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Elimination of resistive losses in large-area LEDs by new diffusion-driven devices

High-power operation of conventional GaN-based light-emitting diodes (LEDs) is severely limited by current crowding, which increases the bias voltage of the LED, concentrates light emission close to the p-type contact edge, and aggravates the efficiency droop. Fabricating LEDs on thick n-GaN substrates alleviates current crowding but requires the use of expensive bulk GaN substrates and fairly lar

Intracavity double diode structures with GaInP barrier layers for thermophotonic cooling

Optical cooling of semiconductors has recently been demonstrated both for optically pumped CdS nanobelts and for electrically injected GaInAsSb LEDs at very low powers. To enable cooling at larger power and to understand and overcome the main obstacles in optical cooling of conventional semiconductor structures, we study thermophotonic (TPX) heat transport in cavity coupled light emitters. Our str

International Survey of the Costs of Assessment for Environmental Product Declarations

Environmental Product Declarations (EPDs) are used to communicate product's environmental performances to relevant stakeholders, whereas Product Category Rules (PCRs) provide guidelines for making EPDs in different product categories. Little is known regarding the cost for developing EPDs and PCRs. We therefore conducted an international survey, and 15 responses from EPD certification operators we

Diagnostics of femoral head status in humans using high-resolution laser spectroscopy : In vitro studies

Osteonecrosis of the femoral head is caused by inadequate blood supply to the affected bone. The bone decay process due to lacking blood supply would be likely to be accompanied by the formation of gas-filled pores. We have introduced diode laser absorption spectroscopy to successfully detect water vapor signals from pores in the femoral heads retrieved from hip replacement operations in 19 patien

Ischemic Preconditioning Confers Epigenetic Repression of Mtor and Induction of Autophagy Through G9a-Dependent H3K9 Dimethylation

BACKGROUND: Ischemic preconditioning (IPC) protects the heart from prolonged ischemic insult and reperfusion injury through a poorly understood mechanism. Post-translational modifications of histone residues can confer rapid and drastic switches in gene expression in response to various stimuli, including ischemia. The aim of this study was to investigate the effect of histone methylation in the r

Aesthetic result after breast-conserving therapy is associated with quality of life several years after treatment. Swedish women evaluated with BCCT.core and BREAST-Q™

Purpose: A gold standard for evaluation of aesthetic outcome after breast-conserving therapy (BCT) is still lacking. The BCCT.core software has been developed to assess aesthetic result in a standardised way. We aimed to study how the result of BCCT.core after BCT is associated with quality of life, measured with the BREAST-Q™, a validated questionnaire. Methods: Women eligible for BCT were consec

Att skapa ordning : Den systematiska samlaren

For a collection to be considered as such, and not appear only as a clutter or jumble of things, it has to be based on some kind of selection and systematisation. The research question of this article is how and why collectors structure their collections, organise, and arrange them. The research material is answers to the directive “Collecting things”, presented by the Mass Observation Archive in For a collection to be considered as such, and not appear only as a clutter or jumble of things, it has to be based on some kind of selection and systematisation. The research question of this article is how and why collectors structure their collections, organise, and arrange them. The research material is answers to the directive “Collecting things”, presented by the Mass Observation Archive in

High expression of cyclin D1 is associated to high proliferation rate and increased risk of mortality in women with ER-positive but not in ER-negative breast cancers

Purpose: Cyclin D1 has a central role in cell cycle control and is an important component of estrogen regulation of cell cycle progression. We have previously shown that high cyclin D expression is related to aggressive features of ER-positive but not ER-negative breast cancer. The aims of the present study were to validate this differential ER-related effect and furthermore explore the relationsh

Income disparities in healthcare use remain after controlling for healthcare need : evidence from Swedish register data on psoriasis and psoriatic arthritis

We used a southern Swedish cohort of psoriasis (PSO) and psoriatic arthritis (PsA) patients and population-based referents (N = 57,800) to investigate the influence of socioeconomic and demographic factors on the probability of healthcare use and on healthcare costs when controlling for need as measured by PSO/PsA and common additional morbidities such as diabetes, depression and myocardial infarc

[18F]Fluorodeoxyglucose-positron emission tomography/computed tomography response evaluation can predict histological response at surgery after induction chemotherapy for oligometastatic bladder cancer

Objective: Patients with limited metastatic and locally advanced bladder cancer have a poor prognosis, and no definite treatment recommendations exist. However, long-term survival is possible for selected patients if surgery is combined with multiple courses of chemotherapy (i.e. induction chemotherapy). Patients with tumours that are insensitive to chemotherapy probably have little to gain from s

Semantic Knowledge, Domains of Meaning and Conceptual Spaces

The main thesis of this chapter is that children do not learn single new words but rather new words that belong to the same domain. For example, once they learn a word for a color, other color words will be learned soon after. The chapter presents a model of such domain-oriented language learning. Conceptual spaces are used as a framework for modeling the semantic processes involved in language ac

Are ankylosing spondylitis, psoriatic arthritis and undifferentiated spondyloarthritis associated with an increased risk of cardiovascular events? A prospective nationwide population-based cohort study

Background: To investigate the risk of first-time acute coronary syndrome (ACS), stroke and venous thromboembolism (VTE) in patients with ankylosing spondylitis (AS), psoriatic arthritis (PsA) and undifferentiated spondyloarthritis (uSpA), compared to each other and to the general population (GP). Methods: This is a prospective nationwide cohort study. Cohorts with AS (n = 6448), PsA (n = 16,063)

Development of a novel radiotherapy motion phantom using a stepper motor driver circuit and evaluation using optical surface scanning

Abstract: Recent developments in radiotherapy have focused on the management of patient motion during treatment. Studies have shown that significant gains in treatment quality can be made by ‘gating’ certain treatments, simultaneously keeping target coverage, and increasing separation to nearby organs at risk (OAR). Motion phantoms can be used to simulate patient breathing motion and provide the m

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This research makes clear the narrative transformation in a novel called Red Rebel by Ali Ahmad Bakathir after dealing with a systematic an entrance in which he explains what is meant by narrative transformation and how it is implemented in the text of novels through presenting a number of concepts provided by the narrative semiotics by the School of Paris. The first part of this research shows th