Results 41 to 50 of about 264,106 (287)

Air Enthalpy as an IAQ Indicator in Hot and Humid Environment—Experimental Evaluation

open access: yesEnergies, 2020
The authors studied the impact of indoor air humidity in the range of 60% to 90% on building user perception in the temperature range of 26 to 28 °C.
Michał Piasecki   +3 more
doaj   +1 more source

Criteria ruling particle agglomeration

open access: yesBeilstein Journal of Nanotechnology, 2021
Most of the technically important properties of nanomaterials, such as superparamagnetism or luminescence, depend on the particle size. During synthesis and handling of nanoparticles, agglomeration may occur.
Dieter Vollath
doaj   +1 more source

Some empirical correlations between the thermodynamic properties of hydrogen cyanide, water and acetylene molecules and their infrared spectra [PDF]

open access: yesTrakia Journal of Sciences, 2018
A new method for calculating vibrational modes in the infrared region of the spectrum is proposed. The method is based on the thermodynamic parameters of the molecules- standard molar Gibbs free energy change of molecular formation ΔGf0 (kJ/mol ...
A. Atanasov
doaj   +1 more source

Loss of strength in Ni3Al at elevated temperatures [PDF]

open access: yes, 2006
Stress decrease above the stress peak temperature (750 K) is studied in h123i single crystals of Ni3(Al, 3 at.% Hf ). Two thermally activated deformation mechanisms are evidenced on the basis of stress relaxation and strain rate change experiments.
Ahmadieh A   +26 more
core   +4 more sources

Transient behavior of ablation and swelling for C/C composite and HfC-coated C/C composite in an arc-heated wind tunnel

open access: yesCase Studies in Thermal Engineering
This study investigated and modeled the transient behavior of surface recession, defined as the difference between ablative length and swelling length, for thermal protection materials within a high-enthalpy flow.
Moon Won Song   +4 more
doaj   +1 more source

Two distinct DNA sequences recognized by transcription factors represent enthalpy and entropy optima

open access: yeseLife, 2018
Most transcription factors (TFs) can bind to a population of sequences closely related to a single optimal site. However, some TFs can bind to two distinct sequences that represent two local optima in the Gibbs free energy of binding (ΔG).
Ekaterina Morgunova   +8 more
doaj   +1 more source

Entropy and biological systems: experimentally-investigated entropy-driven stacking of plant photosynthetic membranes [PDF]

open access: yes, 2014
According to the Second Law of thermodynamics, an overall increase of entropy contributes to the driving force for any physicochemical process, but entropy has seldom been investigated in biological systems.
Chow, Wah Soon   +2 more
core   +2 more sources

Clean energy pipeline energy storage system and its economy

open access: yesCase Studies in Thermal Engineering
The economic problem of a clean energy heating system under a peak and valley electricity pricing system is investigated, and a pipe network energy storage system is correspondingly proposed to solve this problem.
Ronghua Wu   +5 more
doaj   +1 more source

Remoção dos corantes azul brilhante, amarelo crepúsculo e amarelo tartrazina de soluções aquosas utilizando carvão ativado, terra ativada, terra diatomácea, quitina e quitosana: estudos de equilíbrio e termodinâmica

open access: yesQuímica Nova, 2011
This work compared activated carbon, activated earth, diatomaceous earth, chitin and chitosan to removal acid blue 9, food yellow 3 and FD&C yellow nº 5 dyes from aqueous solutions with different pH values (2-10).
Guilherme Luiz Dotto   +3 more
doaj   +1 more source

Long-Distance Transport of Finisher Pigs in the Iberian Peninsula: Effects of Season on Thermal and Enthalpy Conditions, Welfare Indicators and Meat pH

open access: yesAnimals, 2021
Current legislation in the European Union places limits on live pig transport according to outside temperature, but less is known about the effects of sudden changes in the thermal microenvironment in trailers, particularly during long-distance transport.
Genaro C. Miranda-de la Lama   +5 more
doaj   +1 more source

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