نتایج جستجو برای: absorption

تعداد نتایج: 132220  

2011
L. V. Rizzo A. L. Correia M. O. Andreae

L. V. Rizzo, A. L. Correia, P. Artaxo, A. S. Procópio, and M. O. Andreae Institute of Environmental, Chemical and Pharmaceutics Sciences, Department of Earth and Exact Sciences, Federal University of São Paulo, Brazil Institute of Physics, University of São Paulo, Brazil Department of Sanitary and Environmental Engineering, Federal University of Juiz de Fora, Juiz de Fora, Brazil Max Planck Ins...

Journal: :Nano letters 2015
Hiral Patel Robin W Havener Lola Brown Yufeng Liang Li Yang Jiwoong Park Matt W Graham

When two sheets of graphene stack in a twisted bilayer graphene (tBLG) configuration, the resulting constrained overlap between interplanar 2p orbitals produce angle-tunable electronic absorption resonances. By applying a novel combination of multiphoton transient absorption (TA) microscopy and TEM, we resolve the electronic structure and ensuing relaxation by probing resonant excitations of si...

Journal: :Nanoscale 2014
Lingling Zheng Yingzhuang Ma Saisai Chu Shufeng Wang Bo Qu Lixin Xiao Zhijian Chen Qihuang Gong Zhaoxin Wu Xun Hou

Recently, highly efficient solar cells based on organic-inorganic perovskites have been intensively reported for developing fabricating methods and device structures. Additional power conversion efficiency should be gained without increasing the thickness and the complexity of the devices to accord with practical applications. In this paper, a rough interface between perovskite and HTM was fabr...

Journal: :Physical review letters 2005
A Scherz E K U Gross H Appel C Sorg K Baberschke H Wende K Burke

The 2p-3d core-hole interaction in the L2.3 absorption spectra of the transition metals is treated within time-dependent density functional theory. A simple three-level model explains the origin of the strong deviations from the one-particle branching ratio and yields matrix elements of the unknown exchange-correlation kernel directly from experiment.

2016
Zhenyi Zhang Kuichao Liu Zhiqing Feng Yanan Bao Bin Dong

We have realized in-situ growth of ultrathin ZnIn2S4 nanosheets on the sheet-like g-C3N4 surfaces to construct a "sheet-on-sheet" hierarchical heterostructure. The as-synthesized ZnIn2S4/g-C3N4 heterojunction nanosheets exhibit remarkably enhancement on the photocatalytic activity for H2 production. This enhanced photoactivity is mainly attributed to the efficient interfacial transfer of photoi...

Journal: :Physical review letters 2007
Wojciech Gawelda Van-Thai Pham Maurizio Benfatto Yuri Zaushitsyn Maik Kaiser Daniel Grolimund Steven L Johnson Rafael Abela Andreas Hauser Christian Bressler Majed Chergui

Structural changes of the iron(II)-tris-bipyridine ([Fe(II)(bpy)(3)](2+)) complex induced by ultrashort pulse excitation and population of its short-lived (< or =0.6 ns) quintet high spin state have been detected by picosecond x-ray absorption spectroscopy. The structural relaxation from the high spin to the low spin state was followed over the entire lifetime of the excited state. A combined a...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1383

چکیده ندارد.

Journal: :iranian journal of toxicology 0
zohreh hosseini student of veterinary medicine, shahid chamran university of ahvaz, iran. mohammad khosravi department of pathobiology, shahid chamran university of ahvaz, iran. masoud ghorbanpoor department of pathobiology, shahid chamran university of ahvaz, iran. mansour mayahi department of clinical sciences, shahid chamran university of ahvaz, iran.

background: to explore the oral absorption of scorpion venom an elisa were designed in this study. scorpions and their venom were been used for centuries as medical treatments in traditional medicine. the oral administration of drug referred as the convenient way, as there was not any publication about gastro-intestinal absorption of scorpion venom; this experiment checked oral absorption of me...

Journal: :iranian journal of parasitology 0
s baloch department of zoology, university of sindh, jamshoro, pakistan sa memon dr ma kazi, institute of chemistry, university of sindh, jamshoro, pakistan gs gachal department of zoology, university of sindh, jamshoro, pakistan m baloch dr ma kazi, institute of chemistry, university of sindh, jamshoro, pakistan

background: in the present study, blood serum level of metals were determined in malarial pa­tients and compared with those in the normal subjects without complication using atomic absorp­tion spectrometer. methods: for the determination of these metals twelve intravenous blood samples each from re­ferred malarial patients and a group of normal subjects were collected and immediately centri­fug...

Journal: :Age and Ageing 1981

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