Determination of curves characterizing the texture of microporous adsorbents

The possibility of determining the curves characterizing the texture of microporous absorbents on the ground of the Dubinin-Stoeckli (DS) equation has been discussed. The DS equation has been shown not to have any universal character. A more general equation of the adsorption isotherm including all cases of isotherms encountered in adsorption studies has been derived.     

A NUMERICAL EXPERIMENT FOR EFFECTS OF OZONE HEATING ON GENERAL CIRCULATION

An ozone conservation equation is added to the global nine-layer general circulationmodel to simulate the heating effect on the upper atmosphere due to the absorption of theultraviolet part of solar radiation by ozone and the changes of temperature, pressure andwind fields caused by ozone heating. The experiment shows that the heating rate by ozoneis much larger than that by other elements such as water vapour in stratosphere. Thetemperature distribution and strength of zonal wind in tropopause and above calculated withozone effect are much different from the results simulated without ozone. The ozone heatingaffects not only the zonal wind but also the meridional wind, so that the Walker Circulationand Hadley Cell are all changed accordingly. Besides, it can be seen that the influences ofozone on the meteorological elements are small in troposphere, while it still makes apparentlyresponse near the surface. Especially, it is much larger above the land than above the ocean.     

LGBTQ+ in STEM: Visibility and Beyond

Lesbian, gay, bisexual, trans, queer (LGBTQ+, “+”=plus other sexes, gender identities, and sexual orientation) people in the STEM fields (STEM=science, technology, engineering, and mathematics) continue to experience discrimination in their workplace. In the last decade, the clamor for safe and diverse spaces continue to rise. Indeed, social media plays a huge part on increasing visibility of the LGBTQ+ community in STEM. LGBTQ+ scientists have not only promoted discourse and raised concerns to the online community, but more importantly, supported each other in platforms such as Twitter. Beyond social media, work at the institutes by LGBTQ+ individuals are also bearing fruit. This piece explores the grassroots work of scientists as they work hand-in-hand with their institute staff and leadership to promote diversity and inclusivity within and beyond their community.     

A comment on SCF energy partitioning schemes

Starting from the symmetry groupG × SU(2) for the special case of negligible spin-orbit coupling, a general character formula is derived for them-tuplet representation, which is realized in the space of state functions ofn-electron systems in fields with symmetryG. Apart from the characters of the initial representation for the single electron space function, the formula only contains the number of particlesn and the multiplicitym.

Herrn Professor Dr. Hermann Hartmann zu seinem 60. Geburtstag gewidmet.     

Phenomenological Kineticsan; an alternative approach

Traditional phenomenological kinetics describes the process rate in terms of the progress degree (mass fraction which has already undergone the change), a, and with a monomial function (or combination of monomial functions for multistep processes) of (1-a), without any connection to the underlying mechanism at the molecular level. The approach proposed in the present work aims at the direct treatment of the experimental data, like DSC records, without suggesting any specific reaction mechanism and excluding any Arrhenius like behaviour. Formal expressions are proposed that include the thermodynamic constraints for any spontaneous process, viz. a negative drop of the Gibbs function throughout the process, and describe the process rate as the result of the effects of a thermodynamic driving force, identified with the drop of the Gibbs function, and of the medium hindrance. This revised version was published online in July 2006 with corrections to the Cover Date.     

面向本科生的“量子世界探秘”通识教育课程改革

量子世界探秘"是面向本科生开设的通识教育改革课程,以"通识"为出发点,以现代科学研究文献成果为依据,从"见识、知识、认识"3个层面论述了量子世界的历史、特征以及发展前景;通过具体实例,探讨了经典世界和量子世界的区别与联系,并分析了课程在激发学生的创新性思维、增强学科交叉意识等方面的作用。