scholarly journals Soils at the Altitudinal and Northern Treeline: European Alps, Northern Europe, Rocky Mountains - A Review

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Holtmeier Friedrich-Karl ◽  
Broll Gabriele
Keyword(s):  
Rocky Mountains ◽  
Northern Europe ◽  
European Alps

scholarly journals NOTES ON COLEOPTERA—NO. 6

1890 ◽  
Vol 22 (11) ◽  
pp. 237-242
Author(s):  
John Hamilton
Keyword(s):  
New Mexico ◽  
North America ◽  
Rocky Mountains ◽  
Northern Europe ◽  
Hudson Bay ◽  
Typical Form

Corymbites nigricornis Panz. (metallicus Payl. nitidulus Lec.)This species is widely distributed in North America, from Hudson Bay to Massachusetts, and westwardly to the Rocky Mountains through which it extends to New Mexico. It also inhabits Siberia, Central and Northern Europe. The typical form (European) is described as meatallic black, with the two basal joints of the antennæ and the feet rufous.

Fragmentation energy in rock avalanches

2006 ◽  
Vol 43 (8) ◽  
pp. 830-851 ◽  
Author(s):  
Pascal Locat ◽  
Réjean Couture ◽  
Serge Leroueil ◽  
Jacques Locat ◽  
Michel Jaboyedoff
Keyword(s):  
Rocky Mountains ◽  
Point Load ◽  
Diameter Ratio ◽  
European Alps ◽  
Canadian Rocky Mountains ◽  
Point Load Strength ◽  
Fragmentation Energy ◽  
Rock Avalanches ◽  
Intact Rock Mass ◽  
The Mean

Fragmentation is one of the mechanisms involved in rock avalanches. Quantifying the associated energy during a rock avalanche can help to assess the influence of fragmentation on post-failure mass movements. In this paper, in situ block size distributions of the intact rock mass and the debris deposits are presented and analyzed for nine rock avalanches, five in the Canadian Rocky Mountains and four in the European Alps. Degrees of fragmentation are estimated from these data. Two methods are examined to assess fragmentation energy, one based on the comminution theory, and one on the blasting energy used in the mining industry. The results show that, for the studied rock avalanches, there is a relationship between the reduction in diameter ratio, Rr = D50/d50 (where D50 and d50 are the mean diameter of the intact rock mass and the mean diameter of the debris, respectively), and the potential energy per unit volume normalized with respect to the point load strength of rock (γHG/σc), where γ is the unit weight of the material, HG is the vertical distance between the centres of gravity of the mass at the start and end positions, and σc is the point load strength). For the cases studied, fragmentation energy calculations average 20% of the potential energy. An empirical relationship between Rr and γHG/σc has been established and is used in the definition of a disintegration index (ID). This index seems to reflect the physics of the disintegration process, since it accounts for the fact that the reduction in diameter ratio is a function of the dissipated energy and the strength of the rock. These factors have long been known to affect fragmentation but have never been presented in a coherent manner for rock avalanches.Key words: rock avalanches, disintegration, fragmentation energy, Canadian Rocky Mountains, European Alps.

Preclinical operative dentistry courses in northern Europe and Scandinavia

1993 ◽  
Vol 57 (4) ◽  
pp. 312-317
Author(s):  
NH Wilson ◽  
A Richards ◽  
J Laverock ◽  
MS Purkiss
Keyword(s):  
Northern Europe ◽  
Operative Dentistry

PCB Check-Up In Northern Europe

2010 ◽  
pp. 100080510134803
Author(s):  
Valerie Brown
Keyword(s):  
Northern Europe

Mitbringsel aus den Ferien

Praxis ◽  
2005 ◽  
Vol 94 (47) ◽  
pp. 1869-1870
Author(s):  
Balestra ◽  
Nüesch
Keyword(s):  
Rocky Mountains ◽  
Spotted Fever ◽  
Rocky Mountain ◽  
Rickettsia Conorii ◽  
Rocky Mountain Spotted Fever ◽  
Klinische Diagnose ◽  
Rickettsia Rickettsii

Eine 37-jährige Patientin stellt sich nach der Rückkehr von einer Rundreise durch Nordamerika mit einem Status febrilis seit zehn Tagen und einem makulösem extremitätenbetontem Exanthem seit einem Tag vor. Bei suggestiver Klinik und Besuch der Rocky Mountains wird ein Rocky Mountain spotted fever diagnostiziert. Die Serologie für Rickettsia conorii, die mit Rickettsia rickettsii kreuzreagiert, war positiv und bestätigte die klinische Diagnose. Allerdings konnte der beweisende vierfache Titeranstieg, möglicherweise wegen spät abgenommener ersten Serologie, nicht nachgewiesen werden. Nach zweiwöchiger antibiotischer Therapie mit Doxycycline waren Status febrilis und Exanthem regredient.

Vulnerability of Norway spruce to climate change in mountain forests of the European Alps

2014 ◽  
Vol 60 (2) ◽  
pp. 119-132 ◽  
Author(s):  
C Hartl-Meier ◽  
C Zang ◽  
C Dittmar ◽  
J Esper ◽  
A Göttlein ◽  
...  
Keyword(s):  
Climate Change ◽  
Norway Spruce ◽  
European Alps ◽  
Mountain Forests
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