نتایج جستجو برای: partial digest problem
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Desmosine-enriched peptides were isolated from a thermolysin digest of bovine ligamentum nuchae elastin and a partial sequence was determined. A 'two-cross-link' model is proposed in which a second cross-link, perhaps lysinonorleucine, joins two peptide chains approx. 35 amino acid residues removed from the desmosine. Implied in this model is a certain asymmetry or directionality which places r...
Hash functions are tools used in integrity of messages, digital signatures and digital time stamping. Message digest algorithms started with public key cryptography for authentication. Digest algorithms compute some hash functions, which are message digest values based on a simple set of primitive operations of 32-bit words. Among the digest algorithms MD4 and MD5 are most popular. Both these a...
Enhancing the thermal destruction of Escherichia coli O157:H7 in ground beef patties using trans-cinnamaldehyde Trans-cinnamaldehyde (TC) is an active antimicrobial substance extracted from the spice cinnamon which offers meat processors a labelfriendly, non-artificial sanitising agent. The effectiveness of TC in the inactivation of the foodborne pathogen Escherichia coli 0157:H7 in undercooked...
Survival of E. coli O157:H7 on beef treated with 2% or 5% lactic acid The aim of this American study was to investigate the effects of lactic acid sprays on acid-tolerant E. coli O157:H7 and E. coli on beef surfaces, slices of beef with cut muscle, fat and membrane surfaces. The surfaces were inoculated with a five strain cocktail of acid-adapted E. coli O157:H7, or with a non-acid-adapted stra...
In 1992, Zheng, Pieprzyk and Seberry proposed a one-way hashing algorithm called HAVAL, which compresses a message of arbitrary length into a digest of 128, 160, 192, 224 or 256 bits. It operates in so called passes where each pass contains 32 steps. The number of passes can be chosen equal to 3, 4 or 5. In this paper, we devise a new differential path of 3-pass HAVAL with probability 2−114, wh...
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