The exploration of novel functional carbon polymorphs is an enduring topic of scientific investigations. In this paper, we present simulations demonstrating metastable carbon phases as the result of pressure induced carbon nanotube polymerization. The configuration, bonding, electronic, and mechanical characteristics of carbon polymers strongly depend on the imposed hydrostatic/non-hydrostatic ...

This paper presents a generalized formulation for the problem of buckling optimization of anisotropic, radially graded, thin-walled, long cylinders subject to external hydrostatic pressure. The main structure to be analyzed is built of multi-angle fibrous laminated composite lay-ups having different volume fractions of the constituent materials within the individual plies. This yield to a piece...

Hydrostatic pressure is a well-known method for studying protein dynamics and hydration. Recent developments in molecular biology allow us to obtain and investigate recombinant proteins from deep-sea organisms living in high-pressure environments. The aims of this review are to give a brief introduction of the thermodynamic principles of pressure effects on proteins and to highlight the effects...

The problem is that to date there no general theory of the granular state matter in a closed form. However, are some well-developed models use, for example, representation continuous environment. Typical bulk material large conglomeration micro-mechanical particles different sizes and shapes interact with each other walls contain containers by mainly repulsive forces direct mechanical contact (...

The thermodynamics of diffusion under hydrostatic pressure and nonhydrostatic stress is presented for single crystals free of extended defects. The thermodynamic relationships obtained permit the direct comparison of hydrostatic and biaxial stress experiments and of atomistic calculations under hydrostatic stress for any proposed mechanism. Atomistic calculations of the volume changes upon poin...

Endolymphatic pressure measurement is of interest both to researchers in the physiology and pathophysiology of hearing and ENT physicians dealing with Menière's disease or similar conditions. It is generally agreed that endolymphatic hydrops is associated with Menière's disease and is accompanied by increased hydrostatic pressure. Endolymphatic pressure, however, cannot be measured precisely wi...

We are describing an arthroscopy tip, which is helpful in suspected/diagnosed cases of intra-articular haemangioma of the knee. Intra-articular haemangiomas of the knee are a rare but known condition. Arthroscopy or MRI can be used for diagnosis. Arthroscopy was performed in a case of haemangioma diagnosed on MRI performed for anterior knee pain. Appearances of the haemangioma were entirely dif...

In order to explore the graphitization of inertinite, this paper conducted high-temperature thermal simulation experiments (HTT) and high-pressure (HTHP) on isolated samples enriched in inertinite. X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) were used analyze process ① Results HTT: inertinite has a “threshold condition” with temperature threshold ranging ...

Previous studies have shown that the elevation of renal interstitial hydrostatic pressure by the direct expansion of renal interstitial volume increases urinary sodium excretion. The objective of the present study was to investigate whether proximal tubules respond to the elevated renal interstitial hydrostatic pressure and whether the inhibition of prostaglandin synthesis would alter the effec...

Membrane retrieval following exocytosis in synaptic terminals is fast and compensatory, however, little is known about the factors that regulate or contribute to this special form of endocytosis. We used whole-terminal capacitance measurements to examine the effect of hydrostatic pressure on compensatory endocytosis in single synaptic terminals of retinal bipolar neurons. We report that a small...