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- Publikacje 4335 wyników po odfiltrowaniu
- Czasopisma 75 wyników po odfiltrowaniu
- Konferencje 2 wyników po odfiltrowaniu
- Wydawnictwa 1 wyników po odfiltrowaniu
- Osoby 31 wyników po odfiltrowaniu
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- Dane Badawcze 1204 wyników po odfiltrowaniu
wyświetlamy 1000 najlepszych wyników Pomoc
Wyniki wyszukiwania dla: forest age structure
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The impact of road network structure and mobility on the national traffic fatality rate
PublikacjaW pracy określono wpływ wybranych miar struktury sieci drogowej i mobilności mieszkańców na wskaźnik śmiertelności w wypadkach drogowych na bazie dostępnych danych z wielu krajów świata. Opracowano wieloczynnikowe modele nieliniowe pozwalające na określenie wpływu wielu istotnych czynników: ekonomicznych, systemowych, motoryzacyjnych i infrastrukturalnych na bezpieczeństwo ruchu drogowego mierzonego wskaźnikiem śmiertelności RFR.
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Photogrammetry image-based approach for imperfect structure modelling and FE analysis
PublikacjaThis study aims to model and analyse imperfect tructures using real measurements, employing photogrammetry technique commonly used in the geodesy. The study highlights the capability of the photogrammetry in aiding the structural analysis of imperfect engineering objects. Firstly, the photogrammetry measurements of a stiffened plate are carried out using a specially designed for the purpose experimental stand. Then, the plate surface...
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The structure of Pb-PbO-SiO2 glass via molecular dynamics simulation
PublikacjaPraca poświęcona jest badaniom struktury blisko i średniozasięgowej częściowo zredukowanego szkła ołowiowo-krzemianowego o stechiometrii 1Pb1PbO1SiO2 uzyskanego na drodze symulacji dynamiczno-molekularnych. Otrzymane rezultaty porównamy z danymi otrzymanymi dla szkła niemodyfikowanego (2PbO1SiO2) i całkowicie zredukowanego (2Pb1SiO2).
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Granulometric analysis to etimate influence of anionic surfactrant on activated sludge structure
PublikacjaThe work concerns the evaluation of the possibility of using laser diffraction analyzer to determine changes in the distribution of sludge floc size in the presence of anionic surfactant. As a model of surfactant linear alkylbenzyne sulphonate (LAS) was used. The granulometric analysis showed that the pure activated sludge was composed of particles with a size of 0,001 to 2 mm. The largest and fastest changes in the distribution...
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Phosphinoborenium cations stabilized by N-heterocyclic carbenes: synthesis, structure, and reactivity
PublikacjaPhosphinoborenium cations stabilized by N-heterocyclic carbenes (NHCs) were synthesized via the reaction of bromo(phosphino)boranes with NHCs. Their structures were investigated by heteronuclear magnetic resonance spectroscopy, X-ray diffraction, and density functional theory calculations. They possess a planar trigonal boron center directly bonded with the pyramidal phosphanyl group (PR2) and can be treated as cationic phosphinoboranes....
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Wpływ struktury siluminu na skrawalność = Effect of silumin structure on machinability
PublikacjaBadano odlewy ciśnieniowe ze siluminu EN AC-AlSi7Cu2 pochodzące z dwóch partii różniące się skrawalnością, w zakresie składu chemicznego, mikrostruktury na mikroskopie świetlnym i skaningowym z EDS oraz składu fazowego na dyfraktometrze rentgenowskim. Stop o niższej skrawalności posiadał mniejszą dyspersję eutektyki, większe stężenie tytanu w roztworze aluminium, wydzielenia fazy międzymetalicznej Al i Ti oraz większe skupiska...
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Surface structure and propoerties of Ti6Al4V alloy laser melted at cryogenic conditions
PublikacjaPrzedstwiono wyniki badań mikroskopowych i mikrotwardości warstwy wierzchniej poddanej przetapianiu laserem w ciekłym aocie przy mocy laserz 3000-6000 W. Stwierdzono wzrost twardości i utworzenie zróżnicowanej warstwy wierzchniej.
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The Impact of Road Network Structure and Mobility on the National Traffic Fatality Rate
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Investigations of micro-structure evolution in granular shear zones using DEM.
PublikacjaW artykule pokazano rozwój różnych zjawisk mikrostrukturalnych na poziomie ziarna podczas parcia piasku na sztywną ściankę przemieszczającą się poziomo. Obliczenia wykonano stosując metodę DEM. Wyniki na poziomie globalnym porównano z wynikami doświadczalnymi i wynikami MES. Szczególna uwagę zwrócono na rozwój wirów w strefach ścinania.
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Functional and spatial structure analysis – Lower Sopot (Dolny Sopot) district case study, study proposal no 1, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Lower Sopot (Dolny Sopot) district, study proposal no 1, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Lower Sopot (Dolny Sopot) district in the...
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Functional and spatial structure analysis – Lower Sopot (Dolny Sopot) district case study, study proposal no 2, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Lower Sopot (Dolny Sopot) district, study proposal no 2, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Lower Sopot (Dolny Sopot) district in the...
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Functional and spatial structure analysis – Lower Sopot (Dolny Sopot) district case study, study proposal no 4, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Lower Sopot (Dolny Sopot) district, study proposal no 4, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Lower Sopot (Dolny Sopot) district in the...
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Functional and spatial structure analysis – Lower Sopot (Dolny Sopot) district case study, study proposal no 3, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Lower Sopot (Dolny Sopot) district, study proposal no 3, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Lower Sopot (Dolny Sopot) district in the...
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Functional and spatial structure analysis – Lower Sopot (Dolny Sopot) district case study, study proposal no 5, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Lower Sopot (Dolny Sopot) district, study proposal no 5, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Lower Sopot (Dolny Sopot) district in the...
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Functional and spatial structure analysis – Lower Sopot (Dolny Sopot) district case study, study proposal no 6, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Lower Sopot (Dolny Sopot) district, study proposal no 6, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Lower Sopot (Dolny Sopot) district in the...
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The structure of 70(2Bi2O3-V2O5) - 30SrBO7 measured with X-ray diffraction and SEM methods
Dane BadawczeThe structure changes of 70(2Bi2O3-V2O5)-30SrB4O7 glass occurred during increase in temperature was measured by XRD and SEM.
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Structure and electrical properties of Y, Fe-based perovskite mixed conducting composites fabricated by a modified polymer precursor method
PublikacjaIn this work, samples of Y0.07Sr0.93Ti1-xFexO3-d with 20, 40, 60 and 80 mol% of iron amount were prepared by a low-temperature polymer precursor method. The SEM-EDS analysis proved that analyzed Y0.07Sr0.93Ti1-xFexO3-d samples were composites of two Ti- and Fe-rich perovskite samples. This kind of composite consists of two phases in which one has a good ionic and the other electronic conductivity, which makes such a composite a...
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Machine learning-based prediction of residual drift and seismic risk assessment of steel moment-resisting frames considering soil-structure interaction
PublikacjaNowadays, due to improvements in seismic codes and computational devices, retrofitting buildings is an important topic, in which, permanent deformation of buildings, known as Residual Interstory Drift Ratio (RIDR), plays a crucial role. To provide an accurate yet reliable prediction model, 32 improved Machine Learning (ML) algorithms were considered using the Python software to investigate the best method for estimating Maximum...
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Perspectives Medievales-Revue d'epistemologie des Langues et Litteratures du Moyen Age
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Cellulosic bionanocomposites based on acrylonitrile butadiene rubber and Cuscuta reflexa: adjusting structure-properties balance for higher performance
PublikacjaDesign and manufacture of cellulosic nanocomposites with acceptable performance is in the period of a transition from fantasy to reality. Typically, cellulosic nanofillers reveal poor compatibility with polymer matrices. Thus, adjusting the balance between structure and properties of cellulosic bionanocomposites by careful selection of parent ingredients is the first priority. Herein, we incorporated Cuscuta reflexa derived cellulose...
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Application of MARKAL model to optimisation of electricity generation structure in Poland in the long-term time horizon. Part II. Model and forecasts assumptions
PublikacjaIn this paper, the next in a series of publications on the subject, assumptions are presented of a power system development model in terms of electricity generation technology infrastructure in Poland, in the long term perspective until 2060. The model is based on the mathematical structure of the MARKAL optimization package. Among other things developed are a forecast of the final demand for electricity and heat, the current...
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Dependence between Ionic Liquid Structure and Mechanism of Visible-Light-Induced Activity of TiO2 Obtained by Ionic-Liquid-Assisted Solvothermal Synthesis
PublikacjaBecause of the tremendous structural diversityof ionic liquids (ILs), simple transfer of observations performed for one IL used for IL-TiO2 preparation on different samples is not possible. Therefore, four ionic liquids, all containing distinct nitrogen-bearing organic cations (pyridinium, pyrrolidinium, ammonium, imidazolium), were used for the first time for the preparation of IL-TiO2 composites. The role of the individual IL...
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Structure, Physicochemical and Biological Properties of an Aqua (2,2′,2′′-Nitrilotriacetato)-oxidovanadium(IV) Salt with 4-Methylpyridinium Cation
PublikacjaThe crystal structure of a nitrilotriacetate (nta) oxidovanadi-um(IV) salt with 4-methylpyridinium cation, [4-Me(Py)H]+, of [4-Me(Py)H][VO(nta)(H2O)] stoichiometry was determined. The com-plex comprises a discrete mononuclear [VO(nta)(H2O)]–coordinationentity that can be rarely found among other known compounds con-taining nitrilotriacetate oxidovanadium(IV) moieties. The complex wascharacterized by spectroscopic (IR and EPR) methods,...
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The structure of Bi2VO5.5 ceramic prepared by 3 different ways measured with X-ray diffraction
Dane BadawczeThe structure of Bi2VO5.5 ceramics was measured by XRD.
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Erratum to: Pro-Cognitive Properties of the Immunomodulatory Polypeptide Complex, Yolkin, from Chicken Egg Yolk and Colostrum-Derived Substances: Analyses Based on Animal Model of Age-Related Cognitive Deficits
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Woman 49 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Woman 27 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Man 29 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Woman 24 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Man 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Man 53 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with first elbow rests on the armrest, second elbow in the air - Woman 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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Spin-Resolved Band Structure of Hoffman Clathrate [Fe(pz)2Pt(CN)4] as an Essential Tool to Predict Optical Spectra of Metal–Organic Frameworks
PublikacjaParamount spin-crossover properties of the 3D-Hoffman metalorganic framework (MOF) [Fe(pz)2Pt(CN)4] are generally described on the basis of the ligand field theory, which provides adequate insight into theoretical and simulation analysis of spintronic complexes. However, the ligand field approximation does not take into account the 3D periodicity of the actual complex lattice and surface effects and therefore cannot predict a full-scale...
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Progress in non-isocyanate polyurethanes synthesized from cyclic carbonate intermediates and di- or polyamines in the context of structure–properties relationship and from an environmental point of view
PublikacjaCommercially, polyurethanes are produced by the reaction of diisocyanates, polyols (polyester or polyether) and low molecular weight chain extender. Toxicity, moisture sensitivity and phosgene-based synthesis of diisocyanates resulted in investigations focused on obtaining the non-isocyanate polyurethanes (NIPUs). This work presents the review of synthesis and structure–properties relationship of non-isocyanate polyurethanes obtained...
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Fluid structure interaction study of non-Newtonian Casson fluid in a bifurcated channel having stenosis with elastic walls
PublikacjaFluid–structure interaction (FSI) gained a huge attention of scientists and researchers due to its applications in biomedical and mechanical engineering. One of the most important applications of FSI is to study the elastic wall behavior of stenotic arteries. Blood is the suspension of various cells characterized by shear thinning, yield stress, and viscoelastic qualities that can be assessed by using non-Newtonian models. In this...
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CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE
Czasopisma -
Rinsan Shikenj Oha/Journal of the Hokkaido Forest Products Research Institute
Czasopisma -
Functional and spatial structure analysis – Gdańsk-Lower City (Dolne Miasto) district case study, study proposal no 2, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Gdańsk-Lower City (Dolne Miasto) district, study proposal no 2, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Gdańsk-Lower City (Dolne Miasto) district...
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Functional and spatial structure analysis – Gdańsk-Lower City (Dolne Miasto) district case study, study proposal no 3, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Gdańsk-Lower City (Dolne Miasto) district, study proposal no 3, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Gdańsk-Lower City (Dolne Miasto) district...
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Functional and spatial structure analysis – Gdańsk-Lower City (Dolne Miasto) district case study, study proposal no1, February 2021
Dane BadawczeThe data presents results of work within the studies of the conditions of the district in the context of the city, Gdańsk-Lower City (Dolne Miasto) district, study proposal no 1, from February 2021. The goal of the research process was to present the functional and spatial structure analysis of the area located in Gdańsk-Lower City (Dolne Miasto) district...
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Chemical Structure and Thermal Properties versus Accelerated Aging of Bio-Based Poly(ether-urethanes) with Modified Hard Segments
PublikacjaAging of polymers is a natural process that occurs during their usage and storage. Predicting the lifetime of polymers is a crucial aspect that should be considered at the design stage. In this paper, a series of bio-based thermoplastic poly(ether-urethane) elastomers (bio-TPUs) with modified hard segments were synthesized and investigated to understand the structural and property changes triggered by accelerated aging. The bio-TPUs...
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Effect of composition on the thermal properties and structure of M-Al-Si-O-N glasses, M = Na, Mg, Ca
PublikacjaThe primary objective of this study is to explore the relationship between the composition, structure, and thermal characteristics of M-Al-Si-O-N glasses, with M representing sodium (Na), magnesium (Mg), or calcium (Ca). The glasses were prepared by melting in a quartz crucible at 1650 °C and AlN precursor (powder) was utilized as a nitrogen source. The measured thermal properties studied were glass transition temperature (Tg),...
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Effect of bio-based components on the chemical structure, thermal stability and mechanical properties of green thermoplastic polyurethane elastomers
PublikacjaIt seems to be obvious that conditions changes during polyols synthesis have impact on the polyols properties. Even the chemical formula is the same or similar, physicochemical properties and also molecular weight of polyols might be different and are significant in term of future polyurethanes properties and processing. In this work, fully bio-based poly(propylene succinate)s synthesized at different temperature conditions were...
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Structural Variety of Cobalt(II), Nickel(II), Zinc(II), and Cadmium(II) Complexes with 4,4′-Azopyridine: Synthesis, Structure and Luminescence Properties
PublikacjaSelf-assembled bi- and polymetallic complexes of CoII, NiII, ZnII, and CdII were obtained by the reaction of 4,4′-azopyridine (azpy) with metal tri-tert-butoxysilanethiolates (Co, 1; Cd, 2), acetylacetonates (Ni, 3; Zn, 4), and acetates (Cd, 5). All compounds were characterized by single-crystal X-ray structure analysis, elemental analysis, FTIR spectroscopy, and thermogravimetry. Complexes 1, 2 and 4, 5 exhibit diverse structural...
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Kriging-assisted hybrid reliability design and optimization of offshore wind turbine support structure based on a portfolio allocation strategy
PublikacjaIn recent years, offshore wind power generation technology has developed rapidly around the world, making important contributions to the further development of renewable energy. When designing an Offshore Wind Turbine (OWT) system, the uncertainties in parameters and different types of constraints need to be considered to find the optimal design of these systems. Therefore, the Reliability-Based Design Optimization (RBDO) method...
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Determination of Earth Pressure and Displacement of the Retaining Structure According to the Eurocode 7-1
PublikacjaComparative analysis of standard guidelines and findings given in EC7-1 and in Polish Standard PN-83/B-03010. Discussed guidelines concerning active and passive earth pressure as well as at rest pressure state. Wall displacement causing limit states of earth pressure and resistance. Interactive assumptions concerning intermediate earth pressure and resistance values. Conclusions and final remarks.
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Electronic structure calculations in electrolyte solutions: Methods for neutralization of extended charged interfaces
PublikacjaDensity functional theory (DFT) is often used for simulating extended materials such as infinite crystals or surfaces, under periodic boundary conditions (PBCs). In such calculations, when the simulation cell has non-zero charge, electrical neutrality has to be imposed, and this is often done via a uniform background charge of opposite sign (“jellium”). This artificial neutralization does not occur in reality, where a different...
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Structure and magnetic properties of BeO-Fe2O3-Al2O3-TeO2 glass-ceramic composites
PublikacjaIn this work, glass-ceramics in the xBeO–20Fe2O3–(80-x)TeO2 system with x = 0–25 mol% were synthesized by the traditional melt quenching route and studied by inductively coupled plasma optical emission spectroscopy, X-ray diffraction, confocal microscopy, infrared and Raman spectroscopy. BeO addition was found to support the crystallization process of Fe2O3 during melting, and an increased BeO content was associated with an increased...
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Influence of modification by superdispersed powder of aluminum oxide on lead-tin bronze structure
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Phenotypic yield and its structure variability of moderately late and late potato cultivars
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