Mechanical ebooks
The Thermodynamics of Phase Equilibrium.pdf
Taken from Introduction: This paper is the first in a series in which thermodynamics is developed beyond its usual scope from a new postulational basis. The postulational basis of classical thermodynamics is firmly established in tradition and a new departure calls for an explanation of the underlying ideas. It is widely believed that thermodynamics consists essentially of the implications of the first, second, and third law of thermodynamics. Actually, however, few if any significant results can be derived from these postulates without using a number of additional assumptions concerning the properties of material systems, such as the existence of homogeneous phases, validity of equations of state and the like.
Ductility Design of Foundations of Highway Bridge Abutments.pdf
Taken from Abstract: Ductility design of foundations of abutments against severe earthquakes as been newly introduced in the Specifications for Highway Bridges in Japan. This paper describes the summary of the ductility design method as well as its background. One of the features of this method is the adoption of a new procedure to evaluate seismic active earth pressure that is applicable up to high seismic loads based on the modified Mononobe-Okabe method. We also conduct back-analyses of the case histories of abutments including foundations damaged in the past earthquakes following the ductility design method proposed here. The results from the back-analyses confirm the applicability of the ductility design method.
Essentials of Echocardiography.pdf
Introduction to Echocardiography and Introduction to Doppler are the acclaimed monographs produced for beginners to get a quick overview of echo and Doppler. This easily understood series, originally published by Medi-Cine and distributed by Ciba-Geigy in the America’s and ICI elsewhere in the world, has been a popular starting place for physicians, sonographers and other allied health professionals to understand the basics of these modalities. A part of this series won an award for medical education from the British Medical Association.
Design Guide Improving Commercial Kitchen Ventilation System Performance.pdf
Taken from Introduction: An effective commercial kitchen ventilation (CKV) system requires balance air balance that is. And as the designer, installer or operator of the kitchen ventilation system, you may be the first person called upon to perform your own “balancing act” when the exhaust hood doesn’t work. Unlike a cooking appliance, which can be isolated for troubleshooting, the exhaust hood is only one component of the kitchen ventilation system. To further complicate things, the CKV system is a subsystem of the overall building heating, ventilating and air-conditioning (HVAC) system. Fortunately, there is no “magic” to the relationship between an exhaust hood and its requirement for replacement or makeup air (MUA). The physics are simple: air that exits the building (through exhaust hoods and fans) must be replaced with outside air that enters the building (intentionally or otherwise). The essence of air balance: “air in” = “air out!”
LAYMAN’s Guidebook on how Develop a Small Hydro Site.pdf
Taken from Definition of small hydropower: There is no consensus in EU member states on the definition of small hydropower: Some countries like Portugal, Spain, Ireland, and now, Greece and Belgium, accept 10 MW as the upper limit for installed capacity. In Italy the limit is fixed at 3 MW (plants with larger installed power should sell their electricity at lower prices); in France the limit was established at 8 MW and UK favour 5 MW. Hereunder will be considered as small any scheme with an installed capacity of 10 MW or less. This figure is adopted by five member states, ESHA, the European Commission and UNIPEDE (International Union of Producers and Distributors of Electricity).
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