Results 131 to 140 of about 197,539 (295)
Advanced Science, EarlyView.This work introduces a theragenerative 3D‐printed biodegradable stent with Janus nanoarchitecture for spatially controlled vascular healing. A luminal tantalum ion–implanted surface accelerates endothelialization and hemocompatibility, while an abluminal sirolimus/poly‐L‐lactic acid–tantalum layer provides sustained drug release and suppresses smooth ...
Jong Hwa Seo +19 more
wiley +1 more source
Engineering ProceedingsMany actuating and electro-mechanical devices are driven by DC motors. Gear trains are used to amplify the torque in these motors. They are used in a wide variety of automotives, robotics, and automation applications. However, gears are prone to backlash
Aisha Akbar Awan, Umar S. Khan
doaj +1 more source
Reversible motion drive system Patent [PDF]
, 1970 Drive system for parabolic tracking antenna with reversible motion and minimal ...
Richter, H. L., Stoller, F. W.
core +1 more source
Advanced Science, EarlyView.This review explores how hemoglobin‐based oxygen carriers (HBOCs) combined with nanozymes create multifunctional materials that deliver oxygen while maintaining redox homeostasis. Beyond artificial blood substitutes, these constructs enable wound healing with light‐triggered oxygen release, cancer therapy through enhanced oxygenation and reactive ...
Despoina Douka +4 more
wiley +1 more source
Jixie chuandong, 2012 The backlash of the filter gear using for aerospace can be influenced by the extreme environment,and the size of the backlash is one of the most important factors that influence gear transmission accuracy.Based on the thermal equilibrium and heat ...
马玲, 王家序, 陈杰, 韩念龙
doaj
Advanced Science, EarlyView.In this work, a bioinspired all‐in‐one underwater quality evaluation metamaterial, combining sound attenuation, diffuse reflection, and mechanical robustness, is proposed based on jumping spider locomotion and human skeletal biomechanics. Meanwhile, a CNN‑driven quality evaluation framework is established for theoretically dimension‐reduced ...
Hongze Li +8 more
wiley +1 more source
Hydraulic system provides smooth control of large tracking and antenna drive systems at very low tracking rates [PDF]
, 1967 Hydraulic system provides smooth control of large tracking and antenna drive systems at very low tracking rates. This configuration modifies a series connection of the drive motors with compensating orifices to offset the effects of drain line loss ...
Parker, G. L.
core +1 more source
Advanced Science, EarlyView.Inspired by natural amino acid polymer‐melanin systems, this study strategically incorporated tellurocysteine to develop advanced radiation‐shielding materials. This approach transformed the primary interaction mechanism between melanin‐based materials and incident photons from Compton scattering to the photoelectric effect. Tellurocysteine‐polymerized
Wei Chen +6 more
wiley +1 more source
What are the Best Practices to Assess Leadership Effectiveness? [PDF]
, 2015 [Excerpt] Great leadership makes employees devote more energy to their job and yield good performances. Since leadership is vital to managing an organization, all organizations always need to assess how well leaders exercise that leadership over their ...
Jin, Sanghoon, Kang, Seoung Kil
core +1 more source
Light‑Driven Propulsion of Graphene Aerogels in Microgravity
Advanced Science, EarlyView.Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab +10 more
wiley +1 more source