Surface Chemical Composition Analysis in Polystyrene/Poly(vinyl methyl ether) Blend Films by UV Reflection Spectroscopy

2001 ◽  
Vol 34 (3) ◽  
pp. 599-604 ◽  
Author(s):  
Sangmook Lee ◽  
Chong Sook P. Sung
Keyword(s):  
Chemical Composition ◽  
Composition Analysis ◽  
Surface Chemical ◽  
Reflection Spectroscopy ◽  
Vinyl Methyl ◽  
Blend Films ◽  
Vinyl Methyl Ether ◽  
Surface Chemical Composition ◽  
Chemical Composition Analysis ◽  
Uv Reflection

Fractionation and characterization of lignin from waste rice straw: Biomass surface chemical composition analysis

2020 ◽  
Vol 145 ◽  
pp. 795-803 ◽  
Author(s):  
Shubhangi De ◽  
Shubham Mishra ◽  
Elangovan Poonguzhali ◽  
Mathur Rajesh ◽  
Krishnamurthi Tamilarasan
Keyword(s):  
Chemical Composition ◽  
Rice Straw ◽  
Composition Analysis ◽  
Surface Chemical ◽  
Surface Chemical Composition ◽  
Chemical Composition Analysis

Surface chemical composition analysis of heat-treated bamboo

2016 ◽  
Vol 371 ◽  
pp. 383-390 ◽  
Author(s):  
Fan-dan Meng ◽  
Yang-lun Yu ◽  
Ya-mei Zhang ◽  
Wen-ji Yu ◽  
Jian-min Gao
Keyword(s):  
Chemical Composition ◽  
Composition Analysis ◽  
Surface Chemical ◽  
Surface Chemical Composition ◽  
Heat Treated ◽  
Chemical Composition Analysis

scholarly journals Correction: Yu, D.Q., et al. Microscopic Characteristic and Chemical Composition Analysis of Three Medicinal Plants and Surface Frosts. Molecules 2019, 24, 4548

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 379
Author(s):  
Da Qing Yu ◽  
Xiao Jing Han ◽  
Ting Yu Shan ◽  
Rui Xu ◽  
Jin Hu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Composition Analysis ◽  
Microscopic Characteristic ◽  
Chemical Composition Analysis

The authors would like to correct an error in the title paper [...]

scholarly journals Spectra of M Dwarfs - Dimmed by Dust

1998 ◽  
Vol 11 (1) ◽  
pp. 439-440
Author(s):  
T. Tsuji ◽  
K. Ohnaka ◽  
W. Aoki ◽  
H.R.A. Jones
Keyword(s):  
Chemical Composition ◽  
Brown Dwarfs ◽  
Surface Chemical ◽  
Basic Information ◽  
M Dwarfs ◽  
Surface Chemical Composition ◽  
Molecular Lines ◽  
Low Mass

Spectra of M dwarfs are rich in atomic and molecular lines. These spectra provide such basic information as Teff (or radius), log g (or mass), surface chemical composition, and something more (e.g. activity) if properly interpreted. It is recognized, however, that spectra of M dwarfs are already dimmed by the dust formed in their photospheres (Tsuji et al. 1996a) and this effect, which has been overlooked until recently, should be taken into account in any interpretation and analysis of the spectra of very low mass objects (VLMOs) including late M dwarfs and brown dwarfs.

Chemical composition analysis of carbohydrate fragmentation products

2021 ◽  
Vol 156 ◽  
pp. 105112
Author(s):  
Samin Fathalinejad ◽  
Esben Taarning ◽  
Peter Christensen ◽  
Jan H. Christensen
Keyword(s):  
Chemical Composition ◽  
Composition Analysis ◽  
Chemical Composition Analysis

scholarly journals Surface Texture of Microcrystalline Tunnel-Structured Manganese(IV) Oxides: Nitrogen Sorptiometry and Electron Microscopy Studies

2002 ◽  
Vol 20 (7) ◽  
pp. 619-632 ◽  
Author(s):  
A.A. Ali ◽  
F.A. Al-Sagheer ◽  
M.I. Zaki
Keyword(s):  
Electron Microscopy ◽  
Chemical Composition ◽  
Surface Texture ◽  
Particle Morphology ◽  
High Resolution Electron Microscopy ◽  
Surface Chemical ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Surface Chemical Composition ◽  
Resolution Electron

Three different modifications of manganese(IV) oxide, viz. cryptomelane, nsutite and todorokite-like, were synthesized by hydrothermal methods. The bulk chemical composition, phase composition, crystalline structure and particle morphology of the resulting materials were determined by thermogravimetry, atomic absorption spectroscopy, X-ray diffractometry, infrared spectroscopy and scanning electron microscopy. The surface chemical composition, texture and structure were assessed using X-ray photoelectron microscopy, nitrogen sorptiometry and high-resolution electron microscopy. The results highlighted the hydrothermal conditions under which such tunnel-structured modifications of manganese(IV) oxide can be successfully synthesized. Moreover, they revealed that (i) the bulk was microcrystalline, (ii) the crystallites were either fibrils (cryptomelane and nsutite) or rod-like (todorokite) with low-index exposed facets, (iii) the surface chemical composition mostly reflected that of the bulk and (iv) the surface texture was linked with high specific areas, slit-shaped mesopores associated with particle interstices and micropores which allowed surface accessibility to the bulk tunnels of the test oxides. The application of such test oxides as shape-selective oxidation catalysts appears worthy of investigation.

Research on Process Mineralogy of Potassium-Rich Shale

2010 ◽  
Vol 158 ◽  
pp. 197-203 ◽  
Author(s):  
Jie Liu ◽  
Yue Xin Han ◽  
Wan Zhong Yin
Keyword(s):  
Chemical Composition ◽  
Mineral Composition ◽  
Potassium Feldspar ◽  
Composition Analysis ◽  
Research Results ◽  
Dsc Analyses ◽  
Process Mineralogy ◽  
Mineral Compositions ◽  
Chemical Composition Analysis

The process mineralogy of potassium-rich shale from Chaoyang of Liaoning, China, was studied. Research results showed there are much less variety and smaller quantities in mineral compositions. Calculated mineral composition by means of chemical composition analysis combined with XRD, MLA, IR and TG-DSC analyses showed that main minerals with were Potassium-feldspar, muscovite, biotite and illite, and gangue minerals were quartz and small amounts of hematite. Potassium-rich minerals such as potassium-feldspar and muscovite contact smoothly with quartz respectively, and there was the direction arrangement among potassium-feldspar, quartz and muscovite in the shale. And quartz and hematite were main cement in the shale. The influences of the research results on the potassium extraction from potassium-rich shale were distinct.

scholarly journals Effect of surface chemical composition on the work function of silicon substrates modified by binary self-assembled monolayers

2011 ◽  
Vol 13 (33) ◽  
pp. 15122 ◽  
Author(s):  
Che-Hung Kuo ◽  
Chi-Ping Liu ◽  
Szu-Hsian Lee ◽  
Hsun-Yun Chang ◽  
Wei-Chun Lin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Work Function ◽  
Self Assembled Monolayers ◽  
Silicon Substrates ◽  
Surface Chemical ◽  
Surface Chemical Composition ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Effect Of Surface

Obtaining of Ni Base Intermetallic Alloys by Solidification Control

2007 ◽  
Vol 23 ◽  
pp. 283-386
Author(s):  
Mariana Lucaci ◽  
Radu L. Orban ◽  
M. Lazarescu ◽  
Stefania Gavriliu ◽  
Magdalena Lungu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Directional Solidification ◽  
Induction Furnace ◽  
Vacuum Induction Furnace ◽  
Surface Chemical ◽  
Intermetallic Alloys ◽  
Surface Chemical Composition ◽  
Master Alloys ◽  
Solidification Control ◽  
Cylindrical Samples

Directional solidification techniques have been applied to produce Ni based intermetallic alloys with preferentially oriented columnar crystals extended along the complete length and parallel to the solidification direction. Enhanced ductility is expected from such alloys. In this paper we present the research results concerning the application of this technique to some complex Ni3Al- Fe-B alloys obtained from compacted mixtures of elemental powders. The corresponding master alloys have been obtained in a vacuum induction furnace by the known Exo-Melt process [1]. The directional solidification of these alloys was subsequently performed on cylindrical samples, at two solidification rates, 30 and 15 mm/h. The influence of the rate and composition used on the dimensional variations, densities, microstructure, constituent phases and lattice parameters, as well as on the surface chemical composition have been documented and are presented in the paper.

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