Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Krawczyk, A." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 86
Tytuł:
Enhanced isoflavones accumulation in methyl jasmonate-treated in vitro cultures of kudzu [Pueraria lobata Ohwi]
Zwiekszanie akumulacji izoflawonow w kulturze in vitro kudzu [Pueraria lobata Ohwi] pod wplywem jasmonianu metylu
Autorzy:
Thiem, B
Krawczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/72016.pdf
Data publikacji:
2010
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Opis:
Kudzu, Pueraria lobata (Willd.) Ohwi (Fabaceae) is a woody climber plant that naturally grows in tropical and subtropical East Asia, where the species is highly valued for its medicinal properties. Methyl jasmonate (MJ) stimulated isoflavones accumulation in Pueraria lobata whole plant cultures in vitro after 7 days of elicitation. Isoflavonoid content increased by the addition of 50, 100 and 200 μM of MJ. However, the plantlets growth was inhibited by increasing of MJ concentration. The elicitor (100 μM) enhanced total isoflavones production in plantlets of P. lobata to 10.44 mg/g dry wt. Moreover, MJ stimulated accumulation of daidzein and genistein. It was found that the total content of isoflavones increased in comparison with that found in the control plantlets, while content of genistein was 4–fold higher than control plants but the content of daidzein increased from undetectable level up to 0.54 mg.g-1 dry mass. The study shows that the content of active compounds in whole plant cultures of P. lobata may be enhanced by elicitation with MJ.
Kudzu Pueraria lobata (Willd.) Ohwi (Fabaceae) jest wartościową rośliną leczniczą, pnączem rosnącym dziko w tropikalnych i subtropikalnych rejonach Azji, gdzie gatunek jest wysoko ceniony z uwagi na właściwości lecznicze. Jasmonian metylu (MJ) zwiększał akumulację izoflawonów w kulturze in vitro P. lobata po 7 dniach elicytacji. Zawartość izoflawonoidów wzrosła po dodaniu MJ w stężeniu 50, 100 i 200 μM. Natomiast wzrost roślinek był hamowany wraz ze wzrostem stężenia elicytora. MJ (100 μM) zwiększył produkcję izoflawonów w zregenerowanych roślinkach P. lobata do 10,44 mg/g s.m Ponadto MJ stymulował produkcję daidzeiny i genisteiny. Stwierdzono, że całkowita zawartość izoflawonów wzrosła w porównaniu z ilością tych związków w roślinkach kontrolnych, podczas gdy zawartość genisteiny powiększyła się 4-krotnie, a daidzeina wzrosła z poziomu niewykrywalnego do 0.54 mg.g-1 suchej masy. Badania wskazują na możliwość zwiększania zawartości aktywnych związków w kulturze in vitro całych roślinek P. lobata w procesie elicytacji jasmonianem metylu.
Źródło:
Herba Polonica; 2010, 56, 1; 48-56
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Rough Estimation of Acoustics of the Cuboidal Room with Impedance Walls
Autorzy:
Kocan-Krawczyk, A.
Brański, A.
Powiązania:
https://bibliotekanauki.pl/articles/177714.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Fourier analysis
room acoustics
absorption coefficient
boundary-value problem
impedance boundary conditions
Opis:
The cuboidal room acoustics field is modelled with the Fourier method. A combination of uniform, impedance boundary conditions imposed on walls is assumed, and they are expressed by absorption coefficient values. The absorption coefficient, in the full range of its values in the discrete form, is considered. With above assumptions, the formula for a rough estimation of the cuboidal room acoustics is derived. This approximate formula expresses the mean sound pressure level as a function of the absorption coefficient, frequency, and volume of the room separately. It is derived based on the least-squares approximation theory and it is a novelty in the cuboidal room acoustics. Theoretical considerations are illustrated via numerical calculations performed for the 3D acoustic problem. Quantitative results received with the help of the approximate formula may be a point of reference to the numerical calculations.
Źródło:
Archives of Acoustics; 2018, 43, 2; 227-233
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing the randomness of lithostratigraphic successions with the Markov Chain methods
Autorzy:
Doktor, M.
Krawczyk, A.
Mastej, W.
Powiązania:
https://bibliotekanauki.pl/articles/191918.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Markov chain methods
Monte Carlo methods
coal-bearing successions
Opis:
The crucial role in the studies on layer successions in lithostratigraphic sections with the application of stochastic model of depositional processes represented by the Markov chain is played by correct estimation of the matrix of transition numbers between lithofacies expected in a random sequence. Methods known from the literature are iteration procedures, which do not ensure quick, general solution. Hence, we propose a universal method based upon the Monte Carlo simulation technique. This method enables the researcher to estimate precisely and reliably the expected matrix of facies transitions.
Źródło:
Annales Societatis Geologorum Poloniae; 2010, 80, No 2; 163-166
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Influence of the Wall Acoustic Impedance on the Room Acoustics. The Exact Solution
Autorzy:
Brański, A.
Kocan-Krawczyk, A.
Prędka, E.
Powiązania:
https://bibliotekanauki.pl/articles/177084.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Fourier analysis
architectural acoustics
absorption coefficients
boundary-value problems
Opis:
The Fourier method is applied to the description of the room acoustics field with the combination of uniform impedance boundary conditions imposed on some walls. These acoustic boundary conditions are expressed by absorption coefficient values In this problem, the Fourier method is derived as the combination of three one-dimensional Sturm-Liouville (S-L) problems with Robin-Robin boundary conditions at the first and second dimension and Robin-Neumann ones at the third dimension. The Fourier method requires an evaluation of eigenvalues and eigenfunctions of the Helmholtz equation, via the solution of the eigenvalue equation, in all directions. The graphic-analytical method is adopted to solve it It is assumed that the acoustic force constitutes a monopole source and finally the forced acoustic field is calculated. As a novelty, it is demonstrated that the Fourier method provides a useful and efficient approach for a room acoustics with different values of wall impedances. Theoretical considerations are illustrated for rectangular cross-section of the room with particular ratio. Results obtained in the paper will be a point of reference to the numerical calculations.
Źródło:
Archives of Acoustics; 2017, 42, 4; 677-687
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implantable Cardiac Rhythm Device at Workplace Electromagnetic Environment
Implanty regulujące rytm pracy serca w polu elektromagnetycznym wytwarzanym na stanowiskach pracy
Autorzy:
Pławiak-Mowna, A.
Krawczyk, A.
Miaskowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/152854.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
stymulatory serca
wszczepialne kardiowertery-defibrylatory
napięcie indukowane
bezpieczeństwo w środowisku pracy
FDTD
cardiac pacemakers
implantable cardioverter-defibrillators
interface voltage
safety at workplace
Opis:
The paper presents problems of exposing cardiac pacemaker (CPM) and implantable cardioverter defibrillator (ICD) to electromagnetic field. The authors have focused on work environment EMF source - RF dielectric heaters. To investigate if the basic restrictions were exceeded according to IEC reference levels, the interface voltage at the input port of a pacemaker in a full 3D human model and phantom was calculated. The result of calculations was analyzed.
Praca prezentuje problemy związane z ekspozycją stymulatora serca i wszczepialnych kardioweterów defibrylatorów na pole elektromagnetyczne w miejscu pracy. Jako źródło pola elektromagnetycznego w środowisku pracy przedstawiono zgrzewarki dielektyczne wysokiej częstotliwości. Przebadano poziom napięcia indukowanego na wejściu urządzenia. W badaniach symulacyjnych wykonanych z wykorzystaniem metody różnic skończonych w dziedzienie czasu (FDTD) zastosowano ograniczenia ekspozycji implantów narzucone przez międzynarodowe standardy .
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 5, 5; 93-95
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunohistochemical evaluation of hippocampal CA1 region astrocytes in 10 - day - old rats after monosodium glutamate treatment
Autorzy:
Krawczyk, A.
Jaworska-Adamu, J.
Rycerz, K.
Powiązania:
https://bibliotekanauki.pl/articles/30435.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
High concentration of glutamate (Glu) is excitotoxic for nervous system structures. This may lead to glial reactivity ie. increased expression of glial fibrillary acidic protein (GFAP) and S100β protein, and also to hypertrophy and proliferation of cells which are determined by the presence of Ki-67 antigen. The aim of the study was to analyse the immunoreactivity of the GFAP, S100β and Ki-67 proteins in astrocytes of hippocampal CA1 region in young rats after administration of monosodium glutamate (MSG) at two doses: 2 g/kg b.w. (I group) and 4 g/kg b.w. (II group). In rats from I and II group morphologically altered astrocytes with the GFAP expression were observed in the SLM of the hippocampal CA1 region. The cells had eccentrically located nuclei and on the opposite site of the nuclei there were single or double, long and weakly branched processes. Moreover, in the SLM the increase of the number of GFAP and S100β immunopositive astrocytes and nuclei with Ki-67 expression, in contrary to control individuals, was observed. These results suggest the increased expression of the proteins in early reactions or hyperplasia which, together with cell hypertrophy, indicate late reactivity of astroglia in response to glutamate noxious effect.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mediation in health services
Mediacja w służbie zdrowia
Autorzy:
Krawczyk-Kalitowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/323726.pdf
Data publikacji:
2014
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
mediation
innovation
alternative
medical error
mediacja
innowacja
alternatywa
błąd w sztuce medycznej
Opis:
The article is an attempt to emphasize a new approach to solving disputes in the field of medical services. It contains basic information on mediation and presents its beneficial effect in relations between conflicted parties. The significant attention is puton mediation’s usefulness in conflicts between a doctor and a patient, especially in cases of a so called medical error.
Artykuł jest próbą zaakcentowania nowego podejścia do rozwiązywania sporów w obszarze funkcjonowania służby zdrowia. Zawiera podstawowe informacje dotyczące mediacji i ukazuje korzystny wpływ tej metody w relacjach między skonfliktowanymi stronami. W szczególności zwrócono uwagę na przydatność oraz wykorzystanie mediacji w sporach pomiędzy lekarzem a pacjentem, zwłaszcza w przypadkach wystąpienia tak zwanego błędu w sztuce medycznej.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2014, 75; 61-69
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Does home-based vision therapy affect symptoms in young adults with convergence insufficiency?
Autorzy:
Nawrot, P.
Michalak, K. P.
Przekoracka-Krawczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/173398.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
asthenopia
convergence insufficiency
exophoria
exotropia
eyestrain
symptom survey
vision therapy
Opis:
The purpose of this study was to investigate the effectiveness of extended home-based vision therapy as a treatment for symptomatic convergence insufficiency (CI) in young exophoric adults. Twenty-four adults with symptomatic exophoria at near with convergence insufficiency were divided into an experimental and a control group. The experimental group received 24 weeks of vision training, while the control group received no therapy. The three major outcome measures were the scores on the convergence insufficiency symptom survey V15 (CISS-V15), the near point of convergence and the positive fusional vergence at near. Only subjects from the experimental group demonstrated statistically and clinically significant changes in the CISS-V15 score (improvement of 20 points), near point of convergence (improvement of 5.5 cm) and positive fusional vergence at near (improvement of 15 Δ). No significant changes of either symptoms or signs were evident for the control group. The results presented in this study showed that extending the time and number of home based therapy techniques might be an effective treatment modality in adult subjects with CI. This therapy might be an alternative way for treatment of symptomatic exophoric CI subjects, who cannot attend office sessions.
Źródło:
Optica Applicata; 2013, 43, 3; 551-566
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transcranial direct current stimulation as a new method for changing the accommodative response of the eye
Autorzy:
Wendel, M.
Burdziński, G.
Michalak, K. P.
Przekoracka-Krawczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/173903.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
transcranial direct current stimulation
tDCS
accommodative response
visual training
visual cortex
Opis:
The aim of the present study was to test if the exposure to transcranial direct current stimulation (tDCS) would change the excitability of the visual cortex and influence an accommodative response of the ocular lens. Twenty four subjects were divided into two groups: real-stimulation of the occipital cortex in which participants were exposed to real stimulation (1 mA for 12 min), and sham in which subjects were tested with placebo stimulation. The results showed that tDCS might indeed influence accommodative response. The strongest and most evident effect was observed when a 3.0 D accommodative stimulus was used: anodal tDCS increased but cathodal tDCS – decreased the accommodative response. The second finding was that the effect of stimulation was dependent on the examined eye. The right eye with slightly lower visual acuity and weaker accommodative response in pre-test, responded more strongly than the left eye. The short-time tDCS might modulate excitability of the neurons in visual cortex and eye sensitivity, reflected in the change of accommodative response. The tDCS method may be considered a technique that could reinforce conventional active visual training to improve accommodative functions.
Źródło:
Optica Applicata; 2017, 47, 4; 499-510
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunoreactivity of acetylcholinesterase and M1 muscarinic receptors in the hippocampus and striatum of rats treated with Rebaudioside A
Autorzy:
Rycerz, K.
Jaworska-Adamu, J.
Krawczyk, A.
Arciszewski, M.B.
Powiązania:
https://bibliotekanauki.pl/articles/16539186.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
rebaudioside A
stevia
acetylcholinesterase
hippocampus
striatum
rat
Opis:
Rebaudioside A (RebA) is a steviol glycoside used for production of sweeteners. It was shown that the glycosides affect memory and learning processes. The aim of the study was to investigate neurons immunoreactive for acetylcholinesterase (AChE) and M1 muscarinic receptors (mAChRs-M1) of the hippocampal CA1 and CA3 fields and striatal caudateputamen (CP) and globus pallidus (GP) in rats receiving RebA. RebA was administrated to adult rats for 45 days in dilutions of 1 mg and 2 mg RebA/ml water. Indirect peroxidase-antiperoxidase immunohistochemical reaction was conducted on frontal sections containing the hippocampus and striatum with use of antibodies against AChE and mAChRs-M1. Immunoreactive for the studied proteins neurons were morphologically and morphometrically assessed in hippocampal CA1 and CA3 fields and in CP and GP. Microscopic observations did not reveal significant changes in morphology of immunoreactive neurons, which suggests no neurotoxic effect of the studied glycoside on these cells. Morphometric analyses revealed an increase in the density of AChE and mAChRs-M1 immunoreactive neurons. A decrease in reaction intensity of AChE-positive neurons was also demonstrated in the hippocampal CA1 field and in GP. In contrast, an increase in reaction intensity of mAChRs-M1-positive neurons was found in CA1, CA3 fields and in CP and GP. The results of our preliminary studies indicate that RebA administrated to rats has an impact on cholinergic neurons in the studied area. The results suggest a possible increase in the activity of the cholinergic system, responsible for memory and learning processes, after administration of RebA.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 303-310
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Binocular summation evaluated by early and late visual evoked potentials
Autorzy:
Czaińska, M.
Przekoracka-Krawczyk, A.
Naskręcki, R.
van der Lubbe, R.
Powiązania:
https://bibliotekanauki.pl/articles/174864.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
binocular summation
binocular vision
visual evoked potentials
Opis:
The visual evoked potential technique makes it possible to explore the visual system with a high temporal resolution, thereby providing information about different phases of binocular integration. The aim of the study was to characterize the amplitude, latency and scalp distribution of pattern-reversal gratings visual evoked potentials related to binocular viewing. 12 adult participants without any pathology of the visual system were examined by electroencephalography (EEG), with three viewing conditions: the dominant eye, non-dominant eye, and both eyes. They were tested with reversed checkerboard patterns presented with a frequency of 1.02 Hz. The amplitudes of visual evoked potentials were calculated to detect the effect of binocular integration. The strongest binocular summation was observed on the N75 component. P100 component was also affected by binocular viewing, mainly above parieto-occipital cortex. In the later time window binocular summation was reflected in changes in amplitude of N145 component over the right parieto-occipital region. The obtained results suggest that binocular summation is not limited to occipital cortex as its influence was also observed above parieto-occipital regions. Changes in amplitude of N75 component looks to be a good predictor of binocular summation.
Źródło:
Optica Applicata; 2018, 48, 1; 137-148
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of historical land use changes caused by underground mining in Miedzianka town, based on a webgis tool and InSAR observations
Autorzy:
Tama, A.
Adamek, K.
Pargieła, K.
Ochałek, A.
Krawczyk, A.
Lupa, M.
Powiązania:
https://bibliotekanauki.pl/articles/104806.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
revitalization
historical mining impact
urban development
WebGIS tool
InSAR technique
Opis:
The article presents land surface changes caused by historical mining of metal ores on in the country town of Miedzianka in Lower Silesia, Poland. From the 19th until the middle of 20th century, mining in Miedzianka was in depression. Due to long-term and widespread mining activity, the town almost completely disappeared. The scale of the devastating effects of the mining appeared on the surface of the land, which led to the decision to abandon Miedzianka. Despite the damage the local authority made efforts to renew regional tourism. Unfortunately, it is impossible to carry out revitalization without recognizing the current threat of postmining excavations. Therefore, the authors focused on analyzing collected archival documentation to understand the mining processes that have occurred and may still be occurring under the surface. The archival maps presented in the article have been indicated land use changes from 1886 to 1951. The current situation display WMS layer from Geoportal website. The collected materials allowed the spatiotemporal changes that occurred in Miedzianka to be presented. Additionally, the information base has been enriched with InSAR results for monitoring terrain deformation. The observations demonstrate that the biggest changes have taken place before 1936. In addition, current urban development constitute less than 25% of historical buildings. Analysis of InSAR method indicate that the research area require more accurate technique, because of the occurrence of large number of agricultural and forest areas.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 127-140
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensory processing related to vergence eye movements – an event-related potential study
Autorzy:
Przekoracka-Krawczyk, A.
Wojtczak-Kwaśniewska, M.
Przekoracka, K.
Zeri, F.
Naskręcki, R.
Powiązania:
https://bibliotekanauki.pl/articles/173819.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
eye movements
vergences
event-related potential
Opis:
Vergence eye movements, movements executed in opposite directions, have a crucial role in depth perception and are necessary for maintaining proper binocular vision. Despite these facts, the neurophysiological studies of vergence eye movement on humans are rare and give ambiguous results. In the present study, the sensory event-related potentials (ERPs) related to the processing of stimuli called for convergence, divergence and saccade were explored. Sixteen healthy subjects (mean 23 years old) performed reflexive (visually-guided) eye movements and event-related potentials from 64 active electrodes were recorded. The significant preponderance of cortical activity for convergence among three conditions was revealed and it concerned both anterior (larger negativity) and posterior cortex (larger positivity). Here, we also reported the longest latency for convergence. These results may suggest larger cortical representation for stimuli presented in near visual space, thus the preponderance of near cells within cortex, which respond to cross retinal image disparity being a cue for convergence.
Źródło:
Optica Applicata; 2018, 48, 3; 463-475
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunoreactivity of arcuate nucleus astrocytes in rats after intragastric administration of habanero peppers (Capsicum Chinese Jacq.)
Autorzy:
Rycerz, K.
Krawczyk, A.
Jaworska-Adamu, J.
Golynski, M.
Lutnicki, K.
Balicki, I.
Powiązania:
https://bibliotekanauki.pl/articles/32031.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Habanero pepper fruits contain capsaicin (CAP) characterised by a spicy taste. Astrocytes express vanilloid receptor (TRPV1), which interacts with cannabinoids including CAP. Only a few studies revealed that CAP leads to alterations of the arcuate nucleus (ARC) structures. The aim of this study was to analyse the GFAP (GFAP-IR) and S100β (S100β-IR) immunoreactive astrocytes of ARC in adult rats after intragastric administration of habanero pepper fruits. Adult, Wistar rats received a peanut oil – control group (C) – and oil suspension of habanero pepper fruits at a dose of 0.08 g dm/kg b.w. for 7 days – E1 group – and 28 days – E2 group. After euthanasia, the brains were embedded in paraffin blocks using a routine histological technique. Frontal slices of ARC were immunohistochemically stained for GFAP and S100β using specific antibodies in the peroxidase-antiperoxidase method. Astrocytes of ARC were morphologically and morphometrically analysed under a light microscope. The results of the study did not reveal statistically significant changes in the density of GFAP-IR cells in E1 and E2 groups of rats in comparison with group C. A statistically significant increase in the density of S100β-IR astrocytes was observed in the E1 group and a decrease in the E2 group. Astrocytes with expression of both studied proteins were characterised by morphological alterations in ARC in the E2 group. The obtained results suggest an influence of CAP contained in habanero pepper fruits on the reactivity of astroglia, which may have an impact on the astrocyte-neuron interactions in order to maintain a proper activity of nervous cells in ARC.
Źródło:
Polish Journal of Veterinary Sciences; 2016, 19, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hyperfine interactions in Tb0.27-xYxDy0.73Fe2 compounds at 295 K
Autorzy:
Krawczyk, A.
Zwoźniak, A.
Guzdek, P.
Stoch, P.
Zachariasz, P.
Suwalski, J.
Pszczoła, J.
Powiązania:
https://bibliotekanauki.pl/articles/147818.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hyperfine interaction
intermetallics
Laves phase
Mössbauer effect
Opis:
This paper concerns the synthesis of yttrium-dilute Tb0.27-xYxDy0.73Fe2 intermetallic series with a borderline compound Tb0.27Dy0.73Fe2 known as Terfenol-D by arc melting, XRD analysis and 57Fe Mössbauer effect studies at 295 K. XRD analysis (295 K) shows that all samples crystallize in a cubic, Fd3m, MgCu2-type structure. The lattice parameter increases along with yttrium content. Mössbauer effect spectra for the Tb0.27-xYxDy0.73Fe2 series collected at 295 K consist of two subspectra due to easy direction of magnetization <111>. Hyperfine interaction parameters: isomer shift, magnetic hyperfine field and a quadrupole splitting were obtained from the fitting procedure of the spectra.
Źródło:
Nukleonika; 2013, 58, 1; 133-135
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 86

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies