Correlation between TcT_c and anisotropic scattering in Tl2_2Ba2_2CuO6+δ_{6+\delta}

Angle-dependent magnetoresistance measurements are used to determine the isotropic and anisotropic components of the transport scattering rate in overdoped Tl$_2$Ba$_2$CuO$_{6+\delta}$ for a range of $T_c$ values between 15K and 35K. The size of the anisotropic scattering term is found to scale linearly with $T_c$, establishing a link between the superconducting and normal state physics. Comparison with results from angle resolved photoemission spectroscopy indicates that the transport and quasiparticle lifetimes are distinct.Comment: 5 pages, 3 figures, accepted for publication in Physical Review Letter

Universal stowage module for future space exploration, design drawings

For abstract, see N74-20534. For complete abstract, see

Backflushing system rapidly cleans fluid filters

Self contained unit can backflush filter elements in fraction of the time expended by presently used equipment. This innovation may be of interest to manufacturers of hydraulic and pneumatic systems as well as to chemical, food, processing, and filter manufacturing industries

Chemical Biology-Based Probes For The Labeling Of Targets On Live Cells

Proper detection is the key to studying any processes on the cellular scale. Nowhere is this more evident than in the tight space which confines the synaptic cleft. Being able to ascertain the location of receptors on live neurons is fundamental to our understanding of not only how these receptors interact and move inside the cell but also how neurons function. Most detection methods rely on significantly altering the receptor; both tagging with a fluorescent protein or targeting the receptor by a fluorescent reporter in the form of a small molecule causes significant difficulties. These localization techniques often result in forced dimerization, unnatural movement, and at worst inactivation of the receptor. Small molecule organic dyes provide a potential advantage because they can be structurally functionalized to target the protein of interest in a non-perturbing fashion which allows for information to be gathered about the targeted receptor. The work I initiated in the Chambers lab first focused on using a ligand directed fluorophore connected via a photo-labile linker. Through the use of epifluorescence microscopy, I determined that this probe targets glutamate receptors, however questions about subtype inclusion could not be addressed The pharmacophore that our first probe is based on could be much more promiscuous than is presently appreciated in the field of neurobiology. Thus, we designed a new series of probes to allow for covalent modification and affinity purification of endogenous receptors. The second generation of probes set out to answer the questions left by the first. Purified proteins were subjected to SDS-PAGE analysis and could be applied to proteomic identification of receptors. In addition to ligand directed probes, we have also initiated a project on a new, bimolecular photoaffinity probe in which the new methodology continues to develop. The initial studies were performed to ensure that our new strategy is able to be used in biological systems

Geology of the Orrs Island 7 1/2\u27 Quadrangle and Adjacent Area

Guidebook to field trips in southern Maine; 57th meeting, October 8-10, 1965, held at Bowdoin College: Trip

Bedrock geology of the Portland West quadrangle, Maine

Maine Geological Survey, Open-File Map 03-94https://digitalmaine.com/mgs_maps/1033/thumbnail.jp