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Thermal transition
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The derived temperature dependences of the peak intensities, separations and half-widths of the separate spectral peaks in the A-band phonon progressions indicate the different trends for vibration-free zero-phonon electronic transition and vibration-related lower-energy electronic transitions to high vibrational levels of the ground electronic state – lower thermal damping and more softened phonon for the zero-phonon transition, also implying the extended defect origin of the A-band photoluminescence.
9p
dianmotminh02
03-05-2024
3
1
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Part 1 book "Quantum physics" by author Robert Eisberg includes content: Thermal radiation and Planck's postulate; photons — particlelike properties of radiation; de Broglie's postulate — wavelike properties of particles; Bohr's model of the atom; Schrödinger's theory of quantum mechanics; solutions of time independent Schrödinger equations; one electron atoms; magnetic dipole moments, spin, and transition rates; multielectron atoms — ground states and x-ray excitations.
364p
muasambanhan10
06-04-2024
1
0
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Ebook "Ultraviolet and X-ray spectroscopy of the solar atmosphere" give us information about temperatures, densities, flow velocities, filling factors (indicating to what extent features are being spatially resolved), thermal structure, element abundances, ionization state of solar plasmas in the outer parts of the solar atmosphere: the chromosphere, the corona and the enigmatic transition region. They also allow insight into all phenomena in the solar atmosphere, e.g. flares, jets, and prominences.
390p
duongthandue0501
28-02-2024
1
1
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Part 1 book "Quantum physics of atoms, molecules, solids, nuclei, and particles" includes content: Thermal radiation and Planck's postulate; photons — particlelike properties of radiation; de Broglie's postulate — wavelike properties of particles; Bohr's model of the atom; Schrödinger's theory of quantum mechanics; solutions of time independent Schrödinger equations; one electron atoms; magnetic dipole moments, spin, and transition rates; multielectron atoms — ground states and x-ray excitations.
364p
muasambanhan07
18-02-2024
11
1
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In recent years, there has been a growing focus on solar thermal collectors as they offer a direct and efficient means of converting solar energy into usable forms. In line with this, significant attention has been directed towards advancing transition metal nitride and metal oxynitride nanostructures for solar-thermal collectors to maximize solar energy harvesting.
9p
vigojek
02-02-2024
4
1
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Part 2 book "Elementary textbook on physics (Vol 1 - Mechanics heat molecular physics)" includes content: Thermal expansion of solids and liquids; work heat law of energy conservation; molecular theory; properties of gases; properties of liquids; properties of solids - transition from solid to liquid state; elasticity and strength; properties of vapours; physics of the atmosphere; heat engines.
217p
muasambanhan02
18-12-2023
4
2
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Ebook "Introduction to percolation theory (2nd revised edition)" dealing with percolation theory clustering, criticallity, diffusion, fractals and phase transitions takes a broad approach to the subject, covering basic theory and also specialized fields like disordered systems and renormalization groups.
179p
loivantrinh
29-10-2023
3
2
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Continued part 1, part 2 of ebook "Fundamentals of condensed matter and crystalline physics: An introduction for students of physics and materials science" provides readers with contents including: liquid dynamics; crystal vibrations; thermal properties; electrons - the free electron model; electrons - band theory; bulk dynamics and response; introduction to phase transitions; percolation theory; mean field theory and renormalization;...
262p
dangsovu
20-10-2023
4
3
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The program developed in this study will be put at the service of every researcher, and the system of the program can be used on any Windows Software compatible computer. While preparing the program, an easy-to-understand and flexible MATLAB environment was used. The thermal analysis data of synthesized N’-(4-chlorobenzoyl)-N,N-di-n-butylthiourea (HL) and its Ni(II) complex have been digitalized by measuring with thermal analyses such as DTA, TG with hardware technical equipment.
8p
lyhuyenthu
31-01-2023
8
2
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Starch is an important class of macromolecules for human nutrition. However, its rapid digestibility leads to a high amount of glucose released into the blood and contributes to a high risk of obesity and type II diabetes.
8p
vihermione
06-01-2023
10
3
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Amylose‑sodium stearate (SS) complexes (2, 5 and 8%) in heat-moisture treated potato starch (HPS) were evaluated for their physicochemical properties. Based on the DSC thermograms, the amylose - SS complexes were successfully formed with high thermal stability, indicated by a melt temperature (Tpeak) of ≥ 112 ◦C for type I and ≥125 ◦C for type II complexes.
8p
viginny
30-12-2022
14
2
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The dehydration of the CPO-27-M (M-MOF-74, M = Zn, Co, Ni, Mg, Mn, Cu) metal-organic framework series has been investigated comprehensively using in situ variable temperature powder X-ray diffraction (VT-PXRD) and thermal analysis (TG) coupled with mass spectrometry (MS).
12p
vironald
15-12-2022
7
2
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This paper followed the process of realizing a sector-coupling investment in a thermal energy storage in Copenhagen from 2017 to 2020. The analysis shows that while plans may help to define technological qualities and purposes, they do not always convince actors. Plans simultaneously close down technological uncertainty and open up others and through this cycle the energy planning process moves forward.
11p
huangminghao_1902
27-02-2022
10
2
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A series of binucleating Cu(II), Ni(II), and Zn(II) complexes of bicompartmental ligands with ONO donors were prepared. The ligands were synthesized by the condensation of 5-substituted-3-phenyl-1H -indole-2-carboxyhydrazides and 4,6-diacetylresorcinol. The newly synthesized ligands and their complexes were characterized by elemental analysis and various spectral studies like IR, 1H NMR, ESI-mass, UV-Vis, ESR, thermal studies, magnetic susceptibility, molar conductance, and powder-XRD data.
21p
langthannam
29-12-2021
8
0
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A series of solution processable, wide band-gap host materials composed of carbazole and tetraphenylsilane groups were designed and synthesized. Their thermal, electrochemical, and photophysical properties were fully investigated. The introduction of bulky tetraphenylsilane and tert-butyl groups around the carbazole led to high glass transition temperatures (Tg) between 120 and 204◦C. The triplet energies (ET) of the synthesized materials were examined by low temperature (77 K) photoluminescence studies and determined as E T > 2.6 for all compounds.
24p
langthannam
29-12-2021
7
0
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In this study, two heterometallic transition metal complexes with the formulas [CoK4(µ10-C6H5O7)2]n and [CdK(µ8-C6H5O7)(µ-H2O)(H2O)]n were synthesized as crystalline compounds. The structures of these crystalline metal complexes were characterized by their spectral analyses (FT-IR, FT-Raman, thermal analysis, magnetic properties, and single-crystal X-ray diffraction techniques). According to the spectral data of the new metal complexes obtained, both metal complexes are in the monoclinic crystal system and in the P21/c and P21 space groups, respectively.
14p
tudichquannguyet
29-11-2021
9
1
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The mechanism as well the stereochemistry of cascade cycloisomerization of 15–membered triazatriacetylenic macrocycle was investigated theoretically by using M062X/6–31+G(d,p) and M062X/LANL2DZ calculations. The results showed that the mechanism and outcome of the reaction depended on the absence and presence of a transition metal catalyst. So that, in thermal-induced condition, the reaction had to experience several suprafacial concerted reactions including Ene-reaction (DG# =35.38 kcal/mol), Diels–Alder cycloaddition (DG# = 17.16 kcal/mol), and sigmatropic H-shift rearrangement (DG# = 56.
16p
tudichquannguyet
29-11-2021
6
1
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In this paper, glass transition temperature (Tg) and microstructure of hard candy honey flavored havebeen investigated using differential scanning calorimetry (DSC) data and scanning electron microscopyimages (SEM) respectively. Precisely, the glass transition temperature can be used as reference temper-ature to determine the operating mode of processing stages.
7p
phanngocminhtam
14-09-2021
8
1
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Blends of polyphenylene oxide (PPO) and acrylonitrile butadiene styrene (ABS) were prepared by melt-mixing method. Flammability of these blends was studied by using UL-94 (plastics flammability standard) and LOI (limited oxygen index) tests. The results showed the role of PPO as flame retardant in the blends which can inhibit the burning process. All blends of PPO and ABS were graded as V-1 and LOI values were higher than 21. As a physical mixture, tensile strength of PPO/ABS blends maintained values between the tensile of neat ABS and PPO.
4p
cothumenhmong11
06-05-2021
24
0
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State policy of Kazakhstan on implementing of renewable energy sources in textile industry companies
The article discusses the mechanisms of state support for the development of renewable energy sources (RES) in the Republic of Kazakhstan. The authors consider the prospects of using solar energy in the textile industry.
6p
caygaocaolon11
18-04-2021
15
2
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