Results 51 to 60 of about 635,480 (332)

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

Balkan Geostrategic Vector of the Russian Federation

open access: yesHistoria i Polityka, 2018
Russia’s policy concerning the Balkan countries is discussed in this article. It is substantiated that the countries of Southeastern Europe have long been one of the key places in Russian geostrategy.
Oleg Kondratenko
doaj   +1 more source

Energy conditions bounds and their confrontation with supernovae data

open access: yes, 2008
The energy conditions play an important role in the understanding of several properties of the Universe, including the current accelerating expansion phase and the possible existence of the so-called phantom fields.
M. J. Rebouças   +6 more
core   +1 more source

Child Witness Policy: Law Interfacing with Social Science [PDF]

open access: yes, 2002
The number of children testifying in court has posed serious practical and legal problems for the judicial system. One problem confronting the courts is how to protect children from experiencing the psychological trauma resulting from face-to-face ...
Graham, Louise   +3 more
core   +3 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Great Powers in Central and Eastern Europe: Dynamics and Prospects

open access: yesChina Quarterly of International Strategic Studies, 2022
The United States, EU members, and Russia share extensive and important interests in Central and Eastern Europe (CEE) in terms of geo-security, energy, and values.
Hongyi Wang
doaj   +1 more source

Identification of siderophore producing and cynogenic fluorescent Pseudomonas and a simple confrontation assay to identify potential bio-control agent for collar rot of chickpea

open access: yes3 Biotech, 2017
In soil, plant roots coexist with bacteria and fungi that produce siderophores capable of sequestering the available iron. Microbial cyanogenesis has been demonstrated in many species of fungi and in a few species of bacteria (e.g., Chromobacterium and ...
A. Kotasthane   +3 more
semanticscholar   +1 more source

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan   +6 more
wiley   +1 more source

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

open access: yesAdvanced Functional Materials, EarlyView.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras   +6 more
wiley   +1 more source

“RESET POLICY” AS THE NEW STAGE IN RUSSIA – THE USA RELATIONS

open access: yesВестник Кемеровского государственного университета, 2014
The paper focuses on the problems in the relations between Russia and the USA at the contemporary stage. The author highlights the reasons for the “reset policy” formation, its main activities, and the reasons that led to its termination.
O. V. Biryukova
doaj  

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