scholarly journals An experimental and theoretical view of energetic C60 cluster bombardment onto molecular solids

2012 ◽  
Vol 45 (1) ◽  
pp. 50-53 ◽  
Author(s):  
Daniel A. Brenes ◽  
Zbigniew Postawa ◽  
Andreas Wucher ◽  
Paul Blenkinsopp ◽  
Barbara J. Garrison ◽  
...  
Keyword(s):  
Molecular Solids ◽  
Cluster Bombardment ◽  
Theoretical View

scholarly journals Fluid Flow and Effusive Desorption: Dominant Mechanisms of Energy Dissipation after Energetic Cluster Bombardment of Molecular Solids

2011 ◽  
Vol 2 (16) ◽  
pp. 2009-2014 ◽  
Author(s):  
Daniel A. Brenes ◽  
Barbara J. Garrison ◽  
Nicholas Winograd ◽  
Zbigniew Postawa ◽  
Andreas Wucher ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Energy Dissipation ◽  
Molecular Solids ◽  
Cluster Bombardment

Quadratic Friction Model for Cluster Bombardment of Molecular Solids

2007 ◽  
Vol 111 (28) ◽  
pp. 10135-10137 ◽  
Author(s):  
Barbara J. Garrison ◽  
Kathleen E. Ryan ◽  
Michael F. Russo, ◽  
Edward J. Smiley ◽  
Zbigniew Postawa
Keyword(s):  
Friction Model ◽  
Molecular Solids ◽  
Cluster Bombardment

Principles of time resolved cars studies of molecular solids

1985 ◽  
Vol 82 ◽  
pp. 153-158 ◽  
Author(s):  
S.P. Velsko ◽  
R.M. Hochstrasser
Keyword(s):  
Molecular Solids ◽  
Time Resolved

Secondary-Cause Autonomy and Divine Motivation

2016 ◽  
Vol 8 (3) ◽  
pp. 75-92
Author(s):  
Christian Schröer
Keyword(s):  
Human Dignity ◽  
Human Action ◽  
Thomas Aquinas ◽  
Moral Autonomy ◽  
Human Beings ◽  
Religious Motivation ◽  
Basic Principles ◽  
Theoretical View ◽  
Human Autonomy ◽  
The Voice

An act-theoretical view on the profile of responsibility discourse shows in what sense not only all kinds of technical, pragmatic and moral reason, but also all kinds of religious motivation cannot justify a human action sufficiently without acknowledgment to three basic principles of human autonomy as supreme limiting conditions that are human dignity, sense, and justifiability. According to Thomas Aquinas human beings ultimately owe their moral autonomy to a divine creator. So this autonomy can be considered as an expression of secondary-cause autonomy and as the voice of God in the enlightened conscience.

A Robust, Porous and Solution-Processable Molecular Crystal Containing Multiple Donor-Acceptor Units

2019 ◽  
Author(s):  
Shengxian Cheng ◽  
Xiaoxia Ma, ◽  
Yonghe He ◽  
Jun He ◽  
Matthias Zeller ◽  
...  
Keyword(s):  
Molecular Crystal ◽  
Bulk Sample ◽  
Intermolecular Forces ◽  
Close Packing ◽  
Molecular Solids ◽  
Molecular Scaffold ◽  
Excellent Thermal Stability ◽  
Crystalline Order ◽  
Donor Acceptor ◽  
Open Packing

We report a curious porous molecular crystal that is devoid of the common traits of related systems. Namely, the molecule does not rely on directional hydrogen bonds to enforce open packing; and it offers neither large concave faces (i.e., high internal free volume) to frustrate close packing, nor any inherently built-in cavity like in the class of organic cages. Instead, the permanent porosity (as unveiled by the X-ray crystal structure and CO<sub>2</sub> sorption studies) arises from the strong push-pull units built into a Sierpinski-like molecule that features four symmetrically backfolded (<b>SBF</b>) side arms. Each side arm consists of the 1,1,4,4-tetracyanobuta-1,3-diene acceptor (TCBD) coupled with the dimethylaminophenyl donor, which is conveniently installed by a cycloaddition-retroelectrocyclization (CA-RE) reaction. Unlike the poor/fragile crystalline order of many porous molecular solids, the molecule here readily crystallizes and the crystalline phase can be easily deposited into thin films from solutions. Moreover, both the bulk sample and thin film exhibit excellent thermal stability with the porous crystalline order maintained even at 200 °C. The intermolecular forces underlying this robust porous molecular crystal likely include the strong dipole interactions and the multiple C···N and C···O short contacts afforded by the strongly donating and accepting groups integrated within the rigid molecular scaffold.

Patients with amnestic MCI Fail to Adapt Executive Control When Repeatedly Tested with Semantic Verbal Fluency Tasks

2021 ◽  
pp. 1-8
Author(s):  
Johannes Tröger ◽  
Hali Lindsay ◽  
Mario Mina ◽  
Nicklas Linz ◽  
Stefan Klöppel ◽  
...  
Keyword(s):  
Executive Control ◽  
Verbal Fluency ◽  
Fixed Time ◽  
Semantic Space ◽  
Semantic Knowledge ◽  
Semantic Verbal Fluency ◽  
Amnestic Mci ◽  
Retrieval Processes ◽  
Theoretical View ◽  
First Time

Abstract Objective: Semantic verbal fluency (SVF) tasks require individuals to name items from a specified category within a fixed time. An impaired SVF performance is well documented in patients with amnestic Mild Cognitive Impairment (aMCI). The two leading theoretical views suggest either loss of semantic knowledge or impaired executive control to be responsible. Method: We assessed SVF 3 times on 2 consecutive days in 29 healthy controls (HC) and 29 patients with aMCI with the aim to answer the question which of the two views holds true. Results: When doing the task for the first time, patients with aMCI produced fewer and more common words with a shorter mean response latency. When tested repeatedly, only healthy volunteers increased performance. Likewise, only the performance of HC indicated two distinct retrieval processes: a prompt retrieval of readily available items at the beginning of the task and an active search through semantic space towards the end. With repeated assessment, the pool of readily available items became larger in HC, but not patients with aMCI. Conclusion: The production of fewer and more common words in aMCI points to a smaller search set and supports the loss of semantic knowledge view. The failure to improve performance as well as the lack of distinct retrieval processes point to an additional impairment in executive control. Our data did not clearly favour one theoretical view over the other, but rather indicates that the impairment of patients with aMCI in SVF is due to a combination of both.

A THEORETICAL VIEW OF REVENUE SHARING GRANTS

1979 ◽  
Vol 32 (2) ◽  
pp. 173-184
Author(s):  
RONALD C. FISHER
Keyword(s):  
Revenue Sharing ◽  
Theoretical View
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