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Structure-acoustic analysis; finite element modelling and reduction methods

Popular Abstract in Swedish Avhandlingen behandlar finita element analys av det kopplade problemet bestående av en akustisk fluid innesluten av en flexibel struktur. Det studerade problemområdet kan också innehålla poröst ljudabsorberande material. Denna analys kan appliceras på flera olika ingenjörsproblem, till exempel vid bestäming av ljud nivån i ett fordon på grund av motorns vibrationer ellThis thesis investigates structure-acoustic systems by use of finite element analysis. The systems studied here are limited to those that consist of an enclosed acoustic fluid cavity, which is coupled to a flexible structure and/or a porous sound absorbing material domain. This type of analysis is applicable to a wide range of engineering problems, for example, studying the interior noise in a ve

Identification of a novel protease inhibitor gene that is highly expressed in the prostate.

A novel gene was identified 52 kb upstream of the gene encoding the protease inhibitor elafin (PI3) on human chromosome 20q12-13.1. The transcript of the new gene, denoted huWAP2, was characterized by rapid amplification of cDNA ends and DNA sequencing. The size is 774 bp and it gives rise to a polypeptide of 111 amino acid residues that is homologous to elafin and similar WAP-type protease inhibi

Measurement of inclusive f(1) (1285) and f(1) (1420) production in Z decays with the DELPHI detector

DELPHI results are presented on the inclusive production of two (K(K) over bar π)(0) states in the mass region 1.2-1.6 GeV/c(2) in hadronic Z decays at LEP I. The measured masses (widths) are 1274 +/- 6 MeV/c(2) (29 +/- 12 MeV/c(2)) and 1426 +/- 6 MeV/c(2) (51 +/- 14 MeV/c(2)), respectively. A partial-wave analysis of the (K(K) over bar π)(0) system shows that the first peak is consistent with the

Implementation of functional assessment scales in geriatric practice: A feasibility study

Aim: A study was undertaken to evaluate the feasibility of functional assessment scales regarding completion rate and ability to document functional changes in geriatric rehabilitation patients. Methods: Five functional assessment scales were implemented, and used on admission and discharge as part of standard care. Results: Of 2,812 patients, 90 patients (3.2%) had no scales administered, 2,330 p

Release of endothelin-1 into rat airways following Sephadex-induced inflammation; modulation by enzyme inhibitors and budesonide

The intratracheal (i.t.) instillation of Sephadex beads into rat induced inflammation and a 30-fold increase in the endothelin-1-like immunoreactivity (ET-1-LI) of broncho-alveolar lavage fluid. The levels were highest 24 h after the instillation and had declined significantly after 48 h. At a dose of 1 mg kg-1 i.t., the glucocorticosteroid budesonide almost abolished this response. Phosphoramidon

Cultural and linguistic influence on brain organization for language and possible consequences for dyslexia: a review.

Current neuroimaging and neurophysiologic techniques have substantially increased our possibilities to study processes related to various language functions in the intact human brain. Learning to read and write influences the functional organization of the brain. What is universal and what is specific in the languages of the world are important issues. Most studies on healthy bilinguals indicate t

Studies on radiative lifetimes in the 4d10ns2S and 4d10nd2D sequences of neutral silver

We have performed lifetime measurements in the sequences of2S1/2 and2D3/2 states for the alkali-like 4d10 ns,nd configurations of neutral silver. Selective stepwise excitations from the 4d10 5s2S1/2 ground state were performed using two pulsed dye lasers. Optical transients were recorded and evaluated with regard to the decay time. The lifetime results are compared with those of a theoretical stud

Cold but comfortable? Application of comfort criteria to cold environments

Fanger defined two physiological criteria that are basic requirements for people's perception of thermal neutrality and, eventually, thermal comfort. Mean skin temperature and evaporative heat loss are defined as functions of metabolic rate. The equations are derived from experiments in light clothing at or close to normal indoor climate. Relations between skin temperature and sweating on the one

Effectiveness of a light-weight ice-vest for body cooling in fire figther´s work

The aim of the present study was to examine the effects of wearing a light-weight ice-vest (1 kg, water) on physiological and subjective responses in fire fighter’s work. The experiments were carried out in a climatic chamber, in a container under extreme radiant heat, and during simulated smoke-diving. In addition, the physical cooling effect of the ice-vest was measured with a thermal mannequin.

Analysis of Parameter Effects on Transport Phenomena in Conjunction with Chemical Reactions in Ducts Relevant for Methane Reformers

Various transport phenomena in conjunction with chemical reactions are strongly affected by reformer configurations and properties of involved porous catalyst layers. The considered composite duct is relevant for a methane steam reformer and consists of a porous layer for the catalytic chemical reactions, the fuel gas flow duct and solid plate. In this paper, a fully three-dimensional calculation

Glucose levels and insulin secretion during a 75 g glucose challenge test in normal pregnancy

OBJECTIVES: The aim of the study was to evaluate glucose levels and insulin secretion early in pregnancy and at a time when gestational diabetes mellitus frequently occurs in order to define reference values for glucose tolerance during pregnancy. The results were also related to maternal factors that might identify subjects at risk of developing gestational diabetes mellitus as well as foetal fac

Chromosomal abnormalities in inflammatory pseudotumor of the urinary bladder

Inflammatory pseudotumors of the urinary bladder are rare, benign, nonepithelial tumors. Fewer than 30 have been reported, and no data are available on their karyotypic characteristics and/or the molecular mechanisms of pathogenesis. We performed short-term culturing and cytogenetic analysis of an inflammatory pseudotumor of the bladder, finding a der(20)t(12;20)(q13similar toq15;q13) as the only

Diffusion on complex networks: a way to probe their large-scale topological structures

A diffusion process on complex networks is introduced in order to uncover their large-scale topological structures. This is achieved by focusing on the slowest decaying diffusive modes of the network. The proposed procedure is applied to real-world networks like a friendship network of known modular structure, and an Internet routing network. For the friendship network, its known structure is well