(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image) Issue Title: The 22nd European Conference on Few-Body Problems in Physics, Kraków 2013 A three-body calculation for the ... ...and ... hypernuclei has been undertaken. The respective cores are ... The interactions in the ... system, modeled as ..., are reasonably well known. For example, the p n interaction is well determined by the p n scattering data, the ...-p interaction can be fitted to the ... binding energy. The ... -n interaction can be fitted to alpha-n scattering data. For the ^sup 4^He-n system the s-wave can be modeled alternatively as a repulsive potential or as an attractive potential with a forbidden bound state. We explore these alternatives in ^sup 6^He, because the interaction comes into play in modeling ... as well as in our ... + n + n model of ..., where the valence neutrons are Pauli blocked from the s-shell of the core nucleus.PUBLICATION ABSTRACT
Modeled as ... + n + n Gibson, B F; Afnan, IR
Few-body systems,
08/2014, Letnik:
55, Številka:
8-10
Journal Article
Recenzirano
(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).A three-body calculation for the ... and ... hypernuclei has been undertaken. The respective cores are ... The interactions ...in the ... system, modeled as ..., are reasonably well known. For example, the p n interaction is well determined by the p n scattering data, the ...-p interaction can be fitted to the ... binding energy. The ... -n interaction can be fitted to alpha -n scattering data. For the super(4)He-n system the s-wave can be modeled alternatively as a repulsive potential or as an attractive potential with a forbidden bound state. We explore these alternatives in super(6)He, because the interaction comes into play in modeling ... as well as in our ... + n + n model of ..., where the valence neutrons are Pauli blocked from the s-shell of the core nucleus.
Doramectin, 25-cyclohexyl-5-O-demethyl-25-de(l-methylpropyl)avermectin A1a, was selected as the best of a series of novel avermectins prepared by mutational biosynthesis. The primary evaluation of ...its in vivo antiparasitic activity was carried out using a rat Trichostrongylus colubriformis model and a rabbit Psoroptes cuniculi model. In each case the new avermectin performed favourably relative to dihydroavermectin B1a (DHAVM), the major component of ivermectin. Doramectin was extensively evaluated in cattle using an experimental micelle formulation, proving highly effective in cattle infected with Ostertagia ostertagi, Cooperia oncophora and Dictyocaulus viviparus when administered subcutaneously at 200 micrograms kg-1. The plasma pharmacokinetic characteristics of doramectin in cattle following intravenous administration revealed a plasma half-life of approximately 89 h. In the micelle formulation, doramectin administered subcutaneously at 400 micrograms kg-1 provided persistent activity against infection of cattle with C. oncophora and O. ostertagi for at least 8 and 12 days respectively.
We examine briefly whether our realistic models of nuclear forces, which govern the interactions of neutrons and protons with one another and form the basis for precision calculations describing ...conventional few-nucleon systems, can extrapolate beyond the realm of
S
=
0
nuclear physics where they were developed, or whether they are merely exquisite interpolation tools within the bounds of well established neutron-proton physics. To address that issue, we examine certain novel aspects of Λ hypernuclei, exploring how few-body hypernuclei provide a laboratory in which one can investigate properties of the Λ
N interaction. Finally we look forward to possible future experiments that can enhance our minimal data base for hyperon-nucleon scattering and reactions.
Weak decay of hypernuclei, first cousin to the {beta}-decay of conventional, nonstrange nuclei, was initially observed in the 1950s. Pionic decay rates have proven a challenge--to reconcile nuclear ...decay rates with that of free {lambda} decay. Pauli blocking of the decay nucleon plays an important role. Nonmesonic decay provides our only practical means of exploring the four-fermion, strangeness-changing N{Lambda} {yields} NN weak interaction. The N{Lambda}{rho} vertex can be investigated in no other way. The large momentum transfer in the nonmesonic decay process suggests a means to probe short distance aspects of the interaction, possibly revealing baryon substructure effects. Whether the {Delta}I = 1/2 rule, which governs free {Lambda} decay, also applies to the nonmesonic decay process remains an open question. The free {Lambda} does not decay by emission of a {pi}{sup +}; the {pi}{sup +} decay of {sup 4}He is a puzzle. Finally, the weak decay of strangeness -2 hypernuclei is an important topic, because the pionic decay process is central to current efforts to seek and identify {Lambda}{Lambda} hypernuclei.
Λ6H Modeled as Λ4H + n + n Gibson, B. F.; Afnan, I. R.
Few-body systems,
2014/8, Letnik:
55, Številka:
8-10
Journal Article
Recenzirano
A three-body calculation for the
Λ
4
He
and
Λ
6
H
hypernuclei has been undertaken. The respective cores are
Λ
4
H
. The interactions in the
Λ
6
He
system, modeled as
Λ
4
H
+
p
+
n
, are reasonably ...well known. For example, the
p
n
interaction is well determined by the
p
n
scattering data, the
Λ
4
H
–
p
interaction can be fitted to the
Λ
5
He
binding energy. The
Λ
4
He
–
n
interaction can be fitted to α–
n
scattering data. For the
4
He–
n
system the s-wave can be modeled alternatively as a repulsive potential or as an attractive potential with a forbidden bound state. We explore these alternatives in
6
He, because the interaction comes into play in modeling
Λ
6
He
as well as in our
Λ
4
H
+
n
+
n
model of
Λ
6
H
, where the valence neutrons are Pauli blocked from the s-shell of the core nucleus.
![[6 over [Lambda]]H Modeled ...](http://api.summon.serialssolutions.com/2.0.0/image/issn/XR4PS5YY4K/0177-7963/small "[6 over [Lambda]]H Modeled as [4 over [Lambda]]H + n + n")
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