Novel Cryogenic Heaters: Sputter Deposited Cermet Materials with Low Temperature Coefficients of Resistivity

2004 ◽  
Author(s):  
C. J. Yeager
Keyword(s):  
Low Temperature ◽  
Temperature Coefficients ◽  
Sputter Deposited ◽  
Cermet Materials

scholarly journals THE EFFECT OF RENNIN UPON CASEIN

1927 ◽  
Vol 10 (6) ◽  
pp. 987-1005 ◽  
Author(s):  
Vladimir Pertzoff
Keyword(s):  
Low Temperature ◽  
Free Enzyme ◽  
The Other ◽  
Temperature Coefficients ◽  
Temperature Levels ◽  
Two Temperature

1. The preparation and purification of paracasein was described and certain criteria for the absence of free enzyme provided for. 2. The solubility of purified paracasein in water at low temperature was studied, and found practically identical with the solubility of casein. 3. The capacity of paracasein to bind base was investigated by means of its solubility in NaOH at 5° and at 23° ± 2°C., and found to be distinctly different from that of casein. 4. At these two temperature levels paracasein had a 1.5 greater capacity to bind base than casein. The equivalent combining weights of paracasein and casein were found to stand each to the other, apapproximately, as 2 to 3. 5. This relationship suggested that the temperature coefficients of the solubility of paracasein and casein in NaOH are identical. 6. This evidence indicates that paracasein is a modification of casein, distinguishable by physicochemical means.

scholarly journals Low temperature sputter-deposited ZnO films with enhanced Hall mobility using excimer laser post-processing

2017 ◽  
Vol 50 (48) ◽  
pp. 485306 ◽  
Author(s):  
C Tsakonas ◽  
V L Kuznetsov ◽  
W M Cranton ◽  
N Kalfagiannis ◽  
K M Abusabee ◽  
...  
Keyword(s):  
Low Temperature ◽  
Excimer Laser ◽  
Hall Mobility ◽  
Zno Films ◽  
Post Processing ◽  
Sputter Deposited

Low Temperature Crystallization of Sputter-Deposited TiNi Films

2012 ◽  
Vol 78 ◽  
pp. 81-86 ◽  
Author(s):  
Yoichi Kishi ◽  
Noriaki Ikenaga ◽  
Noriyuki Sakudo ◽  
Zenjiro Yajima
Keyword(s):  
Low Temperature ◽  
Substrate Temperature ◽  
Ion Irradiation ◽  
Electrical Power ◽  
Annealing Treatment ◽  
Rf Magnetron Sputtering ◽  
X Ray Diffraction ◽  
Diffraction Profile ◽  
Double Beam ◽  
Sputter Deposited

We have found that deposited film can be crystallized without the post-annealing treatment but with the simultaneous ion-irradiation during sputter-deposition at very low substrate temperature. The present paper reviews the low temperature crystallized TiNi films deposited by the above technique. An RF magnetron sputtering apparatus equipped with separate confocal sources as well as with a heating and ion-irradiating system for substrates was used to make the films crystalline. Without using the ion-irradiating system, the films deposited on ambient-temperature substrate have been amorphous. However, crystallized film is deposited even at 353 K of substrate temperature with using the system. Appropriate ion-irradiation is considered to be help to crystallize the film at low substrate temperature. Broad and doublet X-ray diffraction profile of the film, which was diffracted from B19’ and/or R phase, was recorded between 42 degree to 45 degree in 2 theta. The crystallized film deposited on a polyimide sheet was cut into the shape of a double-beam cantilever and the ends of the two beams were connected to an electrical power supply. The cantilever shows a repeatable two-way motion by electrical cycle of 0.1 Hz at room temperature.

The Master Equation for the Dissociation of a Dilute Diatomic Gas. X. How Rotation Causes Low Arrhenius Temperature Coefficients

1973 ◽  
Vol 51 (18) ◽  
pp. 3152-3155 ◽  
Author(s):  
Huw O. Pritchard
Keyword(s):  
Low Temperature ◽  
Temperature Coefficient ◽  
Rate Constants ◽  
Recombination Rate ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
Equilibrium Form ◽  
Temperature Coefficients ◽  
Recombination Rate Constant ◽  
Arrhenius Temperature

It is shown that previously calculated nonequilibrium rate constants for the dissociation of H2 and D2 appear to approach a rotationally averaged equilibrium expression at low temperature. This equilibrium form of the rate expression itself has an Arrhenius temperature coefficient for dissociation which is significantly less than the dissociation energy, and the corresponding recombination rate constant has a negative temperature coefficient. The reasons for this are explained.

Structures, Dielectric Properties and Luminescence Properties of Nb Doped Li2TiO3 Solid Solution Ceramics

2017 ◽  
Vol 748 ◽  
pp. 137-142 ◽  
Author(s):  
Fei Wang ◽  
Chun Feng Yao ◽  
Qun Zeng ◽  
He Zhou ◽  
Zhi Yong Zhou
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Low Temperature ◽  
Solution Method ◽  
Microwave Dielectric Properties ◽  
Luminescence Properties ◽  
Monoclinic Structure ◽  
Small Temperature ◽  
Temperature Coefficients ◽  
Microwave Dielectric

In this article, the low-firing Li2+xNb3xTi1-4xO3(x = 0.01, 0.02, 0.04, 0.06) ceramics with monoclinic structure have been obtained by the traditional solid solution method and their microwave dielectric properties were investigated in detail. The ceramics were finely densified at lower temperatures around 1100 °C and demonstrated favorable dielectric performances including relatively low permittivities (εr) ranging from 19 to 24, high Q×f values up to 60,000 GHz (fres = 7.89GHz) and small temperature coefficients of the resonate frequency (for x = 0.02, τf = 10.4 ppm/ °C; x = 0.06, τf = -11.5 ppm/ °C). Furthermore, the ceramics could be densified at around 900°C with adding low-amount of B2O3. Especially, the 1wt.% B2O3-doped Li2+xNb3xTi1-4xO3 (x = 0.06) ceramics was sintered well-densified at 900°C and presented good microwave dielectric properties with εr ∼ 22.2, Q×f ∼ 44,000 GHz. In addition, these ceramics have luminescence properties, which indicated that the ceramics would be applied in LTCC and/or luminescence applications as new luminescence LTCC (low temperature co-fired ceramics) materials.

2:17 type SmCo magnets with low temperature coefficients of remanence and coercivity

2019 ◽  
Vol 473 ◽  
pp. 376-380 ◽  
Author(s):  
Lei Liu ◽  
Zhuang Liu ◽  
Xin Zhang ◽  
Chaoyue Zhang ◽  
Tianyi Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Coefficients
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