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Wyszukujesz frazę "Srivastava, A.K." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Modelling of regeneration and filtration mechanism in diesel particulate filter for development of composite regeneration emission control system
Autorzy:
Kurien, C.
Srivastava, A. K.
Naudin, J.
Powiązania:
https://bibliotekanauki.pl/articles/140328.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
catalysis
filtration
regeneration
soot
katalizator
filtracja
regeneracja
sadza
Opis:
Pre-treatment techniques employed for exhaust emission control of compression ignition engines were found to reduce the emission levels by small percentage only, failing to meet the required emission regulations. Post-treatment technique including diesel particulate filtration, diesel oxidation catalysis and selective catalytic reduction is found to be an effective solution. While the fuel-based regeneration of diesel particulate filter leads to uncontrolled combustion affecting the durability of the filter. Development of an effective regeneration system is one of the major technical challenges faced by automotive industry for meeting emission norms. A composite regeneration system with the application of microwave energy is proposed in this paper. As an initial phase, a three-dimensional model of the system is developed and its flow analysisis carried out by considering the case of single channel flow. Simulation of the regeneration process is also done by developing a Simulink model. The results of simulation showed that an engine running continuously for a period of 24 hours would require three regenerations.
Źródło:
Archive of Mechanical Engineering; 2018, LXV, 2; 277-290
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigating the role of air-sea forcing on the variability of hydrography, circulation, and mixed layer depth in the Arabian Sea and Bay of Bengal
Autorzy:
Srivastava, A.
Dwivedi, S.
Mishra, A.K.
Powiązania:
https://bibliotekanauki.pl/articles/48693.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
seasonal variability
hydrography
circulation
Arabian Sea
Bengal Bay
general circulation model
Źródło:
Oceanologia; 2018, 60, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impulsively Generated Linear and Non-Linear Alfvén Waves in the Coronal Funnels
Autorzy:
Chmielewski, P.
Srivastava, A.
Murawski, K.
Musielak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1195963.pdf
Data publikacji:
2014-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
96.60.P-
96.60.pc
Opis:
We present simulation results of the impulsively generated linear and non-linear Alfvén waves in the weakly curved coronal magnetic flux-tubes (coronal funnels) and discuss their implications for the coronal heating and solar wind acceleration. We solve numerically the time-dependent magnetohydrodynamic equations to find the temporal signatures of the small and large-amplitude Alfvén waves in the model atmosphere of open and expanding magnetic field configuration with a realistic temperature distribution. We compute the maximum transversal velocity of both linear and non-linear Alfvén waves at different heights of the model atmosphere, and study their response in the solar corona during the time of their propagation. We infer that the pulse-driven non-linear Alfvén waves may carry sufficient wave energy fluxes to heat the coronal funnels and also to power the solar wind that originates in these funnels. Our study of linear Alfvén waves shows that they can contribute only to the plasma dynamics and heating of the funnel-like magnetic flux-tubes associated with the polar coronal holes.
Źródło:
Acta Physica Polonica A; 2014, 125, 1; 158-164
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient soil solarization for weed control in the rain-fed upland rice ecosystem
Autorzy:
Khan, A.R.
Srivastava, R.C.
Ghorai, A.K.
Singh, S.R.
Powiązania:
https://bibliotekanauki.pl/articles/25142.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
environment
soil
ground water
weed competition
crop yield
herbicide
solarization
ecosystem
rainfed upland
weed control
toxic residue
rice
Źródło:
International Agrophysics; 2003, 17, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Drechslera graminea on total soluble proteins and defense enzymes of barley
Autorzy:
Goel, N.
Jaiswal, G.
Srivastava, A.K.
Paul, P.K.
Goel, A.
Powiązania:
https://bibliotekanauki.pl/articles/66670.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
barley
Hordeum vulgare
defense enzyme
Drechslera graminea
peroxidase
phenylalanine lyase
polyphenol oxidase
protein
soluble protein
tyrosine ammonia lyase
Opis:
Barley phylloplane is seriously colonized by Drechslera graminea, the causal agent of leaf stripe disease in the hos. The present study involved the elucidation of alterations induced in the protein content of the host due to Drechslera infection. Naturally growing barley plants were obtained from fields and Drechslera graminea was isolated and identified from diseased plants’ leaves. After identification and preparation of the pure culture, the pathogen was inoculated on plants grown under aseptic and controlled laboratory conditions. Changes in the total soluble cytoplasmic proteins and defense enzymes of the host such as polyphenol oxidase (PPO), peroxidase (POX), phenylalanine lyase (PAL) and tyrosine ammonia lyase (TAL) were observed up to 5 h after inoculation. The results demonstrated a significant effect of the pathogen on the cytoplasmic protein expression of the host as well as in its defense system.
Źródło:
Journal of Plant Protection Research; 2018, 58, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamical analysis of stiffened plates under patch loading
Autorzy:
Srivastava, A. K. L.
Pandey, S. R.
Kumar, A.
Powiązania:
https://bibliotekanauki.pl/articles/265921.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
metoda elementów skończonych
obciążenie krawędziowe
częstotliwość drgań
usztywniacz
FEM
partial edge loadings
buckling load
vibration frequency
stiffener
Opis:
The vibration characteristics of stiffened plates with cutouts subjected to in-plane partial edge loadings at one end at the plate boundaries are studied using the finite element method. Buckling loads and vibration frequencies are determined for different cutout ratios and extent of partial edge loading at one end. In the structural modelling, the plate and the stiffeners are treated as separate elements where the compatibility between these two types of elements is maintained. The main elegance of the formulation lies in the treatment of the stiffeners. The stiffeners can be placed anywhere within the plate element, and need not be placed on the nodal lines. The vibration characteristics are discussed and the results are compared with those available in the literature. Numerical results are presented for a range of cutout to plate size from 0 to 0.8.
Źródło:
International Journal of Applied Mechanics and Engineering; 2013, 18, 2; 537-553
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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