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We report measurement of reactor based electron anti-neutrinos from a prototype array of plastic scintillator bars ( mini-ISMRAN ) located inside Dhruva research reactor hall, BARC. The detector setup took data for 128 days for reactor on (RON) and 51 days for reactor off (ROFF) condition. A detailed analysis procedure is developed to select the anti-neutrino candidate events based on the energy deposition, number of bars hit as well as topological event selection criteria in position and time. Each of these selection criteria are compared with Monte Carlo based simulations and further an embedding technique is used to estimate the efficiencies from a data driven background study. The obtained anti-neutrino like events in RON condition are 218 $\pm$ 50 (stat) $\pm$ 37 (sys) after background subtraction. The obtained results are compared with theoretical estimation which yields 214 $\pm$ 32 (sys) anti-neutrino events for the RON condition., Comment: 25 pages, 20 figures

The nanometer scale lattice deformation brought about by the dopants in high temperature superconducting cuprate La$_{2-x}$Sr$_x$CuO$_4$(x=0.08) was investigated by measuring the associated X-ray diffuse scattering around multiple Bragg peaks. A characteristic diffuse scattering pattern was observed, which can be well described by continuum elastic theory. With the fitted dipole force parameters, the acoustic type lattice deformation pattern was re-constructed and found to be of similar size to lattice thermal vibration at 7 K. Our results address the long-term concern of dopant introduced local lattice inhomogeneity, and show that the associated nanometer scale lattice deformation is marginal and cannot, alone, be responsible for the patched variation in the spectral gaps observed with scanning tunneling microscopy in the cuprates., Comment: 5 pages, 4 figures, accepted by PRL

We show that properly engineered amorphous Fe-Gd alloy thin films with perpendicular magnetic anisotropy exhibit room-temperature skyrmion molecules, or a pair of like-polarity, opposite-helicity skyrmions. Magnetic mirror symmetry planes present in the stripe phase, instead of chiral exchange, determine the internal skyrmion structure and the net achirality of the skyrmion phase. Our study shows that stripe domain engineering in amorphous alloy thin films may enable the creation of skyrmion phases with technologically desirable properties., Comment: 15 pages, 6 figures. Accepted for publication in Applied Physics Letters

We have measured resonant soft x-ray diffuse magnetic scattering as a function of temperature in a positively exchange biased Co/FeF2 bilayer and analyzed the data in the distorted wave Born approximation to obtain in-plane charge and magnetic correlation lengths associated with the Co and FeF2 layers and estimate interfacial roughness. Tuning to the Fe and Co L3 edges reveals significantly different temperature trends in these quantities in the antiferromagnetic and ferromagnetic layers, respectively. While the magnetic correlation length of the uncompensated interfacial spins in FeF2 layer increase as temperature decreases, these quantities remain unchanged in the Co layer. Our results indicate that uncompensated Fe spins order within a range of few hundred nanometers in otherwise randomly distributed uncompensated magnetic moments, giving rise to spin clusters in the antiferromagnet whose size increase as the temperature decrease., Comment: 11 pages, 4 figures

X-ray scattering measurements on optimally-doped single crystal samples of the high temperature superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+��}$ reveal the presence of three distinct incommensurate charge modulations, each involving a roughly fivefold increase in the unit cell dimension along the {\bf b}-direction. The strongest scattering comes from the well known (H, K$\pm$ 0.21, L) modulation and its harmonics. However, we also observe broad diffraction which peak up at the L values complementary to those which characterize the known modulated structure. These diffraction features correspond to correlation lengths of roughly a unit cell dimension, $��_c$$\sim$20 $��$ in the {\bf c} direction, and of $��_b$$\sim$ 185 $��$ parallel to the incommensurate wavevector. We interpret these features as arising from three dimensional incommensurate domains and the interfaces between them, respectively. In addition we investigate the recently discovered incommensuate modulations which peak up at (1/2, K$\pm$ 0.21, L) and related wavevectors. Here we explicitly study the L-dependence of this scattering and see that these charge modulations are two dimensional in nature with weak correlations on the scale of a bilayer thickness, and that they correspond to short range, isotropic correlation lengths within the basal plane. We relate these new incommensurate modulations to the electronic nanostructure observed in Bi$_2$Sr$_2$CaCu$_2$O$_{8+��}$ using STM topography., 8 pages, 8 figures

This article 'Giri-a high-yielding, slender-grain, sheath blight-and bacterial blight-resistant variety for shallow-water conditions in West Bengal' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

Using high-energy diffraction we show that a 4-unit-cell superstructure, q0=(1/4,0,0), along the shorter Cu-Cu bonds coexists with superconductivity in optimally doped YBCO. A complex set of anisotropic atomic displacements on neighboring CuO chain planes, BaO planes, and CuO2 planes, respectively, correlated over ~3-6 unit cells gives rise to diffuse superlattice peaks. Our observations are consistent with the presence of Ortho-IV nanodomains containing these displacements., Comment: Corrected typo in abstract

A simple scheme to extract the magnetization reversals of characteristic magnetic domains on nanofabricated periodic arrays from soft x-ray resonant magnetic scattering (SXRMS) data is presented. The SXRMS peak intensities from a permalloy square ring array were measured with field cycling using circularly polarized soft x-rays at the Ni L$_3$ absorption edge. Various SXRMS hysteresis loops observed at different diffraction orders enabled the determination of the magnetization reversal of each magnetic domain using a simple linear algebra. The extracted domain-specific hysteresis loops reveal that the magnetization of the domain parallel to the field is strongly pinned, while that of the perpendicular domain rotates continuously., Comment: 4 pages, 4 figures

This article 'Sashi (CN842-15-5, IET14105), a high-yielding, long-slender grain for shallow water conditions in West Bengal, India' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

Se describen los principales temas, perspectivas y debates en la enseñanza del inglés para hablantes de otros idiomas (English for Speakers of Other Languages) en Gran Bretaña. Al combinar el análisis histórico, sociolingüístico e intercultural sobre las necesidades lingüísticas de los inmigrantes adultos en este país, el debate se ocupa de cuestiones relacionadas con el aprendizaje y la enseñanza del inglés para hablantes de otros idiomas. SC Biblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 planta; 28014 Madrid; Tel. +34917748000; biblioteca@mecd.es GBR

Neutron scattering investigations of the paramagnetic correlations in the layered manganite La$_{1.2}$Sr$_{1.8}$Mn$_{2}$O$_{7}$, which exhibits colossal magnetoresistance above the Curie transition at T$_C$ = 112 K, show that spins in neighboring layers within each bilayer are strongly canted at an average angle that is dependent on both the magnetic field and temperature, as predicted by de Gennes. The in-plane correlation length does not diverge at T$_C$, although the magnetic Bragg intensity obeys critical scaling below T$_C$, with the same temperature dependence as the zero-field electrical conductance., Comment: 4 pages (RevTex), 4 figures (encapsulated postscript)

This article 'Flowering behavior of rainfed lowland rice varieties during dry season in West Bengal, India' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

This article 'Effect of Seed Size on Grain Yield of Rice' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

This article 'Promising Breeding Lines for Submergence-Prone and Medium-Deep Rainfed Lowland Conditions' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

This article 'Performance of Some New Rices in Chinsurah' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

This article 'Screening Rice Varieties for Cold Tolerance At Seedling and Reproductive Stages' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

EBV is a human herpes virus that causes mononucleosis and is associated with various tumors. EBV infects cells via the CR2 that was previously thought to be expressed only on the surface of B cells and certain epithelial cells. Recent findings in our laboratory and those of others, however, have shown that the EBV receptor is also present on T cells. Our study shows that Jurkat human T cells have a molecule that reacts with both anti-CR2 antibodies and the third component of complement, C3. Furthermore, the data indicate that this molecule binds EBV detected by incubation with biotin-conjugated virus and streptavidin phycoerythrin. Viral binding is specific, as it is inhibited by nonconjugated virus, with anti-CR2 antibodies, and with an antibody reactive with the glycoprotein (gp350) that EBV uses to bind CR2. In addition, EBV variably infects Jurkat cells as demonstrated by the presence of transcripts of Epstein Barr nuclear Ag (EBNA-1) using the polymerase chain reaction. Immunoprecipitation experiments with anti-CR2 antibodies and SDS-PAGE analysis reveal a protein with an apparent molecular mass of 155 kDa which is higher than the one seen in B cells. The size of this molecule is reduced to 119 kDa upon endoglycosidase F treatment. Northern blot analysis of Jurkat poly(A)+ RNA shows a transcript of 4.7 kb upon probing with the B cell CR2 cDNA. This size is consistent with that of B cell CR2 mRNA. Two cDNA clones were identified upon screening of a Jurkat cell cDNA library with the B cell CR2 cDNA. One of the clones possesses an identical nucleotide sequence to the one corresponding to B cell CR2, whereas the other represents a differentially spliced transcript which lacks the exon 8b of B cell CR2. Analysis of Jurkat and Raji mRNA by PCR demonstrated the presence of this novel splice variant in both cell lines.

The present study was carried out to screen six promising varieties of chrysanthemum (Chrysanthemum morifolium Ramat.), viz. Pusa Chitraksha, Lalit, Pusa Aditya, Basanti, Himanshu, and Pusa Sona in MS (Murashige and Skoog) media supplemented with 0, 50, 100 and 150 mM/NaCl. As the concentration of NaCl increased, there was a corresponding decrease in shoot length, fresh weight, number of leaves and rooting percentage. Number of shoots per plant exhibited not much significant difference. Maximum reduction in plant growth was recorded in the variety Pusa Sona (60.60%) while minimum reduction was observed in variety Pusa Aditya (35.60%). The highest fresh weight was recorded in variety Pusa Aditya and lowest in the varieties Himanshu and Pusa Sona, when the medium was supplemented with 150 mM NaCl. Variety Pusa Sona (57.00%) had the maximum reduction in the number of leaves per plant and minimum was found in the variety Lalit (29.10%). Increasing salt stress had an adverse effect on rooting abilities of all the varieties. Under the control with no added NaCl, the rooting percentage was 100% among all the varieties. In medium supplemented with 150 mM/l NaCl, the maximum rooting was recorded in the variety Pusa Aditya (63.80%)) and Basanti (63.80%), whereas least was observed in the varieties Pusa Sona and Himanshu (22.00% and 41.80%, respectively).

The low-pressure MOVPE growth of ZnMgSe on (100)GaAs is reported. ZnMgSe alloys were deposited after a thin pseudomorphic ZnSe buffer layer by using dimethylzinc:triethylammine (Me 2 Zn:Et 3 N), ditertiarylbutilselenide ( t Bu 2 Se) and bis(methylcyclopentadienyl)magnesium [(MeCp) 2 Mg]. Zn 1-x Mg x Se (0.10 < x < 0.46) epilayers were grown at 330°C, 304 mbar and a high VI/II ratio in the vapour. Under these conditions the growth is limited by the mass transport of the II-group alkyls and good control of the composition was achieved. Rutherford backscattering spectrometry measurements allowed to determine the epilayer stoichiometry and deposited dose. The ZnMgSe solid-vapour distribution curve deviates from linearity due to the different Mg and Zn alkyl vapour diffusion coefficients, whose ratio turns out to be D (MeCp)2Mg /D Me2Zn = 0.410. The epilayer crystalline properties were studied by double-crystal X-ray diffraction (DC-XRD) and high-resolution reciprocal space mapping (RSM) measurements. Rocking curve FWHM values of 540-900 nm thick Zn 1 - x Mg x Se were in the 5-12 mrad range, indicating the occurrence of extended defects in the epilayers. RSM measurements in the vicinity of the (400)-peak of a Zn 0.844 Mg 0.156 Se/ZnSe/(100)GaAs sample showed a slight asymmetry of the ternary alloy peak along the growth direction, ascribed to an inhomogeneous relaxation of the epilayer.