Flow induced force of labyrinth seal

Flow induced instability force due to a labyrinth seal is analyzed. An approximate solution is given for the partial differential equation representing the flow in labyrinth seal and it is compared with the finite difference method in order to verify the accuracy of both methods. The effects of difference of inlet and outlet pressures of the seal, deflection of pressure and mass flow from the steady state, rotor diameter, seal clearance, seal interval and seal number on the flow induced force of the seal are investigated and it is known that some of these factors are very influential on the flow induced force

Geochemical Results from a Rock Geochemical Survey in the Mount Belknap Caldera Vicinity, Utah

Rock, stream-sediment, and hydrogeochemical surveys were conducted in the Mount Belknap caldera area, south-central Utah, during the summer of 1979. The presence of leucocratic rocks and relatively high concentrations of the elements Nb, Be, Ga, Y, Pb, Sn, Mo, and F with corresponding low concentrations of the elements Ba, Mg, Ca, Fe, Sr, and Cu suggests that late phase highly differentiated felsic magmas were intruded and (or) erupted in the caldera vicinity. The presence of Mo and Sn in the rocks and F in the water samples suggest that the ore elements were concentrated, first in residual fluids in the magma and possibly later in epigenetic mineral deposits. The data suggest several target areas for further exploration

Energy landscape of relaxed amorphous silicon

We analyze the structure of the energy landscape of a well-relaxed 1000-atom model of amorphous silicon using the activation-relaxation technique (ART nouveau). Generating more than 40,000 events starting from a single minimum, we find that activated mechanisms are local in nature, that they are distributed uniformly throughout the model and that the activation energy is limited by the cost of breaking one bond, independently of the complexity of the mechanism. The overall shape of the activation-energy-barrier distribution is also insensitive to the exact details of the configuration, indicating that well-relaxed configurations see essentially the same environment. These results underscore the localized nature of relaxation in this material.Comment: 8 pages, 12 figure

A PET Study of Memory for Future Plan

開始ページ、終了ページ: 冊子体のページ付

Functions of Parahippocampal Regions and Frontal Lobes in Alternative Judgment of Novelty and Familiarity for Auditorily Presented Words

開始ページ、終了ページ: 冊子体のページ付

Validity and Reliability of the Counseling Center Assessment of Psychological Symptoms‐Japanese

To identify students who are struggling with mental distress and provide them with early and appropriate support, a valid and reliable multidimensional measure is required. The aim of this study was to investigate the convergent validity and the test–retest reliability of the Counseling Center Assessment of Psychological Symptoms-Japanese (CCAPS-Japanese). For the validity examination, 1,627 undergraduate students were randomized into five groups. Each group completed one of five questionnaires, comprised of the CCAPS-Japanese along with one, two, or three validation scales depending on the group. For the reliability examination, a total of 184 and 106 students completed the CCAPS-Japanese at one-week and two-week intervals, respectively. In the validity study, the highest correlation for each CCAPS-Japanese subscale was found to exist with its referent measure except for the Generalized Anxiety subscale. In the reliability study, correlations for subscale scores at test and retest were significant, ranging from .66 to .88. These findings suggest that the 55-item CCAPS-Japanese is applicable for use with Japanese university students.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/175456/1/jpr12345_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/175456/2/jpr12345.pd