Autor: Dziekońska, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Abrasive wear of AlSi12-Al2O3 Composite materials manufac tired by pressure infiltration
Autorzy:: Kremzer, M.
Dziekońska, M.
Sroka, M.
Tomiczek, B.
Powiązania:: https://bibliotekanauki.pl/articles/354917.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: abrasive wear
composite materials
pressure infiltration
Opis:: The aim of this study is to investigate tribological properties of EN AC-AlSi12 alloy composite materials matrix manufactured by pressure infiltration of Al₂O₃ porous preforms. In the paper, a technique of manufacturing composite materials was described in detail as well as wear resistance made on pin on disc was tested. Metallographic observations of wear traces of tested materials using stereoscopic and confocal microscopy were made. Studies allow concluding that obtained composite materials have much better wear resistance than the matrix alloy AlSil2. It was further proved that the developed technology of their preparation consisting of pressure infiltration of porous ceramic preforms can find a practical application.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 3; 1255-1260
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of boar ejaculate fraction, extender type and time of storage on quality of spermatozoa
Autorzy:: Dziekonska, A.
Swiader, K.
Koziorowska-Gilun, M.
Mietelska, K.
Zasiadczyk, L.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/32526.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: The aim of this study was to investigate the effect the sperm-rich fraction (F1) and the post-F1 fraction (F2) on the quality of boar spermatozoa stored in a liquid state. Ejaculates were collected from three Polish Landrace boars. Each ejaculate fraction was diluted with BTS short-term extender and Safe-Cell Plus (SCP) long-term extender and stored for seven days (D1-D7) at 17°C. Analyses included sperm motility parameters, normal apical ridge (NAR) acrosomes and plasma membrane integrity (PMI). Prior to the dilution of fractions, marked changes (p<0.05) were noted between F1 and F2 in progressive motility (PMOT), velocity average pathway (VAP) and velocity straight line (VCL). After the ejaculate was diluted, the type of fraction and type of extender significantly affected (p<0.05) PMOT, being markedly higher (p<0.05) for F1 extended in BTS. No marked changes (p<0.05) were observed between F1 and F2 extended in SCP for any of the analyzed sperm quality parameters during seven days of storage. Significantly higher (p<0.05) values of sperm quality parameters were noted in F1 compared with F2 for BTS on D7 of storage. The results of the four-way ANOVA analysis indicate that boar, fraction of ejaculate, extender type and day of storage had significant effects on the quality of boar stored spermatozoa. The F1 was characterised by higher quality of spermatozoa during storage in comparison with F2 in the short-term extender. Using the long-term extender containing the proteins allowed for a better application of F2, which could be important for the pig industry.
Źródło:: Polish Journal of Veterinary Sciences; 2017, 20, 1
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of commercial long-term extenders on metabolic activity and membrane integrity of boar spermatozoa stored at 17degrees celcius
Autorzy:: Dziekonska, A.
Fraser, L.
Majewska, A.
Lecewicz, M.
Zasiadczyk, L.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/31053.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: This study was aimed to analyze the metabolic activity and membrane integrity of boar spermatozoa following storage in long-term semen extenders. Boar semen was diluted with Androhep® EnduraGuard™ (AeG), DILU-Cell (DC), SafeCell Plus™ (SCP) and Vitasem LD (VLD) extenders and stored for 10 days at 17°C. Parameters of the analyzed sperm metabolic activity included total motility (TMOT), progressive motility (PMOT), high mitochondrial membrane potential (MMP) and ATP content, whereas those of the membrane integrity included plasma membrane integrity (PMI) and normal apical ridge (NAR) acrosome. Extender type was a significant (P < 0.05) source of variation in all the analyzed sperm parameters, except for ATP content. Furthermore, the storage time had a significant effect (P < 0.05) on the sperm metabolic activity and membrane integrity during semen storage. In all extenders the metabolic activity and membrane integrity of the stored spermatozoa decreased continuously over time. Among the four analyzed extenders, AeG and SCP showed the best performance in terms of TMOT and PMI on Days 5, 7 and 10 of storage. Marked differences in the proportions of spermatozoa with high MMP were observed between the extenders, particularly on Day 10 of storage. There were not any marked differences in sperm ATP content between the extenders, regardless of the storage time. Furthermore, the percentage of spermatozoa with NAR acrosomes decreased during prolonged storage, being markedly lower in DC-diluted semen compared with semen diluted with either AeG or SCP extender. The results of this study indicated that components of the long-term extenders have different effects on the sperm functionality and prolonged semen longevity by delaying the processes associated with sperm ageing during liquid storage.
Źródło:: Polish Journal of Veterinary Sciences; 2013, 16, 3
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Effect of platelet activating factor (PAF) supplementation in semen extender on viability and ATP content of cryopreserved canine spermatozoa
Autorzy:: Kordan, W.
Lecewicz, M.
Strzezek, R.
Dziekonska, A.
Fraser, L.
Powiązania:: https://bibliotekanauki.pl/articles/30804.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: platelet-activating factor
supplementation
semen
viability
spermatozoon
cryopreservation
cryopreserved spermatozoon
dog
adenosine triphosphate content
sperm
Opis:: The aim of this study was to investigate the effect of platelet activating factor (PAF) on the quality characteristics of cryopreserved canine spermatozoa. Cryopreserved semen of 5 mixed-breed dogs was treated with different concentrations of exogenous PAF (1 × 10⁻³M, 1 × 10⁻⁴M, 1 × 10⁻⁵M and 1 × 10-6M) and examined at different time intervals (0, 30, 60 and 120 min). Cryopreserved semen treated without PAF was used as the control. Sperm quality was evaluated for motility (computer-assisted semen analysis, CASA), mitochondrial function (JC-1/PI assay) and plasma membrane integrity (SYBR-14/PI assay and Hoechst 33258). Also, ATP content of spermatozoa was determined using a bioluminescence assay. Treatment of cryopreserved semen with 1 × 10⁻³ M PAF at 120 min of incubation resulted in significantly higher total sperm motility compared with the control. It was observed that PAF-improved total sperm motility was concurrent with enhanced sperm motility patterns after treatment of cryopreserved semen. Treatment of cryopreserved semen with PAF did not improve either sperm mitochondrial function or plasma membrane integrity, as monitored by different fluorescent membrane markers. Furthermore, ATP content of cryopreserved spermatozoa was significantly higher when PAF was used at a concentration of 1 × 10⁻³ M compared with the control and other PAF treatments, regardless of the incubation time. The findings of this study indicated that treatment with 1 × 10⁻³ M PAF at 120 min of incubation rendered better quality of cryopreserved canine semen, which was associated with improved sperm motility parameters and ATP content. It can be suggested that exogenous PAF addition is beneficial as a supplement for canine semen extender used for cryopreservation.
Źródło:: Polish Journal of Veterinary Sciences; 2010, 13, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effects of storage in different semen extenders on the pre - freezing and post - thawing quality of boar spermatozoa
Autorzy:: Dziekonska, A.
Zasiadczyk, L.
Lecewicz, M.
Strzezek, R.
Koziorowska-Gilun, M.
Fraser, R.
Mogielnicka-Brzozowska, M.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/31403.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: The aim of this study was to investigate the effects of storage of semen in different commercial extenders on the pre-freezing and post-thawing quality of boar spermatozoa. Semen was diluted in BTS, Androhep (AH) and Gedil (GD), stored for 24 h at 17°C, and then frozen in accordance with the cryopreservation protocol. Analyses of the quality of spermatozoa included: motility, normal apical ridge (NAR) acrosome, plasma membrane integrity (PMI), mitochondrial membrane potential (MMP), measurements of ATP content and activity of superoxidase dismutase (SOD) and glutathione peroxidase (GPx). Prior to the freezing process, no significant effect of the extender on the sperm quality parameters was noted. After thawing the spermatozoa it was demonstrated that the type of extender used influenced PMI, MMP, ATP content and activity of GPx. In the AH extender the percentage of spermatozoa with PMI and ATP content in spermatozoa was significantly higher (P<0.05) as compared to the BTS or GD extenders. In addition, semen stored in the AH was characterised by a statistically higher (P<0.05) percentage of spermatozoa with MMP and increased activity of GPx as compared with the BTS. The results obtained indicate that for the cryopreservation process, boar spermatozoa stored for 24 hours in liquid state can be used. However, the type of extender used prior to freezing may have a significant effect on the post- thawing quality of the spermatozoa. The AH extender better secured the quality of thawed boar spermatozoa as compared with the BTS or GD.
Źródło:: Polish Journal of Veterinary Sciences; 2015, 18, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Effects of the platelet - activating factor (PAF) on selected quality parameters of cryopreserved bull semen (AI) with reduced sperm motility
Autorzy:: Lecewicz, M.
Kordan, W.
Majewska, A.
Kaminski, S.
Dziekonska, A.
Mietelska, K.
Powiązania:: https://bibliotekanauki.pl/articles/30171.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: The aim of the study was to determine the effects of platelet-activating factor (PAF) on selected quality parameters of cryopreserved bull semen with reduced sperm motility used for artificial insemination. The aim of experiment 1 was to identify the optimal concentration of the phospholipid able to preserve sperm viability. Cryopreserved semen was treated with different PAF concentrations: 1x10-5M, 1x10-6M, 1x10-7M, 1x10-8M and 1x10-9M. The experiment demonstrated that PAF at concentration 1x10-9M increased most the sperm viability parameters (motility parameters, plasma membrane integrity and mitochondrial function) after 120 min of incubation of thawed semen at 37oC. Cryopreserved bull semen with reduced sperm motility (below 70%) was supplemented with PAF in a concentration of 1x10-9M. A statistically significant increase in sperm motility, percentage of linear motile spermatozoa and VSL value was observed after 120 min incubation of sperm with 1x10-9M PAF. Sperm supplementation with PAF also had positive effects on plasma membrane integrity and percentage of spermatozoa with preserved mitochondrial transmembrane potential, but the differences were not statistically significant. The results indicated positive effects of PAF supplementation at a concentration of 1x10-9M on the selected sperm quality parameters in cryopreserved bull semen with reduced motility.
Źródło:: Polish Journal of Veterinary Sciences; 2016, 19, 1
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Identification of proteoforms of albumin and kallikrein in stallion seminal plasma and their correlations with sperm motility
Autorzy:: Mogielnicka-Brzozowska, M.
Fraser, L.
Dziekońska, A.
Gackowska, K.
Sobiewska, M.
Kuzborska, A.
Majewska, A.M.
Filipowicz, K.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/2087533.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: seminal plasma proteins
albumins
kallikreins
stallion
Źródło:: Polish Journal of Veterinary Sciences; 2019, 2; 227-235
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Leeches [Hirudinida: Piscicolidae] - parasites of Antarctic fish from Channichthyidae family
Autorzy:: Bielecki, A.
Rokicka, M.
Ropelewska, E.
Dziekonska-Rynko, J.
Powiązania:: https://bibliotekanauki.pl/articles/839261.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: parasite
leech
Hirudinida
Piscicolidae
ectoparasite
fish
Antarctic fish
Channichthyidae
infection intensity
Trulliobdella capitis
Cryobdella antarctica
Nototheniobdella sawyeri
Elephant Island
South Georgia
Joinville Island
Źródło:: Annals of Parasitology; 2008, 54, 4; 345-348
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Leeches [Hirudinida: Piscicolidae] - parasites of Antarctic fish from Channichthyidae family
Autorzy:: Bielecki, A.
Rokicka, M.
Ropelewska, E.
Dziekońska-Rynko, J.
Powiązania:: https://bibliotekanauki.pl/articles/2143827.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: parasite
leech
Hirudinida
Piscicolidae
ectoparasite
fish
Antarctic fish
Channichthyidae
infection intensity
Trulliobdella capitis
Cryobdella antarctica
Nototheniobdella sawyeri
Elephant Island
South Georgia
Joinville Island
Opis:: There has hitherto been very few research projects focusing on ectoparasites of Antarctic fishes. The presently reported study provides data on the prevalence and the intensity of leeches (Hirudinida: Piscicolidae) infecting fishes. The materials were collected in December–February 1986/87 off the Elephant Island, South Georgia, Joinville Island, and South Shetlands. The following leech taxa were recorded in the Antarctic fishes of the family Channichthyidae: Trulliobdella capitis (Brinkmann, 1947); Cryobdella antarctica Epstein, 1970; Nototheniobdella sawyeri Utevsky, 1997; and Cryobdella sp. The above findings constitute new geographic records from off Elephant and Joinville Island and South Georgia.
Źródło:: Wiadomości Parazytologiczne; 2008, 54, 4; 345-348
0043-5163
Pojawia się w:: Wiadomości Parazytologiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Preliminary study on the prevalence of tick-borne pathogens in host-seeking Dermacentor reticulatus (Acari: Amblyommidae) ticks from the urban area of the city of Olsztyn - Borrelia burgdorferi sensu lato complex
Autorzy:: Kubiak, K.
Sielawa, H.
Dziekonska-Rynko, J.
Dmitryjuk, M.
Dzika, E.
Powiązania:: https://bibliotekanauki.pl/articles/5689.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: prevalence
tick-borne pathogen
host
Dermacentor reticulatus
Acari
Amblyommidae
tick
urban area
Olsztyn city
Borrelia burgdorferi
Źródło:: Annals of Parasitology; 2016, 62, Suppl.
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Relationship between sociodemographic factors and depression symptoms and level of diabetes acceptance
Autorzy:: Cyuńczyk, A.
Misiak, B.
Lewko, K.
Dziekońska, M.
Lewko, J.
Powiązania:: https://bibliotekanauki.pl/articles/1918889.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Medyczny w Białymstoku
Tematy:: Diabetes
glycemic control
depression
disease acceptance
Opis:: Introduction: Diabetes is a disease whose course is strongly determined by self-monitoring and self-care. Ensuring metabolic control of diabetes is not only important for the current state of health, it also allows to maintain the body in the best condition despite the existing chronic disease. Purpose: To assess the relationship between sociodemographic factors and depression symptoms and the level of disease acceptance in diabetes. Materials and methods: The study used a diagnostic survey method with a questionnaire, the Beck Depression Inventory, and the Acceptance of Illness Scale. The study group consisted of 43 women (51%) and 41 men (49%). A total of 67% of respondents had diagnosed type 2 diabetes, 24% type 1 diabetes, and 6% LADA. Average disease duration was 15 years. Results: In the studied group, 15% of patients had diagnosed symptoms of depression; while according to the Beck Depression Inventory, depressive episodes occurred more often in mild (30%) and moderate (23%) severity. They were observed more often in people over 50 years old. Depression symptoms were significantly more common in the group of overweight and obese people (p=0.022, r(X,Y)=0.2490). Conclusions: The problem of depression increases with disease duration. People diagnosed with type 2 diabetes have lower levels of disease acceptance. Disease acceptance is a factor that eliminates the occurrence of depressive disorders of varying severity.
Źródło:: Progress in Health Sciences; 2019, 2; 21-28
2083-1617
Pojawia się w:: Progress in Health Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Seasonal-dependent variations in metabolic status of spermatozoa and antioxidant enzyme activity in the reproductive tract fluids of wild boar/domestic pig hybrids
Autorzy:: Dziekonska, A.
Fraser, L.
Koziorowska-Gilun, M.
Strzezek, J.
Koziorowski, M.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/2087956.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: This study investigated seasonal changes in the metabolic performance of spermatozoa and activity of the antioxidant enzymes in the seminal plasma of three wild boar/domestic pigs (aged 1.5 to 2.5 years) and the activity of the antioxidant enzymes in fluids of the cauda epididymidis and vesicular glands from 16 wild boar/domestic pig hybrids (aged 1 to 3 years). Parameters of the sperm metabolic activity, such as total motility, mitochondrial functions, and measurements of oxygen uptake, ATP content and L-lactate production, were analyzed during the spring-summer and autumn-winter periods. Besides these sperm metabolic parameters, the sperm membrane integrity was also assessed. Total protein content and activity of the antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx), were measured in the reproductive tract fluids. There were no marked significant differences (P > 0.05) between the seasonal periods in terms of sperm motility, mitochondrial function and oxygen uptake; however, spermatozoa collected during the autumn-winter period exhibited higher (P < 0.05) ATP content and L-lactate production than those harvested during the spring-summer period. It was found that the vesicular gland fluid exhibited a higher level of SOD activity during the spring-summer period compared with the autumn-winter period. Furthermore, CAT activity in the seminal plasma and vesicular gland fluid was greater during the autumn-winter. Total protein content was significantly higher in the vesicular gland fluid, whereas the cauda epididymidal fluid exhibited greater SOD and GPx activities, irrespective of the seasonal period. The findings of this study confirmed seasonal-related differences in the metabolic performance of spermatozoa and activity of antioxidant enzymes of the reproductive tract of the boar/domestic pig hybrids.
Źródło:: Polish Journal of Veterinary Sciences; 2014, 17, 2; 307-313
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Semen quality assessments and their significance in reproductive technology
Autorzy:: Kordan, W.
Fraser, L.
Wysocki, P.
Strzezek, R.
Lecewicz, M.
Mogielnicka-Brzozowska, M
Dziekonska, A
Soliwoda, D
Koziorowska-Gilun, M
Powiązania:: https://bibliotekanauki.pl/articles/32408.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Semen quality assessment methods are very important in predicting the fertilizing ability of persevered spermatozoa and to improve animal reproductive technology. This review discusses some of the current laboratory methods used for semen quality assessments, with references to their relevance in the evaluation of male fertility and semen preservation technologies. Semen quality assessment methods include sperm motility evaluations, analyzed with the computer-assisted semen analysis (CASA) system, and plasma membrane integrity evaluations using fluorescent stains, such as Hoechst 33258 (H33258), SYBR-14, propidium iodide (PI), ethidium homodimer (EthD) and 6-carboxyfluorescein diacetate (CFDA), and biochemical tests, such as the measurement of malondialdehyde (MDA) level. This review addresses the significance of specific fluorochromes and ATP measurements for the evaluation of the sperm mitochondrial status. Laboratory methods used for the evaluation of chromatin status, DNA integrity, and apoptotic changes in spermatozoa have been discussed. Special emphasis has been focused on the application of proteomic techniques, such as two-dimensional (2-D) gel electrophoresis and liquid chromatography mass spectrometry (LC-MS/MS), for the identification of the properties and functions of seminal plasma proteins in order to define their role in the fertilization-related processes.
Źródło:: Polish Journal of Veterinary Sciences; 2013, 16, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Solutions for improvement of saccharification and fermentation of high gravity rye mashes
Autorzy:: Pielech-Przybylska, K.
Balcerek, M.
Patelski, P.
Dziekonska-Kubczak, U.
Powiązania:: https://bibliotekanauki.pl/articles/26294.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Źródło:: International Agrophysics; 2019, 33, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki