Device Description

The electrochemical etch-stop technology that produces the silicon island is rather complex, so that an etch stop directly on the dielectric layer would simplify the sensor fabrication (Sect. 4.1.2). The second device as presented in Fig. 4.6 was derived from the circular microhotplate design and features the same layout parameters of heaters and electrodes. It does, however, not feature any sihcon island. Due to the missing heat spreader, significant temperature gradients across the heated area are to be expected. Therefore, an array of temperature sensors was integrated on the hotplate to assess the temperature distribution. The temperature sensors (nominal resistance of 1 kfl) were placed in characteristic locations on the microhotplate, which were numbered Ti to T4. 

The measurement results have been compared to the corresponding values of a FEM simulation in Sect. 4.2.2, and the vahdity of the model for simulations of the temperature distribution has been established. 

Instead of a silicon island underneath the dielectric layer, a polysilicon plate can be placed in the membrane center. Such a device was not fabricated, but the effect of a heat spreader that is integrated in the dielectric membrane was demonstrated by simulations. The results of the simulations are discussed in Sect. 4.2.2 [115,116]. 

Another issue is how the tin-oxide droplet changes the temperature distribution in the heated area. This issue was experimentally investigated and the results are summarized in Sect. 4.2.3. 

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As most throttling control valves are still operated bv pneumatic actuators, the control-valve device descriptions that follow relate primarily to devices that are used with pneumatic actuators. The function of hydraulic and electrical coimteiparts are very similar. Specific details on a particular valve-control device are available from the vendor of the device. 

Device description and intended use and objectives and duration of investigation Protocol... 

Including indications for use, device description, aiternative practices and procedures currentiy avaiiabie for the condition, marketing history (US or foreign) non-ciinical laboratory studies, clinical investigations and overall conclusions. 

In silico models will aid both the standardisation and individualisation of medical care. Standardisation of diagnoses, drug and device descriptions, procedures, etc. will make relevant information more readily and more widely available. On the other hand, advanced models will allow development of patient-specific procedures for diagnosis and treatment. This will move the focus from the treatment of diseases to the curing of patients. 

Device Description Rtfs. Theoretical Mass Sensitivity (SnJ (Hz en lptg) Examples ... 

Device description, manufacturer, and serial number Device range (must satisfy process requirements)... 

Explanation that the study is a research procedure Description of study type and research aims Description of study medications/devices Description of procedures to be followed... 

IMPLANTED NONDEGRADABLE SUSTAINED-RELEASE DEVICES Description of Drug Delivery System... 

As well as control systems being configured using objects, many other devices and systems are configured using this object-oriented approach. Fieldbus device descriptions are examples of objects that contain inputs, internal parameters, a function and an output. A Fieldbus device may t5q)ically have multiple functions, a dozen or more inputs and potentially hundreds of parameters and outputs that may be accessed. 

Support for various Fieldbus standards can be easily incorporated into such a system, since the device descriptions can be passed between the field devices and the asset management software as another object class. This can be managed regardless of where the Fieldbus software resides. 

A maintenance package can therefore request information on a transmitter, and the complete device details would be available. The objectbrokering layer would convert from the appropriate device description and make this available to the maintenance package via D-COM. If the same maintenance package was looking for the total number of stop/starts and running hours on a motor, it would no longer be required to maintain separate counters and timers in the PLC or control system the data could be obtained... 

A trial burn plan must be included as part of the engineering description section of the RCRA Part B permit application. The trial bum plan describes the goals and procedures of the trial bum The planinclirdes discussions on the waste characteristics and the system equipment, including controls and monitoring devices, descriptions of the conditions which will be demonstrated during the test, and descriptions of the sampUng and analysis methods which will be used to collect the data... 

Intended frequency of operation and rate of duty cycles (per hour) of the SRCF Required response time of the SRCF, the processing time (electrical and mechanical) Required response time e.g. on included input and output devices Description of the SRCF Description of fault reaction function(s)... 

Electronic Device Description Language and Field Device Tool... 

The user application is made up of a function block and device description, and it is directly based on the communication stack shown. 

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