Site‐specific fragmentation following Si:2pcore‐level photoexcitation of F3SiCH2Si(CH3)3in the vapor phase

1995 ◽  
Vol 102 (15) ◽  
pp. 6078-6087 ◽  
Author(s):  
Shin‐ichi Nagaoka ◽  
Joji Ohshita ◽  
Mitsuo Ishikawa ◽  
Keiko Takano ◽  
Umpei Nagashima ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Site Specific

ChemInform Abstract: Site-Specific Fragmentation Following Core-Level Photoexcitation of Organosilicon Molecules in the Vapor Phase and on the Solid Surface

ChemInform ◽  
2010 ◽  
Vol 30 (10) ◽  
pp. no-no
Author(s):  
Shin-Ichi Nagaoka ◽  
Kazuhiko Mase ◽  
Inosuke Koyano
Keyword(s):  
Vapor Phase ◽  
Solid Surface ◽  
Core Level ◽  
Site Specific

Site-specific fragmentation following inner-core level excitation of Pb(CH3)4 in the vapor phase

1989 ◽  
Vol 154 (4) ◽  
pp. 363-368 ◽  
Author(s):  
Shin-ichi Nagaoka ◽  
Inosuke Koyano ◽  
Kiyoshi Ueda ◽  
Eiji Shigemasa ◽  
Yukinori Sato ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Inner Core ◽  
Core Level ◽  
Site Specific

Site‐specific reaction kinetics for gallium arsenide metalorganic vapor‐phase epitaxy

1996 ◽  
Vol 69 (21) ◽  
pp. 3236-3238 ◽  
Author(s):  
S. D. Adamson ◽  
B. K. Han ◽  
R. F. Hicks
Keyword(s):  
Gallium Arsenide ◽  
Reaction Kinetics ◽  
Vapor Phase ◽  
Metalorganic Vapor Phase Epitaxy ◽  
Vapor Phase Epitaxy ◽  
Site Specific ◽  
Specific Reaction

Planar defects in ordered (Ga,In)P

1988 ◽  
Vol 46 ◽  
pp. 902-903
Author(s):  
S. McKernan ◽  
C. B. Carter ◽  
D. Bour ◽  
J. R. Shealy
Keyword(s):  
Electron Diffraction ◽  
Vapor Phase ◽  
Growth Direction ◽  
High Density ◽  
Ordered Structure ◽  
Planar Defects ◽  
Diffraction Patterns ◽  
Ternary Semiconductors ◽  
Anion Species ◽  
Metallic Vapor

The growth of ternary III-V semiconductors by organo-metallic vapor phase epitaxy (OMVPE) is widely practiced. It has been generally assumed that the resulting structure is the same as that of the corresponding binary semiconductors, but with the two different cation or anion species randomly distributed on their appropriate sublattice sites. Recently several different ternary semiconductors including AlxGa1-xAs, Gaxln-1-xAs and Gaxln1-xP1-6 have been observed in ordered states. A common feature of these ordered compounds is that they contain a relatively high density of defects. This is evident in electron diffraction patterns from these materials where streaks, which are typically parallel to the growth direction, are associated with the extra reflections arising from the ordering. However, where the (Ga,ln)P epilayer is reasonably well ordered the streaking is extremely faint, and the intensity of the ordered spot at 1/2(111) is much greater than that at 1/2(111). In these cases it is possible to image relatively clearly many of the defects found in the ordered structure.

Large-cluster and combined fluorescent and gold immunoprobes

1996 ◽  
Vol 54 ◽  
pp. 892-893
Author(s):  
Richard D. Powell ◽  
James F. Hainfeld ◽  
Carol M. R. Halsey ◽  
David L. Spector ◽  
Shelley Kaurin ◽  
...  
Keyword(s):  
Metal Cluster ◽  
Sulfonyl Chloride ◽  
Gel Filtration ◽  
Cross Linking ◽  
Site Specific ◽  
Fab Fragments ◽  
Cluster Label ◽  
Covalently Linked ◽  
Texas Red ◽  
Fold Excess

Two new types of covalently linked, site-specific immunoprobes have been prepared using metal cluster labels, and used to stain components of cells. Combined fluorescein and 1.4 nm “Nanogold” labels were prepared by using the fluorescein-conjugated tris (aryl) phosphine ligand and the amino-substituted ligand in the synthesis of the Nanogold cluster. This cluster label was activated by reaction with a 60-fold excess of (sulfo-Succinimidyl-4-N-maleiniido-cyclohexane-l-carboxylate (sulfo-SMCC) at pH 7.5, separated from excess cross-linking reagent by gel filtration, and mixed in ten-fold excess with Goat Fab’ fragments against mouse IgG (obtained by reduction of F(ab’)2 fragments with 50 mM mercaptoethylamine hydrochloride). Labeled Fab’ fragments were isolated by gel filtration HPLC (Superose-12, Pharmacia). A combined Nanogold and Texas Red label was also prepared, using a Nanogold cluster derivatized with both and its protected analog: the cluster was reacted with an eight-fold excess of Texas Red sulfonyl chloride at pH 9.0, separated from excess Texas Red by gel filtration, then deprotected with HC1 in methanol to yield the amino-substituted label.

The challenge of detecting modifications on proteins

2020 ◽  
Vol 64 (1) ◽  
pp. 135-153 ◽  
Author(s):  
Lauren Elizabeth Smith ◽  
Adelina Rogowska-Wrzesinska
Keyword(s):  
Mass Spectrometry ◽  
Protein Function ◽  
Chemical Properties ◽  
Lysine Acetylation ◽  
Mass Determination ◽  
Post Translational Modifications ◽  
Site Specific ◽  
The Common

Abstract Post-translational modifications (PTMs) are integral to the regulation of protein function, characterising their role in this process is vital to understanding how cells work in both healthy and diseased states. Mass spectrometry (MS) facilitates the mass determination and sequencing of peptides, and thereby also the detection of site-specific PTMs. However, numerous challenges in this field continue to persist. The diverse chemical properties, low abundance, labile nature and instability of many PTMs, in combination with the more practical issues of compatibility with MS and bioinformatics challenges, contribute to the arduous nature of their analysis. In this review, we present an overview of the established MS-based approaches for analysing PTMs and the common complications associated with their investigation, including examples of specific challenges focusing on phosphorylation, lysine acetylation and redox modifications.

CPT Site-Specific Biopsy Codes: Undercoding Means Underpayment

2006 ◽  
Vol 37 (6) ◽  
pp. 49
Author(s):  
Bruce Jancin
Keyword(s):  
Site Specific

MEMORY EFFECTS IN THE FRAGMENTATION OF MOLECULES FOLLOWING SITE-SPECIFIC CORE EXCITATION

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-741-C9-744 ◽  
Author(s):  
W. HABENICHT ◽  
L. A. CHEWTER ◽  
M. SANDER ◽  
K. MÜLLER-DETHLEFS ◽  
E. W. SCHLAG
Keyword(s):  
Memory Effects ◽  
Core Excitation ◽  
Site Specific
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