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Ferris C, Purcell P, Gordon A, Larsen T, Vestergaard M. Performance of Holstein and Swedish-Red × Jersey/Holstein crossbred dairy cows within low- and medium-concentrate grassland-based systems. J Dairy Sci 2018; 101:7258-7273. [DOI: 10.3168/jds.2017-14107] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 03/18/2018] [Indexed: 11/19/2022]
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Larsen T, Urke HB, Holsen I, Anvik CH, Olsen T, Waldahl RH, Antonsen KM, Johnson R, Tobro M, Brastad B, Hansen TB. COMPLETE - a school-based intervention project to increase completion of upper secondary school in Norway: study protocol for a cluster randomized controlled trial. BMC Public Health 2018. [PMID: 29523124 PMCID: PMC5845360 DOI: 10.1186/s12889-018-5241-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Drop out from upper secondary school represents a risk for the future health and wellbeing of young people. Strengthening of psychosocial aspects of the learning environment may be an effective strategy to promote completion of upper secondary school. This paper is a study protocol of a school based cluster randomized controlled trial (RCT) evaluating two school-based interventions, namely the Dream School Program (DSP) and the Mental Health Support Team (MHST). The interventions aim to improve psychosocial learning environments and subsequently school achievements and decrease drop-out and absence. METHODS/DESIGN The COMPLETE RCT is aimed at youth in upper secondary school, grade 1 (age 15-16 years), and examines the effect of the combination of the DSP and the MHST; and the DSP only, compared with a comparison group on the following primary outcomes: student completion, presence, average grade, and self-reported mental health. Seventeen upper secondary schools from four counties in Norway were randomized to one of the three arms: 1) DSP and MHST; 2) DSP; and 3) comparison (offered DSP intervention in 2018/2019). The study will evaluate the interventions based on information from two cohorts of students (cohort 1 (C1) and cohort 2 (C2)). For C1, data was collected at baseline (August 2016), and at first follow-up seven months later. Second follow-up will be collected 19 months after baseline. For C2, data was collected at baseline (August 2017), and first and second follow-up will be collected similarly to that of C2 seven and 19 months respectively after baseline. Process evaluations based on focus groups, interviews and observation will be conducted twice (first completed spring 2017). DISCUSSION The COMPLETE trial is a large study that can provide useful knowledge about what interventions might effectively improve completion of upper secondary school. Its thorough process evaluation will provide critical information about barriers and points of improvement for optimizing intervention implementation. Findings can guide school development in the perspective of improving psychosocial learning environments and subsequent completion of upper secondary schooling. TRIAL REGISTRATION The trial was retrospectively registered in the ClinicalTrials.gov register on December 22.2017: NCT03382080 .
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Larsen T, Hausken T, Ystad S, Hovdenak N, Lied G. MON-P076: Low FODMAP Diet Improves Symptoms and Quality of Life in Patients with Radiation Induced Small Bowel Disease: A Pilot Study. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)31007-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Krawczel P, Ferneborg S, Wiking L, Dalsgaard T, Gregersen S, Black R, Larsen T, Agenäs S, Svennersten-Sjaunja K, Ternman E. Milking time and risk of over-milking can be decreased with early teat cup removal based on udder quarter milk flow without loss in milk yield. J Dairy Sci 2017; 100:6640-6647. [DOI: 10.3168/jds.2016-12312] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 04/20/2017] [Indexed: 11/19/2022]
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Larsen T, Doll JC, Loizeau F, Hosseini N, Peng AW, Fantner G, Ricci AJ, Pruitt BL. Rise Time Reduction of Thermal Actuators Operated in Air and Water through Optimized Pre-Shaped Open-Loop Driving. JOURNAL OF MICROMECHANICS AND MICROENGINEERING : STRUCTURES, DEVICES, AND SYSTEMS 2017; 27:045005. [PMID: 28989241 PMCID: PMC5625347 DOI: 10.1088/1361-6439/aa5fd2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Electrothermal actuators have many advantages compared to other actuators used in Micro-Electro-Mechanical Systems (MEMS). They are simple to design, easy to fabricate and provide large displacements at low voltages. Low voltages enable less stringent passivation requirements for operation in liquid. Despite these advantages, thermal actuation is typically limited to a few kHz bandwidth when using step inputs due to its intrinsic thermal time constant. However, the use of pre-shaped input signals offers a route for reducing the rise time of these actuators by orders of magnitude. We started with an electrothermally actuated cantilever having an initial 10-90% rise time of 85 μs in air and 234 μs in water for a standard open-loop step input. We experimentally characterized the linearity and frequency response of the cantilever when operated in air and water, allowing us to obtain transfer functions for the two cases. We used these transfer functions, along with functions describing desired reduced rise-time system responses, to numerically simulate the required input signals. Using these pre-shaped input signals, we improved the open-loop 10-90% rise time from 85 μs to 3 μs in air and from 234 μs to 5 μs in water, an improvement by a factor of 28 and 47, respectively. Using this simple control strategy for MEMS electrothermal actuators makes them an attractive alternative to other high speed micromechanical actuators such as piezoelectric stacks or electrostatic comb structures which are more complex to design, fabricate, or operate.
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Criscioni P, Marti J, Pérez-Baena I, Palomares J, Larsen T, Fernández C. Replacement of alfalfa hay ( Medicago sativa ) with maralfalfa hay ( Pennisetum sp.) in diets of lactating dairy goats. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hagve M, Gjessing P, Hole M, Jansen K, Fuskevag OM, Larsen T, Irtun Ø. SUN-LB258: Glucagon Like Peptide-1 Prevents Postoperative Peripheral Insulin Resistance Independently of Skeletal Muscle PI3K-AKT Activation. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30601-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Van Hoye A, Heuzé JP, Larsen T, Sarrazin P. Comparison of coaches' perceptions and officials guidance towards health promotion in French sport clubs: a mixed method study. HEALTH EDUCATION RESEARCH 2016; 31:328-338. [PMID: 27060789 DOI: 10.1093/her/cyw015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 03/17/2016] [Indexed: 06/05/2023]
Abstract
Despite the call to improve health promotion (HP) in sport clubs in the existing literature, little is known about sport clubs' organizational capacity. Grounded within the setting-based framework, this study compares HP activities and guidance among 10 football clubs. At least three grassroots coaches from each club (n = 68) completed the Health Promoting Sports Clubs scale to assess their perceptions of HP; an official (n = 10) was interviewed about club's activities and official's guidance provided to coaches. A concurrent embedded design with quantitative results guiding the qualitative analysis was used. Despite no significant differences regarding coaches' perceptions of HP between the 10 sport clubs, except for the policy dimension, officials' interviews revealed some contradictions. Sport participation was recognized as automatically promoting HP, meaning that sport practice entails many benefits, without questioning the nature of the activities. HP was considered as a secondary aim in regard to sport performance, leading to the lack of written policies, partnerships and sporadic HP activities. Future interventions should consider: (i) the creation of required policy and long-term vision; (ii) the link between HP and sport performance; (iii) the rootedness of sport clubs within their community and (iv) guidelines towards HP from sport federations.
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Silvestre M, Poppitt S, Liu A, Muirhead R, Fogelholm M, Larsen T, Raben A, Brand-Miller J. Prevention of diabetes through lifestyle intervention in Europe and the world [PREVIEW]: RCT update for NZ and Australia. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2016. [DOI: 10.1016/j.jnim.2015.12.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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McMahon KW, McCarthy MD, Sherwood OA, Larsen T, Guilderson TP. Millennial-scale plankton regime shifts in the subtropical North Pacific Ocean. Science 2015; 350:1530-3. [DOI: 10.1126/science.aaa9942] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 11/06/2015] [Indexed: 11/02/2022]
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Hagve M, Gjessing P, Hole M, Fuskevåg O, Larsen T, Irtun Ø. MON-PP271: A Perioperative Infusion of Glucagon Like Peptide 1 Diminishes Acute Surgery-Induced Insulin Resistance in Pigs. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30703-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sørensen L, Engberg R, Løvendahl P, Larsen T. Short communication: Effects of Bos taurus autosome 9-located quantitative trait loci haplotypes on enzymatic mastitis indicators of milk from dairy cows experimentally inoculated with Escherichia coli. J Dairy Sci 2015; 98:5440-7. [DOI: 10.3168/jds.2014-9071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/15/2015] [Indexed: 11/19/2022]
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Frederiksen RF, Yoshimura Y, Storgaard BG, Paspaliari DK, Petersen BO, Chen K, Larsen T, Duus JØ, Ingmer H, Bovin NV, Westerlind U, Blixt O, Palcic MM, Leisner JJ. A diverse range of bacterial and eukaryotic chitinases hydrolyzes the LacNAc (Galβ1-4GlcNAc) and LacdiNAc (GalNAcβ1-4GlcNAc) motifs found on vertebrate and insect cells. J Biol Chem 2015; 290:5354-66. [PMID: 25561735 PMCID: PMC4342453 DOI: 10.1074/jbc.m114.607291] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 01/05/2015] [Indexed: 12/22/2022] Open
Abstract
There is emerging evidence that chitinases have additional functions beyond degrading environmental chitin, such as involvement in innate and acquired immune responses, tissue remodeling, fibrosis, and serving as virulence factors of bacterial pathogens. We have recently shown that both the human chitotriosidase and a chitinase from Salmonella enterica serovar Typhimurium hydrolyze LacNAc from Galβ1-4GlcNAcβ-tetramethylrhodamine (LacNAc-TMR (Galβ1-4GlcNAcβ(CH2)8CONH(CH2)2NHCO-TMR)), a fluorescently labeled model substrate for glycans found in mammals. In this study we have examined the binding affinities of the Salmonella chitinase by carbohydrate microarray screening and found that it binds to a range of compounds, including five that contain LacNAc structures. We have further examined the hydrolytic specificity of this enzyme and chitinases from Sodalis glossinidius and Polysphondylium pallidum, which are phylogenetically related to the Salmonella chitinase, as well as unrelated chitinases from Listeria monocytogenes using the fluorescently labeled substrate analogs LacdiNAc-TMR (GalNAcβ1-4GlcNAcβ-TMR), LacNAc-TMR, and LacNAcβ1-6LacNAcβ-TMR. We found that all chitinases examined hydrolyzed LacdiNAc from the TMR aglycone to various degrees, whereas they were less active toward LacNAc-TMR conjugates. LacdiNAc is found in the mammalian glycome and is a common motif in invertebrate glycans. This substrate specificity was evident for chitinases of different phylogenetic origins. Three of the chitinases also hydrolyzed the β1-6 bond in LacNAcβ1-6LacNAcβ-TMR, an activity that is of potential importance in relation to mammalian glycans. The enzymatic affinities for these mammalian-like structures suggest additional functional roles of chitinases beyond chitin hydrolysis.
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Banck-Petersen P, Larsen T, Pedersen-Bjergaard U, Bie-Olsen L, Høi-Hansen T, Thorsteinsson B. Concerns about hypoglycaemia and late complications in patients with insulin-treated diabetes. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/edn.91] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Banck-Petersen P, Larsen T, Pedersen-Bjergaard U, Due-Andersen R, Høi-Hansen T, Thorsteinsson B. Adherence to guidelines for self-treatment of mild hypoglycaemia in type 1 diabetes. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/edn.71] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Larsen T, Banck-Petersen P, Due-Andersen R, Høi-Hansen T, Pedersen-Bjergaard U, Thorsteinsson B. Effect of carbohydrate treatment on mild symptomatic hypoglycaemia, assessed by continuous glucose monitoring. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/edn.61] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Van Hoye A, Larsen T, Sovik M, Wold B, Heuzé JP, Samdal O, Ommundsen Y, Sarrazin P. Evaluation of the Coaches Educators training implementation of the PAPA project: A comparison between Norway and France. Scand J Med Sci Sports 2014; 25:e539-46. [PMID: 25439237 DOI: 10.1111/sms.12352] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2014] [Indexed: 11/26/2022]
Abstract
This study cross-culturally compares the implementation process of the Empowering Coaching™ training program to grassroots coaches (GCs) by trained Coach Educators (CEs) from the Promoting Adolescent Physical Activity project in Norway and France. This program targets children's health through coach training to create a more positive environment. Using the RE-AIM framework, indicators of implementation processes at staff level were defined for adoption, implementation, and maintenance. CEs (n = 18) were interviewed about their professional use of the training, and video-filmed delivering the intervention trial workshops. GCs (n = 185) responded to a questionnaire after the workshops. Results showed that CEs were keen to participate in this project (16/18; 89%), to stay involved (12/16; 75%), and to diffuse the principles after the research project (12/12; 100%). CE training seemed effective as results indicated that CEs applied the principles of the program during the workshops and covered a high degree of the content (78%). Cross-cultural differences were found as the French Football Federation CE dropped out of the program, as Norwegian CEs delivered the content with higher fidelity and had higher enjoyment and pace scores than French CEs. More indicators are needed to use the RE-AIM framework for cross-cultural comparison.
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Yucel M, Braganza L, Murawski C, Lorenzetti V, Youssef G, Fontenelle L, Dowling N, Larsen T, O'Doherty J, Harrison B. SY38-3 * SIMILARITIES AND DIFFERENCES IN REWARD AND AVOIDANCE LEARNING IN OCD AND PROBLEM GAMBLERS. Alcohol Alcohol 2014. [DOI: 10.1093/alcalc/agu052.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nyman AK, Persson Waller K, Bennedsgaard T, Larsen T, Emanuelson U. Associations of udder-health indicators with cow factors and with intramammary infection in dairy cows. J Dairy Sci 2014; 97:5459-73. [DOI: 10.3168/jds.2013-7885] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 05/30/2014] [Indexed: 11/19/2022]
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Larsen T, Yoshimura Y, Voldborg BGR, Cazzamali G, Bovin NV, Westerlind U, Palcic MM, Leisner JJ. Human chitotriosidase CHIT1 cross reacts with mammalian-like substrates. FEBS Lett 2014; 588:746-51. [PMID: 24462685 DOI: 10.1016/j.febslet.2013.12.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 12/27/2013] [Accepted: 12/27/2013] [Indexed: 10/25/2022]
Abstract
Humans do not synthesize chitin, yet they produce a number of active and inactive chitinases. One of the active enzymes is chitotriosidase whose serum levels are elevated in a number of diseases such as Gaucher's disease and upon fungal infection. Since the biological role of chitotriosidase in disease pathogenesis is not understood we screened a panel of mammalian GlcNAc-containing glycoconjugates as alternate substrates. LacNAc and LacdiNAc-terminating substrates are hydrolyzed, the latter with a turnover comparable to that of pNP-chitotriose. Glycolipids or glycoproteins with LacNAc and LacdiNAc represent potential chitinase substrates and the subsequent alteration of glycosylation pattern could be a factor in disease pathogenesis.
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Larsen T, Lysholm E. To the Question of Post Operative Treatment of Mammary Cancer. Acta Radiol 2013. [DOI: 10.1177/028418512400300102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Larsen T, Christensen H. BETRACHTUNGEN, DURCH OSZILLOGRAPHISCHE MESSUNGEN GESTUTZT, UBER APPARATEN FUR DIE RONTGENDIAGNOSTIK. Acta Radiol 2013. [DOI: 10.1177/028418513902000606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schirmer H, Forsdahl SH, Lillevik SA, Larsen T, Trovik T, Iqbal A. Significant improvement over a year of diagnostic accuracy for coronary artery stenosis with low dose cardiac CT in 420 consecutively referred patients without previous coronary revascularisation. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Damgaard B, Weisbjerg M, Larsen T. Priming the cow for lactation by rapeseed supplementation in the dry period. J Dairy Sci 2013; 96:3652-61. [DOI: 10.3168/jds.2012-6055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 03/06/2013] [Indexed: 11/19/2022]
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Vlahu CA, Vogt L, Struijk DG, Vink H, Krediet RT, Kurita N, Fujii A, Kotera N, Tanaka M, Tanaka S, Miyairi T, Sugimoto T, Mori M, Fukuhara S, Mise N, Pasch A, Farese S, Schlieper G, Floege J, Uehlinger D, Jahnen-Dechent W, Mose FH, Vase H, Larsen T, Kancir ASP, Kosierkiewicz R, Jonczy B, Hansen AB, Oczachowska-Kulik AE, Thomsen IM, Bech JN, Pedersen EB, Selim G, Stojceva-Taneva O, Tozija L, Georgievska-Ismail L, Gelev S, Dzekova-Vidimliski P, Trajceska L, Petronievic Z, Sikole A. CKD pathophysiology and complications. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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