Results 91 to 100 of about 410,560 (293)
Advanced Functional Materials, EarlyView.Bloodstream infections (BSI) are one of the leading causes of mortality and morbidity in both civilian and military populations. This paper summarizes recent progress in novel treatment strategies to manage BSI arising from both bacterial and fungal pathogens using molecules, particles, and materials to elicit host‐directed immunity.
Thomas Thomou +11 more
wiley +1 more source
Behavior of axial thrust caused by intake sump vortices in a vertical mixed flow pump
Nihon Kikai Gakkai ronbunshu, 2017 Axial thrust forces acting on an impeller of a diffuser type mixed flow pump and the behavior of the axial thrust generated by the vortex occurrence in a pump intake sump were studied.
Yuji KANEMORI, Yasuo HANDA
doaj +1 more source
Instability of Fixed, Low-Thrust Drag Compensation [PDF]
Journal of Guidance, Control, and Dynamics, 2003 FORCED drag compensation using continuous low-thrustpropulsion has been considered for satellites in low Earth orbit. This simple, but nonoptimal, scheme merely requires that the thrust vector is directed opposite to the drag vector and that the magnitude of the two are equal.
openaire +2 more sources
Low-thrust guidance study Final report [PDF]
Computer algorithm to determine minimum-time optimal control for continuous low-thrust propulsion systems operating in inverse-square gravity ...
Fimple, W. R., Van Dine, C. P.
core +1 more source
A Homotopy-Based Method for Optimization of Hybrid High-Low Thrust Trajectories [PDF]
, 2014 Space missions require increasingly more efficient trajectories to provide payload transport and mission goals by means of lowest fuel consumption, a strategic mission design key-point.
Ceriotti, Matteo, Sullo, Nicola
core
Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production
Advanced Functional Materials, EarlyView.Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons +11 more
wiley +1 more source
The topics presented are covered in viewgraph form. The objective is to provide technologies for a broad range of future space systems, such as: planetary and earth-orbital spacecrafts; space station and tended large space systems; and earth-to-orbit and
Byers, D.
core +1 more source
Extension of Martian orbits using continuous low-thrust propulsion [PDF]
, 2012 There has recently been significant interest in exploration of the Martian surface and atmosphere with a view to future human exploration. Thus missions must be developed which are responsive to these scientific goals.
Anderson, Pamela +2 more
core
MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance
Advanced Functional Materials, EarlyView.Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley +1 more source
A users manual for a computer program which calculates time optical geocentric transfers using solar or nuclear electric and high thrust propulsion [PDF]
This manual is a guide for using a computer program which calculates time optimal trajectories for high-and low-thrust geocentric transfers. Either SEP or NEP may be assumed and a one or two impulse, fixed total delta V, initial high thrust phase may be ...
Edelbaum, T. N. +2 more
core +1 more source