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The green alga Codium fragile ssp. tomentosoides, introduced about 1956 from Western Europe to Long Island, New York, spread north to Cape Cod by 1961 and south to New Jersey by 1966. Two disjunct… (More)
This paper lists and discusses the requirements that must be met by concrete used in construction, and discusses chemical admixtures (freeze protection; extended set control; anti-washout; corrosion… (More)
Abstract : This report documents the results of a task force assessment of deficiencies in portland-cement plaster construction being performed for the Corps of Engineers. A field survey of various… (More)
Abstract : Construction quality management, including the roles and responsibilities of the various participants, in hot and cold weather concreting is discussed. Procedures for overcoming problems… (More)
Procede comprenant les etapes suivantes: la reception d'un numero d'identification permettant d'identifier une unite mobile (36), la mesure de la position par multilateration a partir d'un signal non… (More)