scholarly journals On the appearance of the cleveite and other new gas lines in the hottest stars

1898 ◽  
Vol 62 (379-387) ◽  
pp. 52-67 ◽  
Keyword(s):  
Unknown Origin ◽  
Temperature Limit ◽  
Temperature Curve

In my recent paper on “The Chemistry of the Hottest Stars,” I left for future discussion the spectra of those stars apparently at or near the apex of the temperature curve, for the reason that in them the lines of known gases do not show very great variations, while the enhanced lines cease to be of service as a criterion of temperature. I pointed out, however, that there were several lines, as yet of unknown origin, which are strong in some of these stars and weaker in others, and that the study of these might eventually help us in classifying such stars and arranging them in temperature order, but that before attempting to use the unknown lines in these inquiries it was important in the first instance to discriminate, if possible, between gaseous and metallic lines. Until this point was investigated the relative behaviour of the lines of hydrogen and cleveite gases near the upper temperature limit could not be satisfactorily discussed.

scholarly journals CFD Modeling on Thermal Management of IC using Water Based Fe, Cu and Al Nanofluids

2019 ◽  
Vol 8 (6) ◽  
pp. 1666-1670
Keyword(s):  
Thermal Management ◽  
Temperature Limit ◽  
Temperature Curve ◽  
Cfd Modeling ◽  
Solid Boundary ◽  
Mass Force ◽  
Boundary Temperature ◽  
Water Based ◽  
One To One

In unrelenting civility, CFD codes are developed and simulated with water based Fe, Cu and Al nanofluids for foreseeing the heat alarms of ICs. The convective governing equalities of mass, force and drive are computed for envisaging the thermal issues of ICs. The time pace selected throughout the intact computation is 0.0001 s. The soundings affect CFD forecasts of temperature curve, temperature arena plus fluid-solid boundary temperature of IC. Corresponding fluid-solid boundaries temperatures of IC are viewed as 321, 309 and 313 K for water based Fe, Cu and Al nanofluids, one-to-one. The temperature of water-Cu nanofluid stands peak contiguous to the IC locality as it stands far less than the chancy temperature limit of 356 K. Further, the temperature of water-Cu nanofluid gently drops with improvement in aloofness from IC. Afterwards, this becomes surrounding temperature in the distant arena precinct. The analogous tinted temperature curve stands accessible. In addition, the congruent plot of temperature verses distance from IC stays revealed. The uneasiness of CFD compassionate position nearby the conveniences of jargons.

scholarly journals Numerical Simulation on Ic Cooling with Water Based Tin, Tic And Sic Nanofluids

2019 ◽  
Vol 8 (3) ◽  
pp. 1351-1355
Keyword(s):  
Numerical Simulation ◽  
Temperature Limit ◽  
Temperature Curve ◽  
Solid Boundary ◽  
Mass Force ◽  
Boundary Temperature ◽  
Water Based ◽  
Ic Cooling

In persistent consideration, CFD codes got established and executed with water based TiN, TiC and SiC nanofluids to envision the thermal alarms of ICs. The convective governing equalities of mass, force and drive are computed for envisaging the thermal issues of ICs. The time pace selected throughout the intact computation is 0.0001 s. The soundings affect CFD forecasts of temperature curve, temperature arena plus fluid-solid boundary temperature of IC. Corresponding fluid-solid boundaries temperatures of IC are viewed as 341, 310 and 319 K for water based TiN, TiC and SiC nanofluids, respectively. The temperature of water-TiC nanofluid stands peak contiguous to the IC locality as it stands far less than the chancy temperature limit of 356 K. Further, the temperature of water-TiC nanofluid gently drops with improvement in aloofness from IC. Afterwards, this becomes surrounding temperature in the distant arena precinct. The analogous tinted temperature curve stands accessible. Besides, the harmonizing graph of temperature against distance from IC stands revealed. Tritely, the evolution of CFD construal stay beside the aptitudes of deportments.

scholarly journals Modeling and Simulation on IC Cooling using Water Centered SiO2, TiC and MgO Nanofluids

2019 ◽  
Vol 8 (10) ◽  
pp. 1971-1975
Keyword(s):  
Modeling And Simulation ◽  
Temperature Limit ◽  
Temperature Curve ◽  
Solid Boundary ◽  
Mass Force ◽  
Boundary Temperature ◽  
Water Based ◽  
Ic Cooling

In stubborn courtesy, CFD codes became established and executed with water based SiO2 , TiC and MgO nanofluids to envision the thermal alarms of ICs. The convective governing equalities of mass, force and drive are computed for envisaging the thermal issues of ICs. The time pace selected throughout the intact computation is 0.0001 s. The soundings affect CFD forecasts of temperature curve, temperature arena plus fluid-solid boundary temperature of IC. Corresponding fluid-solid boundaries temperatures of IC are viewed as 349, 310 and 328 K for water based SiO2 , TiC and MgO nanofluids, respectively. The temperature of water-TiC nanofluid stands peak contiguous to the IC locality as it stands far less than the chancy temperature limit of 356 K. Further, the temperature of water-TiC nanofluid gently drops with improvement in aloofness from IC. Afterwards, this becomes surrounding temperature in the distant arena precinct. The analogous tinted temperature curve stands accessible. Besides, the harmonizing graph of temperature against distance from IC remains revealed. The realization of CFD indulgent endure proximate to the services of miens.

scholarly journals CFD Simulation on IC Thermal Cooling through Water Involved TiO2, AlN and CuO Nanofluids

2019 ◽  
Vol 8 (10) ◽  
pp. 1976-1980
Keyword(s):  
Cfd Simulation ◽  
Temperature Limit ◽  
Temperature Curve ◽  
Solid Boundary ◽  
Mass Force ◽  
Boundary Temperature ◽  
Water Based ◽  
Thermal Cooling

In persevering courteousness, CFD codes got developed and run with water based TiO2 , AlN and CuO nanofluids to envision the thermal alarms of ICs. The convective governing equalities of mass, force and drive are computed for envisaging the thermal issues of ICs. The time pace selected throughout the intact computation is 0.0001 s. The soundings affect CFD forecasts of temperature curve, temperature arena plus fluid-solid boundary temperature of IC. Corresponding fluid-solid boundaries temperatures of IC are viewed as 351, 312 and 338 K for water based TiO2 , AlN and CuO nanofluids, respectively. The temperature of water-AlN nanofluid stands peak contiguous to the IC locality as it stands far less than the chancy temperature limit of 356 K. Further, the temperature of water-AlN nanofluid gently drops with improvement in aloofness from IC. Afterwards, this becomes surrounding temperature in the distant arena precinct. The analogous tinted temperature curve stands accessible. In addition, the congruent plot of temperature verses distance from IC stays publicized. The apprehension of CFD lenient stand adjacent to the facilities of expressions.

Temperature and Ion-Mass Dependence of Amorphization Dose for Ion Beam Irradiated Zircon (ZrSiO4)

1992 ◽  
Vol 279 ◽  
Author(s):  
L. M. Wangl ◽  
R. C. Ewing ◽  
W. J. Weber ◽  
R. K. Eby
Keyword(s):  
Temperature Dependence ◽  
Low Temperatures ◽  
Ion Irradiation ◽  
Ion Beam ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Temperature Limit ◽  
Temperature Curve ◽  
Mass Dependence ◽  
The Third

ABSTRACTThe temperature dependence of amorphization dose for zircon under 1.5 MeV Kr ion irradiation has been investigated using the HVEM-Tandem Facility at Argonne National Laboratory. Three regimes were observed in the amorphization dose-temperature curve. In the first regime (15 to 300 K), the critical amorphization dose increased from 3.06 to 4.5 ions/nm2. In the second regime (300 to 473 K), there is little change in the amorphization dose. In the third regime (> 473 K), the amorphization dose increased exponentially to 8.3 ions/nm2 at 913 K. This temperature dependence of amorphization dose can be described by two processes with different activation energies (0.018 and 0.31 eV respectively) which are attributed to close pair recombination in the cascades at low temperatures and radiation-enhanced epitaxial recrystallization at higher temperatures. The upper temperature limit for amorphization of zircon is estimated to be 1100 K. The ion-mass dependence of the amorphization dose (in dpa) has also been discussed in terms of the energy to recoils based on data obtained from He, Ne, Ar, Kr, Xe irradiations and a 238Pu-doped sample.

scholarly journals Computational Simulation on Ic Cooling using Water Based Zno, Aln And Al2o3 Nanofluids

2019 ◽  
Vol 8 (3) ◽  
pp. 2280-2283
Keyword(s):  
Computational Simulation ◽  
Temperature Limit ◽  
Temperature Curve ◽  
Solid Boundary ◽  
Mass Force ◽  
Boundary Temperature ◽  
Water Based ◽  
Ic Cooling

In obstinate attention, CFD codes got established and executed with water based ZnO, AlN and Al2O3 nanofluids to envision the thermal alarms of ICs. The convective governing equalities of mass, force and drive are computed for envisaging the thermal issues of ICs. The time pace selected throughout the intact computation is 0.0001 s. The soundings affect CFD forecasts of temperature curve, temperature arena plus fluid-solid boundary temperature of IC. Corresponding fluid-solid boundaries temperatures of IC are viewed as 348, 312 and 329 K for water based ZnO, AlN and Al2O3 nanofluids, respectively. The temperature of water-AlN nanofluid stands peak contiguous to the IC locality as it stands far less than the chancy temperature limit of 356 K. Further, the temperature of water-AlN nanofluid gently drops with improvement in aloofness from IC. Afterwards, this becomes surrounding temperature in the distant arena precinct. The analogous tinted temperature curve stands accessible. Besides, the harmonizing graph of temperature against distance from IC stands revealed. The fruition of CFD understanding remain near the skills of postures

A 200-Year History of the Study of Childhood Language Disorders of Unknown Origin: Changes in Terminology

2020 ◽  
Vol 5 (1) ◽  
pp. 6-11 ◽  
Author(s):  
Laurence B. Leonard
Keyword(s):  
Language Impairment ◽  
Specific Language Impairment ◽  
Scientific Literature ◽  
Language Disorder ◽  
Language Disorders ◽  
Unknown Origin ◽  
Developmental Language Disorder ◽  
The Past ◽  
History Of ◽  
The Many

Purpose The current “specific language impairment” and “developmental language disorder” discussion might lead to important changes in how we refer to children with language disorders of unknown origin. The field has seen other changes in terminology. This article reviews many of these changes. Method A literature review of previous clinical labels was conducted, and possible reasons for the changes in labels were identified. Results References to children with significant yet unexplained deficits in language ability have been part of the scientific literature since, at least, the early 1800s. Terms have changed from those with a neurological emphasis to those that do not imply a cause for the language disorder. Diagnostic criteria have become more explicit but have become, at certain points, too narrow to represent the wider range of children with language disorders of unknown origin. Conclusions The field was not well served by the many changes in terminology that have transpired in the past. A new label at this point must be accompanied by strong efforts to recruit its adoption by clinical speech-language pathologists and the general public.

Low-temperature limit of the rate of propagation of chains in the hydrobromination of ethylene

1979 ◽  
Vol 76 ◽  
pp. 1013-1015 ◽  
Author(s):  
D.P. Kiryukhin ◽  
I.M. Barkalov ◽  
V.l. Goldanskii
Keyword(s):  
Low Temperature ◽  
Temperature Limit
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