Results 21 to 30 of about 957,753 (245)

Stability of time-periodic temperature fields [PDF]

Quarterly of Applied Mathematics, 1987
The energy method developed by Joseph [4], Davis [2], and Homsy [3] is applied to the time-periodic temperature fields considered by Yih and Li [11] to obtain Rayleigh numbers below which the fluid is stable. This is done to see how far the Rayleigh numbers so determined fall below the critical Rayleigh numbers, above which the flow is unstable, as ...
Yih, Chia-Shun, Shi, Jinsong
openaire   +1 more source

Evaluation of Three Soil Moisture Profile Sensors Using Laboratory and Field Experiments

Sensors, 2023
Soil moisture profile sensors (SMPSs) have a high potential for climate-smart agriculture due to their easy handling and ability to perform simultaneous measurements at different depths.
Felix Nieberding, Johan Alexander Huisman, Christof Huebner, Bernd Schilling, Ansgar Weuthen, Heye Reemt Bogena   +5 more
doaj   +1 more source

TEMPERATURE DEPENDENCE OF OPTICAL TRANSMISSION OF GERMANIUM SINGLE CRYSTALS

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
In this work, we investigated optical transmission in the wavelength range of 2-14 µm of low-resistance germanium crystals (1-3 Ω·cm) doped with donor and acceptor impurities in the temperature range from 86K to 523K.
A.I. Ivanova, K.A. Marinicheva, S.A. Tret'yakov, A.M. Ivanov, S.V. Molchanov, I.A. Kaplunov   +5 more
doaj   +1 more source

A 1.43-nW 1.3-kHz Resistor-Less Relaxation Oscillator With 67.3-ppm/ ° C Stability

IEEE Access
This paper introduces a novel non-RC, leakage-based relaxation oscillator designed as a timer in ultra-low-power (ULP) applications. The proposed oscillator structure is created by stacking a source degeneration and a common-gate amplifier within a ...
Jiho Lee, Jae-Yoon Sim
doaj   +1 more source

The Effect of Nb₂O₅ Precursor on KNN-Based Ceramics’ Piezoelectricity and Strain Temperature Stability

Crystals, 2022
The performance of potassium sodium niobate ((K, Na) NbO3, KNN)-based lead-free piezoelectric ceramics has significantly improved over the past decade. However, the performance bottlenecks of KNN-based ceramics cannot be ignored.
Ruilin Han, Tingting Gao, Yining Xie, Lixu Xie, Yuan Cheng, Xu Li, Hao Chen, Jie Xing, Jianguo Zhu   +8 more
doaj   +1 more source

A Near-Infrared CMOS Silicon Avalanche Photodetector with Ultra-Low Temperature Coefficient of Breakdown Voltage

Micromachines, 2021
Silicon avalanche photodetector (APD) plays a very important role in near-infrared light detection due to its linear controllable gain and attractive manufacturing cost. In this paper, a silicon APD with punch-through structure is designed and fabricated
Daoqun Liu, Tingting Li, Bo Tang, Peng Zhang, Wenwu Wang, Manwen Liu, Zhihua Li   +6 more
doaj   +1 more source

Distinct Chemistries Define the Diverse Biological Effects of Plasma Activated Water Generated with Spark and Glow Plasma Discharges

Applied Sciences, 2021
The spread of multidrug-resistant bacteria poses a significant threat to human health. Plasma activated liquids (PAL) could be a promising alternative for microbial decontamination, where different PAL can possess diverse antimicrobial efficacies and ...
Evanthia Tsoukou, Maxime Delit, Louise Treint, Paula Bourke, Daniela Boehm   +4 more
doaj   +1 more source

Temperature Stability of the Sky Quality Meter [PDF]

Sensors, 2013
The stability of radiance measurements taken by the Sky Quality Meter (SQM)was tested under rapidly changing temperature conditions during exposure to a stable lightfield in the laboratory. The reported radiance was found to be negatively correlated withtemperature, but remained within 7% of the initial reported radiance over a temperaturerange of -15 °
Schnitt, Sabrina, Ruhtz, Thomas, Fischer, Jürgen, Hölker, Franz, Kyba, Christopher C. M.   +4 more
openaire   +3 more sources

Quick Response Circulating Water Cooling of ±3 mK Using Dynamic Thermal Filtering

Applied Sciences, 2020
An enhanced circulating cooling water (CCW) machine is developed to simultaneously achieve high temperature stability and dynamic performance of CCW temperature control.
Yesheng Lu, Junning Cui, Jiubin Tan, Xingyuan Bian   +3 more
doaj   +1 more source

Configurational Temperature of Charge-Stabilized Colloidal Monolayers [PDF]

Physical Review Letters, 2004
Recent theoretical advances show that the temperature of a system in equilibriumcan be measured from static snapshots of its constituents' instantaneous configurations, withoutregard to their dynamics. We report the first measurements of the configurational temperature in an experimental system.
Han, Yilong, Grier, David G.
openaire   +4 more sources