Observations of the Electric Furnace Spectra of Cobalt, Nickel, Barium, Strontium, and Calcium in the Region of Greater Wave-Length

1920 ◽  
Vol 51 ◽  
pp. 179 ◽  
Author(s):  
Arthur S. King
Keyword(s):  
Electric Furnace ◽  
Wave Length ◽  
Cobalt Nickel ◽  
Barium Strontium

scholarly journals INVESTIGATION AND DEVELOPMENT OF WELDING FLUXES WITH THE USE OF LADLE ELECTRIC-FURNACE SLAG AND BARIUM-STRONTIUM MODIFIER FOR ROLLS SURFACING

2018 ◽  
Vol 61 (4) ◽  
pp. 274-279 ◽  
Author(s):  
N. A. Kozyrev ◽  
R. E. Kryukov ◽  
A. A. Umanskii ◽  
A. R. Mikhno ◽  
L. V. Dumova
Keyword(s):  
Electric Furnace ◽  
Barium Strontium ◽  
Welding Fluxes ◽  
Furnace Slag

Probe size and 5th-order aberration

1987 ◽  
Vol 45 ◽  
pp. 134-135 ◽  
Author(s):  
Zhifeng Shao
Keyword(s):  
Electron Probe ◽  
Spherical Aberration ◽  
Wave Length ◽  
Cylindrical Symmetry ◽  
Electron Wave ◽  
Third Order ◽  
The Third ◽  
Probe Radius ◽  
Small Probe ◽  
Probe Size

A small electron probe has many applications in many fields and in the case of the STEM, the probe size essentially determines the ultimate resolution. However, there are many difficulties in obtaining a very small probe.Spherical aberration is one of them and all existing probe forming systems have non-zero spherical aberration. The ultimate probe radius is given byδ = 0.43Csl/4ƛ3/4where ƛ is the electron wave length and it is apparent that δ decreases only slowly with decreasing Cs. Scherzer pointed out that the third order aberration coefficient always has the same sign regardless of the field distribution, provided only that the fields have cylindrical symmetry, are independent of time and no space charge is present. To overcome this problem, he proposed a corrector consisting of octupoles and quadrupoles.

New Feasible Concepts of Aberration Correction for Realizing High-Resolution Electron Microscopes

1990 ◽  
Vol 48 (1) ◽  
pp. 202-203
Author(s):  
H. Rose
Keyword(s):  
Spherical Aberration ◽  
Wave Length ◽  
Electron Wave ◽  
Optical Lens ◽  
Resolution Electron ◽  
Rotationally Symmetric ◽  
Electron Microscopes ◽  
The Cost ◽  
Imaging Performance ◽  
Acceleration Voltage

The imaging performance of the light optical lens systems has reached such a degree of perfection that nowadays numerical apertures of about 1 can be utilized. Compared to this state of development the objective lenses of electron microscopes are rather poor allowing at most usable apertures somewhat smaller than 10-2 . This severe shortcoming is due to the unavoidable axial chromatic and spherical aberration of rotationally symmetric electron lenses employed so far in all electron microscopes.The resolution of such electron microscopes can only be improved by increasing the accelerating voltage which shortens the electron wave length. Unfortunately, this procedure is rather ineffective because the achievable gain in resolution is only proportional to λ1/4 for a fixed magnetic field strength determined by the magnetic saturation of the pole pieces. Moreover, increasing the acceleration voltage results in deleterious knock-on processes and in extreme difficulties to stabilize the high voltage. Last not least the cost increase exponentially with voltage.

A New Electric Furnace

1893 ◽  
Vol 35 (896supp) ◽  
pp. 14322-14323
Author(s):  
Henri Moissan
Keyword(s):  
Electric Furnace

The Electric Furnace

1910 ◽  
Vol 69 (1788supp) ◽  
pp. 226-227
Author(s):  
P. M. N. Bennie
Keyword(s):  
Electric Furnace

Behaviour of copper during the high temperature oxidation of steels produced by the electric furnace route

2003 ◽  
Vol 100 (1) ◽  
pp. 73-82
Author(s):  
Y. Riquier ◽  
D. Lassance ◽  
I. Li ◽  
J. M. Detry ◽  
A. Hildenbrand
Keyword(s):  
High Temperature ◽  
Electric Furnace ◽  
High Temperature Oxidation ◽  
Temperature Oxidation

Buckling Behavior of Tire Breaker Structure

1983 ◽  
Vol 11 (1) ◽  
pp. 3-19
Author(s):  
T. Akasaka ◽  
S. Yamazaki ◽  
K. Asano
Keyword(s):  
Elastic Foundation ◽  
Elastic Moduli ◽  
Wave Length ◽  
Bending Moment ◽  
Experimental Results ◽  
Automobile Tire ◽  
Buckling Behavior ◽  
Post Buckling ◽  
Steel Cord ◽  
Interlaminar Shear

Abstract The buckled wave length and the critical in-plane bending moment of laminated long composite strips of cord-reinforced rubber sheets on an elastic foundation is analyzed by Galerkin's method, with consideration of interlaminar shear deformation. An approximate formula for the wave length is given in terms of cord angle, elastic moduli of the constituent rubber and steel cord, and several structural dimensions. The calculated wave length for a 165SR13 automobile tire with steel breakers (belts) was very close to experimental results. An additional study was then conducted on the post-buckling behavior of a laminated biased composite beam on an elastic foundation. This beam is subjected to axial compression. The calculated relationship between the buckled wave rise and the compressive membrane force also agreed well with experimental results.

Efficacy of laser coagulation with a wave length of 0.57 microns in tumours of the iris and iridociliary zone (preliminary studies)

2014 ◽  
Vol 47 (1) ◽  
pp. 48-51
Author(s):  
P. Chechin ◽  
◽  
I. Safronenkova ◽  
O. Guzun ◽  
V. Repyah ◽  
...  
Keyword(s):  
Wave Length ◽  
Laser Coagulation
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