Xem 1-8 trên 8 kết quả Physics of flight
  • There are few physical phenomena so generally studied which are as misunderstood as the phenomenon of flight. Over the years many books have been written about flight and aeronautics (the science of flight). Some books are written for training new aeronautical engineers, some for pilots, and some for aviation enthusiasts. Books written to train engineers often quickly delve into complicated mathematics, which is very useful for those who wish to make detailed calculations.

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  • The classic text on helicopter aerodynamics, "Aerodynamics of the Helicopter" has been in continuous print for over fifty years. Clearly written and well illustrated, the book focuses on fundamental physical relationships without a highly complex mathematical development. The emphasis on fundamentals makes the book an ideal - indeed, necessary - first step towards more advanced study.

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  • Porcine reproductive and respiratory syndrome (PRRS) is one of the most significant swine diseases worldwide. Despite its relevance, serum biomarkers associated with early-onset viral infection, when clinical signs are not detectable and the disease is characterized by a weak anti-viral response and persistent infection, have not yet been identified. Surface-enhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF MS) is a reproducible, accurate, and simple method for the identification of biomarker proteins related to disease in serum.

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  • All new employees are given a tour of the center, and employees and their immediate family are encouraged to use the center for all their primary care needs. Open houses are held frequently to showcase the facility’s capabilities. The center is available to new employees from the first day of employment. The center filled over 1,100 appointments in October 2009. The center is set up for an average patient visit of 30 minutes. This is considerably longer than an average clinic visit.

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  • Helicopter aerodynamics is the branch of physics dealing with the forces and pressures exerted by air in motion. The atmosphere, the mass of air, which completely envelops the earth, is composed of varying and nonvarying constituents. The nonvarying constituents include oxygen (21%) and nitrogen (78%). The varying constituents include CO2, argon, hydrogen, helium, neon, krypton, and water vapor, which will vary from negligible amounts to approximately 4% by volume (100% relative humidity). Air is a fluid and is affected by changes in temperature, pressure, and humidity....

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  • In recent years, the HCSS agencies have engaged in a sustained effort to foster a new multidisciplinary research agenda that will enable the United States to lead in the development of next-generation engineered systems that depend on ubiquitous cyber control and require very high levels of system assurance.

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  • The field of astronomy and astrophysics has advanced significantly with the advent of orbiting observatories. The ability to observe unobstructed by Earth’s atmosphere has opened new spectral windows and provided clearer, deeper views of the universe. Working with powerful new ground-based tools, astronomers and astrophysicists have revolutionized our understanding of the universe and the physical laws that govern its existence.

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  • To provide appropriate health care to this group GPs and health professionals must be aware of the pre-migratory and ‘flight’ experiences. An understanding of the patients’ history is essential if an appropriate response is to be formulated. For example in the case of victims of torture, medical professionals need to develop the ability to recognise physical signs which would indicate that torture has occurred.

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