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Rok 2021
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NUMERICAL ESTIMATION OF HULL HYDRODYNAMIC DERIVATIVES IN SHIP MANOUVERING PREDICTION
PublikacjaOperating in crowded waterways pose a risk of accidents and disasters due to maneuvering limitations of the ship. In order to predict ship’s maneuvering characteristics at the design stage, model tests are often executed as the most accurate prediction tool. Two approaches can be distinguished here: free running model tests and numerical simulations based on planar motion model with the use of hydrodynamic derivatives obtained...
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Numerical evaluation of dynamic response of an experimentally tested base-isolated and fixed-base steel structure model
PublikacjaSeismic isolation is recognized as one of the most popular and effective methods of protecting structures during earthquake. The present paper is focused on the comparison be-tween the dynamic responses of buildings with fixed and isolated bases exposed to seismic exci-tations. The aim of the study is to investigate the effectiveness of a simplified base isolation numerical modelling technique using the linear springs. One-storey...
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Numerical investigation on distribution characteristics of oxidation air in a lime slurry desulfurization system with rotary jet agitators
PublikacjaRotary jet agitator is an effective device for mixing, dispersing, dissolving, and suspending dispersed phases in liquid, and is particularly advantageous to the homogenization of oxygen-enriched air within the lime slurry desulfurization system. The distribution of oxygen-enriched air in agitators is vital for the process of gypsum crystallization and the homogeneous and sufficient oxygen-enriched air can promote the formation...
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Numerical Model of Surface and Quasi-Spherical Sea Noise and Its Application to Analysis of DIFAR Systems
PublikacjaVarious types of passive sonar systems are used to detect submarines. These activities are complex and demanding. Therefore, computer simulations are most often used at the design stage of these systems. For this reason, it is also necessary to simulate the acoustic ambient noise of the sea. The article proposes a new numerical model of surface and quasi-spherical sea noise and presents its statistical parameters. The results of...
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Numerical Model of the Aortic Valve Implanted Within Real Human Aorta
PublikacjaCardiovascular system diseases are the main cause of deaths in developed and developing countries. The main reasons are myocardial infarction, heart failure, stroke and valvular diseases. These are caused mainly by arteriosclerosis. The valvular diseases involve a significant burden for the health care system and their frequency is rising with the patient age. This work describes the tools and numerical models appropriate for modeling...
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Numerical Modeling of Hydrogen-Rich Gas Production From Gasoline Autothermal Reforming in a Plug Flow Reactor for Electric Vehicles
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Numerical modelings of ultrashort pulse propagation and conical emission in multimode optical fibers
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Numerical modelling of conical wave formation in multimode optical fibers
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Numerical modelling of the mesofracture process of sintered 316L steel under tension using microtomography
PublikacjaThis paper concerns numerical modelling of the deformation process, taking into account the local fracture of porous 316L sinters at the mesoscopic scale using the finite element method. Calculations are performed with the use of geometrical models, to map the realistic shape of the porous mesostructure of the material, obtained by means of computed microtomography. The microtomographic device has limited and insufficient measurement...
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Numerical simulation of natural convection of Glycol-Al2O3 nanofluids from a horizontal cylinder
PublikacjaThis paper deals with natural convection around a circular cylinder with constant heat flux in a cavity using computational fluid dynamics. As fluids ethylene glycol and a mixture of ethylene glycol with Al2O3 nanoparticles (mass concentrations of nanoparticles: 0.1% and 1%) are chosen. Rayleigh number ranges from 3104 to 3105. The nanofluids are modeled with single-phase approach. For the investigated range of nanoparticle concentration, the...
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Numeryczna analiza dynamiczna wieszaków w łukowym wiadukcie kolejowym. Analiza przypadku
PublikacjaW artykule przedstawiono analizę dynamiczną wiaduktu kolejowego w ciągu Centralnej Magistrali Kolejowej zlokalizowanego koło Huty Zawadzkiej. W analizie zwrócono szczególną uwagę na lokalną odpowiedź wieszaków na obciążenie przejeżdżającym pociągiem oraz wiatrem. Obliczenia przeprowadzono na podstawie wykonanego modelu MES. Zweryfikowano poprawność modelu poprzez porównanie uzyskanych wyników z wartościami pomierzonymi. Przeprowadzono...
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Numeryczna mechanika płynów
PublikacjaNumeryczna mechanika płynów
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Nutrient recovery from deammonification effluent in a pilot study using two-step reject water treatment technology
PublikacjaThe aim of this study was to assess the possibility of phosphorus and nitrogen recovery from the liquid fraction of digestates (reject water) pilot study using a two-step technology, where the precipitation of biogenic compounds in the form of magnesium ammonium phosphate (struvite) will be preceded by a deammonification process. The tests confirmed the possibility of nutrient recovery from deammonification effluent. A removal...
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Nutritional and Health Potential of Probiotics: A Review
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Nutritional behaviors of women and men in Poland during confinement related to the SARS-CoV-2 epidemic
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Nutritional Behaviors of Women and Men in Poland During Confinement Related to the SARS-CoV-2 Epidemic
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Nutritional Value and Biological Activity of Gluten-Free Bread Enriched with Cricket Powder
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Nutritional value and sensory properties of common carp (Cyprinus carpio L.) fillets enriched with sustainable and natural feed ingredients
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Nutritional Value of Jerusalem Artichoke Tubers (Helianthus tuberosus L.) Grown in Organic System under Lithuanian and Polish Conditions
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Rok 2020
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N6-methyladenosine regulates the stability of RNA:DNA hybrids in human cells
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Na tropach Miłosza w Finlandii – przekład, recepcja, odzwierciedlenia bibliograficzne [On the trail of Miłosz in Finland – translation, reception, bibliographic reflections]
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Na3PO4 assistant dispersion of nano-CaCO3 template to enhance electrochemical interface: N/O/P co-doped porous carbon hybrids towards high-performance flexible supercapacitors
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Nadmierne osiadania nawierzchni drogowej w ujęciu geotechnicznym - przyczyny, monitoring, możliwe metody naprawy
PublikacjaNadmierne osiadania nawierzchni stanowią „wieczny” problem użytkowników dróg. Z odkształceniami nawierzchni łączy się obniżenie komfortu i bezpieczeństwa jazdy (BRD). Jedną z podstawowych przyczyn takiego zjawiska jest zachowanie się podłoża gruntowego. Najczęściej dotyczy to zjawiska osiadania podłoża gruntowego, stanowiącego efekt ściśliwości gruntów w wyniku przyłożenia obciążenia i jest przekroczeniem stanów granicznych użytkowalności...
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NADPH Oxidase Gene Polymorphism is Associated with Mortality and Cardiovascular Events in 7-Year Follow-Up
PublikacjaThe CYBA gene encodes the regulatory subunit of NADPH oxidase, which maintains the redox state within cells and in the blood vessels. That led us to investigate the course of coronary artery disease (CAD) with regards to CYBA polymorphisms. Thus, we recruited 1197 subjects with coronary atherosclerosis and observed them during 7-year follow-up. Three CYBA polymorphisms: c.214C>T (rs4673), c.-932G>A (rs9932581), and c.*24G>A (1049255)...
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Nadzorowanie procesu wtryskiwania tworzyw termoplastycznych z wykorzystaniem wielowymiarowych kart kontrolnych
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Nagrzewanie się elementów układu obróbkowego w docieraniu powierzchni płaskich
PublikacjaPrzedstawiono analizę temperatury elementów układu wykonawczego docierarki jednotarczowej przy użyciu kamery termowizyjnej. W badaniach stosowano różne wartości prędkości obrotowej tarczy docierającej oraz dwa zakresy ziarnistości mikroziaren ściernych w dozowanej paście. Obrabiano elementy płaskie wykonane ze stali chromowo - niklowej oraz brązu berylowego.
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Nano Tin/Tin Oxide Attached onto Graphene Oxide Skeleton as a Fluorine Free Anode Material for Lithium-Ion Batteries
PublikacjaHerein, we show a composite formation method of tin/tin oxide nanoparticles with graphene oxide and CMC based on laser ablation technique as an electrode material for energy storage devices. The material exhibited a three-dimensional conducting graphene oxide network decorated with tin or tin oxide nanoparticles. The structure, homogeneous distribution of nanoparticles, and direct contact between inorganic and organic parts were...
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Nanocomposite for photonics — Nickel pyrophosphate nanocrystals synthesised in silica nanoreactors
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Nanoconjugates of graphene oxide derivatives and meso-tetraphenylporphyrin: a new avenue for anticancer photodynamic therapies – Cell-on-a-Chip analysis
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Nanocrystalline diamond sheets as protective coatings for fiber-optic measurement head
PublikacjaFiber-optic sensors find numerous applications in science and industry, but their full potential is limited because of the risk of damaging the measurement head, in particular, due to the vulnerability of unprotected tips of the fiber to mechanical damage and aggressive chemical agents. In this paper, we report the first use of a new nanocrystalline diamond structure in a fiber-optic measurement head as a protective coating of...
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Nanodiamond phantoms mimicking human liver: perspective to calibration of T1 relaxation time in magnetic resonance imaging
PublikacjaPhantoms of biological tissues are materials that mimic the properties of real tissues. This study shows the development of phantoms with nanodiamond particles for calibration of T1 relaxation time in magnetic resonance imaging. Magnetic resonance imaging (MRI) is a commonly used and non-invasive method of detecting pathological changes inside the human body. Nevertheless, before a new MRI device is approved for use, it is necessary...
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Nanofiltration in the food industry
PublikacjaNanofiltration (NF), as a pressure-driven membrane process, has been widely demonstrated to have great potential for food processing applications. There are several advantages of this membrane process over traditional methods that makes NF suitable for food processing, such as the low thermal damage to the product, higher aroma retention, lower energy consumption, and low maintenance costs. In this chapter, according to the recent...
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Nanoindentation tests titanium alloy Ti-6Al-4V after interference laser treatment
PublikacjaThe study aimed was to assess selected mechanical properties of surface layers obtained after interference laser treatment – DLIL of titanium alloy Ti-6Al-4V used for implants. The samples were melted in still air at room temperature, for this purpose Nd:YAG laser was used, the number of laser shots was variable. Next, nanoindentation tests were performed, based on which Young’s modulus and nanohardness in the obtained surface...
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Nanoparticles: Synthesis, characteristics, and applications in analytical and other sciences
PublikacjaNanoparticles (NPs) are widely employed in different research areas, ranging from analytical chemistry and environmental science to medicine, the agriculture and pharmaceutical industry. This is mainly due to the unique characteristics of NPs and the novelty they introduce in such applications. In analytical chemistry, the role of NPs can differ depending on the nature of the steps involved in analytical process. NPs are probably...
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Nanosized carbon black as synergist in PP/POE-MA/IFR system for simultaneously improving thermal, electrical and mechanical properties
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Nanosized zinc, epigenetic changes and its relationship with DMBA induced breast cancer in rats
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Nanostructured polyethersulfone membranes for dye and protein separation: Exploring antifouling role of holmium (III) molybdate nanosheets
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Narracje o świeżej traumie. Upamiętnianie ataków terrorystycznych w krajobrazie codziennym miast
PublikacjaRecent trauma Narratives: commemorating terrorist attacks in Everyday cityscape Contemporary city incidentally becomes a non-accidental target of acts violating the primary sense of security and safety. The fundamental assumptions about so- cial and interpersonal interactions that guarantee social life are severely disturbed. These events, primarily the ones related to terrorist attacks, leave in social memo- ry traces associated...
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Nasal nitric oxide in upper airways in children with asthma and allergic rhinitis
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Natural carbon-based quantum dots and their applications in drug delivery: A review
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Natural carbon-based quantum dots and their applications in drug delivery: A review
PublikacjaNatural carbon based quantum dots (NCDs) are an emerging class of nanomaterials in the carbon family. NCDs have gained immense acclamation among researchers because of their abundance, eco-friendly nature, aqueous solubility, the diverse functionality and biocompatibility when compared to other conventional carbon quantum dots (CDs).The presence of different functional groups on the surface of NCDs such as thiol, carboxyl, hydroxyl,...
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Nauka w świecie cyfrowym okiem młodego inżyniera - metody i aplikacje wspomagające uczenie
PublikacjaW niniejszym artykule opisano metody uczenia się oraz popularne aplikacje wspomagające przyswajanie wiedzy. Jest to kontynuacja poprzedniej części, poświęconej procesowi uczenia oraz najpopularniejszym technikom. Zawarte informacje można traktować jako wskazówki dla osób w trakcie tzw. instytucjonalnej nauki - szkoła, studia, kursy doszkalające - związanej z ciągłą potrzebą samodoskonalenia i podnoszenia kwalifikacji.
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Nauka w świecie cyfrowym okiem młodego inżyniera – proces i techniki uczenia
PublikacjaW obecnym świecie, z uwagi na wszechobecność cyfrowych urządzeń, odtwarzaczy multimedialnych itp., trudno jest skupić uwagę na pojedynczej czynności. Z kolei wzrost dostępnych źródeł informacji powoduje niekiedy rozproszenie i problemy z koncentracją. Naturalne wydaje się skorzystanie z urządzenia osobistego, które posiada niemal każdy z nas, czyli smartfona, w celu poprawy koncentracji i systematycznej pracy. W niniejszym artykule...
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Naukowcy pracują nad poprawą efektywności terapii borowo-neutronowej w chorobach nowotworowych
PublikacjaBadacze konsorcjum zamierzają wspólnie wypracować nowatorską metodologię, która znacznie poprawi kliniczną efektywność terapii boro- wo-neutronowej chorób nowotworowych. Technologia wypracowana przez konsorcjum stanie się podstawą nowych produktów i usług dla klinik onkologicznych w skali globalnej.
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Nawodnienie organizmu w miejscu pracy w mikroklimacie gorącym
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Near Field Coupled Wireless Microwave Sensor
PublikacjaThis paper presents a wireless planar microwave sensor operating at industrial scientific and medical (ISM) frequency for the detection of dielectric materials. The microwave sensor consists of a reader (ground defected microstrip coupled line) and a passive tag where a complementary split-ring resonator (CSRR) is made on the commercially available copper-foil. The CSRR is a peel-off type tag that is excited using the near field...
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Needs assessment study of rare diseases education for nurses and nursing students in Poland
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Needs of Older People Attending Day Care Centres in Poland
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Neoclassical Navier–Stokes Equations Considering the Gyftopoulos–Beretta Exposition of Thermodynamics
PublikacjaThe seminal Navier-Stokes equations were stated even before the creation of the foundations of thermodynamics and its first and second laws. There is a widespread opinion in the literature on thermodynamic cycles that the Navier-Stokes equations cannot be taken as a thermodynamically correct model of a local "working fluid", which would be able to describe the conversion of "heating" into "working" (Carnot's type cycles) and vice...
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Nested Kriging Surrogates for Rapid Multi-Objective Optimization of Compact Microwave Components
PublikacjaA procedure for rapid EM-based multi-objective optimization of compact microwave components is presented. Our methodology employs a recently developed nested kriging modelling to identify the search space region containing the Pareto-optimal designs, and to construct a fast surrogate model. The latter permits determination of the initial Pareto set, further refined using a separate surrogate-assisted process. As an illustration,...