SUSY Before the Next Lepton Collider

After a brief review of the Minimal Supersymmetric Standard Model (MSSM) and specifically the Minimal Supergravity Model (SUGRA), the prospects for discovering and studying SUSY at the CERN Large Hadron Collider are reviewed. The possible role for a future Lepton Collider --- whether $\mu^+\mu^-$ or $e^+e^-$ --- is also discussed.Comment: LaTeX with included aipproc.sty, 17 pages, 12 figures. To appear in Workshop on Physics at the First Muon Collide

Response of a nozzle to an entropy disturbance example of thermodynamically unsteady aerodynamics

The larger number of problems that qualify as unsteady aerodynamics relate to non-uniform motion of surfaces -- such as pitching of airfoils -- or the correspondingly non-uniform motion of a fluid about a surface -- such as a gust passing over an airfoil. Experiment and analysis concerning these problems aims to determine the non-steady forces or surface stresses on the object. These may be thought of as "kinematically" non-steady problems. Another class of problems presents itself when the undisturbed gas stream temperature (or density) is non-steady although the velocity and pressure are steady; such non-uniformities are associated with entropy variations from point to point of the stream. In a locally adiabatic flow these entropy variations are transported with the stream, and when a fixed boundary -- such as an airfoil -- is encountered, the flow field undergoes a non-steady change because the density variations alter the pressure field -- or the stresses at the boundaries. This happens in spite of the fact that the undisturbed free -stream velocity field and the surface boundaries of the flow are independent of time. A gas turbine blade, for example, will experience a time-dependent load simply because of temperature fluctuations in the combustion products flowing over it, although the angle of attack is independent of time. We shall call these "thermodynamically" unsteady flows in contrast with the more familiar kinematically unsteady flows

First Record of \u3ci\u3eTachysphex Pechumani\u3c/i\u3e (Hymenoptera: Sphecidae) From Indiana

A nesting population of Tachysphex pechumani is recorded from near Indiana Dunes National Lakeshore, Porter County, Indiana. This record is a western extension of the known range of this uncommon species. Nesting biology of T. pechumani at this locality was similar to previously published observations on this species

Some Gasdynamic Problems in the Flow of Condensing Vapors

Some Gasdynamic Problems in the Flow of Condensing Vapors. The general problem of the flow of a wet vapor, with or without an inert diluent is formulated under the assumption that the liquid phase is finely divided and dispersed throughout the gaseous component in droplets whose radii are nearly constant in any local region. The processes of momentum transfer, heat transfer between phases are assumed to take place according to Stokes law and Nusselt number of unity, respectively. The mass transfer process is treated as diffusion governed in the presence of an inert diluent and kinetic governed for two phases of a pure substance. The physical understanding of such problems, in contrast with those of conventional gas dynamics, rests largely in the role played by the relaxation times or equilibration lengths associated with these three processes. Consequently, both simple and coupled relaxation processes are examined rather carefully by specific examples. Subsequently, the problem of near-equilibrium flow in a nozzle with phase change is solved under the small-slip approximation. The structure of the normal shock in a pure substance is investigated and reveals three rather distinct zones: the gasdynamic shock, the vapor relaxation zone, and the thermal and velocity equilibration zone. The three-dimensional steady flow of the two-phase condensing continuum is formulated according to first order perturbation theory, and the structure of waves in such supersonic flow is examined. Finally, the attenuation of sound in fogs is formulated and solved accounting for the important effects of phase change as well as the viscous damping and heat transfer which have been included in previous analyses

Observations on the Nesting Behavior of \u3ci\u3eAuplopus Caerulescens Subcorticalis\u3c/i\u3e and Other Auplopodini (Hymenoptera: Pompilidae)

Nest searching and mud and prey transport behavior in a small aggregation of Auplopus caerulescens subcorticalis nesting in a concrete cellar foundation in upstate New York are delineated. The contents of nine cells of this subspecies are identified, the mud cells and wasps\u27 eggs are described and measured and the site of the egg attachment on the spider is defined. Selectivity in prey capture at the family level by certain females was indicated, with Thomisidae reported as a new prey family. The method of prey transport and a new prey family (Clubionidae) for Auplopus mellipes variitarsatus are given. Two prey records for Ageniella fulgifrons are included

The Coherent Flame Model for Turbulent Chemical Reactions

A description of the turbulent diffusion flame is proposed in which the flame structure is composed of a distribution of laminar diffusion flame elements, whose thickness is small in comparison with the large eddies. These elements retain their identity during the flame development; they are strained in their own plane by the gas motion, a process that not only extends their surface area, but also establishes the rate at which a flame element consumes the reactants. Where this flame stretching process has produced a high flame surface density, the flame area per unit volume, adjacent flame elements may consume the intervening reactant, thereby annihilating both flame segments. This is the flame shortening mechanism which, in balance with the flame stretching process, establishes the local level of the flame density. The consumption rate of reactant is then given simply by the product of the local flame density and the reactang consumption rate per unit area of flame surface. The proposed description permits a rather complete separation of the turbulent flow structure, on one hand, and the flame structure, on the other, and in this manner permits the treatment of reactions with complex chemistry with a minimum of added labor. The structure of the strained laminar diffusion flame may be determined by analysis, numerical computation, and by experiment without significant change to the model