Chronos is one of the many Smalltalk-related blogs syndicated on Planet Smalltalk
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Discussion of the The Chronos Date/Time Library, the Smalltalk programming language, and new developments of significance in science and technology.

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2010-05-12

Chemists create novel DNA assembly line

From Physorg.com:

Chemists at New York University and China's Nanjing University have created a DNA assembly line that has the potential to create novel materials efficiently on the nanoscale. Their work is reported in the latest issue of the journal Nature.
Full article


Spiders at the nanoscale: Molecules that behave like robots

From Physorg.com:

A team of scientists from Columbia University, Arizona State University, the University of Michigan, and the California Institute of Technology (Caltech) have programmed an autonomous molecular "robot" made out of DNA to start, move, turn, and stop while following a DNA track.
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2010-05-11

DNA could be backbone of next generation logic chips

From Pysorg.com:

In a single day, a solitary grad student at a lab bench can produce more simple logic circuits than the world's entire output of silicon chips in a month.
Full article


New probe promises to reveal brain's mysteries

From Physorg.com:

Dozens of potential applications await a new neurological probing platform developed by European scientists. The new system offers the promise of new cures for neurological disease and a better understanding of how our brain works.
Full article


2010-05-10

Untangling the quantum entanglement behind photosynthesis

From Physorg.com:

The future of clean green solar power may well hinge on scientists being able to unravel the mysteries of photosynthesis, the process by which green plants convert sunlight into electrochemical energy. To this end, researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC), Berkeley have recorded the first observation and characterization of a critical physical phenomenon behind photosynthesis known as quantum entanglement.
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New technique permits development of enzyme tool kit

From PhysOrg.com:

An Arizona State University graduate student, Jinglin Fu, in collaboration with Biodesign Institute researchers Neal Woodbury and Stephen Albert Johnston, has pioneered a technique that improves on scientists' ability to harness and modulate enzyme activity.
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2010-05-07

Fab new laser nano-fabrication technology

From PhysOrg.com:

Laser interference lithography can produce very high-resolution nano-scale surface patterns at low cost, and now European researchers have made important breakthroughs in the area.
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2010-05-02

New Stanford tool enables wider analyses of genome 'deep sequencing'

From PhysOrg.com:

The new Stanford-developed, web-based algorithm allows scientists to plumb the unprecedented depths of the data provided by new "deep-sequencing" techniques to reveal a pantheon of control regions for nearly any gene. The effect is like expanding a researcher's field of vision from a pencil-thin beam of light trained mainly on the regions near coding sequences to a sweeping spotlight illuminating the contributions of distant genomic regions.
Full article


Scientists provide groundbreaking new understanding of stem cells

From PhysOrg.com:

Yanes shifted though the data on stem cells and identified an unexpected pattern: stem cell metabolites had highly unsaturated structures compared with mature cells, and levels of highly unsaturated molecules decreased as the stem cells matured. Highly unsaturated molecules, which contain little hydrogen, can easily react and change into many other different types of molecules.

"The study reveals an astounding cellular strategy," commented Yanes. "The capacity of embryonic stem cells to generate a whole spectrum of cell types characteristic of different tissues (a phenomenon referred to as plasticity) is mirrored at the metabolic level."
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2010-04-30

New research could help develop gamma ray lasers and produce fusion power

From PhysOrg.com:

Positronium is a short-lived system in which an electron and its anti-particle are bound together. In 2007, physicists at the University of California, Riverside created molecular positronium, a brand-new substance, in the laboratory. Now they have succeeded in isolating for the first time a sample of spin polarized positronium atoms.
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