Results 71 to 80 of about 49,061 (265)

Modeling of transpiration reduction in van Genuchten-Mualem type soils

open access: yes, 2009
We derive an analytic expression for the matric flux potential (M) for van Genuchten-Mualem (VGM) type soils which can also be written in terms of a converging infinite series.
Metselaar, K.   +6 more
core   +1 more source

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

open access: yesAdvanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk   +3 more
wiley   +1 more source

Surface tension effects on the hydraulic conductivity of hydrophobic porous media

open access: yesGeoderma
Under certain conditions of natural or anthropogenic origin, the wettability properties of soils change from hydrophilic to hydrophobic. Such a transition results in substantial changes in water flow dynamics and soil hydraulic properties.
Jingru He   +5 more
doaj   +1 more source

Application of Evaporation Method Using Two Tensiometers for Determining Unsaturated Hydraulic Conductivity beyond Tensiometric Range [PDF]

open access: yes
Accurate determination of unsaturated hydraulic conductivity in low pressure head range is critical for predicting evaporation rate under localized irrigation or root water uptake under drought stress conditions.
100000694   +7 more
core   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

hydraulic conductivity

open access: yes, 2021
Most classical predictive models of hydraulic conductivity rely on pore bundle concept that only accounts for capillary flow and neglects the water film flow.
Ming, F (via Mendeley Data)
core   +1 more source

Droplet Electricity Generators With Maximized Energy Collection Zone Enabled by Aloe‐Inspired Midrib and Cuticle

open access: yesAdvanced Materials, EarlyView.
An Aloe‐pinspired droplet electricity generator (A‐DEG) overcomes the limited energy collection zone of conventional DEGs by guiding impact droplets through a channeling midrib and artificial cuticle. The channeling midrib induces uni‐directional droplet spreading, while the artificial cuticle on the midrib further reinforces this behavior through its ...
Gibeom Lee   +8 more
wiley   +1 more source

A new hydraulic conductivity model of frozen soil considering the hysteresis effect based on fractal theory

open access: yesGeoderma
The hydraulic conductivity of frozen soil is crucial for predicting water migration and frozen heave. Many models have been proposed to estimate the hydraulic conductivity, which involves factors such as unfrozen water content, specific surface area ...
Feng Ming   +3 more
doaj   +1 more source

Compacted sand-bentonite mixtures for hydraulic containment liners [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2005
Sand is a pervious material in nature. Mixing sand with appropriate bentonite contents yields sandbentonite mixtures having low hydraulic conductivity that can be used as hydraulic containment liners.
Tanit Chalermyanont, Surapon Arrykul
doaj  

Impact of spatially varying hydraulic conductivities on tumor interstitial fluid pressure distribution

open access: yesInformatics in Medicine Unlocked, 2019
This work deals with numerical computation of the interstitial fluid pressure distribution for various synthetic tumor configurations in two spatial dimensions. In order to attend a reasonable degree of realism, we also consider asymmetric configurations
Seyedeh Shahrzad Rasouli   +2 more
doaj   +1 more source

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