33 research outputs found
Data user's note: Apollo 15 lunar photography
Brief descriptions are given of the Apollo 15 mission objectives, photographic equipment, and photographic coverage and quality. The lunar photographic tasks were: (1) ultraviolet photography of the earth and moon; (2) photography of the gegenschein from lunar orbit; (3) service module orbital photographic tasks; and (4) command module photographic tasks
Quadrupolar Kondo Effect in Non-Kramers Doublet System PrInAg2
We performed ultrasonic measurement on the rare-earth intermetallic compound
PrInAg_2 to examine the quadrupolar Kondo effect associated with the
non-Kramers Gamma_3 doublet ground state. The characteristic softening of the
elastic constant (c_{11}-c_{12})/2 below 10 K in PrInAg_2 is attributed to a
Curie term in quadrupolar susceptibility for the quadrupole O_2^2=J_x^2-J_y^2
of the stable Gamma_3 ground state. (c_{11}-c_{12})/2 turns to a slight
increase with the -lnT dependence below 0.1 K, which suggests the quenching of
the quadrupolar moment in the quadrupolar Kondo state. Under applied magnetic
fields of 10 T and 15 T above 8.7 T corresponding to the Kondo temperature T_K
of ~ 0.86 K, the behavior of (c_{11}-c_{12})/2 is described in terms of
quadrupolar susceptibility for the stable 4f^2 state.Comment: PDF, 10pages + 5figures, Strongly Correlated Electron
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Hair-Cell Mechanotransduction Persists in TRP Channel Knockout Mice
<div><p>Members of the TRP superfamily of ion channels mediate mechanosensation in some organisms, and have been suggested as candidates for the mechanotransduction channel in vertebrate hair cells. Some TRP channels can be ruled out based on lack of an inner ear phenotype in knockout animals or pore properties not similar to the hair-cell channel. Such studies have excluded Trpv4, Trpa1, Trpml3, Trpm1, Trpm3, Trpc1, Trpc3, Trpc5, and Trpc6. However, others remain reasonable candidates. We used data from an RNA-seq analysis of gene expression in hair cells as well as data on TRP channel conductance to narrow the candidate group. We then characterized mice lacking functional Trpm2, Pkd2, Pkd2l1, Pkd2l2 and Pkd1l3, using scanning electron microscopy, auditory brainstem response, permeant dye accumulation, and single-cell electrophysiology. In all of these TRP-deficient mice, and in double and triple knockouts, mechanotransduction persisted. Together with published studies, these results argue against the participation of any of the 33 mouse TRP channels in hair cell transduction.</p></div