The shape of a superfluid vortex nucleated at a sharp edge

1984 ◽  
Vol 54 (1-2) ◽  
pp. 155-158 ◽  
Author(s):  
Yorke J. Brown
Keyword(s):  
Sharp Edge

Edge Penetration Effects in the Low-Loss Electron Image in the SEM

1988 ◽  
Vol 46 ◽  
pp. 202-203
Author(s):  
Oliver C. Wells
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Beam Energy ◽  
Secondary Electron ◽  
Sharp Edge ◽  
Beam Diameter ◽  
Low Loss ◽  
Additional Information ◽  
Electron Image ◽  
Scanning Electron

The low-loss electron (LLE) image in the scanning electron microscope (SEM) is useful for the study of uncoated photoresist and some other poorly conducting specimens because it is less sensitive to specimen charging than is the secondary electron (SE) image. A second advantage can arise from a significant reduction in the width of the “penetration fringe” close to a sharp edge. Although both of these problems can also be solved by operating with a beam energy of about 1 keV, the LLE image has the advantage that it permits the use of a higher beam energy and therefore (for a given SEM) a smaller beam diameter. It is an additional attraction of the LLE image that it can be obtained simultaneously with the SE image, and this gives additional information in many cases. This paper shows the reduction in penetration effects given by the use of the LLE image.

UGINOX MA3

Alloy Digest ◽  
2008 ◽  
Vol 57 (7) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Sharp Edge ◽  
Aisi 420

Abstract Uginox MA3 (X30Cr13, No. 1.4028; AISI 420) is an age-hardenable martensitic stainless steel, mostly used where a sharp edge for cutting is needed. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1015. Producer or source: Arcelor Stainless Processing LLC.

UGINOX MA2

Alloy Digest ◽  
2008 ◽  
Vol 57 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Martensitic Stainless Steel ◽  
Heat Treating ◽  
Sharp Edge ◽  
Aisi Type

Abstract Uginox MA2 (X20Cr13, No. 1.4021; AISI type 420) is an age-hardenable martensitic stainless steel, mostly used where a sharp edge for cutting is needed. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1012. Producer or source: Arcelor Stainless Processing LLC.

scholarly journals Heat Transfer and Flow on the Blade Tip of a Gas Turbine Equipped With a Mean-Camberline Strip

2001 ◽  
Vol 123 (4) ◽  
pp. 704-708 ◽  
Author(s):  
A. A. Ameri
Keyword(s):  
Heat Transfer ◽  
Sharp Edge ◽  
Tip Leakage Flow ◽  
Transfer Coefficients ◽  
Large Power ◽  
Tip Leakage ◽  
Numerical Heat Transfer ◽  
Heat Transfer Coefficients ◽  
Blade Tip ◽  
Convective Heat Transfer Coefficients

Experimental and computational studies have been performed to investigate the detailed distribution of convective heat transfer coefficients on the first-stage blade tip surface for a geometry typical of large power generation turbines (>100 MW). In a previous work the numerical heat transfer results for a sharp edge blade tip and a radiused blade tip were presented. More recently several other tip treatments have been considered for which the tip heat transfer has been measured and documented. This paper is concerned with the numerical prediction of the tip surface heat transfer for radiused blade tip equipped with mean-camberline strip (or “squealer” as it is often called). The heat transfer results are compared with the experimental results and discussed. The effectiveness of the mean-camberline strip in reducing the tip leakage and the tip heat transfer as compared to a radiused edge tip and sharp edge tip was studied. The calculations show that the sharp edge tip works best (among the cases considered) in reducing the tip leakage flow and the tip heat transfer.

Sharp Edge Flight Experiment-II Instrumentation Challenges and Selected Flight Data

2014 ◽  
Vol 51 (1) ◽  
pp. 175-186 ◽  
Author(s):  
Ali Gülhan ◽  
Frank Siebe ◽  
Thomas Thiele ◽  
Dominik Neeb ◽  
John Turner ◽  
...  
Keyword(s):  
Sharp Edge ◽  
Flight Experiment ◽  
Flight Data

Vitamin E and CNS Hemorrhage

PEDIATRICS ◽  
1984 ◽  
Vol 74 (6) ◽  
pp. 1113-1114
Author(s):  
DALE L. PHELPS
Keyword(s):  
United States ◽  
Vitamin E ◽  
Premature Infant ◽  
Premature Infants ◽  
The United States ◽  
The Other ◽  
Sharp Edge ◽  
Critical Examination ◽  
Extreme Caution

Preventing handicaps in premature infants is a pressing goal, and vitamin E has been offering some hope for the prevention of one of the most emotionally distressing sequelae, blindness. The report of Speer et al1 confirms the observation of Chiswick et al2 that vitamin E may also reduce severe CNS hemorrhage, one of the other major handicapping conditions faced by the premature infant. Naturally, we welcome this information, but in our eagerness to find a cure, we must not blunt the sharp edge of critical examination of the data. Extreme caution must be still be exercised for the following reasons: (1) some questions have been raised about the data to be examined; (2) a third study suggests the opposite result3; and (3) there are significant differences in the vitamin E formulations that were used and those available for use in the United States.

Electric field at sharp edge as a criterion for dimensioning condenser-type insulation systems

2017 ◽  
Vol 152 ◽  
pp. 485-492 ◽  
Author(s):  
Dalibor Filipović-Grčić ◽  
Božidar Filipović-Grčić ◽  
Miroslav Poljak
Keyword(s):  
Electric Field ◽  
Sharp Edge ◽  
Insulation Systems
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