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Tytuł:
Evaluation of the effects of antibiotics on cytotoxicity of EGFP and DsRed2 fluorescent proteins used for stable cell labeling
Autorzy:
Zakrzewska, Karolina
Samluk, Anna
Pluta, Krzysztof
Pijanowska, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/1039220.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
stable fluorescent labeling
whole-cell labeling
fluorescent protein cytotoxicity
Opis:
The use of fluorescent markers has proven to be an attractive tool in biological imaging. However, its usefulness may be confined by the cytotoxicity of the fluorescent proteins. In this article, for the first time, we have examined an influence of the antibiotics present in culture medium on cytotoxicity of the EGFP and DsRed2 markers used for whole-cell labeling. Results showed that doxycycline negatively affected albumin synthesis in DsRed2-expressing hepatoma cells, and that both hepatoma cells and human skin fibroblasts, labeled with this protein, were characterized by the lowered growth rates. Thus, the cytotoxic effect of fluorescent markers depends on both protein used for cell labeling and on growth conditions that may cause cell stress.
Źródło:
Acta Biochimica Polonica; 2014, 61, 4; 809-813
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New fluorescent imaging technics in gastrology
Autorzy:
Sosna, Barbara
Bartusik-Aebisher, Dorota
Cieślar, Grzegorz
Kawczyk-Krupka, Aleksandra
Latos, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2040160.pdf
Data publikacji:
2021-09-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
diagnostics
fluorescent imaging
gastrology
Opis:
Introduction. There is a need to develop a new imaging technique in medicine. Gastroenterology is the branch of medicine focused on the digestive system and its disorders therefore for this branch is needed to detect all problems affecting the gastrointestinal tract. Aim. The aim of this article is to complete discuss the possibility of the new fluorescent imaging technics in gastrology to use innovative screening to identify individuals at an early stage. Material and methods. We discuss here imaging techniques such as include x-rays, computed tomography, scans, and magnetic resonance imaging in gastrology. Spectroscopy is the study of the formation and interpretation of spectra resulting from the interaction of all types of radiation on matter understood as a community of atoms and molecules. Various spectroscopic techniques are obtained by combining different types of radiation with different ways of its interaction with the test sample. They provide the opportunity to obtain detailed information about the tested substance – from its atomic composition, through its chemical structure, to its surface structure. Analysis of the literatue. The tissue fluorescence spectrum can be obtained by: (1) autofluorescence, or natural or primary fluorescence, i.e. by direct irradiation of the tissue with laser radiation (laser-induced fluorescence – LIF) and (2) photodynamic diagnosis (PDD), where spectrum analysis is preceded by systemic or local administration of the photosensitizer. Conclusion. The use of fluorescence imaging in colon cancer patient has potential to improve quality of treatment and diagnosis.
Źródło:
European Journal of Clinical and Experimental Medicine; 2021, 3; 251-254
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of a carbazole derivative as a spectroscopic fluorescent probe for real time monitoring of cationic photopolymerization
Autorzy:
Ortyl, J.
Galica, M.
Popielarz, R.
Bogdał, D.
Powiązania:
https://bibliotekanauki.pl/articles/778445.pdf
Data publikacji:
2014
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
spectroscopic fluorescent probe
FPT
fluorescence
carbazole
photopolymerization
Opis:
The performance of 1-(9-ethylcarbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione (1) as a fluorescent probe for the monitoring of cationic photopolymerization processes by Fluorescence Probe Technique (FPT) has been evaluated in comparison with the response of 7-diethylamino-4-methylcoumarin (Coumarin 1) (2). Triethylene glycol divinyl ether and diphenyliodonium hexafluorophosphate were used as an example monomer and a cationic photoinitiator respectively. It has been found that the probe 1 withstands the cationic polymerization conditions and provides correct probe response. 1-(9-ethylcarbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione shifts its fluorescence spectrum with progress of cationic photopolymerization of the monomer, which enables the monitoring of the polymerization progress using the fluorescence intensity ratio measured at two different wavelengths as the progress indicator. By comparing the behavior of 1 and 2, it has been documented that the fluorescence spectrum of probe 1 shows a spectacular hypsochromic shift (Δλ = 33 nm) upon the monomer polymerization, while the shift of 2 is three times smaller (Δλ = 11 nm). Moreover, the sensitivity of probe 1 is more than 2.5-times higher than that of any other probes suitable for monitoring cationic polymerization processes, reported previously. Therefore, application of the carbazole derivative (1) as a new probe for the monitoring of the crosslinking process of coatings cured by cationic photopolymerization has been proposed.
Źródło:
Polish Journal of Chemical Technology; 2014, 16, 1; 75-80
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-destructive tests of lock tongues used in ATR-72 aircraft landing gear based on magnetic method
Autorzy:
Malec, M.
Cieplak, T.
Walczuk, S
Powiązania:
https://bibliotekanauki.pl/articles/102217.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
NDT research
magnetic-fluorescent method
wear and tear
Opis:
The purpose of this work is to highlight the opportunities of using and analyzing process progression of Non-destructive Testing in aeronautical industries and technologies. This paper concentrates on magnetic-fluorescent method, which is used to showcase the practical test of lock tongue installed in ATR-72 aircraft landing gear.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 20; 23-28
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Życie jako kicz. Uwagi o sztuce biologicznej
Autorzy:
Mikołajewska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/1187254.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
kitsch
bio art
life
biotechnology
DNA
fluorescent bunny
Opis:
Bio art is a specific trend of contemporary art practice, where artists adapt solutions offered by biosciences in order to create living works of art. Their actions are a subject to a discussion with dominant voices concerning the significance of such experiments for the fundamental ascertainments concerning what life is, but also for understanding the status of these constructed entities, which thus fur have not existed in nature. Posthumanist discourses such as aesthetics of care, non-anthropocentric aesthetics and zoe-aesthetics are a few examples of this type of reflection. However, is it possible that works, which could be described in terms of kitsch, constitute a solid ground for discussion of this kind? Clement Greenberg has written of kitsch that it is ʻmechanical and operates by formulas. Kitsch is vicarious experience and faked sensations. Kitsch changes according to style, but remains always the same. Kitsch is the epitome of all that is spurious in the life of our times . If kitsch represents everything that is spurious and non-authentic in our life, can we use it in order to make general statements concerning the basis of life? Can we make statements concerning the fundamental problem of life on the basis of projects, which confront us with glow-in-the-dark rabbits or paintings created with genetically modified colorful bacteria? In my paper I would like to refer to these questions on the basis of an artwork that can be classified in terms of kitsch.
Źródło:
Załącznik Kulturoznawczy; 2016, 3; 206-224
2392-2338
Pojawia się w:
Załącznik Kulturoznawczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of fluorescent method in parasitological examination of infested cells
Autorzy:
Dyner, E.
Swiatecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/840756.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
pig
parasite
Sporozoa
fluorescent method
liver
histological change
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of fluorescent markers for homogeneity assessment of grain mixtures based on maize content
Autorzy:
Matuszek, D.B.
Wojtkiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/952659.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
grain mixture
fluorescent
homogeneity
image analysis
ziarno
jednorodność
analiza obrazu
Opis:
The paper presents test results for the assessment of the tracer content in a three-component (green peas, sorghum, maize) feed mixture that is based on the fluorescent method. The homogeneity of mixtures was determined on the basis of the maize content (as the key component), which was treated with fluorescent substance: tinopal, rhodamine B, uranine and eosin. The key components were wet-treated with fluorescent substances with different concentrations. Feed components were mixed in a vertical funnel-flow mixer. 10 samples were collected from each mixed batch. Samples were placed in a chamber equipped with UV light and, then, an image recorded as BMP file was generated. The image was analysed by means of the software programme Patan. On the basis of the an alyses conducted, data on the maize content marked with a fluorescent marker were obtained. Additionally, the content of the key component was determined in a conventional =using an analytical scale. Results indicate the possibility of using this method for homogeneity assessment of the three-component grain mixture. From these tests, fluorescent substances that can be applied in the case of maize as a key component, together with their minimum concentrations, were identified: tinopal 0.3%, rhodamine B 0.001%.
Źródło:
Chemical and Process Engineering; 2017, 38, 4; 505-512
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Culturable endophytic Pseudomonas fluorescens Z1B4 isolated from Zanthoxylum alatum Roxb. with stress-tolerance and plant growth-promoting potential
Autorzy:
Vyas, P.
Kaur, R.
Powiązania:
https://bibliotekanauki.pl/articles/2096416.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antagonism
endophytes
fluorescent Pseudomonas
phosphate solubilization
medicinal plants
Northeast India
Opis:
Endophytes are an important constituent of sustainable agriculture because of their ability to produce a large number of agriculturally important metabolites. A salt-tolerant fluorescent green pigment-producing endophytic bacterium was isolated on 2.5% NaCl-supplemented nutrient agar from the leaf samples of Zanthoxylum alatum Roxb. The isolate Z1B4 was identified as Pseudomonas fluorescens based on morphological features, fatty acid methyl ester analysis, biochemical tests, and 16S rRNA gene sequencing. P. fluorescens Z1B4 showed positive results for tricalcium phosphate solubilization; 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity; and production of auxins, siderophores, hydrogen cyanide, and ammonia. P. fluorescens Z1B4 also showed strong antagonistic activity against Curvularia lunata (MTCC 283), Fusarium verticillioides (MTCC 3322), and Alternaria alternata (MTCC 1362) and exhibited stress tolerance to a wide range of temperature and pH and concentrations of NaCl and calcium salts. Under natural conditions, following inoculation with the isolate Z1B4, a significant increase in the growth of pea and maize test plants in pots was observed compared to that of uninoculated control plants. The rifampicin-resistant mutant Z1B4Rif was recovered from the roots, shoots, and leaves of the test plants, indicating that the isolated endophytic bacterium can grow well within different plant tissues. The present study indicated that the endophytic bacterium P. fluorescens Z1B4 can be used as a bacterial inoculant in stressed environments for sustainable agriculture.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 3; 285-295
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of transfection conditions of CD34+ hematopoietic cells derived from human umbilical cord blood
Autorzy:
Ołdak, Tomasz
Kruszewski, Marcin
Machaj, Eugeniusz
Gajkowska, Agnieszka
Pojda, Zygmunt
Powiązania:
https://bibliotekanauki.pl/articles/1043723.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
CD34+ cells
umbilical cord blood
green fluorescent protein
transfection
Opis:
Human umbilical cord blood is frequently used as a source of transplantable hematopoietic cells and more recently as a target of gene therapy - a new approach for treatment of various disorders. The aim of our study was optimisation of the transfection conditions of cord blood-derived CD34+ hematopoietic cells. Mononuclear cells fraction was isolated from cord blood samples by density gradient centrifugation. Subsequently, CD34+ hematopoietic cells were separated on immunomagnetic MiniMACS columns. Pure population of CD34+ cells was incubated in a serum free medium supplemented with thrombopoietin, stem cell factor and Flt-3 ligand for 48 h and then transfected with plasmid DNA carrying the enhanced version of green fluorescent protein (EGFP) as a reporter gene. We studied the influence of various pulse settings and DNA concentrations on the transfection efficiency, measured by flow cytometry as the fluorescence of target cells due to the expression of EGFP. The optimal settings were as follows: 4 mm cuvette, 1600 μF, 550 V/cm, and 10 μg of DNA per 500 μl. With these settings we obtained a high transfection frequency (41.2%) without a marked decrease of cell viability. An increase of the pulse capacitance and/or of DNA concentration resulted in a greater electroporation efficiency, but also in a decrease of cell viability. In conclusion, the results described here allow one to recommend electroporation as an efficient method of gene delivery into CD34+ hematopoietic cells derived from human umbilical cord blood.
Źródło:
Acta Biochimica Polonica; 2002, 49, 3; 625-632
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of alkali processing for the recycling of rare earth values from spent fluorescent lamps
Autorzy:
Shukla, Neha
Tanvar, Himanshu
Dhawan, Nikhil
Powiązania:
https://bibliotekanauki.pl/articles/1449193.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fluorescent lamps
rare earth elements
activation energy
recovery
cerium
terbium
Opis:
Phosphor samples collected after crushing and sieving of discarded fluorescent lamps comprise approximately 31 % rare earth elements in the form of $Y_{1.90}Eu_{0.10}O_3$, $Al11Ce_{0.67}MgO_{19}Tb_{0.33}$, and $Al_{10.09}Ba_{0.96}Mg_{0.91}O_{17}$: $Eu^{2+}$ phase. Direct leaching and mechanical activation assisted leaching are incapable of recovering $Ce$, $Tb$ values from the $Al_{11}Ce_{0.67}MgO_{19}Tb_{0.33}$ phase. Heat treatment with $NaOH$ was found successful for dissociation of $Ce$, $Tb$ phase via substitution of rare-earth ion by $Na^+$ ion to form rare earth oxide and water-soluble $NaAlO_2$. $Y$, $Eu$, $Ce$, and $Tb$ values were recovered from heattreated mass in a two-step leaching process followed by recovery from the leach solution by oxalic acid precipitation. Over 95 % extraction rate was attained after heat treatment at 400 °C with 150 wt-% $NaOH$ for 1 h. It was found that $Y$, $Eu$ containing phase does not take part in the heat treatment process whereas the $Ce$, $Tb$ phase undergoes a solid-state chemical reaction with $NaOH$ via product layer diffusion model with 41.5 kJ/mol activation energy. Approximately 15 g mixed oxide (purity >95 %) of $Y$ (79 %), $Eu$ (7 %), $Ce$ (5 %), and $Tb$ (4 %) could be recovered from 100 units of discarded FLs. Microwave treatment of phosphor and $NaOH$ (50 wt-%) yielded approximately 42 % $Y$, 100 % $Eu$, 65 % $Ce$, and 70 % Tb recovery in just 5 min. Approximately 9 g of REO and 5 g of cerium enriched leach residue were recovered from the microwave route within 5 min and depicted high microwave potential application in the recovery of $Ce$ and $Tb$ values from waste phosphor sample.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 4; 710-722
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lumicyano – fluorescencyjny cyjanoakrylan
Lumicyano – fluorescent cyanoacrylate
Autorzy:
Rogoża, Ewa
Drzewiecka, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2069808.pdf
Data publikacji:
2017
Wydawca:
Centralne Laboratorium Kryminalistyczne Policji
Tematy:
Lumicyano
cyjanoakrylan
ślady linii papilarnych
fluorescencja śladów
cyanoacrylate
fingerprints
fluorescent traces
Opis:
Lumicyano jest nowym środkiem do ujawniania śladów linii papilarnych na podłożach niechłonnych i semiporowatych. Można go stosować w procesie wizualizacji śladów – zamiast cyjanoakrylanu i barwników fluorescencyjnych (w przypadku podłoży niechłonnych) lub cyjanoakrylanu i proszków daktyloskopijnych (w przypadku podłoży semiporowatych). Podczas ujawniania śladów linii papilarnych wykorzystuje się tradycyjne komory cyjanoakrylowe. W niniejszej pracy sprawdzono efektywność działania Lumicyano w odniesieniu do dotychczas stosowanych w praktyce laboratoryjnej sekwencji technik badawczych: cyjanoakrylanu i Basic Yellow 40 oraz cyjanoakrylanu i proszku daktyloskopijnego Black Ruby.
Lumicyano is a new reagent used to reveal fingermarks on non-porous and semi-porous surfaces. It can be applied in trace visualization process instead of cyanoacrylate and fluorescent dyes (in the case of nonabsorbent surfaces) or cyanoacrylate and dactyloscopic powders (in the case of semi-porous surfaces). Fingerprints are revealed in the traditional cyanoacrylate fuming chambers. The present work, the effectiveness of Lumicyano was investigated, in comparison to previously used sequences of laboratory techniques, i.e. cyanoacrylate + Basic Yellow 40 and cyanoacrylate + Black Ruby dactyloscopic powder.
Źródło:
Problemy Kryminalistyki; 2017, 297; 44-49
0552-2153
Pojawia się w:
Problemy Kryminalistyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An 11-Year-Old Boy with Down Syndrome Phenotype and Partial Duplication in 21 Q11.2-Q21 Region
Autorzy:
CHOMIAK, PAWEŁ J.
JANECZKO, MAGDALENA
Powiązania:
https://bibliotekanauki.pl/articles/1034074.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
DOWN SYNDROME
HR-CGH
PARTIAL DUPLICATION
QUANTITIVE FLUORESCENT REAL TIME PCR
Opis:
We report a clinical case of an 11-year-old boy with de novo partial duplication of chromosome 21st pair and some clinical features of Down syndrome. Using hr – CGH method (high resolution Comparative Genomic Hybridization) we detected a quantitative change (a duplication) in 21q21 – q11.2 region. To confirmed the results of hr-CGH analysis we used Quantitative Fluorescent Real Time PCR method with four primers for two different genes located in duplication region.
Źródło:
Zeszyty Naukowe Towarzystwa Doktorantów Uniwersytetu Jagiellońskiego. Nauki Ścisłe; 2011, 3; 53-57
2082-3827
2084-977X
Pojawia się w:
Zeszyty Naukowe Towarzystwa Doktorantów Uniwersytetu Jagiellońskiego. Nauki Ścisłe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of selected parameters of compact fluorescent lamps during their long-term operation
Autorzy:
Tabaka, Przemyslaw
Rózga, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/220694.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lighting technology
compact fluorescent lamp
energy efficiency
light source
luminous flux
Opis:
This article is focused on considerations based on experimental studies concerning changes of selected parameters of identical compact fluorescent lamps (CFLs) intended for use in buildings during their operation. The studies constituted a long-term experiment whose goal was an evaluation of selected operating parameters of the CFLs in terms of meeting the requirements set out in the specified regulations as well as the issue of marking the lamps with the energy efficiency class. The measurements were performed with the authors’ experimental setup consisting of original equipment designed and made especially for the purpose of the measurements. The studies covered registration of the luminous flux as well as selected electrical parameters such as active power, current and the power factor during the so-called “start-up time” and operation time equal to 100 h, 500 h, 1000 h, 2000 h, etc. with a 1000 h step. The studies were finished with the moment of natural burnout of the CFLs tested. The results showed that the biggest drawback of CFLs is lack of preservation of the required time to reach 60% of the stabilized luminous flux just after short time of lamp operation. Similarly when assessing the conformity of the parameters declared by the manufacturer that have been verified, it can be stated that they are true only at the initial stage of lamp operation.
Źródło:
Metrology and Measurement Systems; 2020, 27, 3; 541-557
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Issledovanije kharakteristik sovremennykh ehlektricheskikh istochnikov sveta na primere kompaktnykh ljuminescentnykh lamp
Research the parameters of modern light sources on the example of compact fluorescent lamps
Autorzy:
Khimka, S.
Goshko, M.
Powiązania:
https://bibliotekanauki.pl/articles/76404.pdf
Data publikacji:
2015
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
light source
compact fluorescent lamp
modern parameter
lighting
energy consumption
technical parameter
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 4
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wyższe harmoniczne prądu generowane przez kompaktowe fluorescencyjne źródła światła zasilane napięciem sinusoidalnym i odkształconym
Current higher harmonics generated by compact fluorescent lamps supplied with sinusoidal and distorted voltage
Autorzy:
Kuryło, K.
Sabat, W.
Klepacki, D.
Powiązania:
https://bibliotekanauki.pl/articles/151471.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
THD
kompaktowe fluorescencyjne źródła światła
harmoniczne prądu
harmonic distortion
compact fluorescent lamp
Opis:
Tematyka publikacji dotyczy problemu generowania wyższych harmonicznych prądu przez kompaktowe fluorescencyjne źródła światła. W opracowaniu przeanalizowano zmiany poziomu harmonicznych prądu generowanych przez tego typu odbiorniki w sytuacji gdy zasilano je napięciem sinusoidalnym i odkształconym. Do generacji przebiegów napięcia zasilającego w trakcie badań Kwykorzystano, stabilne programowalne źródło zasilania NetWave firmy EMTest. Uzyskane dzięki temu urządzeniu napięcia miały stabilne niezmienne parametry w czasie. trwania badań.
The problem of generation of current higher harmonics by compact fluorescent light sources is described in this paper. The above-mentioned light sources were supplied by a sinusoidal voltage with THD equal to 0.1% then by a distorted voltage with THD equal to 6.58%. Both voltages were generated by a NetWave device from the EMTest. Such equipment guarantees the stable parameters during tests. The compact fluorescent lamps (9 W of nominal power) were used in the conducted tests. They were from three different manufacturers marked as A, B and C. The specifications of the tested lamps are presented in Tab. 1. The characteristic of the examined fluorescent lamps was included in the paper for two cases. In the first one, each lamp was supplied by a sinusoidal voltage. The obtained results are presented in Tabs. 2 and 3 as well as in Fig. 4. The next step was group operation of lamps (A1, A1+A2 and A1+A2+A3) manufactured by the same A factory and (A1+B1+ C1) manufactured by A, B and C factories. The results of investigations are presented in Tab. 4 and Figs. 5 and 6. In the second case, the same configurations of fluorescent lamps were supplied by a distorted voltage. The results are illustrated in Tabs. 5, 6 and 7 as well as in Figs. 7, 8 and 9.
Źródło:
Pomiary Automatyka Kontrola; 2014, R. 60, nr 8, 8; 622-625
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
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