The large diffusion coefficients of gases result in significant spin motion during the application of gradient pulses that typically last a few milliseconds in most NMR experiments. In restricted environments, such as the lung, this rapid gas diffusion can lead to violations of the narrow pulse approximation, a basic assumption of the standard Stejskal-Tanner NMR method of diffusion measurement...

In arid and semi-arid regions, soil surface warming is a considerable phenomenon causing a high thermal gradient which makes water flow intensely. The degree of soil temperature is effective on crop production, plant growth and soil microorganisms. In recent years, the ascending trend of temperature has been substantially noticed by researchers in the issues of pointwise climate change and at w...

Manipulation-free and autonomous recording of temperature states for extended periods time is increasing importance food spoilage battery safety assessment. An optical readout preferred low-tech visual inspection. Here, a concept time–temperature integrators based on colloidal crystals introduced. Two unique features in this class advanced materials are combined: 1) the film-formation kinetics ...

• Experiments of the spreading a liquid film generated by high pressurized spray impacting wall. The pressure, distance to wall, time injection and temperature are varied. radius follows t 1 / 2 evolution during spreading. results from balance between radial pressure gradient viscous friction inside film. Once is shut down, relaxation observed due dissipation momentum n-decane induced impingeme...

We investigated left ventricular (LV) early diastolic filling in 10 normal conscious dogs that had been previously instrumented to measure LV and left atrial (LA) pressures and three orthogonal LV internal dimensions. LV volume was calculated as a general ellipsoid. The pressure within a passive structure increases as it is filled. If myocardial relaxation is rapid enough to substantially aid L...

Thermo-Elasto-Plastic analyses of thick-walled spherical tanks made of functionally graded materials are investigated analytically. These tanks are subjected to positive or negative temperature gradient and internal pressure loadings separately or simultaneously. The power law modeling has been used for through-the-thickness variation of mechanical properties. von Mises yield criterion and Elas...

An impedance-based temperature estimation method is investigated considering the electrochemical non-equilibrium with short-term relaxation time for facilitating the vehicular application. Generally, sufficient relaxation time is required for battery electrochemical equilibrium before the impedance measurement. A detailed experiment is performed to investigate the regularity of the battery impe...

Introduction Quantitative MR techniques have become increasingly on demand in human brain imaging. In particular, accurate mapping of the longitudinal relaxation time, T1, and water content, M0, is of prime interest pushing the development of techniques with high spatial resolution and short experimental durations. The current most efficient method for obtaining T1 maps is based on acquiring tw...