Re‐Exploration of Flow Rate in Low‐Flow, Low‐Gradient Aortic Stenosis [PDF]
Catheterization and Cardiovascular InterventionsABSTRACT Background Transaortic flow rate (TFR, mL/s) is an emerging hemodynamic index in aortic stenosis (AS), offering insights beyond stroke volume index (SVi). We evaluated the hemodynamic determinants and prognostic significance of TFR at rest and peak dobutamine stress in patients with ...
Sara Hungerford +5 more
openaire +4 more sources
Synergetics: The cooperative phenomenon in multi-compressions S-CO2 power cycles
Energy Conversion and Management: X, 2020 Mature power plant uses regenerative steam Rankine cycle to achieve excellent performance, but there is a lack of general approach for gas Brayton cycle. Here, synergetics is introduced to construct multi-compressions S-CO2 cycle for the first time.
Enhui Sun +5 more
doaj +1 more source
Verification and Validation of CFD Modeling for Low-Flow-Coefficient Centrifugal Compressor Stages
Energies, 2021 In this paper, the numerical model of a centrifugal compressor low-flow stage is verified. The gaps and labyrinth seals were simulated in the numerical model. The task was to determine the optimal settings for high-quality modeling of the low-flow stages.
Vycheslav Ivanov +4 more
doaj +1 more source
Hydrological Foundation as a Basis for a Holistic Environmental Flow Assessment of Tropical Highland Rivers in Ethiopia [PDF]
, 2020 The sustainable development of water resources includes retaining some amount of the natural flow regime in water bodies to protect and maintain aquatic ecosystem health and the human livelihoods and wellbeing dependent upon them.
Abebe, Wubneh B. +10 more
core +2 more sources
How to Construct a Combined S-CO2 Cycle for Coal Fired Power Plant?
Entropy, 2018 It is difficult to recover the residual heat from flue gas when supercritical carbon dioxide (S-CO2) cycle is used for a coal fired power plant, due to the higher CO2 temperature in tail flue and the limited air temperature in air preheater. The combined
Enhui Sun +4 more
doaj +1 more source
Assessment of Streamflow Drought Based on Truncation Level (TL) Using Permanent Streamflow Data in one of the Sub-Basin of Lut Desert, Iran [PDF]
مخاطرات محیط طبیعی, 2020 Drought is known as one of the main natural hazards especially in arid and semi-arid regions where there are considerable issues in regard to water resources management. The focus of the present study is mainly on hydrological aspects of drought.
Hamid Nazaripour +3 more
doaj +1 more source
Migration in drought: Receding streams contract the seaward migration window of endangered salmon
Ecosphere, 2022 Prolonged migration windows buffer migratory animal populations against uncertainty in resource availability. Understanding how intensifying droughts from climate change influence the migration window is critical for biodiversity conservation in a ...
Brian Kastl +4 more
doaj +1 more source
Energies, 2023 The pressure drop for air-water two-phase flow in pipeline systems with S-shaped and vertical risers at various inclinations (−1°, −2°, −4°, −5° and −7° from horizontal) was predicted using an artificial neural network (ANN).
Xinping Li +5 more
doaj +1 more source
Change of inspired oxygen concentration in low flow anesthesia [PDF]
Anesthesia and Pain Medicine, 2020 Background There are several advantages of low flow anesthesia including safety, economics, and eco-friendliness. However, oxygen concentration of fresh gas flow and inspired gas are large different in low flow anesthesia.
Jiwook Kim +5 more
doaj +1 more source
Low flow controls on benthic and hyporheic macroinvertebrate assemblages during supra-seasonal drought [PDF]
, 2009 Despite the widely accepted importance of the hyporheic zone as a habitat for stream macroinvertebrates during floods, few data exist regarding community composition and distribution during periods of low flow or drought in perennial streamsi ...
Acuna +65 more
core +2 more sources