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Qualitative simulation of bathymetric changes due to reservoir sedimentation : A Japanese case study

Sediment-dynamics modeling is a useful tool for estimating a dam's lifespan and its cost-benefit analysis. Collecting real data for sediment-dynamics analysis from conventional field survey methods is both tedious and expensive. Therefore, for most rivers, the historical record of data is either missing or not very detailed. Available data and existing tools have much potential and may be used for

On selection of threshold values in alarm-systems for drinking water monitoring

Med hjälp av ett automatiserat mätsystem för partikelhalter i vatten har vattenkvaliteten vid Borensbergs vattenverk i Motala kommun undersökts under ett års tid med avseende på mikroskopiska partiklar i dricksvatten och råvatten. Antalet mikroskopiska partiklar registrerades som absoluta värden i realtid. I denna artikel diskuteras hur larmgränser skall definieras i praktiken för partikelhalter oDuring a one year long research project at Borensberg Waterworks, Motala, Sweden, water quality with respect to microscopic particle counts both in raw water and drinking water have been monitored by an online water quality monitoring system. Microscopic particle counts were documented with absolute values in real-time. In this paper, a discussion is introduced on how to analyze large data sets fr

Design principles of small multi storey wooden houses

Many multifamily houses are produced by small or medium size enterprises (SME's). These developers produce a substantial number of residential units per year. They have normally limited resources and need to have easy access to cost - effective structural solutions. Typical buildings comprise two storeys and four to eight flats. Due to costs and production efficiency these buildings are produced i

Acoustically robust light weight constructions require controlled building process

Acoustically robust light weight constructions in multifamily houses require that the building processes are taken into account, i.e. it is necessary to describe in detail how to erect the house on site in order to fulfill the final result. Performance of details necessary for stability reasons, connections in joints, fixing of final strips etc have to be described clearly in order to achieve the

Field measurements of the Mobility and Vibrations induced by human walking on a wooden floor

Lightweight constructions of timber material are cost effective and demands relatively short production duration. One of the main drawbacks of lightweight structures, however, is related to the sound transmission. More and more complains arise against this type of structures, related to the propagation of low frequency vibrations induced by human activities. Most problems are caused by human walki

Horn loudspeakers nonlinearity comparison and linearization using volterra series

The characterization of a weakly nonlinear electroacoustic device with usual methods of measurement (THD, intermodulation) does not illustrate the nonlinearities themselves, but only some of their effects. Device linearization can be achieved by applying the inverse nonlinearity upstream of the device, under the condition that the nonlinearity law is known in detail. This paper presents nonlineari

Mental health among young adults in prison : the importance of childhood-onset conduct disorder

BACKGROUND: The psychiatric health burden of prisoners is substantial. However, there is a lack of high-quality studies of psychiatric disorders among young adults with a high risk of reoffending.AIMS: To investigate the lifetime prevalence of psychiatric disorders and use of mental health services among young male violent offenders and the impact of childhood-onset conduct disorder (COCD).METHOD:

Measurement of vertebral rotation in adolescent idiopathic scoliosis with low-dose CT in prone position - method description and reliability analysis

Background: To our knowledge there is no report in the literature on measurements of vertebral rotation with low-dose computed tomography (CT) in prone position.Aims: To describe and test the reliability of this new method, compare it with other methods in use and evaluate the influence of body position on the degree of vertebral rotation measured by different radiological methods.Study design: Re

Arthrodesis of the trapeziometacarpal joint

Because degenerative changes in the trapeziometacarpal joint are a common cause of pain and weakness of the thumb, particularly in postmenopausal women, we have evaluated the functional and radiological results of arthrodesis in 43 patients. Arthrodesis is a safe and effective way of treating isolated painful arthritis in the trapeziometacarpal joint; solid fusion occurred in 39 cases, and four pa

Tracking of physical activity with accelerometers over a 2-year time period

Background: Limited data exist of tracking and changes in accelerometer-measured physical activity in children. Methods: Physical activity was assessed by accelerometers for 4 days in 167 children (boys, n = 90; girls n = 77) age 9.8 ± 0.6 years. Follow-up measurement was made 2.0 ± 0.1 yrs later (range 1.9-2.1 yrs). General physical activity (GPA) was defined as mean count/minute. Minutes of inac

Identification of circulating small non-coding RNAs in relation to male subfertility and reproductive hormones

Male subfertility is often associated with sub-optimal health status and traditional semen and hormone analysis reveal only limited information about the reduced fertility potential. Circulating small non-coding RNAs (sncRNAs) are paracrine and endocrine messengers, with prognostic potential. Here, we utilised small RNA-Seq to identify novel cell-free circulating sncRNAs that could act as potentia

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Testicular microlithiasis (TM) has been reported in up to 46% of men with testicular cancer. This has given rise to the suspicion that TM is a premalignant condition. In studies of healthy men there is, however, no association between TM and development of cancer. Nonetheless, patients with TM and contralateral testicular cancer, testicular atrophy, inhomogeneous parenchyma, infertility or a histo