| 释义 |
Definition of enthalpy in English: enthalpynounˈɛnθ(ə)lpiɛnˈθalpi Physics 1A thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume. 〔物理〕焓，热函（符号： H ） Example sentencesExamples - The internal energy of a system, like the enthalpy, is a state property, so it is fixed when the state of the system is specified.
- Unlike enthalpies, component entropies are nonadditive.
- We have modeled the closing kinetics and in so doing have obtained stacking enthalpies and entropies for single-stranded nucleic acids.
- Thermogram transition temperatures, enthalpies, and widths at half-height were determined using the software provided with the calorimeter.
- Scanning calorimetry is used as a direct method to reveal the thermodynamic properties of phase transition like transition temperatures and enthalpies.
- 1.1 The change in enthalpy associated with a particular chemical process.
（与特定的化学反应过程相关的）焓变 most compounds have negative enthalpies of formation Example sentencesExamples - In addition, melting requires significant amounts of extra heat, (in thermodynamic terms, the enthalpy of fusion), to break molecular bonds and cause a phase transition from solid to liquid.
- The positive correlations lend support to the claim that a coupling free energy may reflect a state in which enthalpy and entropy components compensate for each other.
- So, we can get useful work out of a system by reducing enthalpy or by increasing entropy (increasing the amount of disorder).
- First, the volume change and the enthalpy change of the protein can be determined in time domain without temperature variation or solvent variation method.
- The enthalpy, entropy, and free energy changes in the opening reaction of each basepair are determined from the temperature dependence of the exchange rates.
Origin1920s: from Greek enthalpein 'warm in', from en- 'within' + thalpein 'to heat'. Definition of enthalpy in US English: enthalpynoun Physics 1A thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume. 〔物理〕焓，热函（符号： H ） Example sentencesExamples - Scanning calorimetry is used as a direct method to reveal the thermodynamic properties of phase transition like transition temperatures and enthalpies.
- Unlike enthalpies, component entropies are nonadditive.
- The internal energy of a system, like the enthalpy, is a state property, so it is fixed when the state of the system is specified.
- We have modeled the closing kinetics and in so doing have obtained stacking enthalpies and entropies for single-stranded nucleic acids.
- Thermogram transition temperatures, enthalpies, and widths at half-height were determined using the software provided with the calorimeter.
- 1.1 The change in enthalpy associated with a particular chemical process.
（与特定的化学反应过程相关的）焓变 most compounds have negative enthalpies of formation Example sentencesExamples - In addition, melting requires significant amounts of extra heat, (in thermodynamic terms, the enthalpy of fusion), to break molecular bonds and cause a phase transition from solid to liquid.
- First, the volume change and the enthalpy change of the protein can be determined in time domain without temperature variation or solvent variation method.
- So, we can get useful work out of a system by reducing enthalpy or by increasing entropy (increasing the amount of disorder).
- The enthalpy, entropy, and free energy changes in the opening reaction of each basepair are determined from the temperature dependence of the exchange rates.
- The positive correlations lend support to the claim that a coupling free energy may reflect a state in which enthalpy and entropy components compensate for each other.
Origin1920s: from Greek enthalpein ‘warm in’, from en- ‘within’ + thalpein ‘to heat’. |