Heat transfer to a gas containing a cloud of particles Final report, 1 Jun. 1962 - 31 May 1968

Radiant heat transfer to particle cloud

Silicate stabilization of soft granular materials for sandwich plate cores

This thesis summarises the research carried out at the Department of Engineering Science, University of Durham, on the mechanical properties and behaviour of silicate-stabilized materials used under laboratory conditions. It deals with methods of assessing the suitability of stabilized materials for structural and non-structural sandwich plate cores and describes the types of materials that can be stabilized with Sodium Silicate ( Soluble Silicate) and how their chemical and physical properties affect their suitability for stabilization. The influence of other factors such as temperature, moulding pressure, and dwelling time of a compressed specimen for a material stabilized by silicate are also discussed. Little attempt has been made to improve the quality or cost effectiveness of products, processes, systems and services used in construction. Relationships between the fabrication process variables and the final strength properties of the materials are established

Heat transfer to a gas containing a cloud of particles

Heat transfer to gas containing particle clou

Liquid-gas Phase Transition in Strange Hadronic Matter with Weak Y-Y Interaction

The liquid-gas phase transition in strange hadronic matter is reexamined by using the new parameters about the $\Lambda - \Lambda$ interaction deduced from recent observation of $^{6}_{\Lambda\Lambda}He$ double hypernucleus. The extended Furnstahl-Serot-Tang model with nucleons and hyperons is utilized. The binodal surface, the limit pressure, the entropy, the specific heat capacity and the Caloric curves are addressed. We find that the liquid-gas phase transition can occur more easily in strange hadronic matter with weak Y-Y interaction than that of the strong Y-Y interaction.Comment: 10 pages, 7 figure

Culture of Papaya Explant in Solid - Liquid Media Sequence as a Rapid Method for Producing Multiple Shoots

Culturing papaya axillary buds obtained from mature field-grown trees on solid MS + 0.1 mg/l BA + 500 mg/ l casein hydrolysate + 0.38 mg/l riboflavin produced less than 2 shoots per explant over a period of2 to 18 weeks. However, 82 times more shoots were produced when the explants were cultured on solid medium for 10 weeks followed by another 10 weeks in liquid medium

Numerical simulation of Quasi-Normal Modes in time-dependent background

We study the massless scalar wave propagation in the time-dependent Schwarzschild black hole background. We find that the Kruskal coordinate is an appropriate framework to investigate the time-dependent spacetime. A time-dependent scattering potential is derived by considering dynamical black hole with parameters changing with time. It is shown that in the quasinormal ringing both the decay time-scale and oscillation are modified in the time-dependent background.Comment: 10 pages, 8 figures; reference adde

Quark deconfinement phase transition for improved quark mass density-dependent model

By using the finite temperature quantum field theory, we calculate the finite temperature effective potential and extend the improved quark mass density-dependent model to finite temperature. It is shown that this model can not only describe the saturation properties of nuclear matter, but also explain the quark deconfinement phase transition successfully. The critical temperature is given and the effect of $\omega$- meson is addressed.Comment: 18 pages, 7 figure