3 research outputs found

    Mechanical behaviour of natural turf sports surfaces

    Get PDF
    The understanding of the mechanical behaviour of natural turf pitches is limited, owed in part to the deficiencies in current testing devices and methodologies. This research aimed to advance the understanding of surface mechanical behaviour through in-situ and laboratory experiments, and via the development of new testing devices. An impact testing device, the Dynamic Surface Tester (DST) was developed, with impacts replicating the magnitude of stress applied by athletes onto turfed surfaces during running. Developmental experiments indicated that the device was sensitive to changes in soil condition due to variations (P<0.05) in impact data. Cont/d

    Critical process parameter identification using the ambr15(tm) for process characterization

    Get PDF
    Process characterization is a critical phase in the development of a commercial process for biotherapeutic production. Knowing the critical quality attributes of your molecule prior to beginning process development and/or characterization is imperative when using a quality by design (QbD) approach. Here we use a (QbD) approach for the characterization of a fed-batch process using an NSO cell line to express an IgG. For this molecule, the glycosylation profile, and in particular, the total fucosylation was identified as a critical quality attribute. After performing a primary hazard analysis, several process inputs were determined to potentially have an impact on this critical quality attribute. These parameters were then studied in a screening DoE using the ambr15â„¢ to model the first and second order effects for each parameter on both the critical quality attributes and process performance. Of the 9 parameters studied, 5 were determined to have a statistically significant effect on the fucosylation of the molecule. In addition, 6 parameters were identified to have a significant impact on process performance. Through process modeling using JMP, a design space was determined for further studies to determine the proven acceptable range (PAR) for each parameter using the 10L, qualified scale down model. An example of the predicted PAR for pH and the timing of the temp shift can be seen in figure 1. Following the 10L studies, a PAR was determined for each parameter and compared with the predicted PAR from ambr. Here we demonstrate the feasibility to use the ambr15â„¢ as a tool for key and even critical process parameter identification to reduce timelines for process characterization