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Ten essentials for action-oriented and second order energy transitions, transformations and climate change research

The most critical question for climate research is no longer about the problem, but about how to facilitate the transformative changes necessary to avoid catastrophic climate-induced change. Addressing this question, however, will require massive upscaling of research that can rapidly enhance learning about transformations. Ten essentials for guiding action-oriented transformation and energy resea

Performance and emissions of diesel-gasoline-ethanol blends in a light duty compression ignition engine

An approach to reduce CO2 emissions while simultaneously keeping the soot emissions down from compression ignition (CI) engines is to blend in short chained oxygenates into the fuel. In this work, two oxygenated fuel blends consisting of diesel, gasoline and ethanol (EtOH) in the ratio of 68:17:15 and 58:14:30 have been utilized and studied in a single cylinder light duty (LD) CI engine in terms o

Electroluminescent cooling in intracavity light emitters : modeling and experiments

We develop a coupled electronic charge and photon transport simulation model to allow for deeper analysis of our recent experimental studies of intracavity double diode structures (DDSs). The studied structures consist of optically coupled AlGaAs/GaAs double heterojunction light emitting diode (LED) and GaAs p–n-homojunction photodiode (PD) structure, integrated as a single semiconductor device. T

Helicity-dependent terahertz emission spectroscopy of topological insulator S b2 T e3 thin films

We report on helicity-dependent terahertz emissions that originate from the helicity-dependent photocurrents in topological insulator Sb2Te3 thin films due to ultrafast optical excitation. The polarity of the emitted terahertz radiation is controlled by both the incident angle and the helicity of optical pulses. Using an unprecedented decomposition-recombination procedure in the time domain, the s

Analysis of heat losses in underground tunnels for preheating of ventilation air

Methods for calculation of thermal conditions and heat loss parameter for an underground tunnel into surrounding sub-soil were developed in the first half and in the middle of the 20th century [18-20], when the study of complex heat-and mass exchange processes between underground tunnel, sub-soil and outdoor air was started. In a tunnel it is important to meet specific microclimate parameters such

Calibration and testing of a portable NaI(Tl) gamma-ray spectrometer-dosimeter for evaluation of terrestrial radionuclides and 137Cs contributions to ambient dose equivalent rate outdoors

A commercially available NaI(Tl) based spectrometer-dosimeter has been used to separate contributions of the terrestrial radionuclides (238U series, 232Th series and 40K) and 137Cs to the total ambient dose equivalent rate (ADER), Ḣ*(10) , outdoors. The device had been initially calibrated by the manufacturer to measure: 1) the total ADER; 2) activity concentrations of 226Ra, 232Th, 40K and ‘effec

Indacaterol/glycopyrronium is cost-effective compared to salmeterol/fluticasone in COPD : FLAME-based modelling in a Swedish population

Background: This study assessed the cost-effectiveness of indacaterol/glycopyrronium (IND/GLY) versus salmeterol/fluticasone (SFC) in chronic obstructive pulmonary disease (COPD) patients with moderate to very severe airflow limitation and ≥1 exacerbation in the preceding year. Methods: A previously published and validated patient-level simulation model was adapted using clinical data from the FLA

Tau haplotypes support the Asian ancestry of the Roma population settled in the Basque Country

We examined tau haplotype frequencies in two different ethnical groups from the Basque Country (BC): Roma people and residents of European ancestry (general population). In addition, we analyzed the spatial distribution of tau haplotypes in Eurasian populations to explore the genetic affinities of the Romani groups living in Europe in a broader scope. The 17q21.31 genomic region was characterized

"In Sweden we shake hands" - but are we really?

Motivated by a recent controversy over handshaking, a survey of the personal networks of young Swedes (n=2244) is used to describe greeting practices across social class, gender, immigrant background, and geographic location. While greeting practices in the sample are fairly uniform, there are also important differences. Handshaking is predominantly used by respondents with an immigrant background

Experimental studies of nitromethane flames and evaluation of kinetic mechanisms

The present work reports new experimental data for premixed flames of nitromethane, CH3NO2, at atmospheric pressure, and an evaluation of two contemporary kinetic mechanisms based on these new flame studies as well as previously published experimental data on laminar burning velocity and ignition. Flames of nitromethane + air at lean (ϕ = 0.8) and rich (ϕ = 1.2) conditions were stabilized on a fla

Thyroid function and breast cancer. Risk and clinical outcome in relation to thyroid hormones (free T3/T4), TSH, TPO-Antibodies and genetic variants.

Thyroid hormone level has been positively associatedwith breast cancer cell proliferation andtumour growth in experimental studies. However,previous observational studies have been contradictoryon the relationship between thyroidfunction and breast cancer. Age is a known riskfactor for breast cancer but its role as a prognosticfactor is less clear. The present thesis thereforeaimed to examine the

Comparing two methods to record maximal voluntary contractions and different electrode positions in recordings of forearm extensor muscle activity : Refining risk assessments for work-related wrist disorders

BACKGROUND: Wrist disorders are common in force demanding industrial repetitive work. Visual assessment of force demands have a low reliability, instead surface electromyography (EMG) may be used as part of a risk assessment for work-related wrist disorders. For normalization of EMG recordings, a power grip (hand grip) is often used as maximal voluntary contraction (MVC) of the forearm extensor mu

Impact of vitiation on a swirl-stabilized and premixed methane flame

Vitiation refers to the condition where the oxygen concentration in the air is reduced due to the mix of dilution gas. The vitiation effects on a premixed methane flame were investigated on a swirl-stabilized gas turbine model combustor under atmospheric pressure. The main purpose is to analyze the combustion stability and CO emission performance in vitiated air and compare the results with the fl

Time-Domain Generalized Transition Matrix for Transient Scattering Analysis of Arrays

Time-domain generalized transition matrix (TD-GTM) based on the time-domain integral equations (TDIEs) is implemented in this letter. The TD-GTM is established on the reference Huygens surface that encloses the object, using the impulse responses obtained by the marching-on-in-time (MOT) solutions. The TD-GTM fulfills the domain decomposition of TDIEs naturally and flexibly. It allows us to analyz