¿Ex oriente lux?

Fiat lux

Just as engineers learnt to harness the power of electrons in transistors and microchips—which revolutionized modern society—physicists and biologists are now learning how to tame photons. Their work is generating exciting new possibilities for optical microscopy, with a resolution and level of detail hitherto undreamt of. Biophotonics is a new and exciting research field that is already delive...

Detection of DNA damage by use of Escherichia coli carrying recA'::lux, uvrA'::lux, or alkA'::lux reporter plasmids.

Plasmids were constructed in which DNA damage-inducible promoters recA, uvrA, and alkA from Escherichia coli were fused to the Vibrio fischeri luxCDABE operon. Introduction of these plasmids into E. coli allowed the detection of a dose-dependent response to DNA-damaging agents, such as mitomycin and UV irradiation. Bioluminescence was measured in real time over extended periods. The fusion of t...

Detection of DNA Damage by Use of Escherichia coli Carrying recA9::lux, uvrA9::lux, or alkA9::lux Reporter Plasmids

Relationships between growth stress and wood properties in Poplar 1 I - 69 ( Populus deltoides Bartr . cv . ” Lux ” ex I - 69

*Corresponding author: [email protected], 8 Tel +33-4 6714 4918 9 Fax +33-4 6714 4792 10 11 2008, Annals of Forest Sciences, 65, 307 12 13 Abstract Six inclined poplar I-69 (Populus deltoids cv. I-69/55) trees were collected for studying the influence 14 of growth stress level on wood properties. Growth stress indicator (GSI) was measured at 8 positions around the 15 periphery of each trunk at...

Cryptanalysis of the Hash Function LUX-256

LUX is a new hash function submitted to NIST’s SHA-3 competition. In this paper, we found some non-random properties of LUX due to the weakness of origin shift vector. We also give reduced blank round collision attack, free-start collision attack and free-start preimage attack on LUX-256. The two collision attacks are trivial. The freestart preimage attack has complexity of about 2 and requires...