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Studiens målsättning har varit att ur ett energibesparingsperspektiv samt ekonomiskt perspektiv utvärdera termostatiska cirkulationsventiler (termiska ventiler) som används i varmvattencirkulation (VVC). De frågeställningar som belystes i studien var hur värmeförluster från VVC med termiska respektive fasta ventiler varierar, om det är ekonomiskt lönsamt att installera termiska ventiler jämfört meThe study's objective was, from an energy-saving and economical perspective, evaluate thermostatic circulation valves (thermal valves) used in hot water circulation (HWC). The issues that have been highlighted in the study were how the heat losses from HWC with thermal valves varies from HWC with fixed valves, whether it is economically viable to install thermal valves compared to fixed valves

When adopting the eight Millennium Development Goals (MDGs), in 2000, the United Nations General Assembly recognised the importance of good governance in reaching them. This study examines the hypothesis that good governance has an impact on the achievement of the MDGs. It does so by conducting regression analysis on the impact of good governance on the MDG indicators for water and sanitation. The

Barnets bästa ska vara avgörande vid alla beslut som rör vårdnad, boende och umgänge. Vid bedömningen av barnets bästa skall hänsyn tas till barnets vilja med beaktande av barnets ålder och mognad. Det framgår tydligt av såväl FN:s konvention om barnets rättigheter (barnkonventionen) och av svensk lag. Lagtexten ger endast vägledande riktlinjer när det gäller bedömningen av barnets bästa för att uThe best interest of the child should always be decisive in all decisions concerning custody, accommodation, and relations of the child. When assessing what is best for the child the will of the child should be considered. Moreover, the will of the child should be evaluated according to two affecting factors; age and maturity. This clearly appears in the Convention on the Rights of the Child prese

This master thesis investigates how municipalities can use action program for its safety work and how the municipality of Umeå can improve its work with such a program. Information has been gathered through literature studies and case studies involving the municipality of Umeå, four other municipalities and some of the responsible authorities for the area. Conclusions reached out is that an action

Objectives: Occupational exposure to diesel exhaust is common due the widespread use of dieselpowered combustion engines. Diesel exhaust is chemically complex and consists of thousands of compounds present as gases and particulate matter. Both nitrogen dioxide (NO2) and elemental carbon(EC) have been used as markers for diesel exhaust exposure. Currently EC is regarded as the best surrogate of die

Multi-component transient signals show up in many different areas, most commonly in communication and radar but are also often found in measurements of human related signals, such as electrical responses of the heart and the brain. Transient signals are also typical in animal acoustic applications, e.g., dolphin echo locations and bird song syllables. The usual basis functions in linear modeling oMulti-component transient signals show up in many different areas, most commonly in communication and radar but are also often found in measurements of human related signals, such as electrical responses of the heart and the brain. Transient signals are also typical in animal acoustic applications, e.g., dolphin echo locations and bird song syllables. The usual basis functions in linear modeling o

Forest ecosystems, covering over a third of land on the Earth, play a significant role in the global hydrological cycle, and influence soil erosion and climate change. However, the distribution, movements, quality of water, and hydrological processes in forested ecosystems are not well understood yet. This thesis aims to improve our understanding of the interaction between forest ecosystems and waForest ecosystems, covering over a third of land on the Earth, play a significant role in the global hydrological cycle, and influence soil erosion and climate change. However, the distribution, movements, quality of water, and hydrological processes in forested ecosystems are not well understood yet. This thesis aims to improve our understanding of the interaction between forest ecosystems and wa

Major volcanic eruptions are one of the most devastating and unpredictable events for all societies past and present. Althoughmajor progress has been made by archaeologists in understanding volcanic impacts on past societies, almost all this work hasfocused on urban or settled agricultural societies. In contrast, there is a major gap in knowledge about how forager communitieswere able to respond a

We Review How Different Bat Guilds Respond To Artificial Light At Night (Alan) And Assess How The Impacts Can Vary According To Ecological Context. All Studied European Species Respond Negatively To Alan Close To Roosts And Drinking Sites, And The Impacts Occur Across A Wide Range Of Light Colors And Intensities. Most Bat Species Are Sensitive To Alan When Commuting And Foraging. Although Narrow-S

BACKGROUND: Alzheimer's disease is characterized by an abnormal increase of phosphorylated tau (pTau) species in the CSF. It has been suggested that emergence of different pTau forms may parallel disease progression. Therefore, targeting multiple specific pTau forms may allow for a deeper understanding of disease evolution and underlying pathophysiology. Current immunoassays measure pTau epitopes

Flicker can be annoying, but above all it can have a negative effect on human health; causing irritation, headaches, eye strain and migraines. With the introduction of LED lamps, flicker has once again become a problem. In addition to the unnecessary suffering caused to individuals, the negative consequences create an obstacle to the wide and rapid adoption of new LED technology and thus also an oFlicker can be annoying, but above all it can have a negative effect on human health; causing irritation, headaches, eye strain and migraines. With the introduction of LED lamps, flicker has once again become a problem. In addition to the unnecessary suffering caused to individuals, the negative consequences create an obstacle to the wide and rapid adoption of new LED technology and thus also an o

Objectives: Carbon dioxide (CO2) angiography for endovascular aortic repair (CO2-EVAR) is used to treat abdominal aortic aneurysms (AAAs), especially in patients with chronic kidney disease or allergy to iodinated contrast medium (ICM). However, some technical issues regarding the visualization of the lowest renal artery (LoRA) and the best quality image through angiographies performed from pigtai

In this work, we present a novel self-aligned gate-last fabrication process for vertical nanowire metal-oxide-semiconductor field-effect transistors. The fabrication method allows for exposure dose-defined gate lengths and a local diameter reduction of the intrinsic channel segment, while maintaining thicker highly doped access regions. Using this process, InAs nanowire transistors combining good

Summary Background: Real-time perfusion (RTP) adenosine stress echocardiography (ASE) can be used to visually evaluate myocardial ischaemia. The RTP power modulation technique, provides images for off-line parametric perfusion quantification using Qontrast((R)) software. From replenishment curves, this generates parametric images of peak signal intensity (A), myocardial blood flow velocity (beta)

A central question in Alzheimer's disease concerns the mechanism by which β-amyloid contributes to neuropathology, and in particular whether intracellular versus extracellular β-amyloid plays a critical role. Alzheimer transgenic mouse studies demonstrate brain dysfunction, as β-amyloid levels rise, months before the appearance of β-amyloid plaques. We have now used immunoelectron microscopy to de