Results 41 to 50 of about 6,402,619 (361)

OLIA: An open-source digital lock-in amplifier

open access: yesFrontiers in Sensors, 2023
The Open Lock-In Amplifier (OLIA) is a microcontroller-based digital lock-in amplifier built from a small number of inexpensive and easily sourced electronic components.
Andrew J. Harvie   +2 more
doaj   +1 more source

Design, Detection and Management of Mechanical Security Code Manhole Cover

open access: yesMATEC Web of Conferences, 2018
In this paper, the researches and the application of manhole over as well as the existing problems have been described. The mechanical security code manhole cover with the built-in locking mechanism has been designed.
Su Zhonghua   +4 more
doaj   +1 more source

Non-destructive lock-picking of a historical treasure chest by means of X-ray computed tomography.

open access: yesPLoS ONE, 2020
An innovative approach to a non-destructive lock mechanism examination by means of X-ray computed tomography (CT) was involved in a careful opening of a locked 19th century chest missing the key, as an interdisciplinary cooperation with the restorers. In
Eva Zikmundová   +3 more
doaj   +1 more source

Quantum-locked key distribution at nearly the classical capacity rate [PDF]

open access: yes, 2014
Quantum data locking is a protocol that allows for a small secret key to (un)lock an exponentially larger amount of information, hence yielding the strongest violation of the classical one-time pad encryption in the quantum setting.
Lloyd, Seth, Lupo, Cosmo
core   +2 more sources

Sterically stabilized lock and key colloids: A self-consistent field theory study

open access: yes, 2011
A self-consistent field theory study of lock and key type interactions between sterically stabilized colloids in polymer solution is performed. Both the key particle and the lock cavity are assumed to have cylindrical shape, and their surfaces are ...
Fleer G. J., S. A. Egorov
core   +1 more source

Heterogeneous and rate-dependent streptavidin-biotin unbinding revealed by high-speed force spectroscopy and atomistic simulations [PDF]

open access: yes, 2019
Receptor-ligand interactions are essential for biological function and their binding strength is commonly explained in terms of static lock-and-key models based on molecular complementarity.
Gonzalez, Laura   +4 more
core   +3 more sources

General Design Layout of Datengxia Ship Lock

open access: yesRenmin Zhujiang, 2022
The Datengxia hydro project is a key project to open the 100-million-ton golden waterway of the Xijiang River,with high navigation requirements for the dam-site reach and a huge freight volume.The general design layout of the navigation structure ship ...
LI Yawen, CHEN Guihua
doaj  

Smart Molecular Recognition: From Key-to-Lock Principle to Memory-Based Selectivity

open access: yesFrontiers in Chemistry, 2020
The formation and decomposition of inclusion compounds with a solid-solid phase transition may be very selective to the guest molecular structure. This selectivity may function in essentially different ways than defined by the classical concept of ...
Askar K. Gatiatulin   +2 more
doaj   +1 more source

Multi-Photon Quantum Key Distribution Based on Double-Lock Encryption

open access: yes, 2015
This paper presents a multi-stage, multi-photon quantum key distribution protocol based on the double-lock cryptography. It exploits the asymmetry in the detection strategies between the legitimate users and the eavesdropper. The security analysis of the
Gottesman   +6 more
core   +1 more source

Um paradigma da química medicinal: a flexibilidade dos ligantes e receptores A medicinal chemistry paradigm: ligands and receptor flexibility

open access: yesQuímica Nova, 2005
In general, molecular modeling techniques applied in medicinal chemistry have been static and drug based. However the active site geometry and the intrinsic flexibility of both receptor and ligand are fundamental properties for molecular recognition and ...
Hugo Verli, Eliezer J. Barreiro
doaj   +1 more source

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