scholarly journals Construction and calibration of a streaked optical spectrometer for shock temperature

2020 ◽  
Author(s):  
Erik J. Davies ◽  
Dylan K. Spaulding ◽  
Sarah T. Stewart
Keyword(s):  
Shock Temperature

Return temperature after heat shock affects the production of tetraploids in the yellowtail tetra Astyanax altiparanae

Zygote ◽  
2020 ◽  
pp. 1-5
Author(s):  
Leandro Freitas Martins ◽  
Cleonice Cristina Hilbig ◽  
George Shigueki Yasui ◽  
Paulo Sérgio Monzani ◽  
José Augusto Senhorini ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Heat Shock ◽  
Embryonic Development ◽  
Control Groups ◽  
Temperature Shock ◽  
Future Studies ◽  
Shock Control ◽  
Shock Temperature ◽  
Post Shock ◽  
Basic Biology

Summary The aim of this study was to evaluate different post-shock temperatures for tetraploid induction in the yellowtail tetra Astyanax altiparanae. Newly fertilized eggs were divided into four groups, three were submitted to heat shock (40°C for 2 min) at 24 min post-fertilization (mpf) and another group remained without shock (control). Groups submitted to temperature shock were further separated at the following temperatures: 22°C, 26°C and 28°C. Survival among embryonic development was counted and at hatching the ploidy was analyzed by flow cytometry. The results showed that the post-shock temperature affects the parameters analyzed and, therefore, must be considered for optimization of the production of tetraploid in A. altiparanae. Those data are innovative and could be used in future studies of basic biology in this species.

scholarly journals Estimate of Plasma Temperatures Across a CME-Driven Shock from a Comparison Between EUV and Radio Data

Solar Physics ◽  
2020 ◽  
Vol 295 (9) ◽  
Author(s):  
Federica Frassati ◽  
Salvatore Mancuso ◽  
Alessandro Bemporad
Keyword(s):  
Shock Wave ◽  
Compression Ratio ◽  
Emission Measure ◽  
Type Ii ◽  
Solar Dynamics Observatory ◽  
Radio Data ◽  
Shock Temperature ◽  
Post Shock ◽  
Dem Analysis ◽  
Solar Dynamics

Abstract In this work, we analyze the evolution of an EUV wave front associated with a solar eruption that occurred on 30 October 2014, with the aim of investigating, through differential emission measure (DEM) analysis, the physical properties of the plasma compressed and heated by the accompanying shock wave. The EUV wave was observed by the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) and was accompanied by the detection of a metric Type II burst observed by ground-based radio spectrographs. The EUV signature of the shock wave was also detected in two of the AIA channels centered at 193 Å and 211 Å as an EUV intensity enhancement propagating ahead of the associated CME. The density compression ratio $X$ X of the shock as inferred from the analysis of the EUV data is $X \approx 1.23$ X ≈ 1.23 , in agreement with independent estimates obtained from the analysis of the Type II band-splitting of the radio data and inferred by adopting the upstream–downstream interpretation. By applying the Rankine–Hugoniot jump conditions under the hypothesis of a perpendicular shock, we also estimate the temperature ratio as $T_{\mathrm{D}}/T_{\mathrm{U}} \approx 1.55$ T D / T U ≈ 1.55 and the post-shock temperature as $T_{\mathrm{D}}\approx 2.75$ T D ≈ 2.75 MK. The modest compression ratio and temperature jump derived from the EUV analysis at the shock passage are typical of weak coronal shocks.

Calculation of the shock temperature of moderately porous graphites

Carbon ◽  
2016 ◽  
Vol 103 ◽  
pp. 464-472 ◽  
Author(s):  
E. Bourasseau ◽  
N. Pineau ◽  
J.-B. Maillet ◽  
V. Dubois
Keyword(s):  
Shock Temperature

scholarly journals Effect of Bentonite on the Pelleting Properties of Iron Concentrate

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Hao Liu ◽  
Bing Xie ◽  
Yue-lin Qin
Keyword(s):  
Water Absorption ◽  
Chemical Properties ◽  
Poor Quality ◽  
Physical And Chemical Properties ◽  
Iron Concentrate ◽  
Green Ball ◽  
Shock Temperature ◽  
Physical And Chemical ◽  
And Chemical Properties

The physical and chemical properties such as particle size, montmorillonite content, swelling degree, water absorption, and blue absorption of A, B, and C bentonites were studied under laboratory conditions. The effects of adding different quality and different proportion of bentonite on falling strength, compression strength, and shock temperature of green pellet were investigated. The experimental results show that the montmorillonite content, water absorption, and methylene blue absorption of bentonite-B are the highest. And the quality of bentonite-B is the best, followed by bentonite-C and bentonite-A poor quality. When the amount of bentonite-B reduced from 1.5% to 1.0%, the strength of green pellets and the shock temperature both decrease. As the same proportion of A, B, and C bentonites, the green-ball strength and shock temperature are as follows: bentonite-A > bentonite-B > bentonite-C.

Sign in / Sign up

Export Citation Format

Share Document