1,045 research outputs found

    Method of Converting a Resource into a Product

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    The present invention is concerned in particular with the scheduling of maintenance actions such as washing events for a compressor of a gas turbine. An objective function including fuel/power price forecasts is evaluated/optimised in order to determine the advisability of a washing event. The cost function depends on a state vector comprising both Integer/Boolean and continuous state variables which are interconnected via a set of rules or constraints. Mixed Integer Programming (MIP) is a used for implementing the inventive procedure

    Control methods against bugs (Hemiptera; Heteroptera) in organic apple and pear production

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    True bugs (Hemiptera; Heteroptera) are important pests in fruit production in Norway. In organic fruit pro-duction they may damage up to 40% of the crop. Several of the Heteropteran species attacking apple and pear are polyphagous, with many other hostplants than pome fruit. In organic production few control meth-ods are available against bugs. In this study we have tried a cultural control method (mowing of ground-cover) as well as spray applications of various biological insecticides against bugs. Spray application of azadirachtin (NeemAzal), rape oil and garlic extract (Ecoguard) were tested. Results indicate that the effect of mowing groundcover inside the orchard is variable and small. Applying NeemAzal reduced the number of bugs and damage. Oil and Ecoguard showed little effect in this study, however further testing is needed. Results from the first two years of the study will be discussed in relation to both cultural and direct control methods against bugs

    Why Our Next President May Keep His or her Senate Seat: A Conjecture on the Constitution’s Incompatibility Clause

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    Heart diseases are common and significant contributors to worldwide mortality and morbidity. During recent years complement mediated inflammation has been shown to be an important player in a variety of heart diseases. Despite some negative results from clinical trials using complement inhibitors, emerging evidence points to an association between the complement system and heart diseases. Thus, complement seems to be important in coronary heart disease as well as in heart failure, where several studies underscore the prognostic importance of complement activation. Furthermore, patients with atrial fibrillation often share risk factors both with coronary heart disease and heart failure, and there is some evidence implicating complement activation in atrial fibrillation. Moreover, Chagas heart disease, a protozoal infection, is an important cause of heart failure in Latin America, and the complement system is crucial for the protozoa-host interaction. Thus, complement activation appears to be involved in the pathophysiology of a diverse range of cardiac conditions. Determination of the exact role of complement in the various heart diseases will hopefully help to identify patients that might benefit from therapeutic complement intervention

    A young man with acute dilated cardiomyopathy associated with methylphenidate

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    An 18-year-old obese man with a body mass index of 40, diagnosed with attention-deficit hyperactivity disorder and treated with methylphenidate (Concerta®) was acutely admitted to hospital with hypoxia and dyspnoea. On investigation signs of liver-, renal-, and heart-failure were found. Noradrenalin infusion was started. Echocardiography showed dilated left ventricle and an ejection fraction (EF) of 25%. Liver function improved, noradrenalin and dobutamine were tapered, but three days after admission a new echocardiography showed an EF of 10%. The patient was transferred to the National Hospital (Rikshospitalet, Oslo), where intensified treatment including intra aortic balloon pump (IABP) was instituted. Cardiac function improved, and 3 weeks later the IABP was disconnected. EF at this point was 15%. The patient was denied heart transplantation due to various cofactors. The investigation concluded with a probable relationship between his cardiomyopathy and the use of methylphenidate (Concerta)

    Establishing Vegetative Cover to Protect Roadside Soils in South Dakota

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    A vegetative cover has been the most practical protection against erosion of roadside soils. Since vegetation also has enhanced roads in safety and appearance, the establishment of a roadside cover has been a part of highway construction. Topsoil has greater organic matter content, tilth development, fertility level, and seed content. As a result, it has been used more successfully than subsoil to produce a vegetative cover and stabilize roadsides from erosion. Costs of salvaging and spreading topsoil make it desirable to seek ways of satisfactorily establishing a vegetative cover on subsoil materials along roadsides. Studies were conducted in 1962, ] 963 and 1964 for the South Dakota Department of Highways by South Dakota State University. Included were laboratory, greenhouse, and field examinations of several representative South Dakota soils in respect to management requirements for establishing satisfactory plant cover on disturbed areas

    Implementing the Minamata Convention on Mercury: Will China Deliver?

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    China has undertaken a major shift in its position on mercury as an environmental problem over the last decade and a half. It ratified the Minamata Convention (MC) in 2016 and by doing so has committed to implement the treaty objectives. This article asks: How do we explain China’s will and ability to implement its MC obligations? There is little systematic knowledge about the main factors underlying implementation of international mercury objectives in China, hence this article contributes new research on this important topic. We examine the implementation process, focusing on the coal sector and differentiate between indirect effects from other policies and direct efforts to implement obligations. We find that China has moved toward stricter regulation of mercury emissions and direct implementation of the Minamata Convention in the coal sector. However, our study shows that local implementation capacity needs improvement.Implementing the Minamata Convention on Mercury: Will China Deliver?acceptedVersio
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