548 research outputs found
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Nuclear Reaction Data from Surrogate Measurements: A Consideration of (n,f) Cross Sections
A brief summary of the Surrogate reaction method, an indirect approach for determining compound-nuclear reaction cross sections, is presented. The possibilities for obtaining accurate (n,f) cross sections from Surrogate measurements that are analyzed in the Weisskopf-Ewing and Ratio approximations are considered. Theoretical studies and benchmark experiments that provide new insights into the validity and limitations of the Surrogate approach, are discussed
Absolute and Relative Surrogate Measurements of the \u3csup\u3e236\u3c/sup\u3eU(\u3cem\u3en,f\u3c/em\u3e) Cross Section as a Probe of Angular Momentum Effects
Using both the absolute and relative surrogate techniques, the 236U(n,f) cross section was deduced over an equivalent neutron energy range of 0 to 20 MeV. A 42 MeV 3He beam from the 88 Inch Cyclotron at Lawrence Berkeley National Laboratory was used to perform a (3He,α) pickup reaction on targets of 235U (Jπ=7/2−) and 238U (Jπ = 0+) and the fission decay probabilities were determined. The 235U(3He,αf) and 238U(3He,αf) were surrogates for 233U(n,f) and 236U(n,f), respectively. The cross sections extracted using the surrogate method were compared to directly measured cross sections. The sensitivity of these cross sections to the Jπ -population distributions was explored
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The Surrogate Method: Past, Present and Future
The STARS/LiBerACE collaboration has been exploring the surrogate technique with success in the actinide region. This method uses a direct reaction to measure the decay probability of the same compound nucleus produced via a neutron-induced channel. This paper serves as an overview of these activities. Using the STARS array at 88-inch Cyclotron at Lawrence Berkeley National Laboratory we have explored the following surrogate reactions: {sup 234}U({alpha}, {alpha}{prime}f), {sup 235}U({sup 3}He, {alpha}f), {sup 236}U({alpha}, {alpha}{prime}f), {sup 238}U ({alpha},{alpha}{prime}f), {sup 238}U({sup 3}He,{alpha}f), {sup 238}U({sup 3}He, tf) surrogates for {sup 233}U(n,f), {sup 233}U(n,f), {sup 235}U(n,f), {sup 237}U(n,f), {sup 236}U(n,f), and {sup 237}Np(n,f), respectively
1958: Abilene Christian College Bible Lectures - Full Text
“GOD”
Being the
Abilene Christian College Annual
Bible Lectures
1958
Price: $3.00
Published by
FIRM FOUNDATION PUBLISHING HOUSE
Box 77 Austin, Texa
Wind Energy Assessment Study for Nevada -- Tall Tower Deployment (Stone Cabin)
The objective of this work effort was to characterize wind shear and turbulence for representative wind-developable areas in Nevada
The Vehicle, Fall 1983
Vol. 25, No. 1
Table of Contents
Amish BoyDevon Flesorpage 3
SyllogismJ. Maura Davispage 3
Ten SecondsD.L. Lewispage 4
The Cedar ChestBridget M. Howepage 4
A Christmas With CarolSteve Longpage 5
TeethMichelle Mitchellpage 7
An I-Love-You PoemD.L. Lewispage 8
The Dragon SlayerSusan Gradypage 8
A DefinitionAmy J. Eadespage 9
FingernailsSuzanne Hornpage 10
The Liar\u27s TableBrook Wilsonpage 10
Fifi\u27s Last PartySteve Longpage 12
Absence/PresenceSuzanne Hornpage 13
From the Rantings of a Mad Astronomy StudentAmy J. Eadespage 13
In the Name of the Father, the Son, and MachiavelliF. Link Rapierpage 15
Errant LoverBecky Lawsonpage 16
DaddyKevin Lylespage 16
GhostsGary Ervinpage 17
TangoF. Link Rapierpage 17
Grandma\u27s SlippersBecky Lawsonpage 18
EdgesAmy J. Eadespage 19
Having ChildrenDevon Flesorpage 20
Young Black GirlKevin Lylespage 21
CatSuzanne Hornpage 22
Breakfast for OneMichelle Mitchellpage 22
A Modest ProposalBrooke Sanfordpage 23
Post MortemF. Link Rapierpage 26
Who Said I Forgot?Lynne Krausepage 27
The Corner Booth at StuckeysMaggie Kennedypage 28
The First DayDavis Brydenpage 29
DownLynne Krausepage 30
Fairie RingDevon Flesorpage 31
The LaundrymatKathy Fordpage 32
Sunday in OctoberBridget M. Howepage 32
The Kitchen WindowMaggie Kennedypage 33
UntitledChristina Maire Vitekpage 34
8th Grade Field Trip to SpringfieldMichelle Mitchellpage 34
Children of the FortiesF. Link Rapierpage 35
one winter and i was eightGary Ervinpage 35
Don\u27t we all know?Thomas B. Waltrippage 36
The TravelerMaggie Kennedypage 36
The VisitKathy Fordpage 40
CubismMaggie Kennedypage 40https://thekeep.eiu.edu/vehicle/1042/thumbnail.jp
The Vehicle, Fall 1983
Vol. 25, No. 1
Table of Contents
Amish BoyDevon Flesorpage 3
SyllogismJ. Maura Davispage 3
Ten SecondsD.L. Lewispage 4
The Cedar ChestBridget M. Howepage 4
A Christmas With CarolSteve Longpage 5
TeethMichelle Mitchellpage 7
An I-Love-You PoemD.L. Lewispage 8
The Dragon SlayerSusan Gradypage 8
A DefinitionAmy J. Eadespage 9
FingernailsSuzanne Hornpage 10
The Liar\u27s TableBrook Wilsonpage 10
Fifi\u27s Last PartySteve Longpage 12
Absence/PresenceSuzanne Hornpage 13
From the Rantings of a Mad Astronomy StudentAmy J. Eadespage 13
In the Name of the Father, the Son, and MachiavelliF. Link Rapierpage 15
Errant LoverBecky Lawsonpage 16
DaddyKevin Lylespage 16
GhostsGary Ervinpage 17
TangoF. Link Rapierpage 17
Grandma\u27s SlippersBecky Lawsonpage 18
EdgesAmy J. Eadespage 19
Having ChildrenDevon Flesorpage 20
Young Black GirlKevin Lylespage 21
CatSuzanne Hornpage 22
Breakfast for OneMichelle Mitchellpage 22
A Modest ProposalBrooke Sanfordpage 23
Post MortemF. Link Rapierpage 26
Who Said I Forgot?Lynne Krausepage 27
The Corner Booth at StuckeysMaggie Kennedypage 28
The First DayDavis Brydenpage 29
DownLynne Krausepage 30
Fairie RingDevon Flesorpage 31
The LaundrymatKathy Fordpage 32
Sunday in OctoberBridget M. Howepage 32
The Kitchen WindowMaggie Kennedypage 33
UntitledChristina Maire Vitekpage 34
8th Grade Field Trip to SpringfieldMichelle Mitchellpage 34
Children of the FortiesF. Link Rapierpage 35
one winter and i was eightGary Ervinpage 35
Don\u27t we all know?Thomas B. Waltrippage 36
The TravelerMaggie Kennedypage 36
The VisitKathy Fordpage 40
CubismMaggie Kennedypage 40https://thekeep.eiu.edu/vehicle/1042/thumbnail.jp
Allelic imbalances of chromosomes 8p and 18q and their roles in distant relapse of early stage, node-negative breast cancer
INTRODUCTION: Identification of breast cancer patients at risk for postoperative distant relapse is an important clinical issue. Existing pathological markers can predict disease recurrence only to a certain extent, and there is a need for more accurate predictors. METHODS: Using 'counting alleles', a novel experimental method, we determined allelic status of chromosomes 8p and 18q in a case-control study with 65 early stage, node negative, invasive ductal carcinomas (IDCs). The association between allelic imbalance (AI) of both chromosomal markers and distant relapses was examined. RESULTS: Eighty percent of tumors contained 8pAI and sixty-eight percent of tumors contained 18qAI. However, none of the tumor samples retained both chromosome 8p and 18q alleles. More importantly, tumors with 8pAI but not 18qAI were more likely to have distant relapse compared to tumors with 18qAI but not 8pAI. CONCLUSION: Our finding suggests that differential allelic loss of chromosomes 8p and 18q may represent subtypes of early stage IDC with different tumor progression behaviors
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