Results 51 to 60 of about 101,603 (299)
Uncertainty in Measurements of Distance [PDF]
, 2002 Ng and van Dam have argued that quantum theory and general relativity give a lower bound of L^{1/3} L_P^{2/3} on the uncertainty of any distance, where L is the distance to be measured and L_P is the Planck length.
John C Baez +3 more
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Advanced Functional Materials for Marine Energy Utilization
Interdisciplinary Materials, EarlyView.Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu +7 more
wiley +1 more source
Analysis of Anti-seepage Effect of Masonry Gravity Dam Repaired by Geomembrane
Renmin Zhujiang, 2021 In view of the seepage of the dam body and dam foundation of a dangerous masonry gravity dam,this paper puts forward the seepage repair scheme of laying geomembrane on the dam surface and strengthening the curtain of the dam foundation,calculates the ...
WANG Libo, CEN Weijun, ZHENG Changhai
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The use of FLAC for the seismic evaluation of a concrete gravity dam including dam-water-sediments-foundation rock interaction [PDF]
, 2017 Seismic safety of 65m-high Licodia Eubea gravity dam located in Southeastern Sicily (Italy) has been assessed by means of advanced dynamic analyses of the tallest cross-section of the dam. The analyses were performed with two-dimensional, plane strain,
Lanzo, Giuseppe +3 more
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The quantization of unimodular gravity and the cosmological constant problem
, 2009 A quantization of unimodular gravity is described, which results in a quantum effective action which is also unimodular, ie a function of a metric with fixed determinant.
A. Zee, Lee Smolin
core +1 more source
Lifetime evaluation of concrete structures under sustained post-peak loading [PDF]
, 2005 Experimental tests on crack propagation in concrete under constant post-peak loading are simulated using the finite element method and the cohesive crack model, in both Mode I and Mixed-mode conditions.
Barpi, Fabrizio, Valente, Silvio
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The Non‐Professional Virtues of the Hospice Volunteer
Journal of Applied Philosophy, EarlyView.ABSTRACT Volunteers have long played a significant role in hospice care. Much of the care volunteers provide consists of weekly hour‐long in‐home visits. Home‐visiting hospice volunteers are not professionals, nor are they strangers or intimates. Hospice volunteers will not typically face moral dilemmas, nor be called upon to make dramatic decisions ...
Michael B. Gill
wiley +1 more source
Nordic Journal of Botany, EarlyView.The Irano‐Turanian Floristic Region harbors a rich flora, but our understanding of the development of this diversity is limited by a lack of data on phylogenetic relationships and biogeographic patterns of endemic and more widespread plants. Hypotheses of in situ diversification versus allopatric diversification were tested using Iris subgen. Scorpiris,
Mona Salimbahrami +4 more
wiley +1 more source
Seismic stability safety evaluation of gravity dam with shear strength reduction method
Water Science and Engineering, 2009 A new method of numerical seismic stability safety evaluation for a rock slope is proposed based on the analysis of a gravity dam foundation subjected to earthquake loading.
Da-sheng Wang +4 more
doaj +1 more source
Higher Spins and Current Exchanges [PDF]
, 2009 The simplest higher-spin interactions involve classical external currents and symmetric tensors $\phi_{\m_1 ... \m_s}$, and convey three instructive lessons. The first is a general form of the van Dam-Veltman-Zakharov discontinuity in flat space for this
Sagnotti, A.
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