Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
Some engineering fields change dramatically from year to year, with radical breakthroughs in technology happening often. These fields may have hundreds or more papers and texts published each year on the latest best practices. Maintenance engineering is a field which, for the most part, hasn’t fundamentally changed much over the years. And there aren’t many sources for the latest information or best practices. But in recent years, maintenance engineering has, more and more, put an emphasis on true reliability. A business which is asset-intensive, such as manufacturing, relies on a reliability-centered field of engineering to be successful. In my opinion, reliability engineering itself has become a technology used for the purpose of improving manufacturing capacity, without capital investment. The Maintenance Engineering Handbook has long been regarded as the premier source for expertise on maintenance theory and practices for any industry. This text has been considered invaluable and now, this latest edition defines those practices that are critical to developing an effective reliability engineering function within your business. This text is no longer just about mechanical, electrical, and civil maintenance engineering. Instead, the seventh edition also focuses on recognized and proven best practices in maintenance, repair, and overhaul (MRO) inventory management, root-cause analysis, and performance management. Keith Mobley, the editor in chief of this text, has more than 35 years of direct experience in corporate management, process and equipment design, and reliability-centered maintenance methodologies. For the past 16 years, he has helped hundreds of clients across the globe achieve and sustain world-class performance through the implementation of maintenance and reliability engineering principles. You may spend your career worrying about excessive downtime and high maintenance costs as a result of repetitive failures. As a fellow veteran maintenance and reliability engineer, I encourage you to recognize that this field is changing and improvements are being made that empower today’s business leaders. This text can help you reap the benefits of those changes so that your hard work produces the best possible results.
Throughout the history of the study of the Earth, geologists have attempted to understand the factors and forces which shape the surface of our globe. In this book, we shall attempt to summarise the current theories of how the gross surface layer of the Earth evolves tectonically.
Employing two recently studied crustal-scale shear zones as type examples, this paper summarizes the major Palaeoproterozoic (Svecokarelian) shear tectonics of the central Fennoscandian Shield and demonstrates that this part of the Shield was not as stable during the Svecokarelian Orogeny as commonly assumed.
The collision of the Svecofennian island arc with the Karelian Continent first created numerous NW-SE trending folds and thrusts of stages Di and D2, which were then modified by successive shearing during stages D3 and D4. Stage D3 built up a system of N-S trending shear zones, here named the Savolappi Shear System, the type example of which is the Hir-vaskoski Shear Zone. This is a dextral strike-slip shear zone at least 150 km long and 10-30 km wide, characterized by blastomylonitic fault rocks and various structures such as hook folds, Z-fo!ds and sheath folds associated with the principal displacement zone, synthetic Riedel shears, and pinnate shears. The traces of the axial planes of F3 en-echelon folds deviate 15е—30е anticlockwise from the plane of the principal displacement zone. Other members of the Savolappi Shear System are the Pajala Shear Zone in northern Sweden and the Russian North Karelia Shear Zone in the east.
Stage D4 created a conjugate shear system called the Finlandia Shear System, the type example of which is the Oulujarvi Shear Zone. This is a NE-SW trending sinistral strike-slip shear zone more than 250 km long and 20-30 km wide across its southwestern end. It is composed of a NE-SW trending principal displacement zone, synthetic Riedel shears, and pinnate shears with antithetic Riedel shears in a NW-SE direction. Typical fault rocks within these shears are S-C mylon-ites. The axial-plane traces of F+folds of all scales diverge by 20°-40° clockwise from the plane of the principal displacement zone. The Kuopio Shear Zone is a conjugate NW-SE trending counterpart of the Oulujarvi Shear Zone. As a whole, the Finlandia Shear System forms a conjugate network of NW-SE and NE-SW trending shear zones which occupies most of the northern and central Fennoscandian Shield.
Shelley's lines paint a picture of a lost world, a world resurrected from the antiquities of Greek mythology. But Shelley had more than ancient legends to go on; he was acutely aware of the discoveries of great extinct beasts from the writings of contemporary naturalists. It is known that Shelley attended lectures on mineralogy at Oxford and possessed a library of scientific works which included the writings of Newton, Laplace, Herschel, Davy and Erasmus Darwin. By 1812 he was familiar with James Parkinson's Organic remains published in three volumes between 1804 and 1811.
To succeed in writing a book about the age of mammals in Europe appears to be a difficult goal, especially in light of such brilliant precedents as The Age of Mammals by H. F. Osborn and The Age of Mammals by Bjo¨rn Kurten. In between this book and the 1971 version of The Age of Mammals there is not only the extraordinary scientific personality of Kurten but also thirty years of additional knowledge about fossil mammals and the environment in which they evolved.
In this book, management is defined as the process of generating plans and supervising their implementation. For a mineral resource, these plans relate to a strategy that determines how the resource is to be exploited. The process has two important aspects—one is the organizational setting within which it occurs, and the other is the set of techniques available for the analyses. Ideas in both areas have evolved rapidly in recent years and this book presents an authoritative review of the current state of the art.
The geological structure of the Tunka Goltsy (the Tunka Range) of the East Sayany is characterized by a complex nappe-fold structure, composed mainly of Paleozoic terrigenous and carbonate rocks and their metamorphosed analogues [1–3]. It is generally recognized that the nappe-fold structure of the East Sa-yany, including its southeastern segment, regarded as the Tunka terrain [3] or Ilchirskaya zone [4], formed in the Ordovician as a result of collision between the Tuva–Mongolian microcontinent and the Siberian continent. As referred to in [5], the Ordovician–Mid-dle Paleozoic deformations over the entire vast territory of Central Asia, from the Olkhon zone of the Pribaikalie to the North Kazakhstan, were manifested as a result of the closing of the oceanic basin and the subsequent collision between the Kazakhstan– Baikalian complex continent (including the Tuva– Mongolian microcontinent) and the Siberian continent. In the Ordovician the Olkhon nappe-overthrust zone was formed along the southeastern framework of the Siberian Craton. In addition, the metamorphism was manifested over the entire vast territory of the East Sayany that could probably be connected with nappe formation. In the Late Ordovician–Silurian, the oblique slip-thrust structures, magmatism, and meta-morphism were manifested in the Sangilen highlands and Tuva. Later, the deformations continued. In the Late Devonian–Early Carboniferous, the dextral strike-slip fault Charysh–Terektinskaya zone was formed; in the Late Carboniferous, the Kurayskaya and Kuznetsko–Teletsko–Bashkaus sinistral strike-slip shear zones were formed.
An Ultramafic Lift at the Mid-Atlantic Ridge: Successive Stages of Magmatism in Serpentinized Peridotites from the 15°N Region. Mathilde Cannat and lohn F Casey
Gabbroie Dikelets in Serpentinized Peridotites from the Mid-Atlanti Ridge at 23°20'N P. Tartarotti, M. Cannat and C. Me el
Mafic and Ultramafic Intrusions into Upper Mantle Peridotites from Fast Spreading Centers of the Easter Micropiate (South East Pacific) M. Constantin, R. Hekinian, D. Ackermand and P. Stoffers
Part I: State of the Mantle: Properties and Dynamic Evolution 1 Long-Wavelength Mantle Structure: Geophysical Constraints and Dynamical Models Maxwell L. Rudolph, Diogo L. Lourenço, Pritwiraj Moulik, and Vedran Lekić 2 Experimental Deformation of Lower Mantle Rocks and Minerals Lowell Miyagi 3 Seismic Wave Velocities in Earth’s Mantle from Mineral Elasticity Johannes Buchen 4 From Mantle Convection to Seismic Observations: Quantifying the Uncertainties Related to Anelasticity Bernhard S. A. Schuberth and Tobias Bigalke
