CONCERNING THE EXISTENCE OF THE SO-CALLED HEATS OF TRANSFER (Q*VALUES) IN PELTIER HEATS

1933 ◽  
Vol 55 (2) ◽  
pp. 853-855 ◽  
Author(s):  
E. Lange ◽  
Th. Hesse
Keyword(s):  
Heats Of Transfer ◽  
Q Values

Optimum Q-values for the 58Ni(160O,12C) reaction well above the Coulomb barrier

1975 ◽  
Vol 244 (1) ◽  
pp. 147-156 ◽  
Author(s):  
J. Wilczynski ◽  
K. Siwek-Wilczynska ◽  
J.S. Larsen ◽  
J.C. Acquadro ◽  
P.R. Christensen
Keyword(s):  
Coulomb Barrier ◽  
Q Values

MOCVD of Alkaline Earth Titanates for Integrated RF Capacitors

1997 ◽  
Vol 493 ◽  
Author(s):  
G. T. Stauf ◽  
C. Seegel ◽  
R. K. Watts ◽  
H. M. O'Bryan
Keyword(s):  
Vapor Deposition ◽  
Alkaline Earth ◽  
Metalorganic Chemical Vapor Deposition ◽  
Chemical Vapor ◽  
High Permittivity ◽  
Wireless Applications ◽  
Switched Capacitor Filters ◽  
Q Factors ◽  
Q Values ◽  
Thin Film Devices

ABSTRACTThe high permittivity of BaSrTiO3 (BST) gives it the potential to replace discrete “passive” capacitors used in portable and wireless applications with integrated capacitors. Bringing thin film devices directly onto Si and GaAs chips shortens lead length and improves overall circuit Q values by reducing inductance, important at RF frequencies. A metalorganic chemical vapor deposition (MOCVD) process has been developed for this purpose. By modifying the basic BST stoichiometry, we have demonstrated charge storage densities up to 3,000 nF/cm2 with leakages below 10−8 A/cm2 at 3 V, and second order dielectric nonlinearities below 100 ppm/V2. For stoichiometric BST, Q factors are as high as 500 at kHz frequencies, and evidence suggests that low losses can be retained up through the L and S microwave bands (1 -4 GHz) in the modified titanates. These properties make alkaline earth titanate films suitable for use in decoupling and bypass capacitors, as well as switched capacitor filters.

scholarly journals β -decay Q values among the A=50 Ti-V-Cr isobaric triplet and atomic masses of Ti46,47,49,50,V50,51 , and Cr50,52–54

2017 ◽  
Vol 96 (4) ◽  
Author(s):  
R. M. E. B. Kandegedara ◽  
G. Bollen ◽  
M. Eibach ◽  
N. D. Gamage ◽  
K. Gulyuz ◽  
...  
Keyword(s):  
Β Decay ◽  
Atomic Masses ◽  
Q Values

scholarly journals Temporal and Spatial Heterogeneity of PM2.5 Related to Meteorological and Socioeconomic Factors across China during 2000–2018

2022 ◽  
Vol 19 (2) ◽  
pp. 707
Author(s):  
Xiangxue Zhang ◽  
Changxiu Cheng
Keyword(s):  
Socioeconomic Factors ◽  
Southern China ◽  
Yangtze River Delta ◽  
Socioeconomic Factor ◽  
Factors Affecting ◽  
The North ◽  
The Status ◽  
Risk Areas ◽  
Future Direction ◽  
Q Values

In recent years, air pollution caused by PM2.5 in China has become increasingly severe. This study applied a Bayesian space–time hierarchy model to reveal the spatiotemporal heterogeneity of the PM2.5 concentrations in China. In addition, the relationship between meteorological and socioeconomic factors and their interaction with PM2.5 during 2000–2018 was investigated based on the GeoDetector model. Results suggested that the concentration of PM2.5 across China first increased and then decreased between 2000 and 2018. Geographically, the North China Plain and the Yangtze River Delta were high PM2.5 pollution areas, while Northeast and Southwest China are regarded as low-risk areas for PM2.5 pollution. Meanwhile, in Northern and Southern China, the population density was the most important socioeconomic factor affecting PM2.5 with q values of 0.62 and 0.66, respectively; the main meteorological factors affecting PM2.5 were air temperature and vapor pressure, with q values of 0.64 and 0.68, respectively. These results are conducive to our in-depth understanding of the status of PM2.5 pollution in China and provide an important reference for the future direction of PM2.5 pollution control.

scholarly journals Analysis of Seismic Signals Generated by Vehicle Traffic with Application to Derivation of Subsurface Q-Values

2021 ◽  
Author(s):  
Haoran Meng ◽  
Yehuda Ben-Zion ◽  
Christopher W. Johnson
Keyword(s):  
Surface Waves ◽  
Anthropogenic Sources ◽  
Correct Identification ◽  
Vehicle Traffic ◽  
Seismic Properties ◽  
Shallow Subsurface ◽  
San Jacinto Fault ◽  
San Jacinto Fault Zone ◽  
Estimate Frequency ◽  
Q Values

Abstract Correct identification and modeling of anthropogenic sources of ground motion are of considerable importance for many studies, including detection of small earthquakes and imaging seismic properties below the surface. To understand signals generated by common vehicle traffic, we use seismic data recorded by closely spaced geophones normal to roads at two sites on San Jacinto fault zone. To quantify the spatiotemporal and frequency variations of the recorded ground motions, we develop a simple analytical solution accounting for propagation and attenuation of surface waves. The model reproduces well-observed bell-shaped spectrograms of car signals recorded by geophones close to roads, and it can be used to estimate frequency-dependent Q-values of the subsurface materials. The data analysis indicates Q-values of 3–40, for frequencies up to 150 Hz for road-receiver paths at the two examined sites. The derived Q-values are consistent with attenuation factors of surface waves previously obtained with other methods. The analytical results and analysis procedure provide a highly efficient method for deriving Q-values of shallow subsurface materials.

scholarly journals The Effect of Silicon and The Status of Phenolic Compounds On The Germination of Cowpea (Vigna unguiculata L. Walp.) Under Temperature Stress

2021 ◽  
Vol 5 (4) ◽  
pp. 870-880
Author(s):  
İlkay YAVAŞ ◽  
Burcu KESER
Keyword(s):  
Elevated Temperature ◽  
Phenolic Compounds ◽  
Seedling Growth ◽  
Germination Rate ◽  
Second Phase ◽  
The Status ◽  
Ameliorative Effect ◽  
Positive Effect ◽  
Q Values ◽  
Good Germination

The aim of the study was to evaluate the elevated temperature on germination and seedling growth and the ameliorative effect of silicon on the phenolic compounds of black-eyed cowpea. The seeds were allowed to germinate at 30 (control), 36 and 44°C temperatures, under controlled conditions, silicons were with concentrations of 0.0 (control) and 1.5 mM. In the second phase of the experiment, some of the seeds were grown in plastic cups with sieved soil at 30 °C, 36 °C and 44 °C for phenolic compounds. Among the temperature treatments, plant deaths occurred at 44 °C. The raise in temperature importantly reduced germination and related traits. Except for SL, the seeds showed good germination at 30 °C after Si application. In high temperatures, silicon applications had a positive effect on germination and seedling growth, except for the germination rate. Results showed that an increase in GA, PA, Q, CAM, CA, PCA, SA, VA, CAF as temperatures increased. But chlorogenic acid and Q values were higher at 30 °C. This study clearly observed that the growth of cowpea seedlings decreased with temperature increase, but silicon attenuated these effects.

scholarly journals Atomic Excitation Effects on Nuclear Resonances and Q Values

1979 ◽  
Vol 26 (1) ◽  
pp. 1223-1224 ◽  
Author(s):  
J. M. Feagin ◽  
E. Merzbacher ◽  
W. J. Thompson
Keyword(s):  
Atomic Excitation ◽  
Q Values

Variation of Calculated Organ Dose Equivalents and Some Operational Quantities with Q Values for Photons

1989 ◽  
Vol 28 (1-2) ◽  
pp. 37-40
Author(s):  
M. Zankl ◽  
N. Petoussi ◽  
R. Veit ◽  
G. Drexler
Keyword(s):  
Organ Dose ◽  
Operational Quantities ◽  
Q Values
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