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Wyniki wyszukiwania dla: ft-ir investigation
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Investigation of elastic vulcanizates prepared from rubbermixtures containing devulcanizate additives
PublikacjaW pracy przedstawiono sposób przeprowadzenia procesu dewulkanizacji odpadów gumowych z użyciem oleju talowego, a następnie wykorzystanie produktu dewulkanizacji w mieszance kauczukowej i jej wulkanizacji. Wulkanizaty zawierające dewulkanizat scharakteryzowano poprzez zbadanie właściwości mechanicznych (warunki statyczne) oraz termomechanicznych (warunki dynamiczne).
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Investigation of Sensing Mechanism of Nasicon Electrocatalytic Sensors in Nitrogen Dioxide and Ammonia
PublikacjaW pracy przedstawiono wyniki badań mechanizmu działania czujnika elektrokatalitycznego pracującego w ditlenku azotu i amoniaku.
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Investigation of MIEX® resin sedimentation in the aspect of particle sizes remaining in the supernatant
PublikacjaThe aim of the study was to evaluate the effectiveness of the MIEX® resin sedimentation process, both new and repeatedly used in hybrid water treatment MIEX®DOC + microfiltration (MF) or ultrafiltration (UF) processes (repeatedly regenerated). The tests consisted of performing 1 h sedimentation of the suspension resin in nonflow conditions and analysis of supernatant water at different process durations. The suspension weight analysis...
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Construction and investigation of SO2 amperometric sensor with a solid polymer electrolyte membrane
Publikacjan this paper a sensor for detection of the sulphur dioxide based on three electrode cell configuration with a liquid electrolyte, a mercury sulphate reference electrode and a solid polymer electrolyte working electrode is presented. Working elec- trode was obtained by using Takenaka-Torikai chemical deposi- tion method by precipitation of Au particles into the pores of the Nafion membrane. Sensors characteristics measurements were...
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Supporting High-Tech Crime Investigation through Dynamic Service Integration
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Investigation of the Electrokinetic Properties of Paraffin Suspension. 1. In Inorganic Electrolyte Solutions
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Hybrid carbon-TiO2 spheres: Investigation of structure, morphology and spectroscopic studies
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Investigation of tracking systems properties in CAVE-type virtual reality systems
PublikacjaIn recent years, many scientific and industrial centers in the world developed a virtual reality systems or laboratories. One of the most advanced solutions are Immersive 3D Visualization Lab (I3DVL), a CAVE-type (Cave Automatic Virtual Environment) laboratory. It contains two CAVE-type installations: six-screen installation arranged in a form of a cube, and four-screen installation, a simplified version of the previous one. The...
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Investigation of In-doped BaFeO3−δ perovskite-type oxygen permeable membranes
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Riboflavin binding protein—Chiral stationary phase: Investigation of retention mechanism
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Investigation of mixing time in liquid under influence of rotating magnetic field
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Chapter 6 : Non-intrusive measurement techniques in bubble dynamics investigation
PublikacjaPrzedstawiono wyniki badań dynamiki pęcherzyków parowych i gazowych przy użyciu nieinwazyjnych metod optycznych i akustycznych.
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Investigation of the double isolator using three-strip Ferrite Coupled Line
PublikacjaArtykuł prezentuje badania izolatora skonstruowanego z sekcji trój-paskowej ferrytowej linii sprzężonej. Element został zaprojektowany na dwa sposoby: jako kaskadowe połączenie dwóch cyrkulatorów oraz jako struktura planarna zawierająca rezystory. Izolator zbadano teoretycznie i eksperymentalnie.
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Field investigation and numerical analysis of an inverted pavement system in Tennessee, USA
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Novel investigation of pyrolysis mechanisms and kinetics for functional groups in biomass matrix
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Investigation of Vibro-Acoustical Properties Using Eigenvalue Problem Solution and Wavelets
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Investigation of Anti-Lock Braking System failures using wavelet analysis
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Investigation of OSL signal of resistors from mobile phones for accidental dosimetry
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A simulation investigation into the signal reconstruction accuracy of the transducer with pulse frequency output
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An Investigation of the Thermal Transitions and Physical Properties of Semiconducting PDPP4T:PDBPyBT Blend Films
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Investigation the effect of canted rudder on the roll damping of a twin-rudder ship
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Experimental investigation of the PEM fuel cells performance for automotive and stationary applications
PublikacjaThe aim of the study was to provide dynamic characteristics of the PEM fuel cell system consisted of Nexa modules, provide steady-state characteristics of the for different values of air excess ratio and steady-state characteristics for different stack temperatures and given load.
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Investigation of sensing mechanism of Nasicon electrocatalytic sensors in nitrogen dioxide and ammonia
PublikacjaIn this paper a sensing mechanism of Nasicon electrocatalytic sensor in nitrogen dioxide and ammonia is investigated. Both gases are environmentally hazardous and contain nitrogen atom in the molecule. However, it seems that their sensing mechanism in electrocatalytic sensor could be totally different. Namely, the maximum sensitivity for each gas was obtained at different temperatures. Also, different auxiliary layers are formed...
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Response of a steel tank during earthquakes and mining tremors - experimental investigation
PublikacjaCylindrical steel tanks are very popular shell structures used to store the products of chemical and petroleum industries. Any failure might have disastrous consequences, therefore their safety and reliability is essential. Earthquakes are the most dangerous and also the most unpredictable dynamic loads acting on such structures. On the other hand, mining tremors are usually considered to be less severe due to lower acceleration...
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Investigation of noise threats and their impact on hearing in selected schools - a pilot study.
PublikacjaNoise measurements conducted in selected schools in Gdansk area are presented in this paper. The main aim of this research was to determine noise threats at schools. Some objective measurements of the acoustic climate were performed employing a noise monitoring station engineered at the Multimedia System Department, Gdansk University of Technology. Simultaneously, subjective noise annoyance examinations were carried out among pupils...
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Investigation of solid polymer electrolyte gas sensor with different electrochemical techniques
PublikacjaIn this work solid polymer electrolyte (SPE) amperometric sulphur dioxide sensor is investigated. Nafion was used as a membrane electrode and 1M sulphuric acid as an internal electrolyte. Sensor response to sulphur dioxide was measured. Besides traditional constant voltage amperometry also different electrochemical techniques were used. Results obtained by these methods are compared.
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Investigation of RTS Noise in Reverse Polarized Silicon Carbide Schottky Diodes
PublikacjaOne of the method of electronic device quality and reliability evaluation is observation of its inherent noise. The RTS phenomena usually indicates the presence of large defects in the structure of the material of the device, therefore it can be treated as an indicator of technology quality. In the paper authors present results of RTS investigations in reverse polarized Silicon Carbide Schottky diodes. Devices being studied are...
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Experimental investigation of two-phase thermosyphon heat exchanger charged with acetone
PublikacjaThis paper presents thermal characteristics of prototype of a two-phase thermosyphon heat exchanger (TPTHEx) charged with acetone as a working fluid. The TPTHEx consists of two horizontal cylindrical vessels connected by two risers and a downcomer. Tube bundles placed in the lower and upper cylinders work as an evaporator and a condenser, respectively. The tested TPTHEx operates in a vacuum. Therefore, the working liquid is boiled...
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The smartest location for an eco-district– investigation of urban spatial energy efficiency
Publikacjancreasing awareness concerning environmental aspects of spatial and architectural planning led to more deliberated projects of eco-districts. Located all over the world and constantly being improved, apart from excellent energetical parameters, most of them have one specific characteristic in common, which is location in the outskirts. The aim of this article was to understand the importance of ecological district location depending...
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Investigation of energy deposition and its optical imaging in polymer gel dosimeters
PublikacjaThis following chapter describes methods for verifying the absorbed dose during radiotherapy. Special attention is paid to the method using polymer-gel dosimeters, the dose reading of which is performed by means of Laser Computed Tomography. The chapter also includes considerations on alternative solutions for dosimetric measurements and various types of radiotherapy and their pros and cons. In addition, both the methods of structural...
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Investigation on domestic fruits seed oils in personal care emulsion systems
PublikacjaThe use of fruit seed oils in personal care products is of significance to both their function and image. Poland is an important processor of fruit products within the EU, and thus has a large availability of seeds from domestic fruits, which are normally considered to be a waste material. Unfortunately, current literature is scarce of the suitability of these oils for topical use in the form of cosmetic emulsions. Published data...
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Investigation method and mathematical model of pressure losses in hydraulic rotary motor
PublikacjaTis paper presents a way of determining the coefcient k of the pressure losses Δp (fow drag) in internal ducts 8 Mp of SWSB-63 hydraulic motor. Te coefcient is determined at a fow rate equal to the theoretical capacity Q of the Pt pump feeding the motor , the losses are related to the nominal pressure p in the hydraulic system. Te investigations n followed a model of energy performance of hydraulic rotary motor, proposed by...
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Comprehensive Investigation of Stoichiometry–Structure–Performance Relationships in Flexible Polyurethane Foams
PublikacjaPolyurethane (PU) foams are versatile materials with a broad application range. Their performance is driven by the stoichiometry of polymerization reaction, which has been investigated in several works. However, the analysis was often limited only to selected properties and compared samples differing in apparent density, significantly influencing their performance. In the bigger picture, there is still a lack of comprehensive studies...
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Vibration-Based Investigation of a Historic Bell Tower to Understand the Occurrence of Damage
PublikacjaABSTRACT The paper presents a survey of the historic Arch-cathedral bell tower in Vilnius induced by the appearance of cracks in the structure after a new bell system installation. An attempt is undertaken to identify the reason for the crack occurrence and to check a possible crack influence on global structural behaviour. The research is based on dynamic measurements made in the tower during ambient vibrations and during vibrations...
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Investigation of Acoustic Properties of Poroelastic Asphalt Mixtures in Laboratory and Field Conditions
PublikacjaMeasures for the improvement of acoustic conditions in the vicinity of roads include the construction of pavement structures with low-noise surfaces with optimal macrotexture and the highest possible sound absorption coefficient. Laboratory evaluation of acoustic properties of a designed asphalt mixture before its placement in the pavement is a good solution. Currently, the most popular method for the determination of the sound...
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Ellipsometric investigation of nitrogen doped diamond thin films grown in microwave CH4/H2/N2 plasma enhanced chemical vapor deposition
PublikacjaThe influence of N2 concentration (1%–8%) in CH4/H2/N2 plasma on structure and optical properties of nitrogen doped diamond (NDD) films was investigated. Thickness, roughness, and optical properties of the NDD films in the VIS–NIR range were investigated on the silicon substrates using spectroscopic ellipsometry. The samples exhibited relatively high refractive index (2.6 6 0.25 at 550 nm) and extinction coefficient (0.05 6 0.02...
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Odnawialne źródła energii, W, FT, I st., sem. 4, lato 23/24 (PG_00037308)
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Investigation of Durability Properties for Lightweight Structural Concrete with Hemp Shives Instead of Aggregate
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Comparison of EFD and CFD investigation of velocity fields for selected body-propeller configurations
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Comparison of EFD and CFD investigation of velocity fields for selected body-propeller configurations
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Experimental Investigation of the Properties of Laminated Nonwovens Used for Packaging of Powders in Mineral Warmers
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Detailed investigation on FAME capped metal nanocomposite synthesis as potential antifungal agent
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Theoretical Investigation of Oxazine 170 Perchlorate Doped Polymeric Optical Fiber Amplifier
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Investigation of Thermal Sensing in Fluoroindate Yb3+/Er3+ Co-Doped Optical Fiber
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Investigation of some taste substances using a set of electrodes with lipid-modified membranes.
PublikacjaSkonstruowano 5-cio kanałaowy sensor smaku oparty na elektordach jonoselektywnych z membranami polimerowymi modyfikowanymi lipidem. Badano potencjał elektrod w roztworach kwaśnych zawierających różne stężenie kwasu cytrynowego, solnego i octowego. Sensor jest czuły na stężenia substancji kwaśnych z wyjątkiem kwasu octowego. Testowano nowy typ elektrod zawierających polimer przewodzący PEDT/PSS i kwas oleinowy. Stwierdzono, że...
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Impedance investigation of passive 304 stainless steel in the pit pre-initiation state
PublikacjaZaprezentowano wyniki badań impedancyjnych stali stopowej 304L metodą klasycznej EIS i dynamicznej EIS. Badania związane były z przejściem stali stopowej ze stanu pasywnego do inicjacji powstawania wżerów. Na podstawie zmian parametrów elektrycznego schematu zastępczego stwierdzono, że najbardziej prawdopodobnym mechanizmem tworzenia się wżerów jest model zniszczenia (pęknięcia) warstwy pasywnej.
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Experimental and Numerical Investigation of Mechanical Properties of Lightweight Concretes (LWCs) with Various Aggregates
PublikacjaHigh requirements for the properties of construction materials and activities directed at environment protection are reasons to look for new solutions in concrete technology. This research was directed at solutions affecting the reduction of energy consumption and CO2 emissions. The use of lightweight concretes (LWCs) allows one to meet both conditions at the same time. The purpose of the research presented in this paper was to...
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Porous Phantoms Mimicking Tissues—Investigation of Optical Parameters Stability Over Time
PublikacjaOptical phantoms are used to validate optical measurement methods. The stability of their optical parameters over time allows them to be used and stored over long-term periods, while maintaining their optical parameters. The aim of the presented research was to investigate the stability of fabricated porous phantoms, which can be used as a lung phantom in optical system. Measurements were performed in multiple series with an interval...
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Investigation of Weigh-in-Motion Measurement Accuracy on the Basis of Steering Axle Load Spectra
PublikacjaWeigh-in-motion systems are installed in pavements or on bridges to identify and reduce the number of overloaded vehicles and minimise their adverse eect on road infrastructure. Moreover, the collected trac data are used to obtain axle load characteristics, which are very useful in road infrastructure design. Practical application of data from weigh-in-motion has become more common recently, which calls for adequate attention to...