Search Results - "Leis, Albrecht"

Oxygen isotopic fractionation during inorganic calcite precipitation ― Effects of temperature, precipitation rate and pH by Dietzel, Martin, Tang, Jianwu, Leis, Albrecht, Köhler, Stephan J.

“…Stable oxygen isotopic fractionation during inorganic calcite precipitation was experimentally studied by spontaneous precipitation at various pH (8.3 < pH <…”
Get full text

Rapid ikaite (CaCO3·6H2O) crystallization in a man-made river bed: Hydrogeochemical monitoring of a rarely documented mineral formation by Boch, Ronny, Dietzel, Martin, Reichl, Peter, Leis, Albrecht, Baldermann, Andre, Mittermayr, Florian, Pölt, Peter

“…During repository building measures a natural river was relocated and the water was directed through a new, artificial river bed lined with a concrete basement…”
Get full text

Lubricating Oil Consumption Measurement on Large Gas Engines by Rossegger, Bernhard, Leis, Albrecht, Vareka, Martin, Engelmayer, Michael, Wimmer, Andreas

“…Increasing the reliability of combustion engines while further reducing emissions and life cycle costs are the main drivers for optimizing lubricating oil…”
Get full text

Fracture dolomite as an archive of continental palaeo-environmental conditions by Baldermann, Andre, Mittermayr, Florian, Bernasconi, Stefano M., Dietzel, Martin, Grengg, Cyrill, Hippler, Dorothee, Kluge, Tobias, Leis, Albrecht, Lin, Ke, Wang, Xianfeng, Zünterl, Andrea, Boch, Ronny

“…The origin of Quaternary dolomites in continental environments (e.g. karst and lakes) is barely constrained compared to marine dolomites in sedimentary…”
Get full text

Overview of isotopic investigations of groundwaters in a fractured aquifer system near Rogaška Slatina, Slovenia by Trček, Branka, Leis, Albrecht

“…The isotopic investigations of groundwaters stored in the Rogaška Slatina fractured aquifer system were performed in the periods 1978–1985 and 2007–2011 aiming…”
Get full text

Scale-fragment formation impairing geothermal energy production: interacting H2S corrosion and CaCO3 crystal growth by Boch, Ronny, Leis, Albrecht, Haslinger, Edith, Goldbrunner, Johann E., Mittermayr, Florian, Fröschl, Heinz, Hippler, Dorothee, Dietzel, Martin

“…Background Mineral precipitates (scaling) from deep saline thermal waters often constitute a major problem during geothermal energy production. The occurrence…”
Get full text

Nucleation and crystallization of otavite, witherite, calcite, strontianite, hydrozincite, and hydrocerussite by CO2 membrane diffusion technique by Bucca, Maurizio, Dietzel, Martin, Tang, Jianwu, Leis, Albrecht, Köhler, Stephan Jürgen

Get full text

Isotopic composition of precipitation at the station Ljubljana (Reaktor), Slovenia – period 2007–2010 by Polona Vreča, Ines Krajcar Bronić, Albrecht Leis, Miha Demšar

“…The stable isotopic composition of hydrogen and oxygen (δ2H and δ18O) and the tritium activity (A) were monitored in monthly collected precipitation at…”
Get full text

Isotopic composition of precipitation at the station Portorož, Slovenia – period 2007–2010 by Polona Vreča, Ines Krajcar Bronić, Albrecht Leis

“…The stable isotopic composition of oxygen and hydrogen (δ18O and δ2H) and the tritium activity (A) were monitored in precipitation at synoptic station Portorož…”
Get full text

Concentration and stable carbon isotopic composition of CO2 in cave air of Postojnska jama, Slovenia by Mandic, Magda, Mihevc, Andrej, Leis, Albrecht, Bronic, Ines Krajcar

“…Partial pressure of CO, (pC02) and its isotopic composition (513CairC02) were measured in Postojnska jama, Slovenia, at 10 locations inside the cave and…”
Get full text

Risk assesment of an urban aquifer based on environmental tracers by Branka Trček, Primož Auersperger, Albrecht Leis, Jürgen Sültenfuss

“…Groundwater from a Pleistocene sandy-gravel aquifer is a drinking water resource for the Union brewery, located nearthe centre of Ljubljana (Slovenia). A large…”
Get full text

Oxygen and clumped isotope fractionation during the formation of Mg calcite via an amorphous precursor by Dietzel, Martin, Purgstaller, Bettina, Kluge, Tobias, Leis, Albrecht, Mavromatis, Vasileios

“…The oxygen and clumped isotope signatures of Mg calcites are routinely used as environmental proxies in a broad range of surroundings, where Mg calcite forms…”
Get full text

Green Inhibitor Performance against CaCO3 Scaling: Rate-Modeling Aided Test Procedure by Wedenig, Michael, Boch, Ronny, Leis, Albrecht, Wagner, Hanns, Dietzel, Martin

“…Green inhibitors (GI) are eco-friendly organic molecules capable of inhibiting the nucleation and precipitation of solids, like CaCO3 minerals. Although…”
Get full text

Green inhibitors reduce unwanted calcium carbonate precipitation: Implications for technical settings by Eichinger, Stefanie, Boch, Ronny, Leis, Albrecht, Baldermann, Andre, Domberger, Gunnar, Schwab, Christian, Dietzel, Martin

“…•Very small amounts of the green inhibitor PASP are sufficient to reduce and modify carbonate scale deposit formation.•PASP induces formation of metastable…”
Get full text

Environmental isotope and hydrochemical characteristics of groundwater in central portion of Mekelle sedimentary outlier, northern Ethiopia by Alemayehu, Tewodros, Leis, Albrecht, Dietzel, Martin

“…This study investigated the source and hydrogeochemical processes responsible for variation in groundwater chemical characteristics in multi-layered aquifers…”
Get full text

Green Inhibitor Performance against CaCO 3 Scaling: Rate-Modeling Aided Test Procedure by Wedenig, Michael, Boch, Ronny, Leis, Albrecht, Wagner, Hanns, Dietzel, Martin

Get full text

Geochemistry of coal mine drainage, groundwater, and brines from the Ibbenbüren mine, Germany: A coupled elemental-isotopic approach by Rinder, Thomas, Dietzel, Martin, Stammeier, Jessica A., Leis, Albrecht, Bedoya-González, Diego, Hilberg, Sylke

“…A coupled elemental-isotopic approach is applied to reconstruct the origin and chemical evolution of mine drainage, groundwater, and brines from the…”
Get full text

Mineral deposits affecting geothermal energy production – Insights, analytical approaches and implementation strategies by Boch, Ronny, Kluge, Tobias, Leis, Albrecht, Dietzel, Martin, Szanyi, János

Get full text

Calcium carbonate scaling under alkaline conditions – Case studies and hydrochemical modelling by Rinder, Thomas, Dietzel, Martin, Leis, Albrecht

“…•Mechanisms of scaling in tunnel drainages are deciphered by a multiproxy approach.•CO2 absorption in alkaline solutions may increase or decrease the…”
Get full text

The temporal evolution of the carbon isotope composition of calcite in the presence of cyanobacteria by Grimm, Christian, Mavromatis, Vasileios, Leis, Albrecht, Pokrovsky, Oleg S., Oelkers, Eric H.

“…Quantifying the link between cyanobacterial activity and the carbon isotope signature of precipitated carbonate minerals is crucial for reconstructing the…”
Get full text