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Respiration is a major trait shaping the biology of many environments. Cytochrome oxidase containing heme A (COX) is a common terminal oxidase in aerobic bacteria and is the only one in mammalian mitochondria. The synthesis of heme A is catalyzed by heme A synthase (CtaA/Cox15), an enzyme that most likely coevolved with COX. The evolutionary origin of COX in bacteria has remained unknown. Using ex
Detta examensarbete undersöker och jämför lönsamheten för två olika metoder för underhållsarbeten på järnväg i form av spårbyten utifrån ekonomiska och tidsmässiga aspekter. Dessa metoder är den traditionella traktormetoden och det avancerade spårbyteståget. Syftet med arbetet är att undersöka användningen av spårbyteståg och traditionella metoder vid underhållsarbeten på bana i Sverige samt när dThis thesis examines and compares the profitability of two different methods for railway maintenance work in the form of track renewal based on economic and time aspects. These methods are the tractor method and the advanced track renewal trains. The purpose of the thesis is to investigate the use of track renewal trains and tractor methods for track maintenance work in Sweden and when the former
In pursuit of sustainable development within the building industry, there is a shift towards design strategies that are energy efficient and environmentally friendly. The European Commission has a goal of becoming climate-neutral by 2050 and the United Nations has also developed Agenda 2030 to aid in the reduction of the environmental impact. The city of Malmö has also developed a local plan for a
The XAFS-DET work package of the European LEAPS-INNOV project is developing high-purity Germanium detectors for synchrotron applications requiring spectroscopic-grade response. The detectors integrate three key features: (1) newly designed monolithic Germanium sensors optimized to mitigate charge-sharing events, (2) an improved cooling and mechanical design structure supported by thermal simulatio
Introduction: Assessing work capacity and determining appropriate sick leave is a complex process. Despite the importance of fair and consistent assessments, evidence suggests that evaluations may vary. However, previous studies have been inconclusive and have mainly focused on whether sick leave should be recommended or not. The present study examined the medical reliability and consistency of ph
Non-representational and materialist theories have enabled geographers to understand subjectivity as something that is interwoven with intimate and dynamic spaces. While previous work has questioned the political efficacy of integrating subjectivity into the environment, this paper traces a ‘new’ problem to the philosophical naturalism of early non-representational work where the subject was const
The use of the home as a workplace has persisted throughout the world, challenging established notions of economic progress and resulting in home-based work being seen as an integral and lasting part of the capitalist organisation of production. Many different types of work are conducted in the home, including production, retail, and service activities. Home-based workers are a heterogeneous group
Popular Abstract in Swedish Syftet med den aktuella forskningen är att ge en bättre förståelse av förmaksflimmer, den vanligaste rytmrubbningen i hjärtat som drabbar så många som var tionde över 70 år. Mekanismerna för förmaksflimmer är långt ifrån kartlagda, vilket bland annat leder till att behandlingen är standardiserad istället för att den beror på de mekanismer som styr varje enskild patientsThis doctoral thesis is in the field of biomedical signal processing with focus on methods for the analysis of atrial fibrillation (AF). Paper I of the present thesis addresses the challenge of extracting spatial properties of AF from body surface signals. Different parameters are extracted to estimate the preferred direction of atrial activation and the complexity of the atrial activation pattern
One of the largest limitations of standard molecular-mechanics force fields is the neglect of intermolecular polarization. Several attempts to cure this problem have been made, but the results have not always been fully satisfactory. In this paper, we present a quantitative study of the fundamental approximations that underlie polarization models for classical force fields. The induced charge dens
This work presents a literature review and a questionnaire study with 62 participants aimed at providing recommendations on the design of a set of evacuation systems for road tunnels: 1) Traffic Information Sign (TIS) - message and size of the sign (large or small), colour scheme, and use of pictograms and/or flashing lights, 2) Emergency exit portal layout - colour scheme, 3) Acoustic systems - v
The present paper describes a rational analytical approach to a fire engineering design of load-bearing structures and partitions. The design method is permitted to be generally applied in Sweden, as one alternative, since about ten years. The method is directly based on the natural fire concept and strictly defined functional requirements and performance criteria . For facilitating the practical
The location of the peak pressure can serve as a control parameter to adjust ignition timing and optimize engine performance. The ionization sensor, an electrical probe for combustion diagnostics, can provide information about the peak pressure location. However, the reliability of such information is rather poor. In-cylinder gas flow at the electrodes may be one reason for this. We present result
Recent scholarly work has enhanced our understanding of how new path development activities are enabled or constrained by ‘regional environments’, made up of pre-existing industrial structures, knowledge organizations, support structures and institutional configurations. This paper moves beyond overly static views on regional environments. We develop a dynamic perspective by analysing conceptually
The computing grid is a distributed parallel processing system that share and choosing resources dynamically and provide need of user operation power, cost and quality .grid management resources does as a diagnostic and assigning resources scheduling and resource monitoring in grid . Scheduling process directs tasks to suitable resources. It must take place some how that load work distributed equa
Employment-centered family policies enable parents to combine work and family, thereby improving work–life balance for individuals and families as well as increasing GDP. For these reasons, these policies constitute a central component of the social investment approach, a model for how to design social policies for contemporary societies. This study seeks to understand whether voters enable the ex
