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Many Australian metallogenic provinces are buried under thick post-mineralization cover. Imaging the depth to prospective basement in this type of geological environment is challenging and improving the reliability of the geophysical images requires incorporating constraints within the geophysical data inversions. In this study, we propose to derive structural depth constraints using a probabilistic magnetotelluric (MT) data driven workflow, to constrain a deterministic 2D MT inversion. The workflow is applied to a profile in the Mount Isa region in Queensland. The results show that a geologically realistic model with sharp resistivity boundaries associated with the depth to basement transition can be recovered even in presence of a conductive sedimentary cover of thickness greater than 500 meters., Open-Access Online Publication: May 31, 2023

We introduce a sequential inversion workflow where we integrate magnetotelluric and magnetic data. We first perform probabilistic MT inversions, from which we derive 2D or 3D probabilities of observing an interface between rock units of contrasting electrical resistivity. Secondly, we use these probabilities to partition the model into domains where different rock units, or combinations thereof, can be observed. Using these domains, we define constraints for magnetic data inversion where the corresponding intervals (joint or disjoint) of magnetic susceptibility are used as spatially varying bound constraints for inversion. After introducing the methodology, we investigate the proof-of-concept using a geologically realistic synthetic model and conclude that the proposed methodology is applicable to field data. We then present ongoing investigations in the Cloncurry area (Queensland) on a 2D line to image the thickness of the sedimentary cover and to reduce interpretation uncertainty., Open-Access Online Publication: March 03, 2023

Neonatal electroencephalogram (EEG), though often perceived as being difficult to record and interpret, is relatively easy to study due to the immature nature of the brain, which expresses only a few well-defined set of patterns. The EEG interpreter needs to be aware of the maturational changes as well as the effect of pathological processes and medication on brain activity. It gives valuable information for the treatment and prognostication in encephalopathic neonates. In this group, serial EEGs or EEG monitoring often gives additional information regarding deterioration/improvement of the brain function or occurrence of seizures.

Neonatal electroencephalogram (EEG), though often perceived as being difficult to record and interpret, is relatively easy to study due to the immature nature of the brain, which expresses only a few well-defined set of patterns. The EEG interpreter needs to be aware of the maturational changes as well as the effect of pathological processes and medication on brain activity. It gives valuable information for the treatment and prognostication in encephalopathic neonates. In this group, serial EEGs or EEG monitoring often gives additional information regarding deterioration/improvement of the brain function or occurrence of seizures.

MBA, North-West University, Potchefstroom Campus The purpose of this study was to evaluate, by means of a survey, the training of mechanical engineers in Sastech. This study was prompted by a suspicion/presumption that the mechanical engineers are not trained properly m Sastech. The method of study comprises a literature study of factors connected to the training of engineers, followed by an empirical survey. The reason for the empirical study was to determine the viewpoint and expectations of engineers, with regards to training of mechanical engineers at Sastech. Sastech is a subsidiary of SASOL responsible for the management of SASOL technology. Training of mechanical engineers in a petrochemical industry like SASOL is important for sustainable development. There are numerous strategic benefits for a company to train their mechanical engineers with regard to industry specific needs. The existence of a motivational climate in the organisation is a prerequisite for the successful training of mechanical engineers. Involvement of all parties in training is necessary to make it a success. Young engineers starting their careers are usually confident and willing to work but if management does not provide a motivational climate for these engineers to work in and to develop, valuable human resources are often wasted. The focus of the dissertation is the critical success factors in training and the existence of a motivational climate to train engineers. In creating a motivating climate strong inputs are required from management, leaders and senior engineers to formulate objectives for training and development. These factors are the input for the transformation process where effort lead to performance. The success of potential development of engineers in SASOL requires inputs and communication from all role players to achieve set standards and objectives. The presence of critical success factors of training, and the existence of a motivational climate are tested in the dissertation by means of a questionnaire. The research was done within the Engineering Support group in Sastech Secunda. The results of the research are reported and recommendations are made for the establishment of a motivational climate to enhance the effectiveness of training of mechanical engineers in Sastech. Masters

As management of respiratory distress syndrome (RDS) advances, clinicians must continually revise their current practice. We report the fourth update of "European Guidelines for the Management of RDS" by a European panel of experienced neonatologists and an expert perinatal obstetrician based on available literature up to the end of 2018. Optimising outcome for babies with RDS includes prediction of risk of preterm delivery, need for appropriate maternal transfer to a perinatal centre and timely use of antenatal steroids. Delivery room management has become more evidence-based, and protocols for lung protection including initiation of CPAP and titration of oxygen should be implemented immediately after birth. Surfactant replacement therapy is a crucial part of management of RDS, and newer protocols for its use recommend early administration and avoidance of mechanical ventilation. Methods of maintaining babies on non-invasive respiratory support have been further developed and may cause less distress and reduce chronic lung disease. As technology for delivering mechanical ventilation improves, the risk of causing lung injury should decrease, although minimising time spent on mechanical ventilation using caffeine and, if necessary, postnatal steroids are also important considerations. Protocols for optimising general care of infants with RDS are also essential with good temperature control, careful fluid and nutritional management, maintenance of perfusion and judicious use of antibiotics all being important determinants of best outcome. (c) 2019 S. Karger AG, Basel