scholarly journals Di-neutron correlation and soft dipole excitation in medium mass neutron-rich nuclei near drip line

2005 ◽  
Vol 71 (6) ◽  
Author(s):  
Masayuki Matsuo ◽  
Kazuhito Mizuyama ◽  
Yasuyoshi Serizawa
Keyword(s):  
Drip Line ◽  
Dipole Excitation ◽  
Medium Mass

scholarly journals Pairing collectivity in medium-mass neutron-rich nuclei near drip-line

2007 ◽  
Vol 788 (1-4) ◽  
pp. 307-315 ◽  
Author(s):  
M. Matsuo ◽  
Y. Serizawa ◽  
K. Mizuyama
Keyword(s):  
Drip Line ◽  
Medium Mass

Neutron Separation Energies of Extremely Neutron Rich Excited Nuclei from Z=30 to 70

1998 ◽  
Vol 07 (03) ◽  
pp. 389-403 ◽  
Author(s):  
M. Rajasekaran ◽  
Mamta Aggarwal
Keyword(s):  
Statistical Approach ◽  
Mass Region ◽  
Drip Line ◽  
Thermal Excitation ◽  
Microscopic Approach ◽  
Shell Effects ◽  
Medium Mass ◽  
Excited Nuclei ◽  
Increasing Temperature ◽  
State Separation

Neutron rich nuclei in the medium mass region with thermal excitation and rotational energies, are investigated. A macroscopic-microscopic approach to reproduce the ground state separation energy combined with statistical approach for the excited rotating nuclei yields good results. Shell effects and shape transitions due to rotation alter the boundary of the drip line considerably at low temperatures and with increasing temperature the drip line is lowered to less neutron rich nuclei.

New isotopes, secondary reactions and spectroscopy for medium-mass nuclei at the proton drip line

1995 ◽  
Vol 588 (1) ◽  
pp. c171-c177 ◽  
Author(s):  
B. Blank ◽  
S. Andriamonje ◽  
T. Brohm ◽  
S. Czajkowski ◽  
E. Davi ◽  
...  
Keyword(s):  
Drip Line ◽  
Proton Drip Line ◽  
Medium Mass ◽  
Secondary Reactions

scholarly journals Untargeted Metabolomics Approach for the Discovery of Environment-Related Pyran-2-ones Chemodiversity in a Marine-Sourced Penicillium restrictum

Marine Drugs ◽  
2021 ◽  
Vol 19 (7) ◽  
pp. 378
Author(s):  
Van-Tuyen Le ◽  
Samuel Bertrand ◽  
Thibaut Robiou du Pont ◽  
Fabrice Fleury ◽  
Nathalie Caroff ◽  
...  
Keyword(s):  
Culture Medium ◽  
Blue Mussel ◽  
Culture Media ◽  
Principal Component ◽  
Chemical Diversity ◽  
Untargeted Metabolomics ◽  
High Chemical ◽  
Medium Mass ◽  
Metabolomics Study ◽  
Penicillium Restrictum

Very little is known about chemical interactions between fungi and their mollusc host within marine environments. Here, we investigated the metabolome of a Penicillium restrictum MMS417 strain isolated from the blue mussel Mytilus edulis collected on the Loire estuary, France. Following the OSMAC approach with the use of 14 culture media, the effect of salinity and of a mussel-derived medium on the metabolic expression were analysed using HPLC-UV/DAD-HRMS/MS. An untargeted metabolomics study was performed using principal component analysis (PCA), orthogonal projection to latent structure discriminant analysis (O-PLSDA) and molecular networking (MN). It highlighted some compounds belonging to sterols, macrolides and pyran-2-ones, which were specifically induced in marine conditions. In particular, a high chemical diversity of pyran-2-ones was found to be related to the presence of mussel extract in the culture medium. Mass spectrometry (MS)- and UV-guided purification resulted in the isolation of five new natural fungal pyran-2-one derivatives—5,6-dihydro-6S-hydroxymethyl-4-methoxy-2H-pyran-2-one (1), (6S, 1’R, 2’S)-LL-P880β (3), 5,6-dihydro-4-methoxy-6S-(1’S, 2’S-dihydroxy pent-3’(E)-enyl)-2H-pyran-2-one (4), 4-methoxy-6-(1’R, 2’S-dihydroxy pent-3’(E)-enyl)-2H-pyran-2-one (6) and 4-methoxy-2H-pyran-2-one (7)—together with the known (6S, 1’S, 2’S)-LL-P880β (2), (1’R, 2’S)-LL-P880γ (5), 5,6-dihydro-4-methoxy-2H-pyran-2-one (8), (6S, 1’S, 2’R)-LL-P880β (9), (6S, 1’S)-pestalotin (10), 1’R-dehydropestalotin (11) and 6-pentyl-4-methoxy-2H-pyran-2-one (12) from the mussel-derived culture medium extract. The structures of 1-12 were determined by 1D- and 2D-MMR experiments as well as high-resolution tandem MS, ECD and DP4 calculations. Some of these compounds were evaluated for their cytotoxic, antibacterial, antileishmanial and in-silico PTP1B inhibitory activities. These results illustrate the utility in using host-derived media for the discovery of new natural products.

scholarly journals Study of spin-isospin response of 11Li neutron-drip-line nucleus with PANDORA

2020 ◽  
Vol 1643 ◽  
pp. 012107
Author(s):  
L. Stuhl ◽  
M. Sasano ◽  
J. Gao ◽  
Y. Hirai ◽  
K. Yako ◽  
...  
Keyword(s):  
Drip Line ◽  
Neutron Drip Line
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