A low transmission loss, simple mechanical structure, and broadband waveguide-to-microstrip line transducer has been developed with a polytetrafluoroethylene printed circuit board. This can fully cover the V-band, E-band, and W-band, and the transmission losses are typically 0.68 dB, 0.86 dB, and 0.78 dB, respectively, at the center frequency of each band. The transducer in the W-band was alrea...

The Wiener index, W , is the sum of distances between all pairs of vertices in a graph G. The quadratic line graph is defined as L(L(G)), where L(G) is the line graph of G. A generalized star S is a tree consisting of ∆ ≥ 3 paths with the unique common endvertex. A relation between the Wiener index of S and of its quadratic graph is presented. It is shown that generalized stars having the prope...

A straight line grid embedding of a plane graph G is a drawing of G such that the vertices are drawn at grid points and the edges are drawn as non-intersecting straight line segments. In this paper, we show that, if an internally triangulated plane graph G has no non-empty triangles (a non-empty triangle is a triangle of G containing some vertices in its interior), then G can be embedded on a g...

Postpartum dam performance was studied in a complete diallel design involving five lines of mice. The selection criterion in each line was: large litter size at birth (L+); large 6-wk body weight (W+); an index for large litter size and small 6-wk body weight (L+W-); the complementary index (L-W+) and random (K). Females from the five lines and 20 reciprocal F1 crosses were mated to sires of a ...

The concept of optimal transportation raised recently a growing interest in link with the geometry of metric spaces. In particular the L Wasserstein space W (X) have been used in [6] and [8, 9] to define certain curvature conditions on a metric space X. Many useful properties are inherited from X by W (X) (separability, completeness, geodesicness, some non-negative curvature conditions) while s...

The current study explores the possibility of using a polyethyleneglycol(PEG)-ammonium sulphate aqueous two-phase system (ATPS) as an early step in a process for the purification of a model 6.1 kbp plasmid DNA (pDNA) vector. Neutralised alkaline lysates were fed directly to ATPS. Conditions were selected to direct pDNA towards the salt-rich bottom phase, so that this stream could be subsequentl...

W e present a simple pro cedure w hich allow s us to shif t the positron annihi lati on spectra, e.g., the Doppler broadening spectrum of the annihilation line. T hat is especially required w hen w e w ish to compare di ̃erent spectra obtained w ith a spectrometer w ith the reduction of background. A s an applica tion of the obtained algorithm w e present the studies of positron annihi lati on i...

Aqueous two-phase systems (ATPS) have  emerged as a powerful extraction method for the downstream processing of bio-molecules. The aim of this work was to investigate the possibility of utilizing ATPS for the separation of recombinant Bacillus sphaericus phenylalanine dehydrogenase (PheDH). Polyethylene glycol (PEG) and ammonium sulfate systems were selected for our experi...

In a roughening process, the growth exponent β describes how the roughness w grows with the time t: w ∼ t β. We determine the exponent β of a growth process generated by the spatiotemporal patterns of the one dimensional Domany-Kinzel cellular automaton. The values obtained for β shows a cusp at the frozen/active transition which permits determination of the transition line. The β value at the ...