Pressotherapy with adjustable high-pressure gradients

Pressure Gradients without Obstruction

OBSTRUCTION to left ventricular outflow has been considered a characteristic and functionally important feature of "hypertrophic subaortic stenosis." The presence of obstruction has been inferred from the finding of a pressure gradient within the left ventricle during catheterization of the left heart in certain patients with idiopathic left ventricular hypertrophy. Indeed, the disease was not ...

Malfunction of an adjustable pressure limit valve.

EDITOR: We report the malfunction of an adjustable pressure limit (APL) valve on a KION (Siemens, SiemensElema AB, Solna, Stockholm, Sweden) anaesthesia workstation which occurred twice. The first time, the malfunction was detected during the pre-use manual check, but not by the automatic self-check. The second time, the malfunction occurred intermittently during ventilation of a patient but it...

Malfunction of adjustable pressure limiting valve

Multiscale architectured materials with composition and grain size gradients manufactured using high-pressure torsion

The concept of multiscale architectured materials is established using composition and grain size gradients. Composition-gradient nanostructured materials are produced from coarse grained interstitial free steels via carburization and high-pressure torsion. Quantitative analyses of the dislocation density using X-ray diffraction and microstructural studies clearly demonstrate the gradients of t...

High Resolution Cochlear Imaging with Dual Gradients

Introduction: The diagnosis of inner ear pathology has been historically subjective. High resolution MRI of the temporal bone enables the diagnosis of certain diseases such as acoustic neuroma and cochlear fibrosis. Resolution of the fine ultrastructure of the cochlea remains elusive given the limits of standard MRI gradient systems. Endolymphatic hydrops, the pathologic inner ear state associa...