The Role of Energy Quality in Shaping Long-Term Energy Intensity in Europe

On the European aggregate level there is an inverted-U curve for long-term energy intensity. In the 19th century aggregate European energy intensity rose, followed by a declining trend during the 20th century. This article discusses the possible explanations for the declining trend during the 20th century and explores the role of energy quality as expressed in energy prices. For the first time a complete set of national energy retail prices covering two centuries has been constructed and used for Britain, while the energy price data previously available for Sweden until 2000 has been updated to 2009. This allows us to explore the role of energy quality in shaping long-term energy intensity. We find no relation between energy quality and energy intensity in the 19th century, while energy quality may have stimulated the declining energy intensity in Europe over the 20th century, but is not the sole or even main reason for the decline. Rather, increased economic efficiency in the use of energy services seems to have been the main driver for the decline after 1970, presumably driven by the information and communication technology

Cryogenic Mechanical Alloying of Poly (ether ether ketone) - Polycarbonate Composite Powders for Selective Laser Sintering

Mechanical alloying is a solid state processing technique traditionally used in the metallurgical industry to extend solubility limits in alloy systems. Mechanical alloying can also be used to blend polymer systems at ambient or cryogenic temperatures. In this work, cryogenic mechanical alloying was employed to create composite powders of Poly (ether ether ketone) (PEEK) - Polycarbonate (PC) for use in selective laser sintering applications. The microstructural development of the PEEK-PC system that occurs during laser sintering and the effects of this microstructure on mechanical properties of the laser sintered parts was investigated.Mechanical Engineerin

Electrification and energy productivity

Efficiency in energy use is crucial for sustainable development. We use cointegration analyses to investigate the effect of electricity on energy productivity in Swedish industry 1930-1990. Electricity augmented energy productivity in those industrial branches that used electricity for multiple purposes. This productivity effect goes beyond “book-keeping effects”, i. e. it is not only the result of electricity being produced in one sector (taking the energy transformation losses) and consumed in another (receiving the benefits).Energy; electricity; sustainable development; productivity

The Swedish Paradox arises in Fast-Growing Sectors

The aim of this paper is to examine whether the previously observed gap between growth of R&D and economic performance, known as the ‘Swedish paradox’, is a general phenomenon across all sectors of the economy, or only occurs in specific industry segments. The dataset used for the analysis covers nearly the entire Swedish economy 1985-1998, divided into five broad sectors: Fast-growing industries, Slow-growing industries, Industrial outphasers, Fast- growing producer services and Other services. The growth of R&D, value added and research productivity is compared for these sectors and the largest gap between R&D and value added is located to the fast growing sectors of the economy. The Swedish paradox is therefore not necessarily a sign of weakness or deficiency of the innovation system, but rather indicates that long-term growth requires large investments in knowledge-building resources.Swedish paradox; sectors; R&D; research productivity; economic growth.

Development blocks and the second industrial revolution – Sweden 1900-1970

The paper explores development blocks around electrification at a 14 sector level in the Swedish economy 1900-1974. We suggest that long-run cointegration relations in combination with mutually Granger-causing short-run effects form a development block. One block centred on electricity that comprises five more sectors is found. In addition we demonstrate that increasing its electricity share makes a sector grow faster, and by testing the electricity share versus the growth rates we find another development block around electricity, party overlapping the first one.development block; electricity; GPT; second industrial revolution

Struktura i svojstva titana za zubne umetke (implantate)

This paper describes manufacture of nano-structural titanium, its structure and properties. Nano-titanium has higher specific strength properties than ordinary (coarse-grained) titanium. Nano-titanium was produced by the equal-channel angular pressing (ETAP) process. The research it self was focused on physical base of strengthening and softening processes and developments occurring at the grain boundaries during the ECAP process at half-hot temperature. Strength of nano-titanium varies around 960 MPa, grain size around 300 nm.Rad opisuje proizvodnju nanostrukturnog titana te njegovu strukturu i svojstva. Nanotitan se odlikuje višom čvrstoćom od običnog, krupnozrnatog, i proizveden je kanalno kutnim prešanjem (KKP). Samo istraživanje bilo je usmjereno na fizikalne osnove procesa očvršćavanja i omekšavanja na granicama zrna tijekom procesa kanalno kutnim prešanjem (KKP) na srednjim temperaturama. Čvrstoća nanotitana varira oko 960 MPa, a veličina zrna je oko 300 nm

Effects of naturopathic medicines on Multiplate and ROTEM: a prospective experimental pilot study in healthy volunteers

Of patients undergoing surgery, 22 to 57 % have been reported to be using naturopathic medicines. Several of these medicines have been reported to increase bleeding or enhance the effect of other drugs that increase bleeding. The Swedish Medical Products Agency recommends cessation of the use of the naturopathic medicines echinacea, fish oil, ginkgo biloba, ginseng, St. John's wort, valeriana and garlic 2 weeks before surgery. The aim of this pilot study was to examine the effects of these 7 naturopathic medicines in healthy humans by utilising multiple electrode aggregometer (Multiplate) and viscoelastic rotational thromboelastometer (ROTEM) to obtain data for sample size calculation before a larger trial

Trans-boundary air pollution in Windsor, Ontario (Canada)

AbstractWindsor (Ontario) is located on the Canada-US border. Some believe that the heavy industrial facilities such as power generation and automobile production in the neighbouring regions of US greatly affect Windsor's air quality. This study investigates the frequency of air mass exchange between Windsor and the neighbouring US states. Two-day (48-hr) and one-day (24-hr) back trajectories were run using the Hybrid Single-Particle Langrangian Integrated Trajectory (HYSPLIT) model. Windsor Airport (42.27o N, 82.96o W) was the starting point. The model resolution was three days a week. Two calendar years, 2008 and 2009, were modeled thus seasonal and inter-annual variations could be observed. It was found that the fraction of air mass parallel to the border is small. When considering the 48-hr trajectories on an annual basis, 53-55% of air masses arriving Windsor were from the US, whereas the 24-hr trajectories showed a much higher percentage (81-82%). The inter-annual variability between 2008 and 2009 was small. In both years, winter had higher frequency of US to Canada transport than Canada to US. In the other three seasons (spring, summer and fall), one year had more frequent US to Canada transport while the other year had less. It was concluded that overall the US-Canada transport had a higher frequency. However, this alone is inadequate to support the claim of air masses coming from US greatly affect Windsor air quality. Further analyses using state and province wide emission densities and ambient concentrations were conducted for a two-week period during each year to quantitatively assess the trans-boundary movement of air pollutants. Statistical analyses showed no consistent, significant correlations between the travel path of the air mass prior to arrival and the measured NO2 or PM2.5 concentrations at the receptor

Reading queer subtexts in children’s literature

The purpose of this project is to explore and to challenge heteronormative assumptions regarding childhood and adolescence. I will show how these assumptions affect the literature published and made available to young readers, and how, often, overtly queer texts are not available for young readers. Such omissions leave young readers, especially those with lesbian, gay, bisexual, and/or transgendered (LGBT) identities, to find depictions of queerness in subtexts underlying seemingly “straight” texts. While these queer subtexts can be recognizable to readers through the use of culturally and historically significant markers that are understood to represent queerness, even a text with a widely recognized queer subtext does not preclude straight readings. Similarly, a queer subtext can exist solely for a reader with no intentional work done on the part of the creators. Queer subtexts, ultimately, work in subtle ways to subvert heteronormative assumptions and, in the process, create recognizable representations of queerness