Comparison of High‐ and Low‐Temperature Data for the Cl2⇋2Cl Reaction

1970 ◽  
Vol 53 (8) ◽  
pp. 3318-3319 ◽  
Author(s):  
George Burns ◽  
R. J. Browne
Keyword(s):  
Low Temperature ◽  
Temperature Data

Depth and seasonal biases in organic temperature proxies: a modelling study

2021 ◽  
Author(s):  
Devika Varma ◽  
Gert-Jan Reichart ◽  
Stefan Schouten
Keyword(s):  
Low Temperature ◽  
Probability Density Functions ◽  
Temperature Data ◽  
Sea Surface ◽  
Density Functions ◽  
High Latitudes ◽  
Mean Sea Surface ◽  
Temperature Signal ◽  
Instrumental Temperature ◽  
Nutrient Data

<p>For more than a decade TEX<sub>86</sub> and U<sup>K’</sup><sub>37</sub>, derived from ratios of biomarker lipids have widely been used as organic paleotemperature proxies. Yet, these proxies, especially TEX<sub>86</sub>, have several uncertainties associated with factors such as depth and seasonal biases which are complicating its application as an annual mean sea-surface temperature (SST) proxy. To constrain this impact, we performed a relatively simple modelling exercise where we use instrumental temperature and nutrient data from 40 locations across the globe to predict theoretical proxy values and compare them with measured core-top proxy values.</p><p>The model first uses instrumental nutrient and temperature data, and probability density functions to predict the theoretical depth occurrence of the source organisms of the two proxies. Additionally, seasonal bias was introduced by predicting seasonal occurrences using instrumental nutrient and chlorophyll data. This was used to calculate the depth- and season weighed temperature signal annually deposited in the sediment, which in turn was converted to theoretical proxy values using culture or mesocosm calibrations. This showed, as expected, that depth and seasonal biases introduced scatter in the correlation between theoretical proxy values and annual mean SST but still highly significant for both U<sup>K’</sup><sub>37</sub> (r<sup>2</sup>= 0.96), and TEX<sub>86</sub> (r<sup>2</sup>= 0.77). We find that the theoretical proxy values are much lower than measured proxy value for TEX<sub>86</sub>, which tentatively suggests that TEX<sub>86 </sub>might in fact be coming from shallower depths or that the mesocosm calibration is incorrect. Our model for U<sup>K’</sup><sub>37</sub> results in theoretical values similar to measured values except for low temperature locations. This might suggest an influence of seasonal bias towards more warmer summer seasons which is more pronounced in high latitudes than in tropics.</p>

Low-Temperature Data Remanence Attacks Against Intrinsic SRAM PUFs

2018 ◽  
Author(s):  
Nikolaos Athanasios Anagnostopoulos ◽  
Tolga Arul ◽  
Markus Rosenstihl ◽  
Andre Schaller ◽  
Sebastian Gabmeyer ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Data

Gate stress effect on low temperature data retention characteristics of split-gate flash memories

2005 ◽  
Vol 45 (9-11) ◽  
pp. 1331-1336 ◽  
Author(s):  
Ling-Chang Hu ◽  
An-Chi Kang ◽  
Eric Chen ◽  
J.R. Shih ◽  
Yao-Feng Lin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Data ◽  
Stress Effect ◽  
Data Retention ◽  
Flash Memories ◽  
Retention Characteristics

Perpendicular Magnetoresistance of Microstructured Pillars in Fe/Cr Magnetic Multilayers

1993 ◽  
Vol 313 ◽  
Author(s):  
M.A.M. Gijs ◽  
S.K.J. Lenczowski ◽  
J.B. Giesbers
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Giant Magnetoresistance ◽  
High Vacuum ◽  
Magnetic Multilayers ◽  
Film Plane ◽  
Temperature Data ◽  
Magnetoresistance Effect ◽  
Giant Magnetoresistance Effect

ABSTRACTWe have fabricated pillar-like microstructures of high vacuum sputtered Fe/Cr Magnetic Multilayers and measured the giant magnetoresistance effect in the configuration where the measuring current is perpendicular to the film plane from 4.2 K to 300 K. At 4.2 K we find a magnetoresistance of 108 % for multilayers with a Fe thickness of 3 nm and a Cr thickness of 1 nm. The pronounced temperature dependence of the perpendicular magnetoresistance is studied for samples with different Cr thicknesses and tentatively explained by electron-Magnon scattering. The low-temperature data are compared with existing low-temperáture models.

Generation of low tehmperature series for Ising models with nearest and next nearest neighbor interactions

1976 ◽  
Vol 54 (16) ◽  
pp. 1646-1650 ◽  
Author(s):  
M. Plischke ◽  
C. F. S. Chan
Keyword(s):  
Low Temperature ◽  
Nearest Neighbor ◽  
Tricritical Point ◽  
Ising Models ◽  
Temperature Data ◽  
Temperature Series ◽  
Bcc Lattice ◽  
Special Cases ◽  
Ising Antiferromagnet ◽  
Ferromagnetic Interactions

We have generalized the code method of Sykes et al. and applied it to the Ising model with nearest and next nearest neighbor interactions. On the bcc lattice, we have obtained the first seven low temperature polynomials for arbitrary sign of the interactions. Special cases of this model are the Ising ferromagnet and the Ising antiferromagnet with next nearest neighbor ferromagnetic interactions. The latter system exhibits a tricritical point which we plan to study using our low temperature data and high temperature series to be obtained in the future.

A simple device for increasing the accessibility of reciprocal space in low-temperature area-detector experiments

1995 ◽  
Vol 28 (5) ◽  
pp. 650-650
Author(s):  
M. R. Pressprich ◽  
B.-J. Fransen ◽  
A. Darovsky ◽  
P. Coppens
Keyword(s):  
Low Temperature ◽  
Data Collection ◽  
Temperature Data ◽  
Reciprocal Space ◽  
Simple Device ◽  
Area Detector ◽  
Crystal Orientations ◽  
Oscillation Method ◽  
Temperature Area

A device is described that allows collection of oscillation method data in two different crystal orientations, without remounting of the crystal. Because of its small size, the device can be inserted into a cryostat chamber, and used for low-temperature data collection with area detectors.

Some Aspects of the Nonstoichiometric and Thermodynamic Behavior of the YBa2Cu3Oz System

1989 ◽  
Vol 156 ◽  
Author(s):  
M. Tetenbaum ◽  
L. Curtiss ◽  
B. Czech ◽  
B. Tani ◽  
M. Blander
Keyword(s):  
Low Temperature ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Coulometric Titration ◽  
Temperature Data ◽  
Oxygen Stoichiometry ◽  
Miscibility Gap ◽  
Thermodynamic Behavior ◽  
Partial Pressures ◽  
Titration Technique

ABSTRACTThe nonstoichiometric and thermodynamic behavior of the YBa2Cu3Ox system as a function of oxygen partial pressure and temperature is being investigated by means of a coulometric titration technique. The oxygen content of the superconductor can be varied coulometrically by well-defined small amounts and the equilibrium partial pressures determined from the EMF. The oxygen stoichiometry in YBa2Cu3Ox as a function of oxygen partial pressure shows a change of curvature around x = 6.55–6.75 and an inflection around x ≅ 6.65 at temperatures between 400–500°C. These new low temperature data are consistent with the presence of a miscibility gap at lower temperatures, which is similar to that postulated in several theoretical papers.

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