753 research outputs found
Oxidation of glucose by iodine in the presence of insulin
This investigation was undertaken with the purpose of determining whether insulin, alone or in the presence of certain animal fluids, has any influence upon glucose in vitro. The establishment of such an influence might have much significance in relation both to the study of carbohydrate metabolism and to the development of methods of assaying insulin
Interactions between Trichoderma spp and soil-borne plant pathogens : implications for biological control
Imperial Users onl
Topological susceptibility through the deconfining phase transition
We present a measurement of the topological susceptibility in SU(3)
Yang-Mills theory through the deconfinement phase transition. An improved
operator is used for the topological charge density. A drop by an order of
magnitude is observed from the confined to the deconfined phase.Comment: Talk presented at LATTICE96(topology). 3 pages, 2 postscript figures,
uses espcrc2.sty include
Topological properties of QCD with two dynamical fermions
We investigate the topological susceptibility of the QCD vacuum with two
flavours of dynamical staggered fermions on the lattice both at zero and finite
temperature. At zero temperature we study the dependence of the signal on the
fermion mass and at finite temperature we analyze the behaviour across the
phase transition.Comment: LATTICE99(finite temperature and density). 3 pages, contains
espcrc2.sty fil
Behavior near of the mass gap in the 2D O(3) non-linear sigma model
The validity of the Haldane's conjecture entails that the mass gap of the
2-dimensional O(3) non-linear sigma model with a -term must tend to
zero as approaches the value by following a precise law. In the
present paper we extract the related critical exponents by simulating the model
at imaginary .Comment: 24 pages, LaTeX source and 5 eps figure
The order of the chiral transition in N_f=2 QCD
A strategy is developed to investigate the order of the transition using
finite size scaling and its relation to color confinement. An in-depth
numerical investigation has been performed with KS fermions on lattices with
N_t=4 and N_s=12,16,20,24,32 and quark masses am_q ranging from 0.01335 to
0.35. The specific heat and a number of susceptibilities have been measured and
compared with the expectation of an O(4) second order and a first order phase
transition. A second order O(4) is excluded, whilst data are consistent with a
first order.Comment: 6 pages, 16 postscript figures, based on parallel talks presented at
Lattice2004(non-zero), Fermilab, June 21-26, 200
Universal Behaviour of the Superfluid Fraction and Tc of He-3 in 99.5% Open Aerogel
We have investigated the superfluid transition of He-3 in a 99.5% porosity
silica aerogel. This very dilute sample shows behaviour intermediary between
bulk He-3 and He-3 confined to the denser aerogels previously studied. We
present data on both the superfluid transition temperature and the superfluid
density and compare our results with previous measurements. Finally, we show
that the suppression of the superfluid transition temperature and suppression
of the superfluid density of He-3 in aerogel follow a universal relation for a
range of aerogel samples.Comment: 4 pages, 5 figures; 1 new figure, minor change
Effective Hamiltonian Approach to Hyperon Beta Decay with Final-State Baryon Polarization
Using an effective Hamiltonian approach, we obtain expressions for hyperon
beta decay final-state baryon polarization. Terms through second order in the
energy release are retained. The resulting approximate expressions are much
simpler and more compact than the exact expressions, and they agree closely
with them.Comment: 1 Figure Will appear in Phys Rev D 60 Article 117505 (Dec 1, 1999
- …