A composition of n ∈ N is an ordered collection of one or more positive integers whose sum is n. The number of summands is called the number of parts of the composition. A palindromic composition of n is a composition of n in which the summands are the same in the given or in reverse order. In this paper we study the generating function for the number of compositions (respectively, palindromic ...

conclusions ramadan fasting resulted in weight loss even it was only a temporary effect, as the weight was quickly regained within one month after fasting. the catabolism catabolic state, which is related to protein loss, was not triggered during ramadan fasting. further research is needed to evaluate the effects of weight loss during ramadan fasting in healthy individuals. results by the 28th ...

introduction the aqkand cu occurrence, 48 km north of zanjan, is located in the tarom subzone of the western alborz-azerbaijan structural zone. apart from small scale geological maps of the area, i.e., 1:250,000 geological maps of bandar-e-anzali (davies, 1977) and 1:100,000 geological maps of hashtjin (faridi and anvari, 2000) and a number of unpublished perlite exploration reports, prior to t...

It has been nearly 15 years since the term ‘large igneous province’ was introduced by Mike Coffin and Olaf Eldholm (1991, 1994). An umbrella term to include continental flood basalt provinces, oceanic plateaus, volcanic rifted margins and aseismic ridges, it rapidly entered common parlance even though it was, and remains, loosely defined. The key aspect of large igneous provinces (LIPs) is that...

The geometry of mesoscopic single and multiple layer folds in rhyolitic obsidian ̄ows is investigated. Folds are composed of obsidian embedded in a matrix of pumice. Folds form by buckling processes as indicated by discontinuous deformation between obsidian and pumice layers and by the geometries of wavetrains. Buckling occurs through a continuum of styles controlled largely by the thickness ra...

We report the first experimental study of the diffusion of H2O in dacitic melts. Dehydration experiments were conducted at 551–637 8C and 1–1450 bars for samples with ~0.8 to ~2.5 wt.% total dissolved H2O. The H2O diffusivity is proportional to total H2O contents at V0.8 wt.%, but increases exponentially with total H2O at higher H2O contents. The diffusivity of the total dissolved H2O (in Am /s...

[1] Models of the early stages of basaltic eruptions beneath temperate glaciers are presented that consider the evolving sizes of volcanic edifices emplaced within subglacial cavities. The cavity size reflects the competing effects of enlargement by melting and closure by downward ductile deformation of the ice roof, which occurs when the cavity pressure is less than glaciostatic due to meltwat...

The concentration of pre-eruptive volatiles is a key parameter that controls the eruptive behaviour volcanoes. Among these, water most abundant volatile and has major influence on magma chamber dynamics primary role in driving eruptions. While accurately quantifying dissolved magmas crucial step understanding styles, we still encounter problems this regard. One main challenges discriminating pr...