Results 31 to 40 of about 7,730,450 (309)

Breaking the Surface: Buoyant Metal–Polymer Open–Cell Hybrid Lattice Metamaterials

open access: yesAdvanced Materials, EarlyView.
Open‐cell metal–polymer lattice metamaterials that defy sinking. (a) Injection process of the polyurethane (PU) foam into the titanium (Ti‐6Al‐4V) hollow‐strut lattice creating the open‐cell Ti‐6Al‐4V+PU hybrid lattice, (b) flotation test of a hybrid lattice specimen, and (c) a digital representation and experimental validation of a marine buoy ...
Jordan Noronha   +7 more
wiley   +1 more source

Tamper‐Responsive Physical Unclonable Functions via Graphene‐Interlayered Block Copolymer Random Structures

open access: yesAdvanced Materials, EarlyView.
Self‐invalidating multilayer physical unclonable functions (PUFs) integrate fingerprint‐like metal nanopattern bilayers from block copolymer templates with highly reactive reduced graphene oxide (rGO) interlayers. This tamper‐responsive architecture blocks all unauthorized physical and chemical replication attempts while autonomously deactivating ...
Gyu Hui Jo   +7 more
wiley   +1 more source

Research on the Damage Characteristics of Ti-6Al-4V Simulation Blades Subjected to Foreign Object Damage

open access: yesShock and Vibration
In order to study the influence of different factors on the foreign object damage (FOD) of titanium alloy blades, a Ti-6Al-4V simulation blade was taken as the research object, and FOD tests were carried out under different working conditions by using an
Zhongsheng Li   +3 more
doaj   +1 more source

Formation of military position in the valuable system of cadets

open access: yesВестник Самарского государственного технического университета. Серия: Психолого-педагогические науки, 2019
The article presents a brief theoretical review of existing scientific papers that address the problems of social and professional identity, value orientations, as well as studying the relationship of these psychological concepts in the context of the ...
Maksim V. Sysolyatin
doaj   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

open access: yesAdvanced Materials Interfaces, EarlyView.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood   +7 more
wiley   +1 more source

EVOLUTION O FNATO STRATEGIES FOR THE EURO-ATLANTIC SECUROTY AS POTENTIONAL THREAT FOR THE NATIONAL SECURITY OF THE RUSSIAN FEDERATION

open access: yesRussian Journal of Economics and Law, 2007
The article deals with NATO structure and history of formation. The author also analyzes the acute problems of the strategy evolution, the NATO role and status, including the negative issues of the process.
M. V. Andreyev
doaj  

Modeling and vulnerability analysis of military communication network based on complex network

open access: yesXibei Gongye Daxue Xuebao
Aiming at the complexity of military communication system and the characteristics of network structure, based on the complex network theory, the relay communication entity (node) is introduced, and the communication relationship between equipment ...
GUO Haoming   +3 more
doaj   +1 more source

MILITARY EDUCATION: A REFLECTION OF THE MODERN MAINSTREAM

open access: yesНеперервна професійна освіта: теорія та практика, 2022
This article examines current problems of transformation of the system of military education, which require reflexion of basic and new conceptual constructs.
Оlena Uvarkina
doaj   +1 more source

Advanced MXene‐Based Multifunctional Nanoarchitecture Materials Engineered for Adsorptive Cleanup of Hazardous Radioactive Pollutants: A Comprehensive Critical Review

open access: yesAdvanced Materials Interfaces, EarlyView.
This work critically reviews MXenes as highly effective multifunctional nanomaterials for the adsorption of radio‐contaminants, demonstrating a remarkable adsorption capacity of up to 1376.75 mg/g and cyclic stability of 2–8 cycles, with complexation, electrostatic interactions, and the numerical strength of MXene active sites playing a key operational
Stephen Sunday Emmanuel   +1 more
wiley   +1 more source

Complicated course of measles among militaries

open access: yesAktualʹnaâ Infektologiâ, 2020
Background. Currently, measles remains a common disease worldwide and one of the most frequent causes of death among infectious diseases controlled by vaccine prophylaxis agents. The disease develops with different complications, varieties and percentage
V.I. Trykhlib   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy