An automatic measurement setup for outer diameter of inner conductor in coaxial air lines

Conventional SAD patterns as obtained in the TEM present difficulties for identification of materials such as asbestiform minerals, although diffraction data is considered to be an important method for making this purpose. The preferred orientation of the fibers and the spotty patterns that are obtained do not readily lend themselves to measurement of the integrated intensity values for each d-spacing, and even the d-spacings may be hard to determine precisely because the true center location for the broken rings requires estimation. We have implemented an automatic method for diffraction pattern measurement to overcome these problems. It automatically locates the center of patterns with high precision, measures the radius of each ring of spots in the pattern, and integrates the density of spots in that ring. The resulting spectrum of intensity vs. radius is then used just as a conventional X-ray diffractometer scan would be, to locate peaks and produce a list of d,I values suitable for search/match comparison to known or expected phases.

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Structure of rattlesnake venom lectin determined by single particle high-resolution electron microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100162776 ◽

1996 ◽

Vol 54 ◽

pp. 62-63

Author(s):

Peter D. Moisiuk ◽

Daniel R. Beniac ◽

Ross A. Ridsdale ◽

Martin Young ◽

Bhushan Nagar ◽

...

Keyword(s):

High Resolution Electron Microscopy ◽

Lipid Monolayer ◽

Outer Diameter ◽

X Ray Diffraction ◽

Single Particles ◽

Crotalus Atrox ◽

3D Reconstructions ◽

X Ray ◽

Rattlesnake Venom ◽

Covalently Linked

Venom from the rattlesnake Crotalus atrox contains a mixture of enzymes that induce a localized effect leading to hemorrhaging, necrosis and edema. As a member of the crotalid family of snake venoms, Crotalus atrox venom contains a C-type lectin that will agglutinate blood cells in a Ca2+-dependent fashion. The lectin is a hydrophilic protein, consisting of two covalently linked, 135 amino acid residues, identical subunits that are rich in aspartic acid, glutamic acid and lysine. Sequence homology with known carbohydrate recognition domains (CRDs) indicates that rattlesnake venom lectin (RSLV) contains a CRD motif that is not linked to accessory domains. Preliminary X-ray diffraction and sedimentation analysis has indicated that lectin from Crotalus atrox forms decamers composed of two five-fold symmetric pentamers. Single particles of RSVL imaged at – 171°C displayed two distinct orientations on the specimen support (Figure a) following incubation in a crystallization Teflon well, coated with a lipid monolayer consisting of phosphatidylcholine and monosialoganglioside. When lying in an end-on orientation, the lectin exhibited a “pentagonal ring” with an outer diameter of 6.7 nm and an inner hollow core of 1.7 nm. A side orientation was also seen, whereby a thickness of 5.8 nm was measured for the lectin. Image processing of 2280 single particles placed in 100 classes (Figure b) led to 3D reconstructions of RSVL (Figure c). Density limited 3D reconstructions showed the lectin to be made of two five-fold symmetrical rings covalently linked between the five subunits that constitute each ring of this homodimer. These results are consistent with sedimentation and preliminary X-ray diffraction analysis on the shape of RSVL and provide the framework for structural verification by 2D electron crystallography.

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Automated software supported versus manual aorto-iliac diameter measurements in CT angiography of patients with abdominal aortic aneurysms: Assessment of inter- and intraobserver variation

VASA ◽

10.1024/0301-1526.34.4.255 ◽

2005 ◽

Vol 34 (4) ◽

pp. 255-261 ◽

Cited By ~ 16

Author(s):

Diehm ◽

Baumgartner ◽

Silvestro ◽

Herrmann ◽

Triller ◽

...

Keyword(s):

Ct Angiography ◽

Iliac Artery ◽

Automatic Measurement ◽

Random Order ◽

Aortic Aneurysms ◽

Intraobserver Variability ◽

Automatic Method ◽

Left Common Iliac Artery ◽

Abdominal Aortic ◽

Intraobserver Variation

Background: Open surgical or endovascular abdominal aortic aneurysm (AAA) relies on precise preprocedual imaging. Purpose of this study was to assess inter- and intraobserver variation of software-supported automated and manual multi row detector CT angiography (MDCTA) in aortoiliac diameter measurements before AAA repair. Patients and methods: Thirty original MDCTA data sets (4 times 2mm collimation) of patients scheduled for endovascular AAA repair were studied on a dedicated software capable of creating two-dimensional reformatted planes orthogonal to the aortoiliac center-line. Measurements were performed twice with a four-week interval between readings. Data were analysed by two blinded readers at random order. Two different measurement methods were performed: reader-assisted freehand wall-to-wall measurement and semi-automatic measurement. Results: Aortoiliac diameters were significantly underestimated by the semi-automatic method as compared to reader-assisted measurements (p < 0.0031). Intraobserver variability of AAA diameter calculation was not significant (p > 0.15) for reader-assisted measurements except for the diameter of the left common iliac artery in reader 2 (p = 0.0045) and it was not significant (p > 0.14) using the semi-automatic method. Interobserver variability was not significant for AAA diameter measurements using the reader-assisted method and for proximal neck analysis with the semi-automatic method (p > 0.27). Relevant interobserver variation was observed for semi-automatic measurement of maximum AAA (p = 0.0007) and iliac artery diameters (p = 0.024). Conclusions: Dedicated MDCTA software provides a useful tool to minimize aortoiliac diameter measurement variation and to improve imaging precision before AAA repair. For reliable AAA diameter analysis the reader-assisted freehand measurement method is recommended to be applied to a set of reformatted CT data as provided by the software used in this study.

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Automatic Measurement with Small Vibration Sensor Using Self-Coupling Effect

IEEJ Transactions on Electronics Information and Systems ◽

10.1541/ieejeiss.129.2115 ◽

2009 ◽

Vol 129 (12) ◽

pp. 2115-2120 ◽

Cited By ~ 2

Author(s):

Yasuhiko Nawa ◽

Norio Tsuda ◽

Jun Yamada

Keyword(s):

Coupling Effect ◽

Automatic Measurement ◽

Vibration Sensor ◽

Small Vibration

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Automation of selected brazes' dynamic properties in high-temperatures' measurement process

Image Processing & Communications ◽

10.2478/v10248-012-0077-0 ◽

2013 ◽

Vol 18 (2-3) ◽

pp. 33-41

Author(s):

Dominik Sankowski ◽

Marcin Bakala ◽

Rafał Wojciechowski

Keyword(s):

Surface Tension ◽

High Temperatures ◽

Dynamic Properties ◽

Automatic Measurement ◽

Measurement Methodology ◽

Joining Process ◽

Wetting Force ◽

Research Grant

Abstract The good quality of several manufactured components frequently depends on solidliquid interactions existing during processing. Nowadays, the research in material engineering focuses also on modern, automatic measurement methods of joining process properties, i.a. wetting force and surface tension, which allows for quantitative determination of above mentioned parameters. In the paper, the brazes’ dynamic properties in high-temperatures’ measurement methodology and the stand for automatic determination of braze’s properties, constructed and implmented within the research grant nr KBN N N519 441 839 - An integrated platform for automatic measurement of wettability and surface tension of solders at high temperatures, are widely described

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Improvement Of Free Convection From Three horizontal Finned Cylinders Fixed Between Two Walls

Wasit Journal of Engineering Sciences ◽

10.31185/ejuow.vol6.iss2.97 ◽

2018 ◽

Vol 6 (2) ◽

pp. 98-114 ◽

Cited By ~ 1

Author(s):

Hassan K. Abdullah ◽

Haneen H. Rahman

Keyword(s):

Heat Transfer ◽

Free Convection ◽

Prandtl Number ◽

Convection Heat Transfer ◽

Constant Heat Flux ◽

Heat Fluxes ◽

Head Orientation ◽

Outer Diameter ◽

Gravitational Acceleration ◽

Convection Heat

Improvement of free convection heat transfer from three finned cylinders arranged at a triangle shape fixed between two walls has been investigated in this study. Three mild steel finned cylinders fixed between two walls from Pyrex glass have been used as a test rig. It has been changed the spacing between the cylinders (X/D=1,2,3 & S/D=2,4,6) and the head orientation of a triangle to the top under constant heat flux values (38, 254, 660, 1268) W/m2 and compare with case of three finned cylinders arranged in vertical array in line fixed between two wall. The experiments are carried for Rayleigh number (Ra) from (15x103 to 14 x104 ) and Prandtl number from (0.706-0.714 ). The results indicated an increase in Nu with increasing Ra for all cylinders. Furthermore,hx and Nu increased proportionally with the increasing of cylinder spacings for all heat fluxes. Also the experimental results show the case of triangle arrangement is improvement the heat transfer more than case of vertical arrangement. Heat transfer dimensionless correlating equation is also proposed. Nomeclature: Ax: surface area(m2), T∞: surrounding temperature(k), D: the outer diameter of fin (m), Kf: the thermal conductivity for air at film temperature(W/m.k), hx: Local convection heat transfer(W/m2.k), Gravitational acceleration(m/s2), I: Electric current (Amp), Nu: Nusselt number, Pr: Prandtl number

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Study of effect of deforming element acting surfaces angle on characteristics of power dynamics of combined hole mandrelling method

10.36652/1813-1336-2020-16-5-212-216 ◽

2020 ◽

pp. 212-216

Author(s):

A.V. Shchedrin ◽

V.F. Aleshin ◽

I.Yu. Ignatkin ◽

N.Yu. Chikhacheva

Keyword(s):

Power Dynamics ◽

Outer Diameter ◽

Force Dynamics ◽

Steel 12Khn3a

The effect of the deforming element acting surfaces angle on the characteristics of the force dynamics of the combined deforming cutting mandrelling method of holes in the workpieces of various height and outer diameter from steel 12KhN3A is studied.

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