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The purpose of this work is to present results from an ongoing study on how the presence of surfaces influences the buckling properties of nanowires. This study is performed using molecular statics simulations where the interatomic interaction is modelled using an embedded atom potential (EAM) fitted to gold properties. The considered nanowires have rectangular cross sections with cross sectional
Natural lifetimes of some highly excited levels in the Pb-I spectrum have been measured by the zero field level crossing (Hanle) method. The levels were reached by optical excitation from the metastable 6p2 3P2 and 6p2 3P1 states, were a considerable population had been created by means of adc discharge in a Pb atomic beam. An atomic beam source producing atoms in metastable states is described. F
Att behandla tumörsjukdomar genom injektion av radioaktiva läkemedel är en behandlingsteknik kallad radionuklidterapi. Det radioaktiva läkemedlet består av en radioaktiv isotop, fäst på en målsökande bärarmolekyl, specifik för den vävnad vari man önskar att läkemedlet skall ansamlas. Då den radioaktiva isotopen sönderfaller sänds joniserande strålning ut; strålning med förmågan att jonisera molekyIntroduction: There is a need of reassessment of radiation absorbed dose specification in nuclear medicine, taking the non-uniformities in the distribution of radioactivity into account. This is especially important in radionuclide therapies where very high activities are administered and the radionuclides emit alpha particles, beta particles or low-energy electron and will require absorbed dose c
Activation-induced cytidine deaminase (AID) is an enzyme and key component of both 15 class-switch recombination and somatic hypermutation, two mechanisms used by activated B 16 cells to diversify their antigen repertoire, as it catalyzes the deamination of deoxycytidines turning 17 them into deoxyuridines, introducing mutations in immunoglobulin genes. AID, however, can also 18 target enhancer re
The Zumaya section, northern Spain, is a suitable candidate to define the Global Stratotype Section and Point for the base of the Selandian Stage (Palaeocene) because of its excellent accessibility, exposure and stratigraphic continuity. Uncertainties exist, however, with regard to the stratigraphic horizon where to place the Danian/Selandian (D/S) boundary. Five potential stratigraphic horizons (
The paper compares PM10 concentrations in railroad environments with EU air quality standards and characterizes particle concentrations and particle properties in relation to train traffic. The results show that PM10 concentrations in ground-level railroad environments do not exceed the EU directive 24-h limit value, while on the platforms of the two subterranean stations PM10 concentrations were
Chronic mesenteric ischaemia is a rare but serious condition, which if untreated may cause death secondary to starvation or bowel infarction. As the symptoms are sometimes unspecific, its diagnosis may be delayed or missed. Although open surgical revascularisation has been the traditional treatment, a review of published reports suggests it to be associated with operative mortality rates of 6-9 pe
Kvidingefältet ligger i nordvästra Skåne på Söderåsens nordöstra sida och avlagringen är ett delta som bildades i en havsvik under deglaciationen av området. Syftet med undersökningen är att göra en arkitektonisk analys av Kvidingedeltats tredimensionella uppbyggnad och att ta reda på hur deltautbyggnaden gått till. Sedimentologiska studier i form av översiktskartering utfördes i åtta av täkternasThe Kvidinge deposit is situated in north-western Scania, southern Sweden. It is a delta formed in a bay during the deglaciation of the area. The purpose of the investigation is to do an architectural analysis of the threedimensional build-up of the Kvidinge deposit and to reconstruct the progradation of the delta. Sedimentary studies have been performed in eight sections and seven logs have been
This study examines the burgeoning patterns of the phenomenon of new-build gentrification. This phenomenon reflects a social justice imbalance, where affluence takes precedence over equitable access and the interests of economically vulnerable groups, in shaping urban spaces. While economic and environmental sustainability have been prioritized in urbanization goals, the social dimensions, includi
Anesthesiology is the medical specialty dedicated to the relief of pain and care of the surgical patient before, during and after surgery. Most of the work in anesthesiology is routine patient care, but because patients are sick and surgical procedures may develop in unexpected ways, anesthesiology by its nature often involves medical crises. In recent years, two concepts have gained increasing i
This thesis studies the impact of the war in Ukraine on stock prices of firms within the European defense industry. While previous studies have examined the effects of war on stock prices of defense firms, fewer studies specifically focus on the war in Ukraine. Furthermore, this thesis focuses solely on European defense firms, offering a new geographical perspective to the topic. Additionally, the
A technology was developed to embed nm-sized metallic features in close vicinity to semiconductor heterostructures, which allows a direct integration of resonant tunneling diodes (RTD) inside the channel of permeable base transistor. A AlGaAs/InGaAs based RTD was grown by molecular beam epitaxy (MBE), with peak current density either 70 or 120 kA/cm2. A fundamental oscillation frequency
This study uses a discontinuity in the Swedish tertiary eligibility requirement to estimate the probability of enrolling in tertiary education, and the payoff thereof. Regression discontinuity results, show that achieving tertiary eligibility in upper-secondary education, increases the probability of enrolling in tertiary education by around 10–15 and 7 percentage points for students who enrolled
