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  1. Article ; Online: A Hardware Encoder-Based Synchronization Method for a Fast Terahertz TDS Imaging System Based on the ECOPS Scheme.

    Maciejewski, Marcin / Kamiński, Kamil / Pałka, Norbert

    Sensors (Basel, Switzerland)

    2024  Volume 24, Issue 6

    Abstract: In this paper, we report our use of a hardware encoder-based synchronization method for a fast terahertz time-domain spectroscopy raster scanner built with the commercially available TeraFlash Smart platform. We describe the principles of our method, ... ...

    Abstract In this paper, we report our use of a hardware encoder-based synchronization method for a fast terahertz time-domain spectroscopy raster scanner built with the commercially available TeraFlash Smart platform. We describe the principles of our method, including our incorporation of synchronization signals from various devices included in the scanner. We also describe its implementation in a microcontroller with a dedicated counter. By such means, a fast scanning mode was obtained, which was 35 times faster than a traditional step-by-step approach. To validate the proposed synchronization method, we carried out measurements using the USAF 1951 resolution test and a fiberglass plate with a set of intentionally introduced defects. Our results confirmed that the TDS scanner with the developed synchronization method was able to capture high-quality images with resolutions as high as those obtained using traditional step-by-step scanning, but with significantly reduced scanning times.
    Language English
    Publishing date 2024-03-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s24061806
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  2. Article ; Online: Automatic Speaker Recognition System Based on Gaussian Mixture Models, Cepstral Analysis, and Genetic Selection of Distinctive Features.

    Kamiński, Kamil A / Dobrowolski, Andrzej P

    Sensors (Basel, Switzerland)

    2022  Volume 22, Issue 23

    Abstract: This article presents the Automatic Speaker Recognition System (ASR System), which successfully resolves problems such as identification within an open set of speakers and the verification of speakers in difficult recording conditions similar to ... ...

    Abstract This article presents the Automatic Speaker Recognition System (ASR System), which successfully resolves problems such as identification within an open set of speakers and the verification of speakers in difficult recording conditions similar to telephone transmission conditions. The article provides complete information on the architecture of the various internal processing modules of the ASR System. The speaker recognition system proposed in the article, has been compared very closely to other competing systems, achieving improved speaker identification and verification results, on known certified voice dataset. The ASR System owes this to the dual use of genetic algorithms both in the feature selection process and in the optimization of the system's internal parameters. This was also influenced by the proprietary feature generation and corresponding classification process using Gaussian mixture models. This allowed the development of a system that makes an important contribution to the current state of the art in speaker recognition systems for telephone transmission applications with known speech coding standards.
    Language English
    Publishing date 2022-12-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s22239370
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  3. Article ; Online: Visible-light-induced ATRP under high-pressure: synthesis of ultra-high-molecular-weight polymers.

    Bernat, Roksana / Szczepaniak, Grzegorz / Kamiński, Kamil / Paluch, Marian / Matyjaszewski, Krzysztof / Maksym, Paulina

    Chemical communications (Cambridge, England)

    2024  Volume 60, Issue 7, Page(s) 843–846

    Abstract: In this study, a high-pressure-assisted photoinduced atom transfer radical polymerization ( ...

    Abstract In this study, a high-pressure-assisted photoinduced atom transfer radical polymerization (
    Language English
    Publishing date 2024-01-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d3cc04982e
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  4. Article ; Online: Variation of Activation Volume as an Indicator of the Difference in Clusterization Phenomenon Induced by H-Bonding and F-Π Stacking Interactions in Enantiomers and a Racemate of Flurbiprofen.

    Jesionek, Paulina / Hachuła, Barbara / Jurkiewicz, Karolina / Włodarczyk, Patryk / Hreczka, Marek / Kamiński, Kamil / Kamińska, Ewa

    The journal of physical chemistry. B

    2024  Volume 128, Issue 16, Page(s) 4021–4032

    Abstract: In this paper, X-ray diffraction (XRD), differential scanning calorimetry (DSC), broadband dielectric (BDS), and Fourier transform infrared (FTIR) spectroscopy supported by molecular dynamics (MD) simulations and quantum chemical computations were ... ...

    Abstract In this paper, X-ray diffraction (XRD), differential scanning calorimetry (DSC), broadband dielectric (BDS), and Fourier transform infrared (FTIR) spectroscopy supported by molecular dynamics (MD) simulations and quantum chemical computations were applied to investigate the structural and thermal properties, molecular dynamics, and H-bonding pattern of
    Language English
    Publishing date 2024-04-12
    Publishing country United States
    Document type Journal Article
    ISSN 1520-5207
    ISSN (online) 1520-5207
    DOI 10.1021/acs.jpcb.4c00582
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  5. Article ; Online: AlphaFold2 captures the conformational landscape of the HAMP signaling domain.

    Winski, Aleksander / Ludwiczak, Jan / Orlowska, Malgorzata / Madaj, Rafal / Kaminski, Kamil / Dunin-Horkawicz, Stanislaw

    Protein science : a publication of the Protein Society

    2024  Volume 33, Issue 1, Page(s) e4846

    Abstract: In this study, we present a conformational landscape of 5000 AlphaFold2 models of the Histidine kinases, Adenyl cyclases, Methyl-accepting proteins and Phosphatases (HAMP) domain, a short helical bundle that transduces signals from sensors to effectors ... ...

    Abstract In this study, we present a conformational landscape of 5000 AlphaFold2 models of the Histidine kinases, Adenyl cyclases, Methyl-accepting proteins and Phosphatases (HAMP) domain, a short helical bundle that transduces signals from sensors to effectors in two-component signaling proteins such as sensory histidine kinases and chemoreceptors. The landscape reveals the conformational variability of the HAMP domain, including rotations, shifts, displacements, and tilts of helices, many combinations of which have not been observed in experimental structures. HAMP domains belonging to a single family tend to occupy a defined region of the landscape, even when their sequence similarity is low, suggesting that individual HAMP families have evolved to operate in a specific conformational range. The functional importance of this structural conservation is illustrated by poly-HAMP arrays, in which HAMP domains from families with opposite conformational preferences alternate, consistent with the rotational model of signal transduction. The only poly-HAMP arrays that violate this rule are predicted to be of recent evolutionary origin and structurally unstable. Finally, we identify a family of HAMP domains that are likely to be dynamic due to the presence of a conserved pi-helical bulge. All code associated with this work, including a tool for rapid sequence-based prediction of the rotational state in HAMP domains, is deposited at https://github.com/labstructbioinf/HAMPpred.
    MeSH term(s) Bacterial Proteins/chemistry ; Histidine ; Molecular Conformation ; Signal Transduction ; Histidine Kinase/genetics ; Histidine Kinase/metabolism
    Chemical Substances Bacterial Proteins ; Histidine (4QD397987E) ; Histidine Kinase (EC 2.7.13.1)
    Language English
    Publishing date 2024-01-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1106283-6
    ISSN 1469-896X ; 0961-8368
    ISSN (online) 1469-896X
    ISSN 0961-8368
    DOI 10.1002/pro.4846
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  6. Article: Stereoregulation, molecular weight, and dispersity control of PMMA synthesized via free-radical polymerization supported by the external high electric field

    Chat, Katarzyna / Maksym, Paulina / Kamiński, Kamil / Adrjanowicz, Karolina

    Chemical communications. 2022 May 5, v. 58, no. 37

    2022  

    Abstract: We show the remarkable effect of using static (DC) and alternating (AC) electric fields to control the free-radical polymerization of methyl methacrylate (MMA). The magnitude and/or frequency of the applied electric field (up to 154 kV cm⁻¹) were found ... ...

    Abstract We show the remarkable effect of using static (DC) and alternating (AC) electric fields to control the free-radical polymerization of methyl methacrylate (MMA). The magnitude and/or frequency of the applied electric field (up to 154 kV cm⁻¹) were found to control the molecular weight, dispersity, and stereochemistry of the produced polymers.
    Keywords electric field ; molecular weight ; polymerization ; stereochemistry
    Language English
    Dates of publication 2022-0505
    Size p. 5653-5656.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d2cc01186g
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  7. Article ; Online: High-pressure studies in the supercooled and glassy state of the strongly associated active pharmaceutical ingredient-ticagrelor.

    Jesionek, Paulina / Heczko, Dawid / Hachuła, Barbara / Kamiński, Kamil / Kamińska, Ewa

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 8890

    Abstract: In this paper, the molecular dynamics at different thermodynamic conditions of hydrogen-bonded (H-bonded) active pharmaceutical ingredient-ticagrelor (TICA) have been investigated. Extensive high-pressure (HP) dielectric studies revealed surprising high ... ...

    Abstract In this paper, the molecular dynamics at different thermodynamic conditions of hydrogen-bonded (H-bonded) active pharmaceutical ingredient-ticagrelor (TICA) have been investigated. Extensive high-pressure (HP) dielectric studies revealed surprising high sensitivity of the structural (α)-relaxation to compression. They also showed that unexpectedly the shape of the α-peak remains invariable at various temperature (T) and pressure (p) conditions at constant α-relaxation time. Further infrared measurements on the ordinary and pressure densified glasses of the examined compound indicated that the hydrogen-bonding pattern in TICA is unchanged by the applied experimental conditions. Such behavior was in contrast to that observed recently for ritonavir (where the organization of hydrogen bonds varied at high p) and explained the lack of changes in the width of α-dispersion with compression. Moreover, HP dielectric measurements performed in the glassy state of TICA revealed the high sensitivity of the slow secondary (β)-relaxation (Johari-Goldstein type) to pressure and fulfillment of the isochronal superpositioning of α- and JG-β-relaxation times. Additionally, it was found that the activation entropy for the β-process, estimated from the Eyring equation (a high positive value at 0.1 MPa) slightly increases with compression. We suggested that the reason for that are probably small conformational variations of TICA molecules at elevated p.
    MeSH term(s) Ticagrelor ; Temperature ; Molecular Dynamics Simulation ; Thermodynamics ; Pharmaceutical Preparations
    Chemical Substances Ticagrelor (GLH0314RVC) ; Pharmaceutical Preparations
    Language English
    Publishing date 2023-06-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-35772-7
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  8. Article ; Online: Stereoregulation, molecular weight, and dispersity control of PMMA synthesized

    Chat, Katarzyna / Maksym, Paulina / Kamiński, Kamil / Adrjanowicz, Karolina

    Chemical communications (Cambridge, England)

    2022  Volume 58, Issue 37, Page(s) 5653–5656

    Abstract: We show the remarkable effect of using static (DC) and alternating (AC) electric fields to control the free-radical polymerization of methyl methacrylate (MMA). The magnitude and/or frequency of the applied electric field (up to 154 kV ... ...

    Abstract We show the remarkable effect of using static (DC) and alternating (AC) electric fields to control the free-radical polymerization of methyl methacrylate (MMA). The magnitude and/or frequency of the applied electric field (up to 154 kV cm
    Language English
    Publishing date 2022-05-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d2cc01186g
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Heparan Sulfate, Mucopolysaccharidosis IIIB and Sulfur Metabolism Disorders.

    Kaczor-Kamińska, Marta / Kamiński, Kamil / Wróbel, Maria

    Antioxidants (Basel, Switzerland)

    2022  Volume 11, Issue 4

    Abstract: Mucopolysaccharidosis, type IIIB (MPS IIIB) is a rare disease caused by mutations in the N-alpha-acetylglucosaminidase ( ...

    Abstract Mucopolysaccharidosis, type IIIB (MPS IIIB) is a rare disease caused by mutations in the N-alpha-acetylglucosaminidase (
    Language English
    Publishing date 2022-03-30
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox11040678
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  10. Article ; Online: New Insights from Nonequilibrium Kinetics Studies on Highly Polar

    Tarnacka, Magdalena / Kamińska, Ewa / Paluch, Marian / Kamiński, Kamil

    The journal of physical chemistry letters

    2022  Volume 13, Issue 44, Page(s) 10464–10470

    Abstract: Herein, the annealing of highly polar ( ...

    Abstract Herein, the annealing of highly polar (
    Language English
    Publishing date 2022-11-03
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.2c02672
    Database MEDical Literature Analysis and Retrieval System OnLINE

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