Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "rate test" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 30
Tytuł:
Effect of Pre-strain on Hydrogen Embrittlement in Intercritically Annealed Fe-6.5Mn-0.08C Medium-Mn steels
Autorzy:
Kim, Sang-Gyu
Yoon, Young-Chul
Ko, Seok-Woo
Hwang, Byoungchul
Powiązania:
https://bibliotekanauki.pl/articles/2174575.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
medium-manganese steel
hydrogen embrittlement
electrochemical charging
pre-strain
slow strain-rate tensile test
SSRT
Opis:
The present research deals with the effect of pre-strain on the hydrogen embrittlement behavior of intercritically annealed medium-Mn steels. A slow strain-rate tensile test was conducted after hydrogen charging by an electrochemical permeation method. Based on EBSD and XRD analysis results, the microstructure was composed of martensite and retained austenite of which fraction increased with an increase in the intercritical annealing temperature. The tensile test results showed that the steel with a higher fraction of retained austenite had relatively high hydrogen embrittlement resistance because the retained austenite acts as an irreversible hydrogen trap site. As the amount of pre-strain was increased, the hydrogen embrittlement resistance decreased notably due to an increase in the dislocation density and strain-induced martensite transformation.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 4; 1491--1495
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the impact of the stability training on fitness rated with the Functional Movement Screen Test in a group of professional football players
Ocena wpływu treningu stabilizacyjnego na sprawność ocenianą testem Functional Movement Screen
Autorzy:
Kołodziej, Gabriela
Kołodziej, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/437973.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
football
functional rate
the FMS Test
piłka nożna
ocena funkcjonalna
test FMS
Opis:
Introduction: Football is a dynamic, ever-growing team sport. It’s fast action and spectacular character give this sport the title of the most popular in the world. However, due to its specificity it is related with a high risk of injury. An important element of injury prevention is comprehensive functional assessment of the player. The Functional Movement Screen Test is used as a tool to assess the risk of injury and basic movement patterns to determine the occurrence of disorders within the musculoskeletal system. Objective: The aim of the study is to compare the level of functional performance of football players who have stability exercises in their daily training sessions and of the players without such training. Material and Methods: The study was conducted in Rzeszow and the surrounding area on a group of 120 players. The functional assessment was performed using FMS test. Results: In the study group of players high level of functionality was observed. However, in the control group a series of tests showed an asymmetry and irregularities in the basic movement patterns. Conclusions: The study gave answers to the research questions.
Wstęp: Piłka nożna jest dynamicznym, ciągle rozwijającym się sportem drużynowym. Szybka akcja oraz widowiskowy charakter powodują, że jest to dyscyplina najbardziej popularna na świecie. Jednak ze względu na swoją specyfikę sport ten związany jest z dużym ryzykiem występowania urazów i kontuzji. Istotnym elementem profilaktyki przeciwurazowej jest kompleksowa funkcjonalna ocena zawodnika. Do tego celu służy The Functional Movement Screen Test, używany jako narzędzie screeningowe do oceny ryzyka występowania kontuzji oraz podstawowych wzorców ruchowych, aby stwierdzić występowanie zaburzeń w obrębie aparatu ruchu. Cel pracy: Celem pracy jest porównanie poziomu sprawności funkcjonalnej zawodników, u których w codziennym treningu są wprowadzone ćwiczenia o charakterze stabilizacyjnym w porównaniu z zawodnikami bez treningu. Test w grupie zawodników grających Materiał i metody: Badania przeprowadzono na terenie województwa podkarpackiego w grupie 120 piłkarzy. Ocenę funkcjonalną wykonano za pomocą testu FMS. Wyniki: U zawodników z grupy badanej zaobserwowano wysoki poziom sprawności funkcjonalnej. Jednak w grupie kontrolnej wykonywane testy wykazywały szereg asymetrii i nieprawidłowości w podstawowych wzorcach ruchowych.
Źródło:
Medical Review; 2016, 4; 455-464
2450-6761
Pojawia się w:
Medical Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigation of mechanical properties of copper at high-strain-rate loading conditions
Badania doświadczalne właściwości mechanicznych miedzi w warunkach dynamicznego odkształcenia
Autorzy:
Gacek, J.
Janiszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/327960.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
test pierścieniowy
uderzeniowy test Taylora
deformacja dynamiczna
expanding ring test
Taylor impact test
high-strain-rate deformation
Opis:
Experimental studies on mechanical properties of Cu-ETP copper under strain rates above 2.6 x 103 s-1 are presented in this work. The electromagnetic expanding ring experiment and impact Taylor test were used as the tools for examining the dynamic behaviour of selected copper. Experimental study by using above-mentioned techniques was performed to assess a methodological correctness of experiments in which laboratory apparatuses developed at Military University of Technology were used.
W artykule przedstawiono badania doświadczalne właściwości mechanicznych miedzi Cu-ETP w warunkach dynamicznego obciążenia. Badania dynamiczne wykonano za pomocą elektromagnetycznego testu pierścieniowego i zderzeniowego testu Taylora. Celem badań była ocena poprawności metodycznej przeprowadzonych badań, podczas których zastosowano aparaturę laboratoryjną, opracowaną w Wojskowej Akademii Technicznej.
Źródło:
Diagnostyka; 2011, 3(59); 13-17
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rate effect on the shear resistance of sandy clay in direct shear tests
Wpływ prędkości na opory ścinania iłów piaszczystych w badaniach bezpośredniego ścinania
Autorzy:
Dolzyk-Szypcio, K.
Chmielewska, I.
Powiązania:
https://bibliotekanauki.pl/articles/40853.pdf
Data publikacji:
2017
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
sandy loam
shear resistance
shear test
rate effect
Źródło:
Acta Scientiarum Polonorum. Architectura; 2017, 16, 4
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a Certain Method of Determining the Burning Rate of Gun Propellant
Autorzy:
Leciejewski, Zbigniew
Surma, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/358624.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
ballistics
closed vessel test
gun propellant
burning rate
Opis:
The relation between the burning rate, r, of a solid propellant and the pressure, p, of gases surrounding the burning propellant surface is the basic component of the gas inflow equation. The applicability of a linear form of the burning rate law is limited only to those propellants for which the same pressure impulses, Ip, were obtained during closed vessel tests at different loading densities. To determine the values of the power form of the burning rate law it is necessary to know the values of the energetic and ballistic characteristics of the propellant. In this paper, a method is presented for determining the relation r(p) for which the only input data are the pressure, p(t), of the propellant gases recorded during closed vessel tests (only for a single specific loading density) and information on the shape and geometric dimensions of the propellant grains. An analysis of the possibility of applying the proposed method, through examples of single-base, double-base and multi-base propellants with neutral and progressive characteristics of burning surface changes, was carried out for the purposes of the present study. The qualitative and quantitative results of burning rate analyses prove the validity of the assumptions made.
Źródło:
Central European Journal of Energetic Materials; 2019, 16, 3; 433-448
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Modified Holm’s Stepwise Rejective Multiple Test Procedure
Zmodyfikowana wielokrotna procedura testowa kroczącego odrzucenia Holma
Autorzy:
Parys, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/905696.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
multiple test procedure
stepwise procedure
familywise error rate
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:
Compressive Deformation Behavior of Thick Micro-Alloyed HSLA Steel Plates at Elevated Temperatures
Autorzy:
Lee, J.-H.
Kim, D.-O.
Lee, K.
Powiązania:
https://bibliotekanauki.pl/articles/351774.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alloys
rolling
strain rate
compression test
HSLA steel
Opis:
The hot deformation behavior of a heavy micro-alloyed high-strength low-alloy (HSLA) steel plate was studied by performing compression tests at elevated temperatures. The hot compression tests were carried out at temperatures from 923 K to 1,223 K with strain rates of 0.002 s-1 and 1.0 s-1. A long plateau region appeared for the 0.002 s-1 strain rate, and this was found to be an effect of the balancing between softening and hardening during deformation. For the 1.0 s-1 strain rate, the flow stress gradually increased after the yield point. The temperature and the strain rate-dependent parameters, such as the strain hardening coefficient (n), strength constant (K), and activation energy (Q), obtained from the flow stress curves were applied to the power law of plastic deformation. The constitutive model for flow stress can be expressed as σ = (39.8 ln (Z) – 716.6) · ε(−0.00955ln(Z) + 0.4930) for the 1.0 s-1 strain rate and σ = (19.9ln (Z) – 592.3) · ε(−0.00212ln(Z) + 0.1540) for the 0.002 s-1 strain rate.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1191-1196
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance test results analysis of crossbred gilts produced in the Bydgoszcz Breeding Region
Analiza wyników testu wydajności loszek mieszańców wyprodukowanych w Bydgoskim Regionie Hodowli
Autorzy:
Michalska, G.
Nowachowicz, J.
Bucek, T.
Wasilewski, P.D.
Kmiecik, M.
Powiązania:
https://bibliotekanauki.pl/articles/961529.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
crossbred gilts
performance test
growth rate
selection index
Opis:
The aim of this study was to analyse the results of performance test of crossbred gilts of Polish Large White and Polish Landrace breed conducted in years 2009–2013 in the Bydgoszcz Breeding Region. They came from two crossing variants (sows breed at first position): [PLW×PL] and [PL×PLW]. Crossbred gilts [PL×PLW] in all analysed years (except for 2001) had higher daily gain of body weight standardised on 180th day than [PLW×PL] animals. From 2009 till 2013 the growth rate of tested crossbred gilts, i.e. [PLW×PL] and [PL×PLW] increased by 10 and 8 g, respectively. Within the span of 5 years (2009–2013) an improvement of breeding value of animals determined as selection index value, which increased by 7 points in [PLW×PL] gilts and by 4 points in [PL×PLW] pigs. This proves the effective improvement of growth and slaughter performance of crossbred gilts coming from the Bydgoszcz Breeding Region within the space of years 2009–2013, being maternal component used in breeding and commercial crossing, which should be monitored in following years.
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2017, 16, 1
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of heart rate variability during head-up tilt-test in patients with vasovagal syncope
Autorzy:
Budrejko, Szymon
Kempa, Maciej
Chmielecka, Monika
Kozłowski, Dariusz
Raczak, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/895735.pdf
Data publikacji:
2018-09-28
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
tilt table test
syncope
vasovagal syncope
heart rate variability
Opis:
Introduction: Syncope is defined as transient loss of consciousness, due to decrease in brain perfusion. The most frequent mechanism is vasovagal syncope. In many patients, the cause of syncope remains unspecified, despite an extensive diagnostic work-up. Tilt-test (TT) is an acknowledged diagnostic tool for syncope. Currently, the so-called Italian protocol of TT is most widely used. Vasovagal syncope is caused by impaired circulatory regulation in response to orthostatic stress. One of the available tools to examine the influence of the nervous system on the circulation is the analysis of heart rate variability (HRV). Despite numerous publications concerning HRV parameters and autonomic regulation in patients with syncope, direct comparisons and metaanalysis of the results is impossible, due to variability of TT protocols and study group specifications. Aim of the study: As there is no uniform model of HRV during TT, we aimed to analyze HRV parameters during TT (performed according to the Italian protocol) in patients with vasovagal syncope, in order to determine the possible application of HRV measurements in clinical practice in that group of patients. Detailed objectives were: (1) analysis and comparison of HRV in patients with and without the history of syncope; (2) analysis of HRV changes in consecutive stages of TT; (3) identification of possible HRV differences between patients with positive and negative TT results. Materials and methods: Patients between 18 and 50 years of age were qualified for the study, if they had a history of at least 2 incidents of syncope or presyncope within the preceeding 6 months, and if signs and symptoms indicated the vasovagal mechanism. The study group included 150 patients: 100 consecutive patients with a postive TT result (POS), and 50 consecutive patients with a negative TT result (NEG). The control group (CG) comprised 50 volunteers with no history of syncope nor presyncope, matched according to age and sex to the study group. In all patients a TT was performed according to the Italian protocol, with paced breathing at a rate of 15/min. Time-domain (meanRR, SDNN, RMSSD, pNN50) and frequency-domain (abs_LF, abs_HF, rel_LF, rel_HF, norm_LF, norm_HF, LF/HF) HRV parameters were analyzed and compared at different stages of TT in the study groups as specified above. Results: 100 patients at the age of 18-44 years were included in the POS group, 50 patients at the age of 18-39 years in the NEG group, and 50 volunteers at the age of 20-39 in the CG. Volunteers in the control group developed unexpectedly high percentage of positive TT (14 patients). For consistency of analysis, the CG was thus subdivided according to the result of the TT into CG_POS (positive result of TT) – 14 patients, and CG_NEG (negative result of TT) – 36 patients. Based on HRV analaysis, no significant differences in HRV values were noted between patients with a history of syncope and positive or negative result of TT. Upright tilt resulted in HRV changes of the same direction and value in syncopal patients in the POS and NEG goup, as well as in patients in the CG_NEG group. Conclusion: HRV values and changes of those values at subsequent stages of TT were not different between syncopal patients with postive or negative TT result, or negative TT control group. The Italian protocol of TT may be associated with a surprisingly high percentage of false positive results.
Źródło:
European Journal of Translational and Clinical Medicine; 2018, 1, 1; 26-38
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oddities in determining burning rate on basis of closed vessel tests of single base propellant
Autorzy:
Leciejewski, Z. K.
Powiązania:
https://bibliotekanauki.pl/articles/280633.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
internal ballistics
closed vessel test
smokeless propellant
burning rate law
Opis:
The proper determination of parameter values defining the dependence of the burning rate r of smokeless propellant on gas pressures p surrounding the burning grains constitutes one of the goals of experimental pyrostatic (closed vessel) testing. The aim of the hereby paper is the analysis of results of experimental closed vessel tests realized in the context of isolating possible oddities in determining the relation r(p). During the experimental tests, a single base propellant with grains of different or similar combustible layer thickness e1 was burned while implementing identical or various loading conditions. Identical ignition systems were used in both instances. The results of experimental tests and theoretical analysis performed permit a more complete verification of the assumptions with regard to proper realization of pyrostatic comparative tests and prove additionally that closed vessel tests should be focused in the direction of “dedicated” tests.
Źródło:
Journal of Theoretical and Applied Mechanics; 2014, 52, 2; 313-321
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of face mask use during the non-stress test in pregnancy
Autorzy:
Gursoy, Ali
Tekbas, Ezgi Dogan
Powiązania:
https://bibliotekanauki.pl/articles/2211807.pdf
Data publikacji:
2023-03-25
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
COVID-19
face mask
fetal heart rate
non-stress test
Opis:
Introduction and aim. Face masks used to protect against the COVID 19 pandemic have become a daily routine. The aim of this study was to examine the possible effects of mask use on non-stress test (NST) results during pregnancy. Material and methods. A total of 951 pregnant women were included in the study. They were divided into two groups as those who wear masks and those who do not. These pregnant women were also divided into subgroups as preterm and term periods. Results. The mean age of the pregnant women was 31.2±4.9 and their gestational weeks were between 34+0 and 40+6. There was no significant difference between 34 and 37 gestational weeks pregnants in terms of FHR, reactivity, non-reactivity, deceleration, FHR category distribution and number of fetal movements (p>0.05). The variability was significantly higher in those who did not wear a mask (p37 gestational weeks there was no significant difference in terms of FHR, reactivity, non-reactivity, variability, deceleration and FHR category distribution (p>0.05). The number of fetal movements was significantly (p<0.05) lower in the mask-wearing group. Conclusion. Mask use should be considered in NSTs where variability is reduced or fetal movements are low. Thus, misinterpretation of the NST can be avoided.
Źródło:
European Journal of Clinical and Experimental Medicine; 2023, 1; 114-119
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation and experimental study of SCR injection system
Autorzy:
Du, J.
Zhang, Y.
Cai, Y.
Powiązania:
https://bibliotekanauki.pl/articles/260223.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ammonia grille
flow field
uniformity
SCR test
the denitrification rate
Opis:
According to actual engineering test, we design a linear controlled spray ammonia grille, and apply it to the SCR injection system of ship tail gas treatment. In this paper, the geometric model of ammonia injection grid was built in the flue of diesel engine, and the effects of spray atomization, ammonia uniformity and urea droplet distribution on spray atomization were simulated. Then the test bench was set up to observe the injection status of the ammonia injection grille. The NOx content of the outlet was measured by the original data of the flue gas, and the experimental data were processed. We calculate the denitrification rate by taking the average value to verify the correctness of the spray ammonia grid scheme.
Źródło:
Polish Maritime Research; 2018, S 2; 49-55
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EXECUTIVE FUNCTION AND MEMORY FOR THE REY-OSTERREITH COMPLEX FIGURE TASK: RELATIONSHIP BETWEEN GENDER, HEART RATE AND NEUROPSYCHOLOGICAL PERFORMANCE IN MOROCCAN STUDENT SAMPLE
Autorzy:
Salim, Elmossati Mohamed
Touhami Ahami, Ahmed Omar
Oudda, Hassan
Ahmadou, Taher Moussa
Powiązania:
https://bibliotekanauki.pl/articles/2138162.pdf
Data publikacji:
2022-03-20
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
visual perception
working memory
heart rate
gender
Rey Complex Figure Test
Opis:
The present study has been conducted to investigate the visuospatial constructive cognition and memory among healthy students, as measured by the Rey Complex Figure Test (RCFT). We have compared the data used to draw the figures with the hypothesis that gender and physiological measurements have an impact on neuropsychological skills. One hundred twenty-five students (43 male, 82 female; age 18–32 years) participated in this study with a computerized numerical recording of the digital plot of the RCFT and a set of socio-demographic variables. Results revealed that visual perception and working memory were impacted by social and health determinants. Additionally, this study presents evidence supporting the implication of resting heart rate (RHR) and organizational strategy in working memory performance. Gender effect seems to be significant in physical and physiological differences. Regression analyses revealed a relevant contribution of study institution and sleep time on RCFT Copy score; RCFT Memory predicted by drawing from memory strategy, RHR, periodic medication use and marital status.
Źródło:
Acta Neuropsychologica; 2022, 20(1); 35-51
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NSS test of structural steel corrosion
Autorzy:
Odrobiňák, J.
Gocál, J.
Jošt, J.
Powiązania:
https://bibliotekanauki.pl/articles/131677.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
Tematy:
corrosion of steel
neutral salt spray test
corrosion rate
korozja stali
test neutralnego natryskiwania solą
szybkość korozji
Opis:
Corrosion of structural steel represents one of the most significant degradation effects on the reliability and durability of steel bridges. Relevant data needed for good protection of steel structures can only be reliably derived from long-term measurements. For acceleration of corrosion process, measurement in the corrosion chambers can be utilised. The article summarized the results of experimental measurements of corrosion losses carried out on 30 specimens of structural steel corrosion in the test chamber during 140 days. The environment in the chamber simulates the conditions in which, generally, several-day period in the chamber corresponds to either months or even years of outdoor exploitation. Discussion focused on the results interpretation to corrosion progress in real conditions is given, as well. The obtained measurement data should be used to refine the input data for corrosion maps in Slovakia. The presented results are part of a research project focused on measuring corrosive losses of structural steel in situ and as well as in laboratory conditions.
Źródło:
Roczniki Inżynierii Budowlanej; 2017, 17; 7-14
1505-8425
Pojawia się w:
Roczniki Inżynierii Budowlanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of nitrification rate test procedure on results in activated sludge tests
Wpływ metodyki pomiarów szybkości nitryfikacji osadu czynnego na uzyskiwane wyniki
Autorzy:
Miodoński, S.
Muszyński-Huhajło, M.
Rucka, K.
Powiązania:
https://bibliotekanauki.pl/articles/125744.pdf
Data publikacji:
2018
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
wastewater treatment
nitrification
nitrification rate tests
oczyszczanie ścieków
nitryfikacja
test szybkości nitryfikacji
Opis:
Nitrification is one of the fundamental biological processes in wastewater treatment and key element of nitrogen removal processes. It is not only used in traditional way of treatment with denitrification, but also in advanced processes for dewatering liquor side-stream treatment technologies. Like other biological processes, nitrification effectivity may be affected by number of factors such as amount of nitrifiers, substrate and oxygen availability and possible presence of inhibitors. According to these facts, only way to gain information about process dynamics is analytical nitrification rate test performance. Available guidelines focus on test conditions and analytical tools that should be used without any advice for number of results required to estimate accurate nitrification rate. High number of results needed in single nitrification rate test reflects in higher efforts and test costs. In this paper, over 100 nitrification rate tests results were analysed. Tests were performed in recent years on many wastewater treatment plants in Poland on activated sludge from different processes from main and side-stream treatment installations, where full or partial nitrification were used as a way of N-removal. Created database was used to define how big impact on overall nitrification rate has number and interval of results in performed test.
Nitryfikacja, jako jedna z podstawowych przemian azotu w przyrodzie, odgrywa również istotną rolę w technologii oczyszczania ścieków. Podobnie jak pozostałe procesy biochemiczne, istnieje szereg czynników mogących w sposób niekorzystny wpływać na jego przebieg. Jedną z metod monitoringu efektywności procesu jest wykonywanie testów szybkości nitryfikacji, polegających na monitoringu analitycznym wybranych form azot i określeniu ich zmienności w czasie. W celu określenia wpływu czasu trwania testu i częstotliwości wykonywania oznaczeń przeanalizowano wyniki ponad 100 testów szybkości nitryfikacji. Bazowe dane pochodziły z prac prowadzonych na rzeczywistych obiektach z tradycyjną nitryfikacją-denitryfikacją, jak również w układach do skróconej i częściowej nitryfikacji odcieków po odwadnianiu osadów.
Źródło:
Proceedings of ECOpole; 2018, 12, 1; 41-49
1898-617X
2084-4557
Pojawia się w:
Proceedings of ECOpole
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 30

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies