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Research on the application of the extended Kalman filter (EKF) in vector-controlled induction motor drive, designed to ensure tolerance against various types of current sensor (CS) faults
No full textThis research focuses on the application of the extended Kalman filter (EKF) in vector-controlled induction motor drive, designed to ensure tolerance against various types of current sensor (CS) faults. The EKF-estimated stator currents are initially used in a residual-based detector. In the event of a current sensor fault, these estimated currents replace the faulty measurements to compensate for the failure. To enhance current estimation accuracy, the EKF also estimates the coefficient 'd', which compensates for variations in both motor resistances. Simulation studies validate the effectiveness of the proposed approach in handling different types of CS faults, including gain changes, offsets, saturation, and complete signal loss, under various operating conditions, including regenerative braking.The data presented in the attached set are the results of simulation studies of a detection and compensation system for stator current sensor faults based on the Extended Kalman Filter (EKF), dedicated to a vector-controlled induction motor drive,. described in details in the mentioned publication (M. Miniach, T. Orlowska-Kowalska, Adamczyk M., Application of the extended Kalman filter in current sensors fault-tolerant control of the induction motor drive, 2024 IEEE 21st International Power Electronics and Motion Control Conference (PEMC); 30 September 2024 - 03 October 2024 , Pilsen, Czech Republic, https://doi.org/10.1109/PEMC61721.2024.10726418).The simulations were carried out in the MATLAB/Simulink environment.The considered system includes two current sensors (on phase A and B), each of which may be subjected to the following faults:OC – complete signal loss; G – gain error; OFF – occurrence of a DC component; SAT – saturation.File Description:1) Folders:"m100_A-OC_B-G07" contains measurements for:operation under a load equal to 100% of the rated torque,phase A sensor fault type: OC,phase B sensor fault type: G (actual current scaled by a factor of 0.7)."m30_A-OFF02_B-SAT03" contains measurements for:operation under a load equal to 30% of the rated torque,phase A sensor fault type: OFF (signal offset by +0.2),phase B sensor fault type: SAT (signal value limited to ±0.3).2) Included Signals (all expressed in per unit, p.u.):d_ref, d_EKF – coefficient "d" values: reference and EKF-estimated, respectively,isA_IM, isB_IM – actual phase currents,isA_faulty, isB_faulty – phase currents measured by the faulty sensor,isA_EKF, isB_EKF – phase currents estimated by EKF,lambda_detektor, lambda_real – fault coefficient: defined by the detector and reference, respectively [1-no fault, 2-sensor A faulty, 3-sensor B faulty, 4-both sensors broken];w_ref, w_mea – reference and measured speed, respectively,t_em – electromagnetic torque,psira_IM, psirb_IM – actual alpha-beta components of the rotor flux,psira_EKF, psirb_EKF – alpha-beta components of the rotor flux estimated by EKF.</p
Synthesis, Antimicrobial Activity, and Tyrosinase Inhibition by Multifunctional 3,4-Dihydroxy-Phenyl Peptidomimetics
No full textDane do publikacji: Synthesis, Antimicrobial Activity, and Tyrosinase Inhibition by Multifunctional 3,4-Dihydroxy-Phenyl Peptidomimetics </p
Phage-Nanoparticle Cocktails as a Novel Antibacterial Approach: Synergistic Effects of Bacteriophages and Green-Synthesized Silver Nanoparticles
No full textBacteriophages have emerged as promising natural antibacterial agents, offering a targeted approach to combating bacterial infections. While phage-antibiotic cocktails are widely explored to enhance antibacterial efficacy and prevent resistance, research on phage-nanoparticle combinations remains limited. However, antibiotic resistance continues to rise, necessitating alternative strategies. Combining bacteriophages with nanoparticles presents a novel approach that could enhance antibacterial potency while reducing the risk of resistance, yet studies in this area are still scarce. We explore the synergy between green tea extract-capped silver nanoparticles (G-TeaNPs) and bacteriophages in combating pathogenic bacteria (Staphylococcus aureus, Salmonella enterica). G-TeaNPs show no antiphage activity, ensuring compatibility in phage-NP formulations. These combinations significantly reduce bacterial counts in a short time (only 3 hours), e.g., S. aureus survival is around 30% after incubations with just 0.001 mg/mL of G-TeaNPs, with G-TeaNPs and phages alone result in around 80% and 70% survival, respectively. Cytotoxicity tests against eukaryotic 3T3 NIH fibroblast cells confirmed biocompatibility at effective concentrations. Additionally, we examine G-TeaNPs' impact on the free-living protist Acanthamoeba castellanii. Both green tea extract and G-TeaNPs are capable of reducing A. castellanii cell counts by 80%, but only at concentrations larger than 10 mg/mL. Microscopy revealed nanoparticle uptake by amoebae, causing intracellular accumulation and vacuolization, while green tea extract induced similar changes without uptake. Our findings highlight G-TeaNPs as safe, effective agents in phage-nanoparticle antibacterial formulations with dual antimicrobial and amoebicidal properties for therapeutic and environmental applications.</p
Study of 3–methyl–1,2,3–butanetricarboxylic acid (MBTCA) degradation using mass spectrometry technique and DFT methods
No full textThe energetic stability of the MBTCA anion, a component of biogenic SOA, was investigated using advanced mass spectrometry and DFT modeling. Energetic and reaction studies revealed main degradation pathways: decarboxylation and dehydration. Experimental energies (104–171 kJ/mol) matched theoretical values (107–180 kJ/mol), providing insights into fragmentation conditions and enhancing understanding of SOA chemical aging in the gas phase. The repository contains the original quantum chemical computational files from Gaussian.Please consult the Readme.txt file for additional information. </p
Synthesis and Characterizations of Arsenic Doped FeSe Bulks
No full textExperimental data collected for the preparation of the manuscript: "Synthesis and Characterizations of Arsenic Doped FeSe Bulks"J. Supercond. Nov. Magn. 38, 109 (2025)Abstract:FeSe(11) family has a simple crystal structure belonging to iron-based superconductors (FBS) and has many stable phases including hexagonal and tetragonal structures, but only the tetragonal phase exhibits the superconductivity. In this study, we have investigated the effects of chemical pressure induced by As-doping at Se sites in the FeSe system by preparing a series of FeSe1-xAsx (x = 0.005, 0.01, 0.02, 0.05, 0.1 and 0.2) bulks. A broad characterization has been performed on these samples using structural, microstructural, transport and magnetic measurements. The obtained lattice parameters are increased by As-doping, which suggests the successful insertion of As at Se sites into the tetragonal lattice for low doping contents up to 5%, whereas the higher As substitution appears in the form of the FeAs impurity phase. The temperature dependence of the resistivity of all samples has similar behaviour and depicts the highest onset transition temperature of around 11.5 K, but the zero resistivity is not reached until the measured temperature of 7 K, which could be due to the presence of the impurity phases. Our study suggests that a dopant with a large ionic radius, i.e. arsenic, promotes the formation of the hexagonal phase of the 11 family and is effective for a small amount of doping level for the superconducting properties, whereas higher As-doping levels reduce the superconducting properties.[In the published article, Figure 2 and Figure 3 is Elemental mapping for the constituent elements and scanning electron microscope (SEM) image of FeSe1-xAsx, respectively]Fig. 1 Powder X-ray diffraction patterns (XRD) at room temperature for the prepared samples FeSe1-xAsx at ambient pressure with x = 0.01, 0.05, 0.1 and 0.2. FeAs, hexagonal (Fe7Se8) and Pt phases are observed as the impurity phases. The Pt impurity phase is observed from the XRD sample holder.Fig. 2 Elemental mapping for the constituent elements of FeSe1-xAsx polycrystalline samples: a–e x = 0.005; f–j x = 0.05 and k–o x = 0.2. For each sample, the first image depicts a scanning electron microscope (SEM) image, and the last image represents the combined image of Fe, Se and As elements. The rest of the images are the elemental mapping of the individual elements.Fig. 3 Backscattered electron image (BSE; AsB) of the samples with a–c x = 0.005, d–f x = 0.05 and g–i x = 0.2 samples. Bright, light grey and black contrasts correspond to Fe7Se8 (hexagonal phase), FeSe1-xAsx and pores, respectively. The black contrast may indicate the presence of the FeAs phase in certain locations.Fig. 4a The variation of resistivity with temperature for all the samples up to the room temperature (300 K). b The variation of low temperature resistivity with temperature ranges from 7 to 20 K. The insets of these figures (a) and (b) illustrate the resistivity variation for the doping content x = 0.1.Fig. 5: The temperature dependence of the normalized magnetic moment (M/M5K) with an applied magnetic field of 50 Oe for FeSe1-xAsx with x = 0.05 and x = 0.2 in zero-field cooling (ZFC) and field cooling (FC) modes. The inset figure shows the variation of the normalized magnetic moment for the sample x = 0.05.Fig. 6 The variation of a room temperature resistivity (ρ300K) and b the onset critical temperature Tc.onset from the resistivity measurements with As-doping content (x).</ul
Proteomic analysis of the cerebral cortex of 8-month-old male Bphl-/- and Bphl+/+ mice
No full text[ENG:]This file contains data regarding comparative proteomics of the cerebral cortex of 8-month-old male Bphl-/- (n=6) and Bphl+/+ (n=5) mice housed under standard conditions. Cortex protein isolation was performed at the Department of Biochemistry and Biotechnology, Poznań University of Life Sciences, using TAEB buffer with 0.1% SDS. Disulfide bridges were then reduced using TCEP and blocked with MMTS. Proteins were digested with trypsin. Peptides were labeled with TMTpro 16-plex and fractionated in a reversed-phase system. Proteomic analysis was performed using an Evosep One coupled to an Orbitrap Exploris 480 mass spectrometer at the Mass Spectrometry Laboratory at the Institute of Biochemistry and Biophysics of the Polish Academy of Sciences in Warsaw. Samples from Bphl-/- mice are marked with tags 1, 3, 5, 7, 11, and 13, while those from Bphl+/+ mice are marked with tags 4, 6, 8, 10, and 12.The CSV file contains data in the following columns: Protein ID, Gene names, Fasta headers, id, Student's T-test Significant BPHL_WT, Student's T-test q-value BPHL_WT, Student's T-test Difference BPHL_WT, Student's T-test Fold change BPHL_WT, Mol. weight [kDa], Q-value, MS/MS count, Razor + unique peptides TMT16plex, Unique peptides TMT16plex, Sequence coverage TMT16plex [%], TMT16plex signals.[PL:]Plik zawiera dane dotyczące porównania proteomów kory mózgowej 8-miesięcznych samców myszy Bphl-/- (n=6) i Bphl+/+ (n=5) hodowanych w standardowych warunkach. Izolację białek z kory mózgowej prowadzono w Katedrze Biochemii i Biotechnologii Uniwersytetu Przyrodniczego w Poznaniu, przy wykorzystaniu buforu TAEB z 0,1% SDS. Następnie mostki disiarczkowe były redukowane z wykorzystaniem TCEP i blokowane MMTS. Białka strawiono trypsyną. Peptydy znakowano za pomocą TMTpro 16-plex i frakcjonowano w układzie faz odwróconych. Przeprowadzono analizę w wykorzystaniem Evosep One połączonego ze spektrometrem masowym Orbitrap Exploris 480 w Środowiskowym Laboratorium Spektrometrii Mas w Instytucie Biochemii i Biofizyki Polskiej Akademii Nauk w Warszawie. Próbki pochodzące od myszy Bphl-/- są oznaczone znacznikami: 1, 3, 5, 7, 11 i 13, a pochodzące od myszy Bphl+/+: 4, 6, 8, 10 i 12.Plik csv zawiera następujące dane w kolejnych kolumnach Protein ID, Gene names, Fasta headers, id, Student's T-test Significant BPHL_WT, Student's T-test q-value BPHL_WT, Student's T-test Difference BPHL_WT, Student's T-test Fold change BPHL_WT, Mol. weight [kDa], Q-value, MS/MS count, Razor + unique peptides TMT16plex, Unique peptides TMT16plex, Sequence coverage TMT16plex [%], TMT16plex signals.</p
Research data for: Effects of multiple edge cracks, shear force, elastic foundation, and boundary conditions on bucking of small-scale pillars
No full textThis dataset contains data used for preparation of the figure in the publication:Darban H, Luciano R, Basista M., Effects of multiple edge cracks, shear force, elastic foundation, and boundary conditions on bucking of small-scale pillars. International Journal of Damage Mechanics. 2023;33(4):247-268. doi:10.1177/10567895231215558.This research has received funding from the National Science Centre (NCN) in Poland through the grant agreement No: UMO-2022/47/D/ST8/01348.The data are listed in *.xlsx and *.txt files. The included data are described in files: meta_data_file.txt.The calculations have been performed with the Maple.</p
Elektrodynamiczne pułapkowanie naładowanych cząsteczek pyłu na potrzeby próbkowania i analizy - the_DUST
No full textWyniki projektu Elektrodynamiczne pułapkowanie naładowanych cząsteczek pyłu na potrzeby próbkowania i analizy - the_DUST. Zamieszczone są pliki zawierające, modele 3D stanowisk eksperymentalnych oraz zdjęć i filmów z przeprowadzonych eksperymentów.</p
Data for figures in publication: "Wetting and emergence of long-range couplings in arrays of fluid cells"
No full textdane do rysunków z wynikami obliczeń z powiązanej publikacji</p
Deep hematologic response to RD treatment in patients with multiple myeloma is associated with overexpression of IL-17R in CD138+ plasma cells
No full textThe aims of the study were to: (i) establish predictors of long-term and profound response at the molecular level to lenalidomide (LEN) treatment of patients with multiple myeloma (MM); (ii) identify alterations in gene expression and in the activity of various molecular pathways elicited by long-lasting exposure to LEN; (iii) recognize potentially targetable pathways induced by long-term exposure to LEN to select the best treatment regimen after relapse or even to provide research rationale for new treatment regimens in the future.To achieve these goals, bone marrow was collected from 8 patients with newly diagnosed multiple myeloma (NDMM) and 8 patients with multiple myeloma treated with lenalidomide and dexamethasone (RD), who achieved at least a very good partial response (VGPR) after treatment.In order to obtain a population of CD138+ cells from the bone marrow, an immunomagnetic isolation method was used. For this purpose, the CD138 MicroBeads kit, human (Miltenyi Biotec, Auburn, AL, USA) was used.RNA was isolated from CD138+ cells from each patient using the RNAqueous-Micro Kit (Thermo Fisher, Waltham, MA, USA) according to the manufacturer’s recommendations. RNA concentration and quality were measured using TapeStation 4510 (Agilent Technologies, Santa Clara, CA, USA).The Illumina Stranded mRNA Prep kit (Illumina, San Diego, CA, USA) and IDT for Illumina RNA UD Indexes Set A, Ligation (Illumina, San Diego, CA, USA) were used for global gene transcription analysis. 500 ng of RNA from each sample was used to prepare the library. The final loading library concentration was 1.2 pM. Sequencing parameters were in accordance with the manufacturer’s recommendations (read length: 2 × 75 bp; read type: paired end; dual index reads; the number of cycles per index read was 10). Sequencing was carried out on a NextSeq 550 instrument (Illumina, San Diego, CA, USA) using NextSeq 500/550 High Output Kit v2.5 (150 cycles) reagents.In order to validate the NGS method, the expression level of selected genes was measured using qRT-PCR. The genes were selected based on NGS results that appear to be important in the development of the body’s response to lenalidomide. Primers for each gene were designed using the BLAST program. 0.1 µg of total RNA was used for reverse transcription. Reactions were performed using a First Strand cDNA Synthesis Kit (Thermo Fisher Scientific, Waltham, MA, USA). qPCR reactions were performed using the SYBR Green PCR Master Mix kit (Bio-Rad, Hercules, CA, USA). The GAPDH gene was used as the endogenous control gene. CFX Maestro Software (Bio-Rad, Hercules, CA, USA) was used to analyze gene expression using the comparative Ct quantification (2ΔCt) method.Bioinformatics analysis was performed in the R environment. Genes with a fold change greater than 2 or less than − 2 were considered differentially expressed genes (DEGs) (p < 0.05).A detailed description of the procedures can be found in article: Łuczkowska, K., Kulig, P., Baumert, B. & Machaliński, B. The evidence that 25(OH)D3 and VK2 MK-7 vitamins influence the proliferative potential and gene expression profiles of multiple myeloma cells and the development of resistance to bortezomib. Nutrients 14(23), 5190 (2022).A global increase in gene expression was found in the RD group compared to NDMM, suggesting the involvement of epigenetic mechanisms. Moreover, upregulation of genes controlling the interaction within MM niche was detected. Next, genes controlling immune response were upregulated. In particular, the gene encoding the IL-17 receptor was overexpressed in the RD group which is a novel finding.Please consult the Readme.txt file for additional information.</p
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