We report on the variation of a methyl tunnel splitting with pressure. The measurements are the first studies of thepressure variation of a methyl tunnel splitting using low-field, of order 80 gauss, dipole-dipole driven NMR spectroscopywith rapid field-cycling. Pressures up to 1.8kbar were applied with an operating temperature of 4.2K. In addition protonspin-lattice relaxation time...

Wind tunnel to Atmospheric Mapping (WAM) is a methodology for scaling and testing a static aeroelastic wind tunnel model. The WAM procedure employs scaling laws to define a wind tunnel model and wind tunnel test points such that the static aeroelastic flight test data and wind tunnel data will be correlated throughout the test envelopes. This methodology extends the notion that a single test co...

ABSTRACT A low-density wind tunnel called the Mars wind tunnel, has been developed at Tohoku University that can produce a high subsonic flow at low pressures for aerodynamic measurements of low-Reynolds-number aircraft wings aimed at developing aircraft applicable to the atmosphere on the planet Mars. Accurate surface pressure measurements on the wing are essential for analysis of not only aer...

The relative roles of pressure deformation and ischaemia in the production of compression nerve lesions remain a controversial issue. This paper concerns the genesis of the structural changes which follow compression of the median nerve in the carpal tunnel. The initial lesion is an intrafunicular anoxia caused by obstruction to the venous return from the funiculi as the result of increased pre...

OBJECTIVE To develop work guidelines for wrist posture based on carpal tunnel pressure. BACKGROUND Wrist posture is considered a risk factor for distal upper extremity musculoskeletal disorders, and sustained wrist deviation from neutral at work may be associated with carpal tunnel syndrome. However, the physiologic basis for wrist posture guidelines at work is limited. METHODS The relation...

Nonanatomic placement of the posterior horn may occur during arthroscopic implantation of a meniscal transplant. The objective of this study was to determine whether nonantomic placement adversely affects the contact pressure distribution on the medial tibial plateau. Medial meniscal autografts were placed in eight cadaveric knees with the posterior horn tunnel in nonanatomic locations (5 mm me...

One of the main issues involved during tunnel construction with tunnel boring machines is the tail gap grouting. This gap is between the external diameter of tunnel lining and the excavation boundary that is filled with high-pressure grouting materials. In this work, three different approaches of gap grouting modeling in the FLAC3D software are investigated with a special attention to the...