A simple and rapid method is described for the introduction and stabilization of chronic indwelling cannulae in mice. Materials and adhesive bonding techniques commonly used in restorative dentistry were used to stabilize the cannulae. The effectiveness of this method was evaluated by shear strength testing across time and histological evaluation of coronal brain sections. Shear strength increased during the first week post surgery and remained stable for up to 60 days. The force required to dislodge the cannulae from skulls ranged from 0.70 to 2.45 kg. Histological evaluation revealed no significant infection or inflammatory response due to the materials used. Cannulae stabilization by this technique appears to be suitable for most experimental conditions.
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http://dx.doi.org/10.1016/s0165-0270(97)00158-1 | DOI Listing |
Sci Rep
January 2025
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, 100081, China.
Loess is extensively developed on both sides of the Longwu River, a tributary of the Yellow River, Tongren County, Qinghai Province. The engineering geological characteristics are complex, and landslide disasters are highly developed. Based on field geological surveys and physical property analysis of the loess in this area, this study analyzes the influence of water content, consolidation pressure, and soil disturbance on the dynamic characteristics of loess using GDS dynamic triaxial tests.
View Article and Find Full Text PDFUltrasound Med Biol
January 2025
School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan ROC; Center of Physical Therapy, National Taiwan University Hospital, Taipei, Taiwan ROC. Electronic address:
Objective: This study aimed to validate the ultrasound speckle tracking (UST) algorithm, determine the optimal probe location by comparing normalized cross-correlation (NCC) values of muscle displacement at two locations (proximal vs. middle) of the biceps femoris long head (BFlh) using the UST, and investigate the effects of Nordic hamstring curl exercise (NHE) training on BFlh displacement.
Methods: UST efficacy was verified with ex vivo uniaxial testing of porcine leg muscles.
Drug Dev Ind Pharm
January 2025
Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Jagiellonian University Medical College, ul. Medyczna 9, 30-688 Krakow, Poland.
Introduction: Liquisolid (LS) technology is particularly advantageous for poorly water-soluble drugs administered in very low doses because of the improved dissolution rate and superior content uniformity. However, there is a lack of research papers describing the application of this concept on an industrial scale. Thus, we present trials conducted to develop tablets containing 0.
View Article and Find Full Text PDFPlants (Basel)
January 2025
Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China.
Climate change has led to an increasing frequency of droughts, potentially undermining soil stability. In such a changing environment, the shallow reinforcement effect of plant roots often fails to meet expectations. This study aims to explore whether this is associated with the alteration of plant traits as a response to environmental change.
View Article and Find Full Text PDFPolymers (Basel)
January 2025
Green Chemistry & Materials Group, Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Republic of Korea.
This study explores the use of propylene oxide-modified ethylenediamine (PPO-EDA) as a novel crosslinker and chain extender in polyurethane (PU) adhesives. PPO-EDA was synthesized and compared with ,-dimethylethylenediamine (DMEDA) to assess its impact on mechanical properties and adhesion performance. Key parameters such as NCO conversion, tensile strength, and lap shear strength were thoroughly evaluated.
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