نتایج جستجو برای: gravity stress view

تعداد نتایج: 757293  

2008
Yongge Ma

A 4-dimensional Lorentzian static space-time is equivalent to 3-dimensional Euclidean gravity coupled to a massless Klein-Gordon field. By quantizing canonically the coupling model in the framework of loop quantum gravity, we obtain a quantum theory which actually describes quantized static space-times. The Kinematical Hilbert space is the product of the Hilbert space of gravity with that of im...

Journal: :British journal of sports medicine 1999
D Chapman-Jones M George

Background On a particular Sunday in April every year, the fair city of London is festooned with 30 000 runners, a good proportion of whom are decked out in all sorts of regalia and weird costumes. With the prime intention of bringing attention to themselves to promote their individual charities, many of these put themselves through a fair degree of physical and mental stress in order to comple...

Journal: :Journal of Physics A 2022

We view and provide further evidence for a number of Swampland criteria, including the Weak Gravity Conjecture, Distance Conjecture bounds on finiteness quantum gravity vacua from prism black hole entropy. Furthermore we propose that at least all these statements may be more fundamentally consequence amplitudes.

1994
Bohdan Paczynski

Research briefs: Gravitational Microlensing and the Search for Dark Matter: A Personal View, Bohdan Paczynski . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Laboratory Gravity: The G Mystery and Intrinsic Spin Experiments, Riley Newman . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 LIGO Project update, Stan Whitcomb . . . . . . . . . . . ...

2004
Peter Molnar

[1] Gravity acting on topography creates differential stress, which, for sufficiently high, steep topography, can fracture intact bedrock. If static fatigue governed the time dependence of that fracturing, a feedback should exist between incision of the landscape and fracturing. The timescale for static fatigue decreases exponentially with differential stress. By creating deeper, steeper valley...

Journal: :Classical and Quantum Gravity 2008

Journal: :Journal of Rheology 2021

In order to measure the extensional rheological properties of yield stress fluids, we developed a rheometrical approach based on analysis deformations fluid extrudate flowing downward and breaking in successive elongated drops due gravity. Assuming gradients longitudinal velocity radial planes are negligible, local instantaneous strain rate is deduced from variations filament diameter each cros...

Journal: :Science 2013
Jeffrey C Andrews-Hanna Sami W Asmar James W Head Walter S Kiefer Alexander S Konopliv Frank G Lemoine Isamu Matsuyama Erwan Mazarico Patrick J McGovern H Jay Melosh Gregory A Neumann Francis Nimmo Roger J Phillips David E Smith Sean C Solomon G Jeffrey Taylor Mark A Wieczorek James G Williams Maria T Zuber

The earliest history of the Moon is poorly preserved in the surface geologic record due to the high flux of impactors, but aspects of that history may be preserved in subsurface structures. Application of gravity gradiometry to observations by the Gravity Recovery and Interior Laboratory (GRAIL) mission results in the identification of a population of linear gravity anomalies with lengths of hu...

2007
NIKOLAOS A. BAKAS BRIAN F. FARRELL

Interaction among potential vorticity perturbations and propagating internal gravity waves in a horizontally sheared zonal flow is investigated. In the strong stratification limit, an initial vorticity perturbation weakly excites two propagating gravity waves while the density component of the potential vorticity perturbation is significantly amplified, potentially leading to convective collaps...

Journal: :HERD 2008
Debajyoti Pati Tom E Harvey Paul Barach

OBJECTIVE Examine the relationships between acute stress and alertness of nurse, and duration and content of exterior views from nurse work areas. BACKGROUND Nursing is a stressful job, and the impacts of stress on performance are well documented. Nursing stress, however, has been typically addressed through operational interventions, although the ability of the physical environment to modula...

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