By manjunath and fantin marius
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Extra info for Aero Acoustics of Fixed Wing and Rotary Wing Aircraft
13, 105-173 15. Ibel, K. and Stuhrmann, H. B. (1975) Comparison of neutron and X-ray scattering of dilute myoglobin solutions J. Mol. Biol 93,255-266. 16. Rol’bm, Yu. , Kayushma, R. , Felgin, L. , and Shchredm, B. M. (1973) Calculation of the small-angle X-ray scattering intensity on a computer using a macromolecule model Kristullogrujiya 18, 701-705. 17. Cusack, S. (1981) Instrumental effects on the scattering curves (Appendix). J Mol. Biol. I&,539-541 18 Perkins, S. J. and Weiss, H. (1983) Low resolution structural studies of mrtochondrial ubiqumol-cytochrome c reductase in detergent solutions by neutron scattering.
Redrawn from ref 5 Harding 64 2. 1. 2 mg/mL up to the solubility limit). It is a useful tool for assaying whether the protein solutions are still homogeneous in the very high concentrations often used for NMR. 2. Sedimentation Coefficient Evaluation For the determination of sedimentation coefficients, sozO,,,we measure the rate of movement of the sedimenting boundary, recorded using refractometric (classical “schlieren” optics) or scanning absorption optics. ” The necessary hydrodynamic theories have now been developed, so that the structures of complex macromolecules can be modeled using the sedimentation coefficient and related parameters (10).
A sufficiently large sample-detector distance is therefore needed in order to access a low enough Q value. If in doubt, it is preferable to err on the side of lower Q, even though such curves are usually more difficult to measure. For Perkins neutron scattering, a choice of wavelength h is required. 0 nm or greater is that no corrections are required in absolute mol-wt calculations (II). In X-ray work, the instrument requires calibration. The Q range on the detector is defined using wet slightly stretched collagen, which has a diffraction spacing of 67 nm.