Results 61 to 70 of about 9,677 (255)

Mechanical coupling for high cyclic loading [PDF]

, 1974
One-piece cylindrical coupling with ""necked-down'' regions at each end form flexures allowing small misalignments between actuator and load. Coupling has zero backlash, low mass, close spacing between actuator and load, high stiffness in direction of ...
Dustin, M. O., Mehmed, O.
core   +1 more source

ExTrA: Exoplanets in Transit and their Atmospheres

, 2015
The ExTrA facility, located at La Silla observatory, will consist of a near-infrared multi-object spectrograph fed by three 60-cm telescopes. ExTrA will add the spectroscopic resolution to the traditional differential photometry method. This shall enable
Almenara, J. M., Bonfils, X., Delboulbé, A., Delfosse, X., Feautrier, P., Forveille, T., Gluck, L., Jocou, L., Kern, P., Lafrasse, S., Magnard, Y., Maurel, D., Moulin, T., Murgas, F., Rabou, P., Rochat, S., Roux, A., Stadler, E., Wunsche, A.   +18 more
core   +1 more source

Decellularized Extracellular Matrix (dECM) in Tendon Regeneration: A Comprehensive Review

Advanced Healthcare Materials, EarlyView.
Decellularized Extracellular Matrix (dECM) offers a promising solution by replicating the native tendon microenvironment and promoting regeneration. This review highlights advances in the decellularization methods, as well as their integration with emerging technologies and translational progress in tendon tissue engineering.
Kumaresan Sakthiabirami, Yeonwoo Park, Seong Kyeong Jo, Min Hee Kim, Jae Hwang Song   +4 more
wiley   +1 more source

Vibration Response of Small-caliber Vehicular Gun Tube with Gear Backlash

Jixie chuandong, 2015
Aiming at the study the vibration response frequency and its displacement of small-caliber vehicular gun tube,the simplified model of elevating mechanism including gear backlash is established and the method of parameter identification of contact-impact ...
Fan Chunlin, Qiu Xiaobo, Shan Dongsheng, Wang Yang   +3 more
doaj  

Engineered ETS1‐Nanoconjugate Restores Immune Homeostasis through Dual Immune‐Vascular Modulation in Relapsing and Progressive Multiple Sclerosis

Advanced Healthcare Materials, EarlyView.
The biomimetic nanoplatform IMNP (ETS1 pDNA/PBAE@ITP‐MM) undergoes targeted disassembly at inflammatory vascular sites to release the ETS1 plasmid (pETS1). This release initiates a cascade of effects that inhibit pathogenic pathways and support immune homeostasis. (Abbreviations: EndMT, endothelial‐to‐mesenchymal transition; EC, endothelial cell; TC, T
Feng Zhang, Si‐Bo Yang, Yan Luo, Xiao‐Di Sun, Bo‐Hao Chang, Da‐Qiang Zhou, Jun‐Jie Jiang, Ya‐Nan Li, Jie‐Hong Wu, Hui‐Juan Jin, Hang Yang, Hang Hu, Yi‐Fan Zhou, Bo Hu   +13 more
wiley   +1 more source

The Looming Dangers of Explosion in Community Transmissions of COVID-19 in Nigeria

Annals of Global Health, 2020
Currently, Nigeria is still at the ascending phase of the COVID-19 curve with no sign of deceleration. Thus, the recent decision by governors of states in northern Nigeria to deport Almajirai (itinerant Islamic school pupils) from their states as part of
Agaptus Nwozor, Charles Okolie, Onjefu Okidu, Segun Oshewolo   +3 more
doaj   +1 more source

Autonomous Hydrogel Actuators Programmed by Endogenous Biochemical Logic for Dual‐Stage Morphing and Drug Release

Advanced Materials, EarlyView.
A 3D‐printed BSA–PEGDA bilayer actuator performs biochemical logic, bending autonomously in acid and releasing its drug payload only when both acid and pepsin are present. This dual‐stage, enzyme‐gated mechanism enables autonomous catch‐and‐release motion and controlled gastric drug delivery, representing a programmable soft material powered by ...
Yuchen Liu, Harischandra Potthuri, Alejandro Sosnik, Luai R. Khoury   +3 more
wiley   +1 more source

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Design of a five-axis ultra-precision micro-milling machine—UltraMill. Part 1: Holistic design approach, design considerations and specifications [PDF]

, 2009
High-accuracy three-dimensional miniature components and microstructures are increasingly in demand in the sector of electro-optics, automotive, biotechnology, aerospace and information-technology industries.
B Denkena, CR Friedrich, Dehong Huo, E Kussul, ELJ Bohez, FC Chen, Frank Wardle, G Otten, H Li, H Weule, J Bryan, J Chae, Kai Cheng, KF Ehmann, M Tanaka, M Weck, N Ikawa, O Remus Tutunea-Fatan, P Schellekens, P Sriyotha, S Filiz, SW Lee, X Liu, Y Okazaki, Y Takeuchi, YB Bang   +25 more
core   +1 more source

Designing Defect Structure and Interfacial Strain in an Epitaxial VN Bilayer Film by Tailoring N Concentration

Advanced Materials Interfaces, EarlyView.
The N concentration in an epitaxial VN bilayer is tailored from overstoichiometric V0.49N0.51 to understoichiometric V0.56N0.44. Based on ab initio, diffraction, and microscopy data, the overstoichiometric V0.49N0.51 layer contains V vacancies, N Frenkel pairs, and a high density of dislocations.
Marcus Hans, Damian M. Holzapfel, Zhuo Chen, Soheil Karimi Aghda, Michal Fečík, Daniel Primetzhofer, Zaoli Zhang, Jochen M. Schneider   +7 more
wiley   +1 more source