Results 1 to 10 of about 21,488 (230)

Geology and paleontology of the Upper Cretaceous Kem Kem Group of eastern Morocco [PDF]

ZooKeys, 2020
The geological and paleoenvironmental setting and the vertebrate taxonomy of the fossiliferous, Cenomanian-age deltaic sediments in eastern Morocco, generally referred to as the “Kem Kem beds”, are reviewed.
Nizar Ibrahim, Paul C. Sereno, David J. Varricchio, David M. Martill, Didier B. Dutheil, David M. Unwin, Lahssen Baidder, Hans C. E. Larsson, Samir Zouhri, Abdelhadi Kaoukaya   +9 more
doaj   +7 more sources

An Efficient Post-Quantum KEM From CSIDH

Journal of Mathematical Cryptology, 2022
The SIDH and CSIDH are now the two most well-known post-quantum key exchange protocols from the supersingular isogeny-based cryptography, which have attracted much attention in recent years and served as the building blocks of other supersingular isogeny-
Mingping Qi
exaly   +2 more sources

A Novel PQC-Based Image Encryption Scheme Using Seismic Wave Permutation [PDF]

Entropy
Image encryption schemes based on chaotic maps offer strong statistical properties but are vulnerable to quantum attacks, and their integration with post-quantum cryptography has not been sufficiently explored.
Cemile İnce
doaj   +2 more sources

A Second Peirosaurid Crocodyliform From the Mid-Cretaceous Kem Kem Group of Morocco and the Diversity of Gondwanan Notosuchians Outside South America

Royal Society Open Science, 2021
Notosuchians are an extinct clade of terrestrial crocodyliforms with a particularly rich record in the late Early to Late Cretaceous (approx. 130–66 Ma) of Gondwana.
Driss Ouarhache, Philip D. Mannion, Cecily S C Nicholl   +2 more
exaly   +3 more sources

Keratoelastoidosis marginalis as a marker of cumulative actinic damage: A scientific letter [PDF]

South African Family Practice
Background: Keratoelastoidosis marginalis (KEM) is a rare, acquired marginal keratoderma typically affecting older individuals with long-term sun exposure and manual labour. Although regarded as benign, its broader clinical relevance is often overlooked.
Kirstin Becker, Vanessa Kriek, Kevin McCree, Willem I. Visser   +3 more
doaj   +2 more sources

Indistinguishability under adaptive chosen-ciphertext attack secure double-NTRU-based key encapsulation mechanism [PDF]

PeerJ Computer Science, 2023
In this article, we propose a double-NTRU (D-NTRU)-based key encapsulation mechanism (KEM) for the key agreement requirement of the post-quantum world. The proposed KEM is obtained by combining one-way D-NTRU encryption and Dent’s KEM design method.
Kübra Seyhan, Sedat Akleylek
doaj   +2 more sources

Экспедиции Русского музея в Беломорскую Карелию (1958–2021)

Искусство Евразии, 2022
Статья посвящена более чем шестидесятилетней истории изучения Беломорской Карелии сотрудниками Русского музея. Приводятся основные этапы экспедиционных исследований начиная с 1950-х годов.
Антропова, И.А.
doaj   +1 more source

The effect of kaempferol on the dentin bonding stability through matrix metalloproteinases inhibition and collagen crosslink in dentin biomodification

Journal of Dental Sciences, 2023
Background/purpose: Naturally derived collagen crosslinkers with matrix metalloproteinases (MMPs) inhibitory activity for dentin bonding have been previously studied. One of these crosslinkers is flavonoids.
Jeonghwa Cho, Hyeryeong Kim, Kyung-Hyeon Yoo, Youna Paik, In-Ryoung Kim, Seog-Young Yoon, Yong-Il Kim   +6 more
doaj   +1 more source

A code-based hybrid signcryption scheme

Journal of Mathematical Cryptology, 2023
A key encapsulation mechanism (KEM{\mathsf{KEM}}) that takes as input an arbitrary string, i.e., a tag, is known as tag-KEM{\mathsf{KEM}}, while a scheme that combines signature and encryption is called signcryption.
Klamti Jean Belo, Hasan M. Anwarul
doaj   +1 more source

New mid-cervical vertebral morphotype of Spinosauridae from the Kem Kem Group of Morocco

Vertebrate Anatomy, Morphology, Palaeontology, 2021
An unusual mid-cervical vertebra belonging to a large spinosaurid from the Cenomanian Kem Kem Group of Morocco is described. It is compared to the characteristic morphology of each reconstructed cervical position in Spinosaurus aegyptiacus, based on a ...
Bradley McFeeters
doaj   +1 more source