نتایج جستجو برای: buoyancy

تعداد نتایج: 5040  

ژورنال: مهندسی دریا 2016

In this study, patterns of water current, sea surface temperature and salinity distributions over the South Caspian Sea (SCS) have been investigated using ROMS model. Appling the most accurate bathymetry data and forces with temporal resolution of 3-6 hours, and spatial resolution of 0.125 deg is a characteristic of the simulations used in this study. Results show that there is a barotropic ant...

Abstract Introduction: Students’ perceptions of their educational environment play a very crucial role in the learning process, academic buoyancy and performance. This study aimed to investigate health sciences students’ perceptions of the educational environment and evaluate the predictability of academic buoyancy through their perceptions of the educational environment. Methods: This research...

Journal: :J. Semantics 2000
Bart Geurts

The chief characteristic of presuppositions is that they tend to take wide scope, yet most theories of presupposition, the author's not excepted, fail to provide an explanation of this fact. Recently, however, it has been suggested that a principled explanation can be given in terms of informativeness: the idea is that presuppositions simply prefer stronger readings to weaker ones. This proposa...

Journal: :journal of computational applied mechanics 0
mathew moore mechanical engineering department, university of alberta, canada alidad amirfazli mechanical engineering department, york university, canada seyed farshid chini mechanical engineering department, university of tehran

evaporation of micro-liter drops from solid surfaces at room condition is mainly governed by diffusion. therefore, there should be no difference between evaporation rate of sessile and pendant drops. however, some studies indicate a difference and explain the difference using buoyancy. the objective here is to reconcile the inconsistency in the literature. for that, first, by comparing two iden...

1999
Joanne M. Holford P. F. Linden

The strength of diapycnal mixing by small-scale motions in a stratified fluid is investigated through changes to the mean buoyancy profile. We study the mixing in laboratory experiments in which an initially linearly stratified fluid is stirred with a rake of vertical bars. The flow evolution Ž . depends on the Richardson number Ri , defined as the ratio of buoyancy forces to inertial forces. A...

2004

habitat: a vertical wall of coral reef, in theory, may be able to sustain more divers than a flatter reef, prone to abrasion by divers with buoyancy problems. In addition, a site’s carrying capacity can increase or decrease with visitors’ level of experience and education. Again, the diver with buoyancy problems has a greater impact on habitat than the diver with good buoyancy control. If a par...

2010
Timothée R. Cook Akiko Kato Hideji Tanaka Yan Ropert-Coudert Charles-André Bost

BACKGROUND Because they have air stored in many body compartments, diving seabirds are expected to exhibit efficient behavioural strategies for reducing costs related to buoyancy control. We study the underwater locomotor activity of a deep-diving species from the Cormorant family (Kerguelen shag) and report locomotor adjustments to the change of buoyancy with depth. METHODOLOGY/PRINCIPAL FIN...

Journal: :The Journal of experimental biology 2004
Patrick J O Miller Mark P Johnson Peter L Tyack Eugene A Terray

Drag and buoyancy are two primary external forces acting on diving marine mammals. The strength of these forces modulates the energetic cost of movement and may influence swimming style (gait). Here we use a high-resolution digital tag to record depth, 3-D orientation, and sounds heard and produced by 23 deep-diving sperm whales in the Ligurian Sea and Gulf of Mexico. Periods of active thrustin...

2004
Allen Kuo R. Alan Plumb John Marshall

The equilibrium of a modeled windand buoyancy-driven, baroclinically unstable, ‡ow is analyzed using the transformed Eulerian-mean (TEM) approach described in Part I. Within the near-adiabatic interior of the ‡ow, Ertel potential vorticity is homogenized along mean isopycnals, a …nding readily explained using TEM theory, given the geometry of the domain. The equilibrium, zonal-mean buoyancy str...

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