Duration mode

Field emission cathodes were examined in the long duration mode for 10 hours under fixed value of current 50 pA. The test objective was in stabilization of the emission current value by means of the high-voltage power supply. During the experiment measurements of voltage, supplied on equipment, and emission were performed every second. 

Virus Peak Age of Onset Time of Year Duration Mode of Transmission Symptoms... 

Duration mode The malfunction occurs when the vehicle is in a relevant operating condition or dangerous driving situation... 

Pump-probe absorption experiments on the femtosecond time scale generally fall into two effective types, depending on the duration and spectral width of the pump pulse. If tlie pump spectrum is significantly narrower in width than the electronic absorption line shape, transient hole-burning spectroscopy [101. 102. 103. 104. 105. 106. 107. 108. 109. 110. 111. 112 and 113] can be perfomied. The second type of experiment, dynamic absorption spectroscopy [57, 114. 115. 116. 117. 118. 119. 120. 121 and 122], can be perfomied if the pump and probe pulses are short compared to tlie period of the vibrational modes that are coupled to the electronic transition. 

It is also possible to switch a single picosecond pulse out of the train of mode-locked pulses using an electrooptic switch. It is possible to obtain a single pulse having duration in the picosecond regime or even less. Pulses with durations in the regime of a few hundred femtoseconds (10 s) are also available (Fig. 4e). 

Ruby lasers are frequently operated in the normal pulse mode, ie, pulse durations are around 1 ms and pulse energy up to tens of joules, or in the... 

Q-switched mode, ie, pulse duration are on the order of a few tens of nanoseconds and peak power in excess of 10 W. 

Another variation is the mode-locked dye laser, often referred to as an ultrafast laser. Such lasers offer pulses having durations as short as a few hundred femtoseconds (10 s). These have been used to study the dynamics of chemical reactions with very high temporal resolution (see Kinetic LffiASURELffiNTS). 

Pulsed ft mode esr instmments have appeared beginning in the mid-1980s. These collect digitized time-domain spectra which may be processed into the frequency domain as are nmr data. Pulse durations are much shorter than in nmr with typical 90° times of 8—20 ns. 

Ephedrine, which is not a catecholamine, has weak oral activity as a bronchodilator and although it has some direct action at adrenergic receptors, its predominant mode of action is by displacing norepinephrine from storage vesicules. 2"Agonists which are in use or are under investigation are the result of quests for improved selectivity, retention of potency, oral activity, and longer duration of action. 

Batch reaclors are tanks, usually provided with agitation and some mode of heat transfer to maintain temperature within a desirable range. They are primarily employed for relatively slow reactions of several hours duration, since the downtime for filling and emptying large equipment may be an hour or so. Agitation maintains uniformity and improves heat transfer. Modes of heat transfer are illustrated in Figs. 23-1 and 23-2. 

Anions of another group were derivatized with formation of gaseous chemiluminescing species. Chemical reaction - gas extraction has been used with chemiluminescence detection in the stream of canier gas in on-line mode. Rate of a number of reactions has been studied as well as kinetic curves of extraction of gaseous products. Highly sensitive and rapid hybrid procedures have been developed for the determination of lO, BrO, CIO, CIO, NO,, N03, CrO, CIO, Br, T, S, 803 with detection limits at the level of pg/L, duration of analysis 3 min. 

Method Duration Logistics Mode of action Specificity Sensitivity Suitable for screening... 

Emergency notification should include chemical name and identification of the chemical by number estimation of quantity released time and duration of release mode of release (air, water, or soil) known health risks associated with the emergency applicable precautions and name and phone number of a contact person. All emergency notifications require a written follow-up as soon as possible [2]. 

Two failure modes were considered in the study. The first is failure to start in addition to unplanned demands this includes both fast start tests and slow start tests. The failure to run mode includes all failures occurring from the time when load was applied to the DG until the diesel is no longer needed or until the end of the running duration required by technical specifications. 

The recommended initial step is to determine the duration of the study period for the analysis by first defining a start date. The end date is determined by the maintenance records. For computerized systems, the last update of the overall system provides the end date. For manual systems, it may be necessary to define an end date to accommodate the lag time in updating records. The start and end dates define the maximum calendar time that a piece of equipment is available for service. The operating time for this equipment will be equal to or less than the calendar period, depending on plant operations and the equipment s operating mode. 

WirkungS Azt, /. kind of action mode of acting mode of operation, -bereich, m. range of action or effect, effective range, -bombe, /. demolition bomb, high-capacity bomb, -dauer, /. period (or duration) of action or effect. 

Higher-speed machines may be designed to operate between the first and second, or second and third, critical speeds of the rotor assembly. As these machines accelerate through the resonant zones or critical speeds, their natural frequency is momentarily excited. As long as the ramp rate limits the duration of excitation, this mode of operation is acceptable. However, care must be taken to ensure that the transient time through the resonant zone is as short as possible. 

The practical difficulties are considerable These include the recording of realtime events and minimization of the duration of the laser pulse. Special mode-locked lasers are used to generate the abrupt pulses needed, and optical delays can use the velocity of light to provide the timing. 

Fundamental tothis strategy isaprocedurefordassificationofdevicesintooneoffour categories classes I, Ila, I Ib or 111. Manufacturers must classify their devices according to criteria and rules set out in Annex IX to the directive, as amended. As a first step, the manufacturermustclearlydefinetheintendeduseofthedeviceintermsof (i) degree of invasiveness (ii) mode of action, whether active or passive device (iii) the duration of contact with the patient and (iv) impact on the body, local versus systemic effect. 

Duration of contact Invasiveness Mode of action Impact on body... 

In terms of the duration of meetings, a duration of between 60 and 90 minutes is recommended. However, there can sometimes be exceptions where mentoring might take several hours - this is particularly true when the mentor is in coaching mode. ... 

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