Selective school-based alcohol prevention programs targeting youth with personality risk factors for addiction and mental health problems have been found to reduce substance use and misuse in those with elevated personality profiles. Objectives: To report 24-month outcomes of the Teacher-Delivered Personality-Targeted Interventions for Substance Misuse Trial (Adventure trial) in which school staff were trained to provide interventions to students with 1 of 4 high-risk (HR) profiles: anxiety sensitivity, hopelessness, impulsivity, and sensation seeking and to examine the indirect herd effects of this program on the broader low-risk (LR) population of students who were not selected for intervention. Design: Cluster randomized controlled trial.
We present velocity spectra measured in three cryogenic liquid 4He steady
flows: grid and wake flows in a pressurized wind tunnel capable of achieving
mean velocities up to 5 m/s at temperatures above and below the superfluid
transition, down to 1.7 K, and a "chunk" turbulence flow at 1.55 K, capable of
sustaining mean superfluid velocities up to 1.3 m/s. Depending on the flows,
the stagnation pressure probes used for anemometry are resolving from one to
two decades of the inertial regime of the turbulent cascade. We do not find any
evidence that the second order statistics of turbulence below the superfluid
transition differ from the ones of classical turbulence, above the transition.Comment: 13 pages, 9 figure
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