Results 91 to 100 of about 101,603 (299)

Thermal-stress behaviour of RCC gravity dams [PDF]

FME Transactions, 2015
Roller Compacted Concrete (RCC) is a special concrete mixture with low cement content, frequently used for concrete gravity dams. This paper deals with the 3D finite element model for unsteady phased thermal-stress analysis of RCC dams. Model calibration
Kuzmanović Vladan, Savić Ljubodrag, Mladenović Nikola   +2 more
doaj  

Gauge Theory of Gravity Requires Massive Torsion Field [PDF]

, 1998
One of the greatest unsolved issues of the physics of this century is to find a quantum field theory of gravity. According to a vast amount of literature unification of quantum field theory and gravitation requires a gauge theory of gravity which ...
Boulware D. G., Cartan E., Lee B. W., Lee B. W., Lee B. W., Lense J., RAINER W. KÜHNE, Zakharov V. I.   +7 more
core   +2 more sources

Establishment of an MRI‐Based Diagnostic Approach to Identify Critical Pulpal Inflammation Zones in a Rat Caries‐Derived Pulpitis Model

International Endodontic Journal, EarlyView.
ABSTRACT Aim To establish a magnetic resonance imaging (MRI)‐based diagnostic approach for identifying ‘critical pulpal inflammation’ zones in a rat model of caries‐derived pulpitis. Methodology Caries‐derived pulpitis was induced in the molars of Sprague–Dawley rats using the caries‐derived pulpitis model.
Kiichi Moriyama, Motoki Okamoto, Masakatsu Watanabe, Hailing Huang, Koki Nakatani, Shigeyoshi Saito, Yusuke Takahashi, Mikako Hayashi   +7 more
wiley   +1 more source

Seismic Performance Assessment of Gravity Dams for Urban Flood Risk Mitigation Using the Scaled Boundary Finite Element Method (SBFEM)

Hydrology
Rapid urbanization and climate change have intensified urban flood risks, necessitating resilient upstream infrastructure to ensure metropolitan water security and effective flood mitigation. Gravity dams, as critical components of urban flood protection
Min-koan Kim, Dai Xu
doaj   +1 more source

Seismic Damage Analysis of Concrete Gravity Dam Based on Wavelet Transform

Shock and Vibration, 2016
The key to the dam damage assessment is analyzing the remaining seismic carrying capacity after an earthquake occurs. In this paper, taking Koyna concrete gravity dam as the object of study, the dynamic response and damage distribution of the dam are ...
Dunben Sun, Qingwen Ren
doaj   +1 more source

Calculation and Analysis of Temperature Damage of Shimantan Concrete Gravity Dam Based on Macro-Meso Model. [PDF]

Materials (Basel), 2022
Jiao Y, Cheng L, Wang N, Wang S, Ma L.
europepmc   +1 more source

Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer, Christopher L. Kirkland, Hugo Olierook, Tim Johnson, Katy Evans   +4 more
wiley   +1 more source

Evaluation of dynamic responses of concrete gravity dam considering dam-reservoir-foundation interaction with inclined absorptive reservoir bottom

Journal of Materials and Engineering Structures
The present paper shows the dynamic responses of concrete gravity dam considering inclined reservoir bed. Responses of gravity dam influenced by the adjacent reservoir and soil foundation.
Santosh Kumar DAS, Kalyan Kumar MANDAL, Arup Guha NEYOGI   +2 more
doaj  

Between Dispossession and Inclusion: Land Injustice and Project‐Based Citizenship in the Bagré Irrigation Scheme (Burkina Faso)

Journal of Agrarian Change, EarlyView.
ABSTRACT Large‐scale irrigation schemes are central to agrarian transformation in sub‐Saharan Africa, yet their political implications are often reduced to questions of land redistribution or agrarian differentiation. Although existing scholarship has documented how irrigation restructures agrarian relations and generates dispossession, less attention ...
William's Daré
wiley   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source