Manganese (Mn) in acidic paddy soil has large potential emigrating from the and pollute adjacent ecosystems. Single microorganisms modulate biogeochemistry process of Mn via redox reactions, while roles microbial aggregates (e.g. periphytic biofilm) modulating its biogeochemical cycle is poorly constrained. Here we collected a series biofilms fields China to explore how biofilm regulates behavi...

As biometrics progresses from the lab into practical embedded applications, the need for systems that are computationally simple, memory efficient, and accurate becomes a priority. Polynomial classification systems have high potential to fit these requirements. Previous work has shown that polynomial techniques applied to speaker verification lead to accurate systems with simple multiply-add st...

Composite materials, when they are used as structural elements to ensure absorption energy during impacts, can give better results than those of steel. However, their energy absorption capacities can be reduced due to some damage mechanisms, like intralaminar shear, which induce a premature failure. The aim of this study is to investigate the intralaminar shear effects at fibre-matrix interface...

We present the local H II region metallicity near the site of the recently discovered multiply lensed supernova (SN; “SN Refsdal”) at redshift 1.49. “SN Refsdal” is located at the outer spiral arm (∼7 kpc) of the lensed host galaxy, which we previously reported to exhibit a steep negative galactocentric metallicity gradient. Based on our updated near-infrared integral field spectroscopic data, ...

The following remarks were inspired by the discussion in Zassenhaus [l, pp. 51-52] of multiply transitive holomorphs of groups. Theorems 1,2, and 3 below generalize Theorem 6, Theorem 7, and an untheoremed statement, respectively, in [l]. Additional relevant theorems are given in [2]. Let G and H be groups. Let o(G) denote the order of G. Consider the following statements. (A„) o(G)tn+l, o(H)^n...

A new circuit technique, referred to as the twin-transistor technique, for increasing the noise immunity of dynamic logic circuits is presented. This technique makes dynamic logic gates more tolerant to noise appearing at the gate inputs. A multiply-accumulate circuit has been designed and fabricated using a 0.35pm process to veri f y this technique. Experimental results indicate that the twin-...

Usually a Riemannian geometry is considered to be the most general geometry, which could be used as a space-time geometry. In fact, any Riemannian geometry is a result of some deformation of the Euclidean geometry. Class of these Riemannian deformations is restricted by a series of unfounded constraints. Eliminating these constraints, one obtains a more wide class of possible space-time geometr...