142 research outputs found
Strategies for pigeonpea improvement
In order to feed an ever-increasing population, it is essential to deal yield reducing factors. Climate smart crop varieties that yield more with fewer inputs will be required to achieve the success. In this scenario pigeonpea plays an important role as it can stand in relatively harsh environmental conditions. Hybrid breeding along with the pure line breeding, genetic resources and genomics advances are enriching this crop. However, the pigeonpea improvement program must be re-oriented in order to deal with the yield-reducing factors and to break the yield plateau
Hidden Quantum Critical Point in a Ferromagnetic Superconductor
We consider a coexistence phase of both Ferromagnetism and superconductivity
and solve the self-consistent mean-field equations at zero temperature. The
superconducting gap is shown to vanish at the Stoner point whereas the
magnetization doesn't. This indicates that the para-Ferro quantum critical
point becomes a hidden critical point. The effective mass in such a phase gets
enhanced whereas the spin wave stiffness is reduced as compared to the pure FM
phase. The spin wave stiffness remains finite even at the para-Ferro quantum
critical point.Comment: 4 pages, Phys. Rev. B (Rapid) accepte
Testing of newly developed glycophospholipid antigen for the detection of P. falciparum malaria by laser light immunoassay in endemic and non-endemic areas
A glycophospholipid (GPL) antigen isolated from Plasmodium falciparum culture supernatant hasbeen tested for its antigenicity. Detection of malaria positive known blood samples and unknown fieldsamples from endemic and non-endemic areas were compared. In this study laser light scattering immunoassay(LIA) was used for the detection of P. falciparum malaria. Test results of control (malaria negativesamples from Surat) were compared with known positive samples and unknown malaria positivefield samples. A positive correlation has been observed (97%) in falciparum positive samples from laboratoryand unknown samples from endemic area (Haldwani) by LIA method using GPL antigen. Fromthe results of the study it was found that GPL antigen has a better antigenic property and can detectalmost all the cases of Pf malaria by LIA method
PRIL_A, PRIL_B and PRIL_C: Pigeonpea Recombinant Inbred Line Mapping Populations Segregating for Resistance to Fusarium Wilt and Sterility Mosaic Disease
Pigeonpea [Cajanus cajan (L) Millsp] bi-parental populations segregating for various traits of interest are being developed. The three most advanced populations, named PRIL_A, PRIL_B and PRIL_C (Pigeonpea Recombinant Inbred Line, population A, B and C) have reached F6 generation. PRIL_A: derived from the cross ICPB 2049 x ICPL 99050 segregates for fusarium wilt (FW), 329 lines. PRIL_B: derived from the cross ICPL 20096 x ICPL 332 segregates for FW and sterility mosaic disease (SMD), 342 lines. PRIL_C: derived from the cross ICPL 20097 × ICP 8863 segregates for SMD, 366 lines. Marker genotyping of the parental lines, however, showed low level of genetic variation. After screening over 4,616 (3,000 simple sequence repeats (SSRs) and 1,616 single nucleotide polymorphism (SNPs)) markers on parental genotypes of each mapping population, a total of 159 (104 SSRs and 55 SNPs), 80 (52 SSRs and 28 SNPs) and 157 (143 SSRs and 14 SNPs) markers were found polymorphic for ICPB 2049 vs ICPL 99050, ICPL 20096 vs ICPL 332 and ICPL 20097 vs ICP 8863, respectively. The polymorphic markers will be used for constructing genetic linkage maps. The populations will be screened for FW and SMD in 2012-13, while marker-trait association analysis will also be conducted to understand the genetic basis of resistance to these diseases. Further selection from the above indicated mapping populations during 2011-12, on an effort initiated in 2010, resulted in 28 lines with high yield (up to 2.4 t/ha) and disease resistanc
Reaction-diffusion systems and nonlinear waves
The authors investigate the solution of a nonlinear reaction-diffusion
equation connected with nonlinear waves. The equation discussed is more general
than the one discussed recently by Manne, Hurd, and Kenkre (2000). The results
are presented in a compact and elegant form in terms of Mittag-Leffler
functions and generalized Mittag-Leffler functions, which are suitable for
numerical computation. The importance of the derived results lies in the fact
that numerous results on fractional reaction, fractional diffusion, anomalous
diffusion problems, and fractional telegraph equations scattered in the
literature can be derived, as special cases, of the results investigated in
this article.Comment: LaTeX, 16 pages, corrected typo
Solution of generalized fractional reaction-diffusion equations
This paper deals with the investigation of a closed form solution of a
generalized fractional reaction-diffusion equation. The solution of the
proposed problem is developed in a compact form in terms of the H-function by
the application of direct and inverse Laplace and Fourier transforms.
Fractional order moments and the asymptotic expansion of the solution are also
obtained.Comment: LaTeX, 18 pages, corrected typo
Fractional reaction-diffusion equations
In a series of papers, Saxena, Mathai, and Haubold (2002, 2004a, 2004b)
derived solutions of a number of fractional kinetic equations in terms of
generalized Mittag-Leffler functions which provide the extension of the work of
Haubold and Mathai (1995, 2000). The subject of the present paper is to
investigate the solution of a fractional reaction-diffusion equation. The
results derived are of general nature and include the results reported earlier
by many authors, notably by Jespersen, Metzler, and Fogedby (1999) for
anomalous diffusion and del-Castillo-Negrete, Carreras, and Lynch (2003) for
reaction-diffusion systems with L\'evy flights. The solution has been developed
in terms of the H-function in a compact form with the help of Laplace and
Fourier transforms. Most of the results obtained are in a form suitable for
numerical computation.Comment: LaTeX, 17 pages, corrected typo
Split transition in ferromagnetic superconductors
The split superconducting transition of up-spin and down-spin electrons on
the background of ferromagnetism is studied within the framework of a recent
model that describes the coexistence of ferromagnetism and superconductivity
induced by magnetic fluctuations. It is shown that one generically expects the
two transitions to be close to one another. This conclusion is discussed in
relation to experimental results on URhGe. It is also shown that the magnetic
Goldstone modes acquire an interesting structure in the superconducting phase,
which can be used as an experimental tool to probe the origin of the
superconductivity.Comment: REVTeX4, 15 pp, 7 eps fig
E1 amplitudes, lifetimes, and polarizabilities of the low-lying levels of atomic ytterbium
The results of ab initio calculation of E1 amplitudes, lifetimes,and
polarizabilities for several low-lying levels of ytterbium are reported. The
effective Hamiltonian for the valence electrons has been constructed in the
frame of CI+MBPT method and solutions of many electron equation are found.Comment: 11 pages, submitted to Phys.Rev.
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