The purpose of this paper is to introduce new theoretical concepts as opposed to accepting the existence of dark entities, such as dark energy. This research sought to introduce a 2<sup>nd</sup> universal ...The purpose of this paper is to introduce new theoretical concepts as opposed to accepting the existence of dark entities, such as dark energy. This research sought to introduce a 2<sup>nd</sup> universal space-time constant, besides having a finite speed constant (speed of light in vacuum c). A finite universal age constant b is introduced. Namely, this paper shows that the changes in the Earth’s anomalistic year duration over time support the hypothesis of the age of the universe correlating with a maximum number of orbital revolutions constant. Neglecting the gravitational influence of other cosmological entities in the proximity of the Earth, the constant maximum number of revolutions is herewith determined solely by the Earth’s orbital revolutions around the Sun. The value of the universal age constant b is calculated to be around 13.8 billion orbital revolutions, derived out of an equation related to the changes in the Earth’s anomalistic year duration over time and the so-called Hubble tension. The above-mentioned calculated value b correlates well with the best fit to measured data of the cosmic microwave background radiation (CMBR) by the Planck spacecraft, the age of the observed universe is measured to be approximately 13.787 ± 0.020 billion years (2018 final data release). Developing a theory with this 2<sup>nd</sup> universal space-time constant b, being covariant with respect to the Lorentz transformations when time spans are large, gives results such as: A confirmation of the measured CMBR value of 13.787 ± 0.020 billion years. Correlating well with the observed expansion rate of the universe (dark energy). The universe’s expansion accelerating over the last four to five billion years.展开更多
Basing on the DFT calculations we propose the new theoretical model which describes both the surface tension σ of the short chain n-alkanes at their normal boiling points and their reaction rate constants with hydrox...Basing on the DFT calculations we propose the new theoretical model which describes both the surface tension σ of the short chain n-alkanes at their normal boiling points and their reaction rate constants with hydroxyl radicals OH<span style="white-space:nowrap;">•</span> (at 297 ± 2 K) on the basis of their molecular orbital electronic characteristics. It has been shown that intermolecular dispersion attraction within the surface liquid monolayer of these compounds, as well as their reaction rate constants k with OH<span style="white-space:nowrap;">•</span> radicals are determined by the energies <em>E<sub>orb</sub></em> of the specific occupied molecular orbitals which are the same in the determination of both the above physico-chemical characteristics of the studied n-alkanes. The received regression equations confirm the theoretically found dependences between the quantities of σ and k and the module |<em>E<sub>orb</sub></em>|. For the compounds under study this fact indicates the key role of their electronic structure particularities in determination of both the physical (surface tension) and the chemical (reaction rate constants) properties.展开更多
目的:探讨A型肉毒毒素(Botulinum toxin type A,BTX-A)联合眶隔膜张力重建术整复松弛型下睑袋临床效果。方法:选取2020年12月-2022年12月在笔者医院治疗的松弛型下睑袋就医者为研究对象,共87例。根据治疗方法分为实验组(n=47)和对照组(n...目的:探讨A型肉毒毒素(Botulinum toxin type A,BTX-A)联合眶隔膜张力重建术整复松弛型下睑袋临床效果。方法:选取2020年12月-2022年12月在笔者医院治疗的松弛型下睑袋就医者为研究对象,共87例。根据治疗方法分为实验组(n=47)和对照组(n=40),实验组行BTX-A联合眶隔膜张力重建术,对照组行眶隔膜张力重建术,术后对就医者进行随访,比较下睑袋术后效果、泪沟畸形(Barton分级)、术后外观满意度、手术并发症。结果:治疗后,实验组瘢痕宽度、VSS低于对照组(P<0.05),手术时间及切口恢复时间与对照组比较,差异无统计学意义(P>0.05);两组就医者Barton分级均有所改善,且实验组0级和1级(95.74%)高于对照组(82.50%)(P<0.05);治疗后,实验组满意度(95.74%)高于对照组(80.00%)(P<0.05);治疗后,实验组与对照组并发症发生率比较,差异无统计学意义(P>0.05)。结论:BTX-A联合眶隔膜张力重建术整复松弛型下睑袋,能够有效消除下睑袋,减少瘢痕增生,改善Barton分级构成,就医者外观满意度较高。展开更多
文摘The purpose of this paper is to introduce new theoretical concepts as opposed to accepting the existence of dark entities, such as dark energy. This research sought to introduce a 2<sup>nd</sup> universal space-time constant, besides having a finite speed constant (speed of light in vacuum c). A finite universal age constant b is introduced. Namely, this paper shows that the changes in the Earth’s anomalistic year duration over time support the hypothesis of the age of the universe correlating with a maximum number of orbital revolutions constant. Neglecting the gravitational influence of other cosmological entities in the proximity of the Earth, the constant maximum number of revolutions is herewith determined solely by the Earth’s orbital revolutions around the Sun. The value of the universal age constant b is calculated to be around 13.8 billion orbital revolutions, derived out of an equation related to the changes in the Earth’s anomalistic year duration over time and the so-called Hubble tension. The above-mentioned calculated value b correlates well with the best fit to measured data of the cosmic microwave background radiation (CMBR) by the Planck spacecraft, the age of the observed universe is measured to be approximately 13.787 ± 0.020 billion years (2018 final data release). Developing a theory with this 2<sup>nd</sup> universal space-time constant b, being covariant with respect to the Lorentz transformations when time spans are large, gives results such as: A confirmation of the measured CMBR value of 13.787 ± 0.020 billion years. Correlating well with the observed expansion rate of the universe (dark energy). The universe’s expansion accelerating over the last four to five billion years.
文摘Basing on the DFT calculations we propose the new theoretical model which describes both the surface tension σ of the short chain n-alkanes at their normal boiling points and their reaction rate constants with hydroxyl radicals OH<span style="white-space:nowrap;">•</span> (at 297 ± 2 K) on the basis of their molecular orbital electronic characteristics. It has been shown that intermolecular dispersion attraction within the surface liquid monolayer of these compounds, as well as their reaction rate constants k with OH<span style="white-space:nowrap;">•</span> radicals are determined by the energies <em>E<sub>orb</sub></em> of the specific occupied molecular orbitals which are the same in the determination of both the above physico-chemical characteristics of the studied n-alkanes. The received regression equations confirm the theoretically found dependences between the quantities of σ and k and the module |<em>E<sub>orb</sub></em>|. For the compounds under study this fact indicates the key role of their electronic structure particularities in determination of both the physical (surface tension) and the chemical (reaction rate constants) properties.
文摘目的:探讨A型肉毒毒素(Botulinum toxin type A,BTX-A)联合眶隔膜张力重建术整复松弛型下睑袋临床效果。方法:选取2020年12月-2022年12月在笔者医院治疗的松弛型下睑袋就医者为研究对象,共87例。根据治疗方法分为实验组(n=47)和对照组(n=40),实验组行BTX-A联合眶隔膜张力重建术,对照组行眶隔膜张力重建术,术后对就医者进行随访,比较下睑袋术后效果、泪沟畸形(Barton分级)、术后外观满意度、手术并发症。结果:治疗后,实验组瘢痕宽度、VSS低于对照组(P<0.05),手术时间及切口恢复时间与对照组比较,差异无统计学意义(P>0.05);两组就医者Barton分级均有所改善,且实验组0级和1级(95.74%)高于对照组(82.50%)(P<0.05);治疗后,实验组满意度(95.74%)高于对照组(80.00%)(P<0.05);治疗后,实验组与对照组并发症发生率比较,差异无统计学意义(P>0.05)。结论:BTX-A联合眶隔膜张力重建术整复松弛型下睑袋,能够有效消除下睑袋,减少瘢痕增生,改善Barton分级构成,就医者外观满意度较高。
