Results 41 to 50 of about 5,752,310 (307)

Chemical weathering records in Yungang Formation, North China: implications for stone heritage conservation

Frontiers in Earth Science
The Yungang Grottoes located in Datong area, North China, have experienced extensive surface and structural damage. Previous studies have recognized the importance of temperature and water during weathering, but the quantitative evaluation on both the ...
Xin Huang, Xin Huang, Feng Guo, Feng Guo, Feng Guo, Liang Zhao, Liang Zhao, Feng Zhang, Feng Zhang   +8 more
doaj   +1 more source

Quantifying weathering intensity using chemical proxies: a weathering index AFB

, 2022
Chemical weathering indices (CWIs) based on bulk chemical rock composition can potentially provide an objective tool for estimation of weathering intensity and classification of weathering products.
N. Sergeev (14112075)
core   +1 more source

Prediction of Glass Chemical Composition and Type Identification Based on Machine Learning Algorithms

Applied Sciences
Ancient glass artifacts were susceptible to weathering from the environment, causing changes in their chemical composition, which pose significant obstacles to the identification of glass products.
Ziwei Chen, Yang Xu, Chao Zhang, Min Tang   +3 more
doaj   +1 more source

Elemental data for Gonghai Lake sediments show significant effects of human activities on weathering processes after 1550 CE

Frontiers in Earth Science, 2023
The international Anthropocene Working Group has recognized the mid-20th centrury (ca. 1950 CE) as the onset of the Anthropocene, but human activities in China altered the land cover and influenced weathering processes much earlier.
Hong Jiang, Hong Jiang, Hong Jiang, Yongming Han, Yongming Han, Yongming Han, Yongming Han, Yalan Tang, Yalan Tang, Yalan Tang, Huimin Fan, Bo Liu, Richard Arimoto   +12 more
doaj   +1 more source

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Smith, C.L., M. E. Hodson, Lee, M.R., Smith, C. L., C. L. Smith, Hodson, M.E., M. Mackenzie, MacKenzie, M., D. J. Brown, Lee, M. R., Brown, D. J., Hodson, M. E., Brown, D.J., M. R. Lee   +13 more
core   +1 more source

An Adaptive Inhibitory WSe2 Transistor for Retinomorphic In‐Sensor Image Processing

Advanced Functional Materials, EarlyView.
Conventional retinomorphic devices typically require deliberate gate‐bias tuning for each illumination condition. In this paper, we demonstrate an adaptive inhibitory WSe2 transistor that uses photo‐induced regime shift between the subthreshold and accumulation modes to achieve decision‐free, intensity‐adaptive image processing within a single pixel ...
Juhwan Baek, Junhwa Oh, Hyeonjung Kim, Minsik Park, Haein Cho, Jin Young Park, Hyeonchang Son, Taeyun Kim, Sung‐Un An, Yamin Zhang, Hyeon‐Jin Shin, Seyong Oh, Dong‐Ho Kang   +12 more
wiley   +1 more source

Adaptation of the Minerals Management Service's Oil Weathering Model for Use in the Gulf of Mexico Region [PDF]

, 1992
Summary describing the work completed at Chemical & Process Engineering Associates for "Adaptation of the Minerals Management Service's Oil Weathering Model".
Chemical & Process Engineering Associates
core   +2 more sources

Correlated Charge Transport in an Organic Coulomb Glass

Advanced Materials, EarlyView.
ABSTRACT Advances in the development of organic field‐effect transistors (OFETs), electrically gated organic semiconductors (EGOFETs), and organic electrochemical transistors (OECTs) allow for the operation of these devices at very high charge‐carrier densities, where Coulomb interactions between carriers can be expected to become significant.
Magdalena Sophie Dörfler, Heinz Bässler, Harald Oberhofer, Anna Köhler   +3 more
wiley   +1 more source

Topographic and Climatic Control on Chemical Weathering of Mountainous Riverine Sediments of Hainan Island, South China Sea

Frontiers in Earth Science, 2022
Hainan Island, the largest island in the northwestern South China Sea (SCS), is characterized by many tropical mountainous rivers that flow into the SCS.
Fangjian Xu, Fangjian Xu, Bangqi Hu, Bangqi Hu, Jingtao Zhao, Xiting Liu, Ruyong Cui, Xue Ding, Xue Ding, Guifeng Wang, Jianping Huang   +10 more
doaj   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source