Results 81 to 90 of about 37,350 (215)
Oil and Product Price Dynamics in International Petroleum Markets [PDF]
In this paper we investigate crude oil and products price dynamics. We present a comparison among ten price series of crude oils and fourteen price series of petroleum products, considering four distinct market areas (Mediterranean, North Western Europe,
Alessandro Lanza +2 more
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Seed fossil record of Solanaceae revisited
TAXON, Volume 75, Issue 1, Febuary 2026.Abstract The fossil record for Solanaceae has a complex taxonomic history, with many species originally described in the family being subsequently shown to belong in other plant families. In this work, we present an in‐depth analysis of the nightshade seed fossil record, which corresponds to the largest amount of fossil material for the family.
Rocío Deanna +14 more
wiley +1 more source
Barter in Russia: Liquidity Shortage versus Lack of Restructuring [PDF]
, 1999 The rapid growth of barter is one of the most surprising phenomena in Russia: As a percentage of industrial sales it steadily increased from 5% in 1992 to nearly 55% in 1998.
Brana, Sophie, Maurel, Mathilde
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Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald +17 more
wiley +1 more source
Biological Flora of Britain and Ireland: Geranium sylvaticum*
Journal of Ecology, Volume 114, Issue 2, February 2026.Geranium sylvaticum is a perennial forb of upland grasslands, woodlands and riverbanks in northern Britain, with scattered native occurrences also in Wales, central England and Northern Ireland. It has an extensive native range in Europe and Asia. The species is gynodioecious, with individual plants typically female or hermaphrodite.
Markus Wagner +6 more
wiley +1 more source
Did Iraq Cheat the United Nations? Underpricing, Bribes, and the Oil for Food Program [PDF]
From 1997 through early 2003, the United Nations Oil for Food Program allowed Iraq to export oil in exchange for humanitarian supplies. We measure the extent to which this program was corrupted by Iraq's attempts to deliberately set the price of its oil ...
Chang-Tai Hsieh, Enrico Moretti
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Spartan Daily, March 15, 1993 [PDF]
, 1993 Volume 100, Issue 31https://scholarworks.sjsu.edu/spartandaily/8389/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core +3 more sources
Encapsulating ecosystem engineers: alginate beads of biocrusts for restoration efforts
Restoration Ecology, Volume 34, Issue 2, February 2026.Abstract Introduction Biocrusts are pioneer ecosystem engineers that modify the soil surface by aggregating particles, fixing carbon and nitrogen, and retaining moisture. These functions facilitate the establishment of both cryptogams and vascular plants, making biocrusts increasingly important in ecological restoration.
Mateus F. Oliveira +4 more
wiley +1 more source
Радиационная гигиенаIn cases of intake of higher levels of plutonium, a chelate diethylenetriaminepentaacetic acid is used to enhance the elimination and reduce deposition rate in the organs of major deposit in the form of calcium compound Ca-DTPA (pentacinum). To interpret
A. B. Sokolova +2 more
doaj +1 more source
Petrography of garnet-containing rocks of the Ufalei block, the Southern Urals
Литосфера, 2018 Object of study. The article presents of the petrographic study results of the garnet-containing rocks from the Ufaleiskii complex, located on the border of the Ufaleyskii metamorphic gneiss-amphibolite block with the Main Ural Fault (GUR).
Larisa Ya. Kabanova +3 more
doaj +1 more source