Results 21 to 30 of about 22,532,109 (241)

Clean subglacial access: prospects for future deep hot-water drilling [PDF]

, 2015
Accessing and sampling subglacial environments deep beneath the Antarctic Ice Sheet presents several challenges to existing drilling technologies. With over half of the ice sheet believed to be resting on a wet bed, drilling down to this environment must
Smith, Andrew, Tranter, Martyn, Smith, Andrew M, Mowlem, M., Ross, N., Hodgson, Dominic A., Ross, N, Parnell, J, Rose, Mike, Mowlem, Matt, Bentley, Michael J., Siegert, MJ, Parnell, John, Mowlem, Matthew, Pearce, D., Hodgson, D.A., Siegert, M.J., Siegert, Martin J., Bentley, M.J., Tranter, M., Tranter, M, Rose, M, Smith, A.M., Ross, Neil, Smith, Andrew M., Makinson, K, Hodgson, DA, Makinson, Keith, Bentley, Michael, Hodgson, Dominic, Mowlem, M, Rose, M., Pearce, David, Pearce, D, Makinson, K., Siegert, Martin, Smith, AM, Parnell, J., Bentley, MJ   +38 more
core   +1 more source

Icing Wind Tunnel Test Campaign on a Nacelle Lip-Skin to Assess the Effect of a Superhydrophobic Coating on Ice Accretion

Applied Sciences, 2023
The formation of ice on nacelle causes the reduction or loss of aerodynamic performance, fuel consumption increases, reduced thrust, and the ingestion of ice, which can damage the engine.
Filomena Piscitelli, Salvatore Palazzo, Felice De Nicola   +2 more
doaj   +1 more source

Experimental Study on Adhesive Characteristics of Aircraft Dynamic Icing

Energies, 2023
The adhesive properties of aircraft icing play an important role in guiding the design of protection systems, while the formation environment, freezing process, and measurement methods have a great impact on the mechanical characteristics of ice, leading
Liang Ding, Xingshi Gu, Xian Yi, Shinan Chang   +3 more
doaj   +1 more source

Characterization in Relevant Icing Conditions of Two Superhydrophobic Coatings

Applied Sciences, 2022
The formation of ice can be very detrimental to flight safety, since the ice accumulated on the surfaces of the aircraft can alter both the aerodynamics and the weight, leading in some cases to catastrophic stall situations.
Filomena Piscitelli
doaj   +1 more source

Digital Twin-Driven Design of an Ice Prediction Model

Aerospace
This paper describes the development of an ice creation model to be used within the framework of a model-based systems engineering approach to predict the amount of ice growing on aircraft wings during flight.
Andrea Serino, Alberto Dagna, Eugenio Brusa, Cristiana Delprete   +3 more
doaj   +1 more source

Short-term variability in Greenland Ice Sheet motion forced by time-varying meltwater inputs: implications for the relationship between subglacial drainage system behavior and ice velocity. [PDF]

, 2012
High resolution measurements of ice motion along a 120 km transect in a land-terminating section of the GrIS reveal short-term velocity variations (<1 day), which are forced by rapid variations in meltwater input to the subglacial drainage system from
Cowton, Thomas, Bartholomew, Ian, Nienow, Peter, Sole, A., Mair, Douglas, Mair, D., Sole, Andrew, King, Matt A., Cowton, T., Bartholomew, I., King, M.A., Nienow, P., Cowton, Thomas; id_orcid   +12 more
core   +1 more source

Wind Tunnel Tests on a Piezo-Based Ice Protection System

Actuators
The requirements of the upcoming aircraft generation based on hybrid or electric propulsion discourage the use of Ice Protection Systems (IPSs) based on hot-air spilled from engine or demanding a large consumption of electrical power.
Luigi Mangiacrapa, Thorsten Klaas, Lorenzo Pellone, Filomena Piscitelli, Nadine Rehfeld, Giuseppe Mingione, Francesco Amoroso, Antonio Concilio, Salvatore Ameduri   +8 more
doaj   +1 more source

Study of the Technologies for Freeze Protection of Cooling Towers in the Solar System

Energies, 2022
A cooling tower is an important guarantee for the proper operation of a solar system. To ensure proper operation of the system and to maintain high-efficiency points, the cooling tower must operate year-round.
Jingnan Liu, Lixin Zhang, Yongbao Chen, Zheng Yin, Yan Shen, Yuedong Sun   +5 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Reliability improvement of power distribution line exposed to extreme icing in Poland [PDF]

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2020
Currently, overhead lines dominate in the Polish medium and low voltage distribution networks. Maintaining their high reliability constitutes a very important challenge, especially under the severely changing climate conditions.
W. Ciesielka, A. Gołaś, K. Szopa, W. Bąchorek, M. Benesz, A. Kot, S. Moskwa, P. Zydroń   +7 more
doaj   +1 more source