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Katalog Publikacji
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t-SNE Highlights Phylogenetic and Temporal Patterns of SARS-CoV-2 Spike and Nucleocapsid Protein Evolution
PublikacjaWe propose applying t-distributed stochastic neighbor embedding to protein sequences of SARS-CoV-2 to construct, visualize and study the evolutionary space of the coronavirus. The basic idea is to explore the COVID-19 evolution space by using modern manifold learning techniques applied to evolutionary distances between variants. Evolutionary distances have been calculated based on the structures of the nucleocapsid and spike proteins.
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Wpływ lepkości składnika płynnego zawiesiny ściernej dawkowanej w sposób wymuszony na kinematykę docierania i jakość powierzchni płaskich elementów ceramicznych
PublikacjaPrzedstawiono wyniki badań wpływu lepkości składnika płynnego zawiesiny ściernej dawkowanej w sposób wymuszony na przebieg i efekty docierania powierzchni płaskich. Analizowano kinematykę docierania jednotarczowgo oraz jakość elementów ceramicznych po docieraniu.
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Potyczki algorytmiczne, czyli Alicja i Bogdan w nowych sytuacjach. 4. Alicja i Bogdan w samochodzie.
PublikacjaZilustrowano problem przeszukiwania obiektów w nieznanych przestrzeniach na przykładzie jazdy samochodem.
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In silico epitope prediction of Borrelia burgdorferi sensu lato antigens for the detection of specific antibodies
PublikacjaDespite many years of research, serodiagnosis of Lyme disease still faces many obstacles. Difficulties arise mainly due to the low degree of amino acid sequence conservation of the most immunogenic antigens among B. burgdorferi s.l. genospecies, as well as differences in protein production depending on the environment in which the spirochete is located. Mapping B-cell epitopes located on antigens allows for a better understanding...
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The relevance of Cassirer
PublikacjaThe article disscusses the topicality of Cassirer's philosophy and its influence on contemporary humanities.
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Teoria grafów wczoraj i dziś
PublikacjaW pracy naszkicowano kamienie milowe teorii grafów poczynając od pierwszego artykułu Eulera na temat mostów w Królewcu z połowy 18. wieku. Następnie opisano słynny problem 4 barw i jego wariacje. Pracę kończy charakterystyka najnowszych wyzwań teorii grafów.
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Different types of solvability conditions for differential operators
PublikacjaSolvability conditions for linear differential equations are usually formulated in terms of orthogonality of the right-hand side to solutions of the homogeneous adjoint equation. However, if the corresponding operator does not satisfy the Fredholm property such solvability conditions may be not applicable. For this case, we obtain another type of solvability conditions, for ordinary differential equations on the real axis, and...
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Saccharides
PublikacjaSaccharides are widely distributed in nature as the major component of fruits and vegetables (primarily monosaccharides), milk and malt (mainly disaccharides), and grains (mostly polysaccharides). They are an important source of energy, structural material, as well as flavor and taste factors. Molecules of this class of compounds contain mainly carbon, hydrogen, and oxygen atoms; however, most natural saccha- rides do not have...
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Design and experimental verification of multi-layer waveguide using pin/hole structure
PublikacjaThis study presents a novel technique for minimizing RF leakage in metallic hollow waveguides fabricated using the multilayer split-block method. By integrating a pin/hole wall into the split-block multilayers, a substantial reduction of RF leakage can be achieved while reducing the circuit size and mitigating the performance variations. To validate the proposed approach, a slot antenna fed by single ridge waveguide has been prototyped...
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Therapeutic biomaterials – application in neurology and cardiology
PublikacjaBiomaterials are of interest in most medical fields. It's hard to imagine life without them. And due to the ever-increasing demand, scientists are developing new materials. Diseases of the nervous and cardiovascular systems are still a big problem, which are associated with a limited ability to regenerate brain or heart tissues. Therefore, this review discusses the advancement in biomaterial engineering for the treatment of neurological...
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Value co‐creation (VCC) and value co‐destruction (VCD) via open government data (OGD): Empirical case of Tanzania
PublikacjaHaving emphasized upon the potential benefits of Open Government Data (OGD) initiatives via value derivation and innovation pursuits of the stakeholders, it falls in place to complement this line of OGD research in the specific case of Tanzania, a developing country, to support the inferences. Specifically, it is important to understand the manner in which OGD VCC-one of the hinges of OGD initiatives- and OGD VCD-a possible fall...
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Optimization of the System for Determining the Volume of Tissue Needed for Breast Reconstruction
PublikacjaThis article presents techniques for reconstructing surfaces and volume calculations using a point cloud generated from 3D imaging. The main objective of this article was to optimize the voxel size for the most accurate representation of the surface of the female breast. We experimented with different methods for determining volume using images from the Intel D435i camera. In addition, we designed application and measurement station...
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The optimization of CuxO microwires synthesis for improvement in photoelectrochemical performance
PublikacjaOne of the most important challenges in the fabrication of CuxO microstructures via the electrochemical method is formation of long, regular and well-packed microwires with good adhesion on the Cu substrate and to achieve better photoelectrochemical properties, which can be potentially applied in solar-driven water splitting and CO2 conversion to light hydrocarbons. In this paper, Cu2O photoelectrode has been fabricated by direct...
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Emission and properties of airborne wear particles from train brake friction materials based on novolac phenolic resins and butadiene rubbers
PublikacjaThe emission of airborne particulate matter from a train brake depends on the formulation of its friction material. This study investigates the emission and properties of wear particles from train brake friction materials based on straight or resorcinol-modified novolac phenolic resin and nitrile or styrene butadiene rubber used as binding ingredients. The wear particles are generated by a pin-on-disc tribomachine inside an aerodynamic...
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Overcoming Phobias: Harnessing the Power of Immersive Virtual Reality Therapy
PublikacjaThe goal of the chapter was to review the different therapeutic techniques used in the treatment of various forms of phobias, with particular emphasis on virtual reality treatment. We define different types of phobias, including social ones. We also describe treatment techniques – adopted from behavioral therapy – which have been developed to aid the treatment of phobias. Particular emphasis has been placed on the flooding, implosive...
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Exploring Relationships Between Data in Enterprise Information Systems by Analysis of Log Contents
PublikacjaEnterprise systems are inherently complex and maintaining their full, up-to-date overview poses a serious challenge to the enterprise architects’ teams. This problem encourages the search for automated means of discovering knowledge about such systems. An important aspect of this knowledge is understanding the data that are processed by applications and their relationships. In our previous work, we used application logs of an enterprise...
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Zwalczanie przestępczości skarbowej jako aktywny sposób minimalizacji ryzyka podatkowego - case study
PublikacjaCelem pracy jest prezentacja i ocena sposobów zwalczania przestępczości skarbowej jako jeden z podstawowych sposobów minimalizacji ryzyka podatkowego. Metodologia badania - analizie i ocenie poddano wybrane sposoby zwalczania przestępstw skarbowych. Dla osiągnięcia tego celu posłużono się zarówno analizą literatury, jak i materiałów pochodzących ze statystyk sporządzonych przez służby skarbowe oraz policję. Wyniki - wyniki dowodzą,...
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Audyt Krajobrazowy Województwa Pomorskiego. Karta Krajobrazu Priorytetowego. Żuławy: Złotowo. Opinia Ekspercka
PublikacjaOpinia ekspercka dla Karty Krajobrazu Priorytetowego Żuławy: Złotowo, symbol obszaru: 22-313.54-83, do Audytu Krajobrazowego Województwa Pomorskiego
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Mechanika kontaktu w charakteryzowaniu materiałów inżynierskich
PublikacjaW pierwszej części pracy przedstawiono teoretyczne podstawy mechaniki kontaktu. Omówiono model kontaktu Hertza opisujący zależność pomiędzy obciążeniem przyłożonym do kulistego wgłębnika i jego przemieszczeniem. W dalszej części scharakteryzowano modele niehertzowskie, w których pod uwagę bierze się siły adhezji. Przedstawiono dwa modele uwzględniające adhezyjne przyciąganie sferycznego wgłębnika i podłoża, tj. model Johnsona,...
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Potyczki algorytmiczne, czyli Alicja i Bogdan w nowych sytuacjach. 5. Alicja kupuje buty.
PublikacjaNiniejszy miniesej pokazuje, w jaki sposób można efektywnie przeszukiwać uporządkowane tablice 2-wymiarowe oraz, w jaki sposób można radzić sobie (niekiedy) z trudnymi problemami obliczeniowymi.
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A Novel [4+2] Cycloaddition Reaction Involving Lawesson’s Reagent. Structure and Specific Fragmentations of a New Cyclic 1,2-Thiaphosphinane-4-one
PublikacjaA crude morpholine enamine of acetone treated with Lawesson’s reagent unexpectedly yielded a six-membered thiaphosphinane-4-one. This compound is the first example of a new class of heterocycles. It has been proven that it is formed from 4-methyl-2-morpholino-1,3-pentadiene which is usually present in crude morpholine enamine batches. A mechanism of this regioselective reaction was postulated and a characteristic chair-like conformation...
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Potyczki algorytmiczne, czyli Alicja i Bogdan w nowych sytuacjach. 3. Alicja i Bogdan remontują mieszkanie.
PublikacjaPoniższe zagadki nawiązują z jednej strony do problemu kafelkowania płaszczyzny, który jest nierozstrzygalny, z drugiej do problemu rozkroju wstęgi, który jest NP-trudny. Jednakże przypadki szczególne, które tu rozważamy, nie są tak trudne i mogą być rozwiązane za pomocą algorytmów działających w czasie wielomianowym.
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XXXII AUKCJA WIELKIEGO SERCA
PublikacjaXXXII Aukcji Wielkiego Serca na rzecz Specjalnego Ośrodka Szkolno-Wychowawczego nr 1 im. Jana Matejki – jednej z najstarszych placówek kształcącej młodzież o specjalnych potrzebach edukacyjnych w Krakowie. Obecny rok szkolny to już 77. rok istnienia ośrodka. Organizowana pod patronatem BCC aukcja to wyjątkowa okazja dla miłośników i kolekcjonerów polskiej sztuki współczesnej. Kolejny raz będzie można obcować z dziełami artystów,...
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Sensitive method for determination of benzoic acid in beverages and food samples using air–assisted hydrophobic deep eutectic solvent-based dispersive liquid-liquid microextraction
PublikacjaA simple, reliable and rapid air–assisted hydrophobic deep eutectic solvent-based dispersive liquid–liquid microextraction (AA-HDES-DLLME) was developed for analysis of benzoic acid in various beverages and food samples. The final determination stage was performed via UV–visible spectrophotometry. The key parameters (extraction time, HDES type and volume, dispersant volume, pH and sample volume) of the AA-HDES-DLLME method were...
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Fuel price, income and road safety as determinants of the level of the population’s economic well-being in Poland
PublikacjaThe opportunity to travel is one of the most favorite human activities, given that on a trip a person gets new knowledge, impressions and positive emotions. Recreational trips occupy a prominent place in the concept of the economics of happiness, and the study of factors that influence decision-making regarding travel is important for forecasting the number of tourists, infrastructure development, income and expenses of businesses...
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Grafo-mania, czyli rzecz o grafach i algorytmach. Gry chromatyczne na grafach.
PublikacjaW minieseju analizujemy grę 2-osobową, polegającą na tym, że Alicja i Bogdan współdziałają by pomalować mapę narysowaną na płaszczyźnie.
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Development of a vortex-assisted switchable-hydrophilicity solvent-based liquid phase microextraction for fast and reliable extraction of Zn (II), Fe (II), Pb (II), and Cd (II) from various baby food products
PublikacjaThis manuscript describes the development of a novel liquid phase microextraction (LPME) method for the extraction and determination of Zn (II), Fe (II), Pb (II), and Cd (II) in various infant/baby food and supplements products. The method is based on vortex-assisted extraction combined with a switchable-hydrophilicity solvent (SHS) sample preparation. The SHS, which undergoes reversible phase changes triggered by pH change, enables...
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Nondestructive corrosion degradation assessment based on asymmetry of guided wave propagation field
PublikacjaThe article presents the results of numerical and experimental investigation of guided wave propagation in steel plates subjected to corrosion degradation. The development of novel procedures allowing for the assessment of the corrosion degradation level is crucial in the effective diagnostics of offshore and ship structures that are especially subjected to aggressive environments. The study’s main aim is to investigate the influence...
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Simple smartphone-based methods for the determination of bioactive compounds in wine
PublikacjaA set of simple smartphone-based methods of bioactive compounds determination were developed for wine analysis. Procedures for smartphone-based determination of the total content of phenolic compounds, flavonoids, anthocyanins and biogenic amines, as well as measurement of antioxidant activity were developed and fully validated. The experimental setup is based on smartphone and 3D-printed device, though it is very simple and can...
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Effect of pulse laser treatment at different process variables on mechanical behavior of carbon nanotubes electrophoretically deposited on titanium alloy
PublikacjaPurpose: Titanium and its alloys are widely used as biomaterials for long-term implants, but they are usually surface-modified due to their weak bioactivity and wear resistance. Laser processing was used to modify the surface layer, and elemental carbon was a component of the deposited coatings. This research aims to use a combination of both methods based on preliminary electrophoretic deposition of multi-wall carbon nanotubes...
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Innovative strategies: Combining treatments for advanced wastewater purification
PublikacjaWater scarcity is a pressing global challenge, driving the urgent need for effective wastewater treatment solutions. With untreated wastewater extensively employed, particularly in agriculture, the significance of proper treatment becomes evident, as it presents a more practical and ecologically responsible alternative. This chapter explores the diverse treatment approaches encompassing chemical, physical, and biological methods,...
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Panopticum 1.0 Curator's choice
PublikacjaWystawa zbiorowa 7 artystów współpracujących z galerią jest kuratorskim wyborem prac w których dominującymi kolorami są czerń i biel. Kuratorem wystawy jest Natalia Bimer
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Gospodarka w dobie pandemii Covid-19. Wybrane zagadnienia
PublikacjaMonografia ukazuje problemy gospodarek Polski , Kazachstanu i Ukrainy w okresie pandemii Covid-19 oraz programy naprawcze które podjęły rządy tych państw by zmniejszyć skutki wywołane lockdownem i spowolnieniem gospodarczym.
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Ogólnopolski Konkurs Prototypów Koncepcji Kreatorskich ‘NIE_MATERIA’ - laureatki 1. etapu
PublikacjaSpośród 200 uczestników wyłoniono 7 Zespołów Laureatów 1.etapu wskazanych do kontynuacji pracy projektowej nad prototypem NIE_MATERII. Wydarzenie kontynuowane w formie publicznej prezentacji projektu i wystawy jest elementem Festiwalu. Festival ART&DESIGN 2023 jest premierowym wydarzeniem podsumowującym roczny projekt „Design w procesie” - cykl wystaw, konferencji warsztatowych i naukowych oraz warsztatów edukacyjnych. Festival...
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Paintings
PublikacjaThe painting as a curtain (...) A contradiction is therefore what constitutes a painting, and ambiguity is its right. As a young artist, I intuitively defined the work of art as a boundary. Over the years that intuition changed into a conviction that the particular form of art which is painting at the same time reveals and hides; it exists at this intersection of functions as a see-through curtain. We don’t know why there are some...
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„Osiem kobiet”, ogólnopolska wystawa malarstwa, grafiki i rzeźby, Muzeum Śremskie.
Publikacja„Osiem kobiet”, ogólnopolska wystawa malarstwa, grafiki i rzeźby, Muzeum Śremskie. W wystawie biorą udział: Dominika Krechowicz, Jowita Mormul, Paulina Komorowska-Birger, Monika Korona, Joanna Trzcińska, Katarzyna Słuchocka, Joanna Stefańska, Natalia Wegner. Kuratorstwo wystawy: Katarzyna Słuchocka, Joanna Stefańska, Instytut Architektury Wnętrz i Wzornictwa Przemysłowego, Wydział Architektury Politechniki Poznańskiej
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Defected Ag/Cu-MOF as a modifier of polyethersulfone membranes for enhancing permeability, antifouling properties and heavy metal and dye pollutant removal
PublikacjaIn this study, a novel bimetallic metal-organic framework (MOF) i.e. Ag/Cu-MOF was synthesized using a solvothermal method and later incorporated at different concentrations (0.1–2 wt%) using a phase inversion method for modification and antifouling property improvement of polyethersulfone (PES) membranes. The resulting Ag/Cu-MOF characteristics were investigated using different techniques, such as FTIR, XRD, FE-SEM and EDX. The...
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Terminal charging scheduling of battery electric buses based on vehicle routing problem
PublikacjaElectric buses are considered to be a viable solution for reducing emission in dense urban areas. However, the greater charging time is a huge challenge for operators. In this paper, charging scheduling method was elaborated based on vehicle routing problem using mixed-integer linear programming model. The main novelty of the paper is the combination of modelling aspect, namely flexible turn sequence and heterogeneous shared charging...
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Do clusters help companies to "go green"? Experience of Polish National Key Clusters
PublikacjaThis study aims to explore cluster activity in the field of green transformation, taking into account the green, low-carbon and circular economy. Our intention was to identify the main green practices used by cluster organizations, which we showed through the lens of the attributes of both the cluster and the cluster organization. Through our study, we sought to answer the question: what is the role of cluster organizations in...
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Investigation of vortex assisted magnetic deep eutectic solvent based dispersive liquid–liquid microextraction for separation and determination of vanadium from water and food matrices: Multivariate analysis
PublikacjaA new and simple vortex assisted magnetic deep eutectic solvent dispersive liquid–liquid microextraction procedure (VA-MDES-DLLME) was developed for the determination of vanadium (V) in food and water samples by flame atomic absorption spectrometry (FAAS). In the extraction medium, a bis(acetylpivalylmethane) ethylenediimine (H2APM2en) was used for the complexation of V(V) in sample solution at pH 6. The VA-MDES-DLLME was optimized...
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Approximation algorithms for job scheduling with block-type conflict graphs
PublikacjaThe problem of scheduling jobs on parallel machines (identical, uniform, or unrelated), under incompatibility relation modeled as a block graph, under the makespan optimality criterion, is considered in this paper. No two jobs that are in the relation (equivalently in the same block) may be scheduled on the same machine in this model. The presented model stems from a well-established line of research combining scheduling theory...
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Sport-related concussion alters cerebral hemodynamic activity during controlled respiration
PublikacjaThis study investigated cerebral hemodynamic activity following sport-related concussion. Prefrontal cortex oxygenation was assessed by near-infrared spectroscopy (NIRS) during a controlled breathing protocol. Wavelet transformation of the NIRS signals showed significant decreases in HbO2 and HbD amplitude at the respiratory frequency interval (0.10–0.6 HZ) from preseason baseline to acute concussion. These results suggest a decreased...
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Requirements for Residual Current Devices Intended for Electric Vehicle Charging Systems
PublikacjaThe properties of residual current devices have been presented from the point of view of their ability to detect a specific shape of the residual current waveform. Moreover, the standard requirements relating to residual current protection used in electric vehicle charging installations have been pointed out. The operating characteristics of the IC-CPD and RDC-DD protections, which are intended for charging electric vehicles in...
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Towards hand grip force assessment by using EMG estimators
PublikacjaThe purpose of this study was to propose a method to assess individual regression (calibration) curves to establish a relationship between an isometric grip force and surface electromyography (EMG) estimator. In this study 18 healthy volunteers (12 male (23.0 ± 2.0 years) and 6 female (23.2 ± 0.7 years)) had been examined. Ten EMG estimators (mean absolute value, root mean square, entropy, energy, turns per second, mean of zero...
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Tam gdzie fikcja spotyka się z rzeczywistością
PublikacjaNa tyłach budynku A Wydziału Elektroniki, Telekomunikacji i Informatyki (tego z zerami i jedynkami na elewacji) mieści się laboratorium odmienne wyglądem od innych laboratoriów politechnicznych. Zajmuje ono sięgającą czwartego piętra czarną sześcienną kostkę dobudowaną 10 lat temu w bezpośrednim sąsiedztwie audytorium, któremu od dwóch lat patronuje doc. Marianna Sankiewicz, przysiadłszy na ławeczce przed jego wejściem. Wydaje...
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Substrate Integrated Waveguide-Based Frequency-Tunable Self-Octaplexing Antenna
PublikacjaThis communication presents the first-ever substrate integrated waveguide (SIW)-based frequency-tunable self-octaplexing antenna (SOA) for wireless communication. The structure is arranged by implementing eight distinct patches with planar 50-ohm feedlines at the top of the SIW cavity, which realize eight distinct resonant frequencies. Independent tuning of each resonant frequency is achieved by incorporating appropriately allocated...
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More than just a beer – Brewers' spent grain, spent hops, and spent yeast as potential functional fillers for polymer composites
PublikacjaBeer is among the most popular beverages in the world, with the production distributed uniformly between the biggest continents, so the utilization of brewing by-products is essential on a global scale. Among their potential recipients, the plastics industry offers extensive range of potential products. Herein, the presented study investigated the application of currently underutilized solid brewing by-products (brewers' spent...
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Performance and Energy Aware Training of a Deep Neural Network in a Multi-GPU Environment with Power Capping
PublikacjaIn this paper we demonstrate that it is possible to obtain considerable improvement of performance and energy aware metrics for training of deep neural networks using a modern parallel multi-GPU system, by enforcing selected, non-default power caps on the GPUs. We measure the power and energy consumption of the whole node using a professional, certified hardware power meter. For a high performance workstation with 8 GPUs, we were...
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Potyczki algorytmiczne, czyli Alicja i Bogdan w nowych sytuacjach
PublikacjaPowracamy tutaj do zagadki sprzed 4 lat pod tym samym tytułem, którą uzupełniamy nowymi komentarzami i nowymi zagadkami na ten temat. Pozwala to nam zilustrować szerzej zasady działania algorytmu zachłannego.
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Emulsifying blends based on natural fats for eco-design of O/W emulsions
PublikacjaEmulsifier blends are most often used to stabilize and modulate the properties of cosmetic and pharmaceutical emulsions, such as skin care or application-related consistency. However, the rational design of such emulsifier blends is often not well understood, especially when their ingredients are natural raw materials. This study aimed to analyze the influence of natural fatty ingredients selected as emulsifiers on the emulsion...