Creep behavior of low-density uranium carbide-base alloys

1975 ◽  
Vol 55 (3) ◽  
pp. 327-334 ◽  
Author(s):  
M.S. Seltzer ◽  
T.R. Wright ◽  
E.O. Speidel
Keyword(s):  
Creep Behavior ◽  
Low Density ◽  
Uranium Carbide

ChemInform Abstract: CREEP BEHAVIOR OF URANIUM CARBIDE-BASED ALLOYS

1975 ◽  
Vol 6 (24) ◽  
pp. no-no
Author(s):  
M. S. SELTZER ◽  
T. R. WRIGHT ◽  
D. P. MOAK
Keyword(s):  
Creep Behavior ◽  
Uranium Carbide

scholarly journals Creep and Recovery Behavior of Compression Molded Low Density Polyethylene/Cellulose Composites

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Martin M. Riara ◽  
Abdallah S. Merenga ◽  
Charles M. Migwi
Keyword(s):  
Polymer Composites ◽  
Creep Behavior ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Time Behavior ◽  
Creep Tests ◽  
Cellulose Composites ◽  
Long Time ◽  
Wlf Model ◽  
Temperature Time

Low density polyethylene (LDPE) is an important industrial material because it is durable, light-weight, easily processed and characteristically inert, but its everyday use is hazardous to the environment. The solution to this seems to consist of incorporation of biopolymers in the structure of LDPE to form composites. Compression molded composites at different cellulose loading were subjected to creep tests at 30, 40, 50, and 60°C. The samples were displaced for 12 minutes and allowed to recover for 12 minutes. Creep behavior of the polymer composites was governed by temperature, time, and cellulose loading. Creep performance decreased with increase in temperature and improved with cellulose loading while creep modulus decreased with increase in time and temperature. Time temperature superposition was used to predict the long time (up to 106 s) creep behavior of the samples. William-Landel-Ferry (WLF) model offered a better description of the shift factors based on the short term data that was used to predict the long time behavior of the polymer composites by shifting the curves along the logarithmic time axis. The deformation was dependent on free volume.

Effect of processing and density on morphology and creep behavior of linear low-density polyethylene

2011 ◽  
Vol 51 (8) ◽  
pp. 1642-1649 ◽  
Author(s):  
Yakov B. Unigovski ◽  
Arthur L. Bobovitch ◽  
Emmanuel M. Gutman ◽  
Dmitry Mogilansky
Keyword(s):  
Creep Behavior ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene

Creep behavior of 6 micrometer linear low density polyethelene film

1993 ◽  
Vol 13 (2) ◽  
pp. 37-40
Author(s):  
J.M. Simpson ◽  
W.W. Schur
Keyword(s):  
Creep Behavior ◽  
Low Density

Creep Behavior of Uranium Carbide-Based Alloys

1975 ◽  
Vol 58 (3-4) ◽  
pp. 138-142 ◽  
Author(s):  
M. S. SELTZER ◽  
T. R. WRIGHT ◽  
D. P. MOAK
Keyword(s):  
Creep Behavior ◽  
Uranium Carbide

Application of Improved Voltage Compensation in the SEM to Imaging of Organic Materials

1973 ◽  
Vol 31 ◽  
pp. 444-445
Author(s):  
P.J. Killingworth ◽  
M. Warren
Keyword(s):  
Electron Beam ◽  
Organic Materials ◽  
Operating Parameters ◽  
Low Density ◽  
Beam Diameter ◽  
Incident Electron Beam ◽  
Specimen Material ◽  
Voltage Compensation ◽  
Selection Of ◽  
Scanning Electron

Ultimate resolution in the scanning electron microscope is determined not only by the diameter of the incident electron beam, but by interaction of that beam with the specimen material. Generally, while minimum beam diameter diminishes with increasing voltage, due to the reduced effect of aberration component and magnetic interference, the excited volume within the sample increases with electron energy. Thus, for any given material and imaging signal, there is an optimum volt age to achieve best resolution.In the case of organic materials, which are in general of low density and electric ally non-conducting; and may in addition be susceptible to radiation and heat damage, the selection of correct operating parameters is extremely critical and is achiev ed by interative adjustment.

Quantitative defect studies in semiconductor TEM samples prepared by low angle ion milling

1995 ◽  
Vol 53 ◽  
pp. 512-513
Author(s):  
L. Mulestagno ◽  
J.C. Holzer ◽  
P. Fraundorf
Keyword(s):  
Sample Preparation ◽  
Milling Time ◽  
High Density ◽  
Low Density ◽  
Ion Milling ◽  
High Quality ◽  
Variable Angle ◽  
Major Disadvantage ◽  
Induced Defects

Due to the wealth of information, both analytical and structural that can be obtained from it TEM always has been a favorite tool for the analysis of process-induced defects in semiconductor wafers. The only major disadvantage has always been, that the volume under study in the TEM is relatively small, making it difficult to locate low density defects, and sample preparation is a somewhat lengthy procedure. This problem has been somewhat alleviated by the availability of efficient low angle milling.Using a PIPS® variable angle ion -mill, manufactured by Gatan, we have been consistently obtaining planar specimens with a high quality thin area in excess of 5 × 104 μm2 in about half an hour (milling time), which has made it possible to locate defects at lower densities, or, for defects of relatively high density, obtain information which is statistically more significant (table 1).

Intralysosomal Accumulation of Colloidal Gold-Low Density Lipoprotein Conjugates in Chloroquine-Treated Fibroblasts

1985 ◽  
Vol 43 ◽  
pp. 546-547 ◽  
Author(s):  
Dean A. Handley ◽  
Cynthia M. Arbeeny ◽  
Larry D. Witte
Keyword(s):  
Colloidal Gold ◽  
Cultured Cells ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Coated Vesicle ◽  
Low Density ◽  
Cholesterol Esters ◽  
Cultured Fibroblasts ◽  
Surface Receptors ◽  
Ldl Particles

Low density lipoproteins (LDL) are the major cholesterol carrying particles in the blood. Using cultured cells, it has been shown that LDL particles interact with specific surface receptors and are internalized via a coated pit-coated vesicle pathway for lysosomal catabolism. This (Pathway has been visualized using LDL labeled to ferritin or colloidal gold. It is now recognized that certain lysomotropic agents, such as chloroquine, inhibit lysosomal enzymes that degrade protein and cholesterol esters. By interrupting cholesterol ester hydrolysis, chloroquine treatment results in lysosomal accumulation of cholesterol esters from internalized LDL. Using LDL conjugated to colloidal gold, we have examined the ultrastructural effects of chloroquine on lipoprotein uptake by normal cultured fibroblasts.

Sign in / Sign up

Export Citation Format

Share Document