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Social Rhythms and Nocturnal Routines in Community Dwelling Older Adults
Julie Behan,David Prendergast,Lorcan Wals,Brenda Quigley 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2008 International Journal of Assistive Robotics and Me Vol.9 No.4
This paper describes a pilot carried out by The Digital Health Group in Intel, in which daily social rhythms of community dwelling older adults were examined and related to objectively and subjectively recorded sleep measurements. Ten relatively healthy independently living older adults were interviewed using ethnographic processes to determine a baseline of social activities, behaviours and nocturnal sleeping routines. Each home was fitted with six sensing elements to establish and monitor daily and nocturnal activities. Social behaviours were explored through social contact through phone conversation and human interaction, through mobility, inside and outside the home, and through a person's self reported internal state (how they feel each day). Nocturnal rhythms were examined through actigraph watches and bed pressure sensing devices. A preliminary sub-set of the results are presented in this paper in the form of case studies showing subjective and objective data sets and their comparison to social routines.
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Social Rhythms and Nocturnal Routines in Community Dwelling Older Adults
Julie Behan,David Prendergast,Lorcan Walsh,Brenda Quigley 동국대학교 정보융합기술원 2008 International Journal of Assistive Robotics and Sy Vol.9 No.4
This paper describes a pilot carried out by The Digital Health Group in Intel, in which daily social rhythms of community dwelling older adults were examined and related to objectively and subjectively recorded sleep measurements. Ten relatively healthy independently living older adults were interviewed using ethnographic processes to determine a baseline of social activities, behaviours and nocturnal sleeping routines. Each home was fitted with six sensing elements to establish and monitor daily and nocturnal activities. Social behaviours were explored through social contact through phone conversation and human interaction, through mobility, inside and outside the home, and through a person’s self reported internal state (how they feel each day). Nocturnal rhythms were examined through actigraph watches and bed pressure sensing devices. A preliminary sub-set of the results are presented in this paper in the form of case studies showing subjective and objective data sets and their comparison to social routines.
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Nanostructured Metal Hydrides for Hydrogen Storage
Schneemann, Andreas,White, James L.,Kang, ShinYoung,Jeong, Sohee,Wan, Liwen F.,Cho, Eun Seon,Heo, Tae Wook,Prendergast, David,Urban, Jeffrey J.,Wood, Brandon C.,Allendorf, Mark D.,Stavila, Vitalie American Chemical Society 2018 Chemical reviews Vol.118 No.22
<P>Knowledge and foundational understanding of phenomena associated with the behavior of materials at the nanoscale is one of the key scientific challenges toward a sustainable energy future. Size reduction from bulk to the nanoscale leads to a variety of exciting and anomalous phenomena due to enhanced surface-to-volume ratio, reduced transport length, and tunable nanointerfaces. Nanostructured metal hydrides are an important class of materials with significant potential for energy storage applications. Hydrogen storage in nanoscale metal hydrides has been recognized as a potentially transformative technology, and the field is now growing steadily due to the ability to tune the material properties more independently and drastically compared to those of their bulk counterparts. The numerous advantages of nanostructured metal hydrides compared to bulk include improved reversibility, altered heats of hydrogen absorption/desorption, nanointerfacial reaction pathways with faster rates, and new surface states capable of activating chemical bonds. This review aims to summarize the progress to date in the area of nanostructured metal hydrides and intends to understand and explain the underpinnings of the innovative concepts and strategies developed over the past decade to tune the thermodynamics and kinetics of hydrogen storage reactions. These recent achievements have the potential to propel further the prospects of tuning the hydride properties at nanoscale, with several promising directions and strategies that could lead to the next generation of solid-state materials for hydrogen storage applications.</P> [FIG OMISSION]</BR>
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Structural dependencies of protein backbone<sup>2</sup><i>J</i><sub>NC′</sub>couplings
Juranić,, Nenad,Dannenberg, J.J.,Cornilescu, Gabriel,Salvador, Pedro,Atanasova, Elena,Ahn, Hee-Chul,Macura, Slobodan,Markley, John L.,Prendergast, Franklyn G. Wiley (John WileySons) 2008 Protein science Vol.17 No.4
<P>Protein folding can introduce strain in peptide covalent geometry, including deviations from planarity that are difficult to detect, especially for a protein in solution. We have found dependencies in protein backbone (2)J(NC') couplings on the planarity and the relative orientation of the sequential peptide planes. These dependences were observed in experimental (2)J(NC') couplings from seven proteins, and also were supported by DFT calculations for a model tripeptide. Findings indicate that elevated (2)J(NC') couplings may serve as reporters of structural strain in the protein backbone imposed by protein folds. Such information, supplemented with the H-bond strengths derived from (h3)J(NC') couplings, provides useful insight into the overall energy profile of the protein backbone in solution.</P>
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Wan, Liwen F.,Cho, Eun Seon,Marangoni, Tomas,Shea, Patrick,Kang, ShinYoung,Rogers, Cameron,Zaia, Edmond,Cloke, Ryan R.,Wood, Brandon C.,Fischer, Felix R.,Urban, Jeffrey J.,Prendergast, David American Chemical Society 2019 Chemistry of materials Vol.31 No.8
<P>Hydrogen is a long-term clean energy carrier that enables completely carbon-free energy production. However, practical implementation of hydrogen fuel technologies is restricted because of lack of safe and high-performing storage materials. Here, we report Mg nanocrystals encapsulated by narrow, bottom-up synthesized graphene nanoribbons (GNRs) as environmentally stable and high-capacity hydrogen storage materials. As an encapsulation medium, GNRs offer similar functionalities as reduced graphene oxide to protect the encapsulated Mg nanocrystals from extensive oxidation, while allowing penetrations of hydrogen. In addition, the GNRs can be edge functionalized to tune the (de-)hydrogenation kinetics, in particular for the processes occurred at the GNR-Mg interfaces. In this work, four different types of edge-functional groups were introduced into GNRs with the goal of comparing their cycling performances because of edge functionalization. On the basis of detailed kinetic analysis coupled with first-principles calculations, we propose that edge-functional groups can contribute to the reduction of kinetic barriers for surface hydrogen reactions at the interface with the GNR by stabilizing surface defects. Furthermore, the GNR-Mg composite exhibited higher hydrogen storage capacity (7.1 wt % of hydrogen based on the total composite) compared with the current literature while demonstrating long-term air stability. This work suggests that the rational design of edge-functional groups in graphene derivatives can provide a general and novel paradigm for simultaneous encapsulation and hydrogen storage catalysis in simple metal or complex metal nanocrystals.</P> [FIG OMISSION]</BR>
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