Results 31 to 40 of about 5,715 (297)

Type selection, structural calculation and construction of anchorage in Sichuan bank of Sichuan Kahalo Jinsha River Bridge

open access: yesAdvances in Bridge Engineering, 2023
Sichuan kahalo Jinsha River Bridge is a suspension bridge with a main span of 1030 m, and the anchorages on both sides are gravity anchorages. In order to adapt to special terrain and geological conditions, anchorage of Sichuan bank pioneered the use of ...
Qiyu Tao, Qigang Xu, Li Chen, Rui Gu
doaj   +1 more source

Regional Land Subsidence Analysis in Eastern Beijing Plain by InSAR Time Series and Wavelet Transforms

open access: yesRemote Sensing, 2018
Land subsidence is the disaster phenomenon of environmental geology with regionally surface altitude lowering caused by the natural or man-made factors.
Mingliang Gao   +8 more
doaj   +1 more source

Country Studies: A Team with No Coach? Problems of Composition, Methodology and Development

open access: yesКонтуры глобальных трансформаций: политика, экономика, право, 2022
The article raises and discusses six “provocative” questions about country studies in order to review, once more, its headings, facilities and, above all, its problems.
A. I. Treivish
doaj   +1 more source

Automated collection of single species of microfossils using a deep learning–micromanipulator system

open access: yesProgress in Earth and Planetary Science, 2020
For geochemical analysis such as stable isotope ratio, radiocarbon dating and minor element analysis for a single species of microfossils, a large number of specimens, is required. Collecting specimens one by one under a microscope requires enormous time
Takuya Itaki   +5 more
doaj   +1 more source

Geochemistry of trace and rare earth elements of the productive intrusions in the Kuh-Kapout porphyry copper deposit, Urumieh–Dokhtar magmatic arc [PDF]

open access: yesپترولوژی
IntroductionThe Cenozoic Urumieh-Dokhtar magmatic arc has characteristics similar to those of Andean-type magmatic arcs. Various types of magmatism occurred in this arc including calc-alkaline and K-rich calc-alkaline magmatism and less of them alkaline ...
Alireza Zarasvandi   +5 more
doaj   +1 more source

A COMPARISON OF DIFF ERENT RINSING METHODS UPON SELECTIVE DISSOLUTION OF IRON (OXY)HYDROXIDES IN SOILS/SEDIMENTS

open access: yesRudarsko-geološko-naftni Zbornik, 2017
Iron (oxy)hydroxides play an important role in a variety of disciplines, among others, environmental and exploration geochemistry, mineralogy, geology and soil science.
Marija Čambala   +2 more
doaj   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

open access: yesThe Anatomical Record, EarlyView.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido   +2 more
wiley   +1 more source

Applying a modified conduit flow process to understand conduit-matrix exchange of a karst aquifer

open access: yesChina Geology, 2022
Due to the high heterogeneity and complexity of water flow movement for multiple karst water-bearing mediums, the evaluation, effective development, and utilization of karst water resources are significantly limited.
Liang-jie Zhao   +5 more
doaj  

Identity of Squalius (Actinopterygii, Cyprinidae) from Istra Peninsula in Croatia (Adriatic Sea basin)

open access: yesZooKeys, 2010
A chub of previously ambiguous identity from the Boljunscica and Pazincica rivers (south-eastern Istra Peninsula) was studied and compared with geographically close Squalius squalus, Squalius zrmanja, and Squalius janae recently described from the ...
Primoz Zupančič   +4 more
doaj   +1 more source

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