Results 21 to 30 of about 29,768,854 (286)

Biomimetic ion substituted and Co-substituted hydroxyapatite nanoparticle synthesis using Serratia Marcescens

open access: yesScientific Reports, 2023
Biomimicry is becoming deep-rooted as part of bioceramics owing to its numerous functional advantages. Naturally occurring hydroxyapatite (HA) apart from primary nano structures are also characterised by various ionic substitutions.
Mareeswari Paramasivan   +4 more
doaj   +1 more source

New hash function based on C-MD structure and chaotic neural network

open access: yes网络与信息安全学报, 2023
In recent years, widely used hash algorithms such as MD5 and SHA-1 have been found to have varying degrees of security risks.The iterative structure of the SHA-2 algorithm is similar to that of SHA-1, making it vulnerable to attacks as well.Meanwhile ...
Liquan CHEN   +4 more
doaj   +3 more sources

Kode Autentikasi Hash pada Pesan Teks Berbasis Android

open access: yesJurnal Eksplora Informatika, 2018
Autentikasi merupakan hal yang sangat penting dalam pengiriman informasi baik berbentuk data ataupun pesan teks. Hal ini dikarenakan dibutuhkan autentikasi terhadap keaslian dan keutuhan data pada saat pertukaran informasi.
Yusfrizal Bin Pairin
doaj   +1 more source

Effects of Stephania hainanensis alkaloids on MSU-induced acute gouty arthritis in mice

open access: yesBMC Complementary Medicine and Therapies, 2021
Background Gout is initiated by the precipitation of monosodium urate (MSU) crystals within the joints and soft tissues, and it can eventually cause acute or chronic arthritis.
Hao-fei Fan   +8 more
doaj   +1 more source

Finding Collisions against 4-Round SHA-3-384 in Practical Time

open access: yesIACR Transactions on Symmetric Cryptology, 2022
The Keccak sponge function family, designed by Bertoni et al. in 2007, was selected by the U.S. National Institute of Standards and Technology (NIST) in 2012 as the next generation of Secure Hash Algorithm (SHA-3).
Senyang Huang   +3 more
doaj   +1 more source

Malicious Hashing: Eve’s Variant of SHA-1 [PDF]

open access: yes, 2014
We present collisions for a version of SHA-1 with modified constants, where the colliding payloads are valid binary files. Examples are given of colliding executables, archives, and images. Our malicious SHA-1 instances have round constants that differ from the original ones in only 40 bits (on average). Modified versions of cryptographic standards are
Ange Albertini   +4 more
openaire   +2 more sources

Reference intervals of serum hyaluronic acid corresponding to the radiographic severity of knee osteoarthritis in women

open access: yesBMC Musculoskeletal Disorders, 2013
Backgroud While serum levels of hyarulonic acid (sHA) is known to be useful for a burden of disease biomarker in knee OA, it is far from practical. The reference intervals must be established for biomarkers to be useful for clinical interpretation.
Kaneko Haruka   +14 more
doaj   +1 more source

Application of multicomponent seismic in tight reservoir prediction of the first member of Jurassic Shaximiao Formation, Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience
As the most powerful tool for tight gas prediction and exploration in the second member of the Shaximiao Formation (Sha 2 Member) in the Sichuan Basin, the technique of bright spot fails to deliver satisfactory results in the Sha 1 Member. To address the
Ming Zhang   +4 more
doaj   +1 more source

Action mechanism of coarse particle sulfate soil subgrade modified by volcanic ash

open access: yesYantu gongcheng xuebao, 2019
For the gravelly sand type sulfate soil with sodium sulfate content of 2%, the compaction tests, salt expansion tests, collapsibility tests and unconfined compressive strength tests with different ratios of lime, lime + volcanic ash are carried out ...
ZHANG Sha-sha 1, XIE Shan-jie 2, 1, YANG Xiao-hua 1, CHEN Wei-zhi 3
doaj   +1 more source

Exploiting an HMAC-SHA-1 Optimization to Speed up PBKDF2 [PDF]

open access: yesIEEE Transactions on Dependable and Secure Computing, 2020
PBKDF2 [1] is a well-known password-based key derivation function. In order to slow attackers down, PBKDF2 introduces CPU-intensive operations based on an iterated pseudorandom function (in our case HMAC-SHA-1). If we are able to speed up a SHA-1 or an HMAC implementation, we are able to speed up PBKDF2-HMAC-SHA-1.
Andrea Visconti, Federico Gorla
openaire   +3 more sources

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