The oxidation of vanadium in the temperature range 700°–1000°C: The non-linear rate law

1967 ◽  
Vol 12 (4) ◽  
pp. 318-325 ◽  
Author(s):  
W.R. Price ◽  
S.J. Kennett ◽  
J. Stringer
Keyword(s):  
Linear Rate ◽  
Rate Law ◽  
Temperature Range ◽  
Non Linear

scholarly journals Kinetics of MgWO4 Formation in the Solid State Reaction between MgO and WO3

1976 ◽  
Vol 31 (6) ◽  
pp. 619-621 ◽  
Author(s):  
Giorgio Flor ◽  
Riccardo Riccardi
Keyword(s):  
Solid State ◽  
Kinetic Study ◽  
Single Crystals ◽  
Solid State Reaction ◽  
Argon Atmosphere ◽  
Conductivity Measurements ◽  
Linear Rate ◽  
Rate Law ◽  
Temperature Range ◽  
Kinetics Of

The solid state reaction of MgWO4 formation from MgO (single crystals) and WO3 was investigated in the temperature range 800 - 985 °C under both air and argon atmosphere.The techniques employed for the kinetic study (contact and thermogravimetric methods) allowed to point out that the process follows the linear rate law in the early stages and the parabolic one in the subsequent stages.From inert marker experiments, kinetic determinations under the two different atmospheres and conductivity measurements, it was possible to state that the reaction is governed by a cation counterdiffusion mechanism

Non-linear ultrasonic and viscoelastic properties of gelatine investigated in the temperature range of 30 °C–60 °C

2021 ◽  
Vol 33 (2) ◽  
pp. 022002
Author(s):  
Jan Dirk Heyns ◽  
Esam T. Ahmed Mohamed ◽  
Nico F. Declercq
Keyword(s):  
Viscoelastic Properties ◽  
Temperature Range ◽  
Non Linear

Linear rate law for the decay of the excess surface area of a coalescing solid particle

1994 ◽  
Vol 49 (5) ◽  
pp. 3622-3624 ◽  
Author(s):  
Sheldon K. Friedlander ◽  
Murray K. Wu
Keyword(s):  
Surface Area ◽  
Solid Particle ◽  
Linear Rate ◽  
Rate Law ◽  
Excess Surface

scholarly journals Three-dimensional FE2 method for the simulation of non-linear, rate-dependent response of composite structures

2018 ◽  
Vol 193 ◽  
pp. 165-179 ◽  
Author(s):  
E. Tikarrouchine ◽  
G. Chatzigeorgiou ◽  
F. Praud ◽  
B. Piotrowski ◽  
Y. Chemisky ◽  
...  
Keyword(s):  
Composite Structures ◽  
Three Dimensional ◽  
Linear Rate ◽  
Rate Dependent ◽  
Non Linear

scholarly journals Non-linear effects in the oscillating drop method for viscosity measurements

2020 ◽  
Vol 48 (3) ◽  
pp. 253-277 ◽  
Author(s):  
RAINER K. WUNDERLICH ◽  
MARKUS MOHR
Keyword(s):  
Time Constant ◽  
Space Station ◽  
Surface Oscillation ◽  
Temperature Dependent Viscosity ◽  
Temperature Range ◽  
Drop Method ◽  
Sample Shape ◽  
Decay Times ◽  
Non Linear ◽  
Oscillation Decay

The contribution of non-linear fluid flow effects to the damping of surface oscillations in the oscillation drop method was investigated in a series of experiments in an electromagnetic levitation device installed on the International Space station, ISS-EML. In order to correctly evaluate the damping time constant from measured surface oscillation decays the effect of a modulated signal response on measured surface oscillation decay curves was investigated. It could be shown that various experimentally observed signal patterns could be well represented by a modulated response. The physical origin of such modulations is seen in rotation and precession. Over a temperature range of 220 K covered by different surface oscillation excitation pulses with an initial sample shape deformation of 5 – 10% the amplitude of surface oscillations as a function of time could be very well represented by a Lamb type damping with a temperature dependent viscosity. A direct comparison of surface oscillation decay times measured in the same temperature range but for different oscillation amplitudes showed no non-linear contribution to the damping time constant with a confidence level better 10%.

scholarly journals The association between diurnal temperature range and childhood hand, foot, and mouth disease: a distributed lag non-linear analysis

2017 ◽  
Vol 145 (15) ◽  
pp. 3264-3273 ◽  
Author(s):  
FEI YIN ◽  
YUE MA ◽  
XING ZHAO ◽  
QIANG LV ◽  
YAQIONG LIU ◽  
...  
Keyword(s):  
Diurnal Temperature Range ◽  
Foot And Mouth Disease ◽  
Sichuan Province ◽  
Mouth Disease ◽  
Diurnal Temperature ◽  
Temperature Range ◽  
Distributed Lag ◽  
Risk Estimates ◽  
Non Linear ◽  
Foot And Mouth

SUMMARYIn recent years, hand, foot, and mouth disease (HFMD) has been increasingly recognized as a critical challenge to disease control and prevention in China. Previous studies have found that meteorological factors such as mean temperature and relative humidity were associated with HFMD. However, little is known about whether the diurnal temperature range (DTR) has any impact on HFMD. This study aimed to quantify the impact of DTR on childhood HFMD in 18 cities in Sichuan Province. A distributed lag non-linear model was adopted to explore the temporal lagged association of daily temperature with age-, gender- and pathogen-specific HFMD. A total of 290 123 HFMD cases aged 0–14 years were reported in the 18 cities in Sichuan Province. The DTR–HFMD relationships were non-linear in all subgroups. Children aged 6–14 years and male children were more vulnerable to the temperature changes. Large DTR had the higher risk estimates of HFMD incidence in cases of EV71 infection, while small DTR had the higher risk estimates of HFMD incidence in cases of CV-A16 infection. Our study suggested that DTR played an important role in the transmission of HFMD with non-linear and delayed effects.

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