A summary of the records on the purebred Jersey dairy herd at the West Tennessee Experiment Station from 1928 to 1952

This study was made to determine the necessary records to keep and the effects of certain management decisions on the future herd. This study has covered a period of time sufficient to reduce environmental effects to a bare minimum; therefore the results expected under certain management changes for Tennessee dairymen could be expected to follow a similar pattern

Searching for Dark Photons with Maverick Top Partners

In this paper, we present a model in which an up-type vector-like quark (VLQ) is charged under a new $U(1)_d$ gauge force which kinetically mixes with the SM hypercharge. The gauge boson of the $U(1)_d$ is the dark photon, $\gamma_d$. Traditional searches for VLQs rely on decays into Standard Model electroweak bosons $W,Z$ or Higgs. However, since no evidence for VLQs has been found at the Large Hadron Collider (LHC), it is imperative to search for other novel signatures of VLQs beyond their traditional decays. As we will show, if the dark photon is much less massive than the Standard Model electroweak sector, $M_{\gamma_d}\ll M_Z$, for the large majority of the allowed parameter space the VLQ predominately decays into the dark photon and the dark Higgs that breaks the $U(1)_d$ . That is, this VLQ is a `maverick top partner' with nontraditional decays. One of the appeals of this scenario is that pair production of the VLQ at the LHC occurs through the strong force and the rate is determined by the gauge structure. Hence, the production of the dark photon at the LHC only depends on the strong force and is largely independent of the small kinetic mixing with hypercharge. This scenario provides a robust framework to search for a light dark sector via searches for heavy colored particles at the LHC.Comment: 40 pages and 11 figure

I-adic towers in topology

A large variety of cohomology theories is derived from complex cobordism MU^*(-) by localizing with respect to certain elements or by killing regular sequences in MU_*. We study the relationship between certain pairs of such theories which differ by a regular sequence, by constructing topological analogues of algebraic I-adic towers. These give rise to Higher Bockstein spectral sequences, which turn out to be Adams spectral sequences in an appropriate sense. Particular attention is paid to the case of completed Johnson--Wilson theory E(n)-hat and Morava K-theory K(n) for a given prime p.Comment: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol5/agt-5-65.abs.htm

Soluble modulators of intermolecular interactions in proteins and lipid rafts

The nonspecific binding of proteins to various biological and non-biological surfaces has limited the potential of several detection techniques such as surface plasmon resonance (SPR), Luminex and ELISA (among others). Plasma proteins have been shown to decrease the sensitivity of instruments when working with complex fluids such as blood samples. This study examines the binding properties of several plasma proteins to a range of surfaces and utilises reagents in the media to eliminate the nonspecific binding of the plasma proteins. This has created a set of conditions that can reduce the nonspecific binding interaction, without affecting the specific interactions which the various techniques measure. These mechanisms were then applied to the assembly/disassembly of membrane microdomains. Membrane microdomains have been shown to be affected by from several factors such as acyl-chain length and temperature. This study demonstrates how reagents in the media can affect the assembly of these domains. We proposed a novel mechanism for the regulation of the domains, in which the reagents alter the intermolecular interactions between lipid head groups by altering the water network around these domains to promote domain assembly. These results that could have significant ramifications for the functional characterisation of membrane microdomains and the proteins that are known to associate with them. Finally, membrane binding affinity and kinetics of different polypeptides with various lipid membrane composition were characterised and resultant microdomains were monitored. Demonstrating how the previously uncontrolled, soluble factors in a model system can control the intermolecular interactions that occur in the system that is being measured