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Individual consistency in bird migration

Slight differences, which appear in the individual animals of the same species and population have been recognised and appreciated ever since Darwin. These consistent intra-specific differences in animals have been considered very important because they are often inherited, and thus, provide the basic material for evolution to act on. This applies also to behavioural characteristics, and thus, to

Zero Magic : Shifting the Valuation Convention

Zero Magic is a trick for the financial markets, which has the capacity to undermine the perceived value of a publicly traded company and profit from this. Short selling is a way of profiting from loss: Making money if and when a target company loses in value. It is a fundamental market activity that goes as far back as the first stock, yet to this day little is publicly known about the strategie

Influence of compound lean on an industrial steam turbine stage

Compound lean implemented on stator of an industrial steam turbine stage in order to reduce secondary losses are discussed. Baseline stator is a prismatic vane with aspect ratio of unity. Compound lean stator blade is designed by shearing the airfoil sections in tangential direction. Modifications are analyzed numerically using commercial code CFX. Three blade rows i.e. one complete stage with a d

Heat transfer in a borehole heat exchanger: Frequency domain modeling

This paper proposes a new frequency domain method to model the heat transfer between the injected/extracted heat and the temperature of the fluid exiting a borehole heat exchanger. The method is based on in situ measurements and focuses particularly on the short-term borehole heat transfer. It uses a rational function of the Warburg variable in the Laplace domain to model the borehole heat transfe

Purification and partial characterization of rat liver soluble catechol- O-methyltransferase

The rat liver soluble catechol-O-methyltransferase (EC 2.1.1.6.) has been purified utilizing a combination of conventional chromatography and HPLC. The purified enzyme has a molecular mass of 25 kDa, a pI of 5.1, and exists in two forms which differ in the nature of their intramolecular disulfide bonds. This difference causes these two protein forms to behave differently in reversed phase chromato

Suppression of growth defects of α-amylase secreting Escherichia coli by signal sequence fusion

Two fusions of the Bacillus stearothermophilus α-amylase gene (amyS) with lacpoZ′ were constructed. The first, being a transcriptional fusion, placed amyS directly under lac promoter control eliminating interference by the endogenous promoter. IPTG induction of amyS transcription in this construction resulted in liberation of periplasmic proteins and eventually cell lysis. The other fusion replace

Fighting infectious disease: Evidence from Sweden 1870-1940

Even more than in developing countries today, public health strategies to fight infectious disease in the past focused on the prevention of new infections by stopping their spread. These strategies were motivated by new insights into the causes of disease and the modes of transmission in the mid-nineteenth century. By combining longitudinal individual-level data on 17,000 children in a rural/semi-

Strategies and network effects in an interactive network context

This paper adopts the industrial marketing approach to investigate how companies strategize in networks, and to link network strategies to different effects. Based on a case study from the optical recording media industry, the paper finds five types of strategies: complementary, shared, copying, company-rooted, and challenging. Effects indicate how the focal company's strategies triggered reaction

A receive/transmit calibration technique based on mutual coupling for massive MIMO base stations

This paper presents a calibration technique for massive MIMO base stations, where the frequency responses of the transmit and/or receive analog front-ends are individually estimated and compensated for. Calibration is achieved by a first-round of channel sounding between base station antennas, followed by post-processing and a compensation stage. The proposed technique is general in the sense that

Extracellular group A Streptococcus induces keratinocyte apoptosis by dysregulating calcium signalling

Group A Streptococcus (GAS) colonizes the oropharynx and damaged skin. To cause local infection or severe invasive syndromes the bacteria must gain access into deeper tissues. Host cell death may facilitate this process. GAS internalization has been identified to induce apoptosis. We now report an alternate mechanism of GAS-mediated apoptosis of primary human keratinocytes, initiated by extracellu

Recognition and adult education : an incongruent opportunity

Building on narratives of students in adult education in Sweden, where the majority of the students are young adults, this paper argues that adult education has both negative and positive aspects in helping individuals to be recognised as valuable. Students, often part of the precariat class, have not always been able to survive in the job market and have a history of failing in upper secondary sc

Vibration insulation of footbridges so as to reduce human discomfort

Low frequency vibrations in footbridges is a cause of annoyance for pedestrians crossing the bridge. Bagers bro, a footbridge built in Malmö (Sweden) had several constraints in the physical design that caused the first eigenmode of the bridge to be at 1.8Hz which is a severe problem for pedestrians. Therefore the bridge was fitted with tuned mass dampers to mitigate the vibration problem. To evalu

Disturbance Management in a DC Grid using a Hierarchical Control Structure

DC grids will play a key role in the future, interconnecting generation and load centers as well as energy markets. Large multi-terminal VSC-HVDC systems of high capacity will require automated coordination for several operation scenarios especially when operating under disturbances. With this in mind, and considering the dynamics of a DC system, communication loss events are considered severe dis

Case mix adjustment of health outcomes, resource use and process indicators in childbirth care : A register-based study

Background: Unwarranted variation in care practice and outcomes has gained attention and inter-hospital comparisons are increasingly being used to highlight and understand differences between hospitals. Adjustment for case mix is a prerequisite for meaningful comparisons between hospitals with different patient populations. The objective of this study was to identify and quantify maternal characte