Results 261 to 270 of about 2,257,568 (316)

Surface-Responsive Materials

Science, 2002
Synthetic polymers offer a wealth of opportunities to design responsive materials triggered by external stimuli. Changing the length, chemical composition, architecture, and topology of the chains allows response mechanisms and rates to be easily manipulated; and devices based on the entropy of the chains, surface energies, and specific segmental ...
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The response of the surface electrocardiogram to inspiration

Medical Hypotheses, 1985
The waveshape of the electrocardiogram (ECG), as is well known, varies with respiration. This effect was noted from the early days of clinical electrocardiography (1) and has generally been ascribed to changes in the position of the heart. Although it has mostly been regarded as "noise", it is generated by a process and may contain information on the ...
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Phosphatase responsive peptide surfaces

Journal of Materials Chemistry, 2012
The development of interactive surfaces able to respond to biological cues is of interest for the development of next generation biomaterials. We report the design, synthesis and characterisation of an enzyme responsive peptide based surface whose chemical properties change upon catalytic action of alkaline phosphatase (AP).
Zelzer, Mischa, McNamara, Laura E., Scurr, David J., Alexander, Morgan R., Dalby, Matthew J., Ulijn, Rein V.   +5 more
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"Repairing" Response Surface Designs

Technometrics, 1972
This note considers a method, recently described by Dykstra, for augmenting existing data in response surface experiments. Examples are given to show how this relatively simple approach can be usefully applied, not only to design repair problems, but to situations in which the experimenter, after reviewing his initial results, decides to change his ...
T. L. Hebble, T. J. Mitchell
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Relating isobolograms to response surfaces

Toxicology, 1995
The interaction index, isobologram and the appropriate contour of constant response of a dose response surface each offer essentially equivalent information regarding departures from additivity in a chemical combination. The benefit of relating the interaction index and isobolograms to a contour of a fitted dose response surface is that departures from
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Diet space and response surfaces

Journal of Theoretical Biology, 1973
Abstract Proximate analyses of diets for monogastrics are presented as points in an equilateral triangular region of a plane. Arrays of lines of constant dietary energy and lines normal to them are discussed. Examples of growth efficiency of rats and chickens as experimental response to dietary levels of various types of protein are presented.
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"Ridge Analysis" of Response Surfaces

Technometrics, 1963
In a 1959 paper, A. E. Hoerl discussed a method for examining a second order response surface. Thii paper provides a mathematically simpler derivation of the technique and proofs of some stated properties.
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Response Surfaces and Robust Design

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1999
AbstractResponse surface methods can be applied for building both global and mid‐range approximation models, to be used in structural optimization as an interface between analysis tools and optimization algorithms. This approach is particularly promising in those areas, where the structural behaviour or analysis process exhibits noise, because ...
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Cell Response to Surface Stimulation

Nature New Biology, 1972
It has been known for some time that in normal cells growing in culture a relationship exists between cell density and mitotic index1. At a certain saturation density contact inhibition of growth occurs2–4; DNA synthesis decreases and cell division ceases or is drastically reduced.
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The cell surface in immune response

European Journal of Cancer (1965), 1970
Abstract The occurence of tumor specific surface antigens in experimental systems is firmly established and evidence is accumulating for their existence on human lumor cells. Both cell and antibody mediated immune reactions against such antigens can be demonstrated.
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