3,576 results on '"Stien A"'
Search Results
2. Biological Valuation Map of Flanders: A Sentinel-2 Imagery Analysis
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Li, Mingshi, Grujicic, Dusan, De Saeger, Steven, Heremans, Stien, Somers, Ben, and Blaschko, Matthew B.
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Computer Science - Computer Vision and Pattern Recognition ,Computer Science - Machine Learning - Abstract
In recent years, machine learning has become crucial in remote sensing analysis, particularly in the domain of Land-use/Land-cover (LULC). The synergy of machine learning and satellite imagery analysis has demonstrated significant productivity in this field, as evidenced by several studies. A notable challenge within this area is the semantic segmentation mapping of land usage over extensive territories, where the accessibility of accurate land-use data and the reliability of ground truth land-use labels pose significant difficulties. For example, providing a detailed and accurate pixel-wise labeled dataset of the Flanders region, a first-level administrative division of Belgium, can be particularly insightful. Yet there is a notable lack of regulated, formalized datasets and workflows for such studies in many regions globally. This paper introduces a comprehensive approach to addressing these gaps. We present a densely labeled ground truth map of Flanders paired with Sentinel-2 satellite imagery. Our methodology includes a formalized dataset division and sampling method, utilizing the topographic map layout 'Kaartbladversnijdingen,' and a detailed semantic segmentation model training pipeline. Preliminary benchmarking results are also provided to demonstrate the efficacy of our approach.
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- 2024
3. Comparison of resistance training vs static stretching on flexibility and maximal strength in healthy physically active adults, a randomized controlled trial
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Rosenfeldt, Morten, Stien, Nicolay, Behm, David G., Saeterbakken, Atle Hole, and Andersen, Vidar
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- 2024
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4. Alone and together: registered nurses’ experiences of work satisfaction in municipal home healthcare
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Stien, Therese and Josefsson, Karin
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- 2024
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5. Spiroplasma infection as a cause of severe congenital keratouveitis, cataract and glaucoma
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Van Haecke, Helena, Roels, Dimitri, Nerinckx, Fanny, Schaballie, Heidi, Schelstraete, Petra, Vandekerckhove, Linos, Van Cleemput, Jolien, Van den Broeck, Wim, Couck, Liesbeth, Hamerlinck, Hannelore, Vandendriessche, Stien, Boelens, Jerina, and Joniau, Inge
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- 2024
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6. The Connection Between Resistance Training, Climbing Performance, and Injury Prevention
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Saeterbakken, Atle Hole, Stien, Nicolay, Pedersen, Helene, Langer, Kaja, Scott, Suzanne, Michailov, Michail Lubomirov, Gronhaug, Gudmund, Baláš, Jiří, Solstad, Tom Erik Jorung, and Andersen, Vidar
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- 2024
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7. The use of information technology to improve interdisciplinary communication during infectious diseases ward rounds on the paediatric intensive care unit
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Willems, Jef, Heyndrickx, Adeline, Schelstraete, Petra, Gadeyne, Bram, De Cock, Pieter, Vandendriessche, Stien, and Depuydt, Pieter
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- 2024
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8. Non-Contact-Lens-Related Acanthamoeba Keratitis Caused by Acanthamoeba sp. Group T4D/T4e
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Morgane Vander Eecken, Anne-Sophie Messiaen, Hannelore Hamerlinck, Stien Vandendriessche, Jerina Boelens, and Dimitri Roels
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Acanthamoeba ,keratitis ,genotype T4D ,Infectious and parasitic diseases ,RC109-216 ,Biology (General) ,QH301-705.5 - Abstract
Acanthamoeba keratitis (AK) is a rare but serious infection of the cornea, typically associated with contact lens wear. Here, we present a case of AK caused by the Acanthamoeba genotype T4D/T4e in a patient without identifiable risk factors: a 34-year-old woman who initially presented with signs and symptoms suggestive of herpetic keratitis, and who did not respond to conventional treatment. Corneal culture and targeted metagenomic analysis (18S rRNA, 16S-like rRNA) revealed the presence of an Acanthamoeba species closely related to the ‘Nagington’ strain. Despite intensive anti-Acanthamoeba therapy, complications arose necessitating penetrating keratoplasty. In conclusion, this case underscores the importance of considering Acanthamoeba as a causal agent of keratitis in non-contact-lens wearers. The identification of Acanthamoeba genotype T4D/T4e challenges the previous understanding of its pathogenic potential. Furthermore, it emphasizes the need for ongoing research into the pathogenicity of different Acanthamoeba subtypes. Early diagnosis and treatment are essential for preventing vision-threatening complications associated with AK.
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- 2024
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9. Linnemannia elongata: A Key Species in Chitin-Based Plant Growth Promotion
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Caroline De Tender, Michiel Vandecasteele, Sarah Ommeslag, Noémie De Zutter, Ellen Vandenbussche, Annelies Haegeman, Kris Audenaert, Leilei Li, Bart Vandecasteele, Floris Voorthuijzen, Kristof Maenhout, Stien Beirinckx, Rosita Barneveldt, Sofie Goormachtig, and Jane Debode
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chitin ,growth promotion ,Linnemannia ,metabarcoding ,whole genome sequencing ,Plant culture ,SB1-1110 ,Microbial ecology ,QR100-130 ,Plant ecology ,QK900-989 - Abstract
Chitin has proven to be a valuable alternative to mineral fertilizers in growing media. We recently hypothesized that chitin might work as a biostimulant, attracting plant growth-promoting microbes to the rhizosphere. In particular, Mortierellales species increase in abundance massively with chitin application and might have a profound role in chitin-mediated plant growth promotion. We isolated four strains of this order classified as Linnemannia elongata from chitin-enriched growing medium and the lettuce rhizosphere. The isolates induced a consistent increase in shoot and root fresh weight and increased chlorophyll content of Arabidopsis thaliana in vitro, as measured by multispectral imaging. By studying the isolate's genomes, we postulated that this growth promotion was induced through auxin production, translocation of calcium to the plant, or both. The synergy between chitin and L. elongata was demonstrated by (i) the chitinase activity and chitin degradation potential of all isolates and (ii) the positive effect of chitin and L. elongata seed coating on germination of A. thaliana seeds compared with L. elongata seed coating without chitin. We conclude that chitin-related growth promotion is dependent on activation of the microbial community, with L. elongata as a key species. [Graphic: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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- 2024
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10. Case report: Successful treatment of chorioptic mange in two Belgian draft horse foals with topical ivermectin
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Marieke Brys, Stien Den Hondt, Veronique Saey, Edwin Claerebout, and Koen Chiers
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Belgian draft horse ,Chorioptes bovis ,ivermectin ,treatment ,mange ,Veterinary medicine ,SF600-1100 - Abstract
IntroductionVarious draft horse breeds, especially breeds with abundant feathering on the lower limbs, are known to be susceptible to chorioptic mange. Clinical signs of chorioptic mange encompass intense pruritus leading to self-mutilation and hair loss, thickening of the epidermis, and the formation of hyperkeratotic crusts and scabs. Despite the frequent occurrence and high impact of this condition, treatment options are limited, with a conspicuous absence of registered products formulated for equines, and especially foals. This limited availability of approved products highlights the necessity for alternative approaches to effectively address chorioptic mange in draft horse populations, given the severity of the clinical signs and their negative impact on the well-being of infested horses.MethodsTwo 9-months old Belgian draft horse foals with clinical signs of severe pruritus and skin scaling on the distal legs were included. Both horses tested positive for living mites by means of superficial skin scrapings. Topical treatment with ivermectin at a dose of 1 mg/kg body weight was applied twice with 1 week interval, directly onto the distal legs of the horses.ResultsIn both cases, the mites were morphologically identified as Chorioptes bovis. Negative scrapings were obtained 7 days after the second treatment. Pruritus resolved in both horses within 2 days after the first treatment. Clinical signs consisting of skin scaling and crusting in the pastern region had resolved as well at 1 week and 3 weeks after the second treatment, respectively.ConclusionThis case report presents the first successful treatment of two clinical cases of chorioptic mange in Belgian draft horse foals with 1 mg/kg topical ivermectin, applied directly onto the distal legs.
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- 2024
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11. Five weeks of dynamic finger flexor strength training on bouldering performance and climbing-specific strength tests. A randomized controlled trial
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Atle Hole Saeterbakken, Erik Bratland, Vidar Andersen, and Nicolay Stien
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performance ,finger flexor strength ,rate of force development ,resistance training ,climbing ,bouldering ,Physiology ,QP1-981 - Abstract
The aim of the study was to examine the effects of a 5-week dynamic finger flexor strength training program on bouldering performance and climbing-specific strength tests. Advanced to elite level boulderers (n = 31) were randomized to a dynamic finger strength training group (DFS) or a control group (CON). The DFS training program consisted of 3 weekly sessions (3–5 sets, 4–10 repetitions per session). Both groups continued bouldering training as usual throughout the intervention period. Pre- and post-intervention measures included bouldering performance, maximal dynamic finger strength, isometric finger strength (peak and average force), and rate of force development (RFD). The DFS demonstrated greater improvement in dynamic finger strength (11.5%, 3.9 kg) than the CON (5.3%, 1.7 kg; p = 0.075, ES = 0.90), but there were no differences between the groups in 1RM (p = 0.075, ES = 0.67), bouldering performance (p = 0.39, ES = 0.35), isometric finger strength (p = 0.42–0.56, ES = 0.20–0.22) or RFD (p = 0.30, ES = 0.46). The DFS improved dynamic (p < 0.01, ES = 1.83) and isometric peak and average (p < 0.01, ES = 0.98, and p < 0.01, ES = 0.75, respectively) finger strength, while the CON only increased dynamic finger strength (p < 0.05, ES = 0.58). None of groups improved bouldering performance or RFD (p = 0.07–0.58). In conclusion, 5 weeks of DFS training improving dynamic strength to a greater extent than bouldering alone in addition to improving isometric finger strength among advanced boulderers. Isolated bouldering improved dynamic finger flexor strength, but importantly, increased finger strength (dynamic or isometric) did not improve bouldering performance.
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- 2024
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12. Satellite-Based Mapping of Purple Moor Grass for Wildfire Fuel Load Assessment in Heathlands.
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Stien Heremans, Victor Wepener, and Ben Somers
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- 2024
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13. Biological Valuation Map of Flanders: A Sentinel-2 Imagery Analysis.
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Mingshi Li, Dusan Grujicic, Steven De Saeger, Stien Heremans, Ben Somers, and Matthew B. Blaschko
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- 2024
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14. Integrating citizen science and multispectral satellite data for multiscale habitat management
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Van Eupen, Camille, Maes, Dirk, Heremans, Stien, Swinnen, Kristijn R. R., Somers, Ben, and Luca, Stijn
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- 2024
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15. Comparison of non-medicinal delousing strategies for parasite (Lepeophtheirus salmonis) removal efficacy and welfare impact on Atlantic salmon (Salmo salar) hosts
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Thompson, Cameron R. S., Madaro, Angelico, Nilsson, Jonatan, Stien, Lars Helge, Oppedal, Frode, Øverli, Øyvind, Korzan, Wayne J., and Bui, Samantha
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- 2024
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16. Rapid detection of S. pyogenes and S. pneumoniae in pleural fluid for diagnosis of parapneumonic empyema
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De Schuyter, Kelly, Boelens, Jerina, Messiaen, Anne-Sophie, Schelstraete, Petra, Verhasselt, Bruno, Huis In’t Veld, Diana, Callens, Steven, Sermijn, Erica, Vande Weygaerde, Yannick, and Vandendriesche, Stien
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- 2024
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17. Comparison of resistance training vs static stretching on flexibility and maximal strength in healthy physically active adults, a randomized controlled trial
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Morten Rosenfeldt, Nicolay Stien, David G. Behm, Atle Hole Saeterbakken, and Vidar Andersen
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Sit and reach ,Range of motion ,Strength training ,Deadlifts ,Lower back ,Isometric ,Sports medicine ,RC1200-1245 - Abstract
Abstract Background The aim of the present study was to compare the effects of resistance training through full range of motion and static stretching (SS) of the hip and lower back extensors on flexibility and strength in healthy, physically active, adults. Methods Eighteen participants (age: 24.2 ± 3.0 years, body mass: 71.3 ± 8.9 kg, height: 172.8 ± 7.5 cm) were randomly assigned to either a Resistance Training (RT) (n = 6), SS (n = 6), or control (CON) group (n = 6). The sit & reach (S&R) flexibility test and maximum isometric straight legged deadlift (ISLDL) at 95% and 50% range of motion (ROM) were tested pre- and post-intervention with significance set at p
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- 2024
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18. Alone and together: registered nurses’ experiences of work satisfaction in municipal home healthcare
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Therese Stien and Karin Josefsson
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Work satisfaction ,Municipal home healthcare ,Registered nurse ,Interview ,Nursing ,RT1-120 - Abstract
Abstract Background The need for advanced home healthcare (HHC) is expected to increase, with registered nurses (RNs) as key figures. Given the difficulties recruiting and retaining RNs in the HHC sector, understanding their work satisfaction is imperative. Aim This study aimed to explore RNs’ experiences of work satisfaction in the municipal HHC. Methods Individual interviews were conducted with RNs (n = 8) in four municipalities in Norway. The data were evaluated using qualitative content analysis. Results Work satisfaction in HHC was organised into one theme ‘alone and together’ under four categories—the patient, the co-worker, the registered nurse, and the organisation—and 15 subcategories, including patient diversity, supportive co-workers and professional environment, appropriate workload and responsibilities, and provision of preconditions for self-management. Conclusions Patients, co-workers, and organisations were identified as crucial areas affecting RNs’ work satisfaction in the municipal HHC. Awareness of these areas is essential to promote RNs’ work satisfaction. Patients’ diversity adds positively to RNs’ work satisfaction. Notably, RNs working alone can affect their work satisfaction not only negatively but also positively.
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- 2024
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19. Spiroplasma infection as a cause of severe congenital keratouveitis, cataract and glaucoma
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Helena Van Haecke, Dimitri Roels, Fanny Nerinckx, Heidi Schaballie, Petra Schelstraete, Linos Vandekerckhove, Jolien Van Cleemput, Wim Van den Broeck, Liesbeth Couck, Hannelore Hamerlinck, Stien Vandendriessche, Jerina Boelens, and Inge Joniau
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Congenital keratouveitis ,Cataract ,Angle-closure glaucoma ,Spiroplasma ixodetis ,Ophthalmology ,RE1-994 - Abstract
Abstract Background Only seven cases of ocular Spiroplasma infection have been reported to date, all presenting as congenital cataracts with concomitant intraocular inflammation. We describe the first case of Spiroplasma infection initially presenting as a corneal infiltrate. Case presentation A 1-month-old girl was referred for a corneal infiltrate in the left eye. She presented in our hospital with unilateral keratouveitis. Examination showed a stromal corneal infiltrate and dense white keratic precipitates in the left eye. Herpetic keratouveitis was suspected and intravenous acyclovir therapy was initiated. Two weeks later, the inflammation in the left eye persisted and was also noticed in the right eye. Acute angle-closure glaucoma and a cataract with dilated iris vessels extending onto the anterior lens capsule developed in the left eye. The inflammation resolved after treatment with azithromycin. Iridectomy, synechiolysis and lensectomy were performed. Bacterial metagenomic sequencing (16 S rRNA) and transmission electron microscopy revealed Spiroplasma ixodetis species in lens aspirates and biopsy. Consequently, a diagnosis of bilateral Spiroplasma uveitis was made. Conclusions In cases of congenital cataract with concomitant intraocular inflammation, Spiroplasma infection should be considered. The purpose of this case report is to raise awareness of congenital Spiroplasma infection as a cause of severe keratouveitis, cataract and angle-closure glaucoma in newborns. Performing molecular testing on lens aspirates is essential to confirm diagnosis. Systemic macrolides are suggested as the mainstay of treatment.
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- 2024
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20. Evaluating a crowding intensity scale and welfare indicators for Atlantic salmon in sea cages
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Lars Helge Stien, Jonatan Nilsson, Chris Noble, David Izquierdo-Gomez, Elisabeth Ytteborg, Gerrit Timmerhaus, and Angelico Madaro
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Salmon aquaculture ,Crowding ,Fish welfare ,Welfare indicators ,Fish behaviour ,Cortisol ,Aquaculture. Fisheries. Angling ,SH1-691 - Abstract
A 5-level crowding intensity scale for directing and auditing the crowding of Atlantic salmon in sea cages based on surface observations is currently included in standards, manuals, and guidelines for fish farmers. Here we test the feasibility of using this scale to create distinct crowding levels, the effects of these different levels upon fish welfare, and the suitability of a set of possible operational welfare indicators (OWIs) and laboratory-based welfare indicators (LABWIs) to be included in toolboxes for monitoring and assessing fish welfare in relation to the crowding of salmon in sea cages. Crowding level 1 was not included in this study since this is a very light level of crowding, and also not level 5 as this level clearly would harm the fish and lead to mortalities. We were able to use the scale to create three distinct crowding levels in two of three separate crowding events in 12×12m2 sea cages. Although the farm personnel were experienced, it soon became evident that underwater monitoring of fish behaviour and how the net was tightened around the fish was important to make sure that no pockets or irregularities that could harm the fish were formed during the crowding. Despite evidence of increased stress and epidermal damage with increased crowding intensity, there were no clear indications that this led to any long-term detrimental effects on fish welfare. In conclusion an OWI-toolbox for crowding should include both surface and underwater observations, monitoring of oxygen conditions, and morphological injury data to steer decisions to prevent welfare problems and mortalities. In addition, qualitative assessment of fish behaviour, plasma cortisol, and skin histology can be included in a LABWI-toolbox if more in-depth information on the effects from the crowding is wanted.
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- 2024
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21. Ecological implications of the pink salmon invasion in northern Norway—Aggregative responses and terrestrial transfer by white‐tailed eagles
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Bror Mathias Bonde and Audun Stien
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invasion ecology ,nutrient transfer ,resource subsidies ,scavenger community ,Ecology ,QH540-549.5 - Abstract
Abstract Over the last 10 years, the spawning population of invasive pink salmon (Oncorhynchus gorbuscha) has increased in the river systems in northern Norway to a level that is causing concern about their impact on endemic fauna and ecosystem processes. The scale of transfer of pink salmon carcasses into the terrestrial ecosystem is likely to be a key determinant of terrestrial impact. Bears (Ursus sp.) are responsible for most such transfers in North America but are rare in Norway. The white‐tailed eagle (Haliaeetus albicilla) is common however, and a candidate to be a main cause of such transfers. To evaluate this hypothesis, data on the abundance of white‐tailed eagles and pink salmon were collected along the river Skallelv in northern Norway in 2021, a year the pink salmon spawned in the river, and in 2022, a year no pink salmon spawned in the river. The abundance of white‐tailed eagles along the river was much higher the year pink salmon spawned in the river. Furthermore, white‐tailed eagles were observed aggregating and catching pink salmon where and when pink salmon were present at the spawning and post‐spawning stages. Based on our observations, we suggest that the white‐tailed eagle is the main species involved in the transport of pink salmon from the river into the riparian zone in northern Norway and that other scavengers, in particular the red fox (Vulpes vulpes) and common raven (Corvus corax), play an important role in transporting pink salmon carcasses from the riparian zone to the wider terrestrial ecosystem.
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- 2024
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22. Encounters in and with Summer Camps--Happy Childhood, Alternative Bildung, or What?
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Afonkina, Iuliia, Bigell, Werner, Chernik, Valerii, Ekeland, Torun Granstrøm, Kuzmicheva, Tatiana, Stien, Kirsten Elisabeth, and Zoglowek, Herbert
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Although they commonly are associated with recreation, summer camps for children can be seen as educational arenas that both supplement and challenge school education. Summer camps provide education in a broad sense of "bildung." The article aims at describing what is experienced in summer camps and proposes various theoretical frames for these bildung processes. The main focus is on summer camps in Russia, and we interviewed Russian informants who participated in summer camps. The findings were that learning in the camps tends to be non-instrumental, allowing room for play and experimentation for both pupils and teachers. Social learning is marked by collective elements such as camp rituals and spontaneous solidarity, both forming an individual personality. Outdoor activities are important because they connect children to nature and develop a sense of place marked by biophilia. Furthermore, nature's materiality creates a sense of being in the world, which means developing a sense of multiple relational settings, spanning from the materialities of geography, place, and objects to experiencing new social settings in the form of solidarity, ritual, and friendship.
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- 2021
23. From gardens to neighbourhoods: Characterizing the climate adaptation contribution of the garden landscape in Flanders
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Wittemans, Kelly, Dewaelheyns, Valerie, Teerlinck, Janne, Heremans, Stien, Lange, Florian, Raymaekers, Pieter, Van der Linden, Stijn, Van Valckenborgh, Jo, Strosse, Veerle, Steen, Trui, and Somers, Ben
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- 2024
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24. Ash dieback: A single-species catastrophe or a cascade of ecological effects in the ground flora?
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Schei, Fride Høistad, Arnberg, Mie Prik, Grytnes, John-Arvid, Johanesen, Maren Stien, Johansen, Jørund, Milford, Anna Birgitte, Røynstrand, Anders, and Tollefsrud, Mari Mette
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- 2024
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25. Control of Staphylococcus epidermidis biofilm by surfactins of an endophytic bacterium Bacillus sp. 15 F
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Jardak, Marwa, Lami, Raphaël, Saadaoui, Oumaima, Jlidi, Hajer, Stien, Didier, Aifa, Sami, and Mnif, Sami
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- 2024
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26. Vertebral deformities in cultured big size Rainbow Trout: Radiological analysis from juvenile to harvest size
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Fjelldal, Per Gunnar, Murugesan, Sankar, Vågseth, Tone, Pedersen, Audun Østby, Madaro, Angelico, Bui, Samantha, Kryvi, Harald, Stien, Lars Helge, and Nilsson, Jonatan
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- 2025
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27. The association of dextran sodium sulfate to the bioactive agent I-modulia® attenuates Staphylococcus aureus virulence expression and δ-toxin production
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Calvez, A., Stien, D., Villette, C., Lebaron, P., Ravard Helffer, K., Doat, G., and Bourrain, M.
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- 2025
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28. Digging into the Lettuce Cold-Specific Root Microbiome in Search of Chilling Stress Tolerance-Conferring Plant-Growth-Promoting Bacteria
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Antoine Persyn, Sonia García Méndez, Sam De Meyer, Stien Beirinckx, Anne Willems, Caroline De Tender, and Sofie Goormachtig
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chilling temperatures ,lettuce ,microbiome ,PGPB ,plant-growth-promoting rhizobacteria ,root endosphere ,Plant culture ,SB1-1110 ,Microbial ecology ,QR100-130 ,Plant ecology ,QK900-989 - Abstract
Growth of lettuce (Lactuca sativa) is severely hampered by low temperatures, even when cultivated under greenhouse conditions. Root-associated bacteria might promote plant growth under stressful conditions. Therefore, we analyzed the effect of low temperatures on the lettuce root-associated microbiome to evaluate whether microbiome-based selection aids in identiying bacteria that stimulate plant growth in the cold. 16S ribosomal RNA gene amplicon sequencing was used to examine the compositional differences in the lettuce root-associated microbiome when grown under low- and control-temperature conditions. Chilling temperatures significantly altered the lettuce root endosphere composition, whereas their effects were less severe in the rhizosphere and absent in the bulk soil. Several cold-enriched families were found in both the rhizosphere and the root endosphere, nine of which were Oxalobacteraceae, Pseudomonadaceae, Flavobacteriaceae, Microscillaceae, Sphingobacteriaceae, Comamonadaceae, Devosiaceae, Methylophilaceae and env.OPS_17. Concurrently, a collection of lettuce root-colonizing bacteria was established and, based on correlation with these families, representative isolates were screened. None of the lettuce root isolates showed growth-promoting effects but three growth-promoting Flavobacterium strains from an available collection of grass root-colonizing bacteria were identified. Amplicon sequence variant (ASV) annotation of the lettuce and grass strains revealed that strains matching cold-enriched or highly abundant ASVs in at least one soil promoted growth in the cold. Overall, our data demonstrate that microbiome analyses, combined with high-throughput bacterial isolations might be a helpful tool to isolate effective cold growth-promoting strains.
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- 2024
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29. Citizen science boosts fundamental and applied research for sustainable soybean cultivation in North‐Western Europe
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Lena Vlaminck, Birgit Vanden Berghen, Stien Mertens, Jurgen Wuyts, Liesbeth Aerts, Judith Van Dingenen, Sofie Bekaert, Steven Maere, Liesbet Vranken, and Sofie Goormachtig
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citizen science ,legumes ,plant‐based protein source ,soybean ,sustainable agriculture ,Environmental sciences ,GE1-350 ,Botany ,QK1-989 - Abstract
Societal Impact Statement To help save our planet, we need to shift to plant‐based protein food and enhance sustainable agricultural practices. Cultivation of legumes, including soybean, will be key because they produce protein‐rich beans without high applied fertilizer input. This complex challenge involves many stakeholders beyond the agricultural sector. In the ‘Soy in 1000 Gardens’ project, we engaged more than thousand citizens in a 6‐month gardening project aiming at facilitating sustainable soybean cultivation in Belgium. Our work shows that with the right approach, citizen science can provide insights to develop more sustainable agri‐food systems when integrated with fundamental and applied science. Summary The global food system faces numerous challenges in its pursuit of sustainability. Shifting to more plant‐based protein sources as well as transitioning to self‐reliant agri‐food systems is one way to meet these challenges. This transition requires the involvement of multiple stakeholders beyond the agricultural sector such as the citizens themselves. In this study, we employed a citizen science approach through the ‘Soy in 1000 Gardens’ project, which engaged more than 1000 citizen scientists in a 6‐month gardening project during which citizens not only observed plant growth but also executed plant growth measurements that meet scientific standards. We aimed at increasing the awareness about the power of soybean and its symbionts for sustainable plant protein production and at isolating efficient nitrogen‐fixing rhizobia to be used by local farmers to produce protein‐rich soybeans. The results suggest that the success of citizen science projects depends on the level of engagement and the provision of adequate support, among other factors. This study thus highlights the potential of citizen science to address complex challenges and contribute to more sustainable agri‐food systems when properly integrated. Unique in its scope, the project provided important insights into the drivers of participation, attrition and data quality.
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- 2024
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30. The use of information technology to improve interdisciplinary communication during infectious diseases ward rounds on the paediatric intensive care unit
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Jef Willems, Adeline Heyndrickx, Petra Schelstraete, Bram Gadeyne, Pieter De Cock, Stien Vandendriessche, and Pieter Depuydt
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Medicine ,Science - Abstract
Abstract Prospective audit with feedback during infectious diseases ward rounds (IDWR) is a common antimicrobial stewardship (AMS) practice on the Paediatric Intensive Care Unit (PICU). These interdisciplinary meetings rely on the quality of handover, with high risk of omission of information. We developed an electronic platform integrating infection-related patient data (COSARAPed). In the mixed PICU of a Belgian tertiary hospital we conducted an observational prospective cohort study comparing patient handovers during IDWRs using the COSARAPed-platform to those with access only to conventional resources. The quality of handover was investigated directly by assessment if the narrative was in accordance with Situation-Background-Assessment-Recommendation principles and if adequate demonstration of diagnostic information occurred, and also indirectly by registration if this was only achieved after intervention by the non-presenting AMS team members. We also recorded all AMS-recommendations. During a 6-month study period, 24 IDWRs and 82 patient presentations were assessed. We could only find a statistically significant advantage in favor of COSARAPed by indirect evaluation. We registered 92 AMS-recommendations, mainly resulting in reduced antibiotic pressure. We concluded that the IDWR is an appropriate platform for AMS on the PICU and that the utilisation of COSARAPed may enhance the quality of patient handover.
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- 2024
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31. The Connection Between Resistance Training, Climbing Performance, and Injury Prevention
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Atle Hole Saeterbakken, Nicolay Stien, Helene Pedersen, Kaja Langer, Suzanne Scott, Michail Lubomirov Michailov, Gudmund Gronhaug, Jiří Baláš, Tom Erik Jorung Solstad, and Vidar Andersen
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Bouldering performance ,Lead climbing ,Maximal strength ,Muscle hypertrophy ,Muscular power ,Local muscular endurance ,Sports medicine ,RC1200-1245 - Abstract
Abstract Background Climbing is an intricate sport composed of various disciplines, holds, styles, distances between holds, and levels of difficulty. In highly skilled climbers the potential for further strength-specific adaptations to increase performance may be marginal in elite climbers. With an eye on the upcoming 2024 Paris Olympics, more climbers are trying to maximize performance and improve training strategies. The relationships between muscular strength and climbing performance, as well as the role of strength in injury prevention, remain to be fully elucidated. This narrative review seeks to discuss the current literature regarding the effect of resistance training in improving maximal strength, muscle hypertrophy, muscular power, and local muscular endurance on climbing performance, and as a strategy to prevent injuries. Main Body Since sport climbing requires exerting forces against gravity to maintain grip and move the body along the route, it is generally accepted that a climber`s absolute and relative muscular strength are important for climbing performance. Performance characteristics of forearm flexor muscles (hang-time on ledge, force output, rate of force development, and oxidative capacity) discriminate between climbing performance level, climbing styles, and between climbers and non-climbers. Strength of the hand and wrist flexors, shoulders and upper limbs has gained much attention in the scientific literature, and it has been suggested that both general and specific strength training should be part of a climber`s training program. Furthermore, the ability to generate sub-maximal force in different work-rest ratios has proved useful, in examining finger flexor endurance capacity while trying to mimic real-world climbing demands. Importantly, fingers and shoulders are the most frequent injury locations in climbing. Due to the high mechanical stress and load on the finger flexors, fingerboard and campus board training should be limited in lower-graded climbers. Coaches should address, acknowledge, and screen for amenorrhea and disordered eating in climbers. Conclusion Structured low-volume high-resistance training, twice per week hanging from small ledges or a fingerboard, is a feasible approach for climbers. The current injury prevention training aims to increase the level of performance through building tolerance to performance-relevant load exposure and promoting this approach in the climbing field.
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- 2024
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32. Assessing present and future risk of water damage using building attributes, meteorology and topography
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Heinrich-Mertsching, Claudio, Wahl, Jens Christian, Ordonez, Alba, Stien, Marita, Elvsborg, John, Haug, Ola, and Thorarinsdottir, Thordis L.
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Statistics - Applications ,62P05 - Abstract
Weather-related risk makes the insurance industry inevitably concerned with climate and climate change. Buildings hit by pluvial flooding is a key manifestation of this risk, giving rise to compensations of the induced physical damages and business interruptions. In this work, we establish a nationwide, building-specific risk score for water damage associated with pluvial flooding in Norway. We fit a generalized additive model that relates the number of water damages to a wide range of explanatory variables that can be categorized into building attributes, climatological variables and topographical characteristics. The model assigns a risk score to every location in Norway, based on local topography and climate, which is not only useful for insurance companies, but also for city planning. Combining our model with an ensemble of climate projections allows us to project the (spatially varying) impacts of climate change on the risk of pluvial flooding towards the middle and end of the 21st century.
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- 2021
33. Evaluating a crowding intensity scale and welfare indicators for Atlantic salmon in sea cages
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Stien, Lars Helge, Nilsson, Jonatan, Noble, Chris, Izquierdo-Gomez, David, Ytteborg, Elisabeth, Timmerhaus, Gerrit, and Madaro, Angelico
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- 2024
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34. A review of information sources and analysis methods for data driven decision aids in child and adolescent mental health services
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Koochakpour, Kaban, Nytrø, Øystein, Leventhal, Bennett L., Sverre Westbye, Odd, Brox Røst, Thomas, Koposov, Roman, Frodl, Thomas, Clausen, Carolyn, Stien, Line, and Skokauskas, Norbert
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- 2024
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35. Sunscreen pollution is abated during the COVID-19 “Anthropause” of 2020 in two U.S. National Parks: Cape Lookout National Seashore and Kaloko-Honokōhau National Historical Park
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Downs, C.A., Akerlof, K.L., Stien, Didier, Rodrigues, Alice M.S., Diaz-Cruz, M. Silvia, Quintana, Gerard, and Fulton, Deborah
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- 2024
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36. Comparing physiological responses of acute and chronically stressed diploid and triploid Atlantic salmon (Salmo salar)
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Angelico Madaro, Floriana Lai, Per Gunnar Fjelldal, Tom Hansen, Virginie Gelebart, Brynjar Muren, Ivar Rønnestad, Rolf Erik Olsen, and Lars Helge Stien
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Unpredictable chronic stress ,ACTH ,Cortisol ,Pituitary ,Gene expression ,Aquaculture. Fisheries. Angling ,SH1-691 - Abstract
We compared the performance and physiological response of diploid and triploid Atlantic salmon (Salmo salar) following 21 days of either unpredictable chronic stress (UCS) or no disturbance (control). Thereafter, all four groups were challenged with a novel acute stressor consisting of crowding, netting and transfer into another tank. Growth was monitored during the 21-day period, and stress response to the novel acute stress challenge was assessed by blood chemistry parameters and pituitary gene expression. Plasma parameters were analyzed before (0) and 15, 30, 45, 60, 90, 120, 240, and 300 min after acute stress induction, whereas gene expression was analyzed at 0, 30, 60, 120, and 240 min. The results showed: a) similar growth rate and condition factor reductions from UCS in triploids and diploids, b) higher post-stress plasma Acth and cortisol levels in triploids compared with diploids, c) wider post-stress fluctuations in most of the other plasma parameters for triploids compared with diploids, particularly for glucose and lactate, d) pomca1, pomcb, crf-r1a and crf-r1b mRNA levels were more upregulated in control diploids than control triploids, and e) only minor changes in pituitary gene expression from UCS in both diploids and triploids, but with a noticeable upregulation of pomca2 and crf-r1a and crf-r1b in the triploids. Our results suggest that triploid Atlantic salmon have a higher energy cost in response to stress than diploids salmon. This can make them more sensitive to suboptimal conditions and episodes of acute and chronic stress.
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- 2024
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37. Økobevisst fotografi
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Hanne Hammer Stien and Marthe Tolnes Fjellestad
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Fine Arts - Abstract
Current practices of eco-conscious photography, informed by the ongoing climate crisis and post-humanist theory, share characteristics such as collectivity, co-creation, and pro- cess orientation. By way of examples from the UK and the Nordic region, we investigate how these aspects are made (in)visible within the framework of photographic institu- tions: artist-led organizations, photographic festivals, exhibitions, and museums. We ask what implications can, or even should, eco-conscious photography have for the ways researchers, curators and institutions think about and engage with photography, both as an image and a practice.
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- 2024
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38. Economic evidence of clinical decision support systems in mental health: A systematic literature review
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Line Stien, Carolyn Clausen, Inna Feldman, Bennett Leventhal, Roman Koposov, Kaban Koochakpour, Øystein Nytrø, Odd Sverre Westbye, Dipendra Pant, Thomas Brox Røst, and Norbert Skokauskas
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Mental health conditions are among the highest disease burden on society, affecting approximately 20% of children and adolescents at any point in time, with depression and anxiety being the leading causes of disability globally. To improve treatment outcomes, healthcare organizations turned to clinical decision support systems (CDSSs) that offer patient-specific diagnoses and recommendations. However, the economic impact of CDSS is limited, especially in child and adolescent mental health. This systematic literature review examined the economic impacts of CDSS implemented in mental health services. We planned to follow PRISMA reporting guidelines and found only one paper to describe health and economic outcomes. A randomized, controlled trial of 336 participants found that 60% of the intervention group and 32% of the control group achieved symptom reduction, i.e. a 50% decrease as per the Symptom Checklist-90-Revised (SCL-90-R), a method to evaluate psychological problems and identify symptoms. Analysis of the incremental cost-effectiveness ratio found that for every 1% of patients with a successful treatment result, it added €57 per year. There are not enough studies to draw conclusions about the cost-effectiveness in a mental health context. More studies on economic evaluations of the viability of CDSS within mental healthcare have the potential to contribute to patients and the larger society.
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- 2024
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39. Monitoring of drought stress and transpiration rate using proximal thermal and hyperspectral imaging in an indoor automated plant phenotyping platform
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Stien Mertens, Lennart Verbraeken, Heike Sprenger, Sam De Meyer, Kirin Demuynck, Bernard Cannoot, Julie Merchie, Jolien De Block, Jonathan T. Vogel, Wesley Bruce, Hilde Nelissen, Steven Maere, Dirk Inzé, and Nathalie Wuyts
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Maize ,Thermography ,Transpiration rate ,Phenotyping ,Hyperspectral ,Drought ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background Thermography is a popular tool to assess plant water-use behavior, as plant temperature is influenced by transpiration rate, and is commonly used in field experiments to detect plant water deficit. Its application in indoor automated phenotyping platforms is still limited and mainly focuses on differences in plant temperature between genotypes or treatments, instead of estimating stomatal conductance or transpiration rate. In this study, the transferability of commonly used thermography analysis protocols from the field to greenhouse phenotyping platforms was evaluated. In addition, the added value of combining thermal infrared (TIR) with hyperspectral imaging to monitor drought effects on plant transpiration rate (E) was evaluated. Results The sensitivity of commonly used TIR indices to detect drought-induced and genotypic differences in water status was investigated in eight maize inbred lines in the automated phenotyping platform PHENOVISION. Indices that normalized plant temperature for vapor pressure deficit and/or air temperature at the time of imaging were most sensitive to drought and could detect genotypic differences in the plants’ water-use behavior. However, these indices were not strongly correlated to stomatal conductance and E. The canopy temperature depression index, the crop water stress index and the simplified stomatal conductance index were more suitable to monitor these traits, and were consequently used to develop empirical E prediction models by combining them with hyperspectral indices and/or environmental variables. Different modeling strategies were evaluated, including single index-based, machine learning and mechanistic models. Model comparison showed that combining multiple TIR indices in a random forest model can improve E prediction accuracy, and that the contribution of the hyperspectral data is limited when multiple indices are used. However, the empirical models trained on one genotype were not transferable to all eight inbred lines. Conclusion Overall, this study demonstrates that existing TIR indices can be used to monitor drought stress and develop E prediction models in an indoor setup, as long as the indices normalize plant temperature for ambient air temperature or relative humidity.
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- 2023
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40. Guideline evaluation and implementation mechanisms in school health services (GuideMe): protocol for a hybrid randomized factorial trial
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Åse Sagatun, Thomas Engell, Malene Brekke, Hege Sjølie, Stine M. Ekornes, Kristin Sofie Waldum-Grevboe, Kristine Pape, Kirsti Kvaløy, Annette Jeneson, Anna Stigum Trøan, Anne Liv Askeland, Line Stien, and Solveig Holen
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Implementation strategies ,Implementation mechanisms ,Guideline ,School health services ,EPIS ,Multifactorial design ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Norwegian school health services received a national best-practice guideline in 2017. To promote healthy life skills and identify adolescents needing support, the guideline includes strong recommendations for individual consultations with all 8th graders and increased collaboration with schools. To help implement the recommendations, a blended implementation strategy (SchoolHealth) was co-created with school nurses, students, and stakeholders. SchoolHealth consists of three implementation elements: Digital dialog and administration tool (audit and feedback +), Dialog support (external consultation), and Collaboration materials (targeted dissemination). This hybrid study will test the main and combined effects of the elements on guideline fidelity and effectiveness. Methods The GuideMe study is a factorial cluster randomized controlled trial examining SchoolHealth's effectiveness on guideline fidelity and guideline effectiveness goals. Forty Norwegian secondary schools will be randomized to eight different combinations of the elements in SchoolHealth. Participants will include school nurses and school personnel from these schools, and 8th grade students (n = 1200). Primary outcomes are school nurses' fidelity to the guidelines and student's ability to cope with their life (i.e., health literacy, positive health behaviors and self-efficacy). Quantitative methods will be used to test effects and mechanisms, while mixed- and qualitative methods will be used to explore mechanisms, experiences, and other phenomena in depth. Participants will complete digital questionnaires at the start and end of the schoolyear, and after the consultation during the schoolyear. The study will run in two waves, each lasting for one school year. The multifactorial design allows testing of interactions and main effects due to equal distribution of all factors within each main effect. Sustainment and scale-up of optimized SchoolHealth elements using national infrastructure are simultaneously prepared. Discussion The study will investigate possible effects of the implementation elements in isolation and in combination, and hypothesized implementation mechanisms. In-depth study of user experiences will inform improvements to elements in SchoolHealth. The results will yield causal knowledge about implementation strategies and the mechanisms through which they assert effects. Mixed-methods will provide insights into how and when the elements work. Optimizing guideline implementation elements can support adolescents in a crucial life phase. Trail registration ISRCTN24173836. Registration date 8 August 2022.
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- 2023
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41. Comparing physiological responses of acute and chronically stressed diploid and triploid Atlantic salmon (Salmo salar)
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Madaro, Angelico, Lai, Floriana, Fjelldal, Per Gunnar, Hansen, Tom, Gelebart, Virginie, Muren, Brynjar, Rønnestad, Ivar, Olsen, Rolf Erik, and Stien, Lars Helge
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- 2024
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42. Efficiency of salmon production in submerged cages with air domes matches standard surface cages when environments are similar
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Warren-Myers, F., Folkedal, O., Vågseth, T., Stien, L.H., Fosse, J.O., Dempster, T., and Oppedal, F.
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- 2024
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43. Assessing the effect of sample bias correction in species distribution models
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Dubos, Nicolas, Préau, Clémentine, Lenormand, Maxime, Papuga, Guillaume, Montsarrat, Sophie, Denelle, Pierre, Louarn, Marine Le, Heremans, Stien, Roel, May, Roche, Philip, and Luque, Sandra
- Subjects
Quantitative Biology - Populations and Evolution ,Quantitative Biology - Quantitative Methods - Abstract
Open-source biodiversity databases contain a large amount of species occurrence records, but these are often spatially biased, which affects the reliability of species distribution models based on these records. Sample bias correction techniques include data filtering at the cost of record numbers or require considerable additional sampling effort. However, independent data are rarely available and assessment of the correction technique must rely on performance metrics computed with subsets of the only available (biased) data, which may be misleading. Here we assess the extent to which an acknowledged sample bias correction technique is likely to improve models' ability to predict species distributions in the absence of independent data. We assessed the variation in model predictions induced by the correction and model stochasticity. We present an index of the effect of correction relative to model stochasticity, the Relative Overlap Index (ROI). We tested whether the ROI better represented the effect of correction than classic performance metrics and absolute overlap metrics using 64 vertebrate species and 21 virtual species with a generated sample bias. When based on absolute overlaps and cross-validation performance metrics, we found no effect of correction, except for cAUC. When considering its effect relative to model stochasticity, the effect of correction depended on the site and the species. Virtual species enabled us to verify that the correction actually improved distribution predictions and the biological relevance of the selected variables at the sites with a clear gradient of sample bias, and when species distribution predictors are not correlated with sample bias patterns., Comment: 16 pages, 6 figures + Appendix
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- 2021
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44. Technological Evaluation of Fiber Effects in Wheat-Based Dough and Bread
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Celeste Verbeke, Els Debonne, Stien Versele, Filip Van Bockstaele, and Mia Eeckhout
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wheat dough ,wheat bread ,fiber substitution ,dough rheology ,bread quality ,texture ,Chemical technology ,TP1-1185 - Abstract
Dietary fiber incorporation in bread offers potential health benefits but poses challenges due to its impact on dough rheology and bread quality. This study evaluated the effects of pea, cocoa, and apple fiber on wheat-based dough and bread properties using rheological methods (farinograph, alveograph, pasting, and proofing) and baking trials. Substituting flour with fiber at 1%, 5%, or 10% increased water absorption and affected dough development, stability, and extensibility, particularly at high fiber concentrations. Pasting properties showed varying gelatinization behaviors influenced by fiber type and concentration. Principal component analysis (PCA) highlighted the clustering of dough and bread characteristics based on fiber concentration and type. At low fiber concentrations (up to 5% of flour replacement), negative effects were minimal, suggesting no need for comprehensive compositional analysis. However, high fiber concentrations (10%) introduced significant variability and complexity in dough properties. New farinographic parameters (FU4, FU6, FU8, FU10, and FU12) improved the explanatory power of PCA, enhancing the understanding of fiber-rich dough dynamics. The significant alterations in moisture content and texture underscore the intricate relationship between type of fiber, concentration, and dough functionality. Optimizing rheological parameters for fiber-enriched flour is crucial for adapting the bread-making process to produce high-quality bread with desired characteristics and enhanced nutritional benefits.
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- 2024
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45. Larval Competition between Aedes and Culex Mosquitoes Carries over to Higher Arboviral Infection during Their Adult Stage
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Adwine Vanslembrouck, Stephanie Jansen, Jacobus De Witte, Corneel Janssens, Stien Vereecken, Michelle Helms, Unchana Lange, Renke Lühken, Jonas Schmidt-Chanasit, Anna Heitmann, and Ruth Müller
- Subjects
Aedes albopictus ,Aedes japonicus ,arbovirus ,viral RNA titer ,chikungunya virus ,Culex pipiens ,Microbiology ,QR1-502 - Abstract
The common house mosquito (Culex pipiens) is a native vector for West Nile virus (WNV). Invasive species like the tiger mosquito (Aedes albopictus) and Asian bush mosquito (Aedes japonicus) are rapidly spreading through Europe, posing a major threat as vectors for dengue, chikungunya (CHIKV), and Japanese encephalitis virus (JEV). These mosquitoes share a similar ecological niche as larvae, but the carry-over effects of aquatic larval interactions to the terrestrial adult stage remain largely unknown and their medical relevance requires further investigation. This study examines the context dependency of larval interactions among Aedes albopictus, Aedes japonicus, and Culex pipiens. The survival, development time, growth, and energetic storage were measured in different European populations within density-response (intraspecific) experiments and replacement (interspecific) experiments at 20 °C and 26 °C. Overall, Ae. japonicus was the weakest competitor, while competition between Ae. albopictus and Cx. pipiens varied with temperature. Adults emerging from this larval competition were infected as follows: Culex pipiens with WNV, Ae. albopictus with CHIKV, and Ae. japonicus with JEV. While no JEV infection was observed, mosquitoes experiencing interspecific interactions during their larval stages exhibited higher infection rates and viral RNA titers for CHIKV and WNV. This increased susceptibility to viral infection after larval competition suggests a higher risk of arbovirus transmission in co-occurring populations.
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- 2024
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46. Temporal Transferability of Tree Species Classification in Temperate Forests with Sentinel-2 Time Series
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Margot Verhulst, Stien Heremans, Matthew B. Blaschko, and Ben Somers
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temperate forest ,tree species ,Sentinel-2 ,time series ,temporal transferability ,Science - Abstract
Detailed information on forest tree species is crucial to inform management and policy and support environmental and ecological research. Sentinel-2 imagery is useful for obtaining spatially explicit and frequent information on forest tree species due to its suitable spatial, spectral, and temporal resolutions. However, classification workflows often do not generalise well to time periods that are not seen by the model during the calibration phase. This study investigates the temporal transferability of dominant tree species classification. To this end, the Random Forest, Support Vector Machine, and Multilayer Perceptron algorithms were used to classify five tree species in Flanders (Belgium) with regularly spaced Sentinel-2 time series from 2018 to 2022. Cross-year single-year input scenarios were compared with same-year single-year input scenarios to quantify the temporal transferability of the five evaluated years. This resulted in a decrease in overall accuracy between 2.30 and 14.92 percentage points depending on the algorithm and evaluated year. Moreover, our results indicate that the cross-year classification performance could be improved by using multi-year training data, reducing the drop in overall accuracy. In some cases, gains in overall accuracy were even observed. This study highlights the importance of including interannual spectral variability during the training stage of tree species classification models to improve their ability to generalise in time.
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- 2024
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47. Challenges in Interpreting Norwegian Child and Adolescent Mental Health Records.
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Kaban Koochakpour, Frida Sofie Solheim, øystein Nytrø, Carolyn E. Clausen, Thomas Frodl, Roman Koposov, Bennett L. Leventhal, Dipendra Pant, Thomas Brox Røst, Line Stien, Odd Sverre Westbye, and Norbert Skokauskas
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- 2023
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48. Inleiding
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Vansteenkiste, Sarah, Steyaert, Greet, Hennaert, Stien, Hennau, Luc, Heerkens, Yvonne, Bieleman, André, Balm, Marcel, Steyaert, Greet, editor, Peel, Rebecca, editor, and Heerkens, Yvonne, editor
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- 2023
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49. Low spatial habitat overlap of herbivores in the High Arctic tundra
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Ravolainen, Virve, Paulsen, Ingrid M.G., Eischeid, Isabell, Forbey, Jennifer Sorensen, Fuglei, Eva, Hájek, Tomáš, Hansen, Brage B., Loe, Leif Egil, Macek, Petr, Madsen, Jesper, Soininen, Eeva M., Speed, James D.M., Stien, Audun, Tømmervik, Hans, and Pedersen, Åshild Ønvik
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- 2024
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50. Estimating the cumulative impact and zone of influence of anthropogenic features on biodiversity
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Bernardo Brandão Niebuhr, Bram Van Moorter, Audun Stien, Torkild Tveraa, Olav Strand, Knut Langeland, Per Sandström, Moudud Alam, Anna Skarin, and Manuela Panzacchi
- Subjects
Anthropocene ,cumulative effects ,distance‐weighting ,habitat loss ,habitat selection ,kernel density ,Ecology ,QH540-549.5 ,Evolution ,QH359-425 - Abstract
Abstract The concept of cumulative impacts is widespread in policy documents, regulations and ecological studies, but quantification methods are still evolving. Infrastructure development usually takes place in landscapes with preexisting anthropogenic features. Typically, their impact is determined by computing the distance to the nearest feature only, thus ignoring the potential cumulative impacts of multiple features. We propose the cumulative ZOI approach to assess whether and to what extent anthropogenic features lead to cumulative impacts. The approach estimates both effect size and zone of influence (ZOI) of anthropogenic features and allows for estimation of cumulative effects of multiple features distributed in the landscape. First, we use simulations and an empirical study to understand under which circumstances cumulative impacts arise. Second, we demonstrate the approach by estimating the cumulative impacts of tourist infrastructure in Norway on the habitat of wild reindeer (Rangifer t. tarandus), a near‐threatened species highly sensitive to anthropogenic disturbance. In the simulations, we showed that analyses based on the nearest feature and our cumulative approach are indistinguishable in two extreme cases: when features are few and scattered and their ZOI is small, and when features are clustered and their ZOI is large. The empirical analyses revealed cumulative impacts of private cabins and tourist resorts on reindeer, extending up to 10 and 20 km, with different decaying functions. Although the impact of an isolated private cabin was negligible, the cumulative impact of ‘cabin villages’ could be much larger than that of a single large tourist resort. Focusing on the nearest feature only underestimates the impact of ‘cabin villages’ on reindeer. The suggested approach allows us to quantify the magnitude and spatial extent of cumulative impacts of point, linear, and polygon features in a computationally efficient and flexible way and is implemented in the oneimpact R package. The formal framework offers the possibility to avoid widespread underestimations of anthropogenic impacts in ecological and impact assessment studies and can be applied to a wide range of spatial response variables, including habitat selection, population abundance, species richness and diversity, community dynamics and other ecological processes.
- Published
- 2023
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