Results 131 to 140 of about 11,920 (307)

Conceptual design of pointing control systems for space station gimballed payloads [PDF]

A conceptual design of the control system for Payload Pointing Systems (PPS) is developed using classic Proportional-Integral-Derivatives (PID) techniques.
Hughes, Robert O.
core   +1 more source

Proteins, Processing, and Properties of Adhesive Fluid Condensates Purified from Mussels

Advanced Functional Materials, EarlyView.
Mussels exhibit an unmatched proficiency for adhering to wet surfaces in salty environments—a remarkable ability that could inspire new biomedical and technical glues. The fluid protein condensates used to form the underwater mussel glue are extracted, reconstituted and characterized with advanced spectroscopy and nanomechanical analysis, revealing ...
Mathieu D. Rivard, Max Renner‐Rao, Nahid Hassanpour, Franziska Jehle, Chang‐Sheng Wang, Duy Anh Pham, Daniel J. Jackson, Xavier Banquy, Matthew J. Harrington   +8 more
wiley   +1 more source

RESEARCH ON ELASTIC-RING ISOLATOR’S DAMPING BASED ON PIEZOELECTRIC SHUNT DAMPING TECHNIQUE

Jixie qiangdu, 2015
To analyze the present problems of the elastic-ring isolator,such as the unideal damping effect,the unadjustable damping and so on,the piezoelectric shunt damping technique was adopted to study the vibration control performance of the elastic ring.Using ...
YIN Shuang, WEN LiHua, LIU Yong
doaj  

Magnetic suspension systems for space applications [PDF]

An overview of techniques is presented used in the described magnetic suspension systems. Also a review is presented of the systems already developed, which demonstrate the usefulness, applicability, and flight readiness of magnetic suspension to a broad
Havenhill, Douglas G., Wolke, Patrick J.
core   +1 more source

An Ionic Gelation Powder for Ultrafast Hemostasis and Accelerated Wound Healing

Advanced Functional Materials, EarlyView.
An ultrafast ionic gelation‐activated hemostatic powder (AGCL) forms a hydrogel within ≈1 s upon contact with blood‐derived calcium ions. The AGCL powder enables rapid hemorrhage control, strong tissue adhesion, and enhanced healing. The powder's pre‐crosslinked polymer network ensures high blood uptake and stability, offering effective treatment for ...
Youngju Son, Kyusoon Pak, Taehoon Lee, Monica Celine Prayogo, Jinyoung Choi, Sukkyung Kang, Minjoo Kang, Byungkook Oh, Sang Yu Sun, Sanha Kim, Sung Gap Im, Sangyong Jon, Steve Park   +12 more
wiley   +1 more source

Mechanical design and test of a broadband ring meta-structure isolator for seawater pump

Jixie qiangdu
Addressing the rotational vibration issues encountered during the operation of seawater pumps, and integrating measured vibration characteristics, a quasi-zero stiffness ring meta-structure isolator was designed for vibration control based on the ...
LIU Haiping, WANG Zhe, ZHOU Shikun, ZHENG Lifang   +3 more
doaj  

Modeling of dynamic characteristics of a nonlinear oscillatory system with a magnetic spring. Part 1

Electrical engineering & Electromechanics, 2014
A passive magnetic vibration isolator (a magnetic spring) with cylindrical magnets is considered. A mathematical model is developed to calculate magnetic spring magnetic field and force.
R.P. Bondar, I.S. Chebotarun, A.D. Podoltsev   +2 more
doaj  

A magnetic isolation and pointing system for the astrometric telescope facility [PDF]

The astrometric telescope facility (ATF), a 20-meter telescope designed for long-term detection and observation of planetary systems outside of the solar system, is scheduled to be a major user of the Space Station's payload pointing system (PPS ...
Hibble, William, Smith, Marcie, Wolke, Patrick J.   +2 more
core   +1 more source

A Programmable Semiconductor Containing Active Molecular Photoswitches Located in the Crystal's Volume Phase

Advanced Functional Materials, EarlyView.
A novel approach for the design of functional semiconductors is presented, which utilizes the excellent optoelectronic properties of layered hybrid perovskites and the possibility to introduce a molecular photoswitch as the organic spacer. This concept is successfully demonstrated on a coumarin‐based system with the possibility to change the bandgap ...
Oliver Treske, Yaşar Krysiak, Hans Tornatzky, Markus R. Wagner, Sebastian Polarz   +4 more
wiley   +1 more source

Laser‐Microscribed Glass Enables Surface‐Microfluidics‐Facilitated, Affordable, Rapid Cancer Diagnosis

Advanced Functional Materials, EarlyView.
A transparent, laser‐microscribed glass platform enables cancer diagnosis within 1 h—much faster than histology, which takes days, and free from the chemical or contrast risks of MRI or CT scans. The antibody‐functionalized rough glass surface captures viable cancer cells directly from suspension, allowing instant optical readout and offering a rapid ...
Anish Pal, Snehasis Mishra, Arani Mukhopadhyay, Ilias Papailias, Atique U. Ahmed, Constantine M. Megaridis   +5 more
wiley   +1 more source