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Interface Modification and Characterization of Nanostructured Semiconductors : A Bridge to Contemporary Electronics

This research presents advancements into the fabrication, operation and characterization of electronicnanomaterials and devices. It focuses on the interfaces of metals, oxides and semiconductors anddeveloping techniques to improve their integration into devices. Covering nanoelectronics fromphotovoltaics to circuit elements, a combined suite of scanning probe and X-ray techniques was usedto provid

Role of the polyamine transporter PotABCD during biofilm formation by Streptococcus pneumoniae

Streptococcus pneumoniae is a bacterium of great global importance, responsible for more than one million deaths per year. This bacterium is commonly acquired in the first years of life and colonizes the upper respiratory tract asymptomatically by forming biofilms that persist for extended times in the nasopharynx. However, under conditions that alter the bacterial environment, such as viral infec

HAMLET, a human milk protein-lipid complex, modulates amoxicillin induced changes in an ex vivo biofilm model of the oral microbiome.

Challenges from infections caused by biofilms and antimicrobial resistance highlight the need for novel antimicrobials that work in conjunction with antibiotics and minimize resistance risk. In this study we investigated the composite effect of HAMLET (human alpha-lactalbumin made lethal to tumor cells), a human milk protein-lipid complex and amoxicillin on microbial ecology using an ex vivo oral

Structure, oxidation, and catalytic activity of platinum-tin surfaces

This thesis work has focused on the platinum-tin surface, especially how it behaves when exposed to gases like oxygen and carbon monoxide. Platinum-tin is used as a catalyst for a range of reactions, including the oxidation of carbon monoxide at mild conditions, which is important for gas purification in fuel cells. The platinum-tin alloy has properties useful for the reactions it catalyses, but i

Understanding the genetic complexity of puberty timing across the allele frequency spectrum

Pubertal timing varies considerably and is associated with later health outcomes. We performed multi-ancestry genetic analyses on ~800,000 women, identifying 1,080 signals for age at menarche. Collectively, these explained 11% of trait variance in an independent sample. Women at the top and bottom 1% of polygenic risk exhibited ~11 and ~14-fold higher risks of delayed and precocious puberty, respe

Evaluation of self-monitoring of blood pressure in the PERHIT study and the impact on glomerular function

BACKGROUND: Although intensive blood pressure (BP) control has not been shown to slow the progression of chronic kidney disease (CKD), intensive BP control has been shown to reduce the risk for adverse cardiovascular outcomes in the CKD population. The aim of this post-hoc study was to study the interplay between a self-monitoring BP system and glomerular function.METHODS: In all, 949 participants

Understanding transience and participation in university student-led food gardens

In an increasingly mobile world, transience is becoming the norm. Sustainable community food initiatives, therefore, must organise to withstand high turnover of volunteers. Using a case study of the United Kingdom's National Union of Students' food growing scheme in universities, this paper aims to map the causes and effects of short-term, irregular, and low participation using a causal loop diagr

‘Bildung Life’ : Holistic Ideals of Hip Hop Education

Over the past fifteen years, Hip Hop–based education has gained ground in academic literature, especially so by building on the educational tradition and gospel of Each One Teach One. A contribution to this scholarly discussion is the Scandinavian attempt to analytically tie Hip Hop education to perspectives on learning and pedagogy that traditionally derives from popular movements of the twentiet

The Kinetics and Thermodynamics of the Amyloid Beta Peptide

Amyloids are a category of protein structures where many individual polypeptide chains fold to form long β-sheet fibrils. These are strongly associated to many of today's incurableand fatal diseases, such as Alzheimer's and Parkinson's disease. However, the exact cause of toxicity and disease initiation remains elusive. Amyloids are also interesting from a materials science perspective. Therefore,

Health determinants among participants in targeted health dialogues offered to all 40-year-old individuals in a metropolitan region of 1.4 million people

Objective: To examine cardiovascular risk factors in 40-year-old participants in the health screening program targeted health dialogues (THDs). Design: Cross-sectional study. Setting: 99 Swedish healthcare centers. Intervention: Metabolic risk factors and health behaviors were assessed. THDs were provided. Subjects: 1831 (62.3%) THD participants that consented to take part in the research project.

Quality of life for patients with advanced gastrointestinal cancer randomised to early specialised home-based palliative care: the ALLAN trial

BackgroundThe primary aim of specialised palliative care (SPC) is to improve the quality of life (QoL) for patients with a high symptom burden from a life-threatening disease. This randomised study aimed to assess the QoL impact of early integration of SPC alongside tumour-specific palliative treatment in patients with gastrointestinal (GI) cancers.MethodsWe randomly assigned ambulatory patients w

Particle lung deposited surface area (LDSAal) size distributions in different urban environments and geographical regions : Towards understanding of the PM2.5 dose–response

Recent studies indicate that monitoring only fine particulate matter (PM2.5) may not be enough to understand and tackle the health risk caused by particulate pollution. Health effects per unit PM2.5 seem to increase in countries with low PM2.5, but also near local pollution sources (e.g., traffic) within cities. The aim of this study is to understand the differences in the characteristics of lung-

Amyloid Oligomers : Capturing the threat between disorder and order

Amyloid proteins are species whose aggregation has been associated with various neurodegenerative diseases. While intrinsically disordered in their monomeric form, they tend to aggregate into highly ordered β-sheet rich fibrils. Nevertheless, many studies indicate that intermediate species known as amyloid oligomers, which are linked to neurotoxicity, may be the connection between amyloid proteins

Diffusion Bonding 321-Grade Stainless Steel : Failure and Multimodal Characterization

Vacuum diffusion-bonded printed circuit heat exchangers are an attractive choice for the high-temperature, high-pressure demands of next-generation energy applications. However, early reports show that the high-temperature materials desired for these applications suffer from poor bond strengths due to precipitation at the bond line, preventing grain boundary migration. In this study, a diffusion b

Management of groin hernia repair in Sweden : A register-based comparative analysis of public and private healthcare providers

Background: Swedish healthcare is in a period of transition with an expanding private sector. This study compares quality of outcome after groin hernia repair performed in a public or private healthcare setting. Methods: A cohort study based on data from the Swedish National Hernia Register combined with Patient-Reported Outcome Measures (PROMs) 1 year after groin hernia repair. Between September

Multimorbidity disease clusters are associated with venous thromboembolism : an extended cross-sectional national study

Multimorbidity, i.e., two or more non-communicable diseases (NCDs), is an escalating challenge for society. Venous thromboembolism (VTE) is a common cardiovascular disease and it is unknown which multimorbidity clusters associates with VTE. Our aim was to examine the association between different common disease clusters of multimorbidity and VTE. The study is an extended (1997–2015) cross-sectiona

Impact of extreme flows on bridges : A case study from Lagan river, Ljungby

Flowing water impacts bridges over rivers primarily in two ways: (1) hydrodynamic forces that directly impact the structure and (2) scouring at piers and abutments, including contraction scour. The design prin-ciples for bridges in Sweden, including both impacting forces and local scour, are relatively simplistic. The purpose of this paper is to examine the impact of extreme river flows on bridges

Localization and tracking

The use of radio signal for position tracking (positioning) and navigation has a long tradition. Most notably, global navigation satellite systems (GNSS) are now widely applied for civilian applications, ranging all the way from tracking of cargo containers to gaming. However, GNSS suffers from limited coverage in dense urban areas and indoors and also from a limited position accuracy, which rules

Familial Associations of Colon and Rectal Cancers With Other Cancers

BACKGROUND: Many studies have indicated that colon and rectal cancers differ in etiology and histology. OBJECTIVE: The aim of this study was to investigate whether the associations of colon and rectal cancers with any other (discordant) cancer were site specific. DESIGN: A novel approach was implemented in which cancer risks were analyzed in families with increasing numbers of family members diagn