Reference incidence angles in constant stagger cascades

Fortran 4 computer program for design application of stagger angle replacing inlet flow angle for given blade cascad

170426_dataset_EWTEC

This dataset contains the research materials suporting the paper with title "Hydrodynamic response of a jacket-frame mounted WEC sub-system of a novel hybrid wind-wave energy converter", published in the proceedings of the 12th European Wave and Tidal Energy Conference (EWTEC) 2017

NIVEAUX DE SPINS ELEVES OBTENUS PAR REACTIONS (α, 2nγ)

Par réactions (α, 2nγ) sur des cibles de Tm et Lu on excite les niveaux de 171Lu et 177Ta. Les différentes bandes de rotation sont identifiées.By means of (α, 2nγ) reactions on Tm and Lu targets the levels of 171Lu and 171Ta are excited. Assignments have been made for the rotational bands

Low cost (audio) recording (LCR) for advancing soundscape ecology towards the conservation of sonic complexity and biodiversity in natural and urban landscapes

Low cost (audio) recorders (LCRs) represent a new opportunity to investigate the sonic complexity of both natural and urban ecosystems. LCRs are inexpensive sampling audio recorders which have the external shape of a universal serial bus (USB) flash drive, and are composed of a microphone, an analog-to-digital converter, central processing unit with permanent internal non-volatile memory, rechargeable battery, and a USB connection. The reduced dimen­sions allow the device to be deployed inconspicuously within any environment, in any config­uration and for an extended time period. This investigation tested a specific type of LCR (UR-09) with a spectral range of 8 kHz -sufficient to cover the acoustic range of most western Palearctic songbirds. The reliability of the UR-09, compared with other commercial recorders (Zoom H4 and Song Meter SM1) and based on the quality of recordings quantified by the Acoustic Complexity Index (ACI), was tested and confirmed. An example of the application of LCRs is presented in an evaluation of the audio patterns occurring during dawn and dusk choruses within a forested ecosystem. Results of this investigation are encouraging and a new generation of LCR devices is currently being designed with real-time acoustic data processing capabilities, timer programmability, a larger frequency range and wireless communication compatibility. LCRs are revealed to be ideal instruments to conduct surveys in fragile or protected areas and also in urban environments. Moreover, due to their low cost, they can be used to encourage research in soundscape ecology, especially within developing countries, where large areas can be monitored by professionals or incorporating citizen science models of data collection. Keywords Soundscape ecology . Low cost (audio) recorders . Acoustic complexity index . Acoustic monitoring . Citizen science . Urban ecosystem