Results 121 to 130 of about 10,061 (256)

Fast, efficient piston correction of deployable space telescopes using machine learning [PDF]

Alignment of segmented telescopes is essential in creating an effective monolithic primary mirror. A fast, two-step piston sensing technique has been developed to enable diffraction-limited imaging.
Bourgenot, Cyril, Martin, Daniel, Reeves, Andrew, P. H. Shum, Hubert   +3 more
core   +1 more source

Assessing Eco‐Efficiency and the Cost of Carbon Abatement in Wastewater Treatment: Evidence From Spain

Sustainable Development, EarlyView.
ABSTRACT Wastewater treatment plants (WWTPs) play a critical role in protecting public health and the environment but are also contributors to carbon emissions. Improving the eco‐efficiency of WWTPs is essential for advancing sustainability in the sector.
Alexandros Maziotis, Maria Molinos‐Senante   +1 more
wiley   +1 more source

Sensitivity of starting force, piston mass, and load pressure in nonlinear electro–hydro–mechanical hybrid power systems

Next Energy
Global energy conversion systems increasingly rely on highly integrated thermo–electro–mechanical processes, in which nonlinear vibration strongly affects efficiency, stability, and power density.
Qinglong Wu, Yepei Zhang, Bowen Su, Yaodong Wang, Chenheng Yuan   +4 more
doaj   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

Strategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani, Mariano Mastrogiorgio, Giuseppe Carignani   +2 more
wiley   +1 more source

Wavefront error sensing [PDF]

, 1986
A two-step approach to wavefront sensing for the Large Deployable Reflector (LDR) was examined as part of an effort to define wavefront-sensing requirements and to determine particular areas for more detailed study.
Tubbs, Eldred F.
core   +1 more source

In situ mapping of iron oxidation in laminar metal fuel flames using X‐ray absorption spectroscopy

Journal of Synchrotron Radiation, EarlyView.
For the first time an iron metal flame has been mapped by in situ X‐ray absorption spectroscopy. Strong gradients in oxidation state and phase composition across the metallic core and the flame front were found with FeO peaking at the visible flame front and Fe3O4 forming further beyond.Metal fuels such as iron are promising carbon‐free energy carriers
Lukas Braun, Fabian P. Hagen, Michal Fedoryk, Malte Seitz, Björn Stelzner, Dimosthenis Trimis, Jan-Dierk Grunwaldt, Dmitry E. Doronkin   +7 more
wiley   +1 more source

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Acoustic modelling of surface sources. Part I. Piston model, discretizing error, axisymmetrical problem

Archives of Acoustics, 2014
The paper discusses the application of irregular boundary elements in BEM method. These elements were proposed in order to reduce the number of the elements in acoustical model of surface source.
A. BRAŃSKI
doaj  

Enhancing piston-type fertilizer injection pump performance through check valve optimization

Agricultural Water Management
Piston-type injection pumps are critical components for fertilizer delivery in drip fertigation systems. The volumetric efficiency and metering accuracy of the pump, key determinants of fertilization uniformity, depend mainly on the structural parameters
Shaoxuan Kang, Jun Ouyang, Yaojun Li, Haijun Yan   +3 more
doaj   +1 more source

Extracellular fluid viscosity influences the mechanics and migration of MDA‐MB‐231 cells in a macromolecule‐dependent manner

The FEBS Journal, EarlyView.
Macromolecule‐dependent increases in extracellular fluid viscosity alter cell phenotype. These distinct macromolecules create different extracellular environments that modulate cell morphology and mechanoprotein expression, migration and invasion capacity, and cellular mechanical properties.
Ian M. Smith, Nikka Givpoor, Chenchen Handler, Ariel Abraham, Shohini Banerjee, Giuliano Scarcelli, Kimberly M. Stroka   +6 more
wiley   +1 more source