objective(s): it has been suggested that the efficiency of dry poder inhaler (dpi) is generally low. therefore, the aim of the present research work was to use the solvent treatment of the carrier in dpiformulations to see the possibility of inducing desirable characteristics.   materials and methods: lactose sieve fractions of 63-90 μm were submerged in ethanol or 80% v/v ethanol, methanol or ...

  Objective(s): It has been suggested that the efficiency of dry poder inhaler (DPI) is generally low. Therefore, the aim of the present research work was to use the solvent treatment of the carrier in DPIformulations to see the possibility of inducing desirable characteristics.   Materials and Methods: Lactose sieve fractions of 63-90 μm were submerged in ethanol or 80% v/v etha...

B and N K-edge x-ray absorption spectroscopy measurements have been performed on three BN thin films grown on Si substrates using ion-assisted pulsed laser deposition. Comparison of the films’ spectra to those of several single-phase BN powder standards shows that the films consist primarily of sp bonds. Other features in the films’ spectra suggest the presence of secondary phases, possibly cub...

We consider neural network models described by systems of (continuous time) differential equations. Th e dynamical nature of each model is identified, symmet ric networks being relat ed to gradient vector fields and asymmet ric networks decomposed into their gradient and Hamilt onian components . From thi s identification follows, in particular , a simple characterizat ion of st ructural stabil...

In this paper, we present recent developments in the characterizat ion of healthy and pathologic cries of newborns. We have identified and quantified acoustic characteristics that appear the most relevant in differentiating between pathological and healthy cries; such as fundamental frequency (F0), irregularity of F0 and presence of hyper-phonic modes. The results obtained are very encouraging,...

In this work we present the synthesis and X-ray single crystal structural characterizat ion of the heterocyclic compound rac-N-acetyl-2-thiohydantoin-leucine. Th is material crystallize in the triclin ic system with space group P-1 (No2), Z=4, with two independent molecu les in the unit asymmetric. The crystal packing is governed by N--H···O hydrogen bond-type intermolecular interactions, formi...

Wr rxttnd the notions of correlation-immune functions and resilient functions to functions over any finite alphabet endowed with the structure of an Abelian group. Thus we generalize the results of Gopalakrishnan and Slinsori as wc givc an orthogonal array characterizat,ion and a Fourier transform characterization for resilient functions over any finite alphabet. This leads to a generalization ...

BACKGROUND Delivery of powder formulations to the nose is an attractive alternative for many drugs and vaccines. This study compared the regional nasal deposition and clearance patterns of lactose powder delivered by the OptiNose powder device (Opt-Powder; OptiNose US Inc., Yardley, PA, USA) to that of liquid aerosol administered via a traditional hand-actuated liquid spray pump (Rexam SP270, R...

Aerosol-assisted chemical vapour deposition (AACVD) of Cd[(SePiPr2)2N]2 is shown to deposit cadmium selenide and/or cadmium phosphide on glass substrates, depending upon the growth conditions. The phase, structure, morphology and composition of the films were characterised by X-ray powder diffraction (XRD), scanning electron microscopy, energy dispersive X-ray analysis and X-ray photoelectron s...