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Tytuł:
Wpływ systemu zarządzania jakością na organizację i doskonalenie prac magazynowych
Influence of quality management system in the organization and improvement of work of warehouse
Autorzy:
Zimon, D.
Dąbrowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/1381697.pdf
Data publikacji:
2015
Wydawca:
Polskie Wydawnictwo Ekonomiczne
Tematy:
jakość
ISO 9001
gospodarka magazynowa
quality
warehouse management
Opis:
Głównym celem pracy była ocena wpływu systemu zarządzania jakością na organizację prac magazynowych w dużym przedsiębiorstwie produkcyjnym. Realizując proces badawczy skupiono się szczególnie na wpływie wymagań normy ISO 9001 na doskonalenie procesów logistycznych oraz minimalizację błędów i pomyłek. Na podstawie analizy wyników badań stwierdzono, że implementacja znormalizowanego systemu zarządzania jakością pozytywnie wpływa na usprawnienie działań logistycznych w magazynach oraz spotyka się z akceptacją kadry zarządzającej.
The main objective of this study was an assessment of the impact of the quality management system to organize work in a large warehouse manufacturing company. In carrying out the research process the author focused particularly on the impact of ISO 9001 on the improvement of logistics processes and minimizing errors and mistakes. Based on the analysis results it was found that the implementation of standardized quality management system has a positive effect on the improvement of logistics operations in warehouses and is accepted by management.
Źródło:
Gospodarka Materiałowa i Logistyka; 2015, 4; 14-20
1231-2037
Pojawia się w:
Gospodarka Materiałowa i Logistyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reappearance of Antiferromagnetic Order in $Nd_{0.9}Ca_{0.1}BaCo_{2}O_{5+δ}$ for δ > 0.51
Autorzy:
Piętosa, J.
Kolesnik, S.
Puźniak, R.
Dabrowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/1374353.pdf
Data publikacji:
2014-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.Kz
75.50.Gg
62.50.-p
Opis:
The absence of the antiferromagnetic order in $Nd_{0.9}Ca_{0.1}BaCo_2O_{5.5}$ has been found to remain unchanged by applying a hydrostatic pressure of 10 kbar. In magnetic studies of polycrystalline $Nd_{0.9}Ca_{0.1}BaCo_2O_{5+δ}$ (δ=0.07-0.69), we have found a reappearance of the antiferromagnetic phase, caused by an increase in oxygen index δ above 0.51 related to extra oxygen ions addition into the $NdO_{δ}$ plane. For the samples with δ=0.555 and 0.59, a coexistence of well developed antiferromagnetic phase with ferrimagnetic one is evidenced.
Źródło:
Acta Physica Polonica A; 2014, 126, 4a; A-50-A-52
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design Rules for Manganites with Novel Magnetic and Electronic Properties
Autorzy:
Dabrowski, B.
Chmaissem, O.
Mais, J.
Kolesnik, S.
Powiązania:
https://bibliotekanauki.pl/articles/2037095.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.12.-q
75.50.-y
Opis:
We have been systematically developing strategies for making new perovskite manganites with novel magnetic and electronic properties. This effort requires a two-fold approach: understanding the dependence of properties on chemical and structural factors and development of the ability to synthesize desired compounds. We show that, similar to other single valent 3d systems, the magnetic superexchange interactions in AMnO$\text{}_{3}$ manganites (A = rare or alkaline earth's) are dependent on the Mn-O-Mn bond angle which is a function of interatomic distances A-O and Mn-O. The local structural disorder on the A-site suppresses magnetic interactions. Recently, by comparing disordered (randomly mixed La/Ba) and ordered (forming Ba/La/Ba layers along the c-axes) perovskites we have demonstrated much more conspicuous effects of structural and charge disorder for mixed-valent manganites. We show that by stabilizing the ordered structure; i.e., by suppressing local structural and charge disorder on the A-site, a substantial increase in T$\text{}_{C}$ from 340 to 365~K can be achieved. A similar control of order on the Mn-site was achieved for SrMn$\text{}_{1-y}$Ga$\text{}_{y}$ O$\text{}_{3-\text{}_{y}\text{}_{/}\text{}_{2}$ compounds near y=0.5, while SrMn$\text{}_{1-y}$Fe$\text{}_{y}$O$\text{}_{3}$ compounds are always randomly mixed. To achieve these compounds, we have been systematically developing special synthesis techniques for extending chemical composition ranges far beyond those previously achieved, developing rules for predicting which compositions should be possible to produce by these special techniques, and establishing methods for selectively ordering or disordering mixtures of metal atoms on the A- or Mn-sites.
Źródło:
Acta Physica Polonica A; 2004, 105, 1-2; 45-56
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Properties of Atomically Arranged Perovskites
Autorzy:
Dabrowski, B.
Kolesnik, S.
Chmaissem, O.
Suescun, L.
Mais, J.
Powiązania:
https://bibliotekanauki.pl/articles/2047207.pdf
Data publikacji:
2007-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.47.Lx
75.47.Gk
61.12.Ld
Opis:
Perovskites AMO$\text{}_{3-δ}$ attain unique electronic, magnetic, ferroelectric, thermoelectric, mixed-conducting, and other functional properties through selection of the A- and M-site ions, their fractions, ionic sizes and valences, spin states, and orbital orderings, as well as the oxygen content and vacancy ordering. We illustrate here our systematic exploration of the effects of composition, temperature, pressure, and oxygen content on the thermodynamic stability and magnetic properties for La$\text{}_{1-x-y}$Sr$\text{}_{x}$Ba$\text{}_{y}$MnO$\text{}_{3}$ manganites. Parameters controlling magnetic transitions are identified through examples of single-valent compounds of RMnO$\text{}_{3}$ (the Mn-O-Mn bond angles that can be equivalently described in terms of the tolerance factor) and Sr$\text{}_{1-x}$Ca$\text{}_{x}$MnO$\text{}_{3}$ (the tolerance factor and disorder described in terms of the variance of A-site ion sizes), and the mixed-valent La$\text{}_{0.5}$Sr$\text{}_{0.5-y}$Ba$\text{}_{y}$MnO$\text{}_{3}$ (the tolerance factor, variance of sizes, and the local strains described in terms of the elongated Mn-O bonds). By using an example of kinetically stable, atomically-ordered layered-perovskites we show that improved useful properties, such as the increase in the Curie temperature T$\text{}_{C}$ and enhancement of colossal magneto-resistive effect at room temperature, can be achieved through decreases in structural distortions such as variance of sizes and local strains.
Źródło:
Acta Physica Polonica A; 2007, 111, 1; 15-25
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Pressure on Magnetic Properties of La$\text{}_{1-x}$ Sr$\text{}_{x}$CoO$\text{}_{3-δ}$(x=0.5, 0.67, 1)
Autorzy:
Piętosa, J.
Wiśniewski, A.
Puźniak, R.
Kolesnik, S.
Majjiga, M.
Dabrowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/2046737.pdf
Data publikacji:
2006-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.-m
75.47.Gk
75.30.Kz
Opis:
Influence of pressure on the phase transition temperature T$\text{}_{C}$ and on the spontaneous magnetisation M$\text{}_{0}$ of highly Sr substituted and oxygen nonstoichiometric La$\text{}_{1-x}$Sr$\text{}_{x}$CoO$\text{}_{3-δ}$ samples was investigated. An increase in T$\text{}_{C}$ and M$\text{}_{0}$ with pressure in investigated samples was found, indicating strengthening of ferromagnetic double exchange interactions, and the expansion of volume of ferromagnetic phase as a~result of enhancement in ferromagnetic interactions in both cluster-glass and long range ferromagnetic states. We did not observe clear correlation between changes in pressure coefficient dT$\text{}_{C}$/dP and changes in the formal oxidation state of the Co ion.
Źródło:
Acta Physica Polonica A; 2006, 109, 4-5; 527-532
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Hydrostatic Pressure on Magnetic Properties of (Sr,La)(Ru,Cr,Mn)O$\text{}_{3}$
Autorzy:
Piętosa, J.
Wiśniewski, A.
Puźniak, R.
Kolesnik, S.
Majjiga, M.
Dabrowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/2047244.pdf
Data publikacji:
2007-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.-m
75.30.Kz
Opis:
An influence of hydrostatic pressure, P, on phase transition temperature, T$\text{}_{C}$, and spontaneous magnetisation, M$\text{}_{0}$, of selected perovskite ruthenates (SrRuO$\text{}_{3}$, La$\text{}_{0.2}$Sr$\text{}_{0.8}$RuO$\text{}_{3}$, SrRu$\text{}_{0.9}$Mn$\text{}_{0.1}$O$\text{}_{3}$, and SrRu$\text{}_{0.9}$Cr$\text{}_{0.1}$O$\text{}_{3}$) was determined to 12 kbar. A decrease in T$\text{}_{C}$ with pressure was found for all of the studied samples. The M$\text{}_{0}$(P) remains unchanged for most of the samples, except for the La$\text{}_{0.2}$Sr$\text{}_{0.8}$RuO$\text{}_{3}$ sample. The weakening of ferromagnetic interactions with increasing pressure is consistent with complex band structure effects related to the modulation of the Ru-O hybridisation by the change of structural distortion.
Źródło:
Acta Physica Polonica A; 2007, 111, 1; 159-163
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology of Selecting the Reference Source for an Active Noise Control System in a Car
Autorzy:
Dąbrowski, Z.
Stankiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/90182.pdf
Data publikacji:
2013
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
active noise control
car
vibroacoustics
drivers
ochrona przed hałasem i wibracją
kierowcy i maszyniści
aktywna redukcja hałasu
wibroakustyka
kierowca
Opis:
At the end of the 20th century, a significant development in digital technologies of signal processing made it possible to apply active noise control methods in new domains. A proper selection of the reference signal source is a main problem in implementing such systems. This paper presents an estimation method based on an indicator of the coherent power level. It also presents a simple system of active noise control in a car, operating according to the proposed method of optimising the positioning of reference sources. This system makes it possible to considerably increase the comfort of work of drivers in various kinds of road transport without a great increase in cost. This is especially significant in the case of trucks and vans. Passive barriers are considerably more expensive in them, which results in a higher level of noise than in passenger cars.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2013, 19, 1; 117-125
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying Machine Learning to Software Fault Prediction
Autorzy:
Wójcicki, B.
Dabrowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/384105.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
classifier
fault prediction
machine learning
metric
Naïve Bayes
Python
quality
software intelligence
Opis:
Introduction: Software engineering continuously suffers from inadequate software testing. The automated prediction of possibly faulty fragments of source code allows developers to focus development efforts on fault-prone fragments first. Fault prediction has been a topic of many studies concentrating on C/C++ and Java programs, with little focus on such programming languages as Python. Objectives: In this study the authors want to verify whether the type of approach used in former fault prediction studies can be applied to Python. More precisely, the primary objective is conducting preliminary research using simple methods that would support (or contradict) the expectation that predicting faults in Python programs is also feasible. The secondary objective is establishing grounds for more thorough future research and publications, provided promising results are obtained during the preliminary research. Methods: It has been demonstrated that using machine learning techniques, it is possible to predict faults for C/C++ and Java projects with recall 0.71 and false positive rate 0.25. A similar approach was applied in order to find out if promising results can be obtained for Python projects. The working hypothesis is that choosing Python as a programming language does not significantly alter those results. A preliminary study is conducted and a basic machine learning technique is applied to a few sample Python projects. If these efforts succeed, it will indicate that the selected approach is worth pursuing as it is possible to obtain for Python results similar to the ones obtained for C/C++ and Java. However, if these efforts fail, it will indicate that the selected approach was not appropriate for the selected group of Python projects. Results: The research demonstrates experimental evidence that fault-prediction methods similar to those developed for C/C++ and Java programs can be successfully applied to Python programs, achieving recall up to 0.64 with false positive rate 0.23 (mean recall 0.53 with false positive rate 0.24). This indicates that more thorough research in this area is worth conducting. Conclusion: Having obtained promising results using this simple approach, the authors conclude that the research on predicting faults in Python programs using machine learning techniques is worth conducting, natural ways to enhance the future research being: using more sophisticated machine learning techniques, using additional Python-specific features and extended data sets.
Źródło:
e-Informatica Software Engineering Journal; 2018, 12, 1; 199-216
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lokalne i ogólnoustrojowe zmiany zawartości tłuszczu pod wpływem ćwiczeń mięśni brzucha metodą gigant-serii
The local and systemic content of fat changes under the influence of abdominal muscle exercises with giant sets method
Autorzy:
Dąbrowski, D.
Ochmann, B.
Powiązania:
https://bibliotekanauki.pl/articles/261151.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:
aktywność fizyczna
metoda gigant-serii
skład ciała
zawartość tłuszczu
physical activity
giant sets method
lipid content
body composition
Opis:
Celem pracy była ocena wpływu ćwiczeń mięśni brzucha realizowanych metodą gigant-serii na lokalne i ogólnoustrojowe zmiany zawartości tłuszczu. Badaniu poddano zawodników Muay Thai (boks tajski) i kulturystyki (n = 20). Wiek badanych wynosił od 18 do 33 lat, staż zawodniczy od 1 do 8 lat. Badania wykonano przed rozpoczęciem programu treningowego i po 30 dniach treningu. Do pomiaru całkowitej procentowej zawartości tkanki tłuszczowej w organizmie oraz lokalnej tkanki tłuszczowej zastosowano analizator składu ciała FUTREX-5500A/ZL. Pomiary grubości fałdów skórno-tłuszczowych wykonano za pomocą tkankomierza. W wyniku badań stwierdzono, że seria ćwiczeń mięśni brzucha przy wysokim poziomie otłuszczenia trzewnego, realizowanych metodą gigant serii nie obniży go, a jedynie spowoduje wzrost siły i wytrzymałości mięśni brzucha.
The aim of the study was to determine the influence of abdominal giant set workout on local and systemic changes of fat content. The study group consisted of 20 male athletes training Muay Thai and body building. The age of the subjects was 18-33 years, the training experience was 1-8 years. The measurements were taken before the beginning of the abdominal giant set workout and after 30 days. The FUTREX-5500A/ZL analyzer was used to measure the body fat and the local adipose tissue composition. The measurement of skinfolds thickness was done by means of skinfold calipers HARPENDEN C-136. As a result of examinations it was affirmed that abdominal giant set workout, by high level of visceral fat content, shall not decrease it, but only influent the increase of the strength and endurance od abdominal muscles.
Źródło:
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2012, 18, 4; 234-236
1234-5563
Pojawia się w:
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ warstwy wierzchniej podłoża o różnej zawartości piasku na rozwój wybranych gazonowych odmian Lolium perenne L
Influence of soil base with different content of sand for growth of Lolium perenne L
Autorzy:
Dabrowski, P.
Pawluskiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/886274.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
trawy
odmiany roslin
trawy gazonowe
Lolium perenne
zycica trwala
boiska pilkarskie
murawy
podloza gruntowe
warstwa wierzchnia
piasek
zawartosc piasku
rozwoj roslin
Opis:
The main aim of researches was to evaluate influence of soil base with different content of sand and clay for incipient growth and physiological condition of selected species of Lolium perenne, which are used at sport's lawns. Researches embraces three species: Henrietta, Taya and Nira which were sown on the ground with 90%, 70%, 50% and 30% part of sand. Number of germinated seeds and high of seedlings were estimated after 12 days. Intensity of promotion, total area of leafs and plant water status were estimated after 125 days. Initial growth of gazones species was stirring at water stress facilities. Number of germinated seeds after 12 days had been smaller than number of sown seeds more than 50%. Plant water potential was about 9.9 bar. Type of soil base had influence for area of leaves and intensify of promotion. At the base with 90% part of sand area of leaves was smaller than others soil bases. Nira had the smallest promotion at the ground with 50% part of sand, Taya at the ground with 30% of sand and Henrietta had the smallest promotion at the ground with 70% part of sand.
Celem badań była ocena, w jakim stopniu podłoża o różnym udziale piasku i gliny wpływają na początkowy rozwój oraz stan fizjologiczny wybranych odmian gazonowych życicy trwałej, stosowanych na murawach sportowych. Badania obejmowały trzy odmiany: Henriettę, Tayę oraz Nirę rosnące na podłożach z 90%, 70%, 50% i 30% udziałem piasku. Oceniano wschody i wysokość siewek po 12 dniach oraz intensywność krzewienia, powierzchnię całkowitą liści oraz stan uwilgotnienia po 125 dniach od wysiewu nasion. Stwierdzono, że początkowy rozwój gazonowych odmian Lolium perenne przebiegał w warunkach stresu wodnego. Liczba siewek po 12 dniach od wysiewu była ponad 50% mniejsza niż liczba wysianych nasion. Siła ssąca roślin w okresie krzewienia wynosiła średnio 9,9 bar. Rodzaj podłoża miał wpływ na wielkość powierzchni asymilacyjnej i intensywność krzewienia się traw. Na podłożu z 90% udziałem piasku powierzchnia asymilacyjnej była o 36,7% mniejsza niż na pozostałych. Odmiana Nira, krzewiła się lepiej na podłożu z 50%, Taya z 30%, a Henrietta z 70% udziałem piasku.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2011, 20, 1[51]
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of torsional-bending coupling on transverse vibration of piston engine
Autorzy:
Dąbrowski, Z.
Chiliński, B.
Powiązania:
https://bibliotekanauki.pl/articles/128026.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
bending-torsional vibrations
crankshaft
modeling of crank system
analytical solutions
numerical simulations
drgania giętno-skrętne
wał korbowy
modelowanie układów korbowych
rozwiązania analityczne
symulacje numeryczne
Opis:
The article presents the analysis of the influence of bending-torsional coupling of vibrations in the crankshaft on transverse vibrations of the engine body. In practice, there is used a simplified model, wherein transverse and torsional oscillations are analyzed independently. With the use of the model of deformable crankshaft, the authors show the influence of bending-torsional coupling on the frequency structure of transverse vibrations. The Introduction presents the problem of vibrations in combustion engines and their modelling. Further, there is presented the elastic model of the crankshaft, together with the applied assumptions and equations of motion describing vibrations in one cylinder combustion engine . Next chapter shows numerical simulation results with their initial analysis. The whole paper is summarized with conclusions about calculations and the possibility to use the results in practice.
Źródło:
Vibrations in Physical Systems; 2016, 27; 76-82
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A proposition of a torsional-bending vibrations modelling of combustion engines
Autorzy:
Dąbrowski, Z.
Chiliński, B.
Pankiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/244766.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rotational system
system of differential equation
crankshaft system
numerical solutions
Opis:
The article presents the problem of modelling coupled bending-torsional vibrations in crank systems. Because during the design of modern drive systems a growing number of phenomena are taken into account, model description of such vibrations has a practical meaning. Commonly used models of dynamics of systems assume the independence of torsional and bending vibrations, which leads to simultaneous analysis of transverse and angular vibrations. Further analysis is carried out with the use of superposition principle. Such an approach is justified in the case of quite rigid drive shafts, where vibrations are relatively small. Current trends in the design of reducing weight, reduction of toxic emissions and reducing fuel consumption, lead to the situation where shafts in crank systems become less stiff. Therefore, phenomena neglected earlier may have significant meaning. Analysis of couplings of transverse and torsional vibrations is so important that the occurrence of these phenomena usually leads to new critical states, which may be especially dangerous for engine operation. Considerations on the reasons of the occurrence and kinds of vibration couplings were presented in the introduction of the article. Further part of the article proposes the linear-bending model of the crankshaft, where transverse and angular displacements are dependent. It was tantamount to the assumption of linear relation between the vector of generalized co-ordinates and generalized forces occurring in the system. The next chapter presents the system of equations describing the dynamics of the crankshaft together with a discussion of the co-ordinate system used in the considerations. In addition, there were presented the results of numerical simulations in frequency domain confirming the conclusions taken from the analysis. The whole paper is concluded with synthetic conclusions on the formulated system of equations, simulations and the influence of the coupling on the dynamics of the whole crank system.
Źródło:
Journal of KONES; 2016, 23, 4; 71-77
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of SS-VF Bed for the Treatment of High Concentrated Reject Water from Autothermal Termophilic Aerobic Sewage Sludge Digestion
Autorzy:
Dąbrowski, W.
Malinowski, P.
Karolinczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/123643.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
autothermal thermophilic aerobic digestion
ATAD
reject water
vertical flow constructed wetland
SS VF
Opis:
The autothermal termophilic aerobic digestion (ATAD) technology is used in the municipal and industrial wastewater treatment plants (WWTPs) with personal equivalent up to 30.000. The process provides a high level of sewage sludge stabilization and its hygienization. The main operation problems are caused by the high concentration of nitrogen and phosphorus in the reject water from sewage sludge treatment and air purification (odor removal). Reject water usually is returned to the main sewage treatment, which has a negative impact, especially on the sewage treatment systems based on the sequence batch reactors (SBR). Applying high-performance and expensive separate reject water treatment methods such as SHARON, Anammox or CANON in small facilities is not justified economically. The article presents the research results concerning the effectiveness of applying subsurface vertical flow constructed wetlands (SS VF) for reject water treatment from the ATAD process. An innovative type of bed filling was used, which was produced from waste (ash from a heat and power plant). The efficiency of reject water treatment during the research period was on average at 45.6% for ammonia nitrogen, 32.3% for total phosphorus and 85.1% for BOD5. Applying SS VF beds for separate reject water treatment might ensure a stable and effective functioning of municipal WWTPs by decreasing the load of biological part of a WWTP.
Źródło:
Journal of Ecological Engineering; 2018, 19, 4; 103-110
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Building sentiment lexicons based on recommending services for the Polish language
Autorzy:
Gliwa, B.
Zygmunt, A.
Dąbrowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/305732.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
sentiment analysis
sentiment lexicons
polarity lexicons
sentiment classification
Opis:
Sentiment analysis has become a prominent area of research in computer science. It has numerous practical applications; e.g., evaluating customer satisfaction, identifying product promoters. Many methods employed in this task require language resources such as sentiment lexicons, which are unavailable for the Polish language. Such lexicons contain words annotated with their emotional polarization, but the manual creation of sentiment lexicons is very tedious. Therefore, this paper addresses this issue and describes a new method of building sentiment lexicons automatically based on recommending services. Next, the built lexicons were used in the task of sentiment classification.
Źródło:
Computer Science; 2016, 17 (2); 163-185
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania właściwości mechanicznych spiekanych biomateriałów na bazie tytanu
Investigation of mechanical properties of sintered titanium-based biomaterials
Autorzy:
Deptuła, P.
Dąbrowski, J. R.
Hościło, B.
Powiązania:
https://bibliotekanauki.pl/articles/284496.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały
stopy tytanu
właściwości mechaniczne
biomaterials
titanium alloys
mechanical properties
Opis:
Przy wykorzystaniu metod metalurgii proszków otrzymano szereg materiałów spiekanych na bazie tytanu – potencjalnych biomateriałów, bez toksycznych dodatków glinu i wanadu. Wykonano badania właściwości mechanicznych otrzymanych materiałów. Badano stopy tytanu: Ti-15Mo-2,8Nb i Ti-7,5Mo-2Fe oraz materiały kompozytowe na bazie tytanu z dodatkami 10% grafitu. Wyniki badań wytrzymałościowych wskazują, że otrzymane biomateriały charakteryzują się dobrymi właściwościami mechanicznymi. Materiały posiadają odpowiednią wytrzymałość na ściskanie i jednocześnie niskie współczynniki sprężystości, co jest bardzo ważne w przypadku materiałów do zastosowań biomedycznych.
With the use of powder metallurgy methods, a number of titanium-based sintered materials were obtained without toxic additives of aluminium or vanadium – potential biomaterials. Experiments on mechanical properties of the obtained materials were carried out. Ti-15Mo-2.8Nb and Ti-7.5Mo-2Fe alloys, as well as titanium-based composite materials with 10% of graphite added, were tested. The results of strength tests indicate that the obtained biomaterials are characterised by good mechanical properties. The materials are appropriately resistant to compression and yet they have low modulus of elasticity, which is very important in the case of materials for biomedical application.
Źródło:
Engineering of Biomaterials; 2010, 13, 92; 11-13
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
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