One of the most common cases of instability in crystal structure refinements is when the atomic displacement parameters refine to appreciably negative values.
No effort was made to further refine model parameters to ensure a more accurate prediction.
The Rietveld method was used to refine the structural parameters (cell parameters, atomic position, and occupancies) and to calculate the weight content of the existing phases in order to study the evolution of phase composition and phase abundance of the milled mixture.
The results suggest that measurements of the variation of kerogen properties performed potentially using cuttings, cores, or logs can be used to refine parameters in reservoir simulations.
On the basis of coding results and interview data, decisions were made to refine parameters in describing reading proficiency.
We developed a post-refinement method for still diffraction images, such as those obtained at XFELs, and implemented it in new computer program, prime, that applies a least-squares minimization method to refine parameters as defined in our partiality model.
Because the two orthogonal axes of tilt can be independently and continuously adjusted, it is possible to use this device to successively refine tilt parameters from preparation to preparation for optimal exposure of circuits of interest, facilitating the development of new slice preparations.
The MCMC runs were repeated to refine skyline parameters and the convergence of the chains to the stationary distribution was confirmed by effective sample size (>100) for all parameters using TRACER (Rambaut et al. 2014).
Current and emerging markers must be incorporated prospectively into the design of clinical trials that test novel and established agents to better understand their clinical utility and to refine selection parameters and marker interactions.
The basis of the method is to approximate the model by a linear one and to refine the parameters by successive iterations.
Then, a relaxation iteration method is developed to refine the parameters of the total model.
