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Page 1
Prevention strategies and modifiable risk factors for sport-related concussions and head impacts: a systematic review and meta-analysis.
Eliason PH, Galarneau JM, Kolstad AT, Pankow MP, West SW, Bailey S, Miutz L, Black AM, Broglio SP, Davis GA, Hagel BE, Smirl JD, Stokes KA, Takagi M, Tucker R, Webborn N, Zemek R, Hayden A, Schneider KJ, Emery CA. Eliason PH, et al. Br J Sports Med. 2023 Jun;57(12):749-761. doi: 10.1136/bjsports-2022-106656. Br J Sports Med. 2023. PMID: 37316182
Meta-analyses demonstrated a protective effect of mouthguards in collision sports (incidence rate ratio, IRR 0.74; 95% CI 0.64 to 0.89). Policy disallowing bodychecking in child and adolescent ice hockey was associated with a 58% lower concussion rate compared with bodyche …
Meta-analyses demonstrated a protective effect of mouthguards in collision sports (incidence rate ratio, IRR 0.74; 95% CI 0.64 to 0.8 …
Mathematical model and characteristics analysis of crossed-axis helical gear drive with small angle based on curve contact element.
Liang D, Meng S, Tan R. Liang D, et al. Sci Prog. 2021 Apr-Jun;104(2):368504211016202. doi: 10.1177/00368504211016202. Sci Prog. 2021. PMID: 33971758 Free PMC article.
To improve load capacity and transmission characteristics of crossed-axis helical gear drive, a generation approach of the gear pair with small-angle based on the curve contact element is proposed. ...According to gear geometry and finite element metho …
To improve load capacity and transmission characteristics of crossed-axis helical gear drive, a generation approach of the gear …
Maize harvester gearbox design modification for improved fatigue life.
Kim JT, Lee HS, Park JH, Woo JK, Choi IS, Kim YK, Cho SJ, Ha CS, Park YJ. Kim JT, et al. Sci Rep. 2022 Sep 16;12(1):15576. doi: 10.1038/s41598-022-19982-z. Sci Rep. 2022. PMID: 36114274 Free PMC article.
The gearbox has the advantage of being able to change the torque and rotational speed according to the gear ratio and has high power transmission efficiency by transmitting power through the contact of the gear pair. ...As a result of design modificati …
The gearbox has the advantage of being able to change the torque and rotational speed according to the gear ratio and has high …
In Situ Contact Analysis of Polyetheretherketone under Elastohydrodynamic Lubrication.
Hofmann S, Maier E, Lohner T. Hofmann S, et al. Polymers (Basel). 2022 Oct 18;14(20):4398. doi: 10.3390/polym14204398. Polymers (Basel). 2022. PMID: 36297974 Free PMC article.
Pressure measurements reveal a typical hydrodynamic profile in combination with a large deformation of the contact zone. The influence of speed and slip ratio is thereby negligible. ...In general, the heat generation is governed by shearing and backflow in the co …
Pressure measurements reveal a typical hydrodynamic profile in combination with a large deformation of the contact zone. The influenc …
What strategies can be used to effectively reduce the risk of concussion in sport? A systematic review.
Emery CA, Black AM, Kolstad A, Martinez G, Nettel-Aguirre A, Engebretsen L, Johnston K, Kissick J, Maddocks D, Tator C, Aubry M, Dvořák J, Nagahiro S, Schneider K. Emery CA, et al. Br J Sports Med. 2017 Jun;51(12):978-984. doi: 10.1136/bjsports-2016-097452. Epub 2017 Mar 2. Br J Sports Med. 2017. PMID: 28254746 Review.
Meta-analyses demonstrate a combined effect of a 70% reduction (incidence rate ratio (IRR)=0.3 (95% CI: 0.22 to 0.41)) in concussion risk in youth ice hockey leagues where policy disallows body checking, and the point estimate (IRR=0.8 (95% CI: 0.6 to 1.1)) suggests a prot …
Meta-analyses demonstrate a combined effect of a 70% reduction (incidence rate ratio (IRR)=0.3 (95% CI: 0.22 to 0.41)) in concussion …
Compound Fault Characteristic Analysis for Fault Diagnosis of a Planetary Gear Train.
Ren Y, Li G, Li X, Zhang J, Liu R, Shi S. Ren Y, et al. Sensors (Basel). 2024 Jan 31;24(3):927. doi: 10.3390/s24030927. Sensors (Basel). 2024. PMID: 38339647 Free PMC article.
The carrier eccentricity error and gear compound faults are most likely to occur simultaneously in an actual planetary gear train (PGT). ...In order to analyze the joint effect of the error and the compound faults in a PGT, a carrier eccentricity error model is prop …
The carrier eccentricity error and gear compound faults are most likely to occur simultaneously in an actual planetary gear tr …
The acoustic emission from asperity interactions in mixed lubrication.
Hutt S, Clarke A, Pullin R, Evans HP. Hutt S, et al. Proc Math Phys Eng Sci. 2019 Jul;475(2227):20180900. doi: 10.1098/rspa.2018.0900. Epub 2019 Jul 10. Proc Math Phys Eng Sci. 2019. PMID: 31423088 Free PMC article.
Researchers have asserted that asperity interactions are the predominant cause of acoustic emission (AE) in healthy gear contacts. However, direct experiments on gears have yet to yield a clear relationship between the Asperity AE (AAE) and lambda ratio, this …
Researchers have asserted that asperity interactions are the predominant cause of acoustic emission (AE) in healthy gear contacts …
Coating of TPU-PDMS-TMS on Polycotton Fabrics for Versatile Protection.
Moiz A, Padhye R, Wang X. Moiz A, et al. Polymers (Basel). 2017 Nov 30;9(12):660. doi: 10.3390/polym9120660. Polymers (Basel). 2017. PMID: 30965962 Free PMC article.
The TPU-PDMS-TMS (TPT) coated fabrics showed a high hydrophobic surface with a high water contact angle of 142, and the coating was durable against different cycles of laundering and crocking. ...The coating technology developed can be further applied in protective clothin …
The TPU-PDMS-TMS (TPT) coated fabrics showed a high hydrophobic surface with a high water contact angle of 142, and the coating was d …
Variable gearing during locomotion in the human musculoskeletal system.
Carrier DR, Heglund NC, Earls KD. Carrier DR, et al. Science. 1994 Jul 29;265(5172):651-3. doi: 10.1126/science.8036513. Science. 1994. PMID: 8036513
Human feet and toes provide a mechanism for changing the gear ratio of the ankle extensor muscles during a running step. A variable gear ratio could enhance muscle performance during constant-speed running by applying a more effective prestretch during …
Human feet and toes provide a mechanism for changing the gear ratio of the ankle extensor muscles during a running step. A var …
Risk Factors for Requiring a Revision Anterior Cruciate Ligament Reconstruction: A Case-Control Study.
Pierce TP, Kurowicki J, Kelly JJ, Issa K, Festa A, McInerney VK, Scillia AJ. Pierce TP, et al. J Knee Surg. 2021 Jul;34(8):859-863. doi: 10.1055/s-0039-3402075. Epub 2019 Dec 30. J Knee Surg. 2021. PMID: 31887765
Therefore, the purpose of this study was to assess the potential role of (1) demographics, (2) family history, (3) graft choice, (4) sport, and (5) mechanism of injury (contact vs. noncontact) in the risk for needing a revision ACL for improved clinical outcomes. ...There …
Therefore, the purpose of this study was to assess the potential role of (1) demographics, (2) family history, (3) graft choice, (4) sport, …
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