Results 1 to 10 of about 225,307 (327)
Science, 2007 Like the formation of animal species, plant speciation is characterized by the evolution of barriers to genetic exchange between previously interbreeding populations. Prezygotic barriers, which impede mating or fertilization between species, typically contribute more to total reproductive isolation in plants than do postzygotic barriers, in which ...
Loren H, Rieseberg, John H, Willis
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The latitudinal speciation gradient in freshwater fishes: Higher speciation across assemblages at higher latitudes in the northern hemisphere. [PDF]
PLoS ONESpeciation rates are a key driver of diversity patterns and are often used to explain the latitudinal diversity gradient (LDG). However, latitudinal variation in speciation rates at both assemblage and species levels remains poorly explored in freshwater
Juliana Herrera-Pérez +6 more
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Direct Calibration Method for LA-HR-ICP-MS Apatite U-Pb Dating
Yankuang ceshi, 2022 BACKGROUND Apatite is a common U-bearing accessory mineral with a U-Pb closure temperature of ~500℃, making U-Pb dating of apatite a potentially valuable thermochronometer.
ZHAO Linghao +5 more
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Environmental Advances, 2022 Impact of soil type, soil-metal(loids) and soil-pH of rice paddies on grain-arsenic (As) and cadmium (Cd) accumulation in Malawian rice was investigated to explore the extent to which Malawi's geographical location, soil types, soil-metal(loids) and soil-
Angstone Thembachako Mlangeni +5 more
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Metal Flux from Dissolution of Iron Oxide Grain Coatings in Sandstones
Geofluids, 2021 Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching of the grain coatings show that the dissolved metals can constitute an ore-forming fluid, as ...
J. Parnell +6 more
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Yankuang ceshi, 2021 BACKGROUND As a highly sensitive analytical technique, ICP-MS has been widely used in the analysis of trace inorganic elements. Combined with chromatographic separation technology, it provides a powerful detection tool for elemental speciation analysis ...
LIU Wei +3 more
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Diversity, 2022 Russia has a number of historical foci of zoonotic anthropogenic diseases. In Central Russia, the Republic of Mordovia is one of such areas, a region being known to have foci of haemorrhagic fever with renal syndrome (HFRS) and tularemia.
Alexey Andreychev +4 more
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Cosmetics, 2022 Metals are present in cosmetics due to deliberate addition by the manufacturers, contamination of raw materials, and/or contamination during their manufacture or storage.
Iria Rujido-Santos +4 more
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Allopatric speciation is more prevalent than parapatric ecological divergence in a recent high-Andean diversification (Linochilus: Asteraceae) [PDF]
PeerJ, 2023 Elucidating how species accumulate in diversity hotspots is an ongoing debate in evolutionary biology. The páramo, in the Northern Andes, has remarkably high indices of plant diversity, endemicity, and diversification rates.
Oscar M. Vargas +2 more
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Molecularly Imprinted Polymers for Dispersive (Micro)Solid Phase Extraction: A Review
Separations, 2021 The review describes the development of batch solid phase extraction procedures based on dispersive (micro)solid phase extraction with molecularly imprinted polymers (MIPs) and magnetic MIPs (MMIPs).
G. D. Thilini Madurangika Jayasinghe +1 more
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