Abstract:
the association of dietary nacl with arterial hypertension has led to a reduction in the levels of this salt in cheeses. for salting, kcl has been used as a partial substitute for nacl, which cannot be completely substituted without affecting product acceptability. in this study a sensorially adequate saline solution (nacl/kcl) was simultaneously diffused during salting of prato cheese in brine with agitation. the simultaneous multicomponent diffusion during the process was modeled with fick？s second generalized law. the system of partial differential equations formed was solved by the finite element method (fem). in the experimental data concentration the deviation for nacl was of 7.3% and for kcl of 5.4%, both of which were considered acceptable. the simulation of salt diffusion will allow control and modulation of salt content in prato cheese, permitting the prediction of final content from initial conditions.

Hydrogels based on acrylamide (AA) and sodium methacrylate (NMA) as
ionic monomer were prepared by solution polymerization using
N,N’-methylenebis(acrylamide) (MBA) or ethylene glycol dimethacrylate (EGMA) as
crosslinkers and Ammonium Persulfate (APS) and N,N,N’,N’-Te-tramethyl-ethylenediamine
(TMEDA) as initiators. Swelling behavior was greatly affected by NMA content
near phase transition. Increasing ionic monomer concentration compared to total
monomer one led to high expansion in water, oscillating around 285 g/g for MBA
and 325 g/g for EGMA crosslinker, above 20% of NMA. Dynamic Light Scattering
experiments were performed and, for both crosslinkers, the dynamic correlation
length (ξ) decreased with increasing
NMA content, contributing to diminish hydrogels spatial inhomogeneities.

Abstract:
This short paper brings
together two literatures: the first is the Lerner Index as a measure of
imperfect competition familiar from industrial organization and the second is
a measure of performance from the efficiency literature, namely the Nerlovian
indicator. We show how these may be related and the resulting decomposition of the
Lerner index which results.

Abstract:
this work presents an analytical investigation for a self-organized criticality abelian model that describes basic properties of rainfall phenomena. the knowledge of the exact solution for the probability that a site topples when mass is added to any other site of the lattice leads to a large number properties of the model, including the exponent of the power law that describes presence of the events as function of their magnitude. it is shown that the model belongs to the same universality class of a first model proposed by dhar and ramaswamy (dr). however, for finite size lattices, it is found that its exponent is larger than that one for the dr model.

Abstract:
this work analyzes the emergence of log-periodic oscillations in thermodynamic functions of ising models on hierarchical lattices. several situations, where the exchange interactions are periodic or aperiodic, are taken into account. high precision values for the thermodynamic functions are numerically obtained with the method of transfer matrices. fitting the curves close to the critical temperature leads to the values of the critical exponents and to the period and amplitude of the oscillations. the first two quantities are found to agree with the results predicted by the renormalization group. the amplitude of oscillations, which are minute for both periodic systems and those with aperiodic irrelevant fluctuations, are significantly enhanced for systems with aperiodic relevant fluctuations. distinct morphologies of the oscillating pattern are discussed, where oscillations are respectively sinusoidal and with a significant contribution of higher order harmonics.

Abstract:
This work analyzes the emergence of log-periodic oscillations in thermodynamic functions of Ising models on hierarchical lattices. Several situations, where the exchange interactions are periodic or aperiodic, are taken into account. High precision values for the thermodynamic functions are numerically obtained with the method of transfer matrices. Fitting the curves close to the critical temperature leads to the values of the critical exponents and to the period and amplitude of the oscillations. The first two quantities are found to agree with the results predicted by the renormalization group. The amplitude of oscillations, which are minute for both periodic systems and those with aperiodic irrelevant fluctuations, are significantly enhanced for systems with aperiodic relevant fluctuations. Distinct morphologies of the oscillating pattern are discussed, where oscillations are respectively sinusoidal and with a significant contribution of higher order harmonics.

Abstract:
This work presents an analytical investigation for a Self-Organized Criticality abelian model that describes basic properties of rainfall phenomena. The knowledge of the exact solution for the probability that a site topples when mass is added to any other site of the lattice leads to a large number properties of the model, including the exponent of the power law that describes presence of the events as function of their magnitude. It is shown that the model belongs to the same universality class of a first model proposed by Dhar and Ramaswamy (DR). However, for finite size lattices, it is found that its exponent is larger than that one for the DR model.

Abstract:
Absorption of acoustic phonons was studied in degenerate Carbon Nanotube (i.e. where the electrons are found close to the Fermi level). The calculation of the hypersound absorption coefficient ()？was done in the regime where (q is the acoustic phonon number and l is the electron mean free path). At T = 10K and θ > 0 (θ being scattering angle), the dependence of on acoustic wave number (q), frequency (ω_{q}), and _{}, (V_{s} and V_{D} being the speed of sound and the drift velocity respectively) were analysed numerically at n = 0,±1,±2 (where n is an integer ) and presented graphically. It was observed that when γ < 0, the maximum amplification was attained at V_{D} = 1.1V_{s} which occurred at E = 51.7V·cm^{-1}. In the second harmonics, (n = ±2), the absorption obtained was compared to experimental measurement of acoustoelectric current via the Weinreich relation and the results qualitatively agreed with each other.

InKenya,
Russian wheat aphid (RWA) and stem rust race TTKS (“Ug99”) are the most devastating pests of wheat. Severe
infestations by RWA result in yield losses of up to 90% while epidemics of “Ug99”can cause up to 100% loss. The two
pests combined have seriously affected farmer incomes forcing them to rely
heavily on pesticides and increasing the cost of production. This study sought
to evaluate a wheat line that has been developed to be resistant to both RWA
and “Ug99”by pyramiding two
major resistance genes. Three varieties were used in this study: “Kwale”, a Kenyan high yielding
commercial variety but susceptible to both RWA and “Ug99”; “Cook”, an Australian variety
carrying stem rust resistance gene Sr36 conferring immunity to “Ug99”; and “KRWA9”, a
Kenyan line resistant to RWA but with poor agronomic attributes. The F_{1} of the double cross (DC F_{1}) was obtained by crossing the F_{1} of “Kwale × Cook” and the F_{1} of “Kwale × KRWA9”.
The DC F_{1} population was subjected to sequential screening for both
RWA and “Ug99”resistance. The surviving DC F_{
}

Blends of polyacrylamide—PAM, poly(N-isopropylacrylamide)—PNIPAAm, poly(N-tert-butylacrylamide)—PTBAA, poly(N,N-dimethylacrylamide)—PDMAA
and poly(N,N-diethylacrylamide)—PDEAA with poly(ethylene glycol)—PEG were
prepared by casting in methanol and water at concentrations of 20 wt%, 40 wt%,
60 wt%, and 80 wt% in PEG. The miscibility of the components was studied by
Differential Scanning Calorimetry—DSC. All blend systems are characterized by a
single glass transition temperature (T_{g}),
close to the T_{g} of the
amorphous component. The Hoffman Weeks method was used to determine equilibrium
melting temperature (T_{m})
data. The determination of the melt point depression of the blends allowed the
calculation of Flory-Huggins interaction parameter (χ_{12}) of the two polymers in the melt, by using the Nishi
Wang equation. The interaction parameters, calculated for all the blends, are
slightly negative and close to zero, suggesting a partial miscibility between
the components.