Search results for " aerosol"
showing 4 items of 94 documents
Realization of polyaspartamide-based nanoparticles and in vivo lung biodistribution evaluation of a loaded gucocorticoid after aerosolization in mice
2016
Abstract In this study, novel polymeric nanoparticles (NPs) were developed and their potential as carriers for beclomethasone dipropionate (BDP) into the lung after aerosolization was demonstrated by in vivo studies in mice. In particular, these NPs were obtained starting from two polyaspartamide-based copolymers which were synthesized by chemical reaction of α,β-poly(N-2-hydroxyethyl)- dl -aspartamide (PHEA) and its pegylated derivative (PHEA-PEG2000) with poly(lactic acid) (PLA). To obtain nanosized particles, the high pressure homogenization (HPH)—solvent evaporation method was followed by using an organic phase containing both PHEA-PLA and PHEA-PEG2000-PLA (at a weight ratio equal to 1:…
Aerosolization Performance of Jet Nebulizers and Biopharmaceutical Aspects
2019
In this work, 13 jet nebulizers, some of which in different configurations, were investigated in order to identify the biopharmaceutical constraints related to the quality attributes of the medicinal products, which affect their safety, efficiency, compliance, and effectiveness. The aerosolization parameters, including the aerosol output, aerosol output rate, mass median aerodynamic diameter, and fine particle fraction, were determined according to the European Standard EN 13544-1, using sodium fluoride as a reference formulation. A comparison between the aerosol output nebulization time and the fine particle fraction displayed a correlation between the aerosol quality and the nebulization …
Dekongestantu aprite Rīgas aptiekās
2017
Mūsdienas rinīts un alerģijas skar lielako daļu pasaules iedzīvotaju. Pie rinīta formu ārstēšanas un terapijas, tiek plaši pielietoti dekongestantu preparāti, kas samazina deguna gļotādas tūsku, izraisot asinsvadu sašaurināšanos. Šī darba mērķis bija analizēt dekongestantu preparātu apgrozījumu trīs Rīgas aptiekās laikā periodā 01.02.2016 līdz 30.01.2017, un noteikt dekongestantu preparātu apgrozījuma raditājus. Ar anketēšanas palīdzību tika noskaidrotas pacientu zināšanas par dekongestantu preparātiem un to kādi ir galvenie izvēles kritēriji, izvēloties dekongestanta preparātu. Tika konstatēts, ka 50% no aptaujātajiem respondentie, kuri lieto dekongestanta preparātus, nav informēti par to …
Microstructural evaluation and recommendations for face masks in community use to reduce the transmission of respiratory infectious diseases
2022
Funding Information: A.K., H.Y. and R.J. also acknowledges the funding through Academy of Finland BESIMAL (Decision No. 334197) and Aalto University, Department of Communications and Networking. This work has also received funding in part from the EPSRC UK (grant number EP/R012091/1). A.K. would also like to thank Mr. Volkan Kaplan for the fruitful discussions in the early concept generation. Publisher Copyright: © 2022 The Author(s) Background and Objective: Recommendations for the use of face masks to prevent and protect against the aerosols (≤5µm) and respiratory droplet particles (≥5µm), which can carry and transmit respiratory infections including severe acute respiratory syndrome coro…