نتایج جستجو برای: structural enhancement

تعداد نتایج: 518161  

2003
YU-QING LOU ZUHUI FAN

Multi-wavelength observations from radio to soft X-ray bands of large-scale galactic spiral structures offer synthesized and comprehensive views of nearby disk galaxies. In the presence of a massive dark-matter halo, the density-wave dynamics on galactic scales involves the stellar disk, the gas disk of interstellar medium (ISM), the magnetic field, and the cosmic-ray gas (CRG). In this paper, ...

Journal: :Investigative ophthalmology & visual science 2015
Rebecca M Schur Li Sheng Bhubanananda Sahu Guanping Yu Songqi Gao Xin Yu Akiko Maeda Krzysztof Palczewski Zheng-Rong Lu

PURPOSE Apply manganese-enhanced magnetic resonance imaging (MEMRI) to assess ion channel activity and structure of retinas from mice subject to light-induced retinal degeneration treated with prophylactic agents. METHODS Abca4(-/-)Rdh8(-/-) double knockout mice with and without prophylactic retinylamine (Ret-NH2) treatment were illuminated with strong light. Manganese-enhanced MRI was used t...

2014
Junming Zhang Boya Lai Zuxin Chen Sheng Chu Guang Chu Rufang Peng

Au and Ag hybrid hexagonal nanodisks were synthesized on ZnO nanorods' (0002) surface via a new two-step deposition-annealing method. The structural, compositional, as well as optical investigations were carried out systematically to find out the nanodisks' formation mechanism and optical enhancement effect. It was shown that the core-shell Au/Ag nanodisk can be formed under rapid annealing tem...

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2006
Yuda Zong Junyu Guo Tianyi Ke Aaron M Mohs Dennis L Parker Zheng-Rong Lu

The purpose of this study is to investigate how the structures of polydisulfide Gd(III) complexes affect their pharmacokinetics and in vivo contrast enhancement as biodegradable macromolecular MRI contrast agents. A negatively charged polydisulfide Gd(III) complex, (Gd-DTPA)-cystine copolymers (GDCP), and a neutral agent, (Gd-DTPA)-cystine diethyl ester copolymers (GDCEP), with different molecu...

Journal: :Materials Science 2021

To the article “Enhancement of Crack Resistance Si36N4 −Y2O3 Ceramics and Its Structural Metallurgical Aspects,” by V. D. Vasyliv, O. M. Romaniv, I. Zalite, Yurkevieh, Vol. 33, No. 3, pp. 323–330, May, 1997

Journal: :Chemical communications 2013
Soojung Choi Seung Hyun Chae Jicheol Shin Youngmee Kim Sung-Jin Kim Dong Hoon Choi Suk Joong Lee

OFET devices based on single-crystals of two different porphyrin derivatives display excellent mobilities of 2.57 and 0.48 cm(2) V(-1) s(-1). Although they generate similar J-aggregations, the dramatic enhancement of mobility obtained using porphyrin 1 is due to the well-confined secondary structural arrangement caused by substituents on the porphyrin ring.

Journal: :Chemical communications 2014
Meng Zhang Li-Juan Yu Yi-Fan Huang Jia-Wei Yan Guo-Kun Liu De-Yin Wu Zhong-Qun Tian Bing-Wei Mao

We employ, for the first time, a shell-isolated nanoparticle-enhancement strategy to extend Raman spectroscopy studies to single crystal electrode surfaces in ionic liquids, and combine density functional theory (DFT) calculations to elucidate the structural details of the imidazolium-based ionic liquid-Au single crystal electrode interfaces.

Journal: :Chemical communications 2012
Lin-Juan Zhang Jian-Qiang Wang Jiong Li Jing Zhou Wu-Peng Cai Jie Cheng Wei Xu Guangzhi Yin Xiang Wu Zheng Jiang Shuo Zhang Zi-Yu Wu

The modulation of the distribution of magnetic ions embedded in the host is crucial for the functionality of dilute magnetic semiconductors. Through an element-specific structural characterization, we observe the formation and enhancement of an unrevealed Co-doped ZnO phase and consequently magnetic properties from paramagnetism to ferromagnetism are controlled by surface-modification.

2007
Alexei A. Morozov

The convergence of logic and visual languages is recognized as a promising approach for both the logic programming automation and enhancement of visual modeling/programming methods. The distinction of our approach is in that we unite the Actor Prolog concurrent object-oriented logic language [1,2,3] with the Structural Analysis and Design Technique (SADT) diagrams to obtain new issues in the fo...

2009
Sarab Preet Singh P. Srivastava Vijaya Prakash

In this work we report room-temperature photoluminescence from as-deposited hydrogenated silicon nitride films due to silicon nanocrystals/structural disorder. A systematic study of fabrication parameters and post-heat treatment on the optical features has been done. Enhancement in optical constant on annealing is attributed to phase separation into c-Si and other phases.

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