Výsledky vyhľadávania - "Carbon Isotopes"

α clustering and neutron-skin thickness of carbon isotopes Autor Zhao, Q., Suzuki, Y., He, J., Zhou, B., Kimura, M.

“…The interplay between the formation of neutron skin and α cluster at the dilute surface of neutron-rich nuclei is one of the interesting subjects in the study of neutron-rich nuclei and nuclear clustering…”
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Reconstructing the 800,000-year history of C4 herbs on the Chinese loess plateau using n-alkane carbon isotopes Autor Zhang, Pu, Liu, Weiguo, Yang, Hong

“… of terrestrial ecosystem evolution. In this paper, we determine the carbon isotope and biomass characteristics of leaf wax on the CLP…”
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A microbially driven and depth-explicit soil organic carbon model constrained by carbon isotopes to reduce parameter equifinality Autor Van de Broek, Marijn, Govers, Gerard, Schrumpf, Marion, Six, Johan

“…Over the past years, microbially driven models have been developed to improve simulations of soil organic carbon (SOC) and have been put forward as an…”
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Evaluation of the Residency of Black Rockfish (Sebastes schlegelii) in Artificial Reef Areas Based on Stable Carbon Isotopes Autor Yu, Haolin, Feng, Jie, Zhao, Wei, Zhang, Tao, Wang, Haiyan, Ji, Yunlong, Tang, Yanli, Sun, Liyuan

“…The ecological ‘attraction’ and ‘production’ functions of reef areas have been the subject of ongoing debate requiring further clarification…”
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Genesis of the carboniferous Longtou manganese deposit, central Guangxi, SW China: insights from mineralogy, geochemistry, and carbon isotopes Autor Jia, Zhenzhen, Feng, Kangning, Xu, Hai, Yang, Ruidong, Shi, Chunhua, Tu, Lingling, Jiang, Yuan, Gao, Junbo

“… Moreover, the precipitation mechanisms and mineralization processes of Mn in carbonate rock-hosted deposits remain a subject of ongoing debate…”
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Stories hidden in tree rings: A review on the application of stable carbon isotopes to dendrosciences Autor Shestakova, Tatiana A., Martínez-Sancho, Elisabet

“…During the last 25 years, the dendrochronology community has benefited from the application of stable carbon isotopes in tree rings to answer a number of research questions, which has resulted…”
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Carbon isotopes in the ocean model of the Community Earth System Model (CESM1) Autor Jahn, A., Lindsay, K., Giraud, X., Gruber, N., Otto-Bliesner, B. L., Liu, Z., Brady, E. C.

“…Carbon isotopes in the ocean are frequently used as paleoclimate proxies and as present-day geochemical ocean tracers…”
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Evaluation of the non-climatic (age-related) trends of stable oxygen and carbon isotopes in Swiss stone pine (Pinus cembra L.) tree rings from the Eastern Carpathians, Romania Autor Kern, Zoltan, Nagavciuc, Viorica, Hatvani, István Gábor, Hegyi, István Norbert, Loader, Neil J., Popa, Ionel

“…The presence, magnitude, and duration of age and/or size-related trends in the stable isotopes in tree-ring cellulose time series has been a subject of scientific debate…”
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REE patterns and trustworthiness of stable carbon isotopes of Salitre Formation, Irecê Basin (Neoproterozoic), São Francisco Craton Autor Redivo, Henrique V., Mizusaki, Ana M.P., Santana, Ana V.A.

“…Neoproterozoic limestones have been subject to variations in their original isotopic ratios, which has led to studies to verify the reliability of isotopic data obtained in these rocks…”
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Origin of solid bitumen in the Maokou formation of Huayingshan in eastern Sichuan: insights from biomarkers and carbon isotopes of group compositions Autor Liu, Hao, Shi, Zejin, Tian, Yaming, Tan, Qian, Li, Wenjie, Wang, Yong, Luo, Wei, Ning, Keke, Tang, Shaoyu

“… This research explores the origin of solid bitumen in the Maokou Formation of Huayingshan through biomarker and carbon isotope analysis of 5 solid bitumen samples and 1 source rock sample…”
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The role of metal sulfates in thermochemical sulfate reduction (TSR) of hydrocarbons: Insight from the yields and stable carbon isotopes of gas products Autor Lu, Hong, Greenwood, Paul, Chen, Tengshui, Liu, Jinzhong, Peng, Ping’an

“… (CaSO 4, Na 2SO 4, MgSO 4) in sealed gold tubes at 420 °C and measuring the stable carbon isotope values of hydrocarbon (C 1–C 5…”
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Distribution features of carbon isotopes in carbonates on the example of the Sartiu Formation (Lower Carboniferous, Vorkuta Uplift) Autor Erofeevsky, A. V., Plotitsyn, A. N., Zhuravlev, A. V., Vevel, Ya. A., Ivanova, R. M.

“…Research subject. The carbon and oxygen isotope composition of rock carbonates and brachiopod shells in the section of the upper part of the Sartiu Formation…”
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Systemic availability and metabolism of colonic‐derived short‐chain fatty acids in healthy subjects: a stable isotope study Autor Boets, Eef, Gomand, Sara V., Deroover, Lise, Preston, Tom, Vermeulen, Karen, Preter, Vicky, Hamer, Henrike M., den Mooter, Guy, Vuyst, Luc, Courtin, Christophe M., Annaert, Pieter, Delcour, Jan A., Verbeke, Kristin A.

“…Key points The short‐chain fatty acids (SCFAs) are bacterial metabolites produced during the colonic fermentation of undigested carbohydrates, such as dietary…”
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Authenticity and geographic origin of global honeys determined using carbon isotope ratios and trace elements Autor Zhou, Xiaoteng, Taylor, Mark Patrick, Salouros, Helen, Prasad, Shiva

“… The remaining 69 authentic samples were subject to trace element analysis for geographic determination…”
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Applications of NMR spectroscopy to systems biochemistry Autor Fan, Teresa W.-M., Lane, Andrew N.

“…The past decades of advancements in NMR have made it a very powerful tool for metabolic research. Despite its limitations in sensitivity relative to mass…”
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Imaging of tau pathology in a tauopathy mouse model and in Alzheimer patients compared to normal controls Autor Maruyama, Masahiro, Shimada, Hitoshi, Suhara, Tetsuya, Shinotoh, Hitoshi, Ji, Bin, Maeda, Jun, Zhang, Ming-Rong, Trojanowski, John Q, Lee, Virginia M-Y, Ono, Maiko, Masamoto, Kazuto, Takano, Harumasa, Sahara, Naruhiko, Iwata, Nobuhisa, Okamura, Nobuyuki, Furumoto, Shozo, Kudo, Yukitsuka, Chang, Qing, Saido, Takaomi C, Takashima, Akihiko, Lewis, Jada, Jang, Ming-Kuei, Aoki, Ichio, Ito, Hiroshi, Higuchi, Makoto

“…Accumulation of intracellular tau fibrils has been the focus of research on the mechanisms of neurodegeneration in Alzheimer's disease (AD) and related…”
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Carbon isotopes profiles of human whole blood, plasma, red blood cells, urine and feces for biological/biomedical 14C-accelerator mass spectrometry applications Autor Kim, Seung-Hyun, Chuang, Jennifer C, Kelly, Peter B, Clifford, Andrew J

“…), which result in unique signature. Furthermore, plants and the food chains they support also have unique carbon isotope signatures…”
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The effect of co-ingesting rice and liquid on glycemic response and gastric emptying in healthy subjects Autor Matsunaga, Tetsuro, Adachi, Tetsuya, Yasuda, Koichiro

“…•In healthy young subjects, consumption of rice with liquid (tea) induced a higher postprandial glycemic response, in addition to a higher gastric emptying rate, than eating rice…”
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Metabolic imaging of patients with prostate cancer using hyperpolarized [1-¹³C]pyruvate Autor Nelson, Sarah J, Kurhanewicz, John, Vigneron, Daniel B, Larson, Peder E Z, Harzstark, Andrea L, Ferrone, Marcus, van Criekinge, Mark, Chang, Jose W, Bok, Robert, Park, Ilwoo, Reed, Galen, Carvajal, Lucas, Small, Eric J, Munster, Pamela, Weinberg, Vivian K, Ardenkjaer-Larsen, Jan Henrik, Chen, Albert P, Hurd, Ralph E, Odegardstuen, Liv-Ingrid, Robb, Fraser J, Tropp, James, Murray, Jonathan A

“…This first-in-man imaging study evaluated the safety and feasibility of hyperpolarized [1-¹³C]pyruvate as an agent for noninvasively characterizing alterations…”
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Low turnover rates of carbon isotopes in tissues of two nectar-feeding bat species Autor Voigt, Christian C, Matt, Felix, Michener, Robert, Kunz, Thomas H

“… Because turnover rates of carbon isotopes are related to metabolic rate, we wanted to determine the rates at which carbon isotopes are exchanged in tissues of two species of nectar-feeding bats…”
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