How to describe a black hole embedded in an expanding universe is an important topic. Many models about this issue are suggested by assuming that the metric is a conformal transformation of the Schwarzschild metric or of the isotropic black hole metric. In the paper, it is shown that the two metrics are not suitable for describing a black hole embedded in an expanding universe because of the si...

* This work was partially supported by the European Commission, under the project IST -1999-11316 (RFieldbus). Abstract: Broadcast networks that are characterised by having different physical layers (PhL) demand some kind of traffic adaptation between segments, in order to avoid traffic congestion in linking devices. In many LANs, this problem is solved by the actual linking devices, either beh...

Over 200 prosthesis using adhesive resin have been set for three years from 1982 to 1985 in our clinic. The patients were recalled and investigated the prognosis of them. The following results were obtained: 1. Adhesion bridges accounted for more than 80% among them and number of posterior bridges has been increased in every year. 2. Adhesion splints have been mainly used for periodontal splint...

The HIV envelope glycoprotein gp120 contains nine disulphide bridges and is highly glycosylated, carrying on average 24 N-linked glycans. Using a probability calculation, we here demonstrate that there is a co-localization of disulphide bridges and N-linked glycans in HIV-1 gp120, with a predominance of N-linked glycans in close proximity to disulphide bridges, at the C-terminal side of the inv...

Halophilic proteins have greater abundance of acidic over basic and very low bulky hydrophobic residues. Classical electrostatic stabilization was suggested as the key determinant for halophilic adaptation of protein. However, contribution of specific electrostatic interactions (i.e. salt-bridges) to overall stability of halophilic proteins is yet to be understood. To understand this, we use Ad...

The following paper describes the investigation of two old bridges over inland waterways in Germany under a possible ship impact. Both the numbers of ship impacts against bridges in Germany and the structural description of the bridges has been intensively dealt with. The investigation is based on probabilistic calculations to take into consideration the uncertainty of a possible impact and the...

This paper presents a new bridge management system (J-BMS). It is integrated with a concrete bridge rating expert system that can be used to evaluate the serviceability of existing concrete bridges. The proposed J-BMS not only evaluates the performance of bridges, but also offers a rehabilitation strategy based on a combination of maintenance cost minimization and quality maximization. In this ...

In this paper the parametric study is carried out to investigate the effect of number of cells in optimal cost of the non-prismatic reinforced concrete (RC) box girder bridges. The variables are geometry of cross section, tapered length, concrete strength and reinforcement of the box girders and slabs that are obtained using ECBO metaheuristic algorithm. The design is based on AASHTO standard s...

Infrastructures are a key factor for economy. Among them, transportation infrastructures are vital for human life and economy. And within the transportation networks, bridges are key elements for connecting people anddelivering goods. For this reason, bridges have been built sincemany centuries ago, in some way, and the advances (and sometimes geographical expansions!!) of ancient cultures all ...