The Role of Calcining and Basal Fluidization in the Long Runout of Carbonate Slides: An Example from the Heart Mountain Slide Block, Wyoming and Montana, U.S.A.

2010 ◽  
Vol 118 (6) ◽  
pp. 577-599 ◽  
Author(s):  
Mark H. Anders ◽  
Bruce W. Fouke ◽  
Aubrey L. Zerkle ◽  
Enrico Tavarnelli ◽  
Walter Alvarez ◽  
...  
Keyword(s):  
Long Runout ◽  
Slide Block

Error of installation of a prismatic workpiece in the vise

2021 ◽  
pp. 55-70
Author(s):  
L.V. Ibaeva ◽  
D. I. Gerasimov
Keyword(s):  
Horizontal Plane ◽  
The Self ◽  
Tightening Force ◽  
Geometric Characteristics ◽  
Slide Block ◽  
Dimensional Parameters ◽  
Comparison Of The Results

The article analyzes the reasons why the workpiece is raised above the horizontal plane when it is fixed in the machine vise. The study is related to both the design of the device and the shape of the positioning of the workpiece surfaces. Five cases of the positioning of the side surfaces of the workpiece when fixed in a vise are considered. The role of backlash in the design of the machine vise in the installation error is determined. The values, by which the workpiece can rise after applying the tightening force in the case of errors in the shape of the workpiece and in the case of backlash in the design of the vise, are obtained. The values, by which the workpiece is raised, provided that there are no backlashes in the vise, are found when considering the tolerances for the positioning of surfaces depending on the method of cutting rolled products and the tolerances for the positioning of surfaces depending on the accuracy of rolled products. In addition, the values by which the workpiece is raised, provided that the workpiece does not have errors in the positioning of surfaces, taking into account the dimensional parameters of the slide bar and the guide of the vise with one movable jaw, as well as the dimensional parameters of the slide bar and the guide of the self-centering vise, are identified. The schemes for calculating the angle at which the slide block can turn due to the gapping in the guides and a scheme for calculating the height of the workpiece after fixing are presented. The geometric characteristics of the orientation of the workpiece after the application of the hold-down force are given; then the comparison of the results obtained in the study is carried out. As a result, it is concluded that the errors introduced by the design of the vise are several times less than the errors introduced by the shape of the workpiece. Methods for reducing the resulting installation errors are provided.

scholarly journals The critical role of stratification in submarine channels: Implications for channelization and long runout of flows

2014 ◽  
Vol 119 (4) ◽  
pp. 2620-2641 ◽  
Author(s):  
R. M. Dorrell ◽  
S. E. Darby ◽  
J. Peakall ◽  
E. J. Sumner ◽  
D. R. Parsons ◽  
...  
Keyword(s):  
Critical Role ◽  
Long Runout ◽  
Submarine Channels

scholarly journals The impact of ground-ice thaw on landslide geomorphology and dynamics: two case studies in northern Iceland

Landslides ◽  
2021 ◽  
Author(s):  
Costanza Morino ◽  
Susan J. Conway ◽  
Matthew R. Balme ◽  
Jón Kristinn Helgason ◽  
Þorsteinn Sæmundsson ◽  
...  
Keyword(s):  
Slope Instability ◽  
Permafrost Degradation ◽  
Ground Ice ◽  
Long Runout ◽  
Loose Deposits ◽  
Landslide Event ◽  
Multiple Pulses ◽  
Steep Terrain ◽  
The Impact

AbstractAs consequence of ongoing climate change, permafrost degradation is thought to be increasingly affecting slope stability in periglacial environments. This is of growing concern in Iceland, where in the last decade, permafrost degradation has been identified among the triggering factors of landslides. The role of ground ice in conditioning the morphology and dynamics of landslides involving loose deposits is poorly understood. We show the geomorphological impact of the Móafellshyrna and Árnesfjall landslides that recently occurred in ice-cemented talus deposits in northern Iceland. Using field and aerial remote-sensing measurements of the morphological and morphometric characteristics of the landslides, we assess the influence of thawing ground ice on their propagation style and dynamics. The two mass movements are complex and are similar to rock- and debris-ice avalanches, changing trajectory and exhibiting evidence of transitioning their style of motion from a dry granular mass to a debris flow-like movement via multiple pulses. We infer that the thawing of ground ice together with the entrainment of saturated material provided the extra fluid causing this change in dynamics. The hazardous consequences of permafrost degradation will increasingly affect mountain regions in the future, and ground-ice thaw in steep terrain is a particularly hazardous phenomenon, as it may induce unexpected long-runout failures and can cause slope instability to continue even after the landslide event. Our study expands our knowledge of how landslides develop in unstable ice-cemented deposits and will aid assessment and mitigation of the hazard that they pose in Iceland and other mountainous periglacial areas.

Late-Holocene evolution of a floodplain impounded by the Smrdutá landslide, Carpathian Mountains (Czech Republic)

The Holocene ◽  
2012 ◽  
Vol 23 (2) ◽  
pp. 218-229 ◽  
Author(s):  
Tomáš Pánek ◽  
Veronika Smolková ◽  
Jan Hradecký ◽  
Jan Sedláček ◽  
Valentina Zernitskaya ◽  
...  
Keyword(s):  
Late Holocene ◽  
Mass Movement ◽  
Landslide Dam ◽  
Decisive Role ◽  
High Sensitivity ◽  
Movement Activity ◽  
Long Runout ◽  
Extreme Flood ◽  
Sedimentation Dynamics

Landslides affecting narrow mountainous valleys might significantly determine sedimentation dynamics of floodplains. We present here a detailed study of the sedimentary archive within a landslide-controlled impounded floodplain (Smrdutá site, Czech Flysch Carpathians) using geochronological (14C and 137Cs), sedimentological and pollen evidence. A sedimentary sequence deposited above the landslide dam points to three highly discontinuous and instantaneous depositional events dated to 4.6 and 2.0 cal. ka BP, whereas the last cycle started approximately in the 17–18th centuries and has continued to recent times. Such sedimentary pulses characterized by the duration of several decades to a few centuries originated as a consequence of the blockage and/or reduction of the valley floor width by successive long-runout landslides from a slope formed by tectonically and lithologically anisotropic flysch bedrock. Stages of mass movement activity revealed by the Smrdutá landslide correlate well with major humid late-Holocene oscillations suggesting its high sensitivity to century-scale climatic deteriorations. The character of lithological units forming individual sedimentary pulses, erosional hiatuses and sedimentary traces caused by the July 1997 extreme flood indicate a decisive role of large flood events during accretion and erosion of the floodplain-impounded section.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

The role of affect in feelings of obligation

2020 ◽  
Vol 43 ◽  
Author(s):  
Stefen Beeler-Duden ◽  
Meltem Yucel ◽  
Amrisha Vaish
Keyword(s):  
Positive Emotions ◽  
The Creation ◽  
Sense Of Obligation

Abstract Tomasello offers a compelling account of the emergence of humans’ sense of obligation. We suggest that more needs to be said about the role of affect in the creation of obligations. We also argue that positive emotions such as gratitude evolved to encourage individuals to fulfill cooperative obligations without the negative quality that Tomasello proposes is inherent in obligations.

Sign in / Sign up

Export Citation Format

Share Document