Geochemical models of Sb(-As,Au,Ag) mineralization in the Archaean and modern hydrothermal settings : Examples from the Murchison Greenstone Belt and the Manus back-arc basin

The topic of this PhD project was to deduce new geochemical models of Sb(-As,Au,Ag) mineralization in Archaean and modern hydrothermal settings by studying both the Murchison Greenstone Belt (MGB) and the Manus back-arc basin. To emphasise the parallels between these two settings, an in depth qualitative and quantitative research of Sb(-As,Au,Ag) behaviour in magmatic-hydrothermal hypogene and supergene deposits has been preformed. My results show that slight variations in temperature, oxygen fugacity and pH of the percolating fluid in combination with variations in buffering capacities of the host rock materials can cause great diversities in metal and metalloids speciations. Secondly, I have deduced that Sb enrichments occur at temperatures between 250-400 degrees Celsius, dominated by Sb(OH)3 (aq). Secondly, a striking strong correlation between the geochemical behaviour of As-Ag and Sb-Au has been observed. And finally, I would like to remark the importance of geochemical analyses of non-prominent metal concentrations within the field of ore petrology

Family doctor-driven follow-up for adult childhood cancer survivors supported by a web-based survivor care plan

To facilitate family doctor-driven follow-up for adult childhood cancer survivors, we developed a survivor care plan (SCP) for adult survivors and their family doctors. The SCP was accessible for survivors and their family doctors on a secure website and as a printed booklet. It included data on diagnosis, treatment and potential risks as well as recommendations for follow-up. Childhood cancer survivors who were off-treatment >= 5 years, aged >= 18 years and not involved in a long-term follow-up program were eligible. They were advised to visit their family doctor. The endpoints were numbers of participants, adherence of family doctors to the guidelines and satisfaction ratings. The eligibility criteria were fulfilled by 108 survivors. Three family doctors and 15 survivors refused, 10 survivors were non-responders. Of the remaining 80 survivors, 73 survivors visited 72 family doctors. Sixty-nine (96%) family doctors returned data of whom 60 (83%) fully adhered to the recommended tests. The majority of survivors and family doctors were satisfied about the SCP. A (web-based) SCP for survivors and family doctors can serve as an effective communication vehicle to provide adequate shared care by the long-term follow-up clinic and family doctors