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Elements classify heroin from the "Golden" regions

thumbnail image: Elements classify heroin from the Golden regions

The contents of 12 elements along with seven elemental ratios have been used to assign more than 900 heroin samples to the Golden Triangle or the Golden Crescentby a procedure which is faster than analysing their organic compounds.

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Best spectroscopic technique for coffee typing

thumbnail image: Best spectroscopic technique for coffee typing

IR spectroscopy and LC/MS can differentiate between two coffee bean varieties using principal components analysis but CD and NMR spectroscopy both fail.

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Boost for old fingerprint technique

thumbnail image: Boost for old fingerprint technique

The conventional fingerprint imaging technique of photoluminescence has been modified by introducing a lysozyme-binding DNA species that eliminates background fluorescence and gives a more sensitive technique.

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Conflicting Turin shroud tests

thumbnail image: Conflicting Turin shroud tests

The news that the Bible may be wrong when it refers to people riding camels during the time of Christ reminded me of another biblical controversy, that surrounding the Turin shroud.

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Latest comment

The Shroud is a fascinating subject on so many levels scientifically, spiritually, and historically. For a great read, check out the new novel by an American author, "The Linen God" on Amazon.

 

Protecting citrus trees from the "green menace"

thumbnail image: Protecting citrus trees from the green menace

The greening disease Huanglongbiong which threatens citrus trees worldwide can be detected from the volatile biomarkers given off by the pathogen, even though there are no visible symptoms of infection.

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Indoor pyrethroids put children at risk

thumbnail image: Indoor pyrethroids put children at risk

The levels of pyrethroid insecticides on household floors correlate with those in the urine of infants in California, reflecting their increased use since organophosphate pesticides were banned.

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Arctic study reveals warmest summers for 44,000 years due to greenhouse gases

thumbnail image: Arctic study reveals warmest summers for 44000 years due to greenhouse gases

A recent study of the ages of exposed mosses on Baffin Island in the Arctic has shown that the last century was warmer than any preceding century over the last 44,000 years, primarily as a result of greenhouse gases.

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NASA's Opportunity and Curiosity rovers agree on water

thumbnail image: NASAs Opportunity and Curiosity rovers agree on water

The Curiosity and Opportunity rovers on Mars have both found evidence that water was once on the surface of the planet. This is one of the observations in a series of papers published in a special collection in Science.

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Accurate urinary bladder cancer diagnosis by automated FTIR

thumbnail image: Accurate urinary bladder cancer diagnosis by automated FTIR

A novel FTIR spectroscopic test for urinary bladder cancer developed by scientists in Germany has been improved to give a more accurate diagnosis, distinguishing patients from those with urinary tract infections.

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Abundant molecular chlorine found in the Arctic atmosphere

thumbnail image: Abundant molecular chlorine found in the Arctic atmosphere

An international team of scientists has found unprecedented levels of molecular chlorine in the Arctic atmosphere, originating from snow-covered land or surface ice, with huge implications for atmospheric chemistry.

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