Sökresultat

Filtyp

Din sökning på "*" gav 531196 sökträffar

Partially Premixed Combustion (PPC) Stratification Control to Achieve High Engine Efficiency

Partially premixed combustion (PPC) is a hybrid combustion of Homogeneous Charge Compression Ignition (HCCI) and Diesel Combustion (DC), which has a great potential in reducing the fuel consumption. PPC has a longer premixed time than DC but lesser than HCCI. Therefore it is more stratified than HCCI. This paper first presents results on how the stratification using multiple injections and differe

Numerical study of non-reactive tracer transport in a heterogeneous field, with random microscopic dispersivity

One of the most important processes for the groundwater environment is macroscopic dispersion in geological media. In this study, laboratory experiments and numerical simulations are carried out in order to understand the transport of a non-reactive tracer in a heterogeneous porous medium. The method of characteristics and the implicit finite difference method are employed for numerical solutions

Mean arterial pressure during targeted temperature management and renal function after out-of-hospital cardiac arrest

Purpose: This study investigates the association between mean arterial pressure (MAP) and renal function after out-of-hospital cardiac arrest (OHCA). Materials and methods: Post-hoc analysis of 851 comatose OHCA-patients surviving >48 h included in the targeted temperature management (TTM)-trial. Results: Patients were stratified by mean MAP during TTM in the following groups; 80 mmHg (35%). Medi

Aggregation pheromones of Drosophila immigrant, D. phalerata, and D. subobscura

Aggregation pheromones of Drosophila immigrans, D. phalerata and D. subokscura were demonstrated by testing attraction of adult flies to hexane extracts of the flies in a windtunnel bioassay. Extracts of adult males of all species attracted conspecific males and females. However. D. suhobscura flies were attracted only when the extract was applied on food. GC-MS analysis identified (Z)-11-octadece

Food- and density-dependent dispersal : Evidence from a soil collembolan

1. Dispersal in a fungivore species of Collembola, Onychiurus armatus, in a homo- geneous soil was theoretically approached as a deterministic compartmental process, in which the movement of animals between discrete patches could be described by a series of differential equations or by the discrete geometric probability distribution, assuming a constant probability to move from one patch to the ne

On the Limit Theory of Mixed to Unity VARs: Panel Setting With Weakly Dependent Errors

In this paper we re-visit a recent theoretical idea introduced by Phillips and Lee (2015). They examine an empirically relevant situation when multiple time series under consideration exhibit different degrees of non-stationarity. By bridging the asymptotic theory of the local to unity and mildly explosive processes, they construct a Wald test for the commonality of the long-run behavior of two se

"En temmelig lang fodtur" : HGIS, Text mining, and folklore collection in 19th century denmark

In Scandinavia, the folklore collection of the nineteenth and early twentieth centuries coincided with rapid changes in political, economic, and social organization, and resulted in national collections of extraordinary scope. Although some later folklorists have expressed skepticism about the usefulness of these collections as resources for the study of folklore, ethnography and intellectual hist

Sequence dependence and direct measurement of crossover isomer distribution in model Holliday junctions using NMR spectroscopy

A 32-base-pair model of the Holliday junction (HJ) intermediate in genetic recombination has been prepared and analyzed in-depth by 2D and 3D 1H NMR spectroscopy. This HJ (J2P1) corresponds to a cyclic permutation of the base pairs at the junction relative to a previously studied HJ [J2; Chen, S.-M., and Chazin, W. J. (1994) Biochemistry 33, 11453-11459], designed to probe the effect of the sequen

Correlated long-range mixed-harmonic fluctuations measured in pp, p+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector

Correlations of two flow harmonics vn and vm via three- and four-particle cumulants are measured in 13 TeV pp, 5.02 TeV p+Pb, and 2.76 TeV peripheral Pb+Pb collisions with the ATLAS detector at the LHC. The goal is to understand the multi-particle nature of the long-range collective phenomenon in these collision systems. The large non-flow background from dijet production present in the standard c

Pain management strategies among persons with long-term shoulder pain after stroke – a qualitative study

Objective: To explore strategies that persons with persistent shoulder pain after stroke use to manage their pain in daily life. Design: A qualitative study using semi-structured face-to-face interviews, analysed by content analysis. Setting: A university hospital. Subjects: Thirteen community-dwelling persons (six women; median age: 65 years; range 57–77) with shoulder pain after stroke were inte

Midterm results of laser generated in situ fenestration of the left subclavian artery during thoracic endovascular aneurysm repair

Objective: To analyze the midterm result of in situ fenestration (ISF) of the left subclavian artery (LSA) during thoracic endovascular aneurysm repair (TEVAR). Methods: In this clinical study, between 2014 and 2016, ISF for LSA revascularization was attempted during TEVAR in 10 patients (7 males; median age, 68 years). An excimer laser, placed from the left brachial artery, was used to create a f

Mechanisms Underlying Aggressive Behavior Induced by Antiepileptic Drugs : Focus on Topiramate, Levetiracetam, and Perampanel

Antiepileptic drugs (AEDs) are effective against seizures, but their use is often limited by adverse effects, among them psychiatric and behavioral ones including aggressive behavior (AB). Knowledge of the incidence, risk factors, and the underlying mechanisms of AB induced by AEDs may help to facilitate management and reduce the risk of such side effects. The exact incidence of AB as an adverse e