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Végétation --- vegetation --- Phytoécologie --- plant ecology --- Communauté aquatique --- Aquatic communities --- Plante aquatique --- Aquatic plants --- Marécage --- Swamps --- Tourbière --- Peatlands --- Great Britain --- vegetation. --- Plant communities --- Vegetation classification --- VEGETATION --- PLANT COMMUNITIES --- HEATHS --- MIRES --- GREAT BRITAIN --- CLASSIFICATION --- WOODLANDS --- SCRUB
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Brain --- Aged. --- Mental Disorders. --- Geriatric Psychiatry. --- #KVHB:Psychogeriatrie --- Psychogeriatrie --- Psychiatry, Geriatric --- Psychogeriatrics --- Behavior Disorders --- Diagnosis, Psychiatric --- Mental Disorders, Severe --- Psychiatric Diagnosis --- Disorder, Mental --- Disorder, Severe Mental --- Disorders, Behavior --- Disorders, Mental --- Disorders, Severe Mental --- Mental Disorder --- Mental Disorder, Severe --- Severe Mental Disorder --- Severe Mental Disorders --- Mentally Ill Persons --- Elderly --- Geriatrics --- Longevity --- physiopathology. --- Psychogériatrie --- 606.5 --- psychogeriatrie (gez) --- Psychiatric Diseases --- Psychiatric Disorders --- Psychiatric Illness --- Psychiatric Disease --- Psychiatric Disorder --- Psychiatric Illnesses --- Mental Illness --- Illness, Mental --- Mental Illnesses --- Aged --- Mental Disorders --- Geriatric Psychiatry --- physiopathology
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"Fatigue failures of blades is one of the most vexing problems of turbomachine manufacturers, ever since the steam turbine became the main stay for power generating equipment and gas turbines are increasingly used in the air transport. The problem is very complex, involving the excitation due to aerodynamic stage interaction; damping due to material deformation, friction at slip surfaces and aerodynamic damping; vibration of an asymmetric aerofoil tapered along its length and mounted on a rotating disc at a stagger angle. The problem is also governed by heat transfer analysis and thermal stresses. This book deals with a basic understanding of free vibratory behaviour of turbine blades-free standing, packetted, and bladed-discs. The analysis is based on continuous and discrete models using energy principles and finite element techniques. A clear understanding of the interference phenomenon in a thin cambered airfoil stage in subsonic flow is presented to determine the nonsteady excitation forces acting on the blades. A comprehensive treatment on the blade damping phenomenon that occurs in turbines is given. The nonlinear damping models account for material damping and friction damping as a function of rotational speed for each mode. Resonant response calculation procedures for the steadily running as well as accelerating blades are given. Cumulative damage calculations are then outlined for fatigue life estimation of turbomachine blades. The book also deals with heat transfer analysis and thermal stress calculations which help in a comprehensive understanding of the blade problems." [Back cover]
Turbomachines --- Vibrations. --- Vibration.
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In a revised edition of his original book, J. S. Grewal brings the history of the Sikhs from its beginnings in the time of Guru Nanak, the founder of Sikhism, right up to the present day. Against the background of the history of the Punjab, the volume surveys the changing pattern of human settlements in the region until the fifteenth century and the emergence of the Punjabi language as the basis of regional articulation. Subsequent chapters explore the life and beliefs of Guru Nanak, the development of his ideas by his successors and the growth of his following. The book offers a comprehensive statement on one of the largest and most important communities in India today.
Sikhs --- History. --- Punjab (India)
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