Results 71 to 80 of about 107,558 (336)

Impact of Sugarcane Management Practices and Time Periods on Soil Organic Carbon and δ13C Signature After Paddy Rice Conversion

Land Degradation &Development, EarlyView.
ABSTRACT Land use change (LUC) from paddy rice to sugarcane cultivation strongly influences soil organic carbon (SOC) stocks, with the extent and direction of change depending on residue management and time since conversion. This study aimed to (i) evaluate SOC stock changes under different residue management practices and conversion periods following ...
Nipon Mawan, Nuttapon Khongdee, Chunling Luo, Wanwisa Pansak   +3 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

Comparing non‐staining methods with Mutvei's solution to visualize growth increments in short‐lived intertidal marine gastropod shells

Limnology and Oceanography: Methods, EarlyView.
Abstract Mutvei's solution is a widely utilized standard staining method for revealing growth increments in biogenic carbonates; however, it is a slightly toxic, destructive approach with varying success across species groups. Therefore, there has been growing interest in finding non‐toxic, less destructive, and straightforward alternative techniques ...
Mahsa Alidoostsalimi, Amy L. Prendergast, Sean Ulm, Ariana B. J. Lambrides, Ian J. McNiven, Russell N. Drysdale, Nguurruumungu Indigenous Corporation, Walmbaar Aboriginal Corporation RNTBC   +7 more
wiley   +1 more source

National Soils Database [PDF]

, 2007
End of project reportThe objectives of the National Soils Database project were fourfold. The first was to generate a national database of soil geochemistry to complete the work that commenced with a survey of the South East of Ireland carried out in ...
Carrigg, Cora, Carton, Owen T., Fay, Deirdre, Grennan, Eamonn J., Kramers, Gaelene, McGrath, David, O'Flaherty, Vincent, Zhang, Chaosheng   +7 more
core  

Influence of production variables and starting material on charcoal stable isotopic and molecular characteristics [PDF]

, 2008
We present a systematic study on the effect of starting species, gas composition, temperature, particle size and duration of heating upon the molecular and stable isotope composition of high density (mangrove) and low density (pine) wood.
Alemany, Antal, Antal, Atalla, Baldock, Benner, Beramendi-Orosco, Bird, Blann, C.E. Snape, Cachier, Carcaillet, Chaloner, Clark, Czimczik, Czimczik, D. Apperley, Earl, Eckmeier, Ehrlinger, Ehrlinger, Evans, Fengel, Ferrio, Gavin, Gleixner, Goebel, Hakkou, Hall, Hatcher, Inari, Irbe, Jones, Knicker, Kringstad, Krull, Labbé, Leavitt, Levine, Li, Loader, M.I. Bird, Marino, Martinez, Maunu, McCarroll, Mok, Mörck, Nogueira, Novakov, P. Wormald, P.L. Ascough, Pandey, Pessenda, Poole, Qian, Richard, Robertson, Sima-Ella, Simpson, Sivonen, Sjöström, Skjemstad, Skjemstad, Soares, Steinbeiss, Swift, Turekian, Turney, Verheyden, Völker, Werts, Wikberg, Williams, Wilson, Wormald, Xiao   +76 more
core   +1 more source

Cold EI—The Way to Improve GC‐MS and Increase Its Range of Applications

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Gas chromatography‐mass spectrometry (GC‐MS) with Cold electron ionization (EI) is based on interfacing the GC and MS with a supersonic molecular beam (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB in a contact‐free fly‐through ion source (hence the name Cold EI).
Aviv Amirav, Benny Neumark, Oneg Elkabets, Alex Yakovchuk   +3 more
wiley   +1 more source

Ordovician and Silurian Formations of the Baltic Syneclise (NE Poland): An Organic Geochemistry Approach [PDF]

, 2022
Paweł Kosakowski, Adam Zakrzewski, Marta Waliczek   +2 more
openalex   +1 more source

Cryostratigraphy of Rhythmic Segregated Ice in Colluvium and Implications for Permafrost Slope Stability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The amount and stratigraphic setting of ground ice in permafrost slopes is a key control on the style and magnitude of permafrost mass wasting. Understanding the spatial and stratigraphic variations in ground ice distribution on permafrost slopes is therefore a fundamental property in assessing the stability of permafrost hillslopes.
Joseph M. Young, Alejandro Alvarez, Duane Froese   +2 more
wiley   +1 more source