Structural and Dynamical Properties of Phase I of Solid Ammonia Borane

2014 ◽  
Vol 118 (33) ◽  
pp. 19266-19272 ◽  
Author(s):  
Liancheng Wang ◽  
Qingchun Wu ◽  
Aiping Zhou
Keyword(s):  
Phase I ◽  
Ammonia Borane ◽  
Dynamical Properties ◽  
Solid Ammonia

Structural and dynamical properties of solid ammonia borane under high pressure

2011 ◽  
Vol 134 (2) ◽  
pp. 024517 ◽  
Author(s):  
Liancheng Wang ◽  
Kuo Bao ◽  
Xing Meng ◽  
Xiaoli Wang ◽  
Tingting Jiang ◽  
...  
Keyword(s):  
High Pressure ◽  
Ammonia Borane ◽  
Dynamical Properties ◽  
Solid Ammonia

scholarly journals The Onset of Dehydrogenation in Solid Ammonia Borane: An Ab Initio Metadynamics Study

2019 ◽  
Vol 58 (12) ◽  
pp. 3976-3980 ◽  
Author(s):  
Valerio Rizzi ◽  
Daniela Polino ◽  
Emilia Sicilia ◽  
Nino Russo ◽  
Michele Parrinello
Keyword(s):  
Ab Initio ◽  
Ammonia Borane ◽  
Solid Ammonia

Kinetics study of solid ammonia borane hydrogen release – modeling and experimental validation for chemical hydrogen storage

2014 ◽  
Vol 16 (17) ◽  
pp. 7959-7968 ◽  
Author(s):  
Young Joon Choi ◽  
Ewa C. E. Rönnebro ◽  
Scot Rassat ◽  
Abhi Karkamkar ◽  
Gary Maupin ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Experimental Validation ◽  
Ammonia Borane ◽  
Hydrogen Release ◽  
Kinetics Study ◽  
Hydrogen Capacity ◽  
Chemical Hydrogen Storage ◽  
Solid Ammonia

Hydrogen capacity and bulk kinetics comparisons of ammonia borane at 160 °C, 200 °C, 250 °C and 300 °C.

Hydrolysis of solid ammonia borane

2010 ◽  
Vol 195 (13) ◽  
pp. 4030-4035 ◽  
Author(s):  
Umit B. Demirci ◽  
Philippe Miele
Keyword(s):  
Ammonia Borane ◽  
Hydrolysis Of ◽  
Solid Ammonia

scholarly journals The Onset of Dehydrogenation in Solid Ammonia Borane: An Ab Initio Metadynamics Study

2019 ◽  
Vol 131 (12) ◽  
pp. 4016-4020 ◽  
Author(s):  
Valerio Rizzi ◽  
Daniela Polino ◽  
Emilia Sicilia ◽  
Nino Russo ◽  
Michele Parrinello
Keyword(s):  
Ab Initio ◽  
Ammonia Borane ◽  
Solid Ammonia

Understanding Vibrational Anharmonicity and Phonon Dispersion in Solid Ammonia Borane

2012 ◽  
Vol 116 (9) ◽  
pp. 5926-5931 ◽  
Author(s):  
Shawn M. Kathmann ◽  
Christopher J. Mundy ◽  
Gregory K. Schenter ◽  
Tom Autrey ◽  
Philippe C. Aeberhard ◽  
...  
Keyword(s):  
Phonon Dispersion ◽  
Ammonia Borane ◽  
Vibrational Anharmonicity ◽  
Solid Ammonia

From the Oort cloud to Halley-type comets

1999 ◽  
Vol 173 ◽  
pp. 327-338 ◽  
Author(s):  
J.A. Fernández ◽  
T. Gallardo
Keyword(s):  
Total Population ◽  
Complex Function ◽  
Dynamical Evolution ◽  
Oort Cloud ◽  
Capture Process ◽  
Influx Rate ◽  
Short Period ◽  
Dynamical Properties ◽  
Orbital Periods ◽  
Probability Of Capture

AbstractThe Oort cloud probably is the source of Halley-type (HT) comets and perhaps of some Jupiter-family (JF) comets. The process of capture of Oort cloud comets into HT comets by planetary perturbations and its efficiency are very important problems in comet ary dynamics. A small fraction of comets coming from the Oort cloud − of about 10−2− are found to become HT comets (orbital periods < 200 yr). The steady-state population of HT comets is a complex function of the influx rate of new comets, the probability of capture and their physical lifetimes. From the discovery rate of active HT comets, their total population can be estimated to be of a few hundreds for perihelion distancesq <2 AU. Randomly-oriented LP comets captured into short-period orbits (orbital periods < 20 yr) show dynamical properties that do not match the observed properties of JF comets, in particular the distribution of their orbital inclinations, so Oort cloud comets can be ruled out as a suitable source for most JF comets. The scope of this presentation is to review the capture process of new comets into HT and short-period orbits, including the possibility that some of them may become sungrazers during their dynamical evolution.

A Phonomotor Approach to Apraxia of Speech Treatment

2020 ◽  
Vol 29 (4) ◽  
pp. 2109-2130
Author(s):  
Lauren Bislick
Keyword(s):  
Phase I ◽  
Treatment Effects ◽  
Single Case ◽  
Motor Planning ◽  
The Other ◽  
Multimodal Approach ◽  
Apraxia Of Speech ◽  
Duration Of Treatment ◽  
Treatment Gains ◽  
Future Work

Purpose This study continued Phase I investigation of a modified Phonomotor Treatment (PMT) Program on motor planning in two individuals with apraxia of speech (AOS) and aphasia and, with support from prior work, refined Phase I methodology for treatment intensity and duration, a measure of communicative participation, and the use of effect size benchmarks specific to AOS. Method A single-case experimental design with multiple baselines across behaviors and participants was used to examine acquisition, generalization, and maintenance of treatment effects 8–10 weeks posttreatment. Treatment was distributed 3 days a week, and duration of treatment was specific to each participant (criterion based). Experimental stimuli consisted of target sounds or clusters embedded nonwords and real words, specific to each participants' deficit. Results Findings show improved repetition accuracy for targets in trained nonwords, generalization to targets in untrained nonwords and real words, and maintenance of treatment effects at 10 weeks posttreatment for one participant and more variable outcomes for the other participant. Conclusions Results indicate that a modified version of PMT can promote generalization and maintenance of treatment gains for trained speech targets via a multimodal approach emphasizing repeated exposure and practice. While these results are promising, the frequent co-occurrence of AOS and aphasia warrants a treatment that addresses both motor planning and linguistic deficits. Thus, the application of traditional PMT with participant-specific modifications for AOS embedded into the treatment program may be a more effective approach. Future work will continue to examine and maximize improvements in motor planning, while also treating anomia in aphasia.

Sign in / Sign up

Export Citation Format

Share Document