Search results for: TRIPLEX-TUBE
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Triple Helix
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Triplet Formation and Triplet‐Triplet Annihilation Upconversion in Iodine Substituted Non‐Orthogonal BODIPY‐Perylene Dyads
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Triplet Formation and Triplet‐Triplet Annihilation Upconversion in Iodine Substituted Non‐Orthogonal BODIPY‐Perylene Dyads
PublicationBODIPY-perylene dyads have emerged as useful metal free sensitizers for triplet-triplet annihilation upconversion (TTAUC), these dyads are capable of efficient triplet generation via spinorbit charge transfer intersystem crossing (SOCT-ISC). This important route to triplet formation requires dyads in which two moieties are oriented perpendicular to each other. In this contribution, we give a deeper insight on the behavior of recently...
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TUBA-AR
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Effect of tube bundle arrangement on performance of shell-and-tube latent heat storage system
PublicationThis work presents the results of experimental investigation on charging and discharging of latent heat storage systems (LHSS) in the form of shell-and-tube heat exchangers with a variable arrays of the tube bundles. The tests included two tube arrangements – in-line and triangular (staggered), a variable number of tubes in a bundle, two pitch ratios, and different tube positions in a bundle. Three commercial products (LTP56, RT54HC,...
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BODIPY‐Perylene Charge Transfer Compounds; Sensitizers for Triplet‐Triplet Annihilation Up‐conversion
PublicationBODIPY heterochromophores, asymmetrically substituted with perylene and/or iodine at the 2 and 6 positions were prepared and investigated as sensitizers for triplet-triplet annihilation up conversion (TTA-UC). Single-crystal X-ray crystallographic analyses show that the torsion angle between BODIPY and perylene units lie between 73.54 and 74.51, though they are not orthogonal. Both compounds show intense, charge transfer absorption...
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Visualization of water boiling in tube bundle
PublicationW pracy przedstawiono wyniki wizualizacji, za pomocą systemu laserowego noża świetlnego (PIV), wrzenia cieczy w pęku rur. Wykorzystanie systemu PIV umożliwiło analizę skomplikowanej struktury przepływu cieczy podczas wrzenia, a także wzajemnego oddziaływania pomiędzy sekcją grzejną a wrzącą cieczą.
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Triplet–Triplet Annihilation Upconverting Liposomes: Mechanistic Insights into the Role of Membranes in Two-Dimensional TTA-UC
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Electron Binding Capabilities of Some Silylenes Having Small Singlet−Triplet Splittings or Triplet Ground States
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Triplet–Triplet Annihilation Upconverting Liposomes: Mechanistic Insights into the Role of Membranes in Two-Dimensional TTA-UC
PublicationTriplet−triplet annihilation upconversion (TTA-UC) implemented in nanoparticle assemblies is of emerging interest in biomedical applications, including in drug delivery and imaging. As it is a bimolecular process, ensuring sufficient mobility of the sensitizer and annihilator to facilitate effective collision in the nanoparticle is key. Liposomes can provide the benefits of two-dimensional confinement and condensed concentration...
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TRIPLEC-Communication Capitalism & Critique
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Impacts in case of triple unilaterally constrained system
PublicationThe this paper focus on the behaviour of a “rigid” body biting into another “rigid” body, with some nonzero relative velocity. In the presently considered case, the introduced collision appears between a selected element of a multibody structure and its reference body being interpreted as the motionless ground. Instead of the classic case, described in a number of dissertations, where a single impacting contact is considered, three...
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Wettability of Horizontal Stainless Steel Tube by Nanofluid Droplets
PublicationThe goal of the present work was the experimental determination of the contact angle of three nanofluids, i.e. water-Al2O3, water-Cu and water-TiO2 on horizontal stainless steel tube of 1.6 mm OD. Of particular interest was the effect of nanoparticle concentration (0.01%, 0.1%, and 1% by weight) on droplet contact angle.
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Performance of the CMS drift tube chambers with cosmic rays
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Wettability of Horizontal Stainless Steel Tube by Nanofluid Droplets
PublicationThe goal of the present work was the experimental determination of the contact angle of three nanofluids, i.e. water-Al2O3, water-Cu and water-TiO2 on horizontal stainless steel tube of 1.6 mm OD. Of particular interest was the effect of nanoparticle concentration (0.01%, 0.1%, and 1% by weight) on droplet contact angle.
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Triple Combination of Ascorbate, Menadione and the Inhibition of Peroxiredoxin-1 Produces Synergistic Cytotoxic Effects in Triple-Negative Breast Cancer Cells
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Possible singlet-to-triplet pairing transition in Na_xCoO_2 * yH_2O
PublicationW pracy przedstawiono dokładne pomiary górnego pola krytycznego (H_c2) w niedawno odkrytym nadprzewodniku Na_xCoO_2 * yH_2O. Zauważono niezwykłe zachowanie pola krytycznego w funkcji temperatury. W celu wyjaśnienie zjawiska rozwiązano równania Gorkova dla sieci trójkątnej. Eksperymentalny wynik może być interpretowany jako przejście singlet - tryplet wywołane polem magnetycznym.
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Possible singlet-to-triplet pairing transition inNaxCoO2·yH2O
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Tuber Quality
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Experimental research on marine oil-lubricated stern tube bearing
PublicationBearings of propeller shafts are very crucial elements of the propulsion system of each of the ships. The safety of shipping depends on their durability and reliability. The new legal restrictions mean that today we are looking for environmentally friendly solutions. That is why water-lubricated bearings are becoming more and more popular. So, will oil-lubricated shaft bearings belong to the past? The bearing with a white metal...
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Selected Problems of Experimental Testing Marine Stern Tube Bearings
PublicationThis paper presents typical methods for conducting experimental tests on main shaft slide bearings. There are described their possible testing capabilities, advantages, drawbacks and limitations. Various testing methods were analyzed to find a solution able of providing a wide range of possible investigations at possibly acceptable limitations.
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Thermal-Hydraulic Studies on the Shell-and-Tube Heat Exchanger with Minijets
PublicationIn this paper a patented design of a heat exchanger with minijets, with a cylindrical construction is presented. It is followed by the results of its systematic experimental investigations in the single-phase convection heat transfer mode. Based on these results, validation of selected correlations (coming from the literature) describing the Nusselt number was carried out. An assessment of the heat exchange intensification level...
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Horizontal flow boiling of refrigerants inside porous coated tube.
PublicationPrzedstawiono wyniki badań przejmowania ciepła i spadku ciśnienia podczas wrzenia czynników chłodniczych R22, R134a i R407C w poziomej rurce z wewnętrzną powłoką porowatą.
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Heat transfer during pool boiling on smooth tube bundle
PublicationPrzedstawiono wyniki pomiarów współczynnika przejmowania ciepła dla pęku 19 gładkich rurek ze stali nierdzewnej ogrzewanych elektrycznie podczas wrzenia wody destylowanej, metanolu i R141b. Zaproponowano równanie korelacyjne do obliczania średniego współczynnika przejmowania ciepła.
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Pool boiling of water-Cu nanofluid on porous coated tube
PublicationPrzedstawiono wyniki pomiarów współczynnika przejmowania ciepła podczas wrzenia nanocieczy woda-Cu na poziomej rurce pokrytej aluminiową powłoka porowatą o grubości 0.15 mm i porowatości ok. 40%. Koncentracja nanocząstek wynosiła 0.01%, 0.1% oraz 1%. Badania wykonano dla trzech wartości ciśnienia wrzenia: 200 kPa, 100 kPa oraz 10 kPa.
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Thermal Energy Storage with PCMs in Shell-and-Tube Units: A Review
PublicationThe paper presents a survey of the experimental and numerical studies of shell-and-tube systems in which phase change material (PCM) is used. Due to the multitude of design solutions for shell-and-tube systems, the emphasis is placed on double-tube (DT), triplex-tube (TT), and multitube (MT) units. Additionally, only single-pass systems are considered. Particular attention is paid to the method of heat transfer intensification....
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Hydrodynamic functions of emulsion system agitated in the draft-tube reactor
PublicationPrzeprowadzono badania podstawowe sposobu wytwarzania emulsji w reaktorze pętlicowym z mieszaniem. Badano punkt inwersji faz oraz zapotrzebowanie mocy mieszania w zależności od składu emulsji. Zaobserwowano występowanie maksimum mocy mieszania w punkcie inwersji emulsji. Zaobserwowano liniową zależność prędkości cyrkulacji ciągłej fazy wodnej od częstości obrotów mieszadła śmigłowego.
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A Triplet-learnt Coarse-to-Fine Reranking for Vehicle Re-identification
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A Triplet-Learnt Coarse-to-Fine Reranking for Vehicle Re-identification
PublicationVehicle re-identification refers to the task of matching the same query vehicle across non-overlapping cameras and diverse viewpoints. Research interest on the field emerged with intelligent transportation systems and the necessity for public security maintenance. Compared to person, vehicle re-identification is more intricate, facing the challenges of lower intra-class and higher inter-class similarities. Motivated by deep...
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Performance of the domestic micro ORC equipped with the shell-and-tube condenser with minichannels
PublicationIn this paper, the original compact shell-and-tube heat exchanger with circular minichannels of in-house design and manufacturing is presented as the condenser for the domestic micro heat and power plant investigations as well as other future technical applications. The heat exchanger is equipped with turbulizing baffles inside the shell. The shell itself is made of a tubular sleeve having an inner diameter of 0.067 m and the length...
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Metachronous adenocarcinoma in a gastric tube after radical surgery for oesophageal cancer
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In-tube extraction for the determination of the main volatile compounds in Physalis peruviana L
PublicationAn analytical procedure based on in-tube extraction followed by gas chromatography with mass spectrometry has been developed for the analysis of 24 main volatile components in cape gooseberry (Physalis peruviana L.) samples. According to their chemical structure, the compounds were organized into different groups: one hydrocarbon, one aldehyde, four alcohols, four esters, and 14 monoterpenes. By single-factor experiments, incubation...
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Evolution of post welded residual stress due multilayer circumferentialweld of tube.
PublicationOpisano sposób wykorzystania polowego efektu Barkhausena do pomiaru rozkładu naprężeń w spawanych rurach. Przedstawiono procedurę kalibracji oraz wyniki pomiaru naprężeń uzyskanych po stopniowym spawaniu rury.
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Production of fine droplet emulsions in the agitated draft-tube column reactor
PublicationBadano rozkłady wielkości kropel emulsji woda - olej parafinowy w reaktorze dwukolumnowym z mieszaniem w kolumnie wewnętrznej jako strefie wznoszenia. Stosując model dyspersyjny w układzie zamkniętym z całkowitą recyrkulacją, wyznaczono obwodowe i strefowe współczynniki dyspersji
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Pool boiling of water-Al2O3 nanofliud on horizontal porous coated tube
PublicationPrzedstawiono wyniki badań przejmowania ciepła podczas wrzenia w dużej objętości nanocieczy woda-Al2O3 na poziomej rurce z aluminiową powłoką porowatą o grubości 0.15 mm i porowatości 40%. Koncentracja nanocząstek wnosiła 0.01%, 0.1% oraz 1%. Niezależnie od koncentracji współczynnik przejmowania ciepła przy wrzeniu nanocieczy był niższy niż przy wrzeniu wody destylowanej.
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Blind intubation through the supraglottic airway laryngopharyngeal tube with a biohazard suit
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Performance of the CMS drift-tube chamber local trigger with cosmic rays
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Effect of Tube Bundle Arrangement on the Performance of PCM Heat Storage Units
PublicationThe results of comprehensive study on charging and discharging of latent heat storage systems (LHSS) are presented. The multi tube shell-and-tube unit with a variable layouts of the tube bundles are examined. Two tube arrangements – in-line and staggered are tested. A variable number of tubes and different tube positions in a bundle are investigated. Moreover, two pitch ratios are studied. Three commercially available substances...
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Conjugated control of triple active bridge converter with common HFT
PublicationPaper presents synthetic analyses of single input, dual output DC/AC/DC converter with common high frequency transformer. Rise the problem of cross-coupling power flows between secondary terminals, under asymmetrical control operating condition. It also proposes a new approach to converter control, based on conjugated phase shift modulation and defines its limitations. Finally, the developed control technique was verified by simulation...
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Meta-Design and the Triple Learning Organization in Architectural Design Process
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Organic electroluminescence from singlet and triplet exciplexes: Exciplex electrophosphorescent diode
PublicationW pracy zaobserwowano po raz pierwszy elektroluminescencję z trypletowych stanów ekscypleksowych w układzie dwuamina TPD (donor) -organiczny kompleks gadolinu (akceptor). Opsano konstrukcję elektrofosforescencyjnej diody ekscypleksowej.
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Triplet exciton interactions in solid films of an elektrophosphorescent Pt(II) porphyrin
PublicationW pracy pokazano, że fosforescencja porfiryny platynowej (PtOEP) jest wygaszana na skutek oddziaływania między monomerowymi i dimerowymi ekscytonami trypletowymi. Stała oddziaływania dla monomerowych ekscytonów trypletowych wynosi 8x10-12 cm3/s a dla ekscytonów dimerowych 8x10-15 cm3/s.
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Free convection of water-Al2O3 nanofluid from horizontal porous coated tube
PublicationNanofluids are expected to enhance heat transfer in many thermal systems. Present efforts are concentrated on boiling heat transfer of nanofluids, although single phase convection is of key importance in various appliances such as car radiators or heating systems. This paper presents experimental results of heat transfer during free convection of water-Al3O3 nanofluid from horizontal tube covered with metallic porous coating. Contrary...
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Experimental investigation of forced convection of water/EGAl2O3 nanofluids inside horizontal tube
PublicationIn this paper, forced convection of water/EG-Al2O3 nanofluids inside horizontal stainless steel tube is studied experimentally. As base fluid served water/EG mixture of two ratios (60:50 and 50:50). Nanoparticle mass concentrations was 0.1% or and 1%. Transition and turbulent flow regimes were tested. Average heat transfer coefficient and pressure drop values were determined for nanofluids and compared to base fluids. Deterioration...
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Attempt to modeling with FEM of the impact of initial oval shape of tube into creep process.
PublicationOpisano zasady modelowania metodą elementów skończonych zjawiska pełzania dla elementów typu rura oraz pokazano wynik próby modelowania za pomocą MES wpływu początkowej owalności rury na proces pełzania.
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Influence of pressure on heat transfer during pool boiling on smooth tube bundle
PublicationPrzedstawiono wyniki badań eksperymentalnych wrzenia wody, metanolu i R141b na pęu rur głądkich w warunkach podcisnienia i ciśnienia atmosferycznego
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Effective rheological parameters of emulsion during their generation in the agitated draft - tube reactor
PublicationBadano właściwości reologiczne emulsji O/W i W/O w warunkach ich wytwarzania w pętlicowym reaktorze dwukolumnowym z mieszaniem w strefie wznoszenia. Obliczano lepkość pozorną emulsji, wykorzystując model potęgowy Ostwalda - de Waele, w którym szybkość ścinania obliczano jako stosunek prędkości pozornej dyspersji ciecz - ciecz w strefie opadania reaktora i szerokości strefy opadania. W celu identyfikacji typu emulsji mierzono przewodnictwo...
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iGEL vs laryngeal tube for airway management during a normal airway scenario
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An endotracheal tube mounted camera for intubation during cardiopulmonary resuscitation. Preliminary data
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Calibration of the CMS drift tube chambers and measurement of the drift velocity with cosmic rays
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