"A Very Large Extent of Virgin Land": Nicholas Biddle, Cotton, and the Expansion of Slavery, 1823–1841

2021 ◽  
Vol 145 (1) ◽  
pp. 33-65
Author(s):  
Stephen W. Campbell
Keyword(s):  
Virgin Land

scholarly journals Restoring steppe landscapes: patterns, drivers and implications in Russia’s steppes

2020 ◽  
Author(s):  
Robert Pazur ◽  
Alexander V. Prishchepov ◽  
Ksenya Myachina ◽  
Peter H. Verburg ◽  
Sergey Levykin ◽  
...  
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Landsat Imagery ◽  
Regression Tree ◽  
Agricultural Land Use ◽  
Virgin Land ◽  
Human Footprint ◽  
Steppe Belt ◽  
Tree Models ◽  
Southern Russia

Abstract Context Agricultural land abandonment across the steppe belt of Eurasia has provided an opportunity for the restoration of steppe landscapes in recent decades. However, global food demands are about to revert this trajectory and put restored steppe landscapes at risk. Objectives We analysed steppe development in southern Russia in the last 40 years, assessed its spatial patterns and drivers of change for several periods. Methods Using Landsat imagery, we mapped the permanent steppe and steppe restoration from 1990 to 2018. Based on regression tree models, we evaluate and explain its dynamics. Results were compared with district-level trends in land-use intensities of cropland. Results We found 70% of the steppe in 2018 represented permanent steppe and 30% of former cropland dominantly abandoned in the postsocialism (1990–2000). The permanent steppe and steppe restored in the postsocialism (1990–2000) were located far from settlements, on rough terrain and in districts of the Virgin Land Campaign (1954–1963). In recent decades, the patterns of steppe restoration (2000–2018) were mostly determined by unfavourable agroclimatic conditions and distance from grain storage facilities. The restoration pattern reflects regional differences in land-use intensities, e.g., isolated steppe patches mostly appeared in areas of intensive agricultural land-use. Conclusions Steppe restoration has appeared in areas marginal for agricultural production, with poor natural conditions and little human footprint. Consequently, the permanent steppe became less fragmented and a more continuous steppe landscape resulted. The remaining isolated steppe patches require attention in restoration programs as they are mostly located in areas of intensive agricultural land-use.

Chestnut Grove: An Early 19th-Century Lime Burning Industry in the Connecticut Western Reserve

1993 ◽  
Vol 14 (1) ◽  
pp. 71-85 ◽  
Author(s):  
Ronald F. Kingsley
Keyword(s):  
Natural Resources ◽  
Lake Erie ◽  
Consumer Market ◽  
Early 19Th Century ◽  
Wood Supply ◽  
Virgin Land ◽  
Ohio Country ◽  
American Consumer ◽  
Bay Islands ◽  
Western Reserve

Information is limited regarding the development of early industries along Lake Erie's northeastern shore of the Connecticut Western Reserve. With the opening of the Ohio Country, farmers and pioneer industrialists found the virgin land abundant with natural resources and ready to be exploited. Evidence derived from a rescue excavation of a stone structure at the outlet of the Cowles Creek together with documents established the presence of a lime burning industry. Early settlers found a plentiful wood supply located on the mainland which provided the necessary fuel for burning limestone mined on Cunningham (Kelleys) Island and permitted the construction of shops for use on Lake Erie. Some of the ships that were constructed locally were used to transport lime for the industry. The Sandusky Bay Islands eventually became a rich source of limestone for the expanding American consumer market.

scholarly journals Mining the Virgin Land of Neurotoxicology: A Novel Paradigm of Neurotoxic Peptides Action on Glycosylated Voltage-Gated Sodium Channels

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Zhirui Liu ◽  
Jie Tao ◽  
Pin Ye ◽  
Yonghua Ji
Keyword(s):  
Sodium Channels ◽  
Network Activity ◽  
Voltage Gated ◽  
Virgin Land ◽  
Neuronal Network Activity ◽  
Voltage Gated Sodium Channels ◽  
Pharmacological Targets ◽  
Underlying Mechanisms ◽  
Posttranslation Modification

Voltage-gated sodium channels (VGSCs) are important membrane protein carrying on the molecular basis for action potentials (AP) in neuronal firings. Even though the structure-function studies were the most pursued spots, the posttranslation modification processes, such as glycosylation, phosphorylation, and alternative splicing associating with channel functions captured less eyesights. The accumulative research suggested an interaction between the sialic acids chains and ion-permeable pores, giving rise to subtle but significant impacts on channel gating. Sodium channel-specific neurotoxic toxins, a family of long-chain polypeptides originated from venomous animals, are found to potentially share the binding sites adjacent to glycosylated region on VGSCs. Thus, an interaction between toxin and glycosylated VGSC might hopefully join the campaign to approach the role of glycosylation in modulating VGSCs-involved neuronal network activity. This paper will cover the state-of-the-art advances of researches on glycosylation-mediated VGSCs function and the possible underlying mechanisms of interactions between toxin and glycosylated VGSCs, which may therefore, fulfill the knowledge in identifying the pharmacological targets and therapeutic values of VGSCs.

scholarly journals Piotr Piotrowski Awangarda w cieniu Jałty. Sztuka w Europie środkowo-wschodniej w latach 1945–89 (Avant-Garde in the Shadow of Yalta. Art in East-Central Europe, 1945–1989) 2005.

Nordlit ◽  
2007 ◽  
Vol 11 (1) ◽  
pp. 293
Author(s):  
Piotr Bernatowicz
Keyword(s):  
Soviet Union ◽  
Central Europe ◽  
Research Field ◽  
East Central Europe ◽  
East Central ◽  
Avant Garde ◽  
Virgin Land ◽  
The Soviet Union ◽  
Polish Art ◽  
East Central European

Mieczysław Porębski, a distinguished Polish art historian of the 20th century, once expressed the demand for Polish art history to be researched simultaneously with foreign studies - as parallel fields. "We entered the research field of the old masters' art as partners in, so to say, a ‘furnished household', whereas in the field of contemporary art we are co-explorers, exploring a ‘virgin land'", as Porębski put it. The book by professor Piotr Piotrowski Awangarda w cieniu Jałty. Sztuka w Europie środkowo-wschodniej w latach 1945-89 (The Avant-Garde in the Shadow of Yalta. The Art in East-Central Europe, 1945-1989) fully accomplishes this demanding postulate which nowadays seems to be rather rarely remembered by Polish art historians. The explored area, the East-Central European countries, which emerged, as a result of the Yalta Conference, between the iron curtain and the border of The Soviet Union (including former Yugoslavia) appears at least as an ‘old maiden' land, where scientific penetration still seems to be necessary.

scholarly journals Bernd Herzogenrath - From Virgin Land to Disney World

E-rea ◽  
2005 ◽  
Author(s):  
Yves CARLET
Keyword(s):  
Virgin Land ◽  
Disney World
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