It has been well-established that single layer MX2 (M = Mo, W and X = S, Se) are direct gap semiconductors with band edges coinciding at the K point in contrast to their indirect gap multilayer counterparts. In few-layer MX2, there are two valleys along the Γ-K line with similar energy. There is little understanding on which of the two valleys forms the conduction band minimum (CBM) in this thi...

We study confluence and the Church-Rosser property in term rewriting and λ-calculus with explicit bounds on term sizes and reduction lengths. Given a system R, we are interested in the lengths of the reductions in the smallest valleys t→∗ s′ ∗← t′ expressed as a function: — for confluence a function vsR(m,n) where the valleys are for peaks t ∗← s→∗ t′ with s of size at most m and the reductions...

In this paper we support the division of the previously monotypic genus Ascaphus into two species based on an analysis of 23 allozyme loci from 34 populations. We use maximum likelihood to estimate the Ascaphus phylogeny from the allozyme data and find strongly supported monophyletic Rocky Mountain and Pacific clades. In a nonhierarchal, model-based cluster analysis of the data, each of the 108...

Abstract To meet the environmental challenges, use of plastic packaging must be drastically reduced. Paper-based solutions may a credible alternative provided that their production cost is One way to improve paper stiffness weight ratio. In this work, simple and low-cost approach proposed, which consists in printing patterned grid starch at surface by using widespread process. With only small q...

abstract: the aim of this study is analysis of drainage basins neotectonic in the north slope of bozqoosh mountains by geomorphological methods. to attain this aim, it used of field observation, areal photographs and five geomorphic indexes in 20 basins of the north slope of bozqoosh mountains. indexes were calculated by topography maps (1: 50000), geological maps (1: 100000) and areal photogr...