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Pleiotropic drug resistance in cystic fibrosis fibroblasts: Increased resistance to cyclic AMP
Somatic Cell Genetics, 1978In previous studies, cystic fibrosis (CF) fibroblasts were demonstrated to be resistant to the cytotoxic effects of ouabain, dexamethasone, and the sex hormones, dihydrotestosterone, 17beta-estradiol, and progesterone. We now show that CF fibroblasts also exhibit greatly increased resistance to the cytotoxic effects of exogenous dibutyryl cyclic AMP ...
J, Epstein +3 more
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Strength of Materials, 1990
The results are presented of an investigation of the cyclic crack resistance of 15Kh2MFA steel (σ0.2=583.5 MPa, σt = 700 MPa) in a broad range of change in specimen thickness (t=25–150 mm) and conditions of single-frequency (R=0.1–0.75) and double-frequency (q=0.005–0.75, p=1000) cyclic loading. It is established that the combined influence of specimen
V. V. Pokrovskii +2 more
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The results are presented of an investigation of the cyclic crack resistance of 15Kh2MFA steel (σ0.2=583.5 MPa, σt = 700 MPa) in a broad range of change in specimen thickness (t=25–150 mm) and conditions of single-frequency (R=0.1–0.75) and double-frequency (q=0.005–0.75, p=1000) cyclic loading. It is established that the combined influence of specimen
V. V. Pokrovskii +2 more
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Effect of copper on the cyclic crack resistance and heat resistance of graphitic steels
Materials Science, 2004We study the effect of copper content (0.05–3.45 mass %) on the structure of the matrix and graphitic phase of graphitic steels (GS) annealed for globular perlite. It has been established that the effect of copper content on the physicomechanical characteristics of GS is ambiguous.
I. M. Andreiko +4 more
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Superior resistance to cyclic creep in a gradient structured steel
ScienceCyclic creep, or ratcheting, is a severe form of fatigue deformation caused by cumulative unidirectional plastic strain under asymmetrical stress cycling with a nonzero mean stress. It often causes premature failure of structural materials, and enhancing ratcheting resistance is a challenge in materials engineering.
Qingsong Pan +6 more
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Monotonic and cyclic pullout resistance of geosynthetics
2009An evaluation of soil-geosynthetic interface strength for different types of loading is important to the design of any anchorage detail of a reinforced soil structure or membrane-lined waste containment facility. The imposed loadings may be classified as static, repeated non-dynamic or cyclic, and dynamic.
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A role for cyclic hydroxamates in aluminium resistance in maize?
Journal of Inorganic Biochemistry, 2005Hydroxamate siderophores have been found to alleviate Al toxicity in bacteria. In Poaceae plants cyclic hydroxamates, like DIMBOA (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one) and its derivatives have mostly been studied in relation to either defence against insects or allelopathy.
Charlotte, Poschenrieder +2 more
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Effect of Cyclic Loading on Ductile Fracture Resistance
Journal of Pressure Vessel Technology, 1991The influence of cyclic loading on ductile fracture toughness was examined from limited experimental data available in the literature. The review indicated that, in the absence of global compressive loads during the unloading cycle (R ≥ 0), the total crack extension generally is the sum of the monotonic component (Δamono) and the cyclic component ...
C. W. Marschall, G. M. Wilkowski
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Model prediction of cyclic liquefaction resistance of gassy soils
Acta GeotechnicaThe resistance to liquefaction of soils can be significantly increased by slightly reducing the degree of saturation. Many experimental studies demonstrated that the augmented compressibility of the pore fluid mixture composed by entrapped bubbles within a continuous fluid phase reduces the amount of seismically induced excess pore water pressure.
Lucia Mele +3 more
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Effect of Overconsolidation on Cyclic Resistance of Soils
Journal of Geotechnical and Geoenvironmental Engineering, 2022Jiarui Chen, Scott M. Olson
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Resistance of a cyclic peptide to enzymic attack
Chemical Communications (London), 1965G. W. Kenner, A. H. Laird
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