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Wyświetlanie 1-15 z 19
Tytuł:
Experimental investigation on elevated water tanks with base isolation – response spectrum approach
Autorzy:
Vimal, Paul P. A.
Regin, Joseph D. J.
Jinu, Gowthami T. R.
Chettiar, Chembakaraman G.
Powiązania:
https://bibliotekanauki.pl/articles/1839602.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
response spectrum
base isolation
natural time period
base shear
spectral
acceleration
Opis:
Elevated water tanks in an empty condition, though not important in structural design, becomes an important problem in seismic design. The objective of the present research is to investigate the elevated water tanks in empty and in filled conditions and to emphasize the importance of seismic response. Four elevated tanks with various parameters are selected for seismic analysis with the base isolation technique. It is found out that empty tanks are highly vulnerable to earthquake effects, whereas filled tanks can be mitigated by providing base isolation. A simple experimental investigation has also been carried out to validate the analytical results.
Źródło:
Journal of Theoretical and Applied Mechanics; 2020, 58, 4; 885-899
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigating the effectiveness of the flipped classroom in an introductory programming course
Autorzy:
Souza, Manoj Joseph D
Rodrigues, Paul
Powiązania:
https://bibliotekanauki.pl/articles/2012135.pdf
Data publikacji:
2015-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
flipped classroom
programming self-efficacy
academic performance
introductory programming
Opis:
A flipped classroom is a teaching-learning environment in which students self-learn content by watching video lectures outside of the classroom and engage in learner-centered activities in the classroom with the guidance of an instructor. Earlier research into programming education has shown that students in the traditional classroom find introductory programming courses hard. This experimental study compared the effectiveness of a flipped classroom (experimental group, N=48) with a traditional classroom (control group, N=52) in two areas: 1. programming self-efficacy; and 2. academic performance. The results show that the students in the flipped classroom increased programming self-efficacy and achieved higher grades.
Źródło:
The New Educational Review; 2015, 40; 129-139
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of Low–power 4-bit Flash ADC Using Multiplexer Based Encoder in 90nm CMOS Process
Autorzy:
Shylu Sam, D. S.
Sam Paul, P.
Jeba Jingle, Diana
Mano Paul, P.
Samuel, Judith
Reshma, J.
Sudeepa, P. Sarah
Evangeline, G.
Powiązania:
https://bibliotekanauki.pl/articles/2124770.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
flash ADC
low power
dynamic comparator
encoder
Opis:
This work describes a 4-bit Flash ADC with low power consumption. The performance metrics of a Flash ADC depend on the kind of comparator and encoder used. Hence openloop comparator and mux-based encoder are used to obtain improved performance. Simulation results show that the simulated design consumes 0.265mW of power in 90nm CMOS technology using cadence-virtuoso software. The circuit operates with an operating frequency of 100MHz and a supply voltage of 1V.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 3; 565--570
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dosimetry of 131 I for Occupational Radiation Workers by Whole Body Counting System
Autorzy:
Rahman, M. S.
Haydar, M. A.
Patwary, M. K. A.
Shome, S. M.
Paul, S.
Paul, D.
Meaze, A. K. M. M. H.
Powiązania:
https://bibliotekanauki.pl/articles/411910.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Internal Dosimetry
Whole Body Counter
IMBA
131I
Opis:
Internal radiation dosimetry of occupational radiation workers due to inhalation of 131 I during maintenance at iodine 131 I hot cell of Radioisotope Production Division (RIPD) of Bangladesh Atomic Energy Commission have been performed with Whole Body Counter (WBC) containing two large size NaI detector. The contaminated radioactivity of the radiation workers by 131 I was immediately conducted using a WBC (CANBERRA, FASTSCAN model 2250) and counting was repeated again a few days later. The performance of whole body counter was checked by CANBERRA transfer phantom (model 2257) with a mixed source (20 ml vial). The intake was calculated by Apex-Invivo counting software and then corresponding dose in thyroid were estimated by using Integrated Modules for Bioassay Analysis (IMBA) Professional Plus code modules. The body activity due to intake of 131 I and the total effective and equivalent dose in thyroid were also estimated and discussed.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 20, 1; 21-27
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Long wavelength type-II superlattice barrier infrared detector for CubeSat hyperspectral thermal imager
Autorzy:
Rafol, Sir B.
Gunapala, Sarath D.
Ting, David Z.
Soibel, Alexander
Khoshakhlagh, Arezou
Keo, Sam A.
Pepper, Brian J.
Hill, Cory J.
Maruyama, Yuki
Fisher, Anita M.
Sood, Ashok
Zeller, John
Wright, Robert
Lucey, Paul
Nunes, Miguel
Flynn, Luke
Babu, Sachidananda
Ghuman, Parminder
Powiązania:
https://bibliotekanauki.pl/articles/2204204.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
type-II superlattice
focal plane array
infrared detector
quantum efficiency
noise equivalent difference temperature
dark current density
anti-reflective coating
Opis:
The hyperspectral thermal imaging instrument for technology demonstration funded by NASA’s Earth Science Technology Office under the In-Space Validation of Earth Science Technologies program requires focal plane array with reasonably good performance at a low cost. The instrument is designed to fit in a 6U CubeSat platform for a low-Earth orbit. It will collect data on hydrological parameters and Earth surface temperature for agricultural remote sensing. The long wavelength infrared type-II strain layer superlattices barrier infrared detector focal plane array is chosen for this mission. With the driving requirement dictated by the power consumption of the cryocooler and signal-noise-ratio, cut-off wavelengths and dark current are utilized to model instrument operating temperature. Many focal plane arrays are fabricated and characterised, and the best performing focal plane array that fulfils the requirements is selected. The spectral band, dark current and 8-9.4 μm pass band quantum efficiency of the candidate focal plane array are: 8-10.7 μm, 2.1∙10ˉ⁵ A/cm², and 47%, respectively. The corresponding noise equivalent difference temperature and operability are 30 mK and 99.7%, respectively. Anti-reflective coating is deposited on the focal plane array surface to enhance the quantum efficiency and to reduce the interference pattern due to an absorption layer parallel surfaces cladding material.
Źródło:
Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144569
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Katyń : stalinowska masakra i tryumf prawdy
Autorzy:
Paul, Allen.
Współwytwórcy:
Kunert, Zofia. Opracowanie
Kalicki, Włodzimierz (1955- ). Recenzja
Gelènzowski, Marek. Recenzja
Pietrzak, Anna. Recenzja
(MF). Komentarz
(a.d.). Komentarz
Data publikacji:
2006
Wydawca:
Warszawa : Świat Książki -- Bertelsmann Media : Rada Ochrony Pamięci Walk i Męczeństwa
Tematy:
Egzekucja polskich oficerów w Katyniu recenzja
Jeńcy wojenni polscy ZSRR 1939-1940 r. recenzja
Opis:
Tyt. oryg.: "Katyń : Stalin's massacre and the seeds of Polish resurrection" 1996. Publ. klubu Świat Książki nr 5527.
Bibliogr. s. 381-385. Indeks.
Rec.: Katyń po amerykańsku : Amerykanin Allen Paul opisał świat II Rzeczypospolitej i jego katastrofę / Włodzimierz Kalicki.
Rec.: Katyń po amerykańsku / Włodziomierz Kalicki.
Rec.: Katyń oczyma Amerykanina.
Rec.: Stygmat Katynia / Anna Pietrzak.
Omów.: Tajemnica rozkazu nr 13 / (ad).
Omów.: Lekcja Katynia / (MF).
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Exploring the potential of fungal-bacterial consortium for low-cost biodegradation and detoxification of textile effluent
Autorzy:
Lade, H.
Kadam, A.
Paul, D.
Govindwar, S.
Powiązania:
https://bibliotekanauki.pl/articles/204834.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fungal-bacterial consortium
wheat bran
textile effluent
decolorization
biodegradation
detoxification
Opis:
In the present study, the enrichment and isolation of textile effluent decolorizing bacteria were carried out in wheat bran (WB) medium. The isolated bacterium Providencia rettgeri strain HSL1 was then tested for decolorization of textile effluent in consortium with a dyestuff degrading fungus Aspergillus ochraceus NCIM 1146. Decolorization study suggests that A. ochraceus NCIM 1146 and P. rettgeri strain HSL1 alone re moves only 6 and 32% of textile effluent American Dye Manufacturing Institute respectively in 30 h at 30 ±0.2°C of microaerophilic incubation, while the fungal-bacterial consortium does 92% ADMI removal within the same time period. The fungal-bacterial consortium exhibited enhanced decolorization rate due to the induction in activities of catalytic enzymes laccase (196%), lignin peroxidase (77%), azoreductase (80%) and NADH-DCIP reductase (84%). The HPLC analysis confirmed the biodegradation of textile effluent into various metabolites. Detoxification studies of textile effluent before and after treatment with fungal-bacterial consortium revealed reduced toxicity of degradation metabolites. The efficient degradation and detoxification by fungal-bacterial consortium pre-grown in agricultural based medium thus suggest a promising approach in designing low-cost treatment technologies for textile effluent.
Źródło:
Archives of Environmental Protection; 2016, 42, 4; 12-21
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconditional federal transfers and state government spending: The flypaper effect in Nigeria and South Africa
Autorzy:
Isik, Abdurrahman
Golit, Peter D.
Terhemba Iorember, Paul
Powiązania:
https://bibliotekanauki.pl/articles/23942799.pdf
Data publikacji:
2023-11-10
Wydawca:
Fundacja Naukowa Instytut Współczesnych Finansów
Tematy:
unconditional federal transfers
flypaper effect
state spending
two-step system
generalized method of moments
Nigeria
South Africa
Opis:
The flypaper effect is undoubtedly among the most interesting concepts in subnational government spending behavior. This study is the first attempt to provide empirical evidence on the existence of the flypaper effect in the two largest economies in Sub-Saharan Africa: Nigeria and South Africa. Using the two-step system generalized method of moment’s estimator, our results show that the flypaper effect exists for both state and provincial governments in Nigeria and South Africa. Provincial governments in South Africa are found to be more responsive to positive changes in unconditional federal transfers than state governments in Nigeria. We therefore recommend sensitization on the receipt and disbursement of unconditional federal transfers. This will help reduce the illusion or information asymmetry about the use of unconditional federal transfers.
Źródło:
Modern Finance; 2023, 1, 1; 99-115
2956-7742
Pojawia się w:
Modern Finance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspergillus niger, a dominant phylloplane coloniser, influences the activity of defense enzymes in Solanum lycopersicum
Autorzy:
Goswami, S.
Paul, P.K.
Sharma, P.D.
Powiązania:
https://bibliotekanauki.pl/articles/2084798.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Aspergillus niger
phylloplane
peroxidase
phenylalanine ammonia lyase
polyphenol oxidase
Solanum lycopersicum
tyrosine ammonia lyase
Opis:
Phylloplane microbes have been studied as strategic tools in management against plant pathogens. Non-pathogenic bacteria and fungi have been applied as crop protectants against various plant diseases. The present study aimed at evaluating the potentiality of Aspergillus niger spores in altering the activity of four key enzymes related to defense in tomato. The experiment was designed such that two groups of 50 tomato plants were considered: group 1 – sprayed with autoclaved distilled water (control) and group 2 – sprayed with A. niger spores. Spraying was carried out under aseptic conditions. The experimental parameters included analysis of the activity of peroxidase (POX), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL) and tyrosine ammonia lyase (TAL) as well as expression of POX and PPO isoforms. The results demonstrated an inductive effect of A. niger on the activity of POX, PPO, PAL and TAL. Enhanced expression of POX and PPO isoforms was also observed. The results indicated that A. niger can be considered probiotic for the management of tomato against its phytopathogens.
Źródło:
Journal of Plant Protection Research; 2019, 59, 4; 512-518
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Status of multi-wafer production MBE capabilities for extended SWIR III-V epi materials for IR detection
Autorzy:
Fraser, Everett D.
Shao, Jiayi
Frensley, Paul W.
Barnes, Beau D.
Clark, Kevin P.
Kao, Yung-Chung
Pinsukanjana, Paul R.
Powiązania:
https://bibliotekanauki.pl/articles/2204203.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
extended shortwave
GaSb
InP
detector
pn-CBIRD
Opis:
The authors report two approaches, the first based on growth of lattice matched InGaAs/GaAsSb superlattice on InP substrate with tunable bandgap in the 2 to 3 μm range. The second approach is based on bulk random alloy InGaAsSb, which is tunable from 1.7 μm to 4.5 μm and lattice matched to the GaSb lattice constant. In each case, detector structures were fabricated and characterised. The authors have assessed the performance of these materials relative to commercially available extended short wave infrared devices through comparison to IGA-Rule 17 dark current performance level. A complementary barrier structure used in the InGaAsSb design showed improved quantum efficiency. The materials compare favourably to commercial technology and present additional options to address the challenging extended short wave infrared spectral band.
Źródło:
Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144571
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toxic alveolitis after inhalation of a water repellent
Autorzy:
Epping, Guido
Van Baarlen, Joop
Van Der Valk, Paul D.
Powiązania:
https://bibliotekanauki.pl/articles/2185379.pdf
Data publikacji:
2011-12-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
water repellent
toxic alveolitis
acute interstitial pneumonitis
broncho-alveolar lavage
Oil-Red-O-stain
Opis:
Inhalation of fluorocarbon polymers can cause pulmonary toxicity. Although multiple cases of lung injury have been reported, cellular characterization of the associated alveolitis occurring acutely after inhalation is limited. We report the case of a previously healthy woman who presented at our Emergency Department with an acute pneumonitis following inhalation of a fluorocarbon polymer-based rain-proofing spray. Bronchoalveolar lavage (BAL) performed shortly after the presentation showed an elevated total cell count, with a high proportion of neutrophils (58%) and eosinophils (9%). In addition, a lipid stain (Oil-Red-O-stain) showed a high level of lipid laden macrophages, a marker that could reflect a direct toxic effect of the spray on alveolar cells. The patient made a full recovery after four days of in-hospital observation with supportive care.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2011, 24, 4; 409-413
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 19

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