Electromagnetic Waves and Fluid Mechanical Theory

The cause for the Navier-Stokes constant values are in my research because of the Schumann Resonance. “Earth’s Frequency.” It is because of this frequency that there is balance at all in the Navier-Stokes equations. If these frequencies could be quantified, a neural network could even be made containing such EM frequencies of 8 hertz resulting in a possible unknown Network like that of even Ted Nelson’s theorized wireless network, “Xanadu.” With the Navier-Stokes equations proven Ted Nelson’s Xanadu Project could even be created if quantified.

Anchoring and migration of balloon in REBOA

A mechanical theory is described for a phenomenon in the surgical procedure of resuscitative endovascular balloon occlusion of the aorta (REBOA). In this procedure a balloon is pushed into the aorta by a catheter and then inflated in order to stop haemorrhage. One of the hazards of this procedure is the tendency for the balloon to migrate away from its intended position. This work examines the mechanics of balloon anchoring and migration by analysing the effects of pressure waves, the sheet flow and solid friction in the thin gap between the walls of the aorta and balloon. A viscoelastic model is adopted for the aorta wall for pressure waves between the left ventricle and the balloon. The lubrication approximation is used for blood flow in the thin gap between the walls of the balloon and aorta. Samples of quantitative predictions are discussed on how the inflation pressure and balloon characteristics affect the balloon anchoring and migration. The crucial roles of solid friction and balloon placement are pointed out, which should help in guiding the manufacturing of balloons and their usage in the field.

Spin relaxation: under the sun, anything new?

Spin relaxation has been at the core of many studies since the early days of NMR, and the undelying theory worked out by its founding fathers. However, this theory has been recently questioned (Bengs and Levitt (2020)) in the light of Linblad theory of quantum Markovian master equations. In this article, we review the conventional approach of quantum mechanical theory of NMR relaxation and show that under the usual assumptions, it is equivalent to the Linblad formulation. We also comment on the debate over semi-classical versus quantum versions of spectral density functions involved in relaxation.

On the question of rare forms of ectopic pregnancy (graviditas fimbrialis and graviditas interstitialis)

From the point of view of the mechanical theory explaining the occurrence of an ectopic pregnancy by a violation of the transport of the egg cell, the first stage where an ectopic inoculation of an egg can occur will be the inner surface of the follicle itself, in which this egg has matured. The possibility of such an intrafollicular ovarian pregnancy has been proven by the well-known case of C. van Tussenbroeck1) and recently confirmed by the observation of Hoehne2). In such cases, the release of the egg from the follicle cavity does not occur at all.

Hierarchical transitions and fractal wrinkling drive bacterial pellicle morphogenesis

Bacterial cells can self-organize into structured communities at fluid–fluid interfaces. These soft, living materials composed of cells and extracellular matrix are called pellicles. Cells residing in pellicles garner group-level survival advantages such as increased antibiotic resistance. The dynamics of pellicle formation and, more generally, how complex morphologies arise from active biomaterials confined at interfaces are not well understood. Here, using Vibrio cholerae as our model organism, a custom-built adaptive stereo microscope, fluorescence imaging, mechanical theory, and simulations, we report a fractal wrinkling morphogenesis program that differs radically from the well-known coalescence of wrinkles into folds that occurs in passive thin films at fluid–fluid interfaces. Four stages occur: growth of founding colonies, onset of primary wrinkles, development of secondary curved ridge instabilities, and finally the emergence of a cascade of finer structures with fractal-like scaling in wavelength. The time evolution of pellicle formation depends on the initial heterogeneity of the film microstructure. Changing the starting bacterial seeding density produces three variations in the sequence of morphogenic stages, which we term the bypass, crystalline, and incomplete modes. Despite these global architectural transitions, individual microcolonies remain spatially segregated, and thus, the community maintains spatial and genetic heterogeneity. Our results suggest that the memory of the original microstructure is critical in setting the morphogenic dynamics of a pellicle as an active biomaterial.