Temat: stimulation - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Yield parameters of old and young lucerne plants upon pre-sowing electromagnetic seed stimulation
Struktura plonu starej i młodej lucerny z nasion poddanych przedsiewnej stymulacji elektromagnetycznej
Autorzy:: Cwintal, M.
Dziwulska-Hunek, A.
Sujak, A.
Tematy:: yield parameter
old plant
young plant
lucerne plant
pre-sowing stimulation
electromagnetic stimulation
seed
stimulation
field experiment
crop
photosynthetic pigment; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/34938.pdf Link otwiera się w nowym oknie
Opis:: Lucerne is a fodder perennial plant from the Fabaceae family grown under field conditions as feed for various groups of animals. This paper is concerned with the effect of electromagnetic stimulation of lucerne seed on the yield, yield parameters, and content of photosynthetic pigments in 1-2- and 5-6- year old lucerne plants. In 2012-2013 a field experiment was conducted with 5-6-year old lucerne, which was initiated in 2008. Another experiment was started in 2012 and conducted on 1-2-year old lucerne. The research material were seeds of hybrid lucerne (Medicago x varia T. Martyn) variety Radius and sowing lucerne (Medicago sativa L.) variety Ulstar. Before sowing the seeds were stimulated with the following combinations of physical factors: C – control (untreated sample), L – laser light with a surface power density of 6 mW cm–2 during 3-fold free fall, F – alternating magnetic field with an induction of 30 mT and exposure time of 30 s; L + F – laser light and magnetic field in the above doses. Electromagnetic stimulation contributed significantly to an increase in the number of shoots per 1 m2 as compared to the control. No significant difference in the weight of a single shoot was observed between the experimental combinations. 5- 6-year old lucerne was characterised by a statistically greater shoot mass as compared with 1-2-year old plants. Statistical analysis showed that the highest yield increase was observed for the samples where seeds were stimulated with laser light and both laser light and magnetic field, relative to the control. The best results concerning concentrations of chlorophyll a and b and carotenoids were observed for alternating magnetic field, where the increase amounted to 9, 11 and 13.0%, respectively, as compared to the control.
Lucerna należy do wieloletnich roślin pastewnych z rodziny bobowatych i uprawiana jest w warunkach polowych na paszę dla różnych grup zwierząt. Niniejsza praca dotyczy wpływu stymulacji elektromagnetycznej nasion lucerny na plon i elementy jego struktury oraz na zawartość barwników fotosyntetycznych w roślinach 1-2 oraz 5-6 letnich. W latach 2012-2013 przeprowadzono doświadczenie polowe z lucerną 5-6 letnią, które założono w 2008 roku i drugie równorzędne założone w 2012 roku z 1-2 letnią. Materiałem badawczym były nasiona lucerny mieszańcowej (Medicago x varia T. Martyn.) odmiany Radius i siewnej (Medicago sativa L.) odmiany Ulstar. Przed siewem nasiona stymulowano w następujących kombinacjach: C – kontrola (bez stymulacji), L – światło lasera o powierzchniowej gęstości mocy 6 mW·cm–2 stosowane 3-krotnie, F – zmienne pole magnetyczne o indukcji 30 mT i czasie ekspozycji 30s; L+F – światło lasera i pole magnetyczne w powyższych dawkach. Stymulacja elektromagnetyczna wpłynęła istotnie statystycznie na wzrost liczby pędów na 1 m2 na tle kontroli. Z kolei nie było istotnych różnic statystycznych w masie pojedynczego pędu. Lucerna 5-6 letnia odznaczała się statystycznie większąmasą pędu w porównaniu z 1-2 letnią. Z analizy statystycznej wynika, iż największy wzrost plonu był w przypadku stymulacji światłem lasera oraz połączonej światłem lasera i polem magnetycznym w stosunku do kontroli. Najlepsze efekty stężenia chlorofili a i b oraz karotenoidów były dla zmiennego pola magnetycznego, gdzie wzrost wyniósł odpowiednio: 9, 11 i 13,0% na tle kontroli.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Combining rotary wet-spinning biofabrication and electro-mechanical stimulation for the in vitro production of functional myo-substitutes
Autorzy:: Costantini, Marco
Maiullari, Fabio
Rizzi, Roberto
Paradiso, Alessia
Volpi, Marina
Promovych, Yurii
Bearzi, Claudia
Gizynski, Konrad
Fuoco, Claudia
Gargioli, Cesare
Dolinska, Joanna
Presutti, Dario
Swieszkowski, Wojciech
Rinoldi, Chiara
Celikkin, Nehar
Opałło, Marcin
Wiśniewska, Agnieszka
Wydawca:: IOP
Cytata wydawnicza:: Celikkin, Nehar, et al. "Combining rotary wet-spinning biofabrication and electro-mechanical stimulation for the in vitro production of functional myo-substitutes." Biofabrication 15.4 (2023): 045012.
Opis:: This study was supported by the National Science Centre Poland (NCN) within the SONATA 14 2018/31/D/ST8/03647 and PRELUDIUM 19 Project No. 2020/37/N/ST5/03272. This work was also supported by Research Projects CNR Progetti at CNR under the Grant No.: CUP: B93C20046330005. We would like to acknowledge Prof Fabio Domenici at Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Rome, Italy for their support in confocal image acquisition.
In this work, we present an innovative, high-throughput rotary wet-spinning biofabrication method for manufacturing cellularized constructs composed of highly-aligned hydrogel fibers. The platform is supported by an innovative microfluidic printing head (MPH) bearing a crosslinking bath microtank with a co-axial nozzle placed at the bottom of it for the immediate gelation of extruded core/shell fibers. After a thorough characterization and optimization of the new MPH and the fiber deposition parameters, we demonstrate the suitability of the proposed system for the in vitro engineering of functional myo-substitutes. The samples produced through the described approach were first characterized in vitro and then used as a substrate to ascertain the effects of electro-mechanical stimulation on myogenic maturation. Of note, we found a characteristic gene expression modulation of fast (MyH1), intermediate (MyH2), and slow (MyH7) twitching myosin heavy chain isoforms, depending on the applied stimulation protocol. This feature should be further investigated in the future to biofabricate engineered myo-substitutes with specific functionalities.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 3.

Tytuł:: No effects of the theta-frequency transcranial electrical stimulation for recall, attention control, and relation integration in working memory
Autorzy:: Basoń, Paweł
Chinta, Suvarna
Ociepka, Michał
Chuderski, Adam
Opis:: Recent studies have suggested that transcranial alternating current stimulation (tACS), and especially the theta-frequency tACS, can improve human performance on working memory tasks. However, evidence to date is mixed. Moreover, the two WM tasks applied most frequently, namely the n-back and change-detection tasks, might not constitute canonical measures of WM capacity. In a relatively large sample of young healthy participants (N = 62), we administered a more canonical WM task that required stimuli recall, as well as we applied two WM tasks tapping into other key WM functions: attention control (the antisaccade task) and relational integration (the graph mapping task). The participants performed these three tasks three times: during the left frontal 5.5-Hz and the left parietal 5.5-Hz tACS session as well as during the sham session, with a random order of sessions. Attentional vigilance and subjective experience were monitored. We observed no significant WM task accuracy gains for neither tACS session, as compared to sham. The results suggest that canonical measures of WM capacity are strongly stable in time and hardly affected by theta-frequency tACS.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 4.

Tytuł:: Tests with Numbers
Autorzy:: Saldžiūnas, Vitas
Kovalenko, Aleksandras
Knyazev, Vladimir
Tematy:: stimulation test
number test; Pokaż więcej
Wydawca:: Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Powiązania:: https://bibliotekanauki.pl/articles/523371.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Biokinetics of $^{131}I$ after endogenous and exogenous stimulation of TSH in patients with DTC
Autorzy:: Hubalewska-Dydejczyk, Alicja
Głowa, Bogusław
Monika Tomaszuk
Sowa-Staszczak, Anna
Kołodziej, Maciej
Bałdys-Waligórska, Agata
Buziak-Bereza, Monika
Pach, Dorota
Opis:: BACKGROUND: The effective radioiodine treatment of patients with DTC is possible only after raising the TSH value over 30 μUI/ml. This effect might be obtained by either endogenous or exogenous stimulation. The aim of this study was to evaluate differences in 131I biokinetics of selected regions of interest (ROIs) in cases of endogenous and exogenous stimulation. MATERIAL AND METHODS: Two groups of 50 patients were enrolled in the study. All patients were treated with 3.7 GBq of 131I; the first group after thyroid hormone withdrawal (THW), the second group after rhTSH administration (rhTSH). On the basis of post-treatment images, the uptake ratios over selected ROIs (thyroid remnants, mediastinum, liver, stomach, abdomen, and whole-body) were compared between groups. RESULTS: In the case of uptake over the whole-body and the liver, statistically significant higher values were received for the THW group. For the remaining regions, the differences between groups were statistically insignificant, but uptake ratios in the rhTSH group were generally numerically lower compared to the THW group. CONCLUSIONS: The revealed difference in radioiodine biokinetics after thyroid hormone withdrawal or administration of recombinant human TSH may influence many important aspects of patients with DTC treatment, such as the choice of proper therapeutic scheme, the cost of therapy, and the dose assessment.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 6.

Tytuł:: 25 years of partial deafness treatment – milestones in the world’s science. Own experience
Autorzy:: Skarżyński, Henryk
Skarżyński, Piotr Henryk
Wydawca:: Uczelnia Łazarskiego
Cytata wydawnicza:: Skarżyński, H., Skarżyński, P.H. (2022). 25 years of partial deafness treatment – milestones in the world’s science. Own experience. Review of Medical Practice, 1-2, 31-39.
Opis:: Over the past 25 years, cochlear implant patients’ inclusion criteria have significantly expanded. Advances in implant technology and surgical techniques allow most patients to maintain good preoperative hearing during and after cochlear implantation. The paper presents the latest concept of partial deafness treatment, including the development and improvement of this method. The course of the surgical procedure is discussed and tips are given regarding the electrode lengths and combinations of acoustic and electrical stimulation; important information is also provided on the preservation of the preoperative structures of the hearing and the inner ear. The work is supplemented by the classification of hearing impairment and the presentation of the development and application of specially designed electrodes used in various types of hearing loss.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 7.

Tytuł:: Distribution system for generating slowly varying magnetic fields
Autorzy:: Zaguła, G.
Puchalski, C.
Czernicka, M.
Bajcar, M.
Saletnik, B.
Tematy:: magnetic fields
magnetic stimulation
coils; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Oddział w Lublinie PAN
Powiązania:: https://bibliotekanauki.pl/articles/411311.pdf Link otwiera się w nowym oknie
Opis:: The presented system describes a concept for generating slowly varying signals to stimulate biological objects with magnetic field. The system enables independent control of up to 10 induction coil and it generates changeable signal inducing magnetic fields in the range from 0.1 to 150μT and the frequencies from 0.1 to 100 Hz. The proposed system was applied to investigate the influence of magnetic fields with the aforementioned parameters on physical and chemical properties in selected types of fruits.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Nerve supply of pelvic viscera : anatomical notes, clinical implication on nerve stimulation
Autorzy:: Sienkiewicz, Justyna
Gryglewski, Andrzej
Nowakowski, Michał
Kolber, Witold
Bachul, Piotr
Goncerz, Grzegorz
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: The impact of polyphenols on Bifidobacterium growth
Autorzy:: Gwiazdowska, Daniela
Juś, Krzysztof
Jasnowska-Małecka, Joanna
Kluczyńska, Katarzyna
Tematy:: dietary polyphenol
probiotic
inhibition
stimulation; Pokaż więcej
Wydawca:: Polskie Towarzystwo Biochemiczne
Powiązania:: https://bibliotekanauki.pl/articles/1038940.pdf Link otwiera się w nowym oknie
Opis:: Polyphenols are a common group of plant based bioactive compounds, that can affect human health because of their antioxidant and antimicrobial properties as well as free-radical scavenging activity. An increasing interest is observed in the interaction between polyphenols and microbiota occurring in food and the human gut. The aim of the work presented here, was to evaluate the effect of some polyphenolic compounds on the growth of two strains of Bifidobacterium: B. adolescentis and B. bifidum. The influence of some flavonoids: naringinin, hesperidin, rutin, quercetin as well as phenolic acids: gallic, caffeic, p-coumaric, ferulic, chlorogenic, vanillic and sinapic was determined by a 96-well microtiter plate assay. In the experiments the effect of three different concentrations of polyphenols: 2, 20 and 100 µg/ml on the growth of Bifidobacterium strains was investigated. All tested compounds influenced the growth of the examined bacteria. Both stimulatory and inhibitory effects were observed in comparison to the positive control. The strongest impact on the growth of bifidobacteria was observed during the first hours of incubation. The constant inhibitory effect was observed for hesperidin and quercetin addition and was dose-dependent. B. bifidum showed a stronger dependence on phenolic acids content in the medium than B. adolescentis during the first hours of incubation.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Wpływ pola magnetycznego i elektrycznego na kiełkowanie nasion wybranych roślin kwiatowych
The influence of magnetic and electric fields on germination process of selected seeds of flower plants
Autorzy:: Kornarzyński, K.
Łacek, R.
Tematy:: nasiona
roślina kwiatowa
stymulacja magnetyczna
stymulacja polem elektrycznym
seeds
flower plants
magnetic stimulation
electric field stimulation; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Rolniczej
Powiązania:: https://bibliotekanauki.pl/articles/288763.pdf Link otwiera się w nowym oknie
Opis:: Przeprowadzono badania stymulacji nasion kwiatów ogrodowych i szklarniowych wybranymi dawkami zmiennego pola magnetycznego oraz stałego pola elektrycznego. Do badań użyto stałego pola elektrycznego o natężeniu 5 kV/cm i 12 kV/cm oraz zmiennego pola magnetycznego o częstości f = 50 Hz i indukcji 30 mT i 90 mT. Czas stymulacji polem elektrycznym i magnetycznym wynosił 30 sekund dla wszystkich nasion. Przedstawione wyniki badań świadczą o istnieniu wpływu stałego pola elektrycznego i zmiennego pola magnetycznego na różne fazy procesu kiełkowania badanych nasion i mogą być użyteczne dla producentów kwiatów ozdobnych.
This paper presents results of the investigations of the influence of the pre-sowing stimulation of garden and greenhouse flowers seeds with the magnetic and electric fields. The following seeds were used: Dahlia Zinnia, Pink Fledged, Lupine Lasted and Larkspur Lasted. The stationary electric fields with intensity of 5 kV/cm and 12 kV/cm and alternating magnetic fields with frequency of 50 Hz and induction of 30 mT and 90 mT were used during pre-sowing stimulation. The time of stimulation was fixed at value of 30 s for all stimulated fields. The results of this study confirms the significant influence of electromagnetic stimulation on different phases of germination process witch could be used by producers of decorating flowers.
Dostawca treści:: Biblioteka Nauki

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