Results 91 to 100 of about 151,142 (279)
Archaeometry, EarlyView.ABSTRACT Twelve metal artifacts from recent excavations at the Sasanian archaeological site of Jahāngir in western Iran have been analyzed. These items include both decorative and utilitarian artifacts. The samples were examined using micro‐X‐ray fluorescence (μ‐XRF), scanning electron microscopy with energy‐dispersive X‐ray spectroscopy (SEM‐EDS), and
Omid Oudbashi +2 more
wiley +1 more source
Key Technologies in the Design and Construction of 300 m Ultra-High Arch Dams
Engineering, 2016 Starting with the Ertan arch dam (240 m high, 3300 MW) in 2000, China successfully built a total of seven ultra-high arch dams over 200 m tall by the end of 2014. Among these, the Jinping I (305 m), Xiaowan (294.5 m), and Xiluodu (285.5 m) arch dams have
Renkun Wang
doaj +1 more source
Study on the freeze-thaw effect on concrete arch dam using an improved response surface method. [PDF]
Sci Rep, 2023 Cai Q, Yang M, Yang J.
europepmc +1 more source
Temperature field forecast in concrete dam with the use of ARIMA models and the finite element method [PDF]
, 2016 This article describes a forecasting method, with the application of statistical models Auto-Regressive Integrated Moving Average (ARIMA) and a heat conduction model to forecast the temperature field in a buttress block of Itaipu dam. Monthly temperature
Aracayo, Luis Antonio Sucapuca +6 more
core
Boreas, EarlyView.This study examines the distribution and morphology of lakes under the Laurentide Ice Sheet (LIS) to investigate relationships with ice flow velocity, bedrock and basal thermal regime. Palaeo‐ice streams and lobes were important components of the LIS, and properties of lakes in those regions are quantified at high resolution.
Sarah M. Principato, Carissa M. Mobley
wiley +1 more source
Structural Analysis of Huaguangtan Arch Dam Based on Data Assimilation Parametric Inversion
Renmin Zhujiang, 2023 Aiming at the difficulty of the accurate safety assessment of the overall structural state of Huaguangtan Arch Dam,a finite element model of the arch dam is established,and the data assimilation algorithm is used to invert the material parameters based ...
LIN Xianzhi +5 more
doaj
Assessment of Road Crossings for Improving Migratory Fish Passage in the Winnicut River Watershed [PDF]
, 2009 This report summarizes the results of a river continuity assessment focused on roadstream crossings. The Winnicut River is the site of a restoration project that removed a head-of-tide dam and resulted in the only free-flowing major tributary to the ...
The Nature Conservancy
core +1 more source
Boreas, EarlyView.We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest +10 more
wiley +1 more source
Zoning Elastic Modulus Inversion for High Arch Dams Based on the PSOGSA-SVM Method
Advances in Civil Engineering, 2019 Real-time monitoring of the actual elastic modulus is essential and necessary to ensure the safe operation of arch dams. The zoning elastic modulus of a high arch dam is inversed by using deformation safety monitoring data in the operation period, based ...
Bo Chen +5 more
doaj +1 more source
Thermal and structural analysis of RCC double-curvature arch dam
Journal of Civil Engineering and Management, 2014 This paper focuses on the development, verification and application of a three-dimensional finite element code for coupled thermal and structural analysis of roller compacted concrete arch dams.
Aeid Ali Abdulrazeg +4 more
doaj +1 more source