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A selective and sensitive reversed-phase high-performance liquid chromatographic method for simultaneous analysis of diltiazem and its five metabolites known to occur in man is presented. Different C18 columns are compared. The influences of organic co-solvent, pH, ionic strength and the addition of various amines are studied. The use of trans-diltiazem as internal standard is advocated. UV detect
From studies on prophylaxis against experimental streptococcal endocarditis using amoxycillin in a single dose, it has been deduced that serum concentrations above 0.12 mg/l should be maintained for at least 10 h after antibiotic administration. Since concentrations above this level are reported to occur following an oral dose of 3 g of amoxycillin, this doses for prophylaxis has become widely acc
This thesis is an inquiry into musical interpretation and performance. It builds on my practice as a professional baroque violinist. Qualitative analysis of the video documentation of my individual practise, rehearsals, and concert performances is the core method of the project. Here, the roles of a musical score, of performance practice, instruments, and the human body in musical creativity are e
OBJECTIVE: Recent studies suggest that administration of O2 in patients with acute myocardial infarction may have negative effects. With the use of cardiac MRI (CMR), we evaluated the effects of supplemental O2 in patients with ST elevation myocardial infarction (STEMI) accepted for acute percutaneous coronary intervention (PCI).MATERIALS AND METHODS: This study was a randomized-controlled trial c
Nowadays, the main two issues of heating ventilation and air conditioning (HVAC) are refrigerant alternative and system efficiency improvement. As a safe and environmental protective refrigerant, CO2 has drawn a lot of attention these years. The improvement on its transcritical cycle efficiency has always been the study hotspot. On the basis of the traditional cycle system, this paper adds the int
Purpose: “Scale purification” – the process of eliminating items from multi-item scales – is widespread in empirical research, but studies that critically examine the implications of this process are scarce. The goals of this research are threefold: to discuss the methodological underpinning of scale purification, to critically analyze the current state of scale purification in supply chain manage
The quantum yield is a critically important parameter in the development of lanthanide-based upconverting nanoparticles (UCNPs) for use as novel contrast agents in biological imaging and optical reporters in assays. The present work focuses on the influence of the beam profile in measuring the quantum yield (φ) of nonscattering dispersions of nonlinear upconverting probes, by establishing a relati
In this paper we analyze the motives, functioning, and results of vocational education and training in two companies in the shipbuilding industry in two different countries (Japan and Sweden) in different time periods. The institutional framework differs substantially in the two cases and, partly as a consequence, the responses to challenges in securing an adequate supply often varied. However, ou
Under 1990-talet kom ordet kulturarv att användas för att beskriva samhällets förmåga, vilja och praktiker för att bevara och använda företeelser ur det förflutna. I Sverige, liksom i Europa, genomfördes under denna tid flera politiskt initierade satsningar och projekt som handlade om både hur kulturarv kunde tjäna samhället och vad som borde ingå i kategorin kulturarv.Boken handlar om dessa proje
Björn Wahlroos storljuger när han hävdar att skattebetalarna räddade Nordbanken, inte Nordea. Men oron över flytten är överdriven. Istället kan den innebära att det osunda starka inflytandet som de största bankerna har över svensk politik är på väg att luckras upp. Det skriver Anders Ögren, docent i ekonomisk historia.
Objective: To investigate the possible disease-association and pathogenic mechanisms of heterozygous PINK1 mutations from a genetic, functional, and structural perspective. Background: It has been postulated that heterozygous mutations in recessive PD genes may increase disease risk. In particular, the PINK1 p.G411S mutation has been reported in families with dominant inheritance patterns, suggest
Corrosion of steel reinforcement is a large and increasing problem for reinforced concrete structures. Simple and reliable assessment methods are required to use the full capacity of existing infrastructure. In this paper, a reliable engineering assessment method is outlined. A model for anchorage has been developed and verified against a large database of bond tests. Also the influence of corrosi
Recension av avhandlingen “Den ofrivilla lyssnaren” av Olle StenbäckReview of the dissertation “Den ofrivilla lyssnaren” by Olle Stenbäck
Teachers’ perceptions of organizational communication were assessed using a tailored questionnaire, sampling 401 primary and lower secondary school teachers from two municipalities in Sweden. Overall, the teachers were satisfied with the workplace communication climate, the communication structure, and collegial communication; however, a lack of time for communication was reported. Using a job dem
Modern computing systems are often formed by multiple components that interact with each other through the use of shared resources (e.g., CPU, network bandwidth, storage). In this paper, we consider a representative scenario of one such system in the context of an Internet of Things application. The system consists of a network of self-adaptive cameras that share a communication channel, transmit
New nanoarchitectures can be built from polycyclic aromatic hydrocarbons (PAHs) by exploiting the capability of some metal surfaces for inducing cyclodehydrogenation reactions. This bottom-up approach allows the formation of nanostructures with a different dimensionality from the same precursor as a consequence of the diffusion and coupling of the PAHs adsorbed on the surface. In this work we pres
