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Title: From Steganographic Payload Location to Message Extraction.

Abstract

Abstract not provided.

Authors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1116417
Report Number(s):
SAND2013-9286J
480467
DOE Contract Number:
AC04-94AL85000
Resource Type:
Journal Article
Resource Relation:
Journal Name: Information Forensics and Security; Related Information: Proposed for publication in Information Forensics and Security.
Country of Publication:
United States
Language:
English

Citation Formats

Quach, Tu-Thach, and Anderson, Hyrum. From Steganographic Payload Location to Message Extraction.. United States: N. p., 2013. Web.
Quach, Tu-Thach, & Anderson, Hyrum. From Steganographic Payload Location to Message Extraction.. United States.
Quach, Tu-Thach, and Anderson, Hyrum. Tue . "From Steganographic Payload Location to Message Extraction.". United States. doi:.
@article{osti_1116417,
title = {From Steganographic Payload Location to Message Extraction.},
author = {Quach, Tu-Thach and Anderson, Hyrum},
abstractNote = {Abstract not provided.},
doi = {},
journal = {Information Forensics and Security},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 2013},
month = {Tue Oct 01 00:00:00 EDT 2013}
}
  • The {sup 17}F( p,thinsp{gamma}){sup 18}Ne reaction is important in stellar explosions, but its rate has been uncertain because of an expected 3{sup +} state in {sup 18}Ne that has never been conclusively observed. This state would provide a strong {ell}=0 resonance and, depending on its excitation energy, could dominate the stellar reaction rate. We have observed this missing 3{sup +} state by measuring the {sup 1}H( {sup 17}F,thinspp) {sup 17}F excitation function with a radioactive {sup 17}F beam at the ORNL Holifield Radioactive Ion Beam Facility. We find that the state lies at a center-of-mass energy of E{sub r}=599.8{plus_minus}1 .5{submore » stat}{plus_minus}2.0{sub sys} keV (E{sub x}=4523.7{plus_minus} 2.9 keV) and has a width of {Gamma}=18{plus_minus}2{sub stat}{plus_minus}1{sub sys} keV . {copyright} {ital 1999} {ital The American Physical Society}« less
  • The [sup 17]F( p,thinsp[gamma])[sup 18]Ne reaction is important in stellar explosions, but its rate has been uncertain because of an expected 3[sup +] state in [sup 18]Ne that has never been conclusively observed. This state would provide a strong [ell]=0 resonance and, depending on its excitation energy, could dominate the stellar reaction rate. We have observed this missing 3[sup +] state by measuring the [sup 1]H( [sup 17]F,thinspp) [sup 17]F excitation function with a radioactive [sup 17]F beam at the ORNL Holifield Radioactive Ion Beam Facility. We find that the state lies at a center-of-mass energy of E[sub r]=599.8[plus minus]1more » .5[sub stat][plus minus]2.0[sub sys] keV (E[sub x]=4523.7[plus minus] 2.9 keV) and has a width of [Gamma]=18[plus minus]2[sub stat][plus minus]1[sub sys] keV . [copyright] [ital 1999] [ital The American Physical Society]« less
  • In Zymomonas mobilis, three- to fourfold more glyceraldehyde-3-phosphate dehydrogenase protein than phosphoglycerate kinase is needed for glycolysis because of differences in catalytic efficiency. Consistent with this requirement, higher levels of glyceraldehyde-3-phosphate dehydrogenase were observed with two-dimensional polyacrylamide gel electrophoresis. The genes encoding these enzymes (gap and pgk, respectively) form a bicistronic operon, and some form of regulation is required to provide this differential expression. Two transcripts were observed in Northern RNA analyses with segments of gap as a probe: a more abundant 1.2-kb transcript that contained gap alone and a 2.7-kb transcript that contained both genes. Based on the relativemore » amounts of these transcripts, the coding regions for glyceraldehyde-3-phosphate dehydrogenase were calculated to be fivefold more abundant than those for phosphoglycerate kinase. Assuming equal translational efficiency, this is sufficient to provide the observed differences in expression. Operon fusions with lacZ provided no evidence for intercistronic terminators or attenuation mechanisms. Both gap operon messages were very stable, with half-lives of approximately 16 min (1.2-kb transcript) and 7 min (2.7-kb transcript). Transcript mapping and turnover studies indicated that the shorter gap message was a stable degradation product of the full-length message. Thus differential expression of gap and pgk results primarily from increased translation of the more stable 5' segment of the transcript containing gap. The slow turnover of the messages encoding glyceraldehyde-3-phosphate dehydrogenase and phosphoglycerate kinase is proposed as a major feature contributing to the high level of expression of these essential enzymes.« less
  • No abstract prepared.