Fusion-evaporation residue as a dynamical decay process in the48Ca +249Bk→297117*reaction

2012 ◽  
Vol 85 (2) ◽  
Author(s):  
Kirandeep Sandhu ◽  
Manoj K. Sharma ◽  
Raj K. Gupta
Keyword(s):  
Evaporation Residue ◽  
Decay Process ◽  
Dynamical Decay

EVAPORATION RESIDUE AND FISSION CROSS-SECTION FOR THE SYSTEM : 40Ar + 110Pd

1980 ◽  
Vol 41 (C10) ◽  
pp. C10-234-C10-238 ◽  
Author(s):  
C. Cabot ◽  
H. Gauvin ◽  
Y. Le Beyec ◽  
H. Delagrange ◽  
J. P. Dufour ◽  
...  
Keyword(s):  
Cross Section ◽  
Fission Cross Section ◽  
Evaporation Residue

scholarly journals Characterization of the decay process of Scots pine caused by Coniophora puteana using NMR and MRI

Holzforschung ◽  
2020 ◽  
Vol 74 (11) ◽  
pp. 1021-1032 ◽  
Author(s):  
Sami Hiltunen ◽  
Arttu Mankinen ◽  
Muhammad Asadullah Javed ◽  
Susanna Ahola ◽  
Martti Venäläinen ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Scots Pine ◽  
Structural Changes ◽  
Free Water ◽  
Wood Decay ◽  
Active Regions ◽  
Dry Mass ◽  
Decay Process ◽  
Coniophora Puteana ◽  
Magnetic Resonance Imaging Mri

AbstractWood decay is an economically significant process, as it is one of the major causes of wood deterioration in buildings. In this study, the decay process of Scots pine (Pinus sylvestris) samples caused by cellar fungus (Coniophora puteana) was followed by nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) methods. Altogether, 30 wood sample pieces were exposed to fungus for 10 weeks. Based on the decrease of the dry mass, the samples were categorized into three classes: decomposed (mass decrease 50–70%), slightly decomposed (10–50%), and nondecomposed (<10%). MRI made it possible to identify the active regions of fungus inside the wood samples based on the signal of free water brought by the fungus and arisen from the decomposition of wood carbohydrates. MRI implies that free water is not only created by the decay process, but fungal hyphae also transports a significant amount of water into the sample. Two-dimensional 1H T1-T2 relaxation correlation NMR measurements provided detailed information about the changes in the microstructure of wood due to fungal decomposition. Overall, this study paves the way for noninvasive NMR and MRI detection of fungal decay at early stages as well as the related structural changes.

Phosphorescence of naphthalene-labelled colloidal polymer particles. The α-methyl relaxation of one microphase in a multicomponent material

1985 ◽  
Vol 63 (1) ◽  
pp. 129-133 ◽  
Author(s):  
Mitchell A. Winnik ◽  
Onder Pekcan ◽  
M. D. Croucher
Keyword(s):  
Decay Process ◽  
Relaxation Processes ◽  
Pure Pmma ◽  
Phosphorescence Quenching ◽  
Complex Morphology ◽  
Freeze Dried ◽  
Decay Times ◽  
Powder Samples ◽  
Pmma Particles ◽  
Multicomponent Material

Nonaqueous dispersions of poly(methyl methacrylate) (PMMA) particles, sterically stabilized with polyisobutylene (PIB), were prepared with naphthalene (N) groups covalently incorporated into the PMMA chains. These materials have a complex morphology of phase-separated PMMA and PIB microdomains, with the N groups in the PMMA microphases. The phosphorescence intensity and decay times of the N groups were measured as a function of temperature over the range 77–295 K for dispersions in methylcyclohexane and for freeze-dried powder samples. An Arrhenius treatment of the radiationlcss decay rate showed a change in slope at −35 °C. The activation energy for the radiationless decay process is 3.8 kcal/mol in the −35 – +22 °C temperature region, identical to that found for pure PMMA by nmr for chain motion associated with the a-methyl relaxation process. We believe that the phosphorescence experiment is sensitive to the diffusion of oxygen and other impurities in the sample. These rates increase as the temperature is raised, enhancing the rate of phosphorescence quenching. These experiments indicate that phosphorescence measurements on labelled samples are suitable for studying relaxation processes within individual microphases of a polyphasic composite material.

Evaporation residue excitation functions from fusion of 63Cu with 65Cu

1979 ◽  
Vol 321 (2) ◽  
pp. 501-514 ◽  
Author(s):  
R. Lucas ◽  
J. Poitou ◽  
J. Girard
Keyword(s):  
Evaporation Residue ◽  
Excitation Functions

A Decay Process of Surface Electric Charges across Poyethylene Film

1967 ◽  
Vol 6 (6) ◽  
pp. 793-794 ◽  
Author(s):  
Masayuki Ieda ◽  
Goro Sawa ◽  
Ukichi Shinohara
Keyword(s):  
Decay Process

scholarly journals Evaporation-residue cross sections: role of the entrance channel

2011 ◽  
Vol 17 ◽  
pp. 09004 ◽  
Author(s):  
Neil Rowley ◽  
Nabila Saffdine Grar
Keyword(s):  
Cross Sections ◽  
Evaporation Residue ◽  
Entrance Channel

A measurement of the π° lifetime via the inverse decay process

1965 ◽  
Vol 18 (3) ◽  
pp. 333-338 ◽  
Author(s):  
G. Bellettini ◽  
C. Bemporad ◽  
P.L. Braccini ◽  
L. Foà
Keyword(s):  
Decay Process
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