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SGX-Bundler: speeding up enclave transitions for IO-intensive applications
Process-based confidential computing enclaves such as Intel SGX can be used to protect the confidentiality and integrity of workloads, without the overhead of virtualisation. However, they introduce a notable performance overhead, especially when it comes to transitions in and out of the enclave context. Such overhead makes the use of enclaves impractical for running IO-intensive applications, suc
Atrioventricular plane displacement and regional function to predict outcome in pulmonary arterial hypertension
To investigate if left and right atrioventricular plane displacement (AVPD) or regional contributions to SV are prognostic for outcome in patients with pulmonary arterial hypertension (PAH). Seventy-one patients with PAH and 20 sex- and age-matched healthy controls underwent CMR. Myocardial borders and RV insertion points were defined at end diastole and end systole in cine short-axis stacks to coTo investigate if left and right atrioventricular plane displacement (AVPD) or regional contributions to SV are prognostic for outcome in patients with pulmonary arterial hypertension (PAH). Seventy-one patients with PAH and 20 sex- and age-matched healthy controls underwent CMR. Myocardial borders and RV insertion points were defined at end diastole and end systole in cine short-axis stacks to co
Centre–periphery contestation and the spatialization of Covid-19 discourse in Norway
This paper examines how and why the Norwegian government’s early handling of the Covid-19 pandemic became constructed as a centre–periphery issue in public discourse. By analysing opinion pieces and editorials published in a North Norwegian regional newspaper during the first months of the outbreak, it identifies how a ‘northern peripherality’ discourse emerged and highlighted geographical, infras
The Meridian S02E05 : New insights into Venus' past & an erupting volcano
Michael Way works at the NASA Goddard Institute for Space Studies where he is modeling planetary atmospheres, with a special interest for Venus and its history. He was visiting Lund Observatory to give a talk at the Källén Seminars for Young Astronomers recently, and we invited him onto the podcast to ask him if there is a chance that Venus has ever been habitable (Spoiler: the answer is 'yes'). I
The role of microscale solid matrix compressibility on the mechanical behaviour of poroelastic materials
We present the macroscale three-dimensional numerical solution of anisotropic Biot's poroelasticity, with coefficients derived from a micromechanical analysis as prescribed by the asymptotic homogenisation technique. The system of partial differential equations (PDEs) is discretised by finite elements, exploiting a formal analogy with the fully coupled thermal displacement systems of PDEs implemen
The importance of including habitat-specific behaviour in models of butterfly movement
Dispersal is a key process affecting population persistence and major factors affecting dispersal rates are the amounts, connectedness and properties of habitats in landscapes. We present new data on the butterfly Maniola jurtina in flower-rich and flower-poor habitats that demonstrates how movement and behaviour differ between sexes and habitat types, and how this effects consequent dispersal rat
Effect and optimization of backward hole parameters on film cooling performance by Taguchi method
In recent years, increasing inlet temperature of gas turbines has far exceeded the melting point of the metal materials. Film cooling technology has widely been used to protect gas turbine blades from erosion of the high-temperature gases. The film cooling performance can be improved by optimization of the hole configurations. Results show that the backward injection hole has a smaller exit moment
Developmentally regulated volatiles geosmin and 2-methylisoborneol attract a soil arthropod to Streptomyces bacteria promoting spore dispersal
Volatile compounds emitted by bacteria are often sensed by other organisms as odours, but their ecological roles are poorly understood1,2. Well-known examples are the soil-smelling terpenoids geosmin and 2-methylisoborneol (2-MIB)3,4, which humans and various animals sense at extremely low concentrations5,6. The conservation of geosmin biosynthesis genes among virtually all species of Streptomyces
ETV in infancy and childhood below 2 years of age for treatment of hydrocephalus
Purpose: Age and etiology play a crucial role in success of endoscopic third ventriculostomy (ETV) as a treatment of obstructive hydrocephalus. Outcome is worse in infants, and controversies still exist whether ETV is superior to shunt placement. We retrospectively analyzed 70 patients below 2 years from 4 different centers treated with ETV and assessed success. Methods: Children < 2 years who rec
Effects of non-steroidal anti-inflammatory drugs and other eicosanoid pathway modifiers on antiviral and allergic responses : EAACI task force on eicosanoids consensus report in times of COVID-19
Non-steroidal anti-inflammatory drugs (NSAIDs) and other eicosanoid pathway modifiers are among the most ubiquitously used medications in the general population. Their broad anti-inflammatory, antipyretic, and analgesic effects are applied against symptoms of respiratory infections, including SARS-CoV-2, as well as in other acute and chronic inflammatory diseases that often coexist with allergy an
Model-driven development: A review of current researchx
The Meridian S01E03 : Exoplanetary atmospheres on World Space Week
In this third episode of the podcast Nic and Rebecca invite Jens Hoeijmakers to the mic and chat to him about ultra-hot Jupiters and their atmospheres. Thereafter they take a closer look at a comet, which is named after the its two discoverers: Michel Giacobini and Ernst Zinner.
The Meridian S01E04 : Synchrotron radiation at Max IV
In this fourth episode of the podcast Nic and Rebecca invited Laura Hrastar to the mic and chatted with her about life and work at Max IV - which is a Swedish national laboratory producing brilliant synchrotron radiation for various research projects . Thereafter they take a closer look at the galaxy listed as the 31st object in the Messier Catalogue.
Dose-efficient multimodal microscopy of human tissue at a hard X-ray nanoprobe beamline
X-ray fluorescence microscopy performed at nanofocusing synchrotron beamlines produces quantitative elemental distribution maps at unprecedented resolution (down to a few tens of nanometres), at the expense of relatively long measuring times and high absorbed doses. In this work, a method was implemented in which fast low-dose in-line holography was used to produce quantitative electron density ma
Bureaucracy and Growth
We revisit the hypothesis that a Weberian bureaucracy enhances economic growth. Theoretically, we develop arguments for why such a bureaucracy may enhance growth and discuss plausible counterarguments. Empirically, we use new measures capturing various Weberian features in countries across the world, with some time series extending back to 1789. The evidence base from previous large-N studies is s
Cascading proton transfers are a hallmark of the catalytic mechanism of SAM-dependent methyltransferases
The S-adenosyl-L-methionine (SAM)-dependent methyltransferases attach a methyl group to the deprotonated methyl lysine (Kme0) using SAM as a donor. An intriguing, yet unanswered, question is how the deprotonation of the methyl lysine takes place which results in a lone pair of electrons at the Nϵ atom of the methyl lysine for the following methyl transfer. PRDM9, one of the few methyltransferases
Selective probing of the OH or OD stretch vibration in liquid water using resonant inelastic soft-X-ray scattering
High-resolution O 1s resonant inelastic x-ray scattering spectra of liquid H2O, D2O, and HDO, obtained by excitation near the preedge resonance show, in the elastic line region, well-separated multiple vibrational structures corresponding to the internal OH stretch vibration in the ground state of water. The energy of the first-order vibrational excitation is strongly blueshifted with respect to t
Recently lost connectivity in the Western Palaearctic steppes : the case of a scarce specialist butterfly
Palaearctic steppes evolved under the Cenozoic cold arid climate and megaherbivore pressure. A large portion of the biome persisted into the Holocene but has recently been subjected to human land use alternation. Pseudophilotes bavius (Lepidoptera: Lycaenidae) is a steppe specialist sporadically distributed in Eastern Europe and Pontic-Caspian region (from Transylvania to Southern Urals), the Balk
Cancer differentiating agent hexamethylene bisacetamide inhibits BET bromodomain proteins
Agents that trigger cell differentiation are highly efficacious in treating certain cancers, but such approaches are not generally effective in most malignancies. Compounds such as DMSO and hexamethylene bisacetamide (HMBA) have been used to induce differentiation in experimental systems, but their mechanisms of action and potential range of uses on that basis have not been developed. Here, we sho