The Contrast, and: To the Pine Tree, and: Lines Written at Castle Island, Lake Superior, and: By an Ojibwa Female Pen, and: On the Doric Rock, Lake Superior

Ecotone ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 140-147
Author(s):  
Jane Johnston Schoolcraft
Keyword(s):  
2021 ◽  
Vol 13 (2) ◽  
pp. 372-390
Author(s):  
Kent Linthicum ◽  
Mikaela Relford ◽  
Julia C. Johnson

Abstract Native American authors in the first half of the nineteenth century—the dawn of the Anthropocene in some accounts—were witness to the rapid expansion of settler-colonialism powered by new ideologies of energy and fueled by fossil capitalism. These authors, though, resisted extractive metaphors for energy and fuel, offering more organic and intimate visions of energy instead. Using energy humanities theories developed by Warren Cariou (Métis) and Bob Johnson, among others, this article will analyze Mary Jemison’s (Seneca) autobiography; Jane Johnston Schoolcraft’s (Ojibwe) poem, “On the Doric Rock, Lake Superior”; and John Rollin Ridge’s (Cherokee) novel, The Life and Adventures of Joaquín Murieta. These works show how Native American authors defined energy as cyclical and intimate in contrast to the growing settler society’s vision of linear, unending extraction. This article argues that nineteenth-century Native American Anglophone literatures expand the scope of the energy humanities by describing energy intimacy while also extending the histories of Indigenous resistance to settler energy imaginaries. Nineteenth-century Native American literatures can make important contributions to the scope of the energy humanities and need to be integrated into the field to grasp the full scale of current environmental crises.


Author(s):  
Richard L. Leino ◽  
Jon G. Anderson ◽  
J. Howard McCormick

Groups of 12 fathead minnows were exposed for 129 days to Lake Superior water acidified (pH 5.0, 5.5, 6.0 or 6.5) with reagent grade H2SO4 by means of a multichannel toxicant system for flow-through bioassays. Untreated water (pH 7.5) had the following properties: hardness 45.3 ± 0.3 (95% confidence interval) mg/1 as CaCO3; alkalinity 42.6 ± 0.2 mg/1; Cl- 0.03 meq/1; Na+ 0.05 meq/1; K+ 0.01 meq/1; Ca2+ 0.68 meq/1; Mg2+ 0.26 meq/1; dissolved O2 5.8 ± 0.3 mg/1; free CO2 3.2 ± 0.4 mg/1; T= 24.3 ± 0.1°C. The 1st, 2nd and 3rd gills were subsequently processed for LM (methacrylate), TEM and SEM respectively.Three changes involving chloride cells were correlated with increasing acidity: 1) the appearance of apical pits (figs. 2,5 as compared to figs. 1, 3,4) in chloride cells (about 22% of the chloride cells had pits at pH 5.0); 2) increases in their numbers and 3) increases in the % of these cells in the epithelium of the secondary lamellae.


Author(s):  
O. Mudroch ◽  
J. R. Kramer

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.


2009 ◽  
Author(s):  
Louis Agassiz
Keyword(s):  

2020 ◽  
pp. 57-65
Author(s):  
Eusébio Conceiçã ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Jorge Raposo ◽  
Domingos Xavier Viegas ◽  
...  

This paper refers to a numerical study of the hypo-thermal behaviour of a pine tree in a forest fire environment. The pine tree thermal response numerical model is based on energy balance integral equations for the tree elements and mass balance integral equation for the water in the tree. The simulation performed considers the heat conduction through the tree elements, heat exchanges by convection between the external tree surfaces and the environment, heat exchanges by radiation between the flame and the external tree surfaces and water heat loss by evaporation from the tree to the environment. The virtual three-dimensional tree model has a height of 7.5 m and is constituted by 8863 cylindrical elements representative of its trunks, branches and leaves. The fire front has 10 m long and a 2 m high. The study was conducted taking into account that the pine tree is located 5, 10 or 15 m from the fire front. For these three analyzed distances, the numerical results obtained regarding to the distribution of the view factors, mean radiant temperature and surface temperatures of the pine tree are presented. As main conclusion, it can be stated that the values of the view factor, MRT and surface temperatures of the pine tree decrease with increasing distance from the pine tree in front of fire.


Author(s):  
Michael J. Hansen ◽  
Mark P. Ebener ◽  
Richard G. Schorfhaar ◽  
Stephen T. Schram ◽  
Donald R. Schreiner ◽  
...  
Keyword(s):  

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