Results 11 to 20 of about 3,306 (94)
Journal of Advanced Nursing, Volume 77, Issue 4, Page 1825-1838, April 2021., 2021 Abstract Aim To analyse the interactions of associated factors with post stroke fatigue (PSF) after discharge home and determine the predictors of PSF and their impact on stroke survivors. Design A prospective observational study. Methods A total of 94 patients with acute stroke were recruited between May 2019 ‐July 2020. The main outcomes were fatigue,
Ya Su +7 more
wiley +1 more source
Evidence-Based Complementary and Alternative Medicine, Volume 2021, Issue 1, 2021., 2021 Background. Fatigue is one of the most common symptoms among breast cancer survivors. Although massage therapy has been commonly used for fatigue management, relevant evidence on the effectiveness of massage therapy for the reduction of fatigue in breast cancer survivors is still unclear. Objective.
Tao Wang +5 more
wiley +1 more source
Journal of Traumatic Stress, Volume 33, Issue 6, Page 1060-1070, December 2020., 2020 Abstract Survivors of traumatic events commonly suffer from long‐term pain and related somatic symptomatology. To test the predominant hypothesis that survivors’ pain comprises sequela of persistent posttraumatic stress symptoms (PTSS), we assessed the sequential order of symptom development among young survivors of a terrorist attack.
Synne Øien Stensland +4 more
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Journal of Advanced Nursing, Volume 76, Issue 11, Page 3104-3112, November 2020., 2020 Abstract Objectives To describe how Registered Nurses make use of a Clinical Decision Support System to triage calls to emergency medical dispatch centres, from the perspective of professional autonomy. Design The study had a descriptive design with a qualitative inductive approach.
Inger K. Holmström +4 more
wiley +1 more source
Risk, Hazards &Crisis in Public Policy, Volume 15, Issue 3, Page 347-373, September 2024.Abstract This study examines the impact of regulations and standard procedures on safety outcomes in unmanned aerial vehicle (UAV) operations, specifically focussing on Norwegian military UAV systems, from a high‐reliability organization (HRO) perspective. By analyzing data from existing regulations, accident reports, and interviews with military drone
Riana Steen +2 more
wiley +1 more source
Study on the tribological modification of benzoxazine resin [PDF]
, 2015 摘要 苯并噁嗪（BOZ）树脂是一类新型热固性酚醛树脂。研究表明，此类树脂合成工艺简单，耐热性能优异，高温下机械强度与双马来酰亚胺树脂接近，因此有望取代酚醛树脂成为新一代摩擦材料粘合剂。然而BOZ树脂及其复合材料的摩擦磨损性能研究尚处于起步阶段，对其在应用过程中的损耗开展的研究甚为不足。本文针对这种情况，开展了以下三方面工作：一是，研究了纯BOZ树脂摩擦磨损性能并分析了磨损机理；二是，利用碳纳米管改性BOZ树脂摩擦磨损性能；三是，在BOZ树脂及其玻璃纤维增强体系中加入钛酸钾晶须，以减小磨损。 首先 ...
羊宏山
core
Behavior of a Flexspline in Harmonic Drive [PDF]
, 1900 谐波齿轮传动是利用柔性工作构件的弹性变形波进行运动或者动力传递的一种新型传动方式，因其具有体积小、重量轻、精度高、单级传动比大、承载能力高等诸多优点，在航空航天、机器人、数控机床等领域得到了广泛的应用。柔轮作为谐波齿轮传动的关键构件很大程度上影响了谐波齿轮传动的承载能力、使用寿命等。柔轮为弹性薄壁件，在交变载荷作用下易导致齿面磨损和疲劳断裂。柔轮强度、变形与应力分析对谐波齿轮传动过程中的疲劳断裂评估及传动性能研究具有重要的意义。 本文首先根据已知参数、实际工况和谐波齿轮传动啮合参数选取原则 ...
刘淳剑
core
The influence of the electrical boundary condition on domain structures and electrocaloric effect of PbTiO3 nanostructures [PDF]
, 2016 本文在基于金兹堡—朗道—德文希尔唯象理论的相场法理论下，应用有限差分方法及四阶龙格—库塔法数值求解，研究不同电学边界条件对铁电纳米点畴结构演化和热电温度效应的影响。本文所用的中间电学边界条件，可以用来表示表面电极与纳米点之间的黏合情况及电极对表面电荷的补偿情况，进而说明退极化电场和退极化电能对系统自由能的影响，不同以往的对退极化能进行权重处理，具有实际的物理意义。 当电学参数λ0为0时，中间电学边界可以退化为开路电学边界条件；当λ0趋向无穷大时，对应于短路电学边界条件，即表面电荷可充分补偿。λ0的值越大，
陈志英
core +1 more source
Design and Simulation of Contact Fatigue Testing System of Flexspline and Circular Spline in Harmonic Drive [PDF]
, 2016 谐波齿轮传动是随着空间技术的发展而诞生的一种新型传动方式，其工作原理是利用柔轮的弹性变形波来实现运动或者动力传递，因其具有结构简单、传动精度高、传动比大等诸多优点，在航空、航天、机器人等领域得到了广泛应用。在谐波齿轮传动过程中，柔轮的运动情况比较复杂，作为弹性薄壁构件需承载交变应力，容易造成齿面磨损和疲劳断裂。因此，建立合适的模型对谐波齿轮传动过程中柔轮的错齿运动进行模拟分析具有重要意义。 本文首先针对谐波齿轮传动过程中柔轮的错齿运动设计了一种新的接触疲劳试验装置 ...
吴泽林
core
, 2003 铁电薄膜在交变电场下发生电疲劳现象是影响其商业应用的主要障碍,也是目前国内外研究的热点。本文从铁电薄膜电疲劳的影响因素 ...
张颖, 程璇, 陈志武
core +3 more sources