Results 11 to 20 of about 109,697 (226)
TheEscherichia coli ftsK1mutation attenuates the induction of ÏS-dependent genes upon transition to stationary phase [PDF]
FEMS Microbiology Letters, 2002 A mutation in the cell division gene ftsK causes super-induction of sigma(70)-dependent stress defense genes, such as uspA, during entry of cells into stationary phase. In contrast, we report here that stationary phase induction of sigma(S)-dependent genes, uspB and cfa, is attenuated and that sigma(S) accumulates at a lower rate in ftsK1 cells ...
Alfredo A, Diez +2 more
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Dependence of intergranular precipitation on grain boundary characteristics in Ni–Cr–Fe–Mo–Cu alloy
Journal of Materials Research and Technology, 2023 Hastelloy G30 is a typical representative of Ni–Cr–Fe–Mo–Cu alloys, which have excellent corrosion resistance and mechanical properties. High alloying-element content induces a risk of intermetallic precipitation, which is poorly eliminated in steel ...
Zhenhua Wang, Kewei Deng, Bingyang Ma
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Stationary phase-specific expression of theficgene inEscherichia coliK-12 is controlled by therpoSgene product (Ï38) [PDF]
FEMS Microbiology Letters, 1993 The fic gene, near pabA located at 75 min of the Escherichia coli chromosome, was previously identified as the regulatory factor of cell division. In this paper we have examined how fic gene expression is controlled during the growth cycle using a fic-lacZ protein fusion plasmid (pFL1). Its expression was induced at stationary phase while it was nearly
R, Utsumi +7 more
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Effect of Boron Addition on the Precipitation Behavior of S31254
Metals, 2018 To reduce the precipitation of σ phases and to improve the hot workability of S31254 steels, boron has been added into the composition of S31254 to a concentration of 40 ppm. The precipitation behavior was investigated before and after the addition
Jingang Bai +7 more
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Thermal cycling induced stress–assisted sigma phase formation in super duplex stainless steel
Materials & Design, 2019 Thermal cycling induced the phase transformation originated from the physical simulation of power plant on/off operation. The effect of thermal cycling on duplex stainless steel was studied to understand its phase transformation comprehensively.
Jian-Sin Li +7 more
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Journal of Materials Research and Technology, 2023 Effect of Ce and Mn on solidification behaviors and mechanical properties of 7Mo super austenitic stainless steel was investigated via in-situ observations, thermodynamic calculations and microstructural characterization.
Runze Zhang +4 more
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Effect of annealing temperature on the structure and properties of FeCoCrNiMo high-entropy alloy
High Temperature Materials and Processes, 2022 FeCoCrNiMo high-entropy alloy was melted by vacuum arc melting. The alloys were vacuum annealed at 873, 1,073, and 1,273 K, respectively. X-ray diffractometer (XRD), scanning electron microscope (SEM), simultaneous thermal analyzer, microhardness tester,
Sheng Lei +5 more
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Journal of Materials Research and Technology, 2023 The influence of B addition on dissolution behavior of (σ + γ)e eutectics of a 6Mo super austenitic stainless steel S31254 during the homogenization process was investigated by SEM-BSE observations combined with EDS.
Huanyu Tan +6 more
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Effect of Aging treatment on the Evolution of Precipitates in Super Duplex Stainless Steel [PDF]
TeshugangThe precipitation behavior of precipitates in S32750 super duplex stainless steel was studied by aging treatment at 850 ℃. Thermo-Calc software was used to predict the precipitates and phase composition in tested steel.
Luo Renzhi +5 more
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International Journal of Applied Pharmaceutics, 2018 Objective: To obtain the optimum condition of eluent selection for purification of α-mangostin in mangosteen pericarp extract with solid phase extraction (SPE) method.Methods: The analysis was conducted by SPE cartridge octadecylsilane (ODS)-5, solvents used were methanol for conditioning, aqua bidestilated for washing and three different eluents for ...
Febrina Amelia Saputri +2 more
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