The crop factor method is applied to unstressed maize, in which grass is the reference crop, and the evapotranspiration of the latter is determined with the simpli®ed equation of Makkink as proposed by De Bruin (1987). Using the crop factor published by Feddes (1987), a good agreement is found with
Hill's equation applied to reconstituted contractile collagen
✍ Scribed by R. T. Balmer; R. J. Soto
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1975
- Tongue
- English
- Weight
- 263 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
A new type of automatic force‐displacement recording myograph has been developed to measure the contraction–relaxation characteristics of contractile systems. The device produces a polytonic (variable‐force) load and therefore provides a more realistic measurement than either isometric or isotonic apparatus. Measurements on collagen that was first well ground and then extruded into a reconstituted thin tape show contraction and relaxation behaviour that can be characterized by a slightly modified form of Hill's 1938 equation. The characteristic parameters of the Hill equation determined for the reconstituted collagen were remarkably similar to those of intact muscle tissue.
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