Filters
total: 6200
-
Catalog
- Publications 4924 available results
- Journals 16 available results
- Conferences 11 available results
- Publishing Houses 1 available results
- People 101 available results
- Projects 2 available results
- e-Learning Courses 70 available results
- Events 11 available results
- Open Research Data 1064 available results
displaying 1000 best results Help
Search results for: Nb doping
-
Quantitative and Qualitative Composition of Bacterial Communities of Malting Barley Grain and Malt during Long-Term Storage
Publication -
Effects of Heat and Momentum Gain Differentiation during Gas Detonation Spraying of FeAl Powder Particles into the Water
Publication -
Correlations between the Poincaré Plot and Conventional Heart Rate Variability Parameters Assessed during Paced Breathing
Publication -
Cognitive costs of reproduction: life‐history trade‐offs explain cognitive decline during pregnancy in women
Publication -
CHANGES IN SELECTED CHEMICAL AND MICROBIOLOGICAL INDICATORS DURING WARM SMOKING PROCESS OF THAWED WHITEFISH (COREGONIS CLUPEAFORMIS)
Publication -
Multicast Traffic Throughput Maximization through Dynamic Modulation and Coding Scheme Assignment in Wireless Sensor Networks
Publication -
Effect of Converting Enzyme Inhibitor on Copper and Iron Concentrations of Blood Plasma in Calves During the Neonatal Period
Publication -
Independent dynamics of slow, intermediate, and fast intracranial EEG spectral activities during human memory formation
Publication -
UNRES-Dock—protein–protein and peptide–protein docking by coarse-grained replica-exchange MD simulations
Publication -
CCDC151 Mutations Cause Primary Ciliary Dyskinesia by Disruption of the Outer Dynein Arm Docking Complex Formation
Publication -
Assessing circadian rhythms during prolonged midazolam infusion in the pediatric intensive care unit (PICU) children
Publication -
In-vivo monitoring of oxygen saturation in murine carcinoma during PDT by diode laser light diffuse reflectance
Publication -
Regarding the “The spiral ladder technique of facial nerve trunk identification during parotidectomy: A convenient roadmap for the beginners”
Publication -
Remote learning among students with and without reading difficulties during the initial stages of the COVID-19 pandemic
PublicationThis article presents the results of a survey on yet under-researched aspects of remote learning and learning difficulties in higher education during the initial stage (March – June 2020) of the COVID-19 pandemic. A total of 2182 students from University of Warsaw in Poland completed a two-part questionnaire regarding academic achievements in the academic year 2019/2020, living conditions and stress related to learning and pandemic,...
-
Three-Dimensional Models of Liver Vessels for Navigation during Laparotomic Attenuation of Intrahepatic Portosystemic Shunt in Dogs
Publication -
Comparison of Muscle Activity During 200 m Indoor Curve and Straight Sprinting in Elite Female Sprinters
Publication -
Sleep Bruxism Contributes to Motor Activity Increase during Sleep in Apneic and Nonapneic Patients—A Polysomnographic Study
Publication -
Psychopathological responses and face mask restrictions during the COVID-19 outbreak: Results from a nationwide survey
Publication -
Lifestyle changes in patients with morbid obesity and type 2 diabetes mellitus during the COVID-19 pandemic
Publication -
Wear of carbide inserts during turning of C45 steel in dry cutting conditions and in presence of emulsion mist
Publication -
The estimation of cutting forces and specific force coefficients during finishing ball end milling of inclined surfaces
Publication -
Bariatric Surgery during COVID-19 Pandemic from Patients’ Point of View—The Results of a National Survey
Publication -
Formation of Surface Topography During Turning of AISI 1045 Steel Considering the Type of Cutting Edge Coating
Publication -
Variations in the near-surface atmospheric electric field at high latitudes and ionospheric potential during geomagnetic perturbations
Publication -
Impact of the “Sling Shot” Supportive Device on Upper-Body Neuromuscular Activity during the Bench Press Exercise
Publication -
Automatic Adjustment of Integration Time in the NIR Camera for Calibrated Temperature Measurement during Inductive Heating Processes
Publication -
O-43 Data-driven selection of active iEEG channels during verbal memory task performance
Publication -
The Effects of Ischemia During Rest Intervals on Bar Velocity in the Bench Press Exercise With Different External Loads
Publication -
Corrigendum: Contrast Tempo of Movement and Its Effect on Power Output and Bar Velocity During Resistance Exercise
Publication -
Transcriptome Changes in Three Brain Regions during Chronic Lithium Administration in the Rat Models of Mania and Depression
Publication -
Independent dynamics of slow, intermediate, and fast intracranial EEG spectral activities during human memory formation
PublicationA wide spectrum of brain rhythms are engaged throughout the human cortex in cognitive functions. How the rhythms of various low and high frequencies are spatiotemporally coordinated across the human brain during memory processing is inconclusive. They can either be coordinated together across a wide range of the frequency spectrum or induced in specific bands. We used a large dataset of human intracranial electroencephalography...
-
Effect of different drying techniques on physical properties, total polyphenols and antioxidant capacity of blackcurrant pomace powders
Publication -
Changes in Eating Behaviour during SARS-CoV-2 Pandemic among the Inhabitants of Five European Countries
Publication -
Emotional distress, burnout and sense of safety during the COVID-19 pandemic in teachers after the reopening of schools
PublicationThe COVID-19 pandemic is having a significant impact on people's psychological well-being and mental health. This study aimed to identify factors linked to emotional distress, burnout and sense of safety in teachers related to the reopening of Polish schools after lockdown, remote work, and the holiday period between March and August 2020. A total of 1,286 teachers from different educational institutions participated in the...
-
A numerical model to simulate the motion of a lifesaving module during its launching from the ship’s stern ramp
PublicationThe article presents a numerical model of object motion in six degrees of freedom (DoF) which is intended to be used to simulate 3D motion of a lifesaving module during its launching from a ship using a stern ramp in rough sea. The model, of relatively high complexity, takes into account both the motion of the ship on water in changing sea conditions, and the relative motion of the ramp with respect to the ship. The motion of the...
-
Investigation of volatile low molecular weight compounds formed during continuous reclaiming of ground tire rubber
PublicationGround tire rubber was thermo-mechanically reclaimed at different temperature conditions (80, 120, 160 °C) using a co-rotating twin screw extruder. The progress of ground tire rubber reclaiming was evaluated with specific mechanical energy, sol fraction and thermogravimetric analysis. Volatile organic compounds (VOCs) including volatile sulfur compounds (VCSs) released from ground tire rubber and ground tire rubber after reclaiming...
-
Heat Transfer During Pool Boiling of Water, Methanol and R141b on Porous Coated Horizontal Tube Bundles
PublicationThis paper presents the results of experimental investigation of water, methanol and R141b refrigerant boiling on horizontal porous coated tube bundles supposed to represent a flooded-type evaporator. Experiments were carried out for a bundle of 19 tubes in triangular layout for two pitch-to-diameter ratio values – 1.7 and 2.0 – in atmospheric and sub-atmospheric pressure conditions. Average heat transfer coefficients – both local,...
-
Docking simulations, Molecular properties and ADMET studies of novel Chromane6,7diol analogues as potential inhibitors of Mushroom tyrosinase
PublicationResearch on inhibition of tyrosinase enzyme has attained significant value, because tyrosinase inhibitors have potential applications in medicine, cosmetics (as whitening agents) and in agriculture (as bioinsecticides). Determination and elucidation of new tyrosinase inhibitors are not only beneficial for medical purposes, but their promising applications in improving food quality and nutritional...
-
Numerical Comparison of Damping Amplification Effects Obtained in Neighborhood of a Mechanism Singular Position - Viscous and Electromagnetic Cases
PublicationIn the paper, results of numerical investigations are presented. A continuous beam is considered as the main vibrating element. Two energy dissipations methods are compared: viscous dampers and DC generators. To increase the damping effectiveness, velocity amplification is proposed, i.e., a mechanism is introduced between the beam and the damping element, and the mechanism configuration is set as closed to the singular position...
-
Dietary intervention with beetroot juice during doxorubicin cancer chemotherapy in vivo reduces markers of oxidative stress
PublicationCancer chemotherapy with doxorubicin, despite high antitumor activity and broad spectrum of this drug, is on decline due to toxic side effects. The clinical efficacy of anthracyclines have continuously prompted the search for new adjuvants to alleviate undesirable side toxicity incurred by this group of cytostatics. The recent approaches involve the application of synthetic or purified natural antioxidants in combination with doxorubicin...
-
Analysis of the bulk solid flow during gravitational silo emptying using X-ray and ECT tomography
PublicationW pracy przedstawiono wyniki pomiarów zmian koncentracji piasku bezkohezyjnego zachodzących w prostokątnym modelu silosu opróżnianym grawitacyjnie. Pomiary wykonano z zastosowaniem kontynualnego promieniowania rentgenowskiego oraz z użyciem tomografii pojemnościowej. Badania wykonano dla zróżnicowanego zagęszczenia początkowego piasku oraz różnego stopnia szorstkości ścian. Szczególny nacisk położono na zachowanie sie materiału...
-
Concentrations of alfa- and gamma- tocopherols in human breast milk during the first months of lactation and in infant formulas
PublicationThe aim of this study was to determine the concentrations of alpha- and gamma-tocopherols in human breast milk samples from different periods of lactation and to compare them with tocopherol content in commercially available formulas for infants at corresponding ages. The study included 93 breast milk samples obtained on the 2nd (colostrum, n=17), 14th (n=30), 30th (n=27) and 90th day of lactation (n=19), along with 90 samples...
-
Heat transfer during pool boiling of water, methanol and R141b on porous coated horizontal tube bundles
PublicationPrzedstawiono wyniki badań eksperymentalnych wrzenia wody, metanolu i R141b na poziomym pęczku rur pokrytych metaliczna powłoką porowatą. Badania przeprowadzono dla podziałek rur 1.7d oaz 2d, przy ciśnieniu atmosferycznym i podciśnieniu.
-
Electrochemical oscillations and bistability during anodic dissolution of vanadium elektrode in acidic media. part 1. Experiment
PublicationDynamiczne niestabilności, oscylacje prądowe i bistabilność obserwowane były podczas anodowego roztwarzania elektrody wanadowej w trakcie badań wykorzystujących techniki stało i zmienno prądowe. Analizowany był wpływ warunków eksperymentalnych jak: stężenia kwasu, temperatury itd. Badania pozwoliły stworzyć diagramy przedstawiające regiony występowania oscylacji i bistabilności.
-
A Mechatronic System for Building the Map of Optimal Spindle Speeds During High Speed Milling of Flexible Details
PublicationW pracy przedstawiono mechatroniczny system tworzenia mapy optymalnych prędkości obrotowych wrzeciona w celu nadzorowania drgań typu chatter podczas frezowania szybkościowego przedmiotów podatnych. System ten składa się z części pomiarowej oraz części obliczeniowej, w której wykorzystuje się oprogramowanie autorskie i komercyjne. Na bazie uogólnionego warunku Liao-Younga utworzono mapy optymalnych prędkości obrotowych wrzeciona,...
-
Oscillatory Mechanism of α-Fe(N) ↔ γ’-Fe4N Phase Transformations during Nanocrystalline Iron Nitriding
Publication -
Cross-talk between DNA damage and cell survival checkpoints during G2 and mitosis: pharmacological implications
PublicationW pracy wyjaśnialiśmy rolę surwiwiny w ochronie komórek w czasie przejścia między G2 i mitozą, traktowanych związkiem uszkadzającym DNA. Jako model komórkowy wybraliśmy komórki ludzkiej białaczki MOLT-4, które wykazują zwiększoną ekspresję białka surwiwiny i niefunkcjonalnym p53. Ekspozycja tych komórek na melfalan, klasyczny związek uszkadzający DNA, prowadzi do uruchomienia punktu kontrolnego w G2 i zablokowania progresji cyklu...
-
Raman investigation of minor component reaction during polymer synthesisprocess. IV Workshop on Atomic and Molecular Physics.
PublicationWykonano badania ramanowskie reakcji zachodzących podczas procesu wytwarzania polimerów hybrydowych w ich części organicznej. Optyczne monitorowanie przebiegu reakcji w czasie rzeczywistym umożliwiło zbadanie ich efektywności oraz czasu trwania. Wyjaśniono też rolę katalizatorów.
-
Reliable OFDM Data Transmission with Pilot Tones and Error-Correction Coding in Shallow Underwater Acoustic Channel
PublicationThe performance of Underwater Acoustic Communication (UAC) systems are strongly related to the specific propagation conditions of the underwater channel. Horizontal, shallow-water channels are characterised by extremely disadvantageous transmission properties, due to strong multipath propagation and refraction phenomena. The paper presents the results of communication tests performed during a shallow, inland-water experiment with...
-
Using water sources extent during inundation as a reliable predictor for vegetation zonation in a natural wetland floodplain
PublicationDistinctive zones of inundation water during floods were shown to originate from different sources in some major floodplains around the world. Recent research showed that the zonation of water in rivers and floodplains is related to vegetation patterns. In spite of this, water source zones were not used for vegetation modeling due to difficulties in their delineation. In this study, we used simulation results of a fully-coupled...