An often unrecognized problem is the geology and glacial history paradigm’s inability to explain topographic map drainage system erosional landform evidence, which means research studies rarely address that type of evidence. The originated in late 19th century with William Morris Davis who sometimes called father geomorphology was one first geologists interpret what were newly available maps. 1...

In this paper, the impacts of the uncertainty of fuel heating value as well as the burner efficiency on performance functions of a turbofan engine are studied. The mean value and variance curves for thrust, thrust specific fuel consumption as well as propulsive, thermal and overall efficiencies are drawn and analyzed, considering the aforementioned uncertainties based on various Mach numbers at...

Abstract The thrust producing performance and efficiency of an SD8020 oscillating foil with a symmetrical saw-tooth angle of attack pitching profile was studied through force and torque measurements, as well as dye flow visualization, in the water tunnel at low Reynolds number of 13,000-16,000. The propulsive efficiency and thrust coefficient of the pitching foil were determined as a function o...

Intracontinental deformation, caused by plate boundary processes, dominates the past and present tectonics of Syria (Figure 1). This deformation has created structures that form hydrocarbon traps in several different areas of the country. Current production from Syria is around 600 000 b/d and the country hosts ongoing exploratory efforts. Deformation within Syria can be conveniently divided in...

from the surface of Mars. The big unanswered question is, What belched? Subsurface Martian cows are highly unlikely. But scientists are seriously considering the possibility of bacteria. " As The Independent picks up the story: " One possibility is that the methane is produced by Martian microbes living deep enough for underground water to be in liquid form. At this depth they could be living o...

The phylogeny of the superfamily Chirostyloidea (Decapoda: Anomura) has been poorly understood owing to limited taxon sampling and discordance between different genes. We present a nine-gene dataset across 15 chirostyloids, including all known yeti crabs (Kiwaidae), to improve the resolution of phylogenetic affinities within and between the different families, and to date key divergences using ...

[1] We argue that key features of thrust earthquake triggering, inhibition, and clustering can be explained by Coulomb stress changes, which we illustrate by a suite of representative models and by detailed examples. Whereas slip on surface-cutting thrust faults drops the stress in most of the adjacent crust, slip on blind thrust faults increases the stress on some nearby zones, particularly ab...

The image logs interpretation from two wells in a fold hosting a west Iranian oil field located in the Dezful Embayment, SW Iran reveal the occurrence of two major systems of natural fractures. In the central part of the fold, the fold-related fractures include two sets of fractures trending N53°E and N34°E. In the eastern and also curved part of the fold, the strike of open fractures varies fr...