Results 21 to 30 of about 241,189 (213)

Living Lithic and Sublithic Bacterial Communities in Namibian Drylands

Microorganisms, 2021
Dryland xeric conditions exert a deterministic effect on microbial communities, forcing life into refuge niches. Deposited rocks can form a lithic niche for microorganisms in desert regions.
Steffi Genderjahn, Simon Lewin, Fabian Horn, Anja M. Schleicher, Kai Mangelsdorf, Dirk Wagner   +5 more
doaj   +1 more source

Physical and chemical weathering rates and CO2 consumption in a tropical lateritic environment: the upper Niger basin [PDF]

, 1998
The chemical composition of Niger river water measured bimonthly at Bamako Mali. during the period 1990–1992 provides an estimate of present weathering rates in the upper Niger basin.
Boeglin, Jean-Loup, Probst, Jean-Luc
core   +2 more sources

Methodology to Evaluate the State of Conservation of Historical Plasterwork and Its Polychrome to Promote Its Conservation

Applied Sciences, 2022
This work presents a methodology for the assessment of ancient plasterworks based on traditional inspection techniques, such as organoleptic tests and chemical characterization, and also on digital tools, such as photogrammetric surveys, thermography ...
Marta Torres-González, Francisco Javier Alejandre, Juan Manuel Alducin-Ochoa, Ana Isabel Calero-Castillo, Francisco Javier Blasco-López, Ana Carrasco-Huertas, Vicente Flores-Alés   +6 more
doaj   +1 more source

Enhanced chemical weathering of rocks during the last glacial maximum: a sink for atmospheric CO2? [PDF]

, 1999
It has been proposed that increased rates of chemical weathering and the related drawdown of atmospheric CO2 on the continents may have at least partly contributed to the low CO2 concentrations during the last glacial maximum LGM..
Amiotte Suchet, Philippe, Ludwig, Wolfgang, Probst, Jean-Luc   +2 more
core   +2 more sources

Weathering of the Ethiopian volcanic province: a new weathering index to characterize and compare soils [PDF]

, 2015
© Walter de Gruyter Berlin/Boston 2015.Soil formation occurs through numerous physical and chemical weathering processes acting to alter the parent rock on the Earths surface.
Baxter, PJ, Berhanu, T, Cuadros, J, Davey, G, Le Blond, JS, Molla, YB, Umer, M   +6 more
core   +1 more source

The Quality of Scutellaria baicalensis Georgi Is Effectively Affected by Lithology and Soil’s Rare Earth Elements (REEs) Concentration

Applied Sciences, 2023
The top-geoherb “Rehe Scutellaria baicalensis” was naturally distributed on Yanshan Mountain in Chengde city, Hebei Province, China. Exploring the influences of parent materials on the quality of the top-geoherbs in terms of micronutrient elements is of ...
Zijian Sun, Wei Shen, Weixuan Fang, Huiqiong Zhang, Ziran Chen, Lianghui Xiong, Tianhao An   +6 more
doaj   +1 more source

Topographic and Climatic Control on Chemical Weathering of Mountainous Riverine Sediments of Hainan Island, South China Sea

Frontiers in Earth Science, 2022
Hainan Island, the largest island in the northwestern South China Sea (SCS), is characterized by many tropical mountainous rivers that flow into the SCS.
Fangjian Xu, Fangjian Xu, Bangqi Hu, Bangqi Hu, Jingtao Zhao, Xiting Liu, Ruyong Cui, Xue Ding, Xue Ding, Guifeng Wang, Jianping Huang   +10 more
doaj   +1 more source

Dolerite Fines Used as a Calcium Source for Microbially Induced Calcite Precipitation Reduce the Environmental Carbon Cost in Sandy Soil

Frontiers in Microbiology, 2020
Microbial-Induced Calcite Precipitation (MICP) stimulates soil microbiota to induce a cementation of the soil matrix. Urea, calcium and simple carbon nutrients are supplied to produce carbonates via urea hydrolysis and induce the precipitation of the ...
Carla C. Casas, Alexander Graf, Nicolas Brüggemann, Carl J. Schaschke, M. Ehsan Jorat   +4 more
doaj   +1 more source

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Blum, C. L. Smith, D. J. Brown, M. E. Hodson, M. Mackenzie, M. R. Lee, Smith, Velbel, Zhu   +8 more
core   +2 more sources

Spatio-temporal dynamics and drivers of drying conditions in the HRB: Unraveling the role of precipitation intensity and total precipitation in drying risk

Journal of Hydrology: Regional Studies
Study region: The Hangbu River Basin (HRB), located in eastern China, is the largest sub-basin of the Chaohu Lake Basin. Study focus: In recent decades, the HRB has experienced increased drying and spatial heterogeneity in its hydrological conditions ...
Yang Cao, Xin Wang, Congsheng Fu, Xianyong Meng, Jiejie Lyu, Jie Zhang, Hui Liu, Huijun Zheng, Hongliang Zhang, Miaomiao Zhang   +9 more
doaj   +1 more source