Systems and procedures for locking doors after hours to prevent criminal and other intrusions may not necessarily provide the security they promise even if they are found operational during officer rounds. The authors describe an inspection program involving security and engineering which is used at their medical center to anticipate and test for the many unforeseen things which can compromise door security.
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Int J Biol Macromol
January 2025
School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, PR China; Shaanxi Province Key Laboratory of Corrosion and Protection, Xi'an University of Technology, Xi'an 710048, PR China. Electronic address:
Clavicle emergency fixation can prevent fractured end from piercing heart and lung organs, which is crucial for wounded life. Clavicle with complex structure, great individual differences, and adjacent to important organs, which places high-requirements on performance of fixation materials. Developing advanced clavicle fixation material is a prominent hot-topic in the field of emergency-engineering.
View Article and Find Full Text PDFJ Nanobiotechnology
November 2021
State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, P. R. China.
Sonodynamic therapy (SDT), presenting spatial and temporal control of ROS generation triggered by ultrasound field, has attracted considerable attention in tumor treatment. However, its therapeutic efficacy is severely hindered by the intrinsic hypoxia of solid tumor and the lack of smart design in material band structure. Here in study, fine α-FeO nanoparticles armored with Pt nanocrystals (α-FeO@Pt) was investigated as an alternative SDT agent with ingenious bandgap and structural design.
View Article and Find Full Text PDFBiol Rev Camb Philos Soc
August 2021
Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA, 19104, U.S.A.
Mollusc and brachiopod shells have served as biological armour for hundreds of millions of years. Studying shell strength in compression experiments can provide insights into macroevolution, predator-prey dynamics, and anthropogenic impacts on aquatic ecosystems. These studies have been conducted across fields including palaeontology, ecology, conservation biology and engineering using a range of techniques for a variety of purposes.
View Article and Find Full Text PDFMaterials (Basel)
February 2020
Wroclaw Center for Technology Transfer of Wroclaw University of Science and Technology, Smoluchowskiego 28, 50-372 Wroclaw, Poland.
The paper presents the results of studies on the effects of shooting composite materials produced by pressure infiltration with the EN AW-7075 alloy as a matrix and reinforcement in the form of preforms made of α-AlO particles. Composite materials were made with two reinforcement contents (i.e.
View Article and Find Full Text PDFUltrasonics
March 2020
Univ. Grenoble Alpes and CNRS, UMR 5588 LIPhy, F-38402 Grenoble, France.
In previous work, we have demonstrated the use of single-holed Armoured Microbubbles (AMBs) for microfluidic mixing and self-propulsion. AMBs are hollow partial spheres, inside which we capture a bubble. Under ultrasound, the bubble oscillates, generating a streaming flow with velocities of 1-100 mm/s in water.
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