Mixed Phase in Compact Starts : M-R relations and radial oscillations

It is believed that quark stars or neutron stars with mixed phase in the core have smaller radii compared to ordinary compact stars. With the recent observation of several low radius objects, typically a radius of $<10 Km.$ for star of mass $< 1M_0$ in low mass X-ray binaries (LMXB), it has become very important to understand the nature of these objects. An accurate determination of mass-radius relationship of these objects provide us with a physical laboratory to study the composition of high density matter and the nature of phase transition. We study the effect of quark and nuclear matter mixed phase on mass radius relationship and radial oscillations of neutron stars. We find that the effect of the mixed phase is to decrease the maximum mass of a stable neutron star and to decrease the radial frequencies .Comment: guest contribution at Int. Workshop on Astronomy & Relativistic Astrophysics (IWARA 03)held at Olinda-PE (Brazil) from Oct. 12-17,200

Control of Ralstonia Solanacearum Infection in Tomato, Brinjal and Capsicum by Antibiotic Sensitivity Test

Ralstonia solanacearum is one of the important dreaded soil's borne bacterial phytopathogen which causes enormous losses in the crop plants in tropical, subtropical and temperate region of the world. In India, the disease is highly prevalent and active throughout the year where the soil is acidic in the Eastern Plateau and Hill Region. Once the disease is established in the field, it cannot be controlled by chemical means. Keeping these in view, screening of potential antibiotics for the management of R. solanacearum was done. In the present study, three strains of R. solanacearum were isolated from Brinjal, Tomato and Capsicum. Against these three strains of R. solanacearum, four antibiotics were screened through food poison techniques viz. Kasugamycin, Streptomycin, Ceftriaxone and Gentamicin. The different strains of R. solanacearum and antibiotic sensitivity showed varied response. Among the screened antibiotics, Gentamicin showed strong antibacterial efficacy which inhibited 100% Colony-forming Unit (cfu) at very low concentration (1 ppm) followed by Ceftriaxone which inhibited &gt;50% cfu at 1 ppm against all three strains. However, Streptomycin also showed antibacterial efficacy and inhibited &gt;50% cfu at 3 ppm, but Kasugamycin was found less antibacterial as compared to other tested antibiotics and inhibited &gt;50% cfu at 4 ppm

Identification of RAPD and SCAR markers associated with yield traits in the Indian tropical tasar silkworm Antheraea mylitta drury

Abstract The tropical tasar silkworm, Antheraea mylitta, is a semi-domesticated vanya silk-producing insect of high economic importance. To date, no molecular marker associated with cocoon and shell weights has been identified in this species. In this report, we identified a randomly amplified polymorphic DNA (RAPD) marker and examined its inheritance, and also developed a stable diagnostic sequence-characterized amplified region (SCAR) marker. Silkworms were divided into groups with high (HCSW) and low (LCSW) cocoon and shell weights, and the F 2 progeny of a cross between these two groups were obtained. DNA from these silkworms was screened by PCR using 34 random primers and the resulting RAPD fragments were used for cluster analysis and discriminant function analysis (DFA). The clustering pattern in a UPGMA-based dendogram and DFA clearly distinguished the HCSW and LCSW groups. Multiple regression analysis identified five markers associated with cocoon and shell weights. The marker OPW16 905 bp showed the most significant association with cocoon and shell weights, and its inheritance was confirmed in F 2 progeny. Cloning and sequencing of this 905 bp fragment showed 88% identity between its 134 nucleotides and the Bmc-1/Yamato-like retroposon of A. mylitta. This marker was further converted into a diagnostic SCAR marker (SCOPW 16 826 bp ). The SCAR marker developed here may be useful in identifying the right parental stock of tasar silkworms for high cocoon and shell weights in breeding programs designed to enhance the productivity of tasar silk

Učinak dodatka kondenziranih tanina putem obroka od mješavine lišća Ficus infectoria i Psidium guajava na antioksidacijski status eritrocita, imunosni odgovor i želučano-crijevne obliće u janjadi (Ovis aries)

This experimental study was carried out to assess the effect of condensed tannins (CT) through a leaf meal mixture of Ficus infectoria and Psidium guajava, on erythrocytic antioxidant status, immune response and gastrointestinal nematodes in lambs. Twenty-four non-descript lambs were randomly divided into four groups, consisting of six lambs in each, in a completely randomized block design, and randomly allocated to 4 dietary treatments: CT-0, CT-1, CT-1.5 and CT-2 containing 0, 1, 1.5 and 2.0 percent CT, respectively. The erythrocytic antioxidant status was monitored in all lambs at 0, 45, 90, 135, 180 days of feeding, however, humoral and cell mediated immune responses were determined at the end of the feeding trial. Hemoglobin was found to be highest (P<0.05) in CT-1.5 followed by CT-1, CT-2 and CT-0, respectively. CT supplementation significantly (P<0.05) improved the antioxidant status, as indicated by increased levels of glutathione peroxidase, catalase, reduced glutathione, glutathione-S-transferase, superoxide dismutase, total thiol and protein bound thiol group and decreased lipid peroxidase in the lambs. Supplementation of CT significantly (P<0.05) improved the cell mediated immune response in lambs. The fecal egg counts (FEC) in lambs were significantly (P<0.01) higher in the control group (CT-0), followed by CT-1, CT-1.5 and CT-2. The pooled fecal cultures of the lambs revealed that the majority of the infective larvae were from Haemonchus contortus. The FEC in the control was significantly higher (P<0.05) throughout the study period compared to the CT-1.5 and CT-2 groups. It may be concluded that dietary supplementation of CT (1-2%) through LMM improved the erythrocytic antioxidant status and immune response, and reduced FEC in lambs.Istraživanje je provedeno u svrhu procjene učinka kondenziranih tanina (KT), dodanih putem obroka od mješavine lišća Ficus infectoria i Psidium guajava, na antioksidacijski status eritrocita, imunosni odgovor i želučano-crijevne obliće u janjadi. Dvadeset i četiri janjeta slučajnim su odabirom bila razvrstana u četiri skupine po šest janjadi u svakoj skupini. Randomiziranim kompletnim blok-dizajnom i nasumičnim pridjeljivanjem formirane su četiri skupine s različitim udjelom KT u obroku: skupina KT-0 (0% KT), skupina KT-1 (1%), skupina KT-1,5 (1,5%) i skupina KT-2 (2%). Kod sve janjadi praćen je antioksidacijski status eritrocita 0., 45., 90., 135. i 180. dan hranidbe, a na kraju istraživanja određen je humoralni i stanični imunosni odgovor. Najviša razina (P<0,05) haemoglobina utvrđena je u skupini KT-1,5 nakon koje su slijedile skupine KT-1, KT-2 i KT-0. Dodani je KT signifikantno (P<0,05) poboljšao antioksidacijski status janjadi što su pokazale povišene razine glutation-peroksidaze, katalaze, zatim redukcija razine glutationa, glutation-S-transferaze, superoksid-dismutaze, ukupnog tiola i protein vezane tiol skupine kao i sniženje razine lipidne peroksidaze. Dodavanje KT signifikantno je (P<0,05) poboljšalo stanični imunosni odgovor janjadi. Broj jaja u fecesu bio je signifikantno (P<0,01) viši u kontrolnoj skupini (KT-0) janjadi nakon koje su slijedile skupine KT-1, KT-1,5 i KT-2. Skupne kulture iz fecesa janjadi pokazale su da većina invazivnih larvi pripada vrsti Haemonchus contortus. Broj jaja u fecesu kontrolne skupine janjadi bio je tijekom cijeloga istraživanog razdoblja signifikantno povišen (P<0,05) u odnosu na skupine KT-1,5 i KT-2. Može se zaključiti da je dodavanjem mješavine lišća s 1 – 2% KT u obroku kod janjadi poboljšan antioksidacijski status eritrocita i imunosni odgovor te smanjen broj prazitskih jajašaca u fecesu

Constraints on Astro-unparticle Physics from SN 1987A

SN 1987A observations have been used to place constraints on the interactions between standard model particles and unparticles. In this study we calculate the energy loss from the supernovae core through scalar, pseudo scalar, vector, pseudo vector unparticle emission from nuclear bremsstrahlung for degenerate nuclear matter interacting through one pion exchange. In order to examine the constraints on $d_{\cal U}=1$ we considered the emission of scalar, pseudo scalar, vector, pseudo vector and tensor through the pair annihilation process $e^+e^-\to {\cal U} \gamma$. In addition we have re-examined other pair annihilation processes. The most stringent bounds on the dimensionless coupling constants for $d_{\cal U} =1$ and $\Lambda_{\cal U}= m_Z$ are obtained from nuclear bremsstrahlung process for the pseudo scalar and pseudo-vector couplings $\bigl|\lambda^{\cal P}_{0,1}\bigr|\leq 4\times 10^{-11}$ and for tensor interaction, the best limit on dimensionless coupling is obtained from $e^+ e^-\to {\cal U} \gamma$ and we get $\bigl|\lambda^{\cal T}\bigr| \leq 6\times 10^{-6}$.Comment: 12 pages, 2 postscript figure

Measurements of branching fraction ratios and CP-asymmetries in suppressed B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^- decays

We report the first reconstruction in hadron collisions of the suppressed decays B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^-, sensitive to the CKM phase gamma, using data from 7 fb^-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B^- -> D(-> K^+ pi^-)K^- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 \pm 8.6(stat)\pm 2.6(syst)]\times 10^-3, R^+(K) = [42.6\pm 13.7(stat)\pm 2.8(syst)]\times 10^-3, R^-(K)= [3.8\pm 10.3(stat)\pm 2.7(syst]\times 10^-3, as well as the direct CP-violating asymmetry A(K) = -0.82\pm 0.44(stat)\pm 0.09(syst) of this mode. Corresponding quantities for B^- -> D(-> K^+ pi^-)pi^- decay are also reported.Comment: 8 pages, 1 figure, accepted by Phys.Rev.D Rapid Communications for Publicatio