Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Tsutomu Machihara"'
Publikováno v:
Journal of Southeast Asian Earth Sciences. 5:53-60
Extensive studies have been carried out by many workers on sedimentary kerogens. However little is known of the details of the chemical structure of kerogens and of the relation between immature and mature kerogens on a molecular basis. The present a
Publikováno v:
Organic Geochemistry. 16:805-813
Lipid biomarker compounds ( n -alkanoic acids, n -alkanols, sterols, n -alkanes, chlorophyll derivatives) and total lipid carbon in a chloroform extractable fraction, isolated from sedimentary deposits up to ∼2 Ma old of a 1400 m core sample of Lak
Publikováno v:
Organic Geochemistry. 16:143-153
A compaction pyrolysis system was developed to simulate changes of source rocks during the course of burial and subsidence in a sedimentary basin. This system can reproduce a number of phenomena that previous methods could not achieve. With programme
Autor:
Makoto Yamada, Tsutomu Machihara
Publikováno v:
Journal of the Japanese Association for Petroleum Technology. 55:208-214
A rapid method for determination of organic carbon in carbonate rocks has been developed to replace the normal procedure in which carbonate samples are pretreated with hydrochloric acid to decompose carbonate minerals. The method involves dry combust
Publikováno v:
Memoirs of National Institute of Polar Research. Special issue. 43:149-158
Alkanes and alkanoic acids in the Beacon Supergroup samples, sedimentary rocks, silicified wood and coal, from the Allan Hills and the Carapace Nunatak of southern Victoria Land in Antarctica were studied to elucidate the organic sources and sediment
Autor:
Tsutomu Machihara, Ryoshi Ishiwatari
Publikováno v:
GEOCHEMICAL JOURNAL. 14:279-288
The insoluble organic matter (young kerogen) in a surface sediment from Lake Haruna was subjected to alkaline permanganate oxidation. The young kerogen was easily degraded under the mild condition and relatively large amounts of CO2 and acid-insolubl
Autor:
Tsutomu Machihara, Ryoshi Ishiwatari
Publikováno v:
SIL Proceedings, 1922-2010. 21:244-247
Autor:
Tsutomu Machihara
Publikováno v:
Journal of the Japanese Association for Petroleum Technology. 53:223-229
Eighteen kerogen samples isolated from the Noshiro GS-1 cores (589-3, 510m) were examined by pyrolysis gas chromatography. Pristene (prist-1-ene) compound was detected in the pyrolyzates of all the kerogens, and the ratio of the pristene to C17 alkan
Autor:
Tsutomu Machihara, Ryoshi Ishiwatari
Publikováno v:
Geochimica et Cosmochimica Acta. 46:1459-1464
Lipid fraction and cell-wall materials have been separated from three types of algae (blue green, Microcystis sp.; green, Scenedesmus sp. and diatomaceous Diatoma sp.) and their KMnO4 oxidation products (aliphatic α,ω-C 2 -C 12 dicarboxylic acids;
Autor:
Tsutomu Machihara, Ryoshi Ishiwatari
Publikováno v:
Geochimica et Cosmochimica Acta. 46:825-831
Kerogen was isolated from a marine sediment from Tanner Basin, offshore California. Samples of the kerogen were heated under an inert atmosphere at various temperatures and times. The heated and unheated kerogens were subjected to alkaline potassium