Geopartner (Poland)

<strong class="journal-contentHeaderColor">Abstract.</strong> LKAB currently runs an intense exploration program focused on the Per Geijer (PG) iron oxide-apatite mineralization, close to the active Kiruna mine, in northern Sweden. The mineralization and the hosting volcanic units dip at an angle of 50&ndash;60 degrees and are overlain by quartzite. Greenstones are also present in the area. The iron mineralization is associated with high levels of phosphorus and REEs. As a major part of the mineralization occurs at depths &gt;500 m, various geophysical surveys have been used to assist the exploration throughout the years, recently also including seismic measurements. An initial pilot reflection profile in 2021 showed promising results, and three additional profiles were acquired shortly afterwards, all with Vibroseis as a source. These were followed by downhole seismics (VSP) in two drill holes. During 2024 a 3D survey covering the Per Geijer mineralization was also acquired. Clear P-wave reflections are visible in the shot records from the surface seismics as well as in the downhole seismics, and the latter also show interpreted P-S reflections. The steeply dipping structures in the area complicate the data processing, and out-of-the-plane reflections are present in some of the 2D profiles, the latter confirmed via cross-dip analysis. The resulting migrated sections and volumes show prominent reflections, some of which correlate with the Per Geijer mineralization or units close to it and suggest some extensions of the known mineralization. Reflections are also observed from the northern end of the nearby Kiirunavaara ore. Sonic and density logs are available to support the interpretation. These indicate that the main cause of the reflections from the iron mineralization is the density contrast, rather than the velocity contrasts. The downhole seismics also allow a closer link to the drilling information. Further notable in both our 2D and 3D surface data is a high-amplitude reflection originating from a steeply dipping structure outside the survey area, which if projected to the surface correlates with older greenstones on the western side of the Kiirunavaara orebody.

BackgroundGenomic testing can add risk stratification information to clinicopathological features in prostate cancer, aiding in shared medical decision-making between the clinician and patient regarding whether active surveillance (AS) or definitive treatment (DT) is most appropriate. Here we examined initial AS selection and 3-year AS durability in patients diagnosed with localized intermediate-risk prostate cancer who underwent Prolaris testing before treatment decision-making.MethodsThis retrospective observational cohort study included 3208 patients from 10 study sites who underwent Prolaris testing at diagnosis from September 2015 to December 2018. Prolaris utilizes a combined clinical cell cycle risk score calculated at diagnostic biopsy to stratify patients by the Prolaris AS threshold (below threshold, patient recommended to AS or above threshold, patient recommended to DT). AS selection rates and 3-year AS durability were compared in patients recommended to AS or DT by Prolaris testing. Univariable and multivariable logistic regression models and Cox proportional hazard models were used with molecular and clinical variables as predictors of initial treatment decision and AS durability, respectively.ResultsAS selection was ~2 times higher in patients recommended to AS by Prolaris testing than in those recommended to DT (p < 0.0001). Three-year AS durability was ~1.5 times higher in patients recommended to AS by Prolaris testing than in those recommended to DT (p < 0.0001). Prolaris treatment recommendation remained a statistically significant predictor of initial AS selection and AS durability after accounting for CAPRA or Gleason scores.ConclusionsProlaris added significant information to clinical risk stratification to aid in treatment decision making. Intermediate-risk prostate cancer patients who were recommended to AS by Prolaris were more likely to initially pursue AS and were more likely to remain on AS at 3 years post-diagnosis than patients recommended to DT.

How do emerging market multinational enterprises (EMNEs) build global ecosystems through cross-border mergers and acquisitions? This research conducts case studies on Haier Group's post-merger integration processes of 4 overseas companies. This paper proposes a three-dimension theoretical framework to understand global ecosystem development: ecosystem structure, ecosystem stage, ecosystem element. This paper finds that, unlike the linear structure of global supply chains and value chains, the global ecosystem has a non-linear, multi-agent structure composed of value chains and resource pools. In the process of building a global ecosystem, a dynamic three-stage process of influence, integration, and evolution emerges. At different stages, the focal firm of the ecosystem has shown heterogeneous focus in terms of ecosystem vision, ecosystem system and ecosystem capability. The research findings integrate business ecosystem theory and cross-border M&A theory, which have practical implications for EMNEs to go global and establish a global ecosystem.

Abstract. Many metallic mineral deposits have sufficient contrasts, particularly density, to be detectable using seismic methods. These deposits are sometimes significant for our society, economic growth and can help to accelerate the energy transition towards decarbonization. However, their exploration at depth requires high-resolution and sensitive methods. Following a series of 2D seismic trials, a sparse, narrow source-receiver azimuth, 3D seismic survey was conducted in the Blötberget mine, in central Sweden, covering an area of approximately 6 km2 for deep targeting iron-oxide deposits and their host rock structures. The survey benefited from a collaborative work by putting together 1266 seismic recorders and a 32t vibrator generating 1056 shot points in a fixed geometry setup. A linear sweep ranging from 10–160 Hz and 20 s long was generated three times per shot point. Shots were fired at every 10 m where possible and receivers placed at every 10–20 m. Notable quality data were acquired although the area is dominated by swampy places as well as by built-up roads and historical tailings. The data processing had to overcome these challenges in particular for the static corrections and strong surface-waves. A tailored for hardrock-setting-processing workflow was developed for handling such a dataset, where the use of mixed 2D and 3D refraction static corrections were relevant. The resulting seismic volume is rich in terms of reflectivity with clear southeast dipping reflections originated from iron-oxide deposits extending vertically and laterally at least 300 m beyond what was known from boreholes. We estimate potential additional resources from the 3D reflection seismic experiment on the order of 10 Mt worth drilling for detailed assessments. The mineralization is crosscut by at least two major sets of northwest dipping reflections interpreted to be dominantly normal faults and responsible for much of the lowland in the Blötberget area. Moreover, these post-mineralization faults likely control the current 3D geometry of the deposits. Curved and submerged reflections interpreted from folds or later intrusions are also observed showing the geological complexity of the study area. The seismic survey also delineates the near-surface expression of a historical tailing as a by-product of refraction static corrections demonstrating why 3D seismic data. The sparse 3D survey illustrates that performing cost-effective reflection surveys for mineral exploration is achievable if they are conducted and planned carefully, systematically and based on earlier experiences.

Naervaerende artikel har fokus pa de kommende aendringer i ejendomsdannelsen. AEndringerne far en raekke konsekvenser for de centrale aktorer i ejendomsdannelses-processen; kommunerne, Tinglysningsretten, Geodatastyrelsen samt de praktiserende landinspektorer. Baggrunden for aendringerne bygger pa de malsaetninger, der er opstillet i Grund dataprogrammet og herunder delprogrammet for ejendomsdata, ivaerksat af Digitaliseringsstyrelsen. Implementering af programmet ledes af Styrelsen for Dataforsyning og Eff ektivisering og udmontes igennem et samarbejde mellem Kommunernes Landsforening, Domstolsstyrelsen og Geodatastyrelsen.

In this paper, a Pareto inversion based global optimization approach, to obtain results of joint inversion of two types of geophysical data sets, is formulated. 2D magnetotelluric and gravity data were used for tests, but presented solution is flexible enough to be used for combination of any kind of two or more target functions, as long as misfits can be calculated and forward problems solved. To minimize dimensionality of the solution, space and introduce straightforward regularization Sharp Boundary Interface (SBI) method was applied. As a main optimization engine, Particle Swarm Optimization (PSO) was used. Synthetic examples based on a real geological model were used to test proposed approach and show its usefulness in practical applications.