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Wyświetlanie 1-15 z 34
Tytuł:
Effect of different wavelengths of light on laccase, cellobiose dehydrogenase, and proteases produced by Cerrena unicolor, Pycnoporus sanguineus and Phlebia lindtneri
Autorzy:
Janusz, Grzegorz
Sulej, Justyna
Jaszek, Magdalena
Osińska-Jaroszuk, Monika
Powiązania:
https://bibliotekanauki.pl/articles/1038799.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
white rot fungi
submerged cultures
visible light wavelenghts
Opis:
Three species of white rot fungi: Cerrena unicolor, Phlebia lindtneri and Pycnoporus sanguineus were cultured in two different media under five different lighting conditions: dark, white, red, blue, and green light. Laccase, cellobiose dehydrogenase, and protease activities were examined in the samples. Blue light efficiently boosted laccase synthesis in C. unicolor and P. sanguineus, whereas the highest activities (20 654 nkat/l) of P. lindtneri laccase were observed when this fungus was maintained in green light. On the contrary, the green light allowed obtaining the highest activities of cellobiose dehydrogenase of C. unicolor and P. lindtneri, while CDH of P. sanguineus seems to be dependent on white light. It is clearly visible that differences in protease activities are noticeable not only between the lights variants but also among the media used. However, high proteases activities are correlated with light variants inducing laccase in Lindeberg and Holm medium. Contrary to the cellulose-based medium, where they are weak in light variants that lead to high CDH activities.
Źródło:
Acta Biochimica Polonica; 2016, 63, 2; 223-228
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of biodiversity of Coprinus comatus using genotyping and metabolic profiling tools
Autorzy:
Pawlik, Anna
Malinowska, Anna
Siwulski, Marek
Frąc, Magdalena
Rogalski, Jerzy
Janusz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1038885.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
AFLP
ITS
Biolog
fungal diversity
Coprinus comatus
shaggy mane mushroom
Opis:
Coprinus comatus strains (CCMs) originating from Poland were identified using ITS region sequencing. Based on the sequences obtained, the genetic relationship between the CCM strains was determined and a clear separation of all strains into two main clusters was obtained. The Coprinus strains were also genetically characterized for the first time by the AFLP technique. The analysis showed that the CCMs separated into four main clusters and a high complication of a UPGMA-based dendrogram was achieved. C. comatus strains included in the analysis displayed an AFLP profile similarity level in the range from 44 to 66%. The highest similarity coefficient, 0.490, was found between CCM12 and CCM13, and the lowest (0.202) between the CCM2 and CCM5 isolates. Biolog FF MicroPlates were applied to obtain data on utilization of 95 carbon sources and mycelial growth. The analysis allowed comparison of the functional diversity of the CCM strains and revealed a broad variability within the analyzed Coprinus species based on substrate utilization profiles. Significant differences (2-48) have been shown in the substrate richness values. The Biolog experiments proved to be a good profiling technology for studying the diversity in shaggy manes due to metabolic differences and demonstrated that all the strains might be considered individually. It is evident that the strain metabolic grouping does not correlate with the grouping based on the ITS sequences and AFLP profiles, however, some similarities may be observed.
Źródło:
Acta Biochimica Polonica; 2015, 62, 4; 683-689
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The phenotypic and genomic diversity of Aspergillus strains producing glucose dehydrogenase
Autorzy:
Rola, Beata
Pawlik, Anna
Frąc, Magdalena
Małek, Wanda
Targoński, Zdzisław
Rogalski, Jerzy
Janusz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1038906.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Aspergillus
glucose dehydrogenase
identification
metabolic diversity
Opis:
Twelve Aspergillus sp. strains producing glucose dehydrogenase were identified using ITS region sequencing. Based on the sequences obtained, the genomic relationship of the analyzed strains was investigated. Moreover, partial gdh gene sequences were determined and aligned. The amplified fragment length polymorphism (AFLP) method was applied for genomic fingerprinting of twelve Aspergillus isolates. Using one PstI restriction endonuclease and five selective primers in an AFLP assay, 556 DNA fragments were generated, including 532 polymorphic bands. The AFLP profiles were found to be highly specific for each strain and they unambiguously distinguished twelve Aspergilli fungi. The AFLP-based dendrogram generated by the UPGMA method grouped all the Aspergillus fungi studied into two major clusters. All the Aspergillus strains were also characterized using Biolog FF MicroPlates to obtain data on C-substrate utilization and mitochondrial activity. The ability to decompose various substrates differed among the analyzed strains up to three folds. All of the studied strains mainly decomposed carbohydrates.
Źródło:
Acta Biochimica Polonica; 2015, 62, 4; 747-755
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of technical solutions for RCCI engines
Autorzy:
Szamrej, Grzegorz
Karczewski, Mirosław
Chojnowski, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/2097649.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
HCCI
RCCI
dual-fuel
DDFS
silnik dwupaliwowy
Opis:
Engines working in dual-fuel mode need special conditions to ignite air-fuel mixture without spark plug in a good moment with high combustion efficiency. To create homogenous air-fuel mixture the conditions in the cylinder are even more demanding. Many concepts of ignition was developed, but the most effective needs perfect mixing of fuel and air, which is a serious technical challenge. Technical solutions for dual-fuel engines cover the complexity of these problems thus leading to the further development of ignition systems in internal combustion engines. Fuel supply systems, the operation strategy of them, the shape of the combustion chamber are the most important elements to change and develop for correct operation of dual-fuel engines. The literature analysis showed a small amount of research carried out to optimize the operation of dual-fuel engines The variety of engines in which a dual-fuel system can be used requires much more research about them, and solutions necessary for their correctly operation.
Źródło:
Combustion Engines; 2022, 61, 2; 36--46
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Testing Linearity of Trend Function
O testowaniu hipotezy o liniowości trendu
Autorzy:
Kończak, Grzegorz
Wywiał, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/905044.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
kernel estimator
trend
testing
approximation of distribution function
Opis:
Testing the goodness of fit between a hypothetical trend function and its non-parametric variant will be considered. This problem was analysed e.g. by Domanski (1979, 1990), Wywiał (1990, 1995). Our result can be treated as a modification of the test proposed by Azzalini and Bowman (1993). The hypothetical trend function will be denoted by f(t, θ). It is estimated by an unbiased method. A trend function can be estimated by means of an non-parametric method. Azzalini and Bowman suggested testing the hypothesis on the linearity of the trend on the basis of the ratio of two residual variances. One of them is the residual variance of the trend estimated by means of the least square method and the other one by means of a non-parametric method. The well known Pearson curves are used for an approximation of the distribution function of the ratio. We use a different method in order to approximate the distribution of the test statistic. The table with quantiles of the test statistic are evaluated.
W artykule rozważano pewną modyfikację testu dla hipotezy głoszącej, że trend szeregu czasowego ma postać liniową, który zaproponowali Azzalini i Bowman (1903). Statystyka testowa jest ilorazem wariancji resztowej estymatora wartości funkcji liniowej trendu uzyskanej metodą najmniejszych kwadratów i pewnej formy kwadratowej reszt oceny trendu otrzymanego metodą estymacji jądrowej. Wysokie wartości tego ilorazu świadczą przeciwko hipotezie o liniowości funkcji trendu. Ze względu na złożoną postać proponowanej statystyki Azzalini i Bowman wykorzystali do aproksymacji jej rozkładu prawdopodobieństwa tzw. krzywe Pearsona W niniejszym artykule stosuje się do przybliżenia rozkładu sprawdzianu testu inną metodę wykorzystującą technikę całkowania numerycznego. Przy założeniu liniowej postaci funkcji trendu pozwoliło to wyznaczyć numerycznie kwantyle rzędu 0,9, 0,95 i 0,99 rozważanej statystyki testowej. Przedstawione wartości kwantyli mogą stanowić podstawę do podjęcia decyzji o ewentualnym odrzuceniu hipotezy o postaci trendu liniowego.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2009, 225
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Standardization of complementary work time in timber harvesting processes
Autorzy:
Kamiński, Krzysztof
Szewczyk, Grzegorz
Kocel, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/2041484.pdf
Data publikacji:
2020
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
logging
working time modelling of work time
classification
complementary time of work
Opis:
One of the essential elements of work technology assessment is task performance time. In the working day structure, production times are crucial; however, under certain conditions, complementary work times can have a share of up to 30%. Accurate determination of the time structure of a work shift is very time consuming and requires time measurements using the methods of cumulative timing or snapshot observations. For this reason, the overall share of complementary work times in a work shift is usually estimated roughly, equally for all timber harvesting conditions. The aim of this study was to determine the impact of selected working environment factors on the share of complementary work times in a work shift, in technologies on the manual-machine and the machine levels. The analyses were carried out in 33 forest districts of the Regional Directorate of State Forests in Wrocław. Among forest contractors, surveys were carried out to analyse the time structure of a working day. For each forest district, analyses of environmental factors potentially relevant to the share of complementary work times in a work shift were carried out; these included field features, dispersion of stands, features of timber, area accessibility. The total share of complementary work times in the machine-level technology variant amounted to approx. 40% and was higher than the manual-machine technological variant, where this share amounted to approx. 35%. The models developed for standardization of the share of variability of complementary work times, in the case of the manual-machine technology level, took into account the share of timber assortments with the length of over 2.5 m as well as the share of upland and mountain sites. In the case of timber harvesting at the machine technology level, the standardization model included as significant the factors such as the share of coniferous forest sites, the number of forest complexes with an area of over 100 hectares, and the total length of roads. Therefore, the above features could be selected as decisive for the share of the complementary work time category out of the full set of environmental variables taken into consideration in the estimation of the time-consumption of timber harvesting processes.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 4; 258-269
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the Distribution of Quadratic Form of Sample Mean and Variance
O rozkładzie formy kwadratowej średniej i wariancji z próby
Autorzy:
Wywiał, Janusz
Kończak, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/905703.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
quadratic form
mean
variance
distribution
Opis:
The quadratic form of the sample mean and sample variance was considered. The sample is from normal distribution. The density function of the quadratic form has been derived. The quadratic form can be applied as the test statistic for the hypothesis on expected value and variance of normal distribution. The table with approximated critical values of the test statistic has been derived.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2006, 196
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lateral and median cysts of the neck
Autorzy:
Buła, Grzegorz
Waler, Janusz
Niemiec, Andrzej
Mucha, Ryszard
Gawrychowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1396823.pdf
Data publikacji:
2012-10-01
Wydawca:
Index Copernicus International
Tematy:
lateral cysts of the neck
median cysts of the neck
nodular goiters
Opis:
The aim of the study was to present clinical picture, indications for surgery, immediate and remote results of surgical treatment for lateral and median cysts of the neck. Material and methods. A total of 17247 patients were operated between 1 January 1990 and 31 December 2011 for neck tumors. Results. Neck cysts were diagnosed in 34 (0.2%) patients, including lateral in 12 (35.3%) and median in 22 (64.7%). Lateral cyst once descended to the mediastinal. Nodular goitres were diagnosed in 17 (50%) of them - with the lateral cysts 4x and median cysts 13x. Guided fine-needle aspiration biopsy of the cyst-like lesions revealed the presence of protein masses in all patients. The lesions were found to have inflammatory character in 6 patients (17.6%) regarding median cysts (5x) or lateral cyst (1x). Out of them, 3 patients developed purulent inflammatory process. All patients were operated. The operation consisted of radical resection of the cyst only or plus partial resection of both thyroid lobes and total resection of pyramidal lobe if concomitant goitre was found. Two patients required one-stage resection of the enlarged lymph nodes in the neck. Suspected focus of thyroid papillary cancer was found by intra-operative examination in neck median cyst wall in one patient. However, paraffin tests did not confirm the suspicion. Another patient was found by histopathological examination to have active tuberculotic process within both lateral cyst and lymph nodes. The patient received intensive antituberculotic treatment postoperatively. Conclusions. 1. Median cysts of the neck are more often accompanied by thyroid tumor-like goitres than lateral cysts. 2. Radical resection of the cysts in operative treatment results in good long term patient condition and prevent in recurrence of the illness.
Źródło:
Polish Journal of Surgery; 2012, 84, 9; 445-448
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plasma cell myeloma as one of the causes of bone pain in family medicine
Autorzy:
Kade, Grzegorz
Michalak, Maciej
Kade, Bartosz
Spaleniak, Sebastian
Podgórska, Agnieszka
Hałka, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/22676881.pdf
Data publikacji:
2023-05-12
Wydawca:
Medical Education
Tematy:
myeloma
hypercalcaemia
treatment
Opis:
The article draws attention to the need to maintain oncological vigilance in the daily practice of a family doctor. Diagnosis and effective treatment of hypercalcemia and plasma cell myeloma are presented.
Źródło:
OncoReview; 2023, 13, 1; 33-35
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on noises influencing the accuracy of CNC machine straightness measurements methods based on beam position detection
Autorzy:
Budzyn, Grzegorz
Rzepka, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/100115.pdf
Data publikacji:
2020
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
laser interferometer
ISO230
machine geometry
fibre laser
straightness measurement
Opis:
Fast, easy and accurate measurement of geometry of numerically controlled machines has always been challenging. With the use of a laser interferometer, it can be precise but it is complex. On the other side, the use of granite reference blocks is fairly easy yet quite limited for many machine types and sizes. Nowadays the improvements in technology open a new way – the instruments based on the detection of laser beam spot position. Those instruments are accurate and easy to use yet, comparing to the laser interferometers and granite blocks, they are sensitive to parameters of a laser source and to changing environmental conditions. In the paper, we analyse experimentally the influence of the type and parameters of laser source on the accuracy of straightness measurements. The most commonly met in practical applications a free space and fibre based laser sources are studied and compared. The influence of environmental conditions on measurement accuracy is also shown. Finally, the conclusions about optimal methods of improving the accuracy of beam position detection methods are drawn.
Źródło:
Journal of Machine Engineering; 2020, 20, 3; 76-84
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3,7 cm Pak : 4,2 cm
Autorzy:
Ledwoch, Janusz.
Współwytwórcy:
Jackowski, Grzegorz. Ilustracje
Małginow, Wiktor. Ilustracje
Wydawnictwo Militaria. Wydawca
Data publikacji:
2019
Wydawca:
Warszawa : "Militaria"
Tematy:
37 mm. wz. 36 (armata)
Artyleria przeciwpancerna
Działa przeciwpancerne
Opracowanie
Publikacja bogato ilustrowana
Opis:
Na okładce: Limited Edition. Okładka wliczona w paginację. 481. pozycja wydawnicza.
Bibliografia na stronie 49.
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Reduction of carbon footprint from spark ignition power facilities by the dual approach
Autorzy:
Janusz-Szymańska, Katarzyna
Grzywnowicz, Krzysztof
Wiciak, Grzegorz
Remiorz, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/1845486.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spark ignition engines
digestion
gas
cofiring
CO2 emissions
membrane
separation
Opis:
Power generation units, suitable for individual users and small scale applications, are mainly based on spark ignition engines. In recently performed research, reductions of emissions coming from such units, especially considering carbon dioxide emissions, are deemed as the issue of particular importance. One of solutions, postponed to reduce impact of spark ignition engine-based units on the natural environment, is transition from fossil fuels into renewable gaseous fuels, as products of organic digestion. Nonetheless, development of new solutions is required to prevent further carbon dioxide emissions. The paper presents a novel dual approach developed to reduce carbon dioxide emissions from stationary power units, basing on spark ignition engine. The discussed approach includes both reduction in carbon content in the fuel, which is realized by its enrichment with hydrogen produced using the solar energy-supported electrolysis process, as well as application of post-combustion carbon dioxide separation. Results of the performed analysis suggest profitability of transition from fossil into the hydrogen-enriched fuel mixture, with significant rise in operational parameters of the system following increase in the hydrogen content. Nevertheless, utilization of the carbon dioxide separation leads to vital soar in internal energy demand, causing vital loss in operational and economical parameters of the analyzed system.
Źródło:
Archives of Thermodynamics; 2021, 42, 2; 171-192
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spontaneous tumor lysis syndrome in diffuse large B-cell lymphoma patient as a cause of acute kidney injury
Autorzy:
Kwiatkowski, Przemysław
Kade, Grzegorz
Hałka, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/2047204.pdf
Data publikacji:
2021-04-15
Wydawca:
Medical Education
Tematy:
spontaneous tumor lysis syndrome
interdisciplinary therapeutic procedure
acute kidney
Opis:
Idiopathic tumor lysis syndrome is a rare complication in the course of neoplastic disease. This condition requires an interdisciplinary therapeutic procedure. The presented case of spontaneous tumor lysis syndrome in the course of malignant large B-cell lymphoma describes an effective therapeutic approach in this type of cases.
Źródło:
OncoReview; 2021, 11, 1; 22-26
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparing variance of signal contained in the most recent GRACE solutions
Autorzy:
Lenczuk, Artur
Leszczuk, Grzegorz
Klos, Anna
Bogusz, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/145420.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
misja GRACE
pole grawitacyjne
harmoniki sferyczne
GRACE
degree variance
spherical harmonic coefficients
mass concentration blocks
Opis:
Gravity Recovery and Climate Experiment (GRACE) mission data is widely used in various fields of science. GRACE explored changes of the gravity field regularly from April 2002 to June 2017. In the following research, we examine variance of signal contained in two different formats of GRACE data: standard spherical harmonics and mass concentration blocks (so-called “mascons”) solutions, both provided in the most recent releases. For spherical harmonics-based solution, we use monthly gravity field solutions provided up to degree and order (d/o) 96 by three different computing centers, i.e. the NASA’s Jet Propulsion Laboratory (JPL), the German Research Center for Geosciences (GFZ) and the Center for Space Research (CSR). For the mass concentration blocks, we use values of total water storage provided by the CSR, JPL and the Goddard Space Flight Center (GSFC) computing centers, which we convert to spherical harmonic coefficients up to d/o 96. We show that using the anisotropic DDK3 filter to smooth the north-south stripes present in total wate storage obtained from standard spherical harmonics solution leaves more information than common isotropic Gaussian filter. In the case of mascons, GSFC solution contains much more information than the CSR and JPL releases, relevant for corresponding d/o. Differences in variance of signal arise from different background models as well as various shape and size of mascons used during processing of GRACE observations.
Źródło:
Geodesy and Cartography; 2020, 69, 1; 19-37
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 34

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