Wyniki wyszukiwania - Biblioteka Nauki

1

Removal of NO by aqueous mixed solution of ferrous chelate and sulfite with added hydrazine. Communicate.

100%

Suchecki T. T. , Kumazawa H.

|

1998

|

tom Vol. 24, no. 2

141-149

EN

Simultaneously to absorption of NO in the aqueous solution of FeIIEDTA and Na2SO3, the F2+ ions coordinated to EDTA are oxidized to the Fe3+ ones. But FeIIIEDTA complex has no ability to bind NO and a regeneration of the absorption solution is needed. Effects of inlet NO gas concentrations, initial pHs of the absorbent, initial FeIIEDTA concentrations, on the time dependencies of the degree of NO removal and FeIIEDTA concentration were investigated by absorption of NO into a batch of the title solution.

PL

Równocześnie z adsorpcją NO w wodnym roztworze FeIIDTA i Na2SO3 jony Fe2+ skoordynowane z EDTA są utleniane do postaci Fe3+. Kompleks FeIIIEDTA nie posiada jednak własności przyłączania NO i dlatego regeneracja roztworu absorpcyjnego jest niezbędna. Badano wpływ - stężenia wlotowego NO, początkowego pH roztworu absorpcyjnego oraz początkowego stężenia FeIIEDTA - na: przebiegi czasowe sprawności usuwania NO oraz stężenia jonów żelaza (II) w czasie absorpcji NO w tytułowych roztworach w układzie okresowym.

2

Postponed absorption of dabigatran in a patient with paralytic ileus – difficulties in decision making on reversal agent (idarucizumab) use

100%

Tomaszuk-Kazberuk A. , Łopatowska P. , Młodawska E. , Klaja B. , Ausztol P. , Korbel B. , Sobkowicz B.

European Journal of Translational and Clinical Medicine

|

2019

|

tom 2

|

nr 1

44-47

EN

According to the European Society of Cardiology (ESC) guidelines, non-vitamin K antagonist oral anticoagulants (NOACs) are first choice drugs in prevention of thromboembolic events among patients with atrial fibrillation (AF). According to our knowledge this was the only case of delayed absorption of dabigatran due to ileus. A 79-year-old woman with hypertension and a 1-year history of persistent AF treated with dabigatran (a direct thrombin inhibitor approved for the prevention of stroke in patients with non-valvular AF) 110 mg bid for two weeks. She was hospitalized due to acute abdominal pain, vomiting and diarrhea. Signs of acute embolism of abdominal aorta (paraparesis) were confirmed on contrast-enhanced computed tomography scan and she was qualified for emergency surgery. The use of idarucizumab, the specific reversal agent for dabigatran, was considered twice. This case shows that exposure to dabigatran may occur later in patient with acute ileus due to alterations in absorption than it can be expected in normal situation. Such patients should be carefully monitored for a significant rebound in anticoagulant activity.

3

Absorpcja RPO WP przez jednostki samorządu terytorialnego regionu Podkarpacia

100%

Gajdowska M.

Przedsiębiorstwo i Region

|

2011

|

nr 3

38-47

EN

The artiscle shows the level of the absorption of European centres through individual communes in the podkarpackie province, with one of poorest regions the EU, is an important component enabling panes and the sustainable development and reducing developmental disproportions between individual regions. Unfortunately many elements affect the level of this absorption from nearer and further surrounding self-government units in it above all administrative and financial possibilities of individual communes and cities.

4

Single dose of green tea extract decreases lipid digestion and absorption from a test meal in humans

100%

Walkowiak J. , Bajerska J. , Kargulewicz A. , Lisowska A. , Siedlerski G. , Szczapa T. , Kobelska-Dubiel N. , Grzymisławski M.

Acta Biochimica Polonica

|

2013

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tom 60

|

nr 3

481-483

EN

Background & Aims: Green tea is known worldwide for its high content of polyphenolic compounds and multifactorial beneficial effects on human health. The role of green tea as an inhibitor of lipid hydrolysis is widely discussed. The aim of the study was to assess the influence of green tea extract on lipid digestion and absorption. Methods: The study comprised 32 healthy volunteers aged 23 to 30 years with normal exocrine pancreatic function. In all subjects 13C-labelled mixed triglyceride breath test was performed twice with and without green tea extract ingestion. Cumulative percentage dose recovery was considered to reflect digestion and absorption of lipids. Values are expressed as medians and 1st-3rd quartile distribution. Results: In all subjects, cumulative percentage dose recovery values were normal in a placebo test (36.8% <30.1-43.3%>). These results were significantly higher (p=0.021) than those obtained in green tea extract test (28.8% <23.1-37.2%>). Results of six tests with GTE were abnormal. Conclusions: Single dose of green tea extract taken with a test meal decreases lipid digestion and absorption in humans.

5

ADSORPTION STUDIES OF KETOCONAZOLE WITH CHITOSAN

100%

Meler J. , Szcześniak M. , Pluta J. , Grimling B.

Progress on Chemistry and Application of Chitin and its Derivatives

|

2014

|

tom 19

111-117

EN

Combinations of polymers and biopolymers of biologically active compounds in the last period have been the subject of intensive research. The active substance linked to a polymer often has a modified function and sometimes no action. On the other hand, the use of unsuitable polymers may result in a type of mismatch of drug-polymer. The aim of the study was to examine whether the active substance ketoconazole causes incompatibility with dietary supplements containing chitosan. Antifungal drug adsorption phenomenon was investigated by the static method in the concentration range of the single dose using a pharmaceutical model of the gastrointestinal tract. The test results show that the antifungal agent is adsorbed onto the chitosan in the pH ranges used, and the binding ability of the chitosan depends on the variety, or indirectly from the reaction environment. It was observed that the average sorption, depending on the variety of chitosan, was located in the limit from 94% to 100%. The increase of the size of the adsorption of anti-inflammatory drugs on the polymer with increasing pH from 7.6 to 8.0 can be explained by the swelling properties of chitosan, which grow with increasing pH of the environment in the direction of alkaline pH. Thus, the specific surface area and polymer sorption capacity is increased. Based on the above considerations, it can be concluded that, between the test drug and the polymer, there is antagonistic interaction involving the adsorption of the drug of this group on a polymer which is chitosan.

6

Deactivation rate of camptothecin determined by factor analysis of steady-state fluorescence and absorption spectra

100%

Ziomkowska B. , Kruszewski S. , Siuda R. , Cyrankiewicz M.

|

2006

|

tom Vol. 36, nr 1

137-146

EN

Camptothecin is a fluorescent compound exhibiting strong anticancer properties. A serious limitation to clinical application of this compound is its hydrolysis, when biologically active lactone form converts into inactive carboxylate. There are some differences in the shapes of both fluorescence and absorption spectra of the lactone and carboxylate forms of camptothecin. Therefore, during hydrolysis resultant fluorescence and absorption spectra evolve. Factor analysis of fluorescence/absorption spectra recorded during the hydrolysis process of camptothecin enables one to determine the temporary concentration of the lactone and carboxylate forms and obtain the deactivation rate of this compound.

7

Pilot-scale studies on NOx removal from flue gas via NO ozonation and absorption into NaOH solution

100%

Jakubiak M. P. , Kordylewski

Chemical and Process Engineering

|

2012

|

tom 33

|

nr 3

345-358

EN

The paper presents results of experimental studies on removal of NOx from flue gas via NO ozonation and wet scrubbing of products of NO oxidation in NaOH solutions. The experiment was conducted in a pilot plant installation supplied with flue gas from a coal-fired boiler at the flow rate 200 m3/h. The initial mole fraction of NOx,ref in flue gas was approx. 220 ppm, the molar ratio X = O3/NOref varied between 0 and 2.5. Ozone (O3 content 1÷5% in oxygen) was injected into the flue gas channel before the wet scrubber. The effect of the mole ratio X, the NaOH concentration in the absorbent, the liquid-to-gas ratio (L/G) and the initial NOx concentration on the efficiency of NOx removal was examined. Two domains of the molar ratio X were distinguished in which denitrification was governed by different mechanisms: for X ≤ 1.0 oxidation of NO to NO2 predominates with slow absorption of NO2, for X >> 1.0 NO2 undergoes further oxidation to higher oxides being efficiently absorbed in the scrubber. At the stoichiometric conditions (X = 1) the effectiveness of NO oxidation was better than 90%. However, the effectiveness of NOx removal reached only 25%. When ozonation was intensified (X ≥ 2.25) about 95% of NOx was removed from flue gas. The concentration of sodium hydroxide in the aqueous solution and the liquid-to-gas ratio in the absorber had little effect on the effectiveness of NOx removal for X > 2.

8

Dynamical and Steady State Processes of Probe Absorption-Dispersion in a Four-Level Quantum Dot Nanostructure

100%

Asadi Amirabadi E. , Jamshidnejad M. , Miraboutalebi S. , Asadpour S.

Acta Physica Polonica A

|

2017

|

tom 131

|

nr 6

1460-1465

EN

In this paper, we investigated the transient electron population and the transient behaviour of the dispersion, absorption and refractive property of weak probe light in a four-level InGaN/GaN quantum dot nanostructure. In order to achieve the wave functions and their corresponding energy levels of the mentioned quantum dot nanostructure, the Schrödinger and Poisson equations is solved selfconsistently for carriers (here electron) in quantum dot. Our findings show that the properties of transient processes can be dramatically affected by parameters such as intensity, detuning and relative phase of applied fields. Our proposed scheme provides a realistic model for transient control of refraction index properties in a quantum dot nanostructure. These results may have potential applications in high speed optical switch for quantum information technologies.

9

Absorption of nitrogen oxides at the final stage of ammonium nitrite production

100%

Głowiński J. , Biskupski A. , Słonka T. , Tylus W.

|

2009

|

tom Vol. 30, z. 2

217-229

EN

A model has been constructed, which describes the absorption of nitrogen oxides in an alkaline solution, and simulation was conducted to visualize the removal of nitrogen oxides from a gas of a low NOx concentration at a varying ratio of nitrogen dioxide to nitrogen oxide. When the concentration of nitrogen oxide in the gas declines to a low level and the reaction with oxygen occurs at a very slow rate, then it is desirable to add nitrogen dioxide into the reacting mixture. The substantially faster reaction of the two oxides, NO and NO2, leads to the formation of the reactive acid anhydride N2O3, which is absorbed in an alkaline solution.

PL

Opracowano model absorpcji tlenków azotu w roztworze alkalicznym i przeprowadzono symulację procesu ich wymywania z gazu o małym stężeniu NOx, dla różnych stosunków molowych dwutlenku i tlenku azotu. Wykazano, że gdy stężenie NO w gazie staje się niewielkie, celowe jest wprowadzenie dwutlenku azotu do mieszaniny reagujących gazów. Tworzy się wówczas bezwodnik kwasu na trzecim stopniu utlenienia, trójtlenek dwuazotu, pochłaniany w roztworze alkalicznym.

10

Postponed absorption of dabigatran in a patient with paralytic ileus – difficulties in decision making on reversal agent (idarucizumab) use

100%

Tomaszuk-Kazberuk A. , Łopatowska P. , Młodawska E. , Klaja B. , Ausztol P. , Korbel B. , Sobkowicz B.

European Journal of Translational and Clinical Medicine

|

2019

|

tom 2

|

nr 1

44-47

EN

According to the European Society of Cardiology (ESC) guidelines, non-vitamin K antagonist oral anticoagulants (NOACs) are first choice drugs in prevention of thromboembolic events among patients with atrial fibrillation (AF). According to our knowledge this was the only case of delayed absorption of dabigatran due to ileus. A 79-year-old woman with hypertension and a 1-year history of persistent AF treated with dabigatran (a direct thrombin inhibitor approved for the prevention of stroke in patients with non-valvular AF) 110 mg bid for two weeks. She was hospitalized due to acute abdominal pain, vomiting and diarrhea. Signs of acute embolism of abdominal aorta (paraparesis) were confirmed on contrast-enhanced computed tomography scan and she was qualified for emergency surgery. The use of idarucizumab, the specific reversal agent for dabigatran, was considered twice. This case shows that exposure to dabigatran may occur later in patient with acute ileus due to alterations in absorption than it can be expected in normal situation. Such patients should be carefully monitored for a significant rebound in anticoagulant activity.

11

Spectroscopic properties of the Pr3+ ion in TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3 glasses

88%

Burtan B. , Sitarz M. , Lisiecki R. , Ryba-Romanowski W. , Jeleń P. , Cisowski J. , Reben M.

Open Physics

|

2014

|

tom 12

|

nr 1

57-62

EN

The goal of this work was to investigate the spectroscopic properties of Pr3+ ions, embedded in two different tellurite glass matrices, TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3. The absorption and fluorescence spectra have been recorded and analyzed in terms of the Judd-Ofelt theory along with the luminescence decay of the 3P0 and 1D2 levels of the Pr3+ ion. The spectroscopic studies were completed with ellipsometric measurements providing the dispersion relation of the refractive index of the investigated glasses.

12

Optical, structural and electrical properties of pure and urea doped KDP crystals

88%

Babu B. , Chandrasekaran J. , Balaprabhakaran S. , Ilayabarathi P.

Materials Science Poland

|

2013

|

tom Vol. 31, No. 1

151-157

EN

Single crystals of good optical quality, made of potassium dihydrogen phosphate (KDP) doped with urea were grown by slow evaporation solution growth technique at a constant temperature of 35 C. Optical absorption and dielectric properties were studied for pure and urea doped KDP crystals. Using powder XRD studies, crystalline nature of pure and urea doped KDP crystals was confirmed. AC conductivity was measured for the grown crystals. DC electrical conductivity and photoconductivity studies were carried out for pure and urea doped KDP crystals and the differences caused by the dopant were also discussed.

13

Assessment of radiant flux absorption by irradiated phase on the kinetics of photocatalytic reactions

88%

Adamek E. , Ziemiańska J. , Lipska L. , Makowski A. , Sobczak A. , Baran W.

|

2010

|

tom Vol. 45

5-14

EN

In this study, the kinetics equation describing heterogeneous photocatalytic process in relation with the absorption of radiation by inactive photochemically reagents was presented. The proposed expression was verified based on the results of degradation process of selected azo-dyes. The experiments were carried out in one- and two component solutions in the presence of TiO2 (anatase) during UV-a irradiation.

14

On the modification of methods of nuclear chronometry in astrophysics and geophysics

88%

Olkhovsky V. , Dolinska M.

Open Physics

|

2010

|

tom 8

|

nr 1

95-100

EN

In practically all known methods of nuclear chronometry until now, research has usually taken into account the life-times of only the fundamental states of α-radioactive nuclei. But in the processes of nuclear synthesis in stars and under the influence of constant cosmic radiation on the surfaces of planets the excitations of the α-radioactive nuclei are still ongoing. Between these processes there are states with excited α-particles inside the parent nuclei leading to much smaller life-times. And inside the large masses of stellar, terrestrial and meteoric substances there are transitions between different internal conditions of radioactive nuclei that are accompanied by infinite chains of γ-radiations with subsequent γ-absorptions, further γ-radiations, etc. For a description of the α-decay evolution that accounts for such excited states and multiple γ-radiations and γ-absorptions inside stars, and under the influence of cosmic radiation on the Earth’s surface we present a quantum-mechanical approach, which is based on the generalized Krylov-Fock theorem. A few simple estimations are also presented. These approaches lead to the conclusion that the usual (non-corrected) “nuclear clocks” do really point not to realistic values but to the upper limits of the durations of α-decay in stellar and planet processes.

15

On investigation of "KAMAXIL" silicon elastomer rheological properties

88%

Kopecki H. , Majcherczyk H.

|

1999

|

tom Vol. 4, no spec.

51-56

EN

The methods of determination of silicone elastomer KAMAXIL rheological properties and suggestions on it application in checking of quality is presented in the paper.

16

Właściwości optyczne tkanek możliwości diagnostyczne

88%

Nowak M. , Rutowski R. , Wyrostek A. , Łukowiak E.

Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna

|

1998

|

tom Vol. 4, nr 1

11-18

PL

W pracy omówiono właściwości optyczne tkanek. Przedstawiono wyniki badań absorpcyjnych świeżych tkanek pobranych śródoperacyjnie.

EN

In the presented paper the optical characteristics of tissues are discussed. The results of absorption measurements of the fresh tissue taken during the operation are presented.

17

Carbon Dioxide Absorption into Aqueous Blends of N-Methyldiethanolamine and 2-Ethylaminoethanol

88%

Moniuk W. , Pohorecki R. , Machniewski P.

Chemical and Process Engineering

|

2012

|

tom 33

|

nr 4

547-561

EN

Measurements of the absorption rate of carbon dioxide into aqueous solutions of N-methyldiethanoloamine (MDEA) and 2-ethylaminoethanol (EAE) have been carried out. On this basis a mathematical model of the performance of an absorption column operated with aqueous solution of a blend of the above amines at elevated temperatures and pressures have been proposed. The results of simulations obtained by means of this model are described. The work is a part of a wider program, aimed at the development of a new process.

18

Pomiar absorpcji materiałów pochłaniających fale elektromagnetyczne

75%

Piwowarczyk K. , Przesmycki R. , Nowosielski L. , Bugaj M.

|

2012

|

tom R. 88, nr 2

33-35

PL

W referacie przedstawiono metodologię pomiarów absorpcji fal elektromagnetycznych oraz opis stanowiska do pomiaru charakterystyk absorpcji badanych. Zamieszczono również wyniki przeprowadzonych pomiarów dla płyty metalowej z naniesionymi przykładowymi materiałami absorpcyjnymi.

EN

The aim of this work is to present the procedure for absorption measurements of absorbing materials. In presented procedure as the electromagnetic wave absorption measure was used the signal levels difference between probe signal level reflected from the reflector material not covered and covered by the absorbing material.

19

Wpływ siły tłumienia amortyzatora na obciążenia dynamiczne kół i wyniki badań kontrolnych zawieszenia metodami drgań wymuszonych

75%

Kupiec J. , Śląski G.

|

2009

|

tom nr 6

CD-CD

PL

Badanie amortyzatorów w ramach badań kontrolnych stanu technicznego samochodów daje wynik wyrażony w procentach. Jest on często błędnie odbierany jako wynik procentowego stanu sprawności amortyzatora. Z punktu widzenia bezpieczeństwa jazdy zagadnienie oceny pracy zawieszenia pod kątem jakości tłumienia sprowadza się w praktyce do określenia wpływu tłumienia w zawieszeniu na wielkość amplitud obciążeń dynamicznych kół. Autorzy przedstawili analizę teoretyczną tej zależności oraz wyniki praktycznych badań laboratoryjnych wykonanych z użyciem kilku amortyzatorów o róSnym stanie technicznym, dla których wykonano badania ich charakterystyki tłumienia w stanie wymontowanym oraz badania kontrolne na stanowisku do badania stanu zawieszenia z amortyzatorami zamontowanymi w samochodzie. W podsumowaniu przedstawiono wnioski dotyczące uzyskanych wyników badań laboratoryjnych wraz z odniesieniem do wyników analizy teoretycznej oraz pewnej niepewność dotyczącej interpretacji wyników badań na różnych urządzeniach.

EN

Testing shock absorbers during technical inspections gives results presented in percent. It is often thought to be percent of level of the shock absorber effectiveness. To make the evaluation of safety it is important to find the influence of suspension damping on amplitudes of vertical contact force between tire and road. The authors presented some theoretical analysis and results of practical laboratory tests of some shock absorbers in different condition. There were made tests of damping force for shock absorbers removed from car and tests with use of suspension and shock absorbers testers employing resonance principle. At the end conclusions are presented concerning theoretical analysis and practical tests and some of uncertainty how to interpret the test results with use of various testers.

20

Validation of empirical and semi-analytical remote sensing algorithms for estimating absorption by Coloured Dissolved Organic Matter in the Baltic Sea from SeaWiFS and MODIS imagery

75%

Kowalczuk P. , Darecki M. , Zabłocka M. , Górecka I.

|

2010

|

tom No. 52 (2)

171-196

EN

An extensive bio-optical data set obtained from field measurements was used to evaluate the performance of an empirical (Kowalczuk et al. 2005) and two semi-analytical algorithms: Carder et al. (1999) and GSM01 (Maritorena et al. 2002) for estimating CDOM absorption in the Baltic Sea. The data set includes coincident measurements of radiometric quantities and absorption coefficients of CDOM made during 43 cruises between 2000 and 2008. In the first stage of the analysis, the accuracy of the empirical algorithm by Kowalczuk et al. (2005) was assessed using in situ measurements of remote sensing reflectance. Validation results improved when matching points located in Gulf of Gdańsk close to the Vistula River mouth were eliminated from the data set. The calculated errors in the estimation of aCDOM(400) in the first phase of the analysis were Bias = -0.02, RMSE = 0.46 and R2 = 0.70. In the second stage, the empirical algorithm was tested on satellite data from SeaWiFS and MODIS imagery. The satellite data were corrected atmospherically with the MUMM algorithm designed for turbid coastal and inland waters and implemented in the SeaDAS software. The results of the best case scenario for estimating the CDOM absorption coefficient aCDOM(400), based on SeaWiFS data, were Bias = -0.02, RMSE = 0.23 and R2 = 0.40. The validation of the Kowalczuk et al. (2005) empirical algorithm applied to MODIS data led to a less accurate estimate of aCDOM(400): Bias = -0.03, RMSE = 0.19 and R2 = 0.29. This assessment of the accuracy of standard semi-analytical algorithms available in the SeaWiFS and MODIS imagery processing software revealed that both algorithms (GSM_01 and Carder) underestimate CDOM absorption in the Baltic Sea with mean systematic and random errors in excess of 70%. The paper presents examples of the application of the Kowalczuk et al. (2005) empirical algorithm for producing maps of the seasonal distribution of aCDOM(400) in the Baltic Sea between 2004 and 2008.