Nasally inhaled therapeutics and vaccination for COVID‐19: Developments and challenges

J Xi, LR Lei, W Zouzas, X April Si - MedComm, 2021 - Wiley Online Library
The nose is the initial site of viral infection, replication, and transmission in the human body.
Nasally inhaled vaccines may act as a promising alternative for COVID‐19 management in …

[HTML][HTML] Mathematical and computer modeling as a novel approach for the accelerated development of new inhalation and intranasal drug delivery systems

N Menshutina, A Abramov, E Mokhova - Computation, 2023 - mdpi.com
This paper presents modern methods of mathematical modeling, which are widely used in
the development of new inhalation and intranasal drugs, including those necessary for the …

[HTML][HTML] SARS COV-2 virus-laden droplets coughed from deep lungs: Numerical quantification in a single-path whole respiratory tract geometry

X April Si, M Talaat, J Xi - Physics of Fluids, 2021 - pubs.aip.org
When an infected person coughs, many virus-laden droplets will be exhaled out of the
mouth. Droplets from deep lungs are especially infectious because the alveoli are the major …

[HTML][HTML] Radiation dosimetry of inhaled radioactive aerosols: CFPD and MCNP transport simulations of radionuclides in the lung

K Talaat, J Xi, P Baldez, A Hecht - Scientific reports, 2019 - nature.com
Despite extensive efforts in studying radioactive aerosols, including the transmission of
radionuclides in different chemical matrices throughout the body, the internal organ-specific …

Nasal dilation effects on olfactory deposition in unilateral and bi-directional deliveries: In vitro tests and numerical modeling

J Xi, Z Wang, XA Si, Y Zhou - European Journal of Pharmaceutical …, 2018 - Elsevier
The human nose can expand either actively or passively to increase airflow. Nasal dilation
may alter drug delivery efficiencies in the nasal airway or olfactory region. However, the …

Targeted drug delivery to the inferior meatus cavity of the nasal airway using a nasal spray device with angled tip

F Zare, E Aalaei, F Zare, M Faramarzi… - Computer Methods and …, 2022 - Elsevier
Abstract Background and Objective: Nowadays, by advancement in computational tools,
Computational Fluid and Particle Dynamics (CFPD) technique can be used more than ever …

Visualization of local deposition of nebulized aerosols in a human upper respiratory tract model

J Xi, T Yang, K Talaat, T Wen, Y Zhang, S Klozik… - Journal of …, 2018 - Springer
Knowing aerosol deposition distribution (ADD) in the respiratory tract is crucial in assessing
dose–response relationship and optimizing inhalation therapy. However, characterization of …

Understanding the mechanisms underlying pulsating aerosol delivery to the maxillary sinus: in vitro tests and computational simulations

J Xi, XA Si, S Peters, D Nevorski, T Wen… - International Journal of …, 2017 - Elsevier
Background Pulsating aerosol delivery has been demonstrated in depositing medications
into paranasal sinuses. However, its mechanisms are not fully understood. Influences of the …

Count-and mass-based dosimetry of MDI spray droplets with polydisperse and monodisperse size distributions

M Talaat, X Si, X Liu, J Xi - International Journal of Pharmaceutics, 2022 - Elsevier
Most previous numerical studies of inhalation drug delivery used monodisperse aerosols or
quantified deposition as the ratio of deposited particle number over the total number of …

Alveolar size effects on nanoparticle deposition in rhythmically expanding-contracting terminal alveolar models

J Xi, M Talaat, XA Si, P Han, H Dong… - Computers in biology and …, 2020 - Elsevier
Significant differences in alveolar size exist in humans of different ages, gender, health, and
among different species. The effects of alveolar sizes, as well as the accompanying …