1,458 research outputs found
Ingrid Ylva och tornet i Bjälbo
No full textThe article discusses the background to the erection of the huge church tower in Bjälbo, Östergötland, Sweden. It also focuses on medieval women as founders of churches. The author maintains that new dendrochronological dating of the tower could mean that founder of this building piece was not one of the male members of the important Bjälbo dynasty, but Ingrid Ylva the mother of Birger Jarl
Propagation pathways and fluid transport of hydrofractures in jointed and layered rocks in geothermal fields
No full textEffects of linking up of discontinuities on fracture growth and groundwater transport
No full textIt is proposed that the growth of fractures is the basic process for generating and maintaining permeability in solid rock (bedrock). Many extension fractures grow as hydrofractures, whereas many shear (and extension) fractures grow through the formation of transverse fractures that connect the adjacent tips of existing fractures. In a boundary-element analysis, the hydrofractures are modeled as being driven open by a fluid overpressure that varies linearly from 10 MPa at the fracture centre to 0 MPa at the fracture tip. The host rock has a uniform Young's. modulus of 10 GPa, a Poisson's ratio of 0.25, and is dissected by vertical joints and horizontal contacts, each of which is modeled as an internal spring of stiffness 6 MPa m(-1). The number of joints and contacts, and their location with respect to the hydrofracture tip are varied in different model runs. The results of the analyses indicate that the tensile stresses generated by overpressured hydrofractures open up joints and contacts out to considerable distances from the fracture tip, so that they tend to link up to form a hydraulic pathway. Using the same Young's modulus, Poisson's ratio, and internal spring constant for joints as in the hydrofracture models, boundary-element models were made to study the interaction stresses that cause neighbouring joints to become interconnected through the growth of linking transverse fractures that, ultimately, may evolve into shear fractures. The models were subjected to tensile stress of 6 MPa acting normal to the joint planes as the only loading. The offset (horizontal distance) and underlap (vertical distance) between the adjacent tips of the joints were varied between model runs. The results show a concentration of tensile and shear stresses in the regions between the neighbouring tips of the joints, but these regions become smaller when the underlap of the joints decreases and changes to overlap. These stress-concentration regions favour the development of transverse (mostly shear) fractures that link up the nearby tips of the joints, so as to form a segmented shear or extension fracture. Analytical results on aperture variation of. a hydrofracture in a homogeneous, isotropic rock are compared with boundary-element results for a hydrofracture dissecting layered rocks. The aperture is larger where the hydrofracture dissects soft (low Young's modulus) layers than where it dissects stiff layers. Aperture variation may encourage subsequent groundwater-flow channeling along a pathway generated by a hydrofracture in layered rocks
Ingrid Winterbach: Novelist (Interview)
No full textWinner of the prestigious Hertzog Prize for Literature for Niggie (2002)Ingrid Winterbach is the author of eight novels, three of which have been translated into English and two into Dutch. The translation of her fourth novel, Karolina Ferreira (1993) as The Elusive Moth (2005), and subsequently, Niggie as To Hell with Cronjé (2007) and Die boek van toeval en toeverlaat (2006) as The Book of Happenstance (2008), have brought this author to the attention of a wider South African readership
7. When They Left
No full textFigure 7.1 The author, Ingrid Griffith (right) with her sister Dawn (left) and brother Oliver (center) in December 1968. Their maternal grandmother had taken them to Skevelair’s Photo Studio in Georgetown, Guyana to pose in the church outfits their parents, who had recently migrated to the United States, had sent for Christmas. © Griffith Family Collection. Courtesy of Ingrid Griffith. CC BY 4.0. It was one of the worst days of my life. I was seven years old, my sist..
270 - Ingrid Jane Slette
No full textGlobal climate change is causing more extreme droughts, as well as subtler chronic changes in precipitation patterns. Both chronic and extreme precipitation change can alter ecosystem structure and function, and these alterations may affect how systems respond to future extreme climatic events. Understanding how legacies of various past precipitation changes may alter the effects of future extreme droughts will be important for predicting ecosystem responses to climate change. We investigated how ecological legacies of experimentally-imposed chronic and extreme precipitation changes altered the impact of an extreme drought on an economically-important grassland ecosystem.Top Scholars for University-Wide Graduate Programs
Funktionelle Analyse von potententiell aktivierenden FGFR3 Mutationen
No full textAuthor Ingrid Hartl, MScAbweichender Titel laut Übersetzung der Verfasserin/des VerfassersDissertation Johannes Kepler Universität Linz 2022Arbeit nach Ablauf der Sperre auf den öffentlichen PCs in den Bibliotheken der JKU+Medizin abrufba
Resensies: Vlam in die sneeu. Die liefdesbriewe van André P. Brink en Ingrid Jonker
No full textBook Title: Vlam in die sneeu. Die liefdesbriewe van André P. Brink en Ingrid JonkerBook Author: Francis Galloway (red.)Kaapstad: Umuzi, 2015. 450 pp. ISBN: 978-1-4152-0881-6. Spesiale uitgawe ISBN: 978-1-4152-0893-9
Arboviral Disease Surveillance, Kansas, 2014
No full text"Report Author: Ingrid C. Garrison"--Page 18.;
"April 21, 2016.";
Includes bibliographical and internet references (page 12)."Arboviruses (arthropod-borne virus) are commonly spread to humans through the bites of infected mosquitoes, ticks, sand flies, or midges. This report focuses on those arboviruses transmitted by mosquitoes. West Nile virus is the leading cause of domestically acquired arboviral disease in the United States and Kansas.
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