Showing 20 articles starting at article 141

< Previous 20 articles        Next 20 articles >

Categories: Engineering: Biometric, Geoscience: Volcanoes

Return to the site home page

     (via sciencedaily.com) 

The flavor and aroma of a fine chocolate emerge from its ecology, in addition to its processing. But can you be certain that the bar you bought is really from the exotic locale stated on the wrapper? Now, researchers are presenting a method for determining where a particular chocolate was produced by looking at its chemical 'fingerprint.'

     (via sciencedaily.com) 

Normally, it takes pricey equipment and expertise to create an accurate 3D reconstruction of someone's face. Now, researchers have pulled off the feat using video recorded on an ordinary smartphone. Shooting a continuous video of the front and sides of the face generates a dense cloud of data. A two-step process uses that data, with some help from deep learning algorithms, to build a digital reconstruction of the face.

     (via sciencedaily.com) 

A team of physicists has successfully developed the first nonlinear camera capable of capturing high-resolution images of the interior of solid objects using terahertz (THz) radiation.

     (via sciencedaily.com) 

Hemp is technically legal in Texas, but proving that hemp is not marijuana can be a hurdle, requiring testing in a licensed laboratory. Now, a team of researchers have created a 'hemp scanner' that could easily fit in a police cruiser and distinguish hemp and marijuana instantly, without damaging any of the product.

     (via sciencedaily.com) 

An experimental fingerprint detection approach can identify traces of cocaine on human skin, even after someone has washed their hands -- and the test is also smart enough to tell whether an individual has actually consumed the class A drug, or simply handled it.

     (via sciencedaily.com) 

Police have long relied on the unique whorls, loops or arches encoded in fingerprints to identify suspects. However, they have no way to tell how long ago those prints were left behind -- information that could be crucial to a case. A preliminary new study suggests that could change. Researchers report that they could link compounds contained in fingerprints with their age.   

     (via sciencedaily.com) 

Recent studies have shown metallic objects have their own magnetic fingerprints based on size, shape and physical composition. Scientists look to leverage these observations to potentially create a smaller and cheaper system that is just as effective as their larger counterparts.

     (via sciencedaily.com) 

The smuggling of contraband is a threat in airport security and risks have increased in modern times with the uptick in parcel delivery, but security inspection methods have not seen any significant improvements. Researchers propose a technique for efficient detection of contraband items. Typically, airport security uses X-ray imaging to quickly scan baggage, but this suffers limitations. To address this, luggage with suspicious X-ray results undergoes supplementary screening using energy-dispersive X-ray diffraction.

     (via sciencedaily.com) 

Currently, the detection of food poison outbreaks caused by bacteria takes a long time and is expensive, but this does not have to be the case in the future. Researchers have found a method for the precise identification of bacteria in just a few hours on a mobile-phone-sized device that costs about 200 times less than alternative approaches.

     (via sciencedaily.com) 

A new cancer-detecting tool uses tiny circuits made of DNA to identify cancer cells by the molecular signature on their surface. The circuits work by attaching to the outside of a cell and analyzing it for proteins that are more abundant on some cell types than others. The devices distinguish cell types with higher specificity than previous methods, giving researchers hope their work could improve diagnosis, or give cancer therapies better aim.

     (via sciencedaily.com) 

A state-of-the-art fingerprint detection technology can identify traces of heroin on human skin, even after someone has washed their hands -- and it is also smart enough to tell whether an individual has used the drug or shaken hands with someone who has handled it.

     (via sciencedaily.com) 

Researchers have developed a quantum communication chip that is 1,000 times smaller than current quantum setups, but offers the same superior security quantum technology is known for.

     (via sciencedaily.com) 

A research team is developing EarEcho, a biometric tool that uses modified wireless earbuds to authenticate smartphone users via the unique geometry of their ear canal. A prototype of the system proved roughly 95% effective.

     (via sciencedaily.com) 

Scientists have designed an ultra-miniaturized device that could directly image single cells without the need for a microscope or make chemical fingerprint analysis possible from a smartphone.

     (via sciencedaily.com) 

A new chip-based platform integrates nanopores and optofluidic technology with a feedback-control circuit to enable an unprecedented level of control over individual molecules and particles on a chip for high-throughput analysis.

     (via sciencedaily.com) 

A new test could help police to determine when criminals or witnesses are lying about their knowledge of a person's identity.

     (via sciencedaily.com) 

Engineers have devised a method to create pieces of 'smart' glass that can recognize images without requiring any sensors or circuits or power sources.

     (via sciencedaily.com) 

An imaging technique could make it possible to peer inside cells and watch dozens of different molecules at once -- by labeling them with short strands of light-up DNA that blink on and off with their own unique rhythm. Though they're all the same color, the technique makes it possible to distinguish as many as 56 types by their twinkling, more cheaply than traditional methods and without fading over time.

     (via sciencedaily.com) 

Engineers have developed a spectrometer so small and simple that it could integrate with the camera of a typical cellphone without sacrificing accuracy.

     (via sciencedaily.com) 

Researchers have found multiple applications for the CRISPR gene editing technology since it came into use by the scientific community.