65 research outputs found
Infecção pelo citomegalovírus em pacientes com síndrome da imunodeficiência adquirida (AIDS): relações clínico-virológicas e anatomopatológicas
Sugarcane root length density and distribution from root intersection counting on a trench-profile
Issued as the Final Report on an Investigation of Field-Made Joints in Prestressed Reinforced Concrete Highway Bridge Girders; Project IHR-303, Illinois Cooperative Highway and Transportation Research Program
Tests of two prestressed concrete composite bridge girders which were continuous
over two spans are reported. Both were I-section girders with cast-inplace
decks, and had spans of about 37 ft (11 m), and were approximately 1/3 scale
models of structures spanning 125 ft (38 m). Each girder was constructed from
three segments which were joined end-to-end by cast-in-place concrete splices.
Modell was post-tensioned after erection of the girders and casting of
the deck and splice concrete. The two end segments, each supported on the final
abutments and on temporary supports located about 1/3 of the span from the central
pier, were pretensioned for their dead loads plus the deck concrete. The central
segment, which was supported on the central pier of the structure plus the two
temporary supports was precast reinforced concrete, plus a small amount of pretensioned reinforcement. Model 2 was externally similar, but was not post-tensioned.
The segments were pretensioned for the final moments, and were joined by splicing
reinforcing bars which extended into the splice region.
Both structures were subjected to a series of loadings to the service load,
design ultimate, and high over-load levels. Both had capacities which were
significantly higher than the design ultimate values. The capacities were
generally predictable on the basis of flexural strength calculations, and shear
did not cause major problems. Joint details in Model l lead to difficulties in
two tests, and this aspect of the design is discussed in detail.State of Illinois Department of TransportationU.S. Department of Transportation. Federal Highway AdministrationProject IHR-30
Counterion-induced modulation in biochemical properties of nitrile functionalized silver(I)- N
Structural adaptation to selective pressure for altered ligand specificity in the Pseudomonas aeruginosa amide receptor, AmiC
Investigation of DNA/BSA binding of three Ru(II) complexes by various spectroscopic methods, molecular docking and their antimicrobial activity
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