Results 41 to 50 of about 2,360,922 (264)

Numerical Study on the Influence of Water Depth on Air Layer Drag Reduction

open access: yesApplied Sciences
Over the years, air lubrication technology has been widely applied to maritime vessels, demonstrating its significant energy-saving and emission-reducing effects.
Qing Ye   +3 more
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

OPNAV Instruction 5450.210D, Naval Postgraduate School Mission and Functions [PDF]

open access: yes, 2012
OPNAVINST 5450.21D NPS, 30 Mar 2012, from the Chief of Naval Operations, "NPS Mission".To prescribe functions performed by the Naval Postgraduate School (NAVPGSCOL) in support of the mission and guidance assigned by references (a) through (e).
Naval Postgraduate School (U.S.)
core   +2 more sources

High accuracy station moving method for total station in submarine construction

open access: yesZhongguo Jianchuan Yanjiu, 2017
[Objectives] When we measure submarine pressure hulls using a total station, it is essential to set several stations in order to complete the measurement of the whole cabin due to the complicated measuring environment.
MIN Shaosong   +3 more
doaj   +1 more source

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

open access: yesAdvanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang   +11 more
wiley   +1 more source

Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization

open access: yesAdvanced Materials, EarlyView.
A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab   +8 more
wiley   +1 more source

Naval Warfare Studies Institute Newsletter, 2022-01-13 [PDF]

open access: yes, 2022
Unnumbered issueHappy New Year! In this issue, we walk you through the emerging technologies branch of the Naval Warfare Studies Institute at Naval Postgraduate School.

core   +2 more sources

Autonomous Folding of Soft Matter From Living Polymers

open access: yesAdvanced Materials, EarlyView.
Origami structures are endowed with “living” polymer creases that grow, remodel, and stiffen in response to nutrient solutions. This post‐fabrication growth enables autonomous folding, iterative regrowth, and mechanical tuning involving origami assemblies, such as cranes, Miura‐ori tessellations, rigid and non‐rigid square‐twist patterns, establishing ...
Jiahe Huang   +6 more
wiley   +1 more source

Shape-stabilized phase change material with highly thermal conductive matrix developed by one-step pyrolysis method

open access: yesScientific Reports, 2021
Metal microspheres doping porous carbon (MMPC), which was prepared using in-situ pyrolysis reduction strategy, could enhance the thermal conductivity of shape-stabilized phase change material (ss-PCM) prepared by MMPC as the matrix.
Shibin Wu   +5 more
doaj   +1 more source

Establishing Atomic Coherence in Twisted Oxide Membranes Containing Volatile Elements

open access: yesAdvanced Materials, EarlyView.
Twisted oxide membranes containing volatile elements often suffer from amorphous interfacial dead layers that suppress coupling. An oxygen‐annealing strategy establishes atomically coherent and chemically bonded interfaces in twisted NaNbO3 membranes, enabling coherent oxide moiré architectures in volatile‐element‐containing systems.
Young‐Hoon Kim   +6 more
wiley   +1 more source

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