Results 171 to 180 of about 3,690 (212)

HPFP, a Model Propellant for pMDIs

Drug Development and Industrial Pharmacy, 2003
A novel model propellant for the study of the properties of pMDIs (pressurized metered-dose inhalers) at atmospheric pressure is proposed and extensively characterized. The reasons for the choice of this liquid, with its advantages and drawbacks, are explained and justified. Comparison with existing fluorinated propellants is also documented.
openaire   +2 more sources

Copolymerization in UF/pMDI adhesives networks

Journal of Applied Polymer Science, 2002
AbstractKinetic evidence in thermomechanical analysis experiments and carbon‐13 nuclear magnetic resonance spectroscopy (13C NMR) evidence indicates that the strength of a joint bonded with UF (urea–formaldehyde)/polymeric 4,4'‐diphenylmethane diisocyanate (pMDI) glue mixes is improved by coreaction of the methylol groups of UF resins with pMDI to form
Simon, Caroline, George, B., Pizzi, A.
openaire   +1 more source

Application of co-grinding to formulate a model pMDI suspension

European Journal of Pharmaceutics and Biopharmaceutics, 1999
The objective of this study was to investigate the effect of co-grinding the model drug, triamcinolone acetonide (TAA), with a polymeric surfactant on the in vitro performance of a model pMDI suspension system. The physicochemical properties of TAA after co-grinding with the surfactant, Pluronic F77, were determined by laser light diffraction, helium ...
R O, Williams, M A, Repka, M K, Barron
openaire   +2 more sources

Equivalent Bronchodilation with Salbutamol Given via pMDI or Turbuhaler

American Journal of Respiratory and Critical Care Medicine, 1999
Abstract Several breath-activated multidose powder devices for inhaled anti-asthma drugs are now available. Some of these inhalers have been argued to give higher drug deposition in the airways than conventional pressurized metered dose inhalers (pMDI).
A, Mellén, P, Arvidsson, M, Palmqvist, J, Lötvall   +3 more
openaire   +2 more sources

From hydrofluoroalkane pressurized metered dose inhalers (pMDIs) and comparability with chlorofluorocarbon pMDIs.

Respiratory medicine, 2000
Fluticasone propionate pressurized metered dose inhalers (pMDIs) containing the hydrofluoroalkane (HFA) propellant, HFA 134a, are being developed to replace existing chlorofluorocarbon (CFC) pMDIs. This is part of the ongoing worldwide project to limit the damage to the earth's ozone layer.
R, Kunka, S, Andrews, M, Pimazzoni, S, Callejas, L, Ziviani, L, Squassante, P T, Daley-Yates   +6 more
openaire   +1 more source

Evaluation of the cure kinetics of the wood/pMDI bondline

International Journal of Adhesion and Adhesives, 2001
Abstract Micro-dielectric analysis (μDEA) and differential scanning calorimetry (DSC) were used to monitor cure of polymeric diphenylmethane diisocyanate (pMDI) resin with wood strands in a saturated steam environment. A first-order autocatalyzed kinetic model was employed to determine kinetic parameters.
David P. Harper, Michael P. Wolcott, Timothy G. Rials   +2 more
openaire   +1 more source

Combinations of Low Formaldehyde-Aminoplast Glues and PMDI

The Journal of Adhesion, 1982
Abstract Basic research on the formaldehyde emission from aminoplast-bonded particleboard has led to the conclusion that F-emission is essentially governed by the gross molar ratio of formaldehyde to NH2 equivalents in the material. From this starting point a new approach was chosen in the development of a glue for low-F-emission boards: such a level ...
A. Tinkelenberg, H. W. Vaessen, K. W. Suen, P. G. J. Leusink   +3 more
openaire   +1 more source

Holding chambers for pMDI use.

Drugs under experimental and clinical research, 1998
Spacer devices for pressurized metered-dose inhalers (pMDI) are needed to slow down the aerosol jet and hence to reduce oropharyngeal deposition as well as to overcome coordination problems. A new spacer, JET (Chiesi, Italy), which is less cumbersome to carry, was tested on five healthy volunteers.
H, Matthys, A, Umile
openaire   +1 more source

Biological Effects of Simvastatin Formulated as pMDI on Pulmonary Epithelial Cells

Pharmaceutical Research, 2015
The aim of this study is to evaluate the biological effects of Calu-3 epithelial cells in response to the delivery of simvastatin (SV) via solution pressurized metered dose inhaler (pMDI).SV pMDI was aerosolised onto Calu-3 air-interface epithelial cells using a modified glass twin stage impinger.
Alaa S Tulbah, Hui Xin Ong, Wing-Hin Lee   +2 more
exaly   +3 more sources

Isocyanate Resins for Particleboard: PMDI vs EMDI

Holz als Roh- und Werkstoff, 2002
The purpose of this paper was to determine which of the isocyanate resins, PMDI or EMDI, was better for use in particleboard manufacture. It was found that particleboards bonded with EMDI exhibited superior mechanical properties than those bonded with PMDI. This was particularly noticeable when the resins were applied at a rate of 2%.
A. N. Papadopoulos, C. A. S. Hill, E. Traboulay, J. R. B. Hague   +3 more
openaire   +1 more source