Publications by authors named "Hansen V"

We have recorded the gas phase spectrum of isoprene at room temperature from the mid-infrared range and into the visible range (600 cm to 17050 cm). Absorption spectra were obtained by Fourier transform infrared, conventional dispersion ultraviolet-visible-near-infrared and cavity ring-down spectroscopy to cover the entire range with a resolution comparable to that of the instruments on the James Webb Space Telescope. We have assigned the CH-stretching fundamental and overtone bands corresponding to the Δv=1-6 transitions based on anharmonic vibrational calculations using normal mode and local mode models, for the lower- and higher-energy regions, respectively.

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  • The cartilage growth plate is vital for skeletal growth, but its postnatal homeostasis mechanisms are not well understood; research highlights the role of ADGRG6/GPR126 in maintaining the growth plate structure and function in mice.
  • Deletion of the Adgrg6 gene disrupts growth plate balance, leading to issues like a shorter resting zone and altered chondrocyte behavior, with implications on signaling molecules like PTHrP and Indian Hedgehog.
  • ADGRG6 is shown to be crucial for chondrocyte health and regulation, impacting genes involved in growth and cell death, particularly through enhancing the expression of SOX9 and maintaining overall growth plate integrity.
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  • The study aimed to identify the maximum tolerated dose (MTD) for treating muscle invasive bladder cancer using image-guided adaptive radiation therapy while monitoring long-term clinical outcomes.
  • A total of 59 patients with specific stages of bladder cancer participated, with their tumors receiving doses ranging from 68 to 72 Gy, and the MTD was found to be 70 Gy.
  • Results showed that 5-year overall survival was 58%, and the bladder preservation rate was high at 89%, with minimal severe acute toxicities reported.
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  • Radiotherapy trial quality assurance (RT QA) is essential for ensuring safe and consistent radiation treatment across different institutions, focusing on adaptive methods like Image-Guided Radiotherapy (IGRT) in the RAIDER trial for bladder cancer.
  • This study analyzed data from 72 participants over 884 Cone-Beam Computed Tomography (CBCT) scans to compare online and offline treatment plan selections, revealing an overall concordance rate of 83%.
  • Results showed an improvement in concordance from 75% in the first stage of the trial to 91% in the second stage, emphasizing the importance of ongoing QA support during the introduction of new radiotherapy techniques.
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Previous theoretical investigations of the reactions between an OH radical and a nucleobase have stated the most important pathways to be the C5-C6 addition for pyrimidines and the C8 addition for purines. Furthermore, the abstraction of a methyl hydrogen from thymine has also been proven an important pathway. The conclusions were based solely on gas-phase calculations and harmonic vibrational frequencies.

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Objective: To perform a systematic review and meta-analysis of the diagnostic accuracy of deep learning (DL) algorithms in the diagnosis of wrist fractures (WF) on plain wrist radiographs, taking healthcare experts consensus as reference standard.

Methods: Embase, Medline, PubMed, Scopus and Web of Science were searched in the period from 1 Jan 2012 to 9 March 2023. Eligible studies were patients with wrist radiographs for radial and ulnar fractures as the target condition, studies using DL algorithms based on convolutional neural networks (CNN), and healthcare experts consensus as the minimum reference standard.

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Background: People with a mental health condition experience a high prevalence of chronic disease risk behaviours e.g., tobacco smoking and physical inactivity.

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Background: Moyamoya disease (MMD) is considered a progressive disease with an ongoing risk of recurrent stroke. However, there is a lack of long-term observational data to quantify the extent of the stroke risk.

Methods: This study aimed to provide insight into the long-term stroke risk in MMD and explore possible risk factors for stroke.

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  • A study aimed to explore how a chatbot could be integrated into a healthy eating website to better engage young adults and promote healthier eating habits.
  • Eighteen interviews were conducted with three groups: dietary behavior experts, young adult website users, and chatbot design experts, utilizing a behavioral change framework for data analysis.
  • Key findings revealed three main potential roles for the chatbot: enhancing healthy eating knowledge, reducing time barriers to healthy eating, and providing support/social engagement, with specific features suggested for each role to optimize user experience and effectiveness.
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Background And Purpose: Radiotherapy for vulvar carcinoma is challenging due to relatively high risk of locoregional disease recurrence, a technically challenging target, and postoperative lymphocele, and a high risk radiation sequelae. We aim to explore, if it is possible to reduce dose to normal tissue, while maintaining CTV coverage for this patient group with online adaptive radiotherapy.

Materials And Methods: 20 patients with vulvar carcinoma (527 fractions) were treated with online adaptation on a Varian Ethos accelerator.

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Cover crops increase carbon (C) inputs to agricultural soils, and thus have the potential to mitigate climate change through enhanced soil organic carbon (SOC) storage. However, few studies have explored the fate of belowground C inputs associated with varying root traits into the distinct SOC pools of mineral-associated organic carbon (MAOC) particulate organic carbon (POC). Therefore, a packed 0.

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Microstructure and texture evolution of directed-laser deposited super-duplex stainless-steel, in the as-received block, were characterized using light and electron microscopies and electron backscattered diffraction. Mechanical properties in different directions were studied. Local FCC-depleted and FCC-rich zones and extensive precipitation of oxides were detected at the matrix wherein the different types of reformed austenite were surrounded by the elongated coarse ferrite.

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This study proposes using the network of urban gardens to grow vegetables and to monitor air quality, and it also evaluates whether food grown on a clean substrate in an urban environment is safe for consumption. For this purpose, lettuces were exposed to different degrees of air pollution in five locations in the city of Copenhagen, plus a reference site. Six specimens were placed at each site and, after the exposure period, half of each sample was washed.

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To explore young adult's experiences of how starting university influenced their physical activity, diet, sleep, and mental well-being, and barriers and enablers to health behavior change. University students aged 18-25 years. Three focus groups were conducted in November 2019.

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  • Radon-222 and its decay products are major sources of background ionizing radiation, contributing significantly to lung cancer risks for both smokers and non-smokers.
  • A community study in Whitehorse, Yukon, measured indoor radon levels in 232 homes, revealing considerable regional variation in radon concentrations, with some areas exceeding safe limits.
  • The average radon exposure for adults in Whitehorse significantly surpasses the global average, highlighting the need for effective mitigation strategies to reduce indoor radon levels.
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  • - The study investigates the link between femoroacetabular impingement (FAI) and hip osteoarthritis (OA), using whole-genome RNA sequencing to identify differentially expressed genes (DEGs) in cartilage samples from FAI and OA patients.
  • - A total of 3531 DEGs were discovered, with notable gene expression patterns: FGF18 and WNT16 were increased in FAI samples, while MMP13 and ADAMTS4 were elevated in OA samples, indicating different biological responses in the progression from FAI to OA.
  • - The findings suggest that early FAI may involve heightened anabolic signaling, which shifts towards catabolic and inflammatory gene expression as the condition worsens, ultimately contributing to
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Background: Whole-of-school programs have demonstrated success in improving student physical activity levels, but few have progressed beyond efficacy testing to implementation at-scale. The purpose of our study was to evaluate the scale-up of the 'Internet-based Professional Learning to help teachers promote Activity in Youth' (iPLAY) intervention in primary schools using the RE-AIM framework.

Methods: We conducted a type 3 hybrid implementation-effectiveness study and collected data between April 2016 and June 2021, in New South Wales (NSW), Australia.

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Indoor radon and its decay products are the primary sources of the population's exposure to background ionizing radiation. Radon decay products are one of the leading causes of lung cancer, with a higher lung cancer risk for smokers due to the synergistic effects of radon decay products and cigarette smoking. A total of 459 year-long radon measurements in 257 detached and semi-detached residential homes in southwest and south Greenland were carried out, and a dose assessment for adults was performed.

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Background: Chronic cough, more than 8 weeks, can either be without co-morbidity called unexplained chronic cough (UCC) or with co-morbidity called refractory chronic cough (RCC). Using datasets from the Danish National Prescription Registry (Prescription Registry) and Danish National Patient Registry (Patient Registry) we wanted to investigate the prevalence and factors of importance of cough in a Nationwide registry.

Material And Methods: Inclusion criteria were patients 18-90 years with at least one final cough diagnosis (ICD-10 DR05/DR059) in Patient registry or patients who have redeemed ≥2 prescriptions for relevant cough-medication within a 90-day harvest in the Prescription registry from 2008 to 2017.

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Aims: To determine the relationship between local relapse following radical radiotherapy for muscle-invasive bladder cancer (MIBC) and radiation dose.

Materials And Methods: Patients with T2-4N0-3M0 MIBC were recruited to a phase II study assessing the feasibility of intensity-modulated radiotherapy to the bladder and pelvic lymph nodes. Patients were planned to receive 64 Gy/32 fractions to the bladder tumour, 60 Gy/32 fractions to the involved pelvic nodes and 52 Gy/32 fractions to the uninvolved bladder and pelvic nodes.

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Aims: Inclusion of the internal mammary chain in the radiotherapy target volume (IMC-RT) improves disease-free and overall survival in higher risk breast cancer patients, but increases radiation doses to heart and lungs. Dosimetric data show that either modified wide-tangential fields (WT) or volumetric modulated arc therapy (VMAT) together with [AQ1]voluntary deep inspiration breath hold (vDIBH) keep mean heart doses below 4 Gy in most patients. However, the impact on departmental resources has not yet been documented.

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T lymphocytes or T cells are key components of the vertebrate response to pathogens and cancer. There are two T cell classes based on their TCRs, αβ T cells and γδ T cells, and each plays a critical role in immune responses. The squamate reptiles may be unique among the vertebrate lineages by lacking an entire class of T cells, the γδ T cells.

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During germination, the seed releases nutrient-rich exudates into the spermosphere, thereby fostering competition between resident microorganisms. However, insight into the composition and temporal dynamics of seed-associated bacterial communities under field conditions is currently lacking. This field study determined the temporal changes from 11 to 31 days after sowing in the composition of seed-associated bacterial communities of winter wheat as affected by long-term soil fertilization history, and by introduction of the plant growth-promoting microbial inoculants Penicillium bilaiae and Bacillus simplex.

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Two multicentre adaptive radiotherapy trials utilising Plan of the Day (PoD) with a library of plans were introduced in 35 centres. The common issues that arose from all centres when introducing PoD were collated retrospectively, through reviewing the data pertaining to the pre-trial and on-trial quality assurance programme. It was found that 1,295 issues arose when introducing PoD in outlining, planning, treatment delivery i.

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