Publications by authors named "Alvaro Valenzuela"

Grapevine is a fruit crop of major significance worldwide. Fungal attacks are one of the most relevant factors affecting grapevine yield and fruit quality, and powdery mildew caused by is one of the most harmful fungal diseases for this fruit-bearing species. Incorporating resistance genes such as and in new vine selections offers a sustainable alternative to control the disease.

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The aim of this paper is to assess the degradation of a mixture of ibuprofen and clofibric acid and to study the mineralization and toxicity following ozone treatment. To this end, a comparison is presented of the experimental results obtained from ozone treatment using atmospheric air as the feed gas (Experiment I, [O3] = 15 gN/m(3)), with and without addition of H2O2, and those obtained under the same conditions but using concentrated oxygen as the feed gas, obtained by pressure swing adsorption technology (Experiment II, [O3] = 200 gN/m(3)). All tests were conducted using a pilot scale reactor.

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In 1994, a collaborative programme was set up between the University of Surrey and the Chilean Air Force to design and build a low-cost 50 kg microsatellite with instrumentation capable of monitoring the distribution and concentration of stratospheric ozone, particularly over Chilean territory. This resulted in the joint design and development of the ozone-layer monitoring experiment (OLME), which was flown on board the resultant FASat-Bravo microsatellite, launched in July 1998 into an 820 km altitude Sun-synchronous orbit. The nadir-pointing OLME measures the solar ultraviolet light backscattered from the atmosphere in four spectral bands.

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