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The purpose of the numerical study was to investigate the influence of three different natural gas compositions on the combustion behaviour of an Advanced Environmental Vortex (AEV) burner. The flow conditions apply to the AEV burners installed in the Siemens gas turbine SGT-800. Numerical simulations were carried out using the software Chemkin 4. Ignition temperatures, adiabatic flame temper
Policing roles require specific work-related characteristics (WRCs) critical for effective performance. This study identifies key WRCs for various roles within the Swedish Police—patrol officers, criminal investigators, Special Weapons and Tactics (SWAT) Teams, police chiefs, and negotiators—by analyzing data from 425 active-duty officers (30% response rate). We use the Occupational Information Ne
The purpose of this study is to investigate the performance of traditional stop-loss rules and trailing stop-loss rules compared to the classic buy-and-hold strategy. The evaluation criteria of whether stop-loss strategies can deliver better results are defined as return and volatility. The study is conducted on daily equity returns data for stocks listed on the OMX Stockholm 30 Index during the t
Objectives: The aim of this study was to evaluate our experience with patients affected by ovarian carcinosarcoma. Patients and Methods: During a 16-year period, data on 13 patients with ovarian carcinosarcoma were collected. They were obtained from hospital charts and follow-up visits. Survival curves were estimated by the Kaplan-Meier method and compared using the log-rank test. All tests were t
Hydrogen is an element of fundamental importance for energy but hard to quantify in bulk materials. Neutron radiography was used to map . in situ loss of elemental hydrogen from beech tree wood samples during pyrolysis. The samples consisted of three wood cylinders (finished dowel or cut branch) of approximately 1 cm in length. The samples were pyrolyzed under vacuum in a furnace vessel that was p
This work used a low-cost wireless electroencephalography (EEG) headset to quantify the human response to different cognitive stress states on a single-trial basis. We used a Stroop-type color⁻word interference test to elicit mild stress responses in 18 subjects while recording scalp EEG. Signals recorded from thirteen scalp locations were analyzed using an algorithm that computes the root mean sq
The level of extracellular calcium has been demonstrated to regulate important physiological processes like cell growth and apoptosis. We demonstrate that in the bladder cancer cell line RT4, an increased extracellular calcium level induces apoptosis and that the HER1 receptor functions as a cell survival factor and delays apoptosis. After 12 h of calcium treatment (10 mM) apoptosis was detected i
Chemokines are important in the development and progression of tumors. We investigated the expression of CXCL14 and CXCL16 in colon cancer. Expression of mRNA was assessed in primary tumors and lymph nodes and CXCL16 mRNA levels were correlated to patient’s survival. Protein expression was investigated by two-color immunofluorescence and immunomorphometry. CXCL14 and CXCL16 mRNA levels and protein
10 min after intravenous injection of 32P-labelled chylomicrons 69% of the [32P]phosphatidylethanolamine, but only 34% of the [32P]phosphatidylcholine, was cleared from plasma. Over this time period the plasma phosphatidylethanolamine concentration that was increased after the chylomicron injection returned to normal, indicating that the rapid clearance of [32P]phosphatidylethanolamine was primari
Radioactive iodine is commonly used for the treatment of different thyroid conditions since the 1940s. The EANM has developed a standard pre-therapeutic procedure to estimate patient specific thyroid uptake at treatment of benign thyroid diseases. The procedure which models the time dependent fractional thyroid uptake is based on a two-compartment fitting system, one representing the thyroid and t
Introduction: The presented study aimed to investigate whether a mechanical chest compression piston device with a suction cup assisting chest recoil could impact the hemodynamic status when compared to a bare piston during cardiopulmonary resuscitation.Methods: 16 piglets were anesthetized and randomized into 2 groups. After 3 minutes of induced ventricular fibrillation, a LUCAS 3 device was used
Våld i samband med fotbollsmatcher har länge varit ett problem i Sverige. Den 30 mars 2014 nådde det sin kulmen när en Djurgårdssupporter misshandlades till döds i samband med en match mot Helsingborgs IF, vilket blev starten för en kris som drabbade både Helsingborgs IF och dess supporterförening Kärnan. Studien, som fokuserar på medlemsorganisationers kriskommunikation och organisations-samarbet
Kan abborren stoppa den invasiva smörbultens framfart i Östersjön? Ett av de största hoten mot ett ekosystem är en invasion av nya arter, då de påverkar biodiversiteten, den redan etablerade dynamiken mellan arter och skapar högre konkurrens om föda och habitat. Östersjön är en unik miljö med hög variation av både temperatur och salthalt, vilket kan göra det svårt för arter att etablera sig vilkDuring the last decades the spread of the invasive species round goby, Neogobius melanostomus, has largely increased in the Baltic Sea affecting the ecosystem, biodiversity and species interactions. Round goby originates from the Caspian Sea and has most likely been introduced multiplied times via ships ballast water to different areas of the Baltic Sea. The establishment has had both negative and
This study analyzes the temporal evolution of the short-term P-wave morphological variability (PWMV) within the one-hour interval immediately preceding the onset of atrial fibrillation (AF) episodes. This PWMV is hypothesized to be an index of vulnerable atrial substrate, allowing to identify instability increases preceding the AF episode onset. We analyzed 32 ambulatory ECG recordings from subjec
3I/ATLAS is the third interstellar object discovered to date, following 1I/‘Oumuamua and 2I/Borisov. Its unusually high excess velocity and active cometary nature make it a key probe of the Galactic population of icy planetesimals. Understanding its origin requires its past trajectory through the Galaxy to be traced and the possible role of stellar encounters to be assessed, both as a potential or
At the End of the World Newsletter – 16 June 2025 This is the 10th newsletter for the At the End of the World research program, housed at Lund University. It is the second newsletter from our third year of activity. If you’re receiving this email, it’s because you’ve subscribed to our mailing list. Below, we’ll fill you in on some upcoming events and also what we've been up to since the last newsl
https://www.endoftheworld.lu.se/at-the-end-of-the-world-newsletter-16-june-2025/ - 2026-05-21
