High Resolution XPS Analysis of New Lubricants and Materials for Tribology Under Extreme Conditions

2001 ◽  
Author(s):  
Andrew J. Gellman
Keyword(s):  
High Resolution ◽  
Extreme Conditions ◽  
Xps Analysis

scholarly journals XPS Analysis of 2- and 3-Aminothiophenol Grafted on Silicon (111) Hydride Surfaces

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2712 ◽  
Author(s):  
Chieh-Hua Lee ◽  
Wan-Cian Chen ◽  
Yit Khung
Keyword(s):  
High Resolution ◽  
Nucleophilic Addition ◽  
Surface Reaction ◽  
Negative Charge ◽  
Strong Preference ◽  
Xps Analysis ◽  
Silicon Hydride ◽  
Resonance Structures ◽  
Resonance Effects ◽  
Sh Group

Following on from our previous study on the resonance/inductive structures of ethynylaniline, this report examines similar effects arising from resonance structures with aromatic aminothiophenol with dual electron-donating substituents. In brief, 2- and 3-aminothiophenol were thermally grafted on silicon (111) hydride substrate at 130 °C under nonpolar aprotic mesitylene. From the examination of high resolution XPS Si2p, N1s, and S2p spectrum, it was noticed that there was a strong preference of NH2 over SH to form Si–N linkage on the silicon hydride surface for 2-aminothiophenol. However, for 3-aminothiophenol, there was a switch in reactivity of the silicon hydride toward SH group. This was attributed to the antagonistic and cooperative resonance effects for 2- and 3-aminothiophenol, respectively. The data strongly suggested that the net resonance of the benzylic-based compound could have played an important role in the net distribution of negative charge along the benzylic framework and subsequently influenced the outcome of the surface reaction. To the best of the authors’ knowledge, this correlation between dual electron-donating substituents and the outcome of the nucleophilic addition toward silicon hydride surfaces has not been described before in literature.

scholarly journals Development of a high-resolution apparatus to monitor physiological state of a person undergoing extreme conditions

2016 ◽  
Vol 48 ◽  
pp. 05004 ◽  
Author(s):  
Radik Kodermyatov ◽  
Maxim Ivanov ◽  
Mikhail Yuzhakov ◽  
Vladimir Kuznetsov ◽  
Mariya Yuzhakova ◽  
...  
Keyword(s):  
High Resolution ◽  
Physiological State ◽  
Extreme Conditions

External Hydrodynamic Loads on the Shaft of Azimuthing Thrusters and Podded Propulsors

2015 ◽  
Author(s):  
Jie Dang ◽  
Joris Brouwer
Keyword(s):  
High Resolution ◽  
High Frequency ◽  
Dynamic Loads ◽  
Extreme Conditions ◽  
Propeller Shaft ◽  
Propeller Blade ◽  
Measuring Systems ◽  
Hydrodynamic Loads ◽  
Operational Conditions

During the last decades, MARIN has been developing sophisticated measuring systems to capture dynamic loads on the propeller shaft of azimuthing propulsors, in order to support the industry in studying various phenomena and understanding the physics. These measuring systems are designed so carefully that the hydrodynamic loads can be measured reliably and accurately to a high frequency with high resolution. Attention has been paid to various operational conditions, covering ideal sailing ahead, DP & BP, SOLAS, thrusters-thruster interactions, and to those very extreme conditions e.g. during crash stops, propeller blade ventilation and blade-ice interaction.

High-resolution XPS analysis of GaP(001), (111)A, and (111)B surfaces passivated by (NH4)2Sx solution

2004 ◽  
Vol 235 (3) ◽  
pp. 260-266 ◽  
Author(s):  
Y. Suzuki ◽  
N. Sanada ◽  
M. Shimomura ◽  
Y. Fukuda
Keyword(s):  
High Resolution ◽  
Xps Analysis

scholarly journals The multi-optics high-resolution absorption x-ray spectrometer (HiRAXS) for studies of materials under extreme conditions

2021 ◽  
Vol 92 (5) ◽  
pp. 053102
Author(s):  
S. Stoupin ◽  
D. B. Thorn ◽  
N. Ose ◽  
L. Gao ◽  
K. W. Hill ◽  
...  
Keyword(s):  
High Resolution ◽  
Extreme Conditions ◽  
X Ray

scholarly journals Observations of Atomic Gas in Photodissociation Regions

1992 ◽  
Vol 150 ◽  
pp. 297-302
Author(s):  
Glenn J. White ◽  
Rachael Padman
Keyword(s):  
Energy Balance ◽  
High Resolution ◽  
Molecular Clouds ◽  
Extreme Conditions ◽  
Hii Region ◽  
Neutral Gas ◽  
High Resolution Images ◽  
Photodissociation Regions ◽  
Gas Layer ◽  
Intense Radiation

At the interface between an HII region and a molecular cloud, lies a neutral gas layer which is subject to both an intense radiation field, and to shocks arising from the expansion of the ionisation front of the HII region. The gas in these regions is highly excited, hot, and may be fairly dense. We present the first high resolution images of atomic carbon towards a sample of ionisation front sources. This study has relevance to our understanding of shock induced star formation, the formation and destruction of molecular species under extreme conditions, shock processes in the ISM, and the energy balance in molecular clouds.

Observations of the spatial structure of interstellar hydrogen

1967 ◽  
Vol 31 ◽  
pp. 45-46
Author(s):  
Carl Heiles
Keyword(s):  
High Resolution ◽  
Spatial Structure ◽  
Velocity Dispersion ◽  
Temperature Variations

High-resolution 21-cm line observations in a region aroundlII= 120°,b11= +15°, have revealed four types of structure in the interstellar hydrogen: a smooth background, large sheets of density 2 atoms cm-3, clouds occurring mostly in groups, and ‘Cloudlets’ of a few solar masses and a few parsecs in size; the velocity dispersion in the Cloudlets is only 1 km/sec. Strong temperature variations in the gas are in evidence.

Combining integrated systems-biology approaches with intervention-based experimental design provides a higher-resolution path forward for microbiome research

2019 ◽  
Vol 42 ◽  
Author(s):  
J. Alfredo Blakeley-Ruiz ◽  
Carlee S. McClintock ◽  
Ralph Lydic ◽  
Helen A. Baghdoyan ◽  
James J. Choo ◽  
...  
Keyword(s):  
Systems Biology ◽  
High Resolution ◽  
Experimental Design ◽  
Integrated Systems ◽  
Microbiome Research ◽  
Constructive Criticism

Abstract The Hooks et al. review of microbiota-gut-brain (MGB) literature provides a constructive criticism of the general approaches encompassing MGB research. This commentary extends their review by: (a) highlighting capabilities of advanced systems-biology “-omics” techniques for microbiome research and (b) recommending that combining these high-resolution techniques with intervention-based experimental design may be the path forward for future MGB research.

Very High Resolution Analysis of the Dynamics of a Coronal Plasmoid

1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker
Keyword(s):  
High Resolution ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Field Of View ◽  
Small Field ◽  
High Resolution Analysis ◽  
Ccd Observations ◽  
Resolution Analysis ◽  
Very High ◽  
Small Field Of View

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.

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