Cesar González

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Ab initio macromolecular phasing has been so far limited to small proteins diffracting at atomic resolution (beyond 1.2 A) unless heavy atoms are present. We describe a general ab initio phasing method for 2 A data, based on combination of localizing model fragments such as small á-helices with Phaser and density modification with SHELXE. We implemented(More)
A scanning tunnelling microscope is used to pull a polythiophene wire from a Au(111) surface while measuring the current traversing the junction. Abrupt current increases measured during the lifting procedure are associated with the detachment of molecular subunits, in apparent contradiction with the expected exponential decrease of the conductance with(More)
'The relationship between stimulus-response mappings and the detection of novel stimuli in a simulated luggage screening task', This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan or sub-licensing, systematic supply or distribution in any form to anyone is(More)
Real-time terrain visualization plays an important role in multiple popular applications. In these applications, displacement mapping algorithms (both per-vertex and per-pixel methods) can be used to improve the accuracy and performance of terrain rendering. Per-vertex methods are usually implemented by means of hardware tessellation, and per-pixel(More)
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