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Catchment & sewer network simulation model to benchmark control strategies within urban wastewater systems

This paper aims at developing a benchmark simulation model to evaluate control strategies for the urban catchment and sewer network. Various modules describing wastewater generation in the catchment, its subsequent transport and storage in the sewer system are presented. Global/local overflow based evaluation criteria describing the cumulative and acute effects are presented. Simulation results sh

Approximation schemes for capacitated geometric network design

We study a capacitated network design problem in a geometric setting. The input consists of an integral edge capacity k and two sets of points on the Euclidean plane, sources, and sinks, with an integral demand for each point. The demand of each source specifies the amount of flow that has to be shipped from the source, and the demand of each sink specifies the amount of flow that has to be shippe

Investigating the Potential of an Integrated Coolant Waste Heat Recovery System in an HD Engine Using PPC Operation

With the increasing focus on reducing emissions and making fuel efficient vehicles within the automotive industry over the past few years, new methods are constantly being investigated to improve the efficiency of the powertrain. One such method is recovering waste heat from the exhaust gases as well as the coolant using a thermodynamic cycle such as a Rankine cycle. However, most studies looking With the increasing focus on reducing emissions and making fuel efficient vehicles within the automotive industry over the past few years, new methods are constantly being investigated to improve the efficiency of the powertrain. One such method is recovering waste heat from the exhaust gases as well as the coolant using a thermodynamic cycle such as a Rankine cycle. However, most studies looking

Validation of the Viral Load Testing Criteria – an algorithm for targeted viral load testing in HIV-positive adults receiving antiretroviral therapy

Objectives: Restricted capacity for viral load (VL) testing is a major obstacle for antiretroviral therapy (ART) programmes in high-burden regions. Algorithms for targeted VL testing could help allocate laboratory resources rationally. We validated the performance of the Viral Load Testing Criteria (VLTC), an algorithm with satisfactory performance in derivation (sensitivity 91%, specificity 43%).

Efficient methodology for the extraction and analysis of lipids from porcine pulmonary artery by supercritical fluid chromatography coupled to mass spectrometry

Pulmonary artery grafts are needed as cardiovascular bioprosthetics. For successful tissue recellularization after transplantation, lipids have to be removed from the donor artery. Developing a selective process to remove lipids without damaging the extracellular matrix greatly depends on knowing the amount and type of lipid compounds in the specific tissue. Here we present an efficient methodolog

A Device that Models Human Swallowing

The pharynx is critical for correct swallowing, facilitating the transport of both air and food transport in a highly coordinated manner, and aberrant co-ordination causes swallowing disorders (dysphagia). In this work, an in vitro model of swallowing was designed to investigate the role of rheology in swallowing and for use as a pre-clinical tool for simulation of different routes to dysphagia. T

A simplified approach to array optimization for the DC resistivity and induced polarization method

In this work a simplified approach to array optimization for the DC resistivity and induced polarization method have been created and tested. The optimization method uses the centre of the sensitivity function for the individual electrode configurations, called the mass centre, which is spread over the area of investigation, wherefrom the name Spread of Mass Centre (SMC). This array has been teste

Detailed analysis of skin conductance responses during a gambling task : Decision, anticipation, and outcomes

Physiological arousal is considered a key factor of gambling behavior. Hence, to understand gambling behavior it is important to study the arousal responses during gambling. Moreover, crucial mechanisms of action could be uncovered by detailing the situations that produce an arousal response. A gamble, or bet, can be partitioned into three distinct phases: (a) decision phase, during which the info

Female variation in allocation of steroid hormones, antioxidants and fatty acids : a multilevel analysis in a wild passerine bird

The environment where an embryo develops can be influenced by components of maternal origin, which can shape offspring phenotypes and therefore maternal fitness. In birds that produce more than one egg per clutch, females differ in the concentration of components they allocate into the yolk along the laying sequence. However, identification of processes that shape female yolk allocation and thus o

Short exposure to oxygen and sulfide alter nitrification, denitrification, and DNRA activity in seasonally hypoxic estuarine sediments

Increased organic loading to sediments from eutrophication often results in hypoxia, reduced nitrification and increased production of hydrogen sulfide, altering the balance between nitrogen removal and retention. We examined the effect of short-term exposure to various oxygen and sulfide concentrations on sediment nitrification, denitrification and DNRA from a chronically hypoxic basin in Roskild

Water limitation can negate the effect of higher temperatures on forest carbon sequestration

Climate change will bring about a consistent increase in temperatures. Annual precipitation rates are also expected to increase in boreal countries, but the seasonal distribution will be uneven, and several areas in the boreal zone will experience wetter winters and drier summers. This study uses the dynamic forest ecosystem model ForSAFE to estimate the combined effect of changes in temperature a

Geophysical surveys for improving the hydrogeological conceptual models in the semi-arid region of Valle Alto (Bolivia)

Geophysical methods provide important information for mapping the subsurface. In semiarid areas, a detailed knowledge of the aquifers geometry can assist to a better management of groundwater. In the Valle Alto (Bolivia), which is a semiarid region, there is gap in the knowledge about the aquifer system geometry and hydrogeological processes. Local reports indicated problems in some wells such as

As good as it gets : an empirical study on mentally-ill patients and their stay at a general hospital in Sweden, 1896–1905

General hospital care and treatment of mentally ill patients in a Swedish town was studied in records for 503 patients, 1896–1905. Restraint was extremely rare; 65% left the hospital as healthy or improved. Non-psychotic and alcoholic patients spent fewer days in hospital than patients with psychosis or dementia. There was no evidence of a social status bias. For 36% of the patients a certificate

Attitudes matter - welfare work and migration in Sweden

This paper investigates the factors that influence Swedish welfare workers’ attitudes towards migrants and how these attitudes are associated with their encounters with migrant users. Due to increased migration over the last decade, Sweden is now considered an immigrant nation. Migrants with the right to reside in Sweden are included within the larger welfare system. This paper argues that preconc

Optimizing robust PID control of propofol anesthesia for children; design and clinical evaluation

Objective: The goal of this study was to optimize robust PID control for propofol anesthesia in children aged 5-10 years to improve performance, particularly to decrease the time of induction of anesthesia while maintaining robustness.Methods: We analyzed results of a previous study conducted by our group to identify opportunities for system improvement. Allometric scaling was introduced to reduce

Investigating Relational Ontologies in Macromarketing : Toward a Relational Approach and Research Agenda

The present paper assesses the usage of relational ontologies in the realm of macromarketing made available by consumer culture theorists. Our paper advances this movement by exploring the potential of relational ontologies to propel a more thorough methodological discussion and operationalization of relationality in macromarketing. To fulfill this task, the paper first identifies and discusses fo

Extended-wavelength diffuse reflectance spectroscopy for a comprehensive view of blood perfusion and tissue response in human forearm skin

BACKGROUND: The aim of this study was to investigate the possibility of using extended-wavelength diffuse reflectance spectroscopy (EW-DRS) to measure tissue response related to blood perfusion. The study was performed on a model that we have previously found to be useful for studying techniques for perfusion monitoring following the injection of epinephrine in a local anesthetic in the human fore

The Long and Short Arms of the State : Swedish Multidirectional Controls of Afghan Asylum Seekers During the Cold War

Drawing on unique sources from the Swedish Migration Agency Archive, this article examines how Afghan asylum seekers and refugees fared in their encounter with Swedish internal and external controls of people seeking protection from persecution during the Cold War. Within a theoretical framework that draws on the concept of statist logic, the history of refugeehood, interactionist sociology and cr

Book review: Gonzalo Villanueva, A Transnational History of the Australian Animal Movement

In A Transnational History of the Australian Animal Movement, Gonzalo Villanueva covers the important events that led to the addition of an entirely new issue to the political agenda, transforming the conditions of nonhuman animals into a matter of public concern. Grounded in transnational history, social movement studies, and the emerging field of critical animal studies, A Transnational History