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Author: Dotty Holcomb Doherty Publisher: ISBN: 9781734886658 Category : Languages : en Pages :
Book Description
Author Dotty Holcomb Doherty's quietly heroic tale of two women's voyages through disease and dying, interwoven with voyages upon Chesapeake creeks that offer comfort and grace. Janet, a young mother, had months to live, doctors said in 1989. She and her husband would overcome staggering odds for 20 more years. Author Dotty Holcomb Doherty, afflicted by MS in 2002, became kayak buddy, confidante and biographer to Janet, her account both unsparing and loving. With a naturalist's eye, she frames their struggles with portraits of Chesapeake seasons, rhythms of migration and tide, the charms of water's edge. As their bodies betrayed them, the Bay buoyed them as they buoyed one another.-Tom Horton, Chesapeake Bay-based author and filmmaker.
Author: Dotty Holcomb Doherty Publisher: ISBN: 9781734886658 Category : Languages : en Pages :
Book Description
Author Dotty Holcomb Doherty's quietly heroic tale of two women's voyages through disease and dying, interwoven with voyages upon Chesapeake creeks that offer comfort and grace. Janet, a young mother, had months to live, doctors said in 1989. She and her husband would overcome staggering odds for 20 more years. Author Dotty Holcomb Doherty, afflicted by MS in 2002, became kayak buddy, confidante and biographer to Janet, her account both unsparing and loving. With a naturalist's eye, she frames their struggles with portraits of Chesapeake seasons, rhythms of migration and tide, the charms of water's edge. As their bodies betrayed them, the Bay buoyed them as they buoyed one another.-Tom Horton, Chesapeake Bay-based author and filmmaker.
Author: Tim Ecott Publisher: Grove Press ISBN: 9780802139078 Category : History Languages : en Pages : 380
Book Description
"Neutral Buoyancy is a journey filled with exotic, eccentric human characters competing for space with misunderstood sharks, weeping turtles, smiling dolphins and erotically shaped sea slugs. This unique and inspiring insight into our relationship with the deep will allow even the most timid swimmer to lose themselves underwater."--Jacket.
Author: Erich J. Plate Publisher: Springer Science & Business Media ISBN: 9401150583 Category : Science Languages : en Pages : 493
Book Description
Studies of convection in geophysical flows constitute an advanced and rapidly developing area of research that is relevant to problems of the natural environment. During the last decade, significant progress has been achieved in the field as a result of both experimental studies and numerical modelling. This led to the principal revision of the widely held view on buoyancy-driven turbulent flows comprising an organised mean component with superimposed chaotic turbulence. An intermediate type of motion, represented by coherent structures, has been found to play a key role in geophysical boundary layers and in larger scale atmospheric and hydrospheric circulations driven by buoyant forcing. New aspects of the interaction between convective motions and rotation have recently been discovered and investigated. Extensive experimental data have also been collected on the role of convection in cloud dynamics and microphysics. New theoretical concepts and approaches have been outlined regarding scaling and parameterization of physical processes in buoyancy-driven geophysical flows. The book summarizes interdisciplinary studies of buoyancy effects in different media (atmosphere and hydrosphere) over a wide range of scales (small scale phenomena in unstably stratified and convectively mixed layers to deep convection in the atmosphere and ocean), by different research methods (field measurements, laboratory simulations, numerical modelling), and within a variety of application areas (dispersion of pollutants, weather forecasting, hazardous phenomena associated with buoyant forcing).
Author: Wolfgang Rodi Publisher: Elsevier ISBN: 1483189872 Category : Technology & Engineering Languages : en Pages : 193
Book Description
The Science & Applications of Heat and Mass Transfer: Reports, Reviews, & Computer Programs, Volume 6: Turbulent Buoyant Jets and Plumes focuses on the formation, properties, characteristics, and reactions of turbulent jets and plumes. The selection first offers information on the mechanics of turbulent buoyant jets and plumes and turbulent buoyant jets in shallow fluid layers. Discussions focus on submerged buoyant jets into shallow fluid, horizontal surface or interface jets into shallow layers, fundamental considerations, and turbulent buoyant jets (forced plumes). The manuscript then examines a turbulence model for buoyant flows and its application to vertical buoyant jets, including mathematical model, calculation of vertical buoyant jets, and explanation of velocity and temperature spreading in pure jets and pure plumes. The publication is a dependable reference for scientists and readers interested in turbulent buoyant jets and plumes.
Author: Jerry Lee Anderson Publisher: ISBN: Category : Thermal pollution of rivers, lakes, etc Languages : en Pages : 242
Book Description
"Negatively buoyant jets, or sinking jets, can be observed in many problems of pollutant discharge. Any chemical waste that is heavier than the receiving water into which it is discharged may act as a negatively buoyant jet. In addition, when water is taken from the hypolimnion of a deep lake or reservoir and used as cooling water, the temperature, and consequently, the discharge may behave like a negatively buoyant jet. Two existing jet diffusion models have been utilized to predict the trajectory and dilution of a positively buoyant jet, or a rising jet, and have been modified to account for the sinking effect. Twenty-four experimental investigations were conducted involving different combinations of densimetric Froude number, velocity ratios, and initial angle of discharge. Salt was used as the tracer, yielding a fluid that was denser than the ambient receiving water and facilitated measuring concentration profiles of the jet plume. The coefficient of entrainment, the major mechanism of dilution, was determined as a function of the densimetric Froude number, velocity ratio, and initial angle of discharge. The reducted drag coefficient was chosen as zero for both models since any other value would predict a trajectory whose rise would be less than experimentally observed. For all angles of discharge the entrainment coefficient increased with a decrease in the velocity ratio and with an increase in densimetric Froude number. Additionally, there was a marked decrease in the entrainmnet coefficient with a decrease in the initial angle of discharge."--Page ii.
Author: Milton M. Klein Publisher: ISBN: Category : Atmospheric temperature Languages : en Pages : 48
Book Description
The classic theory of buoyant motion of a free planar heated jet in still air is extended to account for environmental winds from the same direction as the jet, that is, co-flowing winds. The model is applicable for wind and jet velocities up to 100 m/sec, and jet temperatures up to three times the ambient. Calculations are made for initial jet velocities of 5 and 20 m/sec and temperature excesses, relative to ambient temperature, of 0.3 and 1. For light winds relative to the initial jet velocity the vertical velocity and centerline trajectory of the plume rise rapidly with distance from the jet source. This is similar to that found with the classic theory for still air. As the wind speed approaches the initial jet velocity, the rise of the jet plume with distance from the source is much more gradual. For all wind speeds, the axial jet velocity and temperature decrease rapidly with distance from the jet source, until they become almost constant at short distances downstream. A similarity rule is derived which preserves dynamic similarity in scaling from a given system to another system. For low wind speeds the procedure is close to that based on constant Froude number. (Author).
Author: Mr.Paolo Dudine Publisher: International Monetary Fund ISBN: 1475569793 Category : Business & Economics Languages : en Pages : 33
Book Description
In this paper we provide short- and long-run tax buoyancy estimates for 107 countries (distributed between advanced, emerging and low-income) for the period 1980–2014. By means of Fully-Modified OLS and (Pooled) Mean Group estimators, we find that: i) for advanced economies both long-run and short-run buoyancies are not different from one; ii) long run tax buoyancy exceeds one in the case of CIT for advanced economies, PIT and SSC in emerging markets, and TGS for low income countries, iii) in advanced countries (emerging market economies) CIT (CIT and TGS) buoyancy is larger during contractions than during times of economic expansions; iv) both trade openness and human capital increase buoyancy while inflation and output volatility decrease it.
Author: Marc Smith Publisher: Routledge ISBN: 1000081478 Category : Education Languages : en Pages : 170
Book Description
Becoming Buoyant shows teachers how they can help students to bounce back from daily setbacks and challenges. Drawing on the five main principles of academic buoyancy – confidence, coordination, control, composure and commitment – it investigates the evidence base from which the techniques are drawn and offers practical guidance on applying them in the classroom. Emphasising the role played by internal and external factors, as well as wider school and community influences, the book offers practical guidance on: Choosing and pursuing personal goals Overcoming procrastination Recognising and dealing with anxiety How to use motivation, anxiety and stress management as ways to encourage and nurture self-efficacy. Written by an experienced teacher and chartered psychologist, Becoming Buoyant is essential reading for all teachers that want their students to be resilient and flourish in the classroom.
Author: Eric P. Chassignet Publisher: Cambridge University Press ISBN: 1107079993 Category : Science Languages : en Pages : 445
Book Description
Buoyancy is one of the main forces driving flows on our planet, especially in the oceans and atmosphere. These flows range from buoyant coastal currents to dense overflows in the ocean, and from avalanches to volcanic pyroclastic flows on the Earth's surface. This book brings together contributions by leading world scientists to summarize our present theoretical, observational, experimental and modeling understanding of buoyancy-driven flows. Buoyancy-driven currents play a key role in the global ocean circulation and in climate variability through their impact on deep-water formation. Buoyancy-driven currents are also primarily responsible for the redistribution of fresh water throughout the world's oceans. This book is an invaluable resource for advanced students and researchers in oceanography, geophysical fluid dynamics, atmospheric science and the wider Earth sciences who need a state-of-the-art reference on buoyancy-driven flows.
Author: John Stewart Turner Publisher: Cambridge University Press ISBN: 9780521297264 Category : Mathematics Languages : en Pages : 416
Book Description
The phenomena treated in this book all depend on the action of gravity on small density differences in a non-rotating fluid. The author gives a connected account of the various motions which can be driven or influenced by buoyancy forces in a stratified fluid, including internal waves, turbulent shear flows and buoyant convection. This excellent introduction to a rapidly developing field, first published in 1973, can be used as the basis of graduate courses in university departments of meteorology, oceanography and various branches of engineering. This edition is reprinted with corrections, and extra references have been added to allow readers to bring themselves up to date on specific topics. Professor Turner is a physicist with a special interest in laboratory modelling of small-scale geophysical processes. An important feature is the superb illustration of the text with many fine photographs of laboratory experiments and natural phenomena.
Author: Dotty Holcomb Doherty
Author: Dotty Holcomb Doherty
Author: Tim Ecott
Author: Erich J. Plate
Author: Wolfgang Rodi
Author: Jerry Lee Anderson
Author: Milton M. Klein
Author: Mr.Paolo Dudine
Author: Marc Smith
Author: Eric P. Chassignet
Author: John Stewart Turner