Filtyp
This study investigated mental workload in basic civil aviation training. Heart rate, eye movement, and subjective ratings from 11 students were collected during simulator and aircraft sessions. Results show high correspondence in psychophysiological reactions between the sessions. For some flight segments, heart rate was consistently lower in the simulator, suggesting higher mental workload in th
Popular Abstract in Swedish Idag röker cirka 6% av alla gravida kvinnor i Sverige. I vissa regioner är andelen så hög som en av tio gravida kvinnor. Trots att det betyder att det har skett en kraftig nedgång sedan man började mäta utbredningen av graviditetsrökning i början på 80-talet, visar siffror att denna nedgång verkar ha avstannat. Det är känt sedan länge att rökning under graviditeten är sGlobally, around 10 % of women smoke during pregnancy today. It is known that pregnancy smoking increases the risk of adverse short-term health effects in the offspring, such as preterm birth, low birthweight and spontaneous abortion. Less is known about whether any adverse health effects persist until adulthood. In Sweden, there are nationwide population-based health registers that are becoming i
Popular Abstract in Swedish En ordentlig bildning av det centrala nervsystemet är viktigt för ett nyfött barn eller en vuxen. Den senaste tidens kartläggning av människans arvsmassa har lett till identifiering av ungefär 23000 gener, många av dem aktiva i det utvecklande nervsystemet. Men lite är känt om deras funktion och hur de samverkar för att påverka utvecklingen av organ så komplexa som den Morphogens such as Hedghog, Wnt, FGF, and retinoic acid are important signals whose concentrations need to be tightly regulated in the vertebrate embryo to ensure body axis development and formation of the central nervous system. We first show that the intracellular cytoplasmic protein XSufu acts as a dual regulator of Hedgehog (Hh) and Wnt signals during neural induction and patterning in the Xen
Oats (Avena sativa) are a cereal crop rich in dietary fibre, vitamins, antioxidants, and other nutrients. It is considered to have higher nutritional values compared to other cereals, with a higher fat content (2-13%). Oats also have high content of lipase enzymes when compared to other crops. The high lipase activity is unwanted in oats as it may induce hydrolytic rancidity, with a soapy, bitter
In this Master's thesis I present a means of finding active sources of cortical electrical activity from electroencephalogram (EEG) data acquired during operation of a brain-computer interface (BCI). A novel subspace-based technique was used to suppress spatially correlated EEG interference sources, followed by a technique that estimates the source parameters with a near maximum likelihood per
This thesis investigates the macroeconomic and stock market relationship in Sweden during 2000 – 2015, focusing on the Swedish stock index OMXS30 and the influence from foreign and domestic macroeconomic variables. The analysis covers long-term relationships, causalities and the influence on OMXS30 from short-term shocks in the selected macroeconomic variables. The data is analysed with co-integra
Molecular characterization of measles virus was part of the epidemiological investigation of 27 measles cases reported in Denmark in 2006. RT-PCR detected measles virus RNA from various types of clinical specimens in 24 cases. Virus genotypes were determined by sequencing the nucleocapsid (N) gene. Four different genotypes, B3, D4, D5 and D9 were identified including two variants of the D4 genotyp
To further clarify the mechanisms maintaining chronic atrial fibrillation (CAF). a method for system identification of activation patterns of the atria was developed. Data were obtained as repeated recordings of 8 s duration, each of 56 atrial bipolar electrograms, simultaneously acquired during open-heart surgery at multiple sites in the right atrial free wall in 12 patients with stable sinus rhy
A century after the Spanish Flu, the COVID-19 pandemic has brought renewed attention to socioeconomic and occupational differences in mortality in the earlier pandemic. The magnitude of these differences and the pathways between occupation and increased mortality remain unclear, however. In this paper, we explore the relation between occupational characteristics and excess mortality among men duri
The distortion of a sound wave during propagation results in progressive transfer of the energy from fundamental to higher harmonics, and is dependent on the nonlinearity of the medium. We studied if relative changes in acoustical nonlinearity occur in healthy myocardium during the cardiac cycle. Radiofrequency data were acquired from transthoracic echocardiography (2.5 and 3.5 MHz), parasternal l
Exotic plants can compete well with native species because many invasive species are considered better nutrient users in both low- and high-resource environments. However, whether invasive plants can outperform native plants at all stages of invasion is not very clear. We investigated the nitrogen (N), phosphorus (P) and N:P homeostasis of an invasive Eupatorium adenophorum and a co-occurring nati
Atmospheric CO2 concentrations declined markedly about 70,000 years ago, when the Earth's climate descended into the last glaciation. Much of the carbon removed from the atmosphere has been suspected to have entered the deep oceans, but evidence for increased carbon storage remains elusive. Here we use the B/Ca ratios of benthic foraminifera from several sites across the Atlantic Ocean to reconstr
The purpose was to examine the association between exercise during pregnancy and intelligence score in offspring. We analyzed data from 4008 women from the Aarhus Birth Cohort, Aarhus University Hospital, Denmark, recruited during pregnancy from July 1989 to November 1991 and their sons who were registered at conscription at 17-20 years of age. The women gave information by self-administered quest
The murine embryonal stem (ES) cell virus (MESV) can express transgenes from the long terminal repeat (LTR) promoter/enhancer in undifferentiated ES cells, but expression is turned off upon differentiation to embryoid bodies (EBs) and hematopoietic cells in vitro. We examined whether a human immunodeficiency virus type 1-based lentivirus vector pseudotyped with the vesicular stomatitis virus G pro
Improved efficacy of probiotics can be achieved by using different strategies, including the optimization of production parameters. The impact of fermentation parameters on bacterial physiology is a frequently investigated topic, but what happens during the formulation, i.e., the step where the lyoprotectants are added prior to freeze-drying, is less studied. In addition to this, the focus of proc
Purpose: The purpose is to investigate how the coronavirus disease 2019 (COVID-19) pandemic changed relocation behavior in an advanced economy. We compare manufacturing relocations before and during the pandemic to identify differences and similarities over time and between offshoring and backshoring. Design/methodology/approach: We use an exploratory longitudinal trend survey approach with data f
This paper explores whether the experience of a recession during early adulthood shapes individuals’ prosocial attitudes. The analysis uses survey responses to experimentally validated questions that measure prosocial attitudes for approximately 64,000 respondents in 74 countries. The identification approach exploits variation in recession experiences across 75 different birth cohorts. We find tha
Hippocampal theta oscillations have been implicated in associative memory in humans. However, findings from electrophysiological studies using scalp electroencephalography or magnetoencephalography, and those using intracranial electroencephalography are mixed. Here we asked 10 pre-surgical epilepsy patients undergoing intracranial electroencephalography recording, along with 21 participants under
