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Wyszukujesz frazę "Jaskowski, B.M." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Superowulacja u krów - czynniki ryzyka i selekcja dawczyń
Superovulation in cows - the risk factors and selection of donors
Autorzy:
Jaskowski, B.M.
Herudzinska, M.
Kierbic, A.
Kmiecik, J.
Nowak, T.
Gehrke, M.
Powiązania:
https://bibliotekanauki.pl/articles/860085.pdf
Data publikacji:
2016
Wydawca:
Krajowa Izba Lekarsko-Weterynaryjna
Źródło:
Życie Weterynaryjne; 2016, 91, 05
0137-6810
Pojawia się w:
Życie Weterynaryjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwości leczenia hormonalnego zaburzeń płodności u krów
Protocols of hormonal treatment of fertility disorders in cows
Autorzy:
Boryczko, Z.
Jaskowski, B.M.
Urbaniak, K.
Trela, M.
Bostedt, H.
Jaskowski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/857707.pdf
Data publikacji:
2016
Wydawca:
Krajowa Izba Lekarsko-Weterynaryjna
Źródło:
Życie Weterynaryjne; 2016, 91, 04
0137-6810
Pojawia się w:
Życie Weterynaryjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of neuron image analysis to build classification model of corpora lutea of domestic cattle
Wykorzystanie neuronowej analizy obrazu w budowie modelu klasyfikacyjnego ciałek żółtych u bydła domowego
Autorzy:
Górna, K.
Zaborowicz, M.
Jaśkowski, B. M.
Idziaszek, P.
Okoń, P.
Boniecki, P.
Przybył, J.
Powiązania:
https://bibliotekanauki.pl/articles/337157.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
neural modeling
computer image analysis
corpus luteum
ovaries
domestic cattle
modelowanie neuronowe
komputerowa analiza obrazu
ciałko żółte
jajnik
bydło domowe
Opis:
The paper presents the results of studies on the usefulness of the texture images USG (ultrasonography) analysis by GLCM (Gray Level Co-Occurrence Matrix) in neural modeling. Tests pertained to the efficacy of the classification of the corpora lutea located in ultrasound images of the domestic cattle ovaries performed by artificial neural networks. The tests were performed using three different methods: the first one used unprocessed images - raw, the second method used image processing - unsharp mask. In the third method the raw images were processed by filter reducing the noise - despeckle filter. For each of the presented methods, the best generated neural network model had the structure of the MLP (Multi Layers Perceptron). The best results, in terms of artificial neural network were obtained in the case of ultrasound images that were not processed prior to texture analysis. As a result, it generated MLP neural model of structure 5:5-8-1:1.
W pracy zaprezentowano wyniki przeprowadzonych badań nad przydatnością analizy tekstury obrazów USG (UltraSonoGraphy) metodą GLCM (Gray Level Co-Occurrence Matrix) w modelowaniu neuronowym. Sprawdzano skuteczność klasyfikacji przez sztuczne sieci neuronowe ciałek żółtych znajdujących się na obrazach USG jajników bydła domowego. Badania wykonano za pomocą trzech różnych metod: w pierwszej wykorzystano obrazy nieprzetworzone - surowe, w drugiej posłużono się metodą przetwarzania obrazu - filtrem wyostrzającym. Natomiast w trzecim sposobie obrazy surowe zostały przetworzone filtrem redukującym zaszumienia. Dla każdej z zaprezentowanych metod, najlepszy wygenerowany model sieci neuronowej miał strukturę MLP (Multi Layer Perceptron). Najlepsze wyniki, pod względem jakości sztucznej sieci neuronowej uzyskano w przypadku obrazów USG, które nie były przetwarzane przed analizą tekstur. W efekcie wygenerowano model neuronowy MLP o strukturze 5:5-8-1:1.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2016, 61, 3; 162-166
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of integrins and vascular endothelial growth factor isoforms mRNA expression in the canine uterus during perimplantation period
Autorzy:
Bukowska, D.
Kempisty, B.
Jackowska, M.
Wozna, M.
Antosik, P.
Piotrowska, H.
Jaskowski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/31799.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
integrin
vascular endothelial growth factor
isoform
mRNA expression
dog
uterus
pregnancy
bitch
Opis:
Integrins are the major receptors within the extracellular matrix (ECM) that mediate several functions connected with cell life and metabolism, such as cell adhesion, migration, cytoskeletal organization, proliferation, survival, and differentiation. A vascular endothelial growth factor (VEGF) is one of the most important angiogenic factors. It has been suggested that the expression of this gene may play crucial physiological roles in reproductive organs. All investigated endometrial tissues were isolated on day 10-12 after mating. Control bitches, used in this study, were in metestrus, which was determined according to the vaginal cytology and progesterone level in blood. Early pregnancy was verified by flushing the uterine horns with PBS. Total RNA was isolated from the bitches endometrium by means of the Chomczyński and Sacchi method, treated by DNase I, and reverse-transcribed into cDNA. A quantitative analysis of integrins α2b, β2 and β3, VEGF 164, 182 and 188 cDNA was performed by RT-PCR. In results we have shown an increased expression of all investigated genes (integrins α2b, β2 and β3, VEGF 164, 182, and 188) in pregnant bitches uterus as compared to non-pregnant females (P<0.001). Our results indicated that the expression of genes encoding integrins and vascular endothelial growth factors is different in relation to the time of the embryo implantation and it is increased in the first period of this process. This may be associated with the induction of specific mechanisms responsible for receptivity of uterus following the embryo attachment. In addition, all of investigated genes are up-regulated in a pregnancy-specific manner and the increased expression of these genes may regulate the uterus function during the implantation of canine embryos.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential expression of epidermal growth factor and transforming growth factor beta isoforms in dog endometrium during different periods of the estrus cycle
Autorzy:
Bukowska, D.
Kempisty, B.
Jackowska, M.
Wozna, M.
Antosik, P.
Piotrowska, H.
Jaskowski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/30107.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
expression
epidermal growth factor
transforming growth factor-beta
isoform
dog
endometrium
different period
oestrous cycle
Opis:
Both epidermal growth factor (EGF) and transforming growth factor (TGF) play an important physiological role in the processes of proliferation and differentiation of several different cell types. However, the expression profiles of these factors in domestic bitches endometrium are still poorly recognized. The aim of the present study was to identify and analyze the differential expression of these factors in various stages of the estrus cycle. Endometrial tissue from proestrus (n=17), estrus (n=10), day 10 diestrus (n=15), day 35 diestrus (n=18) and anestrus (n=25) was collected soon after ovariohysterectomy. Total RNA was isolated from the endometrium by means of Chomczyński and Sacchi method, treated by DNase I, and reverse- transcribed into cDNA. Quantitative analysis of EGF, TGFβ1, TGFβ2, and TGFβ3 cDNA was performed by real-time quantitative polymerase chain reaction (RT-PCR). EGF expression in canine endometrium was increased in the estrus stage as compared to proestrus (P<0.05), day 10 diestrus (P<0.05), day 35 diestrus (P<0.01) and anestrus (P<0.001). We also found the differences in EGF expression between day 10 and day 35 of estrus as well as between day 35 of estrus with anestrus (P<0.05, P<0.01, respectively). The TGFf1 transcript contents were also higher in estrus as compared to other stages (P<0.01). The TGFβ2 and TGFβ3 in the estrus stage was increased compared to proestrus, day 10 diestrus, day 35 diestrus and anestrus (P<0.05). We proved that expression of EGF and TGFβ transcript isoforms is related to the phase of estrus in bitches and therefore may be regulated by specific hormone concentrations during these periods. Our results confirm the hypothesis that these growth factors play a role in the regulation of biochemical changes in the endometrial tissues during the estrus cycle.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The in vitro culture supplements and selected aspects of canine oocytes maturation
Autorzy:
Bukowska, D.
Kempisty, B.
Piotrowska, H.
Zawierucha, P.
Brussow, K.P.
Jaskowski, J.M.
Nowicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/32078.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
in vitro culture
supplement
dog
oocyte
maturation
oestrous cycle
bitch
Opis:
The maturation of oocytes is one of the most important steps determining their developmental competence. Due to the low percentage of oocytes of bitches that reach the MII stage, searching for reagents that may stimulate the growth and maturation of oocytes is still present in this species of mammals. The most important media supplements include gonadotropins (LH, FSH, hCG), growth factors (IGF, TGF, EGF, FGF), progesterone and follicular fluid. It is suggested that the supplement of EGF, and/or follicular cells may have an important influence on the percentage of cells that reach the MII stage. Despite plenty of research based on the improvement of bitch oocytes in vitro culture, the results obtained are still unsatisfactory. Moreover, in the long stages of canine oocytes maturation many molecular and morphological modifications (including changes in mitochondria structure and configuration in the cytoplasm) are involved. In this article, the influence of selected media supplements on the efficiency of bitch oocytes in vitro maturation was described. The molecular and morphological modifications during canine oocytes maturation were also considered in the text.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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