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The evolution of eyes and visually guided behaviour

The morphology and molecular mechanisms of animal photoreceptor cells and eyes reveal a complex pattern of duplications and co-option of genetic modules, leading to a number of different light-sensitive systems that share many components, in which clear-cut homologies are rare. On the basis of molecular and morphological findings, I discuss the functional requirements for vision and how these have

Analysis of nuclear quadrupole resonance signals from mixtures

Nuclear quadrupole resonance (NQR) is a solid-state radio frequency (RF) technique, able to detect and identify compounds containing quadrupolar nuclei, including many high explosives, narcotics and pharmaceutical compounds. In addition to being able to identify entirely different compounds, the technique is also able to distinguish between different polymorphic forms of the same compound. Analysi

Goal-setting in Multidisciplinary Team Care for Patients with Rheumatoid Arthritis: An International Multi-centre Evaluation of the Contents Using the International Classification of Functioning, Disability and Health as a Reference

Objective: To make a cross-cultural comparison of the contents of rehabilitation goals of patients admitted for rehabilitation and to compare the contents with the comprehensive International Classification of Functioning, Disability and Health (ICF) Core Set for rheumatoid arthritis, by linking their contents to the ICF. Patients: A random sample of 80 patients with rheumatoid arthritis was retri

Imaging of gynecological disease (2): clinical and ultrasound characteristics of Sertoli cell tumors, Sertoli-Leydig cell tumors and Leydig cell tumors

Objective To describe the clinical history and ultrasound findings in women with ovarian Sertoli cell, Sertoli-Leydig cell and Leydig cell tumors. Methods Women with a histological diagnosis of Sertoli cell tumor, Sertoli-Leydig cell tumor or Leydig cell tumor who bad undergone preoperative ultrasound examination were identified from the databases of each of three participating ultrasound centers.

Aspects of bleeding complications and hemostasis at central line insertion and mild induced hypothermia

Popular Abstract in Swedish Blodlevring är en samlingsterm för en serie reaktioner som medför att blod omvandlas från vätska till en geléliknande massa. I koagulationsprocessen samverkar de minsta cellerna i blodet, trombocyterna (blodplättarna), med ett stort antal blodproteiner. Koagulationens viktigaste uppgift är att stoppa blödningar som uppkommer vid skador på blodkärlen. Central venkateteBleeding complications range from 0.5 to 1.6% in connection with central venous catheter insertions but are more frequent in patients with bone marrow failure and severe thrombocytopenia. Although supportive evidence is scarce, prophylactic platelet transfusion is sometimes performed in these patients before catheter insertion. Furthermore, the ideal threshold platelet count and timing of transfus

Energy-Efficient Decentralized Cooperative Routing in Wireless Networks

Wireless adhoc networks transmit information from a source to a destination via multiple hops in order to save energy and, thus, increase the lifetime of battery-operated nodes. The energy savings can be especially significant in cooperative transmission schemes, where several nodes cooperate during one hop to forward the information to the next node along a route to the destination. Finding the b

The effect of elevated pressures on the laminar burning velocity of methane plus air mixtures

In spite of the large amount of research spent on the evaluation of the high pressure dependence of laminar burning velocity of methane + air flame, there still exists a large uncertainty in the data for various reasons. In order to reduce the scatter to acceptable levels, the Heat Flux Method (HFM), known as a potential method with high accuracy, has been extended to higher pressures. New measure

Antiproliferative effects of curcuphenol, a sesquiterpene phenol.

Curcuphenol is a sesquiterpene isolated from sponges and plants having several significant biological activities. The present study explored its effect on cell proliferation and apoptosis in Caco-2 human colon cancer cells. It was demonstrated that curcuphenol in concentrations in the range of 29-116microg/ml inhibited cell proliferation and DNA replication and induced cell death in a dose-depende

Concurrent validity of the Executive Function Performance Test in people with mild stroke

Introduction: Studies have shown that executive dysfunction is common in adults after stroke. Occupational therapists working in acute care assess the performance of activities of daily living; most instruments focus on personal care. However, the assessment of instrumental activities of daily living has been shown to discriminate executive dysfunction more effectively. An instrument for assessing

Excited-State Proton-Transfer Processes of DHICA Resolved: From Sub-Picoseconds to Nanoseconds

Excited-state proton transfer has been hypothesized as a mechanism for UV energy dissipation in eumelanin skin pigments. By using time resolved fluorescence spectroscopy, we show that the previously proposed, but unresolved, excited-state intramolecular proton transfer (ESIPT) of the eumelanin building block 5,6-dihydroxyindole-2-carboxylic acid (DHICA) occurs with a time constant of 300 fs in aqu

Network Formation: Neighborhood Structures, Establishment Costs, and Distributed Learning

We consider the problem of network formation in a distributed fashion. Network formation is modeled as a strategic-form game, where agents represent nodes that form and sever unidirectional links with other nodes and derive utilities from these links. Furthermore, agents can form links only with a limited set of neighbors. Agents trade off the benefit from links, which is determined by a distance-

Provider involvement in business service definition: A typology

This paper proposes a typology for provider roles in defining business services. The starting point of the study is the underlying rationale of much of the service purchasing literature that buyers have or can easily access the necessary know-how to procure business services. If this does not hold, the implication is that buying firms would shy away from buying complex services. An alternative per

Effect of Temperature Stratification on the Auto-Ignition of Lean Ethanol/Air Mixture in HCCI Engine

It has been known from multi-zone simulations that HCCI combustion can be significantly affected by temperature stratification of the in-cylinder gas. With the same combustion timing (i.e., crank angles at 50% heat release, denoted as CA50), large temperature stratification tends to prolong the combustion duration and lower down the in-cylinder pressure-rise-rate. With low pressure-rise-rate HCCI