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Articles from Springer a leading global scientific publisher of scientific books and journals. - dna forensic @ Fri, 18 May 2018 at 07:33 AM
Forensic Science - Encyclopedia of Law and Economics @ 2021-01-01
Forensic science applies natural, physical, and social sciences to resolve legal matters. The term forensics has been attached to many different fields: economics, anthropology, dentistry, pathology, toxicology, entomology, psychology, accounting, engineering, and computer forensics. Forensic evidence is gathered, examined, evaluated, interpreted, and presented to make sense of an event and provide investigatory leads. Various classification schemes exist for forensic evidence, with some forms of evidence falling under more than one scheme. Rules of evidence differ between jurisdictions, even between countries that share similar legal traditions. This makes the sharing of evidence between countries particularly problematic, at times rendering this evidence inadmissible in national courts. Several measures have been proposed and organizations created to strengthen forensic science and promote best practices for practitioners, researchers, and academicians in the field.
Genetics and Tropical Forests - Tropical Forestry Handbook @ 2021-01-01
Genetics and Tropical Forests - Tropical Forestry Handbook @ 2021-01-01
Fluorescence Lifetime Imaging - Handbook of Photonics for Biomedical Engineering @ 2021-01-01
Fluorescence lifetime imaging (FLIM) is a key fluorescence microscopy technique to map the environment and interaction of fluorescent probes. It can report on photophysical events that are difficult or impossible to observe by fluorescence intensity imaging, because FLIM is largely independent of the local fluorophore concentration and excitation intensity. Many FLIM applications relevant for biology concern the identification of Förster resonance energy transfer (FRET) to study protein interactions and conformational changes. In addition, FLIM has been used to image viscosity, temperature, pH, refractive index, and ion and oxygen concentrations, all at the cellular level. The basic principles and recent advances in the application of FLIM, FLIM instrumentation, molecular probe, and FLIM detector development will be discussed.
Robust and Lightweight Image Encryption Approach Using Public Key Cryptosystem - Cybernetics and Algorithms in Intelligent Systems @ 2019-01-01
With significant progress in cryptographic protocols, it has been seen that not all efficient protocols were investigated for encrypting image. At present, we find that existing approaches for image encryption still lacks robustness with respect to forward as well as backward secrecy. Harnessing the potential feature of public key cryptosystem, the proposed system utilizes elliptical curve cryptography for cost effective computation of secret keys required for performing encryption. The security strength is further leveraged by using nucleotide sequencing rules in order to perform scrambling operation of the encrypted image and thereby offering dual layer of security. The study outcome shows that proposed system offers better retention of signal quality as well as lower level of correlation in order to prove better imperceptible features in contrast to existing approaches.
An image encryption approach using particle swarm optimization and chaotic map - International Journal of Information Technology @ 2018-09-01
Encryption is predominantly crucial in order to provide safeguard to sensitive data, specifically images, against any possible illegitimate access and transgressions. This paper presents to propose an optimized image encryption approach for secure image-based communication. The approach makes use of particle swarm optimization to receive optimized encryption effect and a chaotic map. Initially, the approach generates several encrypted images and chaotic Logistic map, where session key for map’s initial conditions are made dependent on pending plain-image. Subsequently, the encrypted images are served as particles and an initial assemblage to operate optimization through PSO. The optimized encrypted image is manifested by correlation coefficient relevant to contiguous pixels as fitness function. The simulation results of proposed encryption approach demonstrate that encrypted image exhibits high de-correlation of adjacent pixels along with other excellent encryption lineaments such as flat histograms, entropies, net pixel change rates, and unified average changing intensities.
The precise estimation of postmortem interval (PMI) is a critical step in death investigation of forensic cases. Detecting the degradation of RNA in tissues by real time quantitative polymerase chain reaction (RT-qPCR) technology provides a new theoretical basis for estimation of PMI. However, most commonly used reference genes degrade over time, while previous studies seldom consider this when selecting suitable reference genes for the estimation of PMI. Studies have shown microRNAs (miRNAs) are very stable and circular RNAs (circRNAs) have recently emerged as a novel class of RNAs with high stability. We aimed to evaluate the stability of the two kinds of RNAs and normal reference genes using geNorm and NormFinder algorithms to identify tissue-specific reference genes for PMI estimation. The content of candidate RNAs from mouse heart, liver and skeletal muscle tissues were dynamically examined in 8 consecutive days after death. Among the 11 candidate genes (?-actin, Gapdh, Rps18, 5S, 18S, U6, miR-133a, miR-122, circ-AFF1, LC-Ogdh and LC-LRP6), the following genes showed prioritized stability: miR-122, miR-133a and 18S in heart tissues; LC-Ogdh, circ-AFF1 and miR-122 in liver tissues; and miR-133a, circ-AFF1 and LC-LRP6 in skeletal muscle tissues. Our results suggested that miRNAs and circRNAs were more stable as reference genes than other kinds of RNAs regarding PMI estimation. The appropriate internal control genes were not completely the same across tissue types.
Found 11 Articles for dna forensic