Design of the analyzer of the atomic composition of substances based on RF filamentary discharge

2015 ◽  
Vol 12 (5) ◽  
pp. 720-724 ◽  
Author(s):  
V. N. Shalyapin ◽  
S. I. Tyutyunnikov
Keyword(s):  
Atomic Composition ◽  
Filamentary Discharge

A chemoinformatic analysis of atoms, scaffolds and functional groups in natural products

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Joelle Ngo Hanna ◽  
Boris D. Bekono ◽  
Luc C. O. Owono ◽  
Flavien A. A. Toze ◽  
James A. Mbah ◽  
...  
Keyword(s):  
Natural Products ◽  
Drug Discovery ◽  
Physicochemical Properties ◽  
Functional Groups ◽  
Atomic Composition ◽  
Synthetic Compounds ◽  
Chemical Libraries ◽  
Synthetic Drugs ◽  
Drugs Analysis ◽  
Chemical Class

Abstract In the quest to know why natural products (NPs) have often been considered as privileged scaffolds for drug discovery purposes, many investigations into the differences between NPs and synthetic compounds have been carried out. Several attempts to answer this question have led to the investigation of the atomic composition, scaffolds and functional groups (FGs) of NPs, in comparison with synthetic drugs analysis. This chapter briefly describes an atomic enumeration method for chemical libraries that has been applied for the analysis of NP libraries, followed by a description of the main differences between NPs of marine and terrestrial origin in terms of their general physicochemical properties, most common scaffolds and “drug-likeness” properties. The last parts of the work describe an analysis of scaffolds and FGs common in NP libraries, focusing on huge NP databases, e.g. those in the Dictionary of Natural Products (DNP), NPs from cyanobacteria and the largest chemical class of NP – terpenoids.

Atomic composition of WC/ and Zr/O-terminated diamond Schottky interfaces close to ideality

2017 ◽  
Vol 395 ◽  
pp. 200-207 ◽  
Author(s):  
J.C. Piñero ◽  
D. Araújo ◽  
A. Fiori ◽  
A. Traoré ◽  
M.P. Villar ◽  
...  
Keyword(s):  
Atomic Composition

scholarly journals Scanning reflection ion microscopy in a helium ion microscope

2015 ◽  
Vol 6 ◽  
pp. 1125-1137 ◽  
Author(s):  
Yuri V Petrov ◽  
Oleg F Vyvenko
Keyword(s):  
Charge Compensation ◽  
Experimental Setup ◽  
Atomic Composition ◽  
Angle Of Incidence ◽  
Geometrical Analysis ◽  
Platinum Surface ◽  
Secondary Electrons ◽  
Surface Steps ◽  
Helium Ion ◽  
Ion Microscopy

Reflection ion microscopy (RIM) is a technique that uses a low angle of incidence and scattered ions to form an image of the specimen surface. This paper reports on the development of the instrumentation and the analysis of the capabilities and limitations of the scanning RIM in a helium ion microscope (HIM). The reflected ions were detected by their “conversion” to secondary electrons on a platinum surface. An angle of incidence in the range 5–10° was used in the experimental setup. It was shown that the RIM image contrast was determined mostly by surface morphology but not by the atomic composition. A simple geometrical analysis of the reflection process was performed together with a Monte Carlo simulation of the angular dependence of the reflected ion yield. An interpretation of the RIM image formation and a quantification of the height of the surface steps were performed. The minimum detectable step height was found to be approximately 5 nm. RIM imaging of an insulator surface without the need for charge compensation was successfully demonstrated.

Atomic Composition and Morphology of Thin Films of Resveratrol Deposited on Oxidized Silicon and Polycrystalline Gold Surfaces

2019 ◽  
Vol 61 (3) ◽  
pp. 468-473 ◽  
Author(s):  
A. S. Komolov ◽  
E. F. Lazneva ◽  
N. B. Gerasimova ◽  
V. S. Sobolev ◽  
Yu. A. Panina ◽  
...  
Keyword(s):  
Thin Films ◽  
Atomic Composition ◽  
Gold Surfaces ◽  
Polycrystalline Gold

scholarly journals 35. Commission De La Constitution Des Etoiles

1950 ◽  
Vol 7 ◽  
pp. 367-368
Author(s):  
M. H. N. Russell
Keyword(s):  
Main Sequence ◽  
Successive Approximations ◽  
Atomic Composition ◽  
The Past ◽  
Convective Core ◽  
Internal Constitution ◽  
The Mean ◽  
Present Summary ◽  
Mean Molecular Weight ◽  
Uniform Composition

The study of the internal constitution of the stars has advanced rapidly in the past few years, especially for those of the main sequence. The present summary is necessarily brief.For a star of uniform composition, whose interior is in radiative equilibrium, with or without a convective core, the constitution can be completely determined by successive approximations by quadratures, if there are given(a)the atomic composition(b)the equation of state, defining the mean molecular weight μ(c)the equation defining the opacity for the outflowing radiation(d)the equation defining the rate of liberation of energy per gram.

Atomic composition effect on the ordering of solution-phase synthesized FePt nanoparticle films

2004 ◽  
Vol 85 (25) ◽  
pp. 6242-6244 ◽  
Author(s):  
Andrew C. C. Yu ◽  
M. Mizuno ◽  
Y. Sasaki ◽  
H. Kondo
Keyword(s):  
Solution Phase ◽  
Atomic Composition ◽  
Composition Effect ◽  
Nanoparticle Films ◽  
Fept Nanoparticle
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