Study of a precise positioning system of the COMSS Altimetric Satellite/Radar

A satellite trajectory was reconstructed at an accuracy level of 5-10 centimeters. The reconstruction of the orbit at a level of 1 to 2 meters, and comparison of all results for the two altitudes, 650 and 850 km, are also considered

Gas levitator having fixed levitation node for containerless processing

A method and apparatus is disclosed for levitating a specimen of material in a containerless environment at a stable nodal position independent of gravity. An elongated levitation tube has a contoured interior in the form of convergent section, constriction, and a divergent section in which the levitation node is created. A gas flow control means prevents separation of flow from the interior walls in the region of a specimen. The apparatus provides for levitating and heating the specimen simultaneously by combustion of a suitable gas mixture combined with an inert gas

q_T Uncertainties for W and Z Production

Analysis of semi-inclusive DIS hadroproduction suggests broadening of transverse momentum distributions at small x below 1E-3 ~ 1E-2 which can be modeled in the Collins-Soper-Sterman formalism by a modification of impact parameter dependent parton densities. We investigate these consequences for the production of electroweak bosons at the Tevatron and the LHC. If substantial small-x broadening is observed in forward Z boson production in the Tevatron Run-2, it will strongly affect the predicted q_T distributions for W and Z boson production at the LHC.Comment: 4 pages, 2 figures; contribution to the XIII International Workshop on Deep Inelastic Scattering (DIS 2005

Sensitivity of future collider facilities to WIMP pair production via effective operators and light mediators

We present extrapolations of the current mono-jet searches at the LHC to potential future hadron collider facilities: LHC14, as well as $pp$ colliders with $\sqrt{s}=33$ or 100 TeV. We consider both the effective operator approach as well as one example of a light mediating particle

Self-similar solutions and collective coordinate methods for Nonlinear Schrodinger Equations

In this paper we study the phase of self-similar solutions to general Nonlinear Schr\"odinger equations. From this analysis we gain insight on the dynamics of nontrivial solutions and a deeper understanding of the way collective coordinate methods work. We also find general evolution equations for the most relevant dynamical parameter $w(t)$ corresponding to the width of the solution. These equations are exact for self-similar solutions and provide a shortcut to find approximate evolution equations for the width of non-self-similar solutions similar to those of collective coordinate methods

Lafora disease offers a unique window into neuronal glycogen metabolism

Lafora disease (LD) is a fatal, autosomal recessive, glycogen-storage disorder that manifests as severe epilepsy. LD results from mutations in the gene encoding either the glycogen phosphatase laforin or the E3 ubiquitin ligase malin. Individuals with LD develop cytoplasmic, aberrant glycogen inclusions in nearly all tissues that more closely resemble plant starch than human glycogen. This Minireview discusses the unique window into glycogen metabolism that LD research offers. It also highlights recent discoveries, including that glycogen contains covalently bound phosphate and that neurons synthesize glycogen and express both glycogen synthase and glycogen phosphorylase

SUSY QCD one-loop effects in (un)polarized top-pair production at hadron colliders

We study the effects of O(alpha_s) supersymmetric QCD (SQCD) corrections on the total production rate and kinematic distributions of polarized and unpolarized top-pair production in pp and p anti-p collisions. At the Fermilab Tevatron p anti-p collider, top-quark pairs are mainly produced via quark-antiquark annihilation, q anti-q -> t anti-t, while at the CERN LHC pp collider gluon-gluon scattering, g g -> t anti-t, dominates. We compute the complete set of O(alpha_s) SQCD corrections to both production channels and study their dependence on the parameters of the Minimal Supersymmetric Standard Model. In particular, we discuss the prospects for observing strong, loop-induced SUSY effects in top-pair production at the Tevatron Run II and the LHC.Comment: 56 pages, 29 figures, RevTeX

Neutrino-Nucleus Cross Section Measurements using Stopped Pions and Low Energy Beta Beams

Two new facilities have recently been proposed to measure low energy neutrino-nucleus cross sections, the nu-SNS (Spallation Neutron Source) and low energy beta beams. The former produces neutrinos by pion decay at rest, while the latter produces neutrinos from the beta decays of accelerated ions. One of the uses of neutrino-nucleus cross section measurements is for supernova studies, where typical neutrino energies are 10s of MeV. In this energy range there are many different components to the nuclear response and this makes the theoretical interpretation of the results of such an experiment complex. Although even one measurement on a heavy nucleus such as lead is much anticipated, more than one data set would be still better. We suggest that this can be done by breaking the electron spectrum down into the parts produced in coincidence with one or two neutrons, running a beta beam at more than one energy, comparing the spectra produced with pions and a beta beam or any combination of these.Comment: 6 pages, 6 figure

Utlegging av rene leirmasser i Bekkelagsbassenget - etterundersøkelse 2007

Rene leirmasser (30000 m3) fra graving av trasé for senketunnel i Oslo havn ble i januar og februar 2007 deponert fra splittlekter på ca 50 m dyp i Bekkelagsbassenget. Hensikten var å bli kvitt rene overskuddsmasser og overdekke forurensede sedimenter. I følge utslippstillatelsen skulle det etter deponeringen foretas en etterundersøkelse slik at eventuelle effekter/miljøgevinster kunne dokumenteres. I denne rapporten redegjøres det for resultatene fra etterundersøkelsen. Undersøkelsen omfatter biologisk registrering ved bruk av sedimentprofilkamera (SPI), analyser av miljøgifter i sediment og semikvantitativ kartlegging av bunnfauna ved bruk av ROV/undervannsvideo. Etterundersøkelsen ble gjennomført høsten 2007 med de samme metoder som førundersøkelsen. Førundersøkelsen ble utført høsten 2006. Resultatene viser at miljøgiftkonsentrasjonen i deponeringsområdet har gått betydelig ned etter deponeringen og for enkelte miljøgifter også utenfor selve deponiområdet. Det ble 6-8 måneder etter deponeringen ikke registrert noen tydelig øket nedslamming på hardbunn i omkringliggende områder selv om en betydelig spredning av partikler trolig har funnet sted under selve deponeringen. Deponeringen har gitt en klar miljøgevinst i Bekklagsbassenget i form av lavere miljøgiftkonsentrasjoner i overflatesedimentet. Deponeringen har trolig heller ikke ført til uheldige effekter av betydning for utslippsarrangementet til Bekkelaget renseanlegg