 |
| Author | Post |
|---|
hand_research
Gold Member
| Joined: | Tue Oct 9th, 2007 |
| Location: | Eindhoven, Netherlands |
| Posts: | 715 |
| Your Age: | 36 - 45 | | Palmistry Skills: | Professional | | Your current mood: | |
| Status: |
Offline
|
| Mana: |   |
|
Posted: Wed Aug 13th, 2008 01:00 am |
|
 
http://www.handresearch.com/news/fingerprints-reveal-more.htm
New method makes Fingerprints reveal more
Until now, fingerprints were only able to allow forensic experts to discover the identity of a person, but a new method of analyzing them is able to extract information about the substances that the person they were taken from has come in contact with.
The team led by R. Graham Cooks, a analytical chemistry professor, came up with a method of discovering chemical substances that reside in fingerprints. If a person is handling, let's say, cocaine, the drug sticks on his or her fingers in very small quantities of a few parts per million, no matter how well that person would be cleaning his hands. This tiny amount of the substance is then transferred to the objects that the person touches and remains there located at the point of the fingerprint's ridges.
This new method will allow the police to separate the fingerprints of the person who committed a crime from the ones of other people that just happened to touch objects at the crime scene.
The same method can be used to separate one person's fingerprints from beneath others, where they appear in layers. To do this, forensic experts would need to have only a small part of the fingerprint separated from the others. By analyzing the distribution of chemical compounds found in this part of the fingerprint, they would be able to filter it from the layer of fingerprints, thus acquiring a clear image of it. Forensic experts will be able to put Mr. Cooks' research into practice in about two years, when it will be ready for mass usage.
Source: New method makes fingerprints reveal more than before
MORE FINGERPRINT NEWS:
FINGERPRINT | FINGERPRINTS
Last edited on Wed Aug 13th, 2008 01:03 am by hand_research
____________________
Martijn van Mensvoort
Find the latest news about palmistry & your hands at my website:
http://www.handresearch.com
|
hand_research
Gold Member
| Joined: | Tue Oct 9th, 2007 |
| Location: | Eindhoven, Netherlands |
| Posts: | 715 |
| Your Age: | 36 - 45 | | Palmistry Skills: | Professional | | Your current mood: | |
| Status: |
Offline
|
| Mana: | |
|
Posted: Wed Aug 13th, 2008 01:08 am |
|
 
http://www.handresearch.com/news/leonardo-da-vinci-fingerprint.htm
The Fingerprint of Leonardo da Vinci
Leonardo da Vinci may have had an Arab heritage, according to Italian researchers who have isolated and reconstructed the Renaissance master's fingerprint. The fingerprint represents the only biological trace of the Florentine genius, said Luigi Capasso, an anthropologist at Chieti University.
"It is actually the first evidence of Leonardo's corporeality," Capasso told Discovery News.
Indeed, nothing is left of the painter, engineer, mathematician, philosopher and naturalist. The remains of Leonardo, who died in 1519 in Amboise, France, were dispersed in the 16th century during religious wars.
The research began in 2002, following the discovery of hundreds of fingerprints in the master's notebooks and drawings. "Not all belonged to Leonardo. There was a mixture of traces, with marks also left by his apprentices," said Alessandro Vezzosi, director of the Museo Ideale in the Tuscan town of Vinci, where the artist was born in 1452 and where the fingerprints are collected. Capasso and colleagues at the University of Chieti first worked on isolating and extracting the real Leonardo's fingerprints.
Through nondestructive spectrometry, they examined about 200 fingerprints from about 52 papers and found that only in a few cases had Leonardo left a complete fingerprint. In most cases, the partial fingerprints consisted of the radial half of the left thumb, indicating that left-handed Leonardo was just moving and leafing through the papers.
"But when we examined the 'Portrait of a Lady with an Ermine', we noticed that the artist used his finger when applying the finishing touches to the necklace's shadow," Capasso said. After scouring manuscripts and notebooks, the researchers found two other fingerprints that matched and completed the Ermine markings. The result was an entire fingertip, possibly belonging to the left forefinger.
Fingerprints are unique and don't change over a lifetime. Analysis of the skin's arches, loops and whorls — a science known as dermatoglyphics — has shown that there is a link between fingerprints and populations.
In the case of Leonardo's fingertip, patterns and ridges pointed to the Middle East, the researchers concluded.
"The fingerprint features patterns such as the central whorl that are dominant in the Middle East. About 60 percent of the Middle Eastern population display the same dermatoglyphic structure found in the fingerprint," Capasso said.
The discovery would support Vezzosi's claim that Leonardo's mother was not a local peasant girl as previously thought, but a Middle Eastern slave. According to Vezzosi, records unearthed in Vinci offer substantial evidence that Leonardo's father, a craftsman called Ser Piero Da Vinci, owned a Middle-Eastern female slave named Caterina.
"It was common in 15th century Tuscany to own slaves from the Middle East," said Vezzosi. Indeed, in 1452, the same year of Leonardo's birth, a law was passed in Florence that gave slave owners greater rights over their slaves.
Shortly after the law was passed, Ser Piero married Caterina off to one of his workers. The woman had just given birth to a boy called Leonardo. Pictures and details of the dermatoglyphic study will be shown on Sunday at an exhibition at the museum of history of biomedical science at Chieti University.
Source: Da Vinci Fingerprint Reveals Arab Heritage?
Related sources:
Fingerprint method breakthrough
UK 'Celebrity Handprints' book
USA Celebrities lending a Hand for charity
Dermatoglyphics: a review
____________________
Martijn van Mensvoort
Find the latest news about palmistry & your hands at my website:
http://www.handresearch.com
|
Helen B
PI Registered Member
| Joined: | Sun Mar 23rd, 2008 |
| Location: | New Jersey USA |
| Posts: | 279 |
| Your Age: | 26 - 35 | | Palmistry Skills: | Elementary | | Your current mood: | life is worth living |
| Status: |
Offline
|
| Mana: |  |
|
Posted: Wed Aug 13th, 2008 01:50 am |
|
in article:
In the case of Leonardo's fingertip, patterns and ridges pointed to the Middle East, the researchers concluded.
"The fingerprint features patterns such as the central whorl that are dominant in the Middle East. About 60 percent of the Middle Eastern population display the same dermatoglyphic structure found in the fingerprint," Capasso said.
I did not know that fingerprints can point to cultural background. Is it possible? What is a difference in the fingerprints between Asians and Europeans then?
I am just curious, it is very interesting statement there.
|
hand_research
Gold Member
| Joined: | Tue Oct 9th, 2007 |
| Location: | Eindhoven, Netherlands |
| Posts: | 715 |
| Your Age: | 36 - 45 | | Palmistry Skills: | Professional | | Your current mood: | |
| Status: |
Offline
|
| Mana: | |
|
Posted: Wed Aug 13th, 2008 02:41 am |
|
Hello Helen,
Well spotted! Yes, I am aware that there are fingerprints variations among populations. However, I am also aware that these differences are (only?) applicable to populations, not individuals.
So, I have the same question in my mind. And it is certainlly NOT answered by the article!
And I have doubts whether a search on the internet will bring us any further on this... 
____________________
Martijn van Mensvoort
Find the latest news about palmistry & your hands at my website:
http://www.handresearch.com
|
hand_research
Gold Member
| Joined: | Tue Oct 9th, 2007 |
| Location: | Eindhoven, Netherlands |
| Posts: | 715 |
| Your Age: | 36 - 45 | | Palmistry Skills: | Professional | | Your current mood: | |
| Status: |
Offline
|
| Mana: | |
|
Posted: Wed Aug 13th, 2008 02:53 am |
|
Okay Helen,
I already found a first answer in this other article:
http://www.foxnews.com/story/0,2933,234140,00.html
"Certain distinctive features are more common in the fingerprints of some ethnic populations, experts say.
"The one we found in this finger tip applies to 60 percent of the Arabic population, which suggests the possibility that his mother was of Middle Eastern origin," Capasso said.
Other experts, however, say that determining ethnicity based on fingerprints is vague.
What the science says, "generally speaking, is that if your parent has a lot of arches, you'll probably have a lot of arches," said Simon Cole, associate professor of criminology, law and society at the University of California at Irvine.
"The science essentially comes up with breakdowns: x percent of Asians have arches, x have whorls, x have loops. Some races have very low incidences of some patterns and very high incidences of others."
But "you can't predict one person's race from these kinds of incidences," he said, especially if looking at only one finger."
Helen, this last comment indicates that the antropologists were going 'one bridge too far', by concluding that a whorl is indicative for having Arabic roots.
 Hahaha ... I hope their 'fingerprint-reconstruction-work' is more solid than their knowledge about fingerprints!
Thanks for your comment Helen!!
____________________
Martijn van Mensvoort
Find the latest news about palmistry & your hands at my website:
http://www.handresearch.com
|
Helen B
PI Registered Member
| Joined: | Sun Mar 23rd, 2008 |
| Location: | New Jersey USA |
| Posts: | 279 |
| Your Age: | 26 - 35 | | Palmistry Skills: | Elementary | | Your current mood: | life is worth living |
| Status: |
Offline
|
| Mana: | |
|
Posted: Wed Aug 13th, 2008 05:29 am |
|
Matijn wrote:
Hahaha ... I hope their 'fingerprint-reconstruction-work' is more solid than their knowledge about fingerprints!
I hope so too. People's perception sometime is lead by their believes.
|
hand_research
Gold Member
| Joined: | Tue Oct 9th, 2007 |
| Location: | Eindhoven, Netherlands |
| Posts: | 715 |
| Your Age: | 36 - 45 | | Palmistry Skills: | Professional | | Your current mood: | |
| Status: |
Offline
|
| Mana: | |
|
Posted: Fri Aug 15th, 2008 08:35 pm |
|
Hmmm ... this article - about the same research mentioned above - says that this new fingerprints technology (called 'DESI') might provide help to detect diseases from fingerprints!!!!
 
http://www.handresearch.com/news/fingerprint-spectrometer-detects-signs-of-disease.htm
Fingerprint spectrometer detects drugs,
and potentially signs of disease
A new analytic Fingerprint tool could make it easier to spot terrorists and to diagnose diseases from telltale chemical markers, but could also pose new privacy risks.
Chemists reveal traces of explosives and drugs and, potentially, signs of disease. Fingerprints can tell a lot more about people — what they’ve touched, what they’ve eaten, what drugs they’ve taken — than just their identities. Now, a new analytic tool could make it easier to spot terrorists and to diagnose diseases from telltale chemical markers, but could also pose new privacy risks.
GOTCHA! Traces of cocaine delineate a fingerprint left on glass. By bouncing water droplets off a surface, chemists can image fingerprints and sniff out thousands of different chemicals simultaneously.
The method, described in the Aug. 8 Science, can map a fingerprint based on the presence of virtually any water-soluble chemical. “It’s the difference between a black-and-white picture and a full-color picture,” says chemist Graham Cooks of Purdue University in West Lafayette, Ind.
Cooks and his colleagues singled out traces of chemicals, such as the high-power explosive RDX, cocaine and THC, marijuana’s main active ingredient. The researchers used a technique called DESI, pioneered by him and his collaborators in 2004. In DESI, researchers spray microscopic droplets of water onto a sample. The first droplets that hit the sample form a film that dissolves chemicals on the sample’s surface. When additional droplets splash onto the liquid film, some droplets bounce back and are sucked into a tube. There, the droplets are heated to isolate the chemicals, which usually break into smaller molecules. Finally, the device performs the traditional technique of mass spectrometry, which identifies molecules according to their molecular weight.
Researchers mapped the fingerprints by using the device to scan individual spots — each one-fifth of a millimeter wide — one at a time. Mass spectrometers, Cooks says, are among the most sensitive and precise tools available to the chemist. “When they really need answers in CSI — they put things in the mass spec,” he adds.
But traditional mass spectrometry requires samples to be analyzed in a vacuum, while DESI can be used in the field and on any surface. “DESI is extremely powerful and promising,” says Facundo Fernandez, a chemist at the Georgia Institute of Technology in Atlanta. “It gives a ton of information.”
Cooks says DESI could also be tested as a tool for medical diagnosis. In principle, fingerprints could contain chemicals, not found through blood or urine tests, that indicate the presence of a disease.
DESI is not the first technique that’s been used for finding chemicals in fingerprints. Recently, researchers have experimented with a technique that analyzes chemicals by scanning them with a laser.
Also, last year, Sergei Kazarian of Imperial College London and his collaborators showed how they could do that by bouncing infrared rays off an object. The infrared method is faster, doesn’t damage the sample and doesn’t require knowing in advance where a fingerprint is likely to be, Kazarian points out.
Cooks says the effectiveness of the two techniques should be compared in blind tests. “This is where we need to have a shoot-off at the O.K. Corral.” Meanwhile, if such chemical analytic tools become available as consumer gadgets, anyone — employers, spouses, school principals — could potentially discover details just by pointing their DESI pen at fingerprints or dermatoglyphics on somebody’s paper cup. “This is a major concern,” Cooks says. “The implications for privacy are written all over this.”
Source: Fingerprints go hightech
MORE FINGERPRINT NEWS:
FINGERPRINT | FINGERPRINTS
Related sources:
Fingerprints detects drugs and signs of disease
Fingerprints reveal more
Fingerprint method breakthrough
How fingerprinting works
UK 'Celebrity Handprints' book
A fingerprint characteristic associated with the early prenatal environment
Dermatoglyphics: a review
Last edited on Fri Aug 15th, 2008 08:36 pm by hand_research
____________________
Martijn van Mensvoort
Find the latest news about palmistry & your hands at my website:
http://www.handresearch.com
|
Current time is 05:47 pm | |
|
|
|
|
