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Finite Element Analysis of Structure-Acoustic Systems; Formulations and Solution Strategies

This thesis is concerned with the finite element analysis of the small-amplitude coupled vibration problem of an acoustic fluid enclosed in a flexible and/or rigid container structure. The governing equations for linear elastic solids and inviscid acoustic fluids are derived by a continuum mechanics approach. Modified equations for an acoustic fluid interpenetrating a rigid incompressible porous m

Molecular Regulation of the Response of Brain Pericytes to Hypoxia

The brain needs sufficient oxygen in order to function normally. This is achieved by a large vascular capillary network ensuring that oxygen supply meets the changing demand of the brain tissue, especially in situations of hypoxia. Brain capillaries are formed by endothelial cells and perivascular pericytes, whereby pericytes in the brain have a particularly high 1:1 ratio to endothelial cells. Pe

Socialtjänstens arbete med social mobilisering av utsatta grupper

Den ekonomiska och sociala ojämlikheten har ökat väsentligt i Sverige under de senaste decennierna. Detta innebär stora utmaningar för socialtjänsten som möter de grupper som drabbats hårdast av denna utveckling. För att klara dessa utmaningar behöver socialtjänsten utveckla nya strategier som möjliggör hållbara sociala lösningar. I detta arbete kan social mobilisering bli ett viktigt redskap. I k

Islamiska regimen i Iran hetsar mot Sverige

Regimen i Iran missbrukar diplomatisk infrastruktur i operationer som underminerar internationell säkerhet. Sverige bör noggrant övervaka aktiviteterna vid Irans ambassad på Lidingö och överväga att stänga den helt och hållet. Det skriver Arvin Khoshnood, Irankännare och statsvetare samt Ardavan Khoshnood, docent Lunds universitet.The regime in Iran is abusing diplomatic infrastructure in operations that undermine international security. Sweden should closely monitor the activities at Iran's embassy in Lidingö and consider shutting it down entirely. This is written by Arvin Khoshnood, an Iran expert and political scientist, and Ardavan Khoshnood, an associate professor at Lund University.

Using Ethylcellulose to Structure Oil Droplets in Ice Cream Made with High Oleic Sunflower Oil

Abstract: In order to mimic physical characteristics of solid fat, ethylcellulose (EC) was used as an oleogelator in ice creams made with high oleic sunflower oil (HOSO). The aim was to improve structure of ice cream made with fully liquid vegetable oil by inhibiting droplet coalescence and to enable a colloidal fat network by making the oil droplets solid-like. Two different methods for incorpora

Examining the continuum of resistance model in two population-based screening studies in Sweden

In studies recruited on a voluntary basis, lack of representativity may impair the ability to generalize findings to the target population. Previous studies, primarily based on surveys, have suggested that generalizability may be improved by exploiting data on individuals who agreed to participate only after receiving one or several reminders, as such individuals may be more similar to non-partici

Coprostanol adsorption behavior in agricultural soil, riverbed sediment, and sand

The occurrence of coprostanol in soil, surface, and groundwater has recently been reported in several studies. Coprostanol indicates the presence of feces from mammals. For this reason, it is important to establish adsorption behavior in different kinds of geologic media. To our knowledge, we present for the first-time adsorption behavior of coprostanol in soil, sediment, and sand and an estimatio

Clonal Hematopoiesis of Indeterminate Potential Predicts Adverse Outcomes in Patients With Atherosclerotic Cardiovascular Disease

Background: Clonal hematopoiesis of indeterminate potential (CHIP)—the age-related clonal expansion of blood stem cells with leukemia-associated mutations—is a novel cardiovascular risk factor. Whether CHIP remains prognostic in individuals with established atherosclerotic cardiovascular disease (ASCVD) is less clear. Objectives: This study tested whether CHIP predicts adverse outcomes in individu

A Reply to “Comment on ‘A Literature Meta-Analysis of The Effects of Lockdowns on Covid-19 Mortality’”

In our meta-study from 2022, “A Literature Review and Meta-Analysis of the Effects of Lockdowns on COVID-19 Mortality – II,” we find that the effect of lockdowns—also referred to as ‘Covid restrictions,’ ‘social distancing measures,’ etc.—on mortality was negligible. The first version of our meta-study received criticism from Banholzer, et al. (2022). The authors raised “concerns regarding the sub

Opinion on Democracy in the digital age

Recent years have seen profound challenges to democracy, including grave populist and autocratic shifts. In the Opinion, the EGE examines how certain configurations of digital technologies can contribute to a weakening of democratic institutions, even if they may not be its sole cause. Among these are the spread of harmful information, an unduly narrow understanding of privacy, algorithmic surveil

Syndecan-4 is a maestro of gastric cancer cell invasion and communication that underscores poor survival

Gastric cancer is a dominating cause of cancer-associated mortality with limited therapeutic options. Here, we show that syndecan-4 (SDC4), a transmembrane proteoglycan, is highly expressed in intestinal subtype gastric tumors and that this signature associates with patient poor survival. Further, we mechanistically demonstrate that SDC4 is a master regulator of gastric cancer cell motility and in

Conversion efficiency of flight power is low, but increases with flight speed in the migratory bat Pipistrellus nathusii

The efficiency with which flying animals convert metabolic power to mechanical power dictates an individual's flight behaviour and energy requirements. Despite the significance of this parameter, we lack empirical data on conversion efficiency for most species as in vivo measurements are notoriously difficult to obtain. Furthermore, conversion efficiency is often assumed to be constant across flig

Patient experience and repeatability of measurements made with the Pentacam HR in patients with keratoconus

BACKGROUND: To investigate whether the repeatability of measurements with the Pentacam HR in patients with keratoconus is improved by patients gaining more experience of the measurement situation. Such an improvement could enhance the accuracy with which progressive keratoconus can be detected. METHODS: Four replicate measurements were performed on Day 0 and on Day 3. Parameters commonly used in t

The Prognostic Effect of IKZF1 Deletions in ETV6:: RUNX1 and High Hyperdiploid Childhood Acute Lymphoblastic Leukemia

IKZF1 deletions are an established prognostic factor in childhood acute lymphoblastic leukemia (ALL). However, their relevance in patients with good risk genetics, namely ETV6::RUNX1 and high hyperdiploid (HeH), ALL remains unclear. We assessed the prognostic impact of IKZF1 deletions in 939 ETV6::RUNX1 and 968 HeH ALL patients by evaluating data from 16 trials from 9 study groups. Only 3% of ETV6

Paternity through use of assisted reproduction technology in male adult and childhood cancer survivors : A nationwide register study

STUDY QUESTION: How does a history of cancer affect the likelihood of using assisted reproduction in order to achieve paternity? SUMMARY ANSWER: As compared to men with no history of cancer, use of assisted reproduction to achieve paternity was more frequent in fathers with a history of cancer, mainly those with testicular, prostate, and hematological and lymphatic malignancies. WHAT IS KNOWN ALRE

The importance of structural, situational, and psychological factors for involving hunters in the adaptive flyway management of geese

Adaptive flyway management of superabundant geese is emerging as a strategy to reduce damage to agricultural crops and other ecosystem disservices, while also ensuring sustainable use and conservation objectives. Given the calls for intensified hunting as part of flyway management in Europe, we need to increase the understanding of structural, situational, and psychological factors important for g