scholarly journals Atomic diffusion and point defects in crystals. Final report. Progress report, April 1, 1956--August 31, 1972

1972 ◽  
Author(s):  
Lawrence M. Slifkin
Keyword(s):  
Point Defects ◽  
Progress Report ◽  
Defects In Crystals ◽  
Atomic Diffusion ◽  
Final Report

Defects in Crystals

1968 ◽  
Vol 26 ◽  
pp. 244-245
Author(s):  
Kenneth R. Lawless
Keyword(s):  
Electron Microscope ◽  
Point Defects ◽  
Surface Defects ◽  
Chemical Properties ◽  
Material Point ◽  
Crystal Defects ◽  
Defects In Crystals ◽  
Irradiation Effects ◽  
Normal Lattice ◽  
Line Defects

One of the most important applications of the electron microscope in recent years has been to the observation of defects in crystals. Replica techniques have been widely utilized for many years for the observation of surface defects, but more recently the most striking use of the electron microscope has been for the direct observation of internal defects in crystals, utilizing the transmission of electrons through thin samples.Defects in crystals may be classified basically as point defects, line defects, and planar defects, all of which play an important role in determining the physical or chemical properties of a material. Point defects are of two types, either vacancies where individual atoms are missing from lattice sites, or interstitials where an atom is situated in between normal lattice sites. The so-called point defects most commonly observed are actually aggregates of either vacancies or interstitials. Details of crystal defects of this type are considered in the special session on “Irradiation Effects in Materials” and will not be considered in detail in this session.

Characterizing noise barriers: SOPRANOISE half-term progress report

2021 ◽  
Vol 263 (3) ◽  
pp. 3663-3674
Author(s):  
Jean-Pierre Clairbois ◽  
Massimo Garai ◽  
Wolfram Bartolomaeus ◽  
Michael Chudalla ◽  
Fabio Strigari ◽  
...  
Keyword(s):  
Test Methods ◽  
Progress Report ◽  
Physical Significance ◽  
Final Report ◽  
Noise Barriers ◽  
Railway Noise ◽  
Development Phases ◽  
Effective Use

SOPRANOISE targets simplified assessment of the in-situ intrinsic acoustic performances of road / railway noise barriers. This paper presents its half-term progress. The research is divided in 5 Work Packages, the scientific ones being WP2 to WP5.WP2 is about establishing a state of art (SoA) of the intrinsic performances characterization: it is now finished and presented in 2 other papers by Conter and Fuchs. WP3 is about in-situ inspection tools: based on a review / questionnaire, an inspection protocol has been developed allowing simplified assessments mainly based on visual inspections and characterization of possible defects; WP3 is now in its final testing phase. WP4 is about designing a brand new "quick and safe methods" that could take place "in between" the inspection tools and the standardized EN1793-5 and 6; the research and development phases of WP4 are now finished, while its validation along highways is now scheduled. Finally, WP5 is about the use of noise barriers in the European market and the final report: a synthesis on the physical behavior of noise barriers and the physical significance of the test methods has been done, as well a SoA on the effective use of noise barriers; the results will be presented.

The Pennsylvania University Museum's Demeter and Persephone Sanctuary Project at Cyrene: A Final Progress Report?

1989 ◽  
Vol 20 ◽  
pp. 71-75 ◽  
Author(s):  
D. White
Keyword(s):  
Progress Report ◽  
Final Report ◽  
Short Report ◽  
Work In Progress ◽  
Final Study ◽  
Published Report ◽  
Sanctuary Of Demeter ◽  
Demeter And Persephone

Trigeminated at more or less the same time as the First of September Revolution and the appearance of the first published report from The Society for Libyan Studies, the excavation phase of the extramural Sanctuary of Demeter and Persephone project at Cyrene ran until 1978 when it was stopped in order to begin work on final publication. The intervening years have seen a degree of progress, and this retrospective vicenary issue of Libyan Studies provides a welcome opportunity to take stock of what has been and is going on. The journal's readers will already have some familiarity with the broad outlines of the sanctuary project, since summary articles have been published in an earlier issue (White 1978) and elsewhere (Vickers and Reynolds 1972; Kane 1979; Humphrey 1980; White 1981). In addition reviews of the three published volumes of the final report (White 1984; Schaus 1985; Lowenstam et al. 1987) have appeared here with exemplary promptitude (Lloyd 1985; Boardman 1986; Fulford 1988), as well as externally (Brown 1986; Tomlinson 1986; Cook 1987). The present article's bibliographical citations list what has been written about the sanctuary, but omit the series of preliminary reports in Libya Antiqua (between Vols. 8 and 16) and American Journal of Archaeology (Vols. 78 and 80), whose inclusion would be redundant, as would be any attempt to minute the contents of the reviewed final study volumes. Instead my present intention is to give a short report on work in progress and to summarise the results of what has already been published in separate studies outside the framework of the final publication.

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