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PIV measurement of the flow field in rectangular ducts with 60 circle parallel, crossed and V-shaped ribs
The flow characteristics in rectangular ducts with aspect ratio of 1:8 were investigated experimentally using particle image velocimetry to reveal the function of the inclined ribs as turbulators or generators of favorable flows. Circular ribs were attached on the wide walls and the rib height-to-hydraulic diameter ratio was kept as 0.06 with an attack angle of 60degrees. The obtained results show
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This study investigated the role of P fimbriae in colonization of Escherichia coli, host response, and bacterial persistence in humans. Human volunteers were inoculated intravesically with the nonadherent ABU isolate E. coli 83972 and with P fimbriated transformants of the same strain. During the following 24 h all urine samples, and thereafter daily samples, were collected for urine culture, anal
Phasic non-micturition contractions in the bladder of the anaesthetized and awake rat.
Evaluation of artificial neural network techniques for river flow forecasting
River runoff forecasting is one of the most complex areas of research in hydrology because of the uncertainty of hydrological and meteorological parameters and scarcity of adequate records. Artificial neural networks (ANN) can be an efficient way of modeling stream flow processes as it is capable of controlling and modelling nonlinear and complex systems and does not require describing the complex
Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy
Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer (poly [2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothi adiazole)]) and an electron acceptor ([6,6]-phenyl-C-61-butyric acid methyl ester). The transient far-infrared response appears instantaneously after photoexcitation. We show that
Perceived participation and problems in participation are determinants of life satisfaction in people with spinal cord injury
Purpose. To determine the relationships between perceived participation and problems in participation, and life satisfaction in people with spinal cord injury (SCI). Method. A total of 157 men and women with SCI completed the Swedish versions of the Impact on Participation and Autonomy Questionnaire (IPA) and the Life Satisfaction Questionnaire (LiSat-9). Results. The respondents' perceived partic
Experimental check of the Gerasimov-Drell-Hearn sum rule for H-1
For the first time we checked the fundamental Gerasimov-Drell-Hearn (GDH) sum rule for the proton experimentally in the photon energy range from 0.2-2.9 GeV with the tagged photon facilities at MAMI (Mainz) and ELSA (Bonn). New data of the doubly polarized total cross section difference are presented in the energy range from 1.6 to 2.9 GeV. The contribution to the GDH integral from 0.2-2.9 GeV yie
Treatment and prevention of acute bleedings in von Willebrand disease--efficacy and safety of Wilate, a new generation von Willebrand factor/factor VIII concentrate.
For many patients with von Willebrand disease (VWD), the replacement therapy with von Willebrand factor (VWF)/factor VIII (FVIII) concentrates is the treatment of choice. To evaluate clinical efficacy, safety and tolerability of Wilate, an albumin-free VWF/FVIII concentrate with a ratio of the two haemostatic moieties of approximately 1 to 1, a prospective clinical programme has been designed. The
Book Review: Björn Bjerke Understanding Entrepreneurship. Cheltenham and Northampton, MA: Edward Elgar, 2007. 288 pp. ISBN 1—84720—066—2, £69.95 (hbk), ISBN 1—84720—067—9, £12.50 (pbk)
Dosimetric verification of breathing adapted radiotherapy using polymer gel
In radiation therapy patient movement caused by respiration can be a major challenge to the ambition to deliver a high absorbed dose to the target volume while minimizing the dose to normal tissues. Large respiratory motion requires increased margins, which implies an increased risk of morbidity from late toxicity. It is therefore important to take respiratory motion into account when treating tar
Differential homing mechanisms regulate regionalized effector CD8 alpha beta(+) T cell accumulation within the small intestine
The CC chemokine receptor (CCR)9 is expressed on the majority of small intestinal, but few colonic, T cells, whereas its ligand CCL25 is constitutively expressed by small intestinal epithelial cells. As such, CCR9/CCL25 have been proposed to play a central role in regulating small intestinal but not colonic immune responses and thus to organize regionalized immunity within the intestinal mucosa. H
Automated protein identification by the combination of MALDI MS and MS/MS spectra from different instruments
The identification of proteins separated on two-dimensional gels is most commonly performed by trypsin digestion and subsequent matrix-assisted laser desorption ionization (MALDI) with time-of-flight (TOF). Recently, atmospheric pressure (AP) MALDI coupled to an ion trap (IT) has emerged as a convenient method to obtain tandem mass spectra (MS/MS) from samples on MALDI target plates. In the presen
Application of Two Probabilistic Models, Using Either Environmental Monitoring or Human Biomonitoring Data, to Estimate Human Health Risk due to Mercury Exposure in a Small Scale Gold Mining Region in Central Nicaragua
Memory architecture evaluation for video encoding on enhanced embedded processors
In this paper we investigate the impact of different memory configurations on performance and energy consumption of the video encoding applications, MPEG-4 and H.264. The memory architecture is integrated with SIMD extended embedded processor, proposed in our previous work. We explore both dedicated memories and multilevel cache-architectures and perform exhaustive simulations. The simulations hav
Serum IGF-I, its major binding protein (IGFBP-3) and epithelial ovarian cancer risk: the European Prospective Investigation into Cancer and Nutrition (EPIC)
We set out to study the relationship between circulating levels of IGF-I and its major binding protein (IGFBP-3) in relation to ovarian cancer risk. We conducted a case-control study nested within the European Prospective Investigation into Cancer and Nutrition. Levels of IGF-I and IGFBP-3 were measured in prediagnostic serum samples of 214 women who subsequently developed ovarian cancer, and 388
Risk factors and treatment at recurrent stroke onset: Results from the recurrent stroke quality and epidemiology (RESQUE) study
Background: Much effort has been made to study first-ever stroke patients. However, recurrent stroke has not been investigated as extensively. It is unclear which risk factors dominate, and whether adequate secondary prevention has been provided to patients who suffer from recurrent stroke. Also, the different types of recurrent stroke need further evaluation. Methods: The study included patients
Shear-induced topology changes in liquid crystals of the soybean lecithin/DDAB/water system
The viscoelastic behavior of the two different liquid crystalline lamellar phases and the liquid crystalline cubic phase of the mixed soybean lecithin/DDAB system in water was studied through rheology, with mechanical parameters studied as a function of composition. The swollen or diluted lamellar region is formed by vesicles, and its characteristic flow curve presents two-power law regions separa
Effects of vasoactive intestinal peptide and galanin on survival of cultured porcine myenteric neurons
Enteric neuronal plasticity is probably fundamental in order to withstand injury or changes in intestinal activity. The role of the neuropeptides in neuroprotection is still enigmatic. The expression of galanin and vasoactive intestinal peptide (VIP) and the effects of the two peptides on survival of small intestinal porcine myenteric neurons cultured for 6 days were studied. Immunocytochemistry a
Effects of carbon substrate enrichment and DOC concentration on biodegradation of PAHs in soil
Aims: Two common reasons to explain slow environmental biodegradation of polycyclic aromatic hydrocarbons (PAHs), namely lack of appropriate carbon sources for microbial growth and limited bioavailability of PAHs, were tested in a laboratory bioassay using a creosote-contaminated soil. Methods and Results: The soil, containing a total of 8 mg g(-1) of 16 PAHs, was sieved and incubated in bottles f