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Fuxin Zheng, Yanguo Teng, Yuanzheng Zhai, Jingdan Hu, Junfeng Dou and Rui Zuo
Since the 1990s, sandstone-type uranium in the northern basin of China has become the main target for mining. Uranium mining can cause a series of impacts on the environment. A conceptual model of the geo-environment for sandstone-type uranium in norther...
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Wei Chen, Dalu Zhang, Enlei Wang, Feng Yan, Lin Xiang and Zhiwen Xie
Detailed tests and characterizations were used to investigate the corrosion degradation behaviors of Ti6Al4V alloys in simulated marine environments. These alloys suffered from very slight pitting and a miniscule weight loss of 0.018 mg/cm2 during the 50...
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Ping Wang, Xin Chen, Gang Zeng, Zhiwei Dong, Shiyu Liu, Xianwei Zhang and Ce Wang
The performance of stabilization/solidification(S/S) monoliths is vital for the long-term effectiveness of potentially toxic-element-contaminated soil treatments, which arevulnerable to environmental conditions (e.g., strongly acidic or alkaline conditio...
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Manasa Hegde, Yvonne Kavanagh, Brendan Duffy and Edmond F. Tobin
AA2024-T3 are widely used in various applications because of their exceptional physical properties. However, they are susceptible to corrosion and cavitation erosion in aggressive environments due to high concentration of copper. Sol-gel coatings in the ...
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Ailiang Gu and Christopher John Eastoe
Cenozoic evaporites (gypsum and anhydrite) in southwestern North America have wide ranges of d34S (-30 to +22?; most +4 to +10?) and d18OSO4 (+3 to +19?). New data are presented for five basins in southern Arizona. The evaporites were deposited in playas...
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Songtao Yu, Hongwei Deng, Guanglin Tian and Junren Deng
Microscopic characteristics greatly affect mechanical and physical properties as they exert vital impact on the stability and durability of materials. In this paper, widely distributed sandstone was chosen as the research object. Sandstone was treated wi...
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Ana Roig-Vanaclocha, María Fernanda Solá-Ruiz, Juan Luis Román-Rodríguez, José Amengual-Lorenzo, Jorge Alonso Pérez-Barquero and Rubén Agustín-Panadero
The prevalence of white spots on teeth has increased in recent years. Regardless of their etiology, these lesions are characterized by a reduction in the enamel?s mineral phase, which is replaced by organic fluids. This causes an alteration of its chemic...
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Virinder Sidhu, Dibyendu Sarkar and Rupali Datta
Copper mining in the Upper Peninsula of Michigan in the mid-19th century generated millions of tons of mining waste, called stamp sand, which was deposited into various offshoots of Lake Superior. The toxic stamp sand converted the area into barren, fall...
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Marcia C. Dias-Moraes, Cassio A. Lima, Anderson Z. Freitas, Ana Cecilia C. Aranha and Denise M. Zezell
The present study evaluated the protective effects that are induced by fluoride and Nd:YAG laser irradiation to control dentine erosion. One hundred and twenty bovine dentine slabs were eroded with citric acid twice a day for a total period of 15 days. A...
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K.D. Ritchey, L.D. Norton, A. Hass, J.M. Gonzalez, and D.J. Snuffer
Pág. 264 - 274
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