Results 21 to 30 of about 125,489 (316)

Studies on thrust characteristics of high‐thrust spiral motor

Electrical Engineering in Japan, 2009
AbstractLinear actuators are used in various industrial applications. Conventional linear actuators are a combination of a rotational motor and a ball screw, a hydraulic actuator, or a linear motor. However, these actuators have some demerits. This paper proposes a spiral motor (SPRM) that comprises a helical stator and a helical mover.
Kominami, Tsutomu, Fujimoto, Yasutaka
openaire   +2 more sources

Analytical sun synchronous low-thrust manoeuvres

, 2012
Article describes analytical sun synchronous low-thrust ...
Stephanie Y. Docherty, Macdonald, Malcolm, Malcolm Macdonald, Docherty, Stephanie, Docherty, Stephanie Y.; id_orcid   +4 more
core   +1 more source

Efficient Polarization-Diversity Grating Coupler With Multipolar Radiation Mode Enhancement

IEEE Photonics Journal
Two-dimensional (2D) diffraction gratings offer a polarization-independent coupling solution between the planar photonic chips and optical fibers, with advantages including placement flexibility, ease of fabrication, and tolerance to alignment errors. In
Wu Zhou, Kaihang Lu, Shijie Kang, Xiaoxiao Wu, Yeyu Tong   +4 more
doaj   +1 more source

Scalable and Sustainable Dry Microfabrication Enabled by High-Precision and Wafer-Scale Transfer Lithography of Commercial Photoresists

Nano-Micro Letters
Highlights Universal, high-precision and wafer-scale (~ 4-inch) transfer lithography of multiple commercial photoresists for patterning various lithography-incompatible substrates.
Qinhua Guo, Zhiqing Xu, Lizhou Yang, Jingyang Zhang, Yawen Gan, Jiajun Zhang, Jiahao Jiang, Yunda Wang   +7 more
doaj   +1 more source

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source

Оptimization of gas turbine aircraft engine control throughout the engine service life

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018
The task of optimizing control methods in order to maintain key performance parameters of a gas turbine engine throughout the engine service life is considered.
O. S. Gurevich, F. D. Golberg, S. A. Smetanin, M. E. Trifonov   +3 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Thrust sheet evolution in the Kinlochewe region of the Moine Thrust Zone, N.W. Scotland and the Pelvoux-Brianconnais, French Alps [PDF]

, 1984
Balanced and restored cross sections demonstrate a minimum 16 km shortening below the Moine Thrust and minimum restored wi1ths of 17 km between the La Meije and Combeynot Thrusts (external Alps), and 54 km between the frontal Subbrianconnais Thrust ...
Matthews, Stephen John, Matthews, S.J
core  

Multi-Tier UAV Edge Computing Toward Long-Term Energy Stability for Low Altitude Networks

IEEE Open Journal of the Communications Society
The agile mobility of Uncrewed Aerial Vehicles (UAVs) makes them ideal for low-altitude edge computing. This paper proposes a novel multi-tier UAV edge computing system where lightweight Low-Tier UAVs (L-UAVs) function as edge servers for vehicle users ...
Yufei Ye, Shijian Gao, Xinhu Zheng, Liuqing Yang   +3 more
doaj   +1 more source

Propulsion systems and low-thrust rocket engines based on various physical principles for control systems of small and micro-spacecraft

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018
The article presents an analysis of the possibility of using propulsion systems and rocket thrusters based on various physical principles and used as part of small and very small spacecraft.
V. V. Ryzhkov, A. V. Sulinov
doaj   +1 more source