Sökresultat

An increase of the magnetic moment in superconductor/ferromagnet (S/F) bilayers V(40 nm)/F (, Co(3 nm), Ni(3 nm)) was observed using SQUID magnetometry upon cooling below the superconducting transition temperature T C in magnetic fields of 10 Oe to 50 Oe applied parallel to the sample surface. A similar increase, often called the paramagnetic Meissner effect (PME), was observed before in various s

Several recent studies of solar twins in the solar neighbourhood have shown a tight correlation between various elemental abundances and age, in particular [Y/Mg]. If this relation is real and valid for other types of stars as well as elsewhere in the Galaxy, it would provide a very powerful tool to derive ages of stars without the need to resort to determining their masses (evolutionary stage) ve

Biorefining of lignocellulosic biomass into biofuels and chemicals can help replace fossil resources and decrease anthropogenic greenhouse gas emissions. This thesis is focused on the effects of mixing on the enzymatic hydrolysis of pretreated biomass. Two different types of biomass were studied: softwood (Norway spruce and Scots pine), and the energy grass giant reed. Before enzymatic hydrolysis,

The performance of COATEST® APC® Resistance on different coagulation instruments has been further evaluated through analysis of plasma from 100 blood donors on KC 10, ST 4, ACL 300R, Electra 900 and Thrombolyzer. The electromechanical instruments KC-10 and ST 4 showed a lower response to APC than the turbidimetric or photometric instruments with median APC ratios of 2.7 and 2.8 for the two former

The Nordic Power Exchange (Nord Pool), the first multinational exchange for electricity trading, has existed since January 1996. Spot and futures contracts are traded on this exchange and its typical characteristics are very high volatilities as well as non-normally distributed returns. This article looks at electricity futures and how they can be used for short-term hedging of positions taken in

Mongolia, known as the Land of the Nomads is one of the last few countries where a significant portion of the population lives as nomadic herders. Since the Soviet Era and past the democratization of the country, the once nomadic herders are seen moving from the steppes to the major urban centers. This study examines if the influx of mining operations have a major hand in the changing of the nomad

In 2003, the Kimberley Process, a public-private partnership gathering governments, the diamond industry and several civil society organizations, entered into force. This international scheme, aiming at fighting against conflict diamonds, imposed export bans on diamonds from the Marange Fields in the Eastern part of Zimbabwe and from the Central African Republic. Indeed, evidence of violations of

Carbetocin is an uncharged cyclic therapeutic peptide with a tendency to aggregate in solution. Aggregation is undesirable since it, for example, can lead to loss of pharmaceutical effects. To gain a better understanding of peptide aggregation, along with a potential to develop better drug formulations, aggregation of carbetocin was studied. In focus were soluble aggregates in contrast to phase-se

Soot is a known contributor to climate change due to its strong light absorption possibility. It has been shown that adding alkali salts during the soot formation reduces its soot absorption ability, and thus reduces its impacts, but the exact mechanics are not fully understood. This thesis aims to get a better understanding of the effects that salts have on soot. The salts used were sodium chlori

The time dependent Maxwell system is supplemented with the constitutive relations of linear bianisotropc media and is treated as a neutral integro-differential equation in a Hilbert space. By using the theory of abstract Volterra equations and strongly continuous semigroups we obtain general well-posedness results for the corresponding mathematical problem.

The up-converting ZrO2:Yb3+,E3+ nanomaterials were prepared with the combustion and sal-gel methods. The structure of the materials was cubic except for the minor monoclinic and tetragonal impurities associated with the use of the sal-gel method. The XANES results revealed only the trivalent form for both the Yb and Er dopants. The distance distributions calculated from EXAFS confirm that Er3+ and

Popular Abstract in Arabic Vårt immunförsvar är fantastiskt. Dagligen exponeras vi för bakterier, virus och andra sjukdomsalstrande mikroorganismer och i allra flesta fall besegrar vårt immunförsvar detta hot utan problem. I sällsynta fall uppstår det dock en situation då bakterier lyckas undvika vårt initiala immunförsvar, sprids i kroppen och orsakar blodförgiftning (sepsis). Vid detta tillståndSepsis is a heterogeneous, dynamic, and complex syndrome caused by interaction between the host and the invading pathogen. It is associated with an overwhelmingly dysregulated immune response, and also immunosuppression. In spite of our improved understanding of the underlying molecular pathology, sepsis still remains a common cause of morbidity and mortality worldwide. This is reflected in the un

The increased possibilities for geographical separation of the production process have given rise to a growing interest for trade in intermediate goods in the international trade literature. Thanks to trade in parts and components, but also in services and other immaterial products, developing countries have been able to enter the global trade scene to a greater extent than before. This paper anal

While discussing the possibility of investigating the polysemy of an English profanity as the topic for this essay, Dylan Glynn, who is supervising this work, pointed to an (albeit old) edition of an Oxford English Dictionary resting on a shelf in his office in order to look up the definition[s] of the lexeme fuck. However, the entry was nowhere to be found, and this only added to the interest of

Following Kosovo’s issuance of a unilateral declaration of independence in 2008, the UN General Assembly requested the International Court of Justice to pronounce itself on the accordance with international law of the declaration of independence. The Court’s answer to that request was that the declaration of independence was not in violation of international law. When the Court rephrased the quest

In the second episode of the second season Nic and Rebecca invite Diane Feuillet to the microphone.  Diane is a researcher here at Lund Observatory working on galactic archaeology using stellar abundances, ages and kinematics. In this second season of the Meridian we are also bringing you some field reporting from the Nordic Optical Telescope on La Palma, where a team of astronomers are trying to

Recently, uropathogenic Escherichia coli were shown to express a virulence factor that specifically inhibits Toll-like receptor (TLR) signaling. The TIR-domain protein C (TcpC), has high homology with the TIR (Toll Interleukin Receptor) domains of innate immune signaling molecules such as TLR4, TRIF, TRAM and MyD88. By binding to these domains, TcpC prevents TIR homodimerization and inhibits innat

The deadly violence and ethnic conflicts which defined the 1990s period emphasized the need for an effective and viable approach to peacebuilding that shifted from mere containment to strategies that fostered the tenets of a sustainable peace. Nevertheless, the peace process can, and is, often hindered by actors who seek to undermine it for a myriad of reasons. This essay, aims to analyze how spoi