Physical Metallurgy of Sheets

Steel is an alloy of iron and carbon and with or without one or more than One of the alloying elements such as silicon, molybdenum,tungsten, chromium, nickel, vanadium, manganese etc. In addition to the above it contains trace amount of sulfur and phosphorus. Around 90% of the total amount of metals used by men for various applications are ferrous alloys which Includes mainly steel and cast iron

Presentation of XML content using WYSIWYG templates

XML has gained worldwide popularity for its ability to represent very general structured content. It is a platform independent format that has been successfully used for both media and more traditional textual data. However, the presentation of XML content has been an area of research ever since its introduction. We discuss the state of the art in XML content presentation, and then describe a new method for user designed transformation using WYSIWYG templates in HTML, that will allow users to design their own XML presentation format

High Speed Steels

High Speed Steels (HSS) are special class of high alloy steels and are used mainly for the manufacture of cutting tools such as taps, dies, tool bits, drill bits, milling cutter, reamer, broaches, long run punches and dies etc. High speed steel gets its name from the fact that it is used to cut at high speed. The first high speed steels were tungsten type developed by Robert Mushet in UK and FW Taylor in USA towards the end of last century. In 1904 addition of vanadium was patented by crucible steel comp-any leading finally to today's best known grade, the 18/4/1 steel. The addition of cobalt in HSS was first reported in 1912 by Becker in Germany. Due to the shortage of tungsten and its increase in prices, Mo bearing high speed steels were introduced in around 1930 in USA

Analysis of Fermi-LAT data from Tucana-II: Possible constraints on the Dark Matter models with an intriguing hint of a signal

Tucana-II (Tuc-II), a recently discovered and confirmed Ultra Faint Dwarf Spheroidal galaxy, has a high mass to light ratio as well as a large line-of-sight stellar velocity dispersion, thus making it an ideal candidate for an indirect dark matter (DM) search. In this paper, we have analyzed nine years of $\gamma$-ray data obtained from the \textit{Fermi}-LAT instrument from the direction of Tuc-II. The fact that a very weak significant $\gamma$-ray excess ($2.2\sigma$) over the background of Tuc-II have been detected from the location of this galaxy. We have observed that this excess of $\gamma$-ray emission from the of location Tuc-II rises with longer periods of data. If WIMP pair annihilation is assumed for this faint emission, for $b\bar{b}$ annihilation channel the test statistics (TS) value peaks at DM mass $\sim$ 14 GeV and for $\tau^{+}\tau^{-}$ annihilation channel it peaks at DM mass 4 GeV. It is then called for an estimation of the $95\%$ confidence level upper limit of the possible velocity weighted self-annihilation cross-section of the DM particles (WIMPs) within Tuc-II by fitting the observed $\gamma$-ray flux with spectra expected for DM annihilation. The estimated upper limits of the cross-sections from Tuc-II are then compared with two other dwarf galaxies that are considered to be good DM candidates in several studies. We have also compared our results with the cross-sections obtained in various popular theoretical models of the WIMPs to find that our results impose reasonable tight constraints on the parameter spaces of those DM models. In the concluding section, we compared our results with the similar results obtained from a combined dSph analysis by the \textit{Fermi}-LAT collaboration as well as the results obtained from the studies of DM in the dwarf galaxies by the major ground-based Cherenkov experiments.Comment: 23 pages, 16 figures, 7 table