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Karlsson, Kare J.,Niemela, Patrik H.,Jonsson, Anders R.,Tornhage, Carl-Johan A. Occupational Safety and Health Research Institute 2016 Safety and health at work Vol.7 No.1
Background: Previous research has shown that paramedics are exposed to risks in the form of injuries to the musculoskeletal system. In addition, there are studies showing that they are also at increased risk of cardiovascular disease, cancer, and psychiatric diseases, which can partly be explained by their constant exposure to stress. The aim of this study is to evaluate whether the use of shoulder straps decreases physical effort in the form of decreased heart rate and cortisol concentration. Methods: A stretcher with a dummy was carried by 20 participants for 400 m on two occasions, one with and one without the shoulder straps. Heart rate was monitored continuously and cortisol samples were taken at intervals of 0 minutes, 15 minutes, 30 minutes, 45 minutes, and 60 minutes. Each participant was her or his own control. Results: A significant decrease in heart rate and cortisol concentration was seen when shoulder straps were used. The median values for men (with shoulder straps) at 0 minutes was 78 bpm/21.1 nmol/L (heart rate/cortisol concentration), at 15 minutes was 85 bpm/16.9 nmol/L, and at 60 minutes was 76 bpm/15.7 nmol/L; for men without shoulder straps, these values were 78 bpm/21.9 nmol/L, 93 bpm/21.9 nmol/L, and 73 bpm/20.5 nmol/L. For women, the values were 85 bpm/23.3 nmol/L, 92 bpm/20.8 nmol/L, and 70 bpm/18.4 nmol/L and 84 bpm/32.4 nmol/L, 100 bpm/32.5 nmol/L, and 75 bpm/25.2 nmol/L, respectively. Conclusion: The use of shoulder straps decreases measurable physical stress and should therefore be implemented when heavy equipment or a stretcher needs to be carried. An easy way to ensure that staff use these or similar lifting aids is to provide them with personalized, well-adapted shoulder straps. Another better option would be to routinely sewn these straps into the staff's personal alarm jackets so they are always in place and ready to be used.
Chae, J. w.,Teo, Y. L.,Ho, H. K.,Lee, J.,Back, H. m.,Yun, H. y.,Karlsson, M. O.,Kwon, K. i.,Chan, A. Springer Science + Business Media 2016 Cancer chemotherapy and pharmacology Vol.78 No.3
<P>An attenuated dosing (AD) sunitinib regimen of 37.5 mg daily has been suggested to reduce the toxicity reported with the standard dosing regimen to metastatic renal cell carcinoma (mRCC) patients. The aim of this study was to characterize the population pharmacokinetic (PK) properties of sunitinib and SU12662, the active metabolite, in patients receiving the AD regimen and to ascertain significant covariates influencing PK parameters. Thirty-one mRCC patients receiving AD sunitinib regimen were included. Plasma samples were collected on day 29 of each treatment cycle after the start of the therapy. Nonlinear mixed-effects modeling was applied to estimate the population PK properties of sunitinib and SU12662 as well as the effect of covariates on PK parameters. Monte Carlo simulation was also performed to predict the total trough level (TTL) of sunitinib and SU12662. Sunitinib population means for CL/F and V (d) /F (central) were 13.8 L/h and 1720 L, respectively. SU12662 population means for CL/F and V (d) /F were 42.1 L/h and 1410 L, respectively. Body surface area (BSA) and ABCB1 polymorphism significantly influenced the CL/F variability of sunitinib: CL/F (parent) = 13.8 x exp((BSA - 1.75) x 2.08 + (ABCB1 (genotype) - 0.67) x 0.61), ABCB1-0: wild genotype, 1: mutant genotype. The effect size of ABCB1 mutant genotype and BSA greater than 1.75 m(2) in relation to sunitinib clearance was 31.14 % (p = 0.006) and 22.11 % (p = 0.011), respectively, relative to the reference group. Adjusting doses of sunitinib according to BSA and ABCB1 polymorphism in Asian mRCC patients may be recommended for sufficient attainment of a target TTL of sunitinib and its metabolite.</P>
Kare J. Karlsson,Patrik H. Niemela,Anders R. Jonsson,Carl-Johan A. Tornhage 한국산업안전보건공단 산업안전보건연구원 2016 Safety and health at work Vol.7 No.1
Background: Previous research has shown that paramedics are exposed to risks in the form of injuries to the musculoskeletal system. In addition, there are studies showing that they are also at increased risk of cardiovascular disease, cancer, and psychiatric diseases, which can partly be explained by their constant exposure to stress. The aim of this study is to evaluate whether the use of shoulder straps decreases physical effort in the form of decreased heart rate and cortisol concentration. Methods: A stretcher with a dummy was carried by 20 participants for 400 m on two occasions, one with and one without the shoulder straps. Heart rate was monitored continuously and cortisol samples were taken at intervals of 0 minutes, 15 minutes, 30 minutes, 45 minutes, and 60 minutes. Each participant was her or his own control. Results: A significant decrease in heart rate and cortisol concentration was seen when shoulder straps were used. The median values for men (with shoulder straps) at 0 minutes was 78 bpm/21.1 nmol/L (heart rate/cortisol concentration), at 15 minutes was 85 bpm/16.9 nmol/L, and at 60 minutes was 76 bpm/15.7 nmol/L; for men without shoulder straps, these values were 78 bpm/21.9 nmol/L, 93 bpm/ 21.9 nmol/L, and 73 bpm/20.5 nmol/L. For women, the values were 85 bpm/23.3 nmol/L, 92 bpm/ 20.8 nmol/L, and 70 bpm/18.4 nmol/L and 84 bpm/32.4 nmol/L, 100 bpm/32.5 nmol/L, and 75 bpm/ 25.2 nmol/L, respectively. Conclusion: The use of shoulder straps decreases measurable physical stress and should therefore be implemented when heavy equipment or a stretcher needs to be carried. An easy way to ensure that staff use these or similar lifting aids is to provide them with personalized, well-adapted shoulder straps. Another better option would be to routinely sewn these straps into the staff’s personal alarm jackets so they are always in place and ready to be used.
Ding Jun,Anette M. Karlsson,K.J. Kang 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
Displacement instability of the thermally grown oxide (TGO) is a fundamental source of failure in some thermal barrier systems. In this work, a finite element analysis has been performed to simulate the displacement instability occurred at a heat resistant metal with superficial TGO exposed to thermal cycling. Lateral and in-plane growth of the TGO which happen during high temperature are also simulated by means of material property change from the substrate metal to the TGO. Assumptions and referring about the material properties are minimized for rigorous reality. Most of the material properties including the TGO growth are based on the experimental results obtained in-house. Good agreement with the experimental observations proves the accuracy and validity of this simulation, which will be useful for future works on more complicated phenomena such as deformation under thermo-mechanical cycling.
Toward Global Harmonization of Derived Cloud Products
Wu, Dong L.,Baum, Bryan A.,Choi, Yong-Sang,Foster, Michael J.,Karlsson, Karl-Gö,ran,Heidinger, Andrew,Poulsen, Caroline,Pavolonis, Michael,Riedi, Jé,rô,me,Roebeling, Robert,Sherwood, St American Meteorological Society 2017 Bulletin of the American Meteorological Society Vol.98 No.2