Rapid increases in activities and components of mitochondrial particles isolated from cotyledons of Pisum sativum var. Alaska during the early stage of germination are described. Respiratory rate of the cotyledons increased rapidly as hydration proceeded. A similar but slightly delayed increase in respiratory activity of the isolated mitochondrial fraction was observed. The respiratory control ...

Several methods are compared for the detection of moving capillary fronts in spontaneous imbibition experiments where water invades dry porous rocks. These methods are: (i) the continuous monitoring of the mass increase during imbibition, (ii) the imaging of the water front motion using X-ray CT scanning, (iii) the use of ultrasonic measurements allowing the detection of velocity, amplitude and...

Thermodynamics and hydrodynamics of spontaneous forced imbibition liquid into conical capillaries are studied to assess the feasibility a diode. The analytical formulas for Laplace pressure critical Young's contact angle capillary onset derived using classical model thermodynamics. below which can occur belongs hydrophilic region with diverging radius while it hydrophobic converging radius. Thu...

Several sugar mills in southern Africa have adverse fuel balances for various reasons, and end up burning enormous amounts of coal. Some of the reasons for this are discussed, and two in particular are analysed in detail: time efficiency and imbibition. The variables that are directly related to the energy efficiency of a sugar mill are listed and their relative effects are discussed. The effec...

We study the effect of weak vibrations on the imbibition of water in granular media. In our experiments, we have observed that as soon as the vibration is applied, an initially pinned wetting front advances in the direction of imbibition. We found that the front motion is governed by the avalanches of localized intermittent advances directed at 45° to the imbibition direction. When the rescaled...

The fluid distribution as a function of height in transition zones is often very complex. This may be due to movement of water-oil contact, tilting of the reservoir at some point in time, leak of fluid out of the reservoir zone or complex inflow during secondary migration. The resultant fluid distribution seen in saturation logs may be difficult to model. In this paper we address the changes in...

Some major hydrocarbon-bearing basins are rich in shale with terrestrial facies China, which may provide abundant oil and gas resources. This work studied the Jurassic Lianggaoshan Formation Southeast Sichuan Basin of upper Yangtze Region. Core samples were chosen for total organic carbon content mineral composition analyses to classify lithofacies. Afterward, pore connectivity, wettability, mo...

We present a numerical study on the dynamics of imbibition fronts in porous media using a pipe network model. This model quantitatively reproduces the anomalous scaling behavior found in imbibition experiments [Phys. Rev. E 52, 5166 (1995)]. Using simple scaling arguments, we derive a new identity among the scaling exponents in agreement with the experimental results.