Showing 20 articles starting at article 521
< Previous 20 articles Next 20 articles >
Categories: Biology: Developmental, Engineering: Biometric
Published Botany: Chloroplast from the father
(via sciencedaily.com) Under cold conditions, not only the mother plant but also the father plant can pass on its chloroplasts to the offspring.
Published Genome editing procedures optimized
(via sciencedaily.com) Scientists succeed in boosting the efficiency of CRISPR/Cas9 and related methods and modifying initially inaccessible DNA sequences. They fine-tuned these tools to enable effective genetic screening for modelling specific gene mutations.
Published New genetic disorder that causes susceptibility to opportunistic infections
(via sciencedaily.com) Immunogeneticists have discovered a new genetic disorder that causes immunodeficiency and profound susceptibility to opportunistic infections including a life-threatening fungal pneumonia.
Published DNA from domesticated chickens is tainting genomes of wild red junglefowl, study finds
(via sciencedaily.com) The red junglefowl -- the wild ancestor of the chicken -- is losing its genetic diversity by interbreeding with domesticated birds, according to a new study.
Published An Old Yellow Enzyme helps algae combat photooxidative stress
(via sciencedaily.com) Old Yellow Enzymes (OYEs) were discovered in the 1930s and have been the subject of much research ever since. This is because these biocatalysts -- coloured yellow by an auxiliary molecule -- are capable of performing reactions that are very valuable for the chemical industry, such as producing drug precursors or fragrances. Even though OYEs are found in many organisms, their natural role for these organisms has hardly been understood so far -- possibly because the research focus has been on their biotechnological application. Researchers have now shown that an OYE of the unicellular green alga Chlamydomonas reinhardtii is vital for this plant microorganism to protect itself from photooxidative stress.
Published New study decodes one of the living world's fastest cell movements
(via sciencedaily.com) Original source Heliozoan axopodia are important for their motility. However, the underlying mechanism of their axopodial contraction has remained ambiguous. Recently, researchers have reported that microtubules are simultaneously cleaved at multiple sites, allowing the radiating axopodia in a heliozoan, Raphidocystis contractilis, to disappear almost instantly. They have now identified the gene set and proteins involved in this microtubule disruption. This research can help develop a method to detect water pollution and evaluate the efficacy of new anticancer drugs.
Published Modified CRISPR-based enzymes improve the prospect of inserting entire genes into the genome to overcome diverse disease-causing mutations
(via sciencedaily.com) Original source Many genetic diseases are caused by diverse mutations spread across an entire gene, and designing genome editing approaches for each patient's mutation would be impractical and costly.
Published Automatic speaker recognition technology outperforms human listeners in the courtroom
(via sciencedaily.com) The forensic-voice-comparison system, based on state-of-the-art automatic-speaker-recognition technology, outperformed all the listeners.
Published New report offers blueprint for regulation of facial recognition technology
(via sciencedaily.com) A new report outlines a model law for facial recognition technology to protect against harmful use of this technology, but also foster innovation for public benefit.
Published How old is that fingerprint?
(via sciencedaily.com) Forensic dramas on TV make it seem easy to determine when fingerprints were left at the scene of a crime. In reality, the oils in fingerprints degrade over time, and it's difficult to figure out their age. Now, researchers have discovered molecular markers for changes to these oils over a seven-day time period -- information that could be used to estimate fingerprints' ages more accurately.
Published Optical imaging of dynamic interactions between molecules in a cell
(via sciencedaily.com) Researchers develop the 'photoswitching fingerprint analysis'. A unique technology that for the first time allows the analysis of molecular processes and the regulation of individual proteins in living cells with sub-10 nm spatial resolution. The application ranges from biological to medical research.
Published Sniffing out your identity with breath biometrics
(via sciencedaily.com) Researchers have developed an artificial 'nose' that can identify individuals from their breath. Built with a 16-channel sensor array that can detect different compounds found in a person's breath, the olfactory sensor system has the potential to become another option in the biometric security toolkit. Combined with machine learning, the 'artificial nose' was able to authenticate up to 20 individuals with an average accuracy of more than 97%.
Published Sensor imperfections are perfect for forensic camera analysis
(via sciencedaily.com) In a project aimed at developing intelligent tools to fight child exploitation, computer scientists have developed a system to analyze the noise produced by individual cameras. This information can be used to link a video or an image to a particular camera.
Published Radio waves for the detection of hardware tampering
(via sciencedaily.com) Up to now, protecting hardware against manipulation has been a laborious business: expensive, and only possible on a small scale. And yet, two simple antennas might do the trick.
Published Bluetooth signals can be used to identify and track smartphones
(via sciencedaily.com) A team of engineers has demonstrated for the first time that the Bluetooth signals emitted constantly by our mobile phones have a unique fingerprint that can be used to track individuals' movements.
Published Forensic scientists improve touch DNA collection methods
(via sciencedaily.com) Skin cells and their DNA varies between individuals, but new data shows that some groups of people have higher variability in their cell deposits. The South Australian forensic science researchers are building a suite of new insights into crime scene investigation -- including the difference between high, intermediate and low skin 'shedders' that will help understanding of trace or 'touch DNA'.
Published Turning any camera into a polarization camera
(via sciencedaily.com) Researchers have developed a metasurface attachment that can turn just about any camera or imaging system, even off-the-shelf systems, into polarization cameras. The attachment uses a metasurface of subwavelength nanopillars to direct light based on its polarization and compiles an image that captures polarization at every pixel.
Published Real-world study shows the potential of gait authentication to enhance smartphone security
(via sciencedaily.com) A study showed that -- within an appropriate framework -- gait recognition could be a viable technique for protecting individuals and their data from potential crime.
Published Bulletproof fingerprint technology takes images in the round
(via sciencedaily.com) Experts have developed a unique method for retrieving high resolution images of fingermarks from curved objects like bullet casings that offers greater detail and accuracy than traditional forensic methods.
Published Securing data transfers with relativity
(via sciencedaily.com) To counter hacking, researchers have developed a new system based on the concept of 'zero-knowledge proofs', the security of which is based on the physical principle of relativity: information cannot travel faster than the speed of light. Thus, one of the fundamental principles of modern physics allows for secure data transfer.