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131.
Chetna Narayan 《Educational gerontology》2013,39(9):782-787
This study was designed to determine current young adults' attitudes toward older adults and to explore, more specifically, whether they hold different attitudes towards older men and women. An additional objective was to examine the association between knowledge of aging processes and attitudes towards older adults. A total of 405 (210 males, 195 females) undergraduate students at a small Midwestern university were assessed on their attitudes toward an older male and an older female and on their knowledge of aging. Data analyses revealed that the participants showed more positive, rather than negative, attitudes towards older adults, and they rated older women significantly more positively than older men. No relationship was found between knowledge of aging processes and attitudes toward aging. Implications of these findings are discussed. 相似文献
132.
133.
Ce Huang Awadhesh Narayan Enze Zhang Xiaoyi Xie Linfeng Ai Shanshan Liu Changjiang Yi Youguo Shi Stefano Sanvito Faxian Xiu 《国家科学评论(英文版)》2020,7(9):1468
WTe2, as a type-II Weyl semimetal, has 2D Fermi arcs on the (001) surface in the bulk and 1D helical edge states in its monolayer. These features have recently attracted wide attention in condensed matter physics. However, in the intermediate regime between the bulk and monolayer, the edge states have not been resolved owing to its closed band gap which makes the bulk states dominant. Here, we report the signatures of the edge superconductivity by superconducting quantum interference measurements in multilayer WTe2 Josephson junctions and we directly map the localized supercurrent. In thick WTe2 (, the supercurrent is uniformly distributed by bulk states with symmetric Josephson effect (). In thin WTe2 (10 nm), however, the supercurrent becomes confined to the edge and its width reaches up to and exhibits non-symmetric behavior . The ability to tune the edge domination by changing thickness and the edge superconductivity establishes WTe2 as a promising topological system with exotic quantum phases and a rich physics. 相似文献
134.
Priya Narayan Parker 《About Campus》2006,11(1):17-23
Sustained Dialogue, used in the past to ease international tensions, is finding its way into colleges and universities that wish to change unhealthy race‐based attitudes and behaviors. The campus approach brings small groups of students from widely different backgrounds together for a year of deep conversation. 相似文献
135.
Kuo-yuan Chung Narayan Chandra Mishra Chen-chi Wang Feng-hui Lin Keng-hui Lin 《Biomicrofluidics》2009,3(2)
In this paper, we demonstrate for the first time the technique to using microfluidics to fabricate tissue engineering scaffolds with uniform pore sizes. We investigate both the bubble generation of the microfluidic device and the application of foam as a tissue engineering scaffold. Our microfluidic device consists of two concentric tapered channels, which are made by micropipettes. Nitrogen gas and aqueous alginate solution with Pluronic® F127 surfactant are pumped through the inner and the outer channels, respectively. We observe rich dynamic patterns of bubbles encapsulated in the liquid droplets. The size of the bubble depends linearly on the gas pressure and inversely on the liquid flow rate. In addition, monodisperse bubbles self-assemble into crystalline structures. The liquid crystalline foams are further processed into open-cell solid foams. The novel foam gel was used as a scaffold to culture chondrocytes. 相似文献
136.
137.
The 2011 Nobel Prize in Physics has been awarded to S Perlmutter, A Riess and B Schmidt for their path-breaking discovery
that the rate of expansion of the universe is increasing with time. The trio used Type Ia supernovae (SNe Ia) as standard
candles to estimate their luminositydistances. To appreciate some of the far-reaching implications of their work, I have provided
an elementary exposition of the general theory of relativity, accelerated expansion of the universe, luminosity-distance,
SNe Ia and the cosmological constant problem. 相似文献
138.
Jyoti Das 《Resonance》2010,15(6):573-580
Loci of points in the Euclidean plane are determined from prescribed relations of the points with given points, and/or, lines.
The dependence of these relations on parameters lead to the diffrential equations representing the family of loci under concern.
Incidentally most of the diffrential equations thus obtained are nonlinear ordinary diffrential equations. 相似文献
139.
Jens Stenger Narayan Khandekar Annie Wilker Katya Kallsen Daniel P. Kirby Katherine Eremin 《文物保护研究》2016,61(6):331-347
Mark Rothko's Harvard Murals are a series of paintings on canvas commissioned by Harvard University and created in the early 1960s. The present study investigates Rothko's creative process, materials, and technique with ultraviolet and infrared imaging, analytical chemistry, cross-sectional analysis, and comparisons with the literature. Infrared and Raman spectroscopy imaging of cross sections help with the chemical mapping of the paint stratifications. A comparison of paper studies, studies on canvas, and the final five works installed give a detailed insight into Rothko's editing process. The intimate relationship between works on paper and canvas is traced by uncovering a back and forth between the two media, and the mixing of dry pigment with binder is a common theme for works on both supports. Motif developments, changes, and distinct painting campaigns become apparent with ultraviolet induced visible fluorescence imaging and infrared reflected infrared digital photography. Color measurements and microfading experiments give insight into the stability and light sensitivity of the materials used by Rothko in the Harvard Murals. 相似文献
140.
Jens Stenger Narayan Khandekar Ramesh Raskar Santiago Cuellar Ankit Mohan Rudolf Gschwind 《文物保护研究》2016,61(6):348-361
A treatment with projected light for Mark Rothko's Harvard Murals (1962) is proposed. The group of five paintings on canvas has changed color due to the presence of a fugitive red pigment and excessive exposure to natural light in a room with large windows. For the conservation of Rothko's Harvard room, it is brought into context within his other commissions and environments. The original color of the works is determined by the digital restoration of contemporary photographs. With a camera projector system a compensation image is calculated that is projected onto the original canvas resulting in a restored color appearance. This approach of inpainting with light is compared with considerations of cleaning and inpainting in conventional conservation treatments. Overall lighting and architecture including the unusual wall color carefully chosen by Rothko play a key role in the treatment of the Mural cycle as an environment. 相似文献