Zobrazeno 1 - 10
of 466
pro vyhledávání: '"P. Ratnakumar"'
Autor:
Toft, Joachim, Ratnakumar, P. K.
Let $\mathcal H$ be a Hilbert space of distributions on $\mathbf R^d$ which contains at least one non-zero element in $\mathscr D '(\mathbf R^d)$. If there is a constant $C_0>0$ such that $$ \nm {e^{i\scal \cdo \xi}f(\cdo -x)}{\mathcal H}\le C_0\nm f
Externí odkaz:
http://arxiv.org/abs/2407.08435
Autor:
Brij Bihari Pandey, P. Ratnakumar, B. Usha Kiran, Mangesh Y. Dudhe, G. Sowjanya Lakshmi, Kulasekaran Ramesh, Arti Guhey
Publikováno v:
Frontiers in Plant Science, Vol 12 (2021)
Sesame is predominantly cultivated in rainfed and low fertile lands and is frequently exposed to terminal drought. Sesamum species inhabiting dryland ecosystems adaptively diverge from those inhabiting rainfed habitats, and drought-specific traits ha
Externí odkaz:
https://doaj.org/article/393b9d5e5f1e4523a9334f77013b223f
Autor:
KIRAN P. BHAGAT, S.K. BAL, YOGESHWAR SINGH, S. POTEKAR, SUNAYAN SAHA, P. RATNAKUMAR, G.C. WAKCHAURE, P.S. MINHAS
Publikováno v:
Journal of Agrometeorology, Vol 19, Iss 1 (2017)
Soybean is an important crop, and physiologically, it is photosensitive in nature and therefore, is likely to be highly affected by the atmospheric brown clouds (ABCs) which reduce PAR (Photosynthetically Active Radiation) availability, and moisture
Externí odkaz:
https://doaj.org/article/d507cdc841d048b3aef123116606c78c
Publikováno v:
Plant, Soil and Environment, Vol 59, Iss 9, Pp 410-416 (2013)
Four peanut (Arachis hypogaea L.) cultivars (cvs. TPT-1, TPT-4, JL-24 and TMV-2) were grown in open-top chambers at 350 and 600 µmol CO2/mol in soil amended with 0 (control), 50, 100 and 200 mmol solutions of NaCl. The net photosynthetic rate (Pn),
Externí odkaz:
https://doaj.org/article/0a2427bf686d4c8181f824519e6f71a7
Autor:
M. Vanaja, M. Jyothi, P. Ratnakumar, P. Vagheera, P. Raghuram Reddy, N. Jyothi Lakshmi, S.K. Yadav, M. Maheshwari, B. Venkateswarlu
Publikováno v:
Plant, Soil and Environment, Vol 54, Iss 1, Pp 38-46 (2008)
Growth and yield responses of castor bean (Ricinus communis L.) to two elevated CO2 levels (550 and 700 ppm) were evaluated up to the maturity of first order spikes in open top chambers (OTCs). The growth characteristics - root and shoot lengths, roo
Externí odkaz:
https://doaj.org/article/f0d91aef6cf443bc8dc9f6b6e738baa3
Autor:
M. Vanaja, P. Raghuram Reddy, N. Jyothi Lakshmi, M. Maheswari, P. Vagheera, P. Ratnakumar, M. Jyothi, S.K. Yadav, B. Venkateswarlu
Publikováno v:
Plant, Soil and Environment, Vol 53, Iss 2, Pp 81-88 (2007)
The response of blackgram (Vigna mungo L. Hepper) to two levels of elevated carbon dioxide (550 and 700 ppm) in terms of growth and yield was investigated and compared with ambient CO2 level (365 ppm) using open-top chambers. The growth parameters vi
Externí odkaz:
https://doaj.org/article/a3e375b026fa48dfbe56f09e0642e9ff
Autor:
M. Vanaja, P. Ratnakumar, P. Vagheera, M. Jyothi, P. Raghuram Reddy, N. Jyothi Lakshmi, M. Maheshwari, S.K. Yadav
Publikováno v:
Plant, Soil and Environment, Vol 52, Iss 11, Pp 499-504 (2006)
An attempt was made to understand the interactive effect of the elevated CO2 and moisture stress on germination and initial growth responses of blackgarm (Vigna mungo L. Hepper). Four open top chambers (OTCs) were used for different conditions: irrig
Externí odkaz:
https://doaj.org/article/031ebd1c5065467ca0c377e86a895d29
Autor:
M. Vanaja, P. Vagheera, P. Ratnakumar, N. Jyothi Lakshmi, P. Raghuram Reddy, S.K. Yadav, M. Maheswari, B. Venkateswarlu
Publikováno v:
Plant, Soil and Environment, Vol 52, Iss 4, Pp 164-170 (2006)
A study was conducted with two important rainfed food crops viz., sorghum (Sorghum bicolor L. Moench.) and blackgram (Vigna mungo L. Happer) and two oil seed crops viz., sunflower (Helianthus annuus L.) and groundnut (Arachis hypogaea L.) under two c
Externí odkaz:
https://doaj.org/article/7cb08cdcfc224c76b073e8c39166da8e
We show that for any Hilbert space of distributions on $\textbf{R}^d$ which is translation and modulation invariant, is equal to $L^2(\textbf{R}^d)$, with the same norm apart from a multiplicative constant.
Comment: 6 pages
Comment: 6 pages
Externí odkaz:
http://arxiv.org/abs/2004.02430
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