scholarly journals ANALOG MODEL OF WAVE PROPAGATION IN OPEN AND CLOSED END CYLINDER PHASE II OF AN INVESTIGATION OF ''ANALOG STUDY OF IMPACT FRACTURE OF CLOSED-END CYLINDERS.''

1967 ◽  
Author(s):  
F.D. Ju ◽  
J.C. Wambold
Keyword(s):  
Wave Propagation ◽  
Phase Ii ◽  
Impact Fracture ◽  
Analog Model ◽  
Analog Study

A CALIBRATED MODEL SEISMIC SYSTEM

Geophysics ◽  
1972 ◽  
Vol 37 (3) ◽  
pp. 445-455 ◽  
Author(s):  
C. N. G. Dampney ◽  
B. B. Mohanty ◽  
G. F. West
Keyword(s):  
Wave Propagation ◽  
Elastic Wave ◽  
Elastic Waves ◽  
Critical Examination ◽  
Two Dimensional ◽  
Linear Filtering ◽  
Analog Model ◽  
Basic Assumptions ◽  
Electronic Circuitry ◽  
Seismic System

Simple electronic circuitry and axially polarized ceramic transducers are employed to generate and detect elastic waves in a two‐dimensional analog model. The absence of reverberation and the basic simplicity. of construction underlie the advantages of this system. If the form of the fundamental wavelet in the model itself, as modified by the linear filtering effects of the remainder of the system, can be found, then calibration is achieved. This permits direct comparison of theoretical and experimental seismograms for a given model if its impulse response is known. A technique is developed for calibration and verified by comparing Lamb’s theoretical and experimental seismograms for elastic wave propagation over the edge of a half plate. This comparison also allows a critical examination of the basic assumptions inherent in a model seismic system.

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

Phase II study of safety, efficacy and pharmacokinetics of BXT-51072 in patients with mild-moderately active ulcerative colitis

2001 ◽  
Vol 120 (5) ◽  
pp. A280-A280
Author(s):  
S HANAUER ◽  
P MINER ◽  
A KESHAVARZIAN ◽  
E MORRIS ◽  
B SALZBERG ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Phase Ii ◽  
Phase Ii Study ◽  
Active Ulcerative Colitis

1326: Phase II Trial of Gemcitabine, Paclitaxel, and Cisplatin in Advanced Transitional Cell Carcinoma

2005 ◽  
Vol 173 (4S) ◽  
pp. 360-360
Author(s):  
Peter E. Clark ◽  
Diana Stindt ◽  
M. Craig Hall ◽  
Michele Harmon ◽  
James F. Lovato ◽  
...  
Keyword(s):  
Transitional Cell Carcinoma ◽  
Cell Carcinoma ◽  
Phase Ii ◽  
Phase Ii Trial ◽  
Transitional Cell

CNTO 1275 for Psoriasis Holds Steady in Phase II

2006 ◽  
Vol 37 (7) ◽  
pp. 28
Author(s):  
SHERRY BOSCHERT
Keyword(s):  
Phase Ii
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