Thermal properties of lutetium trifluoride at high temperatures

1998 ◽  
Vol 30 (4) ◽  
pp. 479-482 ◽  
Author(s):  
Rashid Khairulin ◽  
Sergei Stankus ◽  
Pavel Tyagel'sky
Keyword(s):  
Thermal Properties ◽  
High Temperatures

Drywall Thermal Properties Exposed to High Temperatures and Fire Condition

2013 ◽  
Vol 62 (1) ◽  
Author(s):  
Md Azree Othuman Mydin
Keyword(s):  
Thermal Properties ◽  
High Temperatures ◽  
Fire Resistance ◽  
Residential Buildings ◽  
Cost Effective ◽  
Standard Fire ◽  
Performance Requirements ◽  
Cost Effective Technique ◽  
Fire Barrier ◽  
In Fire

Drywall is a widespread fire barrier used in house and general building construction. Drywall partitions and ceiling membranes are possibly the most common fire resistant construction approach employed in an extensive range of building types. The utilization of drywall board as prime fire protection of light-flame wood or steel construction is ubiquitous. Drywall board based systems are among those now broadly used, as walls or ceilings and it is principally employed as lining material in light-weight construction, which is a competent and cost effective technique of providing flexible partitioning assemblies in commercial and residential buildings. The thickness of the drywall board lining and the configuration of the framing can be flexibly changed to meet specified fire performance requirements. The use of such systems is increasing every day and there demands to be more research on their properties and behaviour. This paper will presents the properties of drywall board which will includes the assemblies and standard fire tests and the thermal properties of drywall in general and includes suggested properties of drywall by different researchers. Drywall boards shrink and crack at high temperatures, and this leads to collapse of parts of the drywall boards in fire. Fall-off of gypsum in fire affects the fire resistance of the assembly considerably, and cannot be overlooked when evaluating the fire resistance of drywall assemblies

scholarly journals Operating at High TemperaturesContribution to the Magneto-Thermal Modeling of SRM Operating at High Temperatures

2021 ◽  
Vol 23 (2) ◽  
pp. 143-147
Author(s):  
Karim Alitouche ◽  
Hocine Menana ◽  
Jihane Khalfi ◽  
Noureddine Takorabet ◽  
Rachid Saou
Keyword(s):  
Thermal Properties ◽  
High Temperatures ◽  
Thermal Modeling ◽  
Electrical Machines ◽  
Switched Reluctance ◽  
Thermal Properties Of Materials ◽  
Properties Of Materials ◽  
Modeling Strategy

In this paper, we present a simplified magneto-thermal modeling strategy for switched reluctance electrical machines (SRM) operating at high temperatures. In addition to the magnetic non-linearity, the variations of the electromagnetic and thermal properties of materials with the temperature are taken also into account. The rapidity of the proposed approach makes it compatible with a CAD approach.

THERMAL PROPERTIES OF ALLOYS AT HIGH TEMPERATURES

1963 ◽  
Author(s):  
Raymond L. Orr ◽  
Ralph Hultgren
Keyword(s):  
Thermal Properties ◽  
High Temperatures

scholarly journals Nobeyama 45 m mapping observations toward Orion A. III. Multi-line observations toward an outflow-shocked region, Orion Molecular Cloud 2 FIR 4

2019 ◽  
Vol 71 (Supplement_1) ◽  
Author(s):  
Fumitaka Nakamura ◽  
Shuri Oyamada ◽  
Sachiko Okumura ◽  
Shun Ishii ◽  
Yoshito Shimajiri ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Star Formation ◽  
High Temperatures ◽  
Molecular Cloud ◽  
Class I ◽  
Excitation Temperature ◽  
High Excitation ◽  
Protostellar Outflows ◽  
First Time ◽  
Dense Clump

Abstract We present the results of mapping observations toward an outflow-shocked region, OMC-2 FIR 4, using the Nobeyama 45 m telescope. We observed the area in 13CO (J = 1–0), C18O (J = 1–0), N2H+ (J = 1–0), CCS (JN = 87–76), HCO+ (J = 1–0), H13CO+ (J = 1–0), HN13C (J = 1–0), H13CN (J = 1–0), DNC (J = 1–0), N2D+ (J = 1–0), and DC3N (J = 9–8). We detected a dense molecular clump that contains FIR 4/5. We also detected, in the 13CO line, blueshifted and redshifted components driven presumably by protostellar outflows in this region. The axes of the FIR 3 and VLA 13 outflows, projected on the plane of the sky, appear to point to the FIR 4 clump, suggesting that it may be compressed by protostellar outflows from Class I sources, FIR 3 and VLA 13. Applying a hyperfine fit of N2H+ lines, we estimated the excitation temperature to be ∼20 K. The high excitation temperature is consistent with the fact that the clump contains protostars. CCS emission was detected in this region for the first time. Its abundance is estimated to be a few × 10−12, indicating that the region is chemically evolved at ∼105 yr, which is comparable to the typical lifetime of Class I protostars. This timescale is consistent with the scenario that star formation in FIR 4 is triggered by dynamical compression of the protostellar outflows. The [HNC]/[HCN] ratio was evaluated to be ∼0.5 in the dense clump and the outflow lobes, whereas it is somewhat larger in the envelope of the dense clump. The small [HNC]/[HCN] ratio indicates that HNC formation was prevented due to high temperatures. Such high temperatures seem to be consistent with the scenario that either protostellar radiation, or outflow compression, or both affected the thermal properties of this region.

Mechanical, Hygric, and Thermal Properties of Cement-Based Composite with Hybrid Fiber Reinforcement Subjected to High Temperatures

2009 ◽  
Vol 30 (4) ◽  
pp. 1310-1322 ◽  
Author(s):  
Eva Vejmelková ◽  
Petr Konvalinka ◽  
Pavel Padevět ◽  
Lubomír Kopecký ◽  
Martin Keppert ◽  
...  
Keyword(s):  
Thermal Properties ◽  
High Temperatures ◽  
Fiber Reinforcement ◽  
Hybrid Fiber

Thermal properties and apparent molar volumes Vϕ of ZnCl2 (aq) in high temperatures and pressures

2006 ◽  
Vol 128 (1-3) ◽  
pp. 127-133 ◽  
Author(s):  
Javid T. Safarov ◽  
Rasim M. Jannataliyev ◽  
Astan N. Shahverdiyev ◽  
Egon P. Hassel
Keyword(s):  
Thermal Properties ◽  
High Temperatures ◽  
Apparent Molar Volumes ◽  
Molar Volumes

Effect of High Temperatures on the Thermal Properties of Granite

2019 ◽  
Vol 52 (8) ◽  
pp. 2691-2699 ◽  
Author(s):  
Qiang Sun ◽  
Weiqiang Zhang ◽  
Yanming Zhu ◽  
Zhen Huang
Keyword(s):  
Thermal Properties ◽  
High Temperatures
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