10/5/733 00910272 (Item 433 from file: 103) ERA-07-034634; EDB-82-085118 Voss, M.E. Author(s): Fragaszy, R.J.; Title: Laboratory verification of blast-induced liquefaction mechanism. Final report Jan-Jul 81 3 Civil of Dept. (USA). CA Univ., State Diego San Corporate Source: Engineering Publication Date: Oct 1981 p 59 Report Number(s): AD-A-109000/0 ‘ Document Type: Report Language: English Journal Announcement: EDB8203 Availability: NTIS, PC A04/MF AOl. Subfile: ERA (Energy Research Abstracts). Country of Origin: United States Country of Publication: United States Abstract: A mechanism for blast-induced liquefaction was tested in a series of high pressure undrained, isotropic compression tests on saturated samples of Eniwetok beach sand and Ottawa sand. Theory, based on inelastic volume compressibility of sand, was shown to be valid for the case of quasi-static, isotropic loading. Specimens of Eniwetok sand subjected to an initial effective stress of 1 MPa were liquefied by a single cycle of loading of 34 MPa. Specimens of Ottawa sand, tested in the same manner, generated excess pore pressure but not enough to completely liquefy the soil. The errors introduced by flexibility of the testing systems were analyzed and found to be insignificant. Suggestions for future research were made.; Major Descriptors: *NUCLEAR EXPLOSIONS -- SIMULATION; *SAND -- LIQUEFACTION ; *SOILS -- LIQUEFACTION Descriptors: BLAST EFFECTS; DYNAMIC LOADS; ENIWETOK; FLUID MECHANICS; GROUND MOTION; HIGH PRESSURE; PRESSURE DEPENDENCE; SATURATION; SOIL MECHANICS; STATIC LOADS; STRESSES; VOLUME Broader Terms: EXPLOSIONS; ISLANDS; MARSHALL ISLANDS; MECHANICS; MICRONESIA 7; MOTION; OCEANIA; THERMOCHEMICAL PROCESSES Subject Categories: 450200* -- Military Technology, Weaponry, Defense -- Nuclear Explosions & Explosives & National 10/5/734 (Item 434 from file: 103) 00892006 AIX~-13-651221; ERA-07-028436; EDB~82-066849 Title: Low-level laboratory for alpha and gamma counting of environmental samples Author(s): Schell, W.R.; Vick, C.E.; Wurtz, E.A. (Washington Univ., Seattle (USA). Lab. of Radiation Ecology) Title: Methods of low-level counting and spectrometry. Proceedings Series IAEA international symposium on methods of low-level counting and spectrometry Conference Location: Berlin, F.R. Germany Publisher: IAEA,Vienna, Austria Publication Date: 1981 p 125-149 Report Number(s): CONF-810409-; Conference Date: STI/PUB-592; 6 Apr 1981 IAEA-SM-252/22 Document Type: Analytic of a Book; Conference literature Language: English Journal Announcement: EDB8202 Subfile: ERA (Energy Research Abstracts); AIX (non-US Atomindex input). Country of Origin: United States Country of Publication: International Atomic Energy Agency <IAEA> Abstract: The development of a low-level counting laboratory for the measurement of alpha- and gamma-ray emitting radionuclides in environmental samples is presented. A microcomputer-based counting system has been set up which consists of 12 Si-surface barrier detectors and four Ge(Li) 9003924 Conference Title: detectors and associated analog-to-digital converters interfaced to a Nuclear Data Corporation ND6620 data acquisition and processing system. Sample preparation includes Ge(Li) detector calibration of a few container sizes and several counting Matrix densities. A procedure for /sup 241/Pu analysis has been adapted