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  • 4th European Conference of the International Federation for Medical and Biological Engineering
    Even if the trend is to use porous materials [4], we demonstrated a change of 2 orders … Combined with a classical NTC (negative temperature coefficient) thermistor , the ambition of our system is to improve comfort and reliability of patient assessment during sleep. The key element in our sensor interface is the insertion of a microsensor in an oscillating circuit, translating the capacitance or temperature change to an oscillation frequency shift.
  • An autonomous battery-less sensor module powered by piezoelectric energy harvesting with RF transmission of multiple measurement signals
    Figure 11 clearly shows an initial settling trend for the first periods in the frame, most likely … Afterward, a resistive temperature sensor (NTC thermistor Epcos K164/10k) and a variable capacitor were inserted respectively as sensor 1 (RS) and sensor 2 (CS). . The . resulting frequency fOSC1 was about 30 kHz at 27.5 ◦ C, and the frequency fOSC2 was …
  • Temporal trends in N2O flux dynamics in a Danish wetland – effects of plant‐mediated gas transport of N2O and O2 following changes in water level and soil mine...
    … was measured continuously on a 10 min temporal resolution by a sonic range sensor (SR50a; Campbell Sci … Soil temperature and soil moisture were measured in the soil profile by zero-off corrected thermistors (Campbell Scien- TEMPORAL TRENDS IN N2 O FLUX DYNAMICS IN A DANISH WETLAND 211 … calibrated soil moisture impedance probes (Theta Probe ML2x; Delta-T Devices, Cambridge, UK) inserted horizontally in 2–10 …
  • Water in the stems of sessile oak ( Quercus petraea ) assessed by computer tomography with concurrent measurements of sap velocity and ultrasound emission
    All the measurement days were characterized by sunny summer weather and similar daily trends of air tempera- ture and humidity (data not shown). … up of four heating devices penetrating the xylem orthogonally to a maximum depth of 35 mm beneath the cambium at four positions on the trunk circumference, and two thermistor probes (1-8 mm … … of the four quadrants, inserted (5 to 25 mm … … according to Marshall (1958), and corrected to take account of the effect of sensor implantation wounds (Swanson …
  • Comparison of Air Temperature Calibrations
    The Thunder 2500 humidity generator with a copper insert at MIRS/UL/FE-LMK provides a stable and homogeneous temperature field in a small volume for calibrating air temperature sensors . Five thermistors and industrial PRTs were used to determine the temperature in the copper insert and the … … of very different kinds as air thermometers, we can conclude that the linear trend in system b …
  • Modern Engineering for Design of Liquid-Propellant Rocket Engines > Subject Index
    … Types 212-215, 241 Sealants Kel-F 64 Teflon 64 Secondary injection 224 Sensor evaluation 261 Servovalve … … 121, 148 SSMEC 279 Stage separation 370 Staged combustion cycle 34, 42 Stagnation temperature 140 Stainless steel … Tank-head start 160, 162 Tanks (see "Propellant tanks") Tapole gases 58, 160 Teflon (see also "Materials") 64 Textron HR 252 TEE Teflon 242 Thermistor 263 Thermocouple characteristics 262 Thermodynamic suppression … … TSH) 176 Thoma parameter 170 Throat Inserts 102 Size 72 Throttling … … Is) 24 Total pressure ratio 8 Volume 71 Wall design 91, 96 Weight trends 42 Thrust-time …
  • Environmental controls on the photosynthesis and respiration of a boreal lichen woodland: a growing season of whole-ecosystem exchange measurements by eddy cor...
    Soil tem- perature was monitored at 5 cm depth using a thermistor inserted into the organic layer underneath the lichen mat. sensors , including those responsible for monitoring the physical environment, and a suite of pressure and flow sensors … Prior to the flux calculation, the linear trend in CO2 was subtracted from each 30-min time …
  • Parental responses to unexpectedly cool eggs in Nazca boobies Sula granti
    As a body, these results indicate close regulation of egg temperature, and in particular, declining trends in egg temperature at any point in incubation are not typical. Most studies cited have recorded temperature by either inserting a thermistor or thermocouple into real or artificial eggs, but the trailing wire restricted the movement of the eggs in these cases. The eggs could be turned by the parent, allowing the sensor to float near the top of …
  • Nursing and medical staff knowledge regarding the monitoring and management of accidental or exposure hypothermia in adult major trauma patients
    Direct contact tympanic temperature measurement is possible by way of attaching a thermo-coupling sensor directly on the tympanic membrane. provides the ability to measureTc continuously, are useful in observing temperature trends over time and provide a good indicator of the efficacy of rewarming attempts in hypothermic patients.33 Most trauma patients require the insertion of an indwelling urethral catheter to measure … Indwelling urethral catheters with metal thermistor devices are not safe for use in magnetic resonant imagery environments.
  • Electrical endogenous heating of insect muscles for flight control
    Insertions were made under anesthesia through the small holes incised with a surgical knife on the thoracic … … to a semiconductor characterization system (Keithley™ 4200) after emergence of adult insects where temperature was read by … First, natural temperature trends were recorded through the thermistors during preflight warm-up and flight activity of the moth. … modeled as a thermal system with the indicated thermal model parameters (heater and sensor elements are illustrated …