Газоаналитические средства системы контроля утечек хлора на основе электрохимических сенсоров

Созданы и внедряются газоаналитические средства контроля и сигнализации утечек хлора на основе электрохимических сенсоров с улучшенными характеристиками

Non-perturbative dynamics of hot non-Abelian gauge fields: beyond leading log approximation

Many aspects of high-temperature gauge theories, such as the electroweak baryon number violation rate, color conductivity, and the hard gluon damping rate, have previously been understood only at leading logarithmic order (that is, neglecting effects suppressed only by an inverse logarithm of the gauge coupling). We discuss how to systematically go beyond leading logarithmic order in the analysis of physical quantities. Specifically, we extend to next-to-leading-log order (NLLO) the simple leading-log effective theory due to Bodeker that describes non-perturbative color physics in hot non-Abelian plasmas. A suitable scaling analysis is used to show that no new operators enter the effective theory at next-to-leading-log order. However, a NLLO calculation of the color conductivity is required, and we report the resulting value. Our NLLO result for the color conductivity can be trivially combined with previous numerical work by G. Moore to yield a NLLO result for the hot electroweak baryon number violation rate.Comment: 20 pages, 1 figur

Yanchep national park

YANCHEP National Park lies just over 30 miles north of Perth, and was gazetted as an A Class Reserve in 1905. It covers more than 6,000 acres

Insect pests : snails and slugs

WHILE snails and slugs are not insects, they have been included in this series of articles, because the damage they cause is very similar to that caused by insect pests—and furthermore, the task of testing and recommending control measures is usually left to the entomologists

Insect pests and their control

METHODS of insect control are sometimes classified under the following four headings— Quarantine, Cultural Methods, Biological Control and Chemical Treatments. Each method has its own particular part to play in preventing the spread and multiplication of insect pests and it is essential for maximum results that everyone— whether he be a commercial grower or a backyard gardener—has a general understanding of the principles involved

Flora and fauna conservation : a plea to landholders

MUCH of the recent discussion on conservation has centred around the importance of wild flower reserves and the necessity for protecting one of the State\u27s most important tourist attractions. Although less important to visitors than the flowers, many of our wild animals hold equal interest for nature lovers and scientists, and they also need protection

National parks of Western Australia

NATIONAL PARKS, says the Encyclopaedia Britannica, are spacious land areas, essentially of primitive or wilderness character, that contain scenery and natural wonder so outstanding in quality that their preservation intact for the benefit, enjoyment and inspiration of the people, is a national concern

The Argentine ant in Western Australia

IN November, 1954, was commenced one of the most ambitious insect control schemes ever launched in Australia. The pest concerned was the Argentine ant (Iridomvrmex humilis) and the authorised expenditure was at the rate of £105,000 per annum for five years