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An improved endwall-injection technique for examining high-temperature ignition of lubricating oils in shock tubes.
Rev Sci Instrum
January 2025
J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA.
Ignition of the lubricating fluid in a mechanical system is a highly undesirable and unsafe condition that can arise from the elevated temperatures and pressures to which the lubricant is subjected. It is therefore important to understand the fundamental chemistry behind its ignition to predict and prevent this condition. Lubricating oils, particularly those with a mineral oil base, are very complex mixtures of thousands of hydrocarbons.
View Article and Find Full Text PDFModeHunter: A Package for the Reductionist Analysis, Animation, and Application of Elastic Biomolecular Motion.
J Phys Chem B
January 2025
Department of Physiology and Biophysics, Weill Cornell Medical College, New York, New York 10065, United States.
ModeHunter is a modular Python software package for the simulation of 3D biophysical motion across spatial resolution scales using modal analysis of elastic networks. It has been curated from our in-house Python scripts over the last 15 years, with a focus on detecting similarities of elastic motion between atomic structures, coarse-grained graphs, and volumetric data obtained from biophysical or biomedical imaging origins, such as electron microscopy or tomography. With ModeHunter, normal modes of biophysical motion can be analyzed with various static visualization techniques or brought to life by dynamics animation in terms of single or multimode trajectories or decoy ensembles.
View Article and Find Full Text PDFSingle-particle tracking of polymer aggregates inside disordered porous media.
Nanoscale Adv
January 2025
Department of Modern Mechanical Engineering, Waseda University 3-4-1 Ookubo Shinhuku-ku Tokyo Japan
The diffusion motions of individual polymer aggregates in disordered porous media were visualized using the single-particle tracking (SPT) method because the motions inside porous media play important roles in various fields of science and engineering. In the aggregates diffused on the surfaces of pores, continuous adsorption and desorption processes were observed. The relationship between the size of the aggregates and pore size was analysed based on diffusion coefficients, moment scaling spectrum (MSS) slope analysis, and diffusion anisotropy analysis.
View Article and Find Full Text PDFAssessing neonatal nurses: transitioning preterm infants to oral feeding - a multicenter cross-sectional study.
BMC Nurs
January 2025
Department of Nursing Administration and Education, College of Nursing, Taibah University, Medina, Saudi Arabia.
Background: In Egypt, approximately 10% of preterm deliveries occur between 32 and fewer than 37 weeks, leading to high neonatal intensive care unit (NICU) admissions. Preterm infants often face oral feeding difficulties due to immature development, which can lead to extended hospital stays and increased health risks.
Aim: To assess neonatal nurses' performance in terms of the transition to oral feeding in preterm infants, focusing on knowledge, practices, and attitudes.
A cross-scale transfer learning framework: prediction of SOD activity from leaf microstructure to macroscopic hyperspectral imaging.
Plant Biotechnol J
January 2025
School of Wine & Horticulture, Ningxia University, Yinchuan, Ningxia, China.
Superoxide dismutase (SOD) plays an important role to respond in the defence against damage when tomato leaves are under different types of adversity stresses. This work employed microhyperspectral imaging (MHSI) and visible near-infrared (Vis-NIR) hyperspectral imaging (HSI) technologies to predict tomato leaf SOD activity. The macroscopic model of SOD activity in tomato leaves was constructed using the convolutional neural network in conjunction with the long and short-term temporal memory (CNN-LSTM) technique.
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