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    Wyświetlanie 1-8 z 8
    Tytuł:
    Assessment of Heterogeneous Road Traffic Noise in Nagpur
    Autorzy:
    Lokhande, S. K.
    Pathak, S. S.
    Kokate, P. A.
    Dhawale, S. A.
    Bodhe, G. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/176717.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    traffic noise
    FHWA
    Federal Highway Administration
    TNM
    Traffic Noise Model
    Prediction Model
    LAeq,T
    a-weighted time-average sound level
    noise pollution
    Opis:
    The objective of the study is to assess the noise scenario and evaluate prediction model for heterogeneous traffic conditions. In the past few years, road traffic of Nagpur has increased significantly due to the rapid increase in the number of vehicles. Noise levels are monitored at six different squares, characterized as interrupted traffic flow due to traffic signals, high population density and heavy traffic where the major sources of noise are engines, exhausts, tires interacting with the road, horns, sound of gear boxes, breaks, etc. The A-weighted time-average sound levels (LAeq, T) are measured at the different time of day during peak and off-peak traffic hours. To assess the traffic noise more precisely, the noise descriptors such as L10, L50, L90, LAeq, T, TNI (Traffic Noise Index), NPL (Noise Pollution Level) and NC (Noise Climate) are used. In the present study, the Federal Highway Administration (FHWA) noise prediction model is used for prediction of noise levels and it is observed that one-hour duration measured LAeq, T ranged from 71 to 76 dB(A) and 71.6 to 76.3 dB(A) during peak and off peak hours respectively. Due to the heavy traffic the peak hour Sound Exposure Levels (LAE) at all locations are exceeding permissible limit of 70 dB(A) prescribed by the World Health Organization (W.H.O). Off-peak traffic hour noise levels are within permissible limit except at two locations, Jagnade and HB town square. Significant correlation was obtained when best fit lines generated between measured and predicted values gives R2 of 0.455 for all time intervals. Chi-Square test (X2) was also computed to investigate the noise levels at different squares. The results show that the inhabitants of Nagpur city are exposed to high transportation noise during daytime.
    Źródło:
    Archives of Acoustics; 2018, 43, 1; 113-121
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Appraisal of Noise Level Dissemination Surrounding Mining and Industrial Areas of Keonjhar, Odisha: a Comprehensive Approach Using Noise Mapping
    Autorzy:
    Lokhande, S. K.
    Dhawale, S. A.
    Pathak, S. S.
    Gautam, R.
    Jain, M. C.
    Bodhe, G. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/176752.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    noise mapping
    noise prediction
    predictor LimA
    mining
    GIS
    Opis:
    Noise mapping is a well-established practice among the European nations, and it has been follow for almost two decades. Recently, as per guidelines of the Directorate General of Mines Safety (DGMS), India, noise mapping has been made mandatory in the mining expanses. This study is an effort to map the noise levels in nearby areas of mines in the northern Keonjhar district. The motive of this study is to quantify the existing A-weighted time-average sound level (LAeq, T) in the study area to probe its effects on the human dwellings and noise sensitive areas with the probability of future development of the mines, roads, and industrial and commercial zone. The LAeq, T was measured at 39 identified locations, including industrial, commercial, residential, and sensitive zones, 15 open cast mines, 3 major highways, and 3 haulage roads. With the utilisation of Predictor LimA Software and other GIS tools, the worked out data is mapped and noise contours are developed for the visualisation and identification of the extent and distribution of sound levels across the study area. This investigation discloses that the present noise level at 60% of the locations in silence and residential zone exposed to significantly high noise levels surpasses the prescribed limit of Central Pollution Control Board (CPCB), India. The observed day and night time LAeq, T level of both zones ranged between 43.2–62.2 dB(A) and 30.5–53.4 dB(A), respectively, whereas, the average Ldn values vary between 32.7 and 51.2 dB(A). The extensive mobility of heavy vehicles adjoining the sensitive areas and a nearby plethora of open cast mines is the leading cause of exceeded noise levels. The study divulges that the delicate establishments like schools and hospitals are susceptible to high noise levels throughout the day and night. A correlation between observed and software predicted values gives R2 of 0.605 for Ld, 0.217 for Ln, and 0.524 for Ldn. Finally, the mitigation measure is proposed and demonstrated using a contour map showing a significant reduction in the noise levels by 0–5.3 dB(A).
    Źródło:
    Archives of Acoustics; 2017, 42, 3; 423-432
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Single Ionization of He by High-Energy Proton and Antiproton. A QED Approach
    Autorzy:
    Bhattacharyya, S.
    Pathak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2014235.pdf
    Data publikacji:
    2000-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    34.80.Dp
    82.30.Fi
    Opis:
    We have investigated single ionization of He by fast proton and antiproton using a QED approach. A field theoretical calculation gives the total cross-section of He in single ionization, from which it is seen that the projectile p$\text{}^{+}$ or p$\text{}^{-}$ gives almost the same values of cross-section. We have also compared our results with other theoretical and experimental results available in this context yet. Behaviour of the cross-section at a lower spectrum of projectile energy is discussed.
    Źródło:
    Acta Physica Polonica A; 2000, 98, 4; 335-344
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Social media in managing political advertising : a study of India
    Media społecznościowe w zarządzaniu reklamą polityczną : studium Indii
    Autorzy:
    Safiullah, M.
    Pathak, P.
    Singh, S.
    Anshul, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/405809.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    social media
    election campaign
    Indian politics
    Twitter
    election prediction
    media społecznościowe
    kampania wyborcza
    indyjska polityka
    prognozowanie wyborów
    Opis:
    Social Media has become an important tool of opinion formation in this technology driven age and marketing managers have realised its significance. With political arena behaving like a customer driven market, uses of marketing technologies are increasingly being used for competitive advantage. Social Media has proved to a useful tool. Marketing political parties are evident in the recent election in India. The present paper explores the implication of twitter on political marketing by studying the relationship between tweet followers and vote share gained by political parties taking Delhi Assembly elections 2015 as a case in point. The findings suggest that there is a positive correlation between the volume of tweet and vote share.
    Media społecznościowe w tej erze napędzanej technologią stały się ważnym narzędziem kształtowania opinii i menedżerowie marketingowi zdali sobie sprawę z jej znaczenia. Z areną polityczną zachowującą się jak rynek napędzany klientem, użytkownicy technologii marketingowych są coraz częściej wykorzystywani do przewagi konkurencyjnej. Media społecznościowe okazały się do tego użytecznym narzędziem. Marketingowe partie polityczne są widoczne w ostatnich wyborach w Indiach. Niniejszy artykuł bada wpływ Twittera na marketing polityczny, badając relacje między osobami obserwującymi twittera i udziałem głosów uzyskanych przez partie polityczne, biorące udział w wyborach Zgromadzenia Delhi w 2015. Wnioski sugerują, że istnieje dodatnia korelacja pomiędzy ilością wysyłanych tweetów a udziałem głosów.
    Źródło:
    Polish Journal of Management Studies; 2016, 13, 2; 121-130
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on the effect of coal particle size on biodepyritization of high sulfur coal in batch bioreactor
    Autorzy:
    Singh, S.
    Srichandan, H.
    Pathak, A.
    Gahan, Ch. S.
    Lee, S.
    Kim, D. J.
    Kim, B. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/778523.pdf
    Data publikacji:
    2015
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    biodepyritization
    coal
    pyrite
    stirred tank bioreactor
    Opis:
    The moderate thermophilic mix culture bacteria were used to depyritize the Illinois coal of varying particle sizes (-100 μm, 100-200 μm, +200 μm). Mineral libration analysis showed the presence of pyrite along with other minerals in coal. Microbial depyritization of coal was carried out in stirred tank batch reactors in presence of an iron-free 9K medium. The results indicate that microbial depyritization of coal using moderate thermophiles is an efficient process. Moreover, particle size of coal is an important parameter which affects the efficiency of microbial depyritization process. At the end of the experiment, a maximum of 75% pyrite and 66% of pyritic sulphur were removed from the median particle size. The XRD analysis showed the absence of pyrite mineral in the treated coal sample. A good mass balance was also obtained with net loss of mass ranging from 5-9% showing the feasibility of the process for large scale applications.
    Źródło:
    Polish Journal of Chemical Technology; 2015, 17, 1; 97-102
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Angular Differential Cross-Sections for Electron Transfer in Collisions between Proton and He$\text{}^{+}$(1s) Ions
    Autorzy:
    Bhattacharyya, S.
    Pathak, K.
    Becker, A.
    Faisal, F. H. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1952747.pdf
    Data publikacji:
    1996-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    34.70.+e
    34.40.+n
    Opis:
    Angular differential cross-sections for the formation of H, as a result of electron capture by proton from He$\text{}^{+}$(1s) at the centre-of-mass energies from 4 to 24 keV, are calculated using distorted wave Coulomb-Born approximation. The total interaction potentials in the prior-interaction channel and in the post-interaction channel are considered. Coulomb boundary conditions are taken care of with the proper choice of the perturbation potentials in both the prior and the post channels. A prior-post discrepancy is noted. Existing theoretical results are presented along with the present results.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 6; 1143-1153
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Human resources for forestry in Kazakhstan: current status, potential and problems
    Autorzy:
    Kirillov, V.
    Pathak, A.
    Kabanova, S.
    Stikhareva, T.
    Turumbayev, S.
    Savazova, D.
    Kerteshev, T.
    Rakhimzhanov, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/28407566.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Badawczy Leśnictwa
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2022, 64, 4; 226-244
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control of the propagation of intense laser pulses in gas for laser plasma acceleration
    Autorzy:
    Giulietti, D.
    Cecchetti, C. A.
    Drenska, N. V.
    Faccini, N.
    Gatti, C.
    Gatti, G.
    Giulietti, A.
    Gizzi, L.
    Labate, L.
    Levato, T.
    Martellotti, S.
    Pathak, N.
    Valente, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/147890.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    intense laser pulses
    ultra-short laser pulse
    laser plasma
    plasma acceleration
    Opis:
    The role of the propagation mechanisms of intense and ultra-short laser pulses in gas is presented, as well as the first results of the laser plasma acceleration (LPA) tests at Frascati National Laboratories (INFN), in the frame of NTA-PLASMONX project.
    Źródło:
    Nukleonika; 2012, 57, 2; 221-225
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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