scholarly journals Functional luminal imaging probe: a new technique for dynamic evaluation of mechanical properties of the anal canal

2012 ◽  
Vol 16 (6) ◽  
pp. 451-457 ◽  
Author(s):  
F. Luft ◽  
L. Fynne ◽  
H. Gregersen ◽  
F. Lundager ◽  
S. Buntzen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Anal Canal ◽  
New Technique ◽  
Dynamic Evaluation ◽  
Imaging Probe ◽  
Functional Luminal Imaging Probe ◽  
A New Technique

Mechanical deflection of cantilever microbeams: A new technique for testing the mechanical properties of thin films

1988 ◽  
Vol 3 (5) ◽  
pp. 931-942 ◽  
Author(s):  
T. P. Weihs ◽  
S. Hong ◽  
J. C. Bravman ◽  
W. D. Nix
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Mechanical Properties ◽  
Single Layer ◽  
Beam Theory ◽  
New Technique ◽  
Young’S Moduli ◽  
Silicon Micromachining ◽  
A New Technique

The mechanical deflection of cantilever microbeams is presented as a new technique for testing the mechanical properties of thin films. Single-layer microbeams of Au and SiO2 have been fabricated using conventional silicon micromachining techniques. Typical thickness, width, and length dimensions of the beams are 1.0,20, and 30 μm, respectively. The beams are mechanically deflected by a Nanoindenter, a submicron indentation instrument that continuously monitors load and deflection. Using simple beam theory and the load-deflection data, the Young's moduli and the yield strengths of thin-film materials that comprise the beams are determined. The measured mechanical properties are compared to those obtained by indenting similar thin films supported by their substrate.

A new technique for measuring the mechanical properties of thin films

1997 ◽  
Vol 6 (3) ◽  
pp. 193-199 ◽  
Author(s):  
W.N. Sharpe ◽  
B. Yuan ◽  
R.L. Edwards
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
New Technique ◽  
A New Technique

Videoendoscopic anoscopy: A new technique for examining the anal canal

1995 ◽  
Vol 42 (4) ◽  
pp. 351-354 ◽  
Author(s):  
Donald J. Lazas ◽  
Frank M. Moses ◽  
Roy K.H. Wong
Keyword(s):  
Anal Canal ◽  
New Technique ◽  
A New Technique

scholarly journals Measuring length-tension function of the anal sphincters and puborectalis muscle using the functional luminal imaging probe

2018 ◽  
Vol 315 (5) ◽  
pp. G781-G787 ◽  
Author(s):  
Lori J. Tuttle ◽  
Ali Zifan ◽  
Catherine Sun ◽  
Jessica Swartz ◽  
Sophia Roalkvam ◽  
...  
Keyword(s):  
Anal Canal ◽  
Anal Sphincter ◽  
Puborectalis Muscle ◽  
Sphincter Muscle ◽  
Anal Sphincters ◽  
Cross Sectional ◽  
Imaging Probe ◽  
Nulliparous Women ◽  
Functional Luminal Imaging Probe ◽  
Vaginal Canal

The functional luminal imaging probe (FLIP) has been used to measure the distensibility of the anal canal. We hypothesized that with increasing distension of the anal canal with FLIP there will be an increase in length of the anal sphincter muscle allowing measurement of the length-tension function of anal sphincter and puborectalis muscles (PRM). We studied 14 healthy nulliparous women. A custom-designed FLIP bag (30-mm diameter) was placed in the vagina and then in the anal canal, distended in 10-ml steps with volumes ranging from 30 to 90 ml. At each volume, subject performed maximal voluntary squeezes. Length-tension measurements were also made with a manometric probe system. Tension was calculated (pressure × radius) in Newtons per meter using a custom software program. Peak tensions at different FLIP volumes were compared with the manometric data. No change in the luminal CSA was noted at low fluid volumes; the sphincter muscles were able to fully collapse the FLIP bag within the anal canal/vagina even at rest. At larger volumes, with each squeeze there was an increase in the bag pressure and reduction in the cross-sectional area, which represents concentric contraction of the muscle. Both rest and squeeze tension increased with the increase in volume in the anal as well as vaginal canal indicating that the external anal sphincter and puborectalis muscles produce more tension when lengthened. FLIP device, which has been used to describe the distensibility of the anal canal can also provide information on the length-tension function of the anal sphincters and PRM. NEW & NOTEWORTHY The functional luminal imaging probe (FLIP) has been used to describe the distensibility of the anal canal. This report is the first to describe the use of the FLIP in the vaginal canal and the anal canal to provide information on the length-tension function of the anal sphincter and puborectalis muscles, which may provide clinicians with additional information regarding the active components of muscle contraction involved in the anal closure function.

The Production of High Density Cast Iron Tubes by Horizontally Continuous Casting

2012 ◽  
Vol 527 ◽  
pp. 3-8
Author(s):  
Stasys Bockus
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Chemical Composition ◽  
Continuous Casting ◽  
Wall Thickness ◽  
Casting Process ◽  
New Technique ◽  
Outer Diameter ◽  
Continuous Casting Process ◽  
A New Technique

In this paper, a new technique to produce cast iron tubes used for liners of auto engines has been developed and examined. The tubes with an outer diameter of 90 mm and a wall thickness of 14 mm were produced massively by horizontally continuous casting. There are the values of casting parameters and constructions of crystallizers recommended for the continuous casting process of cast iron tubes in our paper. The metallographic microstructure, chemical composition and the mechanical properties of the tubes were investigated. The results of our investigations were successfully used for producing cast iron tubes suitable for liners of auto engines.

Studies in the physical properties of soils: I. Mechanical properties concerned in cultivation

1925 ◽  
Vol 15 (2) ◽  
pp. 178-200 ◽  
Author(s):  
William B. Haines
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Soil Water ◽  
Surface Friction ◽  
New Technique ◽  
Case Methods ◽  
Soil Plasticity ◽  
Soil Cohesion ◽  
Method Of Measurement ◽  
A New Technique

The mechanical properties of soils which are concerned in ploughing are considered under the three heads:(1) Soil cohesion.(2) Soil plasticity.(3) Surface friction between soil and metal.In each case methods of measurements are discussed and experimental curves are given for representative soils over the whole moisture range with which the practical agriculturist is concerned.In the case of cohesion Atterberg's method of measurement is followed. A certain difference in character between his results and the author's is discussed.A new technique is described for measuring one of the plastic constants, which is specially adapted to clays, and throws fresh light on their physical characteristics.The measurements on soil friction open up a fresh subject, and promise to provide a sensitive means of investigating soil-water relationships from a new angle.

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