Filtyp
In this work, different solutions for human presence detection in a door intercom device are examined. The study was conducted at a company in Lund, Sweden. The aspiration was to have a reliable presence detection to be able to put the device in sleep mode when not used, and the current solution is not optimal because of limiting design requirements and false triggers. In the project, several diff
Ögonen speglar om du flyttar eller stannar Migration är vanligt förekommande inom många olika djurgrupper. Att migrera kan ha många fördelar, som att undvika säsongsenliga utmaningar, men det finns också många nackdelar. Det tar på krafterna att förflytta sig och en migrant behöver dessutom olika anpassningar för att optimera resan. Här utgör synen ett viktigt sinnesorgan då många basbehov, som aAnimal migration is a widespread phenomenon that has evolved repeatedly in a diverse set of taxa. To cope with migration, individuals express a large variety of specialized behavioural adaptations, that rely on efficient sensory systems for extraction of relevant external information. Many behaviours are visually guided, such as foraging and predator avoidance, and most migratory animals possess e
As time is moving forward, the world is becoming more dependent on Internet of Things (IoT) devices. The vision for the future involves IoT devices participating in various aspects of our daily lives, including sensing, controlling, and communicating. Such a future requires a significant number of IoT devices, which raises questions regarding sustainability in terms of battery waste. One promising
Formerly widely distributed throughout Europe, the great snipe (Gallinago media) – a medium-sized wader species – has experienced an important decline in the last century, mainly driven by habitat loss. Remaining population are now restricted to eastern Europe and Scandinavia and the species is considered endangered. The great snipe (Gallinago media) is a food specialist, feeding almost exclusivel
The traditional art market is currently experiencing a digital transformation and multi-sided platforms (MSPs) for trading art are a major part of this. Much research has been done in the area of MSPs, however, there is a lack of studies in the field of starting such platforms for art. Therefore, this study aims to determine the critical success factors (CSFs) for starting an online art platform (
Det pågår just nu en omställning från fossila till förnyelsebara energiresurser. Exempel på förnyelsebara resurser är sol-, vind- och vattenkraft. Problemet är att energiproduktionen är beroende av att solen skiner, vinden blåser eller att vattnet flödar. Lösningen kan vara att lagra energin i smältsalter. I det här projektet utvecklades metoder för att internt kunna studera smältsaltskorrosion avMolten salt applications are challenging from a material perspective. This degree project was carried out at Alfa Laval to give them a better understanding of the corrosion of solar salt on the standard heat exchanger material stainless steel 321. Similar tests have previously been performed externally. By developing test methods for in-house corrosion testing time and money can be saved. In thi
Background: Transcatheter closure of secundum atrial septal defect (ASD) is nowadays the main treatment option in many centers worldwide. In symptomatic infants or in those with certain comorbidities, there is a need for early intervention. Limited data are available about the procedural safety in infants below 15 kg of weight. Methods: Retrospective review of all patients referred to our center f
Biomarkers for early detection of ovarian tumors are urgently needed. Tumors of the ovary grow within cysts and most are benign. Surgical sampling is the only way to ensure accurate diagnosis, but often leads to morbidity and loss of female hormones. The present study explored the deep proteome in well-defined sets of ovarian tumors, FIGO stage I, Type 1 (low-grade serous, mucinous, endometrioid;
AIMS: In the era of genome-wide association studies, familial risks are used to estimate disease heritability and success in gene identification. We wanted to estimate associations of 42 autoimmune diseases with attention-deficit hyperactivity disorder (ADHD) between individuals and family members.PARTICIPANTS AND METHODS: The availability of a Multigeneration Register in Sweden provides reliable
Semiconductor nanowire (NW) technology has emerged as a key facilitator of novel optoelectronics e.g. solar cells, photodetectors and LEDs. The functional wavelength range of current NW-based photodetectors is typically limited to the visible/near-infrared region. In this work, we present the first ever reported electrical and optical characteristics of longwavelength IR photodetectors based on la
Two studies were conducted to investigate the role of meat and arachidonic acid in colonie signal transduction, particularly protein kinase C (PKC) activation. In Study 1, 26 male Wistar rats were fed a casein‐ or a beef‐based diet for four weeks. PKC activity was measured from the proximal and distal colonie mucosa and diacylglycerol concentration from fecal samples. The beef diet significantly i
BACKGROUND: The outcome after weaning from postcardiotomy venoarterial extracorporeal membrane oxygenation (VA-ECMO) is poor. In this study, we investigated the prognostic impact of arterial lactate levels at the time of weaning from postcardiotomy VA.METHODS: This analysis included 338 patients from the multicenter PC-ECMO registry with available data on arterial lactate levels at weaning from VA
Genetic testing has been applied for decades in clinical routine diagnostics of hematological malignancies to improve disease (sub)classification, prognostication, patient management, and survival. In recent classifications of hematological malignancies, disease subtypes are defined by key recurrent genetic alterations detected by conventional methods (i.e., cytogenetics, fluorescence in situ hybr
As the proverbial noose tightens around humanity’s resource spending, research is focused on utilizing materials to their fullest potential. Nanotechnology is the ultimate way to economize by splitting objects into smaller parts and dispersing the material properties over greater surface to volume ratios. Emerging quantum effects at the nanoscale present unique tweaking opportunities in applicatio
BACKGROUND AND PURPOSE: In patients around retirement age controversy exists as to whether to treat displaced femoral neck fracture (dFNF) with internal fixation (IF) or arthroplasty. An arthroplasty in this age group may need revision due to a long expected remaining lifetime. IF carries a higher risk of early failure but a maintained native hip if healing occurs. We aimed to determine the cumula
The stacked multi-level (SML) klystron modulator topology has been suggested as an alternative to conventional pulse transformer based topologies in an attempt to improve output pulse performance and reduce system size for long pulse applications. In this topology, a power converter chain including a high frequency transformer generates the output pulse in a pulse modulation/demodulation scheme, e
The depletion of oil reserves and the increasingly stringent European Union regulation of air pollution have forced researchers and manufacturers to search for cleaner and sustainable substitutes to petroleum‐based transportation fuels. Biofuels like small aliphatic alcohols are of increasing interest as alternatives to fossil fuels, as they offer long‐term fuel‐source regenerability. As major adv
Background and aims: Ethnicity influences the prevalence of gestational diabetes (GDM) and its progression to manifest diabetes postpartum, being higher in non-European populations. This may partly be explained by differences in insulin secretion and action. Aims of the present study were to evaluate glucose homeostasis after GDM, the impact of ethnicity and other determinants of glucose toleranceBackground and aims: Ethnicity influences the prevalence of gestationaldiabetes (GDM) and its progression to manifest diabetes postpartum, beinghigher in non-European populations. This may partly be explained by differences in insulin secretion and action. Aims of the present study were toevaluate glucose homeostasis after GDM, the impact of ethnicity and otherdeterminants of glucose tolerance pos
Objectives: To describe the clinical and ultrasound characteristics of adnexal torsion. Methods: This was a retrospective study. From the operative records of the eight participating gynecological ultrasound centers, we identified patients with a surgically confirmed diagnosis of adnexal torsion, defined as surgical evidence of ovarian pedicle, paraovarian cyst and/or Fallopian tube twisted on its
