Results 61 to 70 of about 220,339 (337)

Quantum Seals [PDF]

open access: yesPhysica Scripta, 2005
A quantum seal is a way of encoding a message into quantum states, so that anybody may read the message with little error, while authorized verifiers can detect that the seal has been broken. We present a simple extension to the Bechmann-Pasquinucci majority-voting scheme that is impervious to coherent attacks, and further, encompasses sealing quantum ...
Sudhir Kumar Singh, R. Srikanth 0001
openaire   +3 more sources

When aerial surveys won’t do:Grey seal pup production in cryptic habitats of Wales [PDF]

open access: yes, 2014
Grey seals (Halichoerus grypus) are a species of conservation importance that require Marine Protected Area management and population status assessment under the EU Habitats and Species Directive. Aerial surveys are commonly used to monitor grey seal pup
Westcott, Stephen   +4 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Dynamic Performance Analysis of Gas Film Floating Ring Seals Based on the Reynolds–Bernoulli Small-Perturbation Model

open access: yesMachines
Gas film floating ring seals are extensively utilized in aircraft engines, and precise analysis of gas film performance is crucial for ensuring reliable seal design.
Shuhai Zhu   +3 more
doaj   +1 more source

Tamga-Shaped Symbols on Ceramics from the Sites of Otrar Oasis of the Pre-Arabic Period

open access: yesПоволжская археология, 2017
The article considers tamga-shaped symbols from excavations at Pshakshitobe, Besinshitobe and Kuyuk-Mardan settlements in Southern Kazakhstan. Tamga symbols on ceramics are represented by various types.
Baipakov Karl M. , Avizova Aiman K.
doaj   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

A remotely operated blood sampling and sedative administration device in freely moving pinnipeds

open access: yesMethods in Ecology and Evolution
A remotely operated device for use with freely moving pinnipeds was designed and successfully developed for the collection of blood samples and the administration of sedatives via an indwelling, venous catheter. The performance of the sampler, called the
Joanna L. Kershaw   +10 more
doaj   +1 more source

Mycenaean Seals and Sealings [PDF]

open access: yes, 2012
Abstract After the introduction of a sealing system from the Near East into southern Greece in the Early Helladic period and the destruction of that culture, there is no demonstrable sign that seals were used on the Greek mainland until the sudden appearance of seals in the Mycenae Shaft Graves at the end of the Middle Helladic period.
openaire   +1 more source

The Seal Calculus

open access: yesInformation and Computation, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Castagna, Giuseppe   +2 more
openaire   +3 more sources

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