Sources and transformation processes of pheopigments : Stable carbon and hydrogen isotopic evidence from Lake Haruna, JapanCHIKARAISHI, Yoshito; MATSUMOTO, Kohei; KITAZATO, Hiroshi et al.Organic geochemistry. 2007, Vol 38, Num 6, pp 985-1001, issn 0146-6380, 17 p.Article

Radiocarbon dating of individual fatty acids as a tool for refining Antarctic margin sediment chronologies = Datation radiocarbone d'acide gras individuel en tant qu'outil pour afiner les chronologies des sédiments côtiers de l'AntartiqueOHKOUCHI, Naohiko; EGLINTON, Timothy I; HAYES, John M et al.Radiocarbon. 2003, Vol 45, Num 1, pp 17-24, issn 0033-8222, 8 p.Article

An improved method for isolation and purification of sedimentary porphyrins by high-performance liquid chromatography for compound-specific isotopic analysisKASHIYAMA, Yuichiro; KITAZATO, Hiroshi; OHKOUCHI, Naohiko et al.Journal of chromatography. 2007, Vol 1138, Num 1-2, pp 73-83, issn 0021-9673, 11 p.Article

Copper-chelated bacteriochlorophyll e homologues in sediment from an anoxic lake (Lake Abashiri, Japan)OHKOUCHI, Naohiko; NAKAJIMA, Yoji; OKADA, Hisatake et al.Organic geochemistry. 2005, Vol 36, Num 11, pp 1576-1580, issn 0146-6380, 5 p.Article

A preliminary estimate of the trophic position of the deep-water ram's horn squid Spirula spirula based on the nitrogen isotopic composition of amino acidsOHKOUCHI, Naohiko; TSUDA, Ryuichi; CHIKARAISHI, Yoshito et al.Marine biology (Berlin). 2013, Vol 160, Num 4, pp 773-779, issn 0025-3162, 7 p.Article

Fractionation of hydrogen isotopes during phytol biosynthesisCHIKARAISHI, Yoshito; TANAKA, Ryouichi; TANAKA, Ayumi et al.Organic geochemistry. 2009, Vol 40, Num 5, pp 569-573, issn 0146-6380, 5 p.Article

Evaluation of carnivory in inland Jomon hunter―gatherers based on nitrogen isotopic compositions of individual amino acids in bone collagen = Évaluation du carnivorisme des chasseurs-cueilleurs Jomons à l'intérieur de terres, à partir des compositions isotopiques en azote des acides aminés individuels dans le collagène osseuxNAITO, Yuichi I; CHIKARAISHI, Yoshito; OHKOUCHI, Naohiko et al.Journal of archaeological science. 2013, Vol 40, Num 7, pp 2913-2923, issn 0305-4403, 11 p.Article

Compound-Specific Nitrogen Isotope Analysis of D-Alanine, L-Alanine, and Valine : Application of Diastereomer Separation to δ¹⁵N and Microbial Peptidoglycan StudiesTAKANO, Yoshinori; CHIKARAISHI, Yoshito; OGAWA, Nanako O et al.Analytical chemistry (Washington). 2009, Vol 81, Num 1, pp 394-399, issn 0003-2700, 6 p.Article

Detection of coenzyme F430 in deep sea sediments: A key molecule for biological methanogenesisTAKANO, Yoshinori; KANEKO, Masanori; KAHNT, Jörg et al.Organic geochemistry. 2013, Vol 58, pp 137-140, issn 0146-6380, 4 p.Article

Geographical origin of polished rice based on multiple element and stable isotope analysesSUZUKI, Yaeko; CHIKARAISHI, Yoshito; OGAWA, Nanako O et al.Food chemistry. 2008, Vol 109, Num 2, pp 470-475, issn 0308-8146, 6 p.Article

Hydrogen, carbon and nitrogen isotopic fractionations during chlorophyll biosynthesis in C3 higher plantsCHIKARAISHI, Yoshito; MATSUMOTO, Kohei; OGAWA, Nanako O et al.Phytochemistry. 2005, Vol 66, Num 8, pp 911-920, issn 0031-9422, 10 p.Article

Radiocarbon dating of alkenones from marine sediments: I. isolation protocolOHKOUCHI, Naohiko; LI XU; REDDY, Christopher M et al.Radiocarbon. 2005, Vol 47, Num 3, pp 401-412, issn 0033-8222, 12 p.Article

Nitrogen isotopic composition of collagen amino acids as an indicator of aquatic resource consumption: insights from Mesolithic and Epipalaeolithic archaeological sites in France = La composition isotopique de l'azote des acides aminés du collagène comme indicateur de la consommation de ressources aquatiques: un aperçu avec des sites archéologiques mésolithiques et épipaléolithiques françaisNAITO, Yuichi I; CHIKARAISHI, Yoshito; OHKOUCHI, Naohiko et al.World archaeology. 2013, Vol 45, Num 3, pp 338-359, issn 0043-8243, 22 p.Article

Quantitative Evaluation of Marine Protein Contribution in Ancient Diets Based on Nitrogen Isotope Ratios of Individual Amino Acids in Bone Collagen: An Investigation at the Kitakogane Jomon SiteNAITO, Yuichi I; HONCH, Noah V; CHIKARAISHI, Yoshito et al.American journal of physical anthropology. 2010, Vol 143, Num 1, pp 31-40, issn 0002-9483, 10 p.Article

Radiocarbon dating of alkenones from marine sediments: III. Influence of solvent extraction procedures on ¹⁴C measurements of foraminiferaOHKOUCHI, Naohiko; EGLINTON, Timothy I; HUGHEN, Konrad A et al.Radiocarbon. 2005, Vol 47, Num 3, pp 425-432, issn 0033-8222, 8 p.Article

Temperature effect on leaf water deuterium enrichment and isotopic fractionation during leaf lipid biosynthesis: Results from controlled growth of C₃ and C₄ land plantsYOUPING ZHOU; GRICE, Kliti; CHIKARAISHI, Yoshito et al.Phytochemistry. 2011, Vol 72, Num 2-3, pp 207-213, issn 0031-9422, 7 p.Article

Fluctuations of nitrogen isotope ratio of gobiid fish (Isaza) specimens and sediments in Lake Biwa, Japan, during the 20th centuryOGAWA, Nanako O; KOITABASHI, Tadatoshi; ODA, Hirotaka et al.Limnology and oceanography. 2001, Vol 46, Num 5, pp 1228-1236, issn 0024-3590Article

A compound-specific isotope method for measuring the stable nitrogen isotopic composition of tetrapyrrolesCHIKARAISHI, Yoshito; KASHIYAMA, Yuichiro; OGAWA, Nanako O et al.Organic geochemistry. 2008, Vol 39, Num 5, pp 510-520, issn 0146-6380, 11 p.Article

Holocene lake development and glacial-isostatic uplift at Lake Skallen and Lake Oyako, Lützow-Holm Bay, East Antarctica: Based on biogeochemical facies and molecular signaturesTAKANO, Yoshinori; TYLER, Jonathan James; KOJIMA, Hisaya et al.Applied geochemistry. 2012, Vol 27, Num 12, pp 2546-2559, issn 0883-2927, 14 p.Article

Degradation of algal lipids by deep-sea benthic foraminifera: An in situ tracer experimentNOMAKI, Hidetaka; OHKOUCHI, Naohiko; HEINZ, Petra et al.Deep-sea research. Part 1. Oceanographic research papers. 2009, Vol 56, Num 9, pp 1488-1503, issn 0967-0637, 16 p.Article

Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events : Nitrogen and carbon isotopic evidence from sedimentary porphyrinKASHIYAMA, Yuichiro; OGAWA, Nanako O; KURODA, Junichiro et al.Organic geochemistry. 2008, Vol 39, Num 5, pp 532-549, issn 0146-6380, 18 p.Article

Different ingestion patterns of ¹³C-labeled bacteria and algae by deep-sea benthic foraminiferaNOMAKI, Hidetaka; HEINZ, Petra; NAKATSUKA, Takeshi et al.Marine ecology. Progress series (Halstenbek). 2006, Vol 310, pp 95-108, issn 0171-8630, 14 p.Article

Carbon isotopic composition of the tetrapyrrole nucleus in chloropigments from a saline meromictic lake : A mechanistic view for interpreting the isotopic signature of alkyl porphyrins in geological samplesOHKOUCHI, Naohiko; NAKAJIMA, Yoji; OGAWA, Nanako O et al.Organic geochemistry. 2008, Vol 39, Num 5, pp 521-531, issn 0146-6380, 11 p.Article

Innovative methods for determining alkenone unsaturation indicesJOHNSON, Carl G; FRYSINGER, Glenn S; NELSON, Robert K et al.Marine chemistry. 2003, Vol 83, Num 1-2, pp 5-22, issn 0304-4203, 18 p.Conference Paper