A light‐scattering matrix for unicellular marine phytoplankton

K Witkowski, T Król, A Zielirińki… - Limnology and …, 1998 - Wiley Online Library
This paper presents angular and spectral measurements of the functions that create a
scattering matrix (Müller matrix). The investigations were carried out on monocultures of the …

Diagnostic value of lung function parameters and FeNO for asthma in schoolchildren in large, real‐life population

T Grzelewski, K Witkowski… - Pediatric …, 2014 - Wiley Online Library
Background and Objective To establish a diagnostic value of fractional exhaled nitric oxide (FeNO),
interrupter resistance measurement (Rint), specific resistance of the airways (sRaw), …

Effect of inhaled N-acetylcysteine on hydrogen peroxide exhalation in healthy subjects

U Szkudlarek, A Zdziechowski, K Witkowski… - Pulmonary …, 2004 - Elsevier
N-acetylcysteine (NAC) has antioxidant properties and its oral administration decreased H 2
O 2 exhalation in patients with chronic obstructive pulmonary disease. In this study we …

Particle formation in emulsion polymerization, 2. Aggregation of primary particles

…, W Lebek, E Stettin, K Witkowski… - Die …, 1992 - Wiley Online Library
The formation and aggregation of primary particles in the beginning of emulsion polymerization
was monitored by surface tension measurements, viscometry, electron microscopy, and …

[HTML][HTML] Adherence to treatment in paediatric patients–results of the nationwide survey in Poland

P Kardas, M Dabrowa, K Witkowski - BMC pediatrics, 2021 - Springer
Background Due to high prevalence, non-adherence to prescribed treatment seriously
undermines the effectiveness of evidence-based therapies in paediatric patients. In order to …

The investigation of kinetic growth of Chlorella vulgaris cells by the method of integral and dynamic light scattering

K Witkowski, L Woliński, Z Turzyński… - Limnology and …, 1993 - Wiley Online Library
Laboratory measurements of light scattering on axenic cultures of the unicellular alga Chlorella
vulgaris confirm multilevel light scattering by the cell (ie both by the outer cell membrane …

Spirometry-adjusted fraction of exhaled nitric oxide allows asthma diagnosis in children, adolescents, and young adults

…, A Janas, A Grzelewska, K Witkowski… - Respiratory …, 2016 - rc.rcjournal.com
BACKGROUND: Recently, it has been proved that fractional exhaled nitric oxide (F ENO )
results are in disagreement with other measurements of asthma control. The objective of this …

Lichtstreubefunde zur Kettenspaltung von Polystyrol in sauerstoffreien CCl4‐und CHCl3‐Lösungen bei Lichteinwirkung der Wellenlängen λ≥ 270 nm

…, Z Turzyński, K Witkowski - … Chemistry and Physics, 1987 - Wiley Online Library
The photodegradation of polystyrene (PS) in deoxygenated solutions of CCl 4 and CHCl 3
by irradiation with ultraviolet light of wavelengths λ ≥ 270 nm is investigated by quasielastic …

Light scattering on Chlorella vulgaris cells

T Krol, A Zielinski, K Witkowski - Ocean optics XI, 1992 - spiedigitallibrary.org
Laboratory measurements of light scattering on the axenic cultures of unicellular alga Chlorella
vulgaris monoculture confirm the thesis of multi-level light scattering by the cell ie, both …

[HTML][HTML] The prevalence of symptoms and its correlation with sex in polish COVID-19 adult patients: Cross-sectional online open survey

P Lewek, I Banaś, K Witkowski, J Lewek… - Frontiers in …, 2023 - frontiersin.org
BACKGROUND The understanding and treatment of COVID-19 has improved rapidly since
December 2019 when SARS-CoV-2 was sequenced. However most papers on its …