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It is shown how the deactivation of a diesel SCR (Selective Catalytic Reduction) catalyst by compounds in the exhaust gases influences the kinetics of the catalyst. Results are given for the fresh (4.56 % V2O5/TiO2) catalyst and the ones used in the rig for 890 h and 2299 h. The reactions of 700 ppm NH3 and 2 % O2 in Helium yielded N2, N2O, and NO at increasing temperatures. Simulations were perfo
In this work, we report on the efficient removal of heavy metal ions with nanostructured lithium, sodium and potassium titanates from simulated wastewater. The titanates were obtained via a fast, easy and cost effective process based on extraction of sulfate ions from the crystals of titanyl sulfate and their replacement with hydroxyl groups of NaOH, LiOH and KOH solutions leaving the Ti-O framewo
Under illumination, the photoluminescence of a mixed-halide perovskite such as MAPb(I1-xBrx)3 is known to undergo a significant intensity enhancement while spectrally shifting to lower energies. The evolution of low energy photoluminescence is attributed to the formation of iodide rich domains due to phase segregation. This process is detrimental for optoelectronic devices however the mechanism is
Dynamic processes in catalysis are gaining increased attention and could very well be one of the next frontiers in surface science. One way to study such processes is to induce chemical changes on the surface for example by periodically adjusting the (electro)chemical potential in situ and identify the resulting spectral changes. Often this is referred to as Modulation Excitation Spectroscopy (MES
Recent technologies of district heating and cooling (DHC) systems integrate renewable energy sources and connect multiple heat producers and consumers to the same network. The resulting interactions may therefore cause the fluid in the pipe, or the energy carried by the system, to flow in both directions. This article presents a newly developed analytical method for evaluating the hydraulic states
The field of (im)politeness studies has been steadily growing and developing but the role of conventionality and the type of semiotic system (e.g., language vs. gesture) for impoliteness perception has not been sufficiently explored. We used a cognitive-semiotic framework combining a reaction-time experiment and in-depth interviews with sixty participants to explore how Russian and Swedish native
Neuronal protein synthesis is severely depressed following stress such as heat-shock, hypoxia, and hypoglycemia. Following reversible cerebral ischemia, protein synthesis is transiently inhibited in ischemia-resistant areas, but persistently depressed in vulnerable brain regions. Eukaryotic initiation factor 2 (elF-2) activity, that is, the formation of the ternary complex elF-2 · GTP · initiator
This study examines the characteristics and nature of rumor via mobile communication in contemporary China. By focusing on six concrete case studies with 50+ in-depth interviews, this study observes that mobile phone-mediated rumor has evolved into a special form of popular resistance at the grassroots level. The low-cost and user-friendly mobile device lowers the average protest threshold, creati
To study the active sites of dinuclear metallohydrolases new metal complexes that model these sites both in structure and function have been synthesized using two new phenol based dinucleating ligands, 2-(N-isopropyl-N-((2-pyridyl)methyl)aminomethyl)-6-(N-(carboxylmethyl)-N-((2-pyridyl)methyl)aminomethyl)-4-methylphenol (IPCPMP) and 2,6-Bis[N-(N-(carboxymethyl)-N-(pyridylmethyl)amine)methyl]-4-met
Background: Exertional breathlessness is a cardinal symptom of cardiorespiratory disease. Research Question: How does breathlessness abnormality, graded using normative reference equations during cardiopulmonary exercise testing (CPET), relate to self-reported and physiologic responses in people with chronic airflow limitation (CAL)? Study Design and Methods: An analysis was done of people aged ≥
The Japanese economy has since the beginning of the 1990’s suffered from a prolonged period of economic stagnation. Known as the Lost Decade, but extending its influence well into the 2000’s and beyond, many attempts has been made to reverse the stagnation. The latest of these has come to be known as Abenomics and is headed by incumbent Prime Minister Shinzō Abe. In this essay we investigate wheth
Microsoft Word - sjostrom_stefan_thesis.doc Forestry Certification: Why it is not leading to sustainable forest management By Stefan Sjöström November, 2003 A thesis submitted in fulfillment of the requirements of the Degree of Master of Science LUMES, Lund University, Sweden Stefan Sjöström Supervisor: Trollebergsvägen 22A Professor Bengt Nihlgård 222 29 Lund Department of Ecology Sweden Sölvegat
https://www.lumes.lu.se/sites/lumes.lu.se/files/sjostrom_stefan.pdf - 2026-07-16
