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The choroid plexus (ChP) is part of the blood-cerebrospinal fluid barrier, regulating brain homeostasis and the brain's response to peripheral events. Its upregulation and enlargement are considered essential in psychosis. However, the timing of the ChP enlargement has not been established. This study introduces a novel magnetic resonance imaging-based segmentation method to examine ChP volumes in
Magnetic resonance imaging (MRI) is the primary method for noninvasive investigations of the human brain in health, disease, and development but yields data that are difficult to interpret whenever the millimeter-scale voxels contain multiple microscopic tissue environments with different chemical and structural properties. We propose a novel MRI framework to quantify the microscopic heterogeneity
American photographer Jerry N. Uelsmann (1934–2022) was a seminal figure in photo history. Uelsmann catalyzed the transfer from modernist to post-modern photography with his at the time controversial photo montages and double exposures. Decades before the birth of digital image editing programs like Photoshop, Uelsmann created photo montages by combining several negatives in the darkroom. He start
Transmission electron microscopy (TEM) is an atomic resolution technique that allows for in depth analysis of the properties of different materials by passing high energy electrons through a thin sample and detecting how they are affected. However, due to the strong interaction between electrons and matter, the probability of the sample remaining unperturbed by the electron irradiation is small. T
Although the effects of captive offshoring on firm innovation have increasingly become a subject of study, the literature did so far not distinguish between the effects on introducing innovation as opposed to the effects their market diffusion. This distinction is important. By integrating insights from the innovation diffusion literature, we argue that the effects of captive offshoring on home ba
Background: Intraventricular haemorrhage (IVH) is a major complication of preterm birth. Large haemorrhages are associated with a high risk of disability and hydrocephalus. Instability of blood pressure and cerebral blood in the newborn flow are postulated as causative factors. Another mechanism may involve reperfusion damage from oxygen free radicals. It has been suggested that phenobarbital stab
Background: Workers in the construction industry are highly exposed to vibration from handheld equipment, which can have negative effects on the nerves and blood vessels in the hands. Employers in this industry often fail to comply with legislation regarding vibration exposure. Aims: To assess carpenters' perceptions of proactive health and safety (H&S) management regarding hand-arm vibration
We first define a new multiplication on triangular Banach algebras. Then study amenability, weak amenability, biflatness and biprojectivity of these algebras.
This thesis consists of three self-contained papers studying different topics in health economics. The first chapter studies the substitution effect between in-person physician visits and a new type of doctor visits, direct-to-consumer (DCT) telemedicine, where a person can call a doctor directly via an app. To causally assess to which degree DCT consultations substitute for in-person consultation
Personalgruppens psykologi ger en grundläggande översikt över de psykologiska processer som kännetecknar en personalgrupp. Enkelt och lättillgängligt presenterar författarna teorier och begrepp som kan fungera som redskap för att förstå arbetslagets och samarbetets psykologiska villkor. Teori varvas med praktiska övningar och resonemang kring hur samarbetsproblem och konflikter kan förebyggas och
Extending the concept of weakly Kannan maps on metric spaces, we study the maps as $f:X\rightarrow X$ on a metric space $(X, d)$ satisfying condition $d(f(x), f(y)) \leq (1/2)\beta(d(x, y))[d(x ,f(x)) + d(y, f(y))]$ for every $x, y\in X$ and a function $\beta: [0, \infty)\rightarrow [0,1)$ where for every sequence $t=\{t_n\}$ of non-negative real numbers satisfying $\beta(t_n)\rightarrow 1,$ while
Background:Adults with CHD are a growing patient group and childbirth is a relatively new phenomenon. EQ-5D is commonly used to measure health-related quality of life. We sought to investigate EQ-5D status before, during, and after pregnancy in women with CHD.Methods:We identified 128 pregnancies in 86 CHD women giving birth in Skåne County during 2009–2021. Repeated measures ANOVA was performed t
Substitution of a polyelectrolyte for silica during formation of surfactant-templated films produces similar nano- and macroscale structures confirming that silica acts as a polyelectrolyte during thin film self-assembly.
The formation of variable thickness TiO 2 nanoparticle- Nafion® composite films with open pores is demonstrated via a layer-by-layer deposition process. Films of about 6 nm diameter TiO 2 nanoparticles grow in the presence of Nafion® by "clustering" of nanoparticles into bigger aggregates, and the resulting hierarchical structure thickens with about 25 nm per deposition cycle. Film growth is chara
We reveal a growth-collapse mechanism for self-assembled films of polyethyleneimine (PEI) and cetyltrimethylammonium bromide (CTAB) at the air-water interface. The work involved the quantification of film thickness on the micron scale through tracking oscillations in the amplitude and phase angles using single-angle, single-wavelength ellipsometry. Our results allow us to propose the following int
Recently we have investigated the formation of novel thick, solid, mesostructured films of polymer/surfactant mixtures which form spontaneously at the air-solution interface. Here we report studies of the effect of adding a series of sparingly soluble species to the precursor solution, to alter the mesostructure of cetyltrimethylammonium bromide/polyethylenimine films and to investigate the incorp
Synthetic methods for making an all-silica MCM-41 mesoporous silicate of high long-range order are reported. The product shows up to seven orders of X-ray diffraction and good stability under calcination conditions. The greatest improvement in structure occurs when the pH is held between 9 and 10 during synthesis and the sulfate anion is present.
