This study is thus aimed at investigating the effect of fractionation on antibacterial activity of its n-butanol fraction.The extract of E. chlorantha stem barks was obtained by maceration in methanol and then subjected to a liquid/liquid partition by successive depletion with solvents of ...
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被引量: 84发表: 2011年 Fracture of Ti-Al3Ti metal-intermetallic laminate composites: Effects of lamination on resistance-curve behavior The fracture toughness and resistance-curve ( R -curve) behavior of Ti-Al 3 Ti metal-intermetallic laminate (MIL) composites have been studied in the crack.....
We combine community transcription pro- filing and rate measurements to quantify size fraction partitioning of key steps of the marine N cycle. These data, coupled with taxonomic analysis of genes and transcripts and estimates of bacteria abundance among size fractions, indicate a significant contribu...
This study was designed to provide a critical test for the postulate that the mismatch between the lattices of austenite (γ) and the age-hardening gamma-prime (γ′) precipitates and the resultant coherency strains have a significant influence on the elevated temperature, particularly stress rupture...
摘要: The paper presents the results of the polymerization of high-boiling fractions of liquid products of pyrolysis containing cyclonentadiene. The properties of the petroleum resins obtained and coatings on its basis were studied.关键词: liquid fractions of pyrolysis products olygomerization ...
Agilent 1100 Series Fraction Collectors User's Guide 71 3 Repairing the Fraction Collector Simple Repairs 4 Disconnect the power cable of the diverter valve from the connector on the front of the z-arm. 5 Using the 2 mm hex key loosen the holding screw of the diverter valve and remove the...
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This study was designed to provide a critical test for the postulate that the mismatch between the lattices of austenite (γ) and the age-hardening gamma-prime (γ′) precipitates and the resultant coherency strains have a significant influence on the elevated temperature, particularly stress rupture...