Search results

The role of the fracture process region during fast fracture is discussed. Reviewed experiments on modern pressure vessel steels show that already at crack tip speeds of one or two hundred mls fracture processes are dominantly brittle. Modelling of the process region is discussed in the light of asymptotic elastic plastic fields and process region autonomy. It is suggested that a fraction of the cThe role of the fracture process region during fast fracture is discussed. Reviewed experiments on modern pressure vessel steels show that already at crack tip speeds of one or two hundred mls fracture processes are dominantly brittle. Modelling of the process region is discussed in the light of asymptotic elastic plastic fields and process region autonomy. It is suggested that a fraction of the c

Internal combustion engine (ICE) fuel efficiency is a balance between good indicated efficiency and mechanical efficiency. High indicated efficiency is reached with a very diluted air/fuel-mixture and high load resulting in high peak cylinder pressure (PCP). On the other hand, high mechanical efficiency is obtained with very low peak cylinder pressure as the piston rings and bearings can be made wInternal combustion engine (ICE) fuel efficiency is a balance between good indicated efficiency and mechanical efficiency. High indicated efficiency is reached with a very diluted air/fuel-mixture and high load resulting in high peak cylinder pressure (PCP). On the other hand, high mechanical efficiency is obtained with very low peak cylinder pressure as the piston rings and bearings can be made w

In transplants of embryonic striatal cells placed into the excitotoxically lesioned rat striatum (a model of Huntington's disease), as many as 60 to 90% of the grafted cells are believed to die. Caspase activation is part of a cascade of events that can lead to apoptosis. We investigated the effect of the caspase inhibitor acetyl-tyrosinyl-valyl-alanyl-aspartyl-chloromethylketone (Ac-YVAD-cmk) on In transplants of embryonic striatal cells placed into the excitotoxically lesioned rat striatum (a model of Huntington's disease), as many as 60 to 90% of the grafted cells are believed to die. Caspase activation is part of a cascade of events that can lead to apoptosis. We investigated the effect of the caspase inhibitor acetyl-tyrosinyl-valyl-alanyl-aspartyl-chloromethylketone (Ac-YVAD-cmk) on

‘Modern astronomy’ was introduced to Siam (present-day Thailand) (Siam officially changed its name to Thailand in 1939) when the Belgian Jesuit missionary-astronomer Father Antoine Thomas carried out stellar and lunar eclipse observations during 1681 and 1682 in order to determine the latitude and longitude of Ayutthaya. Three years later a contingent of French Jesuit missionary astronomers observ

Biotechnology and genetic engineering raise a number of new ethical problems. Consequently, over the past 15 years, several European countries, including the Nordic countries, have passed new laws in an attempt to deal with the ethical problems posed by biotechnology. These developments raise the question of how to formulate legislation to regulate both the technical and ethical aspects of biotech

This thesis deals with local government bodies, especially municipalities, as parties to contracts. It primarily focuses on general problems relating to the competence of a municipality to enter into contracts, and the subsequent legal effects, in light ofthe principles and rules ofpublic and private law. When analysing a contract to which a governmental body is a party, it is necessary to conside

Fuel economy and emissions are the two central parameters in heavy duty engines; most of the existing heavy duty engines are run with diesel. The overall efficiency of diesel engines is good however they suffer from high levels of emissions mainly NOX and soot. Using alternative fuels like Natural-Gas has shown to be a good way to reduce emissions level. Diesel engines can be easily converted to N

Den här skriften handlar om ljus och ljusets betydelse för oss människor. Tolv forskare med vitt skilda bakgrunder samlas och diskuterar frågor som skrider över gränserna. Vad är ljus egentligen? Hur kan vi förstå ljus? Hur påverkar det oss? På vilket sätt kan vi använda oss av det? Vilka tekniska möjligheter har vi att skapa och styra olika sorters ljus? Vilka möjligheter ger det oss inför fram

Abstract in Undetermined An alternative to the standard endurance/perdurance accounts of persistence has recently been developed: the stage theory (Sider, 2001; Hawley, 2001). According to this theory, a persisting object is identical with an instantaneous stage (temporal part). On the basis of Leibniz’s Law, I argue that stage theorists either have to deny the alleged identity (i.e. give up their

The role of hybridization in evolution has been debated for more than a century regarding bryophytes (mosses, liverworts, and hornworts) as well as most other organisms. Bryophytes have haplodiplontic life cycles with a dominant haploid generation. Hybridization in bryophytes involves fusion of gametes produced by haploid parental gametophytes of different species. The hybrid is thus the short-livThe role of hybridization in evolution has been debated for more than a century regarding bryophytes (mosses, liverworts, and hornworts) as well as most other organisms. Bryophytes have haplodiplontic life cycles with a dominant haploid generation. Hybridization in bryophytes involves fusion of gametes produced by haploid parental gametophytes of different species. The hybrid is thus the short-liv

This chapter starts with the question of how damages for violation through crime are determined by law. Compensation for criminal injuries is the predominant type of non-pecuniary damages in Swedish tort law. Yet, a fundamental uncertainty exists regarding computation of damages and the legal meaning of ‘violation’. The general consensus in the legal profession is that norms for computation of damThis chapter starts with the question of how damages for violation through crime are determined by law. Compensation for criminal injuries is the predominant type of nonpecuniary damages in Swedish tort law. Yet, a fundamental uncertainty exists regarding computation of damages and the legal meaning of ‘violation’. The general consensus in the legal profession is that norms for computation of dama

Barn som upplever våld i hemmet har innan 2021 inte haft ett straffrättsligt skydd i svensk lag. Det finns studier som visar att var tionde barn i Sverige någon gång har upplevt våld mellan närstående. Situationen där vuxna utövar våld i vad som ska vara barnets tryggaste zon, kan ge förödande konsekvenser, både fysiskt som psykiskt. Den 14 juni 2018 beslutade regeringen att tillsätta en särskildBefore 2021, children who experience violence in their homes have not had criminal protection in Swedish law. There are studies that show that every tenth child in Sweden has ever experienced violence between relatives. The situation where adults use violence, in what should be the child's safest zone, can have devastating consequences, both physically and mentally. On 14 June 2018, the govern

I följande undersökning ämnar vi titta närmare på problematiken kring konfliktlinjerna i Spanien som rör frågan om självständighet. De rikare regionerna i Spanien driver en önskan om mer autonomi och i de allvarligaste fallen; påtryckningar om självständighet. Vi undersöker vilka effekter en övergång till federalism skulle få för Spanien. Vår empiri består av kurslitteratur och artiklar ur natione

Kan kompensationsprojekt rädda Madagaskars regnskog? Några av de globala utmaningar vi står inför för en hållbar värld är klimatförändringar, fattigdom och utrotning av arter. FN har storskaliga projekt, sponsrade av världsbanken, där de försöker lösa flera problem samtidigt. Ett pilotprojekt sker i östra Madagaskars artrika regnskog, Corridor Ankeniheny Zahamena. Ett stort område av skogen har sClimate change, deforestation and poverty are big threats for today’s society. One way the United Nations has chosen to combat this is through a project named REDD+ (Reducing Emissions from Deforestation and Forest Degradation). In short, REDD+ allows countries to be compensated if they change their way of using the forest into methods more likely to conserve the ecosystem and eliminate or minimiz

Bergholm, H. 2014. Memory and life pattern: Identity of Forest Finns in three excavated settlements from the early modern period. From the 1580s until the mid 1600s the “Forest Finns” – stemming from the area Savolax in eastern Finland – colonized parts of central and north Sweden. There were several factors that caused this migration; war and overpopulation were two of those factors. The purpos

I provide evidence that firms send a negative signal on its non-repurchasing industry counterparts. This is consistent with competitive effects. These negative effects are common for mature firms and are sent by the largest repurchasing firm. The market attributes non-repurchasing mature firms as those ones, which do not maximize value for shareholders because managers have excess cash at their di