Zobrazeno 1 - 10
of 3 071
pro vyhledávání: '"13c nmr spectroscopy"'
Autor:
Ajay Sarawagi, Pratishtha Wadnerkar, Vrundika Keluskar, Narra Sai Ram, Jerald Mahesh Kumar, Anant Bahadur Patel
Publikováno v:
Neuroglia, Vol 5, Iss 3, Pp 306-322 (2024)
Electroconvulsive therapy (ECT) is an effective treatment for severe and drug-resistant depression, yet its mode of action remains poorly understood. This study aimed to evaluate the effects of ECT on neurometabolism using ex vivo 1H-[13C]-NMR spectr
Externí odkaz:
https://doaj.org/article/8508e06c9ffe40e8a152b8c0cd650bf1
Publikováno v:
Mires and Peat, Vol 30, Iss 06, Pp 1-23 (2024)
Drainage associated with land use change in tropical peatlands has increased the rate of decomposition of peat soils and contributed to CO2 emissions. Increased decomposition may result in changes in the composition of the soil organic carbon (SOC).
Externí odkaz:
https://doaj.org/article/43c1f80ce5cb4d159bff83139cccbcf3
Publikováno v:
Agronomy, Vol 14, Iss 5, p 996 (2024)
Post-agrogenic transformation of fallow soils leads to changes in soil carbon content, the molecular composition of humic substances, and rates of organic matter stabilization, which can affect climate change on the planet. In this regard, we analyze
Externí odkaz:
https://doaj.org/article/b098ab0972c3468e9fd9c0e7194e7e8d
Publikováno v:
Geoderma, Vol 439, Iss , Pp 116695- (2023)
Carbon sequestration in Plaggic Anthrosols is most often investigated by bulk soil carbon inventories, without considering the form in which the carbon is stored (e.g., particulate or mineral-associated organic matter (OM), its capacity, or its chemi
Externí odkaz:
https://doaj.org/article/9f108187fb5741d78b453dfe6491b3af
Autor:
Ilfat Z. Rakhmatullin, Sergej V. Efimov, Ekaterina I. Kondratyeva, Lisset Miquel González, Kajum R. Safiullin, Mikhail A. Varfolomeev, Alexander V. Klochkov, Vladimir V. Klochkov
Publikováno v:
Petroleum Research, Vol 7, Iss 4, Pp 495-499 (2022)
Application of high resolution 13C nuclear magnetic resonance (NMR) spectroscopy to characterize Cuba oil and oil-containing rock samples from Cuban basin was demonstrated. The chemical shifts of 13C NMR functional groups for later determination the
Externí odkaz:
https://doaj.org/article/05416275f8fd43f1910b02beecf371dd
Autor:
Xinwei Liu, Qi An, Xiangyun Song, Qaiser Hussain, Liqiang Cui, Chengji Wang, Yan Wang, Dejie Cui
Publikováno v:
Chemical and Biological Technologies in Agriculture, Vol 9, Iss 1, Pp 1-11 (2022)
Abstract Background Organic materials carbon is mainly sequestrated in humin. However, the carbon (C) stability of humin with organic materials amendments in different types of soils is mainly affected by organic materials or soil types as well as th
Externí odkaz:
https://doaj.org/article/38ab2eeda0d34ce4bddcd3a214cbb215
Autor:
Ilfat Z. Rakhmatullin, Sergej V. Efimov, Alexander V. Klochkov, Oleg I. Gnezdilov, Mikhail A. Varfolomeev, Vladimir V. Klochkov
Publikováno v:
Petroleum Research, Vol 7, Iss 2, Pp 269-274 (2022)
Application of high resolution 13C nuclear magnetic resonance (NMR) spectroscopy to characterize crude oil was demonstrated. The chemical shifts of 13C NMR functional groups that determine the composition of the oil sample were determined. Molar frac
Externí odkaz:
https://doaj.org/article/61811526c38845bc89365f51a2c8b50a
Autor:
Yoshikazu Hiraga, Saori Chaki, Yuri Uyama, Ryosuke Hoshide, Takumi Karaki, Daisuke Nagata, Kanji Yoshimoto, Satomi Niwayama
Publikováno v:
Organics, Vol 3, Iss 1, Pp 38-58 (2022)
13C NMR spectroscopic investigations were conducted for various amino acid derivatives and peptides. It was observed that 13C NMR chemical shifts of the carbonyl carbons are correlated with the solvent polarities, but the extent depends on the struct
Externí odkaz:
https://doaj.org/article/39d745be09414ae2afa84a9cfedd502f
Publikováno v:
Journal of Integrative Agriculture, Vol 20, Iss 10, Pp 2758-2771 (2021)
Knowledge of the stability of soil organic C (SOC) is vital for assessing SOC dynamics and cycling in agroecosystems. Studies have documented the regulatory effect of fertilization on SOC stability in bulk soils. However, how fertilization alters org
Externí odkaz:
https://doaj.org/article/5a76de373c14410b89f221ccd3dcfe80