The major seminal vesicle secreted proteins in human semen, semenogelin I and semenogelin II, interact non-covalently and via disulphide bridges to instantly form a coagulum upon ejaculation. The coagulum is liquefied after a few minutes due to the action of a prostatic serine protease, prostate-specific antigen (PSA). In contrast to rat semen, which forms an insoluble plug within minutes of expul

In today's competitive society the difference between winning and disappearing might very well be dependent on who is first to release a new product or an update to an existing product to the market. The impact that this situation has on the design analysis department in a company is tremendous. It is a known fact, to everyone working with design analysis, that the demands on analyses from the pro

The mass media and popular science launch the idea that the generation that is retiring now, that is people born in the 1940s, is different from previous generations. The templates for ageing are no longer considered applicable. Pensioners are expected to make completely new and higher demands on life. They are presumed to be healthy, active and well-off. Österlen is often described as a place in

In Japan, used mobile phones are collected through several voluntary projects. In European countries, on the other hand, used mobile phones are handled together with other electronic waste in mandatory EPR systems and municipalities collect most of them as recyclable wastes. In this study, we focused on the role of producers and municipalities. We seek to conduct a comparative analysis of current

The end-to-end assignment of bandwidth to node-pairs (demands) in a communication network can be considered fair if it is distributed according to the max-min fair (MMF) principle. This paper investigates the problem of obtaining an MMF allocation if each demand is required to use exactly one path (i.e., to use unsplittable flows). First it is shown that the problem is NP-hard, both if each demand

In this paper, on-line nitrification and denitrification rate estimation in an alternating wastewater treatment plant is discussed. The nitrification/denitrification rates are estimated on-line using continuous measurements of ammonia and nitrate. From the rate estimates, the plant capacity is derived. This information is useful in various ways: for early warning to prevent severe disturbances suc

The water sorption and desorption characteristics of triphenyl bismuth (TPB)-cements were studied. The radiopacity of TPB was evaluated in order to assess its contrast in comparison to BaSO4-containing cements. It was observed that TPB-cements absorb/ desorp less water than BaSO4 cements (BS) due to the hydrophobic nature of TPB. It was shown that the addition of TPB to acrylic cements results in