Generic devices

Figure 1.1 Sensor principles. (Top) Schematic diagram of a sensor that produces an electrical output in response to the presence of an input quantity. (Bottom) Biosensor ctnn-prising the generic device shown at top with a molecular recognition layer that has a highly selective response.

Medical devices are assigned to regulatory classes based upon intended use and indications for use, which impact the level of regulatory control required. The FDA has created about 1700 different generic device types, grouping these into 16 medical... 

At present, spacers are not considered to be medical products and can therefore be marketed without any documentation. The performance characteristics of pMDIs are required to be strictly documented before approval by drug regulatory authorities considering the significant influence of spacers on pMDI performance, it would seem logical to require similar documentation of the pMDI-spacer combination before approval and marketing. Spacers should not be considered generic devices that can be used with any pMDI. In the future, spacers should be tested for their effect on aerosol delivery with specified pMDIs and marketed only for use with these pMDIs. 

Firms choose the combination of workers, capital, and expenditures on workplace safety that maximize their expected profits. When deciding how much to spend on safety enhancing measures employers consider the possible economic benefits of a safer workplace, such as greater output, lower pay for their workers, and lower workers compensation insurance premiums. To keep our simulations with a multiplicity of injury classes simple we again followed the assiunption of our earlier chapters in having firms choose the level of a generic device, safety equipment, that represents all safety enhancing expenditure firms make. A firm s expected profit then depends on the price of its product and its choices of safety equipment, capital, and its (effective) number of workers, tig, which is less than its total labor force, n. ... 

Fig. 3.12 Schematic picture of a generic device, (a) A planar structure, (b) a laterally confined structure...

Other expansions of FDA s authority include the Dmg Price Competition and Patent Term Restoration Act of 1984, commonly known as the 1984 Amendments or the Waxman-Hatch Act, which was passed to attain quicker marketing of safe, effective, and less expensive generic dmgs and the Safe Medical Device Amendments of 1990, which was passed to correct perceived weaknesses in the implementation of the 1976 Device Amendments. Congress further expanded FDA authority over nutrition labeling and health and nutrient content claims on food labels with the Nutrition Labeling and Education Act of 1990. 

Intrauterine devices are medical products that prevent conception when placed in the utems. In spite of their ancient origins, modem intrauterine devices (lUDs) have been widely used only in the last 30 years. The two generic subclasses of lUDs are nonmedicated (inert) devices and medicated lUDs, ie, progestin-releasing and copper lUDs. 

A third research challenge that is generic to electronic, photonic, and recording materials and devices stems from the need for starting materials that meet purity levels once thought to be imattainable. 

The several industrial applications reported in the hterature prove that the energy of supersonic flow can be successfully used as a tool to enhance the interfacial contacting and intensify mass transfer processes in multiphase reactor systems. However, more interest from academia and more generic research activities are needed in this fleld, in order to gain a deeper understanding of the interface creation under the supersonic wave conditions, to create rehable mathematical models of this phenomenon and to develop scale-up methodology for industrial devices. 

This device is a generically simple reactor comprising a micro-channel Y-piece section and an elongated reaction micro channel attached [26, 27]. The microstructures were mechanically fabricated in PMMA using a flat end mill. A top plate was joined with the microstructured plate by baking under vacuum. The reaction temperature was fixed using a hot-plate. 

Pedagogical and in many cases mnemotechnical formula structures appear to be also deduced at a very generic level as a consequence of the use of this kind of devices. 

This demand for new devices initiated worldwide research and development programs in the field of "sensors and actuators". Many generic sensor technologies were examined, from which the thin- and thick-film, glass fiber, metal oxides, polymers, quartz and silicon technologies are the most prominent. 

Pressure relief valve (PRV) A pressure relief device designed to open and relieve excess pressure and to reclose after normal conditions have been restored. PRV is a generic term applied to relief valve (set up for liquid flow), safety valve (set up for gas or vapor flow), and safety relief valve (set up for either liquid or compressible flow). 

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