Parton energy loss at strong coupling and the universal bound

The apparent universality of jet quenching observed in heavy ion collisions at RHIC for light and heavy quarks, as well as for quarks and gluons, is very puzzling and calls for a theoretical explanation. Recently it has been proposed that the synchrotron--like radiation at strong coupling gives rise to a universal bound on the energy of a parton escaping from the medium. Since this bound appears quite low, almost all of the observed particles at high transverse momentum have to originate from the surface of the hot fireball. Here I make a first attempt of checking this scenario against the RHIC data and formulate a "Universal Bound Model" of jet quenching that can be further tested at RHIC and LHC.Comment: 8 pages, 2 figures, invited plenary talk given at "Hard Probes 2008" Conference, 8-14 June 2008, Illa da Toxa, Galicia, Spai

1000 spider silkomes: linking sequences to silk physical properties

Spider silks are among the toughest known materials and thus provide models for renewable, biodegradable, and sustainable biopolymers. However, the entirety of their diversity still remains elusive, and silks that exceed the performance limits of industrial fibers are constantly being found. We obtained transcriptome assemblies from 1098 species of spiders to comprehensively catalog silk gene sequences and measured the mechanical, thermal, structural, and hydration properties of the dragline silks of 446 species. The combination of these silk protein genotype-phenotype data revealed essential contributions of multicomponent structures with major ampullate spidroin 1 to 3 paralogs in high-performance dragline silks and numerous amino acid motifs contributing to each of the measured properties. We hope that our global sampling, comprehensive testing, integrated analysis, and open data will provide a solid starting point for future biomaterial designs

Comparative analysis for performance of longwall equipment with age

The paper presents the analysis of available maintenance data for two longwall sets that have worked in one of the mines of Bharat Coking Coal limited (BCCL). One of the sets has worked for seven panels and the other was working the fourth panel. The paper compares the available information of raw maintenance data for the sixth and seventh panels for the first longwall set and second and fourth panel for the second longwall set. Graphical and analytical methods have been used to analyse the maintenance and repairs statistics and evaluate the overall performance of the sets with age

Not Available

Not AvailableNot AvailableNot Availabl

Not Available

Organism descriptor(s) : Azospirillum, Bacteria, Solanum lycopersicum Descriptor(s) : crop yield, enzyme activity, farmyard manure, fruits, growth, oxidoreductases, plant height, poultry manure, respiration, soil bacteria, soil enzymes, soil flora, tomatoes, vermicompost Identifier(s) : bacterium, FYM, Lycopersicon esculentum, Orissa, poultry litter, redox enzymes Geographical Location(s) : India, OdishaA field experiment was conducted during 2013 to study the effect of farm yard manure (FYM), poultry manure and vermicompost along with Azospirillum strain on soil biological properties, growth and yield of tomato var Utkal Kumari. The treatment, vermicompost @ 10 t ha-1 along with Azospirillum strain @ 5 kg ha-1, showed higher fruit (27.61 t/ha) and stover yield (9.38 t/ha) in comparison to other treatments. Plant height at 30, 60 and 90 days after planting and fruits/cluster (3.90) were maximum in the same treatment. Interestingly, it was also observed that the performance of tomato with respect to fruit diameter (5.23 cm), fruit height (4.90 cm) and girth of plant (4.67 cm) were statistically significant in the same treatments. The soil dehydrogenase activity (125.26 µg TPF g-1 soil day-1), soil respiration (250.22 µg CO2-Cg-1 soil day-1) and the soil bacterial population (88×106 no. CFU per 1 g soil) was also observed highest in the plot where Azospirillum strain was applied along with vermicompost.Not Availabl

Influence of in-flight particle state diagnostics on properties of plasma sprayed YSZ-CeO2 nanocomposite coatings

This article describes the influence of controlling in-flight hot particle characteristics on properties of plasma sprayed nanostructured yttria stabilized zirconia (YSZ) coatings. This article depicts dependence of adhesion strength of as-sprayed nanostructured YSZ coatings on particle temperature, velocity and size of the splat prior to impact on the metallic substrate. Particle temperature measurement is based on two-color pyrometry and particle velocities are measured from the length of the particle traces during known exposure times. The microstructure and adhesion strength of as-sprayed nano-YSZ coatings were studied. Field emission scanning electron microscopy results revealed that morphology of coating exhibits bimodal microstructure consisting of nano-zones reinforced in the matrix of fully melted particles. The coating adhesion strength is noticed to be greatly affected by the melting state of agglomerates. Maximum adhesion strength of 42.39 MPa has been experimentally found out by selecting optimum levels of particle temperature and velocity. The enhanced bond strength of nano-YSZ coating may be attributed to higher interfacial toughness due to cracks being interrupted by adherent nano-zones

Not Available

Not AvailableNot AvailableNot Availabl