the billions lost on its Iridium (satellite phone) product. Perhaps Apple Computer could have curtailed its 350 million in losses on its handheld Newton device. Test your assumptions as rigorously and often as possible if you want to avoid innovation and business failures. 

After a time delay, the acid will eat through the rubier disc and ignite the sugar chlorate mix. The delay time depends upon the thickness and type of rubber used for the disc. Before using this device, tests should be conducte determine the delay time that can be expected. 

The nominal dose is defined as the amount of active drug metered as a liquid solution from the device. The emitted dose is the amount of aerosolized drug obtained at the exit of the mouthpiece, and the device delivery efficiency is the ratio of the emitted to nominal dose. The mean delivery efficiency was approximately 94% (SD = 3.2) with a 3.4% coefficient of variation. The delivery efficiency for the two devices tested was 93% (SD = 3.60, n = 5) and 95% (SD = 2.8, n = 5), respectively. The intradevice variation was 1.7% (coefficient of variation, n = 2 prototypes). There were no significant differences p > 0.05) in the drug mass output within the device throughout its life cycle, nor between devices tested in the study. 

Figgemeier E. and Hagfeldt A. (2004), Are dye-sensitized nanostructured solar cells stable An overview of device testing and component analyses , Int. J. Photoenergy 6, 127-140. 

Freedom from contamination is increasingly Important as solid state devices increase in complexity and decrease in size. Since corrosion control is a major problem in such devices, tests have been devised to assure the cleanliness level of manufactured parts. 

These molding compounds were also used to encapsulate electronic devices for reliability testing. In Figures 4, 5, and 6, stable bromine CEN outperformed "state-of-the-art" resins in the bias pressure cooker device test (BPC), high temperature storage device test (HTS), and the highly accelerated stress test (HAST). 

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