Homogeneous spaces, multi-moment maps and (2,3)-trivial algebras

For geometries with a closed three-form we briefly overview the notion of multi-moment maps. We then give concrete examples of multi-moment maps for homogeneous hypercomplex and nearly Kaehler manifolds. A special role in the theory is played by Lie algebras with second and third Betti numbers equal to zero. These we call (2,3)-trivial. We provide a number of examples of such algebras including a complete list in dimensions up to and including five

Morphological, Chemical, Histological, and Sensory Quality Changes in Gamma Irradiated Carrots and Potatoes

Through the ages, people have been confronted with the problem of storing food after the harvest season for consumption during the winter months. Foods have been preserved by dehydration, canning, and refrigeration. However, people usually prefer fresh vegetables become unfit for human consumption as a result of sprouting and breakdown in storage. Some chemicals have been used with various degrees of success in preventing sprouting of certain vegetables. The chemicals were applied as a pre-harvest foliar spray or directly on the tubers or on the roots. In 1954, a law was passed by the United States Congress authorizing the release of small amounts of radioactive materials to study the peaceful uses of atomic energy. Since that time, many institutions have been awarded grants and contracts to work on various phases of food preservation by atomic energy. Through this program, the investigators at the Utah State University have been studying certain methods of extending the shelf life of fresh vegetables and fruits by gamma-rays. The investigations presented in this thesis are of preliminary and general nature. They were mainly concerned with effects of the dose and the rate of gamma radiation on sprout inhibition, chemical, histological, and sensory quality changes in carrots and potatoes when stored at different temperatures. In addition, studies were conducted to combine the thermal and the radiation treatments with the assumption that the threshold radiation dose may be lowered. The application of the work presented herein constitutes a new approach to the problems of vegetable preservation. The success of this new field will depend upon improved methods and techniques in handling the material and the economics of the gamma-ray source

The SAM100: Analyzing Labor Productivity

The construction industry is one of the slowest when it comes to labor productivity. As a result, construction projects see an increase in duration and labor costs. New technologies are being introduced within the construction industry to increase labor productivity. It is becoming more and more important for the industry to adapt to these technologies. Among them are robots. The SAM100 is a brick-laying robot that can replace most of the masonry crew on a project. Utilizing this technology on masonry-heavy projects could have significant benefits. This paper will analyze the benefits and weaknesses of the SAM100 on the Jay and Susie Gogue Performing Arts Center project at Auburn University in Alabama. When analyzing its benefits, this paper will focus on the qualitative data concerning its implementation into the project. It will provide insight on the advantages and disadvantages of the robot, and some challenges met from using this piece of equipment. The purpose of this paper is to provide key information regarding the utilization of the SAM100 from a project that used this piece of equipment and make suggestions for its application in the future

Numerical Computations of Generalized Korteweg-de Vries (KdV) equations

We consider the following generalized Korteweg-deVries (KdV) equation ++2+−=0. The above equation is the generalized version of the KDV equation ++2+=0. Here =(,) is a scalar function of ∈and ≥0, while \u3e0 is a parameter. This equation is used to model the unidirectional propagation of water waves. The scalar represents the amplitude of the wave. In this presentation we investigate the various limits of the solutions of the generalized equation as one or more of the parameters as ,, and tend to zero. This is carried out through numerical computations using the pseudo-spectral method

Toric geometry of G2-manifolds

We consider G2-manifolds with an effective torus action that is multi-Hamiltonian for one or more of the defining forms. The case of T3-actions is found to be distinguished. For such actions multi-Hamiltonian with respect to both the three- and four-form, we derive a Gibbons-Hawking type ansatz giving the geometry on an open dense set in terms a symmetric 3×3-matrix of functions. This leads to particularly simple examples of explicit metrics with holonomy equal to G2. We prove that the multi-moment maps exhibit the full orbit space topologically as a smooth four-manifold containing a trivalent graph as the image of the set of special orbits and describe these graphs in some complete examples

Kvikbestandens udvikling i det økologiske sædskifteforsøg på Jyndevad

Faktark med resultater fra HighCrop-projektet på side 1 samt praktiske overvejelser på side 2

Mobile Grøngødninger

Faktark med resultater fra HighCrop-projektet på side 1 samt praktiske overvejelser på side 2