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UNEXUP: robot-based exploration technology for underground flooded mines
Márcio Tameirão Pinto, Gorazd Žibret, Luís Lopes, Balázs Bodó, Norbert Zajzon, 2020, izvirni znanstveni članek

Povzetek: UNEXUP is a direct continuation of the UNEXMIN project. In UNEXMIN efforts were made towards the design, development and testing of a robotic exploration technology for underground flooded mines, with navigational and geoscientific instruments. In UNEXUP the main goal is to raise commercial interest and improve the system's hardware, software and capabilities. The UX-1 NEO, to be developed and tested in 2020, will address the limitations detected during UNEXMIN field missions, and will meet the needs and requirements from mining companies, geological surveys and other potential customers. In addition, a new robot will be built and added to the system, to be ready in 2021, which will open further mineral exploration possibilities.
Objavljeno v DiRROS: 07.01.2021; Ogledov: 1445; Prenosov: 703
.pdf Celotno besedilo (1,68 MB)

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ROBOMINERS - Developing a bio-inspired modular robot-miner for difficult to access mineral deposits
Luís Lopes, Balázs Bodó, Claudio Rossi, Stephen Henley, Gorazd Žibret, Alicja Kot-Niewiadomska, Vitor Correia, 2020, izvirni znanstveni članek

Povzetek: Within the ROBOMINERS project an innovative technology for the future exploitation of small and difficult to access mineral deposits is being studied. The project has two main objectives. First, the development of a bioinspired reconfigurable robotic miner prototype, able to navigate, explore and mine selectively with a certain degree of autonomy. The robot-miner will be able to work under different conditions, making the exploitation of many mineral deposits economically feasible, while reducing social and environmental impacts associated with conventional mining methods. The second objective is the creation of a vision of a new mining ecosystem, its function, parts, research roadmaps and visions for years 2030 and 2050, including creation of novel ideas from other sectors, particularly robotics. The robotic ecosystem concept will be tested in representative sites across Europe with simulations, showcasing the different mining environments and conditions where it can be applied.
Ključne besede: avtonomni robot, rudniki, prospekcija, mineralne surovine
Objavljeno v DiRROS: 06.01.2021; Ogledov: 1560; Prenosov: 673
.pdf Celotno besedilo (2,56 MB)

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Comparison of European ICU patients in 2012 (ICON) versus 2002 (SOAP)
Jean Louis Vincent, Jean-Yves Lefrant, Katarzyna Kotfis, Rahul Nanchal, Ignacio Martin-Loeches, Samir G. Sakka, Xavier Wittebole, Peter Pickkers, Rui P. Moreno, Yasser Sakr, 2018, izvirni znanstveni članek

Povzetek: Purpose: To evaluate differences in the characteristics and outcomes of intensive care unit (ICU) patients over time. Methods: We reviewed all epidemiological data, including comorbidities, types and severity of organ failure, interventions, lengths of stay and outcome, for patients from the Sepsis Occurrence in Acutely ill Patients (SOAP) study, an observational study conducted in European intensive care units in 2002, and the Intensive Care Over Nations (ICON) audit, a survey of intensive care unit patients conducted in 2012. Results: We compared the 3147 patients from the SOAP study with the 4852 patients from the ICON audit admitted to intensive care units in the same countries as those in the SOAP study. The ICON patients were older (62.5 +/- 17.0 vs. 60.6 +/- 17.4 years) and had higher severity scores than the SOAP patients. The proportion of patients with sepsis at any time during the intensive care unit stay was slightly higher in the ICON study (31.9 vs. 29.6%, p = 0.03). In multilevel analysis, the adjusted odds of ICU mortality were significantly lower for ICON patients than for SOAP patients, particularly in patients with sepsis [OR 0.45 (0.35-0.59), p < 0.001]. Conclusions: Over the 10-year period between 2002 and 2012, the proportion of patients with sepsis admitted to European ICUs remained relatively stable, but the severity of disease increased. In multilevel analysis, the odds of ICU mortality were lower in our 2012 cohort compared to our 2002 cohort, particularly in patients with sepsis.
Ključne besede: intensive care units -- analysis -- epidemiology -- mortality, sepsis, severity of disease
Objavljeno v DiRROS: 30.11.2020; Ogledov: 1601; Prenosov: 1105
.pdf Celotno besedilo (867,51 KB)
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The clinical relevance of oliguria in the critically ill patient : analysis of a large observational database
Jean Louis Vincent, Andrew Ferguson, Peter Pickkers, Stephan M. Jakob, Ulrich Jaschinski, Ghaleb A. Almekhlafi, Marc Leone, Majid Mokhtari, Luis E. Fontes, Philippe R. Bauer, Yasser Sakr, 2020, izvirni znanstveni članek

Povzetek: Background: Urine output is widely used as one of the criteria for the diagnosis and staging of acute renal failure, but few studies have specifically assessed the role of oliguria as a marker of acute renal failure or outcomes in general intensive care unit (ICU) patients. Using a large multinational database, we therefore evaluated the occurrence of oliguria (defined as a urine output < 0.5 ml/kg/h) in acutely ill patients and its association with the need for renal replacement therapy (RRT) and outcome. Methods: International observational study. All adult (> 16 years) patients in the ICON audit who had a urine output measurement on the day of admission were included. To investigate the association between oliguria and mortality, we used a multilevel analysis. Results: Of the 8292 patients included, 2050 (24.7%) were oliguric during the first 24 h of admission. Patients with oliguria on admission who had at least one additional 24-h urine output recorded during their ICU stay (n = 1349) were divided into three groups: transient-oliguria resolved within 48 h after the admission day (n = 390 [28.9%]), prolonged-oliguria resolved > 48 h after the admission day (n = 141 [10.5%]), and permanent-oliguria persisting for the whole ICU stay or again present at the end of the ICU stay (n = 818 [60.6%]). ICU and hospital mortality rates were higher in patients with oliguria than in those without, except for patients with transient oliguria who had significantly lower mortality rates than non-oliguric patients. In multilevel analysis, the need for RRT was associated with a significantly higher risk of death (OR = 1.51 [95% CI 1.19%1.91], p = 0.001), but the presence of oliguria on admission was not (OR = 1.14 [95% CI 0.97%1.34], p = 0.103). Conclusions: Oliguria is common in ICU patients and may have a relatively benign nature if only transient. The duration of oliguria and need for RRT are associated with worse outcome.
Ključne besede: critical care, critical illness, urine, oliguria, kidney, renal insufficiency, kidney diseases, acute kidney failure, mortality, urine output, renal replacement therapy
Objavljeno v DiRROS: 18.11.2020; Ogledov: 1572; Prenosov: 1007
.pdf Celotno besedilo (727,74 KB)
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