Results 71 to 80 of about 1,885,987 (306)

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Bio‐based tannin‐loaded layered double hydroxides in epoxy coatings for smart corrosion protection of steel in underground infrastructure

Deep Underground Science and Engineering, EarlyView.
This study presents a sustainable smart‐coating strategy for protecting underground steel infrastructures from chloride‐induced corrosion. Zinc‐aluminum layered double hydroxides (LDHs) and tannin‐loaded LDHs (LDH–TA) were incorporated into an epoxy matrix to provide both enhanced barrier properties and active, pH‐responsive inhibition.
Veerle Vandeginste, Xinyu Guo, Dawid Kasprzak, Yukun Ji   +3 more
wiley   +1 more source

Comprehensive characterization of humic-like substances in smoke PM_2.5 emitted from the combustion of biomass materials and fossil fuels [PDF]

Atmospheric Chemistry and Physics, 2016
Humic-like substances (HULIS) in smoke fine particulate matter (PM2.5) emitted from the combustion of biomass materials (rice straw, corn straw, and pine branch) and fossil fuels (lignite coal and diesel fuel) were comprehensively studied in this work.
X. Fan, X. Fan, S. Wei, S. Wei, M. Zhu, M. Zhu, J. Song, P. Peng   +7 more
doaj   +1 more source

Molecular Palaeontology Prospects From Exceptionally Preserved Eocene Brackish‐Water Bivalve Batissa sitakaraensis (Venerida: Corbiculidae) From Hokkaido, Japan

Geological Journal, EarlyView.
This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura, Kazuki Hirota, Hiroyuki Kagi, Takashi Matsubara, Takenori Sasaki   +4 more
wiley   +1 more source

Evolution of mechanical properties of organic-rich shale during thermal maturation

Scientific Reports
Accurate assessment of the mechanical properties of organic matter, clay matrix, and bulk shale during maturation remains a challenge. Here, we aim to assess the mechanical properties of organic-rich shale during maturation using a combination of ...
Jianfeng Wang, Dayong Liu, Jianfei Shi, Chao Yang, Yuke Liu, Guozhi Wang, Huijuan Guo, Peng Liu, Yongqiang Xiong, Ping’an Peng   +9 more
doaj   +1 more source

Chromatography-vacuum low temperature method of methane enrichment and isotopic fractionation in gas samples

Shiyou shiyan dizhi
Methane (CH4) clumped isotope analysis plays a crucial role in the fields of climate change, energy exploration, and planetary research. The purity of CH4 in samples directly affects the precision and accuracy of high-resolution mass spectrometry in ...
Qingmei LIU, Jiacheng LI, Wenmin JIANG, Yongqiang XIONG   +3 more
doaj   +1 more source

Polycyclic aromatic hydrocarbons (PAHs) in Chinese forest soils: profile composition, spatial variations and source apportionment

Scientific Reports, 2017
Previous studies reported that forest ecosystems can play a vital role in scavenging anthropogenic polycyclic aromatic hydrocarbons (PAHs) and act as primary reservoirs of these environmental pollutants.
Jabir Hussain Syed, Mehreen Iqbal, Guangcai Zhong, Athanasios Katsoyiannis, Ishwar Chandra Yadav, Jun Li, Gan Zhang   +6 more
doaj   +1 more source

A theoretical model on the formation mechanism and kinetics of highly toxic air pollutants from halogenated formaldehydes reacted with halogen atoms [PDF]

Atmospheric Chemistry and Physics, 2013
The atmospheric reactions of halogenated formaldehydes with halogen atoms were investigated by high-accuracy molecular orbital calculation. Our studies showed that compared to X-addition pathway, the H-abstraction pathway was demonstrated to be more ...
Y. M. Ji, H. H. Wang, Y. P. Gao, G. Y. Li, T. C. An   +4 more
doaj   +1 more source

Constraints on the use of long-chain diols as environmental proxies [PDF]

, 2019
In order to better predict future climate change, we need knowledge on past oceanic and atmospheric responses to climate perturbations comparable to the current anthropogenic release of greenhouse gases. Accordingly, we rely on so-called climate archives
Organic geochemistry & molecular biogeology, de Bar, M., Organic geochemistry, de Bar, Marijke Wilhelmina   +3 more
core  

Warming, euxinia and sea level rise during the Paleocene–Eocene Thermal Maximum on the Gulf Coastal Plain: implications for ocean oxygenation and nutrient cycling [PDF]

, 2014
The Paleocene–Eocene Thermal Maximum(PETM, ?56 Ma) was a ?200 kyr episode of globalwarming, associated with massive injections of 13C-depletedcarbon into the ocean–atmosphere system.
van Roij, L., General geochemistry, Organic geochemistry & molecular biogeology, Stratigraphy & paleontology, Sluijs, A., Geochemistry, Slomp, C.P., Schouten, S., Dep Aardwetenschappen, Organic geochemistry, Marine Palynology, Reichart, G.-J., Marine palynology and palaeoceanography, Stratigraphy and paleontology, Sessa, J.A., LeVay, L.J., Harrington, G.J.   +16 more
core   +2 more sources