Background: Salmonella can cause serious human gastroenteritis and is frequently isolated from various food samples. The cell culturing, immunoassay, and polymerase chain reactions (PCR) are the current methods to detect such pathogenic agents. However, these methods are time-consuming and labor-intensive, and thus unavailable for rapid-monitoring of Salmonella</em...

Introduction Conclusions References

Aimed at the demand of positioning in complicated environments such as indoor and built-up areas, the method of autonomous navigation positioning and orientation based on an adaptive step length model was proposed in this paper. Using an accelerometer placed on the human waist, stride was recognized and the relationship between the step length, stride factor, and walking speed was established. ...

In this paper we introduce a two-step Certified Reduced Basis (RB) method. In the first step we construct from an expensive finite element “truth” discretization of dimension N an intermediate RB model of dimension N N . In the second step we construct from this intermediate RB model a derived RB (DRB) model of dimension M ≤ N . The construction of the DRB model is effected at cost O(N) and in ...

1.1 Simple derivation of GBLUP Models for genomic selection are abundant. However, most of them rely (yet not all; [1] ) in a hierarchical formulation in which SNP markers (or haplotypes) have additive effect on the trait of interest [2]. We will focus here in models including biallelic SNP markers. Thus, n markers will have n effects, a1 ... an. Although markers have 2 alleles, a single effect...

An exact fractional step or projection method for solving the incompressible Navier–Stokes equations is analyzed. The method is applied to both structured and unstructured staggered mesh schemes. There are no splitting errors associated with the method; it satisfies the incompressibility condition to machine precision and reduces the number of unknowns. The exact projection technique is demonst...

All the liposome preparation protocols, which involve drug encapsulation are multi-step processes, i.e. they consist of one or several steps of preparation and homogenization. The conditions of converting all lipids into vesicles smaller than 200 nm were determined by replacing ultrasonication with mechanical stirring of the buffer and solution of lipids in a low-boiling point organic solvent o...

In the post-genomic era, the ability to synthesize any arbitrary DNA sequence is increasingly in demand. A bottleneck in current gene synthesis technologies is the associated cost, due primarily to the high cost of oligonucleotides synthesis and post-synthesis sequencing. In the present paper, an improved method for low-cost gene synthesis that combines dual asymmetrical PCR and overlap extensi...

On modern large-scale parallel computers, the performance of Krylov subspace iterative methods is limited by global synchronization. This has inspired the development of s-step (or communication-avoiding) Krylov subspace method variants, in which iterations are computed in blocks of s. This reformulation can reduce the number of global synchronizations per iteration by a factor of O(s), and has...

We introduce a new two-step kernel density estimation method, based on the EM algorithm and the generalized kernel density estimator. The accuracy obtained is better in particular, in the case of multimodal or skewed densities.