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Measurement of the K{sup 0}{sub S} - K{sup 0}{sub L} mass difference by the time dependence of strangeness

Description: The magnitude of the K{sup 0}{sub S} - K{sup 0}{sub L} mass difference has been measured by monitoring the time dependence of the strangeness of neutral K's produced in hydrogen and deuterium in the LRL 25 '' hydrogen bubble chamber. The particles originate as K-bar{sup 0} in K{sup -} change-exchange scatters at .85 to 1.15 Bev/c; the signature for an S = -1 reaction is the production of a hyperon. Seventy- seven events were found, obtaining {Delta}{omega} = 0.50 =- 0.15, measure… more
Date: April 1, 1966
Creator: Camerini, U.; Cline, D.; English, J. B.; Fischbein, W.; Fry, W. F.; Gaidos, J. A. et al.
Partner: UNT Libraries Government Documents Department
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Early Brain Response to Low-Dose Radiation Exposure Involves Molecular Networks and Pathways Associated with Cognitive Functions, Advanced Aging and Alzheimer's Disease

Description: Understanding the cognitive and behavioral consequences of brain exposures to low-dose ionizing radiation has broad relevance for health risks from medical radiation diagnostic procedures, radiotherapy, environmental nuclear contamination, as well as earth orbit and space missions. Analyses of transcriptome profiles of murine brain tissue after whole-body radiation showed that low-dose exposures (10 cGy) induced genes not affected by high dose (2 Gy), and low-dose genes were associated with uni… more
Date: June 6, 2008
Creator: Lowe, Xiu R; Bhattacharya, Sanchita; Marchetti, Francesco & Wyrobek, Andrew J.
Partner: UNT Libraries Government Documents Department
open access

Measurement of the radiation field surrounding the Collider Detector at Fermilab

Description: We present here the first direct and detailed measurements of the spatial distribution of the ionizing radiation surrounding a hadron collider experiment. Using data from two different exposures we measure the effect of additional shielding on the radiation field around the Collider Detector at Fermilab (CDF). Employing a simple model we parameterize the ionizing radiation field surrounding the detector.
Date: January 28, 2004
Creator: al., K. Kordas et
Partner: UNT Libraries Government Documents Department
open access

Numerical Simulation of Table-Top Tunable Smith-Purcell Teraherz Free-Electron Laser Operating in the Superradiant Regime

Description: Terahertz (THz) radiation occupies a very large portion of the electromagnetic spectrum and has generated much recent interest due to its ability to penetrate deep into many organic materials without the damage associated with ionizing radiation such as x-rays. One path for generating copious amount of tunable narrow-band THz radiation is based on the Smith-Purcell free-electron laser (SPFEL) effect. In this Letter we propose a simple concept for a compact tunable SPFEL operating in the superra… more
Date: January 1, 2010
Creator: Prokop, C.; Piot, P.; Lin, M.C.; Stoltz, P. & U., /Fermilab /Northern Illinois
Partner: UNT Libraries Government Documents Department
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Nevada Test Site Radiation Protection Program

Description: Title 10 Code of Federal Regulations (CFR) 835, 'Occupational Radiation Protection', establishes radiation protection standards, limits, and program requirements for protecting individuals from ionizing radiation resulting from the conduct of U.S. Department of Energy (DOE) activities. 10 CFR 835.101(a) mandates that DOE activities be conducted in compliance with a documented Radiation Protection Program (RPP) as approved by DOE. This document promulgates the RPP for the Nevada Test Site (NTS),… more
Date: August 9, 2007
Creator: Radiological Control Managers' Council, Nevada Test Site
Partner: UNT Libraries Government Documents Department
open access

Start-to-end simulation of a Smith-Purcell free electron laser

Description: Terahertz (THz) radiation has generated much recent interest due to its ability to penetrate deep into many organic materials without the damage associated with ionizing radiations. Smith-Purcell free-electron lasers (SPFELs) offer a viable path toward generating copious amounts of narrow-band THz radiation. In this paper we present numerical simulations, performed with the conformal finite-difference time-domain electromagnetic solver VORPAL of a SPFEL operating in the superradiant regime. We … more
Date: August 1, 2010
Creator: Prokop, C.; U., /Northern Illinois; Piot, P; /Fermilab, /Northern Illinois U.; Lin, M.C.; Stoltz, P. et al.
Partner: UNT Libraries Government Documents Department
open access

beta 1 integrin inhibition dramatically enhances radiotherapy efficacy in human breast cancer xenografts

Description: {beta}1 integrin signaling has been shown to mediate cellular resistance to apoptosis after exposure to ionizing radiation (IR). Other signaling molecules that increase resistance include Akt, which promotes cell survival downstream of {beta}1 integrin signaling. We showed previously that {beta}1 integrin inhibitory antibodies, AIIB2, enhance apoptosis and decrease growth in human breast cancer cells in 3 dimensional laminin-rich extracellular matrix (3D lrECM) cultures and in vivo. Here we ask… more
Date: June 2, 2008
Creator: Park, Catherine C.; Park, Catherine C.; Zhang, Hui J.; Yao, Evelyn S.; Park, Chong J. & Bissell, Mina J.
Partner: UNT Libraries Government Documents Department
open access

Science& Technology Review July/August 2003

Description: This month's issue has the following articles: (1) Calling All Nuclear Scientists--Commentary by Tomas Diaz de la Rubia; (2) An Inside Attack on Cancer--Customizing the diagnosis and treatment of cancer, for individual cancers and individual patients, is the goal of a Livermore research initiative; (3) Cells Respond Uniquely to Low-Dose Ionizing Radiation--Mammalian cells and tissues exposed to low-level radiation respond by switching on hundreds of genes specialized in repairing damaged chromo… more
Date: July 1, 2003
Creator: McMahon, D H
Partner: UNT Libraries Government Documents Department
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THE EFFECT OF IONIZING RADIATION ON U6+ -PHASES

Description: U{sup 6+}-minerals commonly form during the alteration of uraninite and spent nuclear fuel under oxidizing conditions. By the incorporation of actinides and fissiogenic elements into their structures, U{sup 6+}-minerals may be important in retarding the migration of radionuclides released during corrosion of spent nuclear fuel. Thus, the stability and the structural transformation of the U{sup 6+}-minerals in radiation fields are of great interest.
Date: July 7, 2005
Creator: Utsunomiya, S. & Ewing, R. C.
Partner: UNT Libraries Government Documents Department
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Historical Exposures to Chemicals at the Rocky Flats Nuclear Weapons Plant: A Pilot Retrospective Exposure Assessment

Description: In a mortality study of white males who had worked at the Rocky Flats Nuclear Weapons Plant between 1952 and 1979, an increased number of deaths from benign and unspecified intracranial neoplasms was found. A case-control study nested within this cohort investigated the hypothesis that an association existed between brain tumor death and exposure to either internally deposited plutonium or external ionizing radiation. There was no statistically significant association found between estimated ra… more
Date: February 1, 1999
Creator: Robertson, Janeen Denise
Partner: UNT Libraries Government Documents Department
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Ionizing radiation predisposes non-malignant human mammaryepithelial cells to undergo TGF beta-induced epithelial to mesenchymaltransition

Description: Transforming growth factor {beta}1 (TGF{beta}) is a tumor suppressor during the initial stage of tumorigenesis, but it can switch to a tumor promoter during neoplastic progression. Ionizing radiation (IR), both a carcinogen and a therapeutic agent, induces TGF{beta}, activation in vivo. We now show that IR sensitizes human mammary epithelial cells (HMEC) to undergo TGF{beta}-mediated epithelial to mesenchymal transition (EMT). Non-malignant HMEC (MCF10A, HMT3522 S1 and 184v) were irradiated wit… more
Date: April 6, 2007
Creator: Andarawewa, Kumari L.; Erickson, Anna C.; Chou, William S.; Costes, Sylvain; Gascard, Philippe; Mott, Joni D. et al.
Partner: UNT Libraries Government Documents Department
open access

FEASIBILITY STUDY OF A NEW MASS FLOW SYSTEM. Quarterly Report No. 1 Covering the Period from June 1 to September 1, 1960. With this is bound: QUARTERLY REPORT NO. 1 FOR PERIOD FROM JULY 15TO SEPTEMBER 1, 1960

Description: A mass flow measurement technique is described which has the capability of measuring homogeneous flow, slurries, highly corrosive fluids, and multiphase fluids. The device features ruggedness and reliability and has the ability to measure external to the flow. In the proposed system, the fluid is made to pass through a U-shaped tube wherein measurements of the augular momentum and density yield mass flow directly. As the fluid traverses the 180 deg bend, a radial force is generated, which can b… more
Date: September 21, 1960
Creator: Burgwald, G. M. & Genthe, W. K.
Partner: UNT Libraries Government Documents Department
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11th International Conference of Radiation Research

Description: Topics discussed in the conference included the following: Radiation Physics, Radiation Chemistry and modelling--Radiation physics and dosimetry; Electron transfer in biological media; Radiation chemistry; Biophysical and biochemical modelling; Mechanisms of DNA damage; Assays of DNA damage; Energy deposition in micro volumes; Photo-effects; Special techniques and technologies; Oxidative damage. Molecular and cellular effects-- Photobiology; Cell cycle effects; DNA damage: Strand breaks; DNA da… more
Date: July 18, 1999
Partner: UNT Libraries Government Documents Department
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Quasar H II Regions During Cosmic Reionization

Description: Cosmic reionization progresses as HII regions form around sources of ionizing radiation. Their average size grows continuously until they percolate and complete reionization. We demonstrate how this typical growth can be calculated around the largest, biased sources of UV emission such as quasars by further developing an analytical model based on the excursion set formalism. This approach allows us to calculate the sizes and growth of the HII regions created by the progenitors of any dark matte… more
Date: March 30, 2007
Creator: Alvarez, Marcelo A.; Abel, Tom & /KIPAC, Menlo Park
Partner: UNT Libraries Government Documents Department
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