Results 211 to 220 of about 23,578 (252)

Cerebral Blood Flow under Pressure: Investigating Cerebrovascular Compliance with Phase-contrast Magnetic Resonance Imaging during Induced Hypertension. [PDF]

open access: yesAnesthesiology
Österlind J   +7 more
europepmc   +1 more source

Effects of weightlessness on the cardiovascular system: a systematic review and meta-analysis. [PDF]

open access: yesFront Physiol
Mendes Zambetta R   +6 more
europepmc   +1 more source
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Effects of meteorological factors and groundwater depths on plant sap flow velocities in karst critical zone

Science of the Total Environment, 2021
Determining water supply intensity of fracture/conduits is one of the difficulties involved in the research of plant transpiration water consumption in the Karst Critical Zone (KCZ). Our aims were to evaluate the effect of groundwater depth on plant sap flow velocities in KCZ.
Aijun Zhu
exaly   +3 more sources

The Dual Method Approach (DMA) Resolves Measurement Range Limitations of Heat Pulse Velocity Sap Flow Sensors [PDF]

open access: yesForests, 2019
Sap flow, the movement of fluid in the xylem of plants, is commonly measured with the heat pulse velocity (Vh) family of methods. The observable range of Vh in plants is ~−10 to ~+270 cm/h. However, most Vh methods only measure a limited portion of this range, which restricts their utility. Previous research attempted to extend the range of Vh methods,
Michael A Forster
exaly   +3 more sources

Evaluation of the heat pulse velocity technique for measurement of sap flow in rainforest and eucalypt forest species of south-eastern Australia

Plant, Cell and Environment, 1995
ABSTRACTSap flow in the stems of two cut saplings each of Eucalyptus maculata (a canopy eucalypt forest tree), Doryphora sassafras and Ceratopetalum apetalum (both canopy rainforest trees of south‐eastern coastal Australia) was measured by the heat pulse velocity technique and compared with water uptake from a potometer.
Damian J Barrett, Marilyn C Ball
exaly   +3 more sources

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