Filters
total: 4404
filtered: 2726
displaying 1000 best results Help
Search results for: heat tranfer
-
Obstetric and perinatal outcomes following programmed compared to natural frozen-thawed embryo transfer cycles: a systematic review and meta-analysis
Publication -
Charge transfer and europium trapped exciton states in Eu<sup>3+</sup>/Eu<sup>2+</sup> doped phosphors
Publication -
Thermal stabilization and energy transfer in narrow-band red-emitting Sr[(Mg2Al2)1−y(Li2Si2)yN4]:Eu2+phosphors
Publication -
How to determine whether an electron transfer channel is type-II or S-scheme in g–C3N4–based photocatalysts? A critical review
Publication -
Hybrid Monte-Carlo simulations of fluorescence anisotropy decay in disordered two-component systems in the presence of forward and back energy transfer
PublicationW pracy przedstawiono hybrydowy algorytm symulacji Monte Carlo zaniku anizotropii emisji fluorescencji w układach dwuskładnikowych z uwzględnieniem prostego i powrotnego transferu energii. Poprawność nowego algorytmu symulacji Monte Carlo zweryfikowano poprzez porównanie z wynikami obliczeń teoretycznych otrzymanymi w ramach modelu SCDM i z wynikami standardowej symulacji Monte Carlo (algorytm 'step by step').
-
Hybrid Monte-Carlo simulations of fluorescence anisotropy decayin three-component donor-mediator-acceptor systems in the presenceof energy transfer
PublicationW pracy przedstawiono nowy hybrydowy algorytm symulacji Monte-Carlo układu trójskładnikowego donor-mediator-akceptor. Działanie algorytmu zilustrowano na przykładzie zaników anizotropii emisji fluorescencji powyższego układu. Porównano wyniki hybrydowej symulacji Monte-Carlo z wynikami klasycznej metody ''step by step''. Stwierdzono bardzo dobrą zgodność wyników obu symulacji, przy czym algorytm hybrydowy wymaga znacznie krótszego...
-
Mo93m isomer depletion via nuclear excitation by electron capture in resonant transfer into highly excited open-shell atomic states
Publication -
Kinetic and equilibrium studies of the proton and deuteron transfer reaction between bis(2,4-dinitrophenyl)methane and strong nitrogen bases in acetonitrile
Publication -
Preparation, characterization and charge transfer studies of nickel – modified and nickel, nitrogen co-modified rutile titanium dioxide for photocatalytic application
Publication -
Complementary Use of Multi-dimensional Gas Chromatography and Proton Transfer Reaction Mass Spectrometry for Identification of Rapeseed Oil Quality Indicators
PublicationThe change of concentration of various volatiles generated during frying may be an indicator of oil quality. Chemical compounds such as aldehydes, ketones, alcohols and carboxyl acids are the products of oxidation during thermal degradation of edible oils. Shown in this work is a complementary use of GC×GC-TOFMS and PTR-MS for the detection and determination of quality indicators of rapeseed oil. The former technique was used for...
-
UV-induced electron transfer between triethylamine and 5-bromo-2′-deoxyuridine. A puzzle concerning the photochemical debromination of labeled DNA
Publication5-Bromo-2'-deoxyuridine (BrdU) photosensitizes DNA to strand break formation. However, this type of photodamage is completely quenched by the presence of triethylamine (TEA) which originates from RP-HPLC purification commonly employed by oligonucleotide providers. While the presence of TEA in oligonucleotide samples does not interfere with PCR or other molecular biology applications, the mechanism of photochemical reaction proceeding...
-
Assessment of the impact of jet impingement technique on the energy efficiency of air-cooled BIPV/T roof tile
PublicationThe paper concerns a numerical analysis of cooling of the hybrid photovoltaic (PV) modules dedicated to Building-Integrated Photovoltaic/Thermal (BIPV/T) systems. Attention was focused on the photovoltaic roof tiles, using a jet impingement technique, in which the intensification of heat transfer is ensured by streams of air hitting the heat exchange partition. A series of numerical simulations were carried out to assess an influence...
-
System transferu i komercjalizacji wiedzy w polsce - siły motoryczne i bariery
PublicationOkreślono siły motoryczne i bariery transferu technologii i komercjalizacji wyników badań w Polsce. Wypracowano listę cech odddziaływujących na system transferu technologii, które uporządkowano w cztery grupy, jako strukturalne, systemowe, świadomościowo-kulturowe oraz kompetencyjne. Opracowanie jest punktem wyjścia do rekomendacji zmian w polskim systemie transferu technologii i komercjalizacji wiedzy.
-
Natural convection in symmetrically heated vertical channels
PublicationThe study describes natural convection through a vertical channel, open on four sides and bound by two isothermal walls. Both balancing and infrared experimental investigations were performed in air (Pr = 0.71) to estimate the impact of channel width s and wall-to-ambient temperature difference (tw - t∞) on natural convective heat transfer, the formation of air flow patterns and the rate of flow pattern formation. The study was...
-
Enterotoxigenic Potential of Coagulase-Negative Staphylococci from Ready-to-Eat Food
Publication -
Improved top hat and ushaped resistors for huigh precision laser trimming.
PublicationPrzedstawiono nowe podejście do poprawy charakterystyk strojenia rezystorów warstwowych typu ''kapelusza'' i typu ''U'' z cięciem prostym pośrodku struktury polegająca na wprowadzeniu zaworki przewodzącej w górnej części rezystora. Umożliwia to eliminację lokalnych przegrzewów oraz zwiększenia dokładności strojenia i wzrostu stabilności.
-
Poultry meat freshness evaluation using electronic nose technology and ultra-fast gas chromatography
PublicationTo ensure that chicken meat products are safe to consume, it is important to be able to reliably determine its shelf-life. To assess the applicability of ultra-fast gas chromatography and electronic nose technology in evaluation of poultry, an analysis of the headspace of ground chicken meat samples refrigerated over a period of 7 days was performed. Chemometric techniques were used to mine additional information from a multiparametric...
-
Visualization of short-term heart period variability with network tools as a method for quantifying autonomic drive
PublicationWe argue that network methods are successful in detecting nonlinear properties in the dynamics of autonomic nocturnal regulation in short-term variability. Two modes of visualization of networks constructed from RR-increments are proposed. The first is based on the handling of a state space. The state space of RR-increments can be modified by a bin size used to code a signal and by the role of a given vertex as the representation...
-
Integrative multiomics study for validation of mechanisms in radiation-induced ischemic heart disease in Mayak workers
Publication -
PARTIAL WHEAT FLOUR REPLACEMENT WITH GLUTEN-FREE FLOURS IN BREAD - QUALITY, TEXTURE AND ANTIOXIDANT ACTIVITY
Publication -
Hydrothermal modification of wheat starch part 1. Effect of particle size on the viscosity of formed pastes
Publication -
Hydrothermal modification of wheat starch. Part 2. Thermal characteristics of pasting and rheological properties of pastes
Publication -
Molecular mechanism(s) of regulation(s) of c-MET/HGF signaling in head and neck cancer
Publication -
Cognition and Frailty in Patients With Heart Failure: A Systematic Review of the Association Between Frailty and Cognitive Impairment
Publication -
EP-1817: Radiotherapy-related changes in serum proteome patterns of head and neck cancer patients
Publication -
Synthesis, biological activity and conformational analysis of head-to-tail cyclic analogues of LL37 and histatin 5
Publication -
Comparison of Antioxidant Activity of Protein Isolates Derived from Selected Dry-Cured Meat Products
Publication -
Potential of bacteriocins from lab to improve microbial quality of dry-cured and fermented meat products
Publication -
Alkyl Monolayers on Silica Surfaces Prepared Using Neat, Heated Dimethylmonochlorosilanes with Low Vapor Pressures
Publication -
Heavy Metals and Metalloids Leachability from Composite Ground Materials Peat – Fly Ash – Lime
Publication -
Wheat bread enriched with raspberry and strawberry oilcakes: effects on proximate composition, texture and water properties
Publication -
A Fast Method of Separation of the Noisy Background from the Head-Cross Section in the Sequence of MRI Scans
PublicationThe paper presents a new method of removing the noisy background from the sequence of magnetic resonance imaging (MRl) scans. The sequence of scans is required in order to monitor a passage of a contrast agent through the brain tissue. The scans contain the noisy head-cross data and also the noisy background data. The latter has to be removed and excluded from a further analysis. It is achieved by applying some basic morphological...
-
Exploring the Solubility Limits of Edaravone in Neat Solvents and Binary Mixtures: Experimental and Machine Learning Study
PublicationThis study explores the edaravone solubility space encompassing both neat and binary dissolution media. Efforts were made to reveal the inherent concentration limits of common pure and mixed solvents. For this purpose, the published solubility data of the title drug were scrupulously inspected and cured, which made the dataset consistent and coherent. However, the lack of some important types of solvents in the collection called...
-
Silicon nanoparticles enhanced the growth and reduced the cadmium accumulation in grains of wheat (Triticum aestivum L.)
Publication -
Prevention of heart failure mortality and hospitalizations in SPRINT, EMPA-REG, ALLHAT and HYVET: are diuretics the clue?
Publication -
Angiotensin receptor - neprilysin inhibiton (ARNI) – A novel therapeutic concept for management of hypertension and heart failure
Publication -
The reaction heats and PM5 semiempirical studies of complexes formed between silicon podand and monovalent cations
Publication -
Testing heart rate asymmetry in long, nonstationary 24 hour RR-interval time series
Publication -
Asymmetric Properties of the Heart Rate Microstructure in Healthy Adults during 48 h ECG Recordings
Publication -
Diamond protection for reusable ZnO coated fiber-optic measurement head in optoelectrochemical investigation of bisphenol A
PublicationDue to the global problem with plastic contaminating the environment, with bisphenol A (BPA) being one of the highest demand, effective monitoring and purification of the pollutants are required. The electrochemical methods constitute a good solution but, due to polymerization of electrochemical oxidation bisphenol A products and their adsorption to the surfaces, measurement head elements are clogged by the formed film. In this...
-
Impact of Propeller Emergence on Hull, Propeller, Engine, and Fuel Consumption Performance in Regular Head Waves
PublicationIn this study, the impact of propeller emergence on the performance of a ship (speed), propeller (thrust, torque, and RPM), a diesel engine (torque and RPM) and fuel consumption are analysed under severe sea conditions. The goal is to describe the variation in the system variables and fuel consumption rather than analysing the motion of the ship or the phenomenon of propeller ventilation in itself. A mathematical model of the...
-
Experimental and analytical analysis of punching shear in flat slabs supported on column topped with concrete head
PublicationAn experimental laboraatory test of the two series of slab-column elements topped with drop panels of varying sizes is described in this paper. The scope of the paper is to investigate the influence of the drop panel size and stiffness on the behaviour of the connection between the flat slab and the column topped by the concrete head. The impact of the head size and stiffness is analysed analytically and experimentally. The experimental...
-
Measures of Heart Rate Variability in 24-h ECGs Depend on Age but Not Gender of Healthy Children
Publication -
The reaction heats and PM5 semiempirical studies of complexes formed between silicon podand and Li+ cations
Publication -
High-performance polylactic acid compressed strawboard using pre-treated and functionalised wheat straw
Publication -
Effect of Sieve Drum Inclination Angle on Wheat Grain Cleaning in a Novel Rotary Cleaning Device
Publication -
Global wealth disparities drive adherence to COVID-safe pathways in head and neck cancer surgery
Publication -
Using Wearable Electronics to Estimate Usefulness of Heart Rate Variability for Bathing Person Identif Cation
PublicationIn this paper the possibility of person identification based on biosignal is investigated. The work focus on the analysis of the changes in intervals between successive R-waves of electrocardiogram (ECG) recorded by wearable electronics in form of a necklaces. The main idea behind this project is to find efficient tool which may prevent sudden consciousness loss episodes or even sudden death episodes related to rapid temperature...
-
Study on a polish peat bog “Rucianka” as a source of yeast strains capable of effective phenol biodegradation
PublicationPhenol is one of the most widely distributed environmental pollutants which can be found in wastewaters and industrial effluents. Due to its toxicity and resistance to self-degradation, it could become even lethal for humans and animals. The treatment of this toxic compound is focused on psychical–chemical methods, although biological treatment of phenol is preferable for economic aspects related to relatively...
-
Abuse or contamination? Ratio determination of clenbuterol enantiomers to distinguish between doping use and meat contamination
PublicationClenbuterol has been detected in urine of several athletes during routine doping control in the past years. Athletes claimed that the clenbuterol was ingested by eating contaminated meat. Providing analytical prove for this claim is difficult. clenbuterol consists of two enantiomers, R(-) and S(+)-clenbuterol. Currently available human and veterinary preparations were found to consist of a racemic mixture of both enantiomers. When...