We derive here for the first time the equations that describe the combined motion and rotation of small prismatic dislocation loops in stress fields. When the applied torque is balanced by the self-torque of the loop, we show how the solution can be obtained for the loop orientation, and how this orientation affects the glide force on the loop.
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http://dx.doi.org/10.1103/PhysRevLett.92.085507 | DOI Listing |
J Chem Inf Model
January 2025
Department of Chemistry, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
Water dynamics are investigated in binary osmolyte-water mixtures, exhibiting a microscopic heterogeneity driven by molecular aggregation, on the basis of molecular dynamics (MD) simulation studies. The protecting osmolyte TMAO molecules in solution are evenly dispersed without the formation of noticeable osmolyte aggregates, while the denaturant TMU molecules aggregate readily, generating microscopic heterogeneity in the spatial distribution of component molecules in TMU-water mixtures. A combined study of MD simulation with graph theoretical analysis and spatial inhomogeneity measurement with -values in the two osmolyte solutions revealed that the translational and rotational motions of water in the microheterogeneous environment of TMU-water mixtures are less hindered than those in the homogeneous media of TMAO-water mixtures.
View Article and Find Full Text PDFSports Biomech
January 2025
Biomechanics & Motor Behavior Laboratory, Texas Woman's University, Denton, TX, USA.
Orientation angles are commonly used to describe complex angular motions of the body. Selecting the most appropriate rotation sequence for a given segment's motion is crucial. The purpose of this study was to develop a set of generalisable, primary axis-centric sequence selection strategies and to compare the lean direction-lean-rotation (LDLR) sequence, selected for thoracic motion during golf driving based on the strategies, with the conventional rotation-bend-side bend (RBSB) sequence in assessing the level of inter-angle cross-talk.
View Article and Find Full Text PDFFront Surg
January 2025
Department of Orthopedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, China.
Objective: To compare the efficacy of three treatment methods for older adult patients with osteoporotic proximal humerus fractures: proximal humerus locking plate (PHILOS) combined with calcium sulfate injection, PHILOS plate alone, and artificial hemi-shoulder joint replacement.
Methods: The clinical data of 48 older adult patients with osteoporotic proximal humerus fractures admitted to the Shoulder and Elbow Surgery Department of Zhongshan Hospital Affiliated with Dalian University from February 2018-August 2021 were retrospectively analyzed. The patients comprised 18 males and 30 females, with a mean age of (68.
Ann Chir Plast Esthet
January 2025
Department of Plastic and Reconstructive Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Republic of Korea.
Background: Unicortical plate fixation offers several theoretical advantages in the treatment of metacarpal shaft fractures compared to bicortical fixation. This approach avoids the potential hazard of excessive drilling into the volar cortex, thus minimizing damage to surrounding soft tissues and helping prevent complications related to improperly sized screws. These benefits prompted our team to conduct a preliminary clinical study to investigate the effectiveness and safety of this approach.
View Article and Find Full Text PDFMult Scler Relat Disord
January 2025
University of Health Sciences, Bakırköy Prof. Dr. Mazhar Osman Training and Research Hospital for Mental Health and Neurological Disorders, Department of Neurology, Istanbul, Türkiye. Electronic address:
Background: Multiple sclerosis (MS) patients frequently experience gait disturbances, which can be exacerbated in those with vestibular involvement. Various exercise approaches are available to address gait difficulties in this patient population, and the use of vestibular rehabilitation, in particular, has increased recently. However, the effects of this specific exercise approach on gait in MS patients remain unclear.
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