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James C. Hower Jennifer M.K. O'Keefe Michael A. Watt Timothy J. Pratt Cortland F. Eble J.D. Stucker Allison R. Richardson Irena J. Kostova 《International Journal of Coal Geology》2009,80(2):135-143
Macrinite is a, generally, rare inertinite maceral, often incorporating remnants and fragments of other macerals, including vitrinite, liptinite, and other inertinite. The associated inertinites include multiple forms of funginite. Funginite is also commonly found in association with vitrinite of slightly elevated reflectance and with degraded varieties of vitrinite. Together with the highly degraded macrinite, the latter two associations are here inferred to be part of a continuum of fungal and microbial degradation of peat. In any case, the origin of some macrinite is potentially distinct from that of inertinite generated by fire. 相似文献
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Julellaavicenniae两个代谢产物结构的测定 总被引:1,自引:0,他引:1
从Julellaavicenniae海洋真菌菌体中分离出18种化合物,从它的培养液中分出三种化合物。本文根据MS,NMR等光谱数据和化学学方法,测定了菌体代谢产物中的麦角甾醇和反 -9二十烯酸乙烯的结构。 相似文献
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Thorium(IV) biosorption is investigated by citric acid treated mangrove endophytic fungus Fussarium sp. #ZZF51 (CA-ZZF51) from South China Sea. The biosorption process was optimized at pH 4.5, equilibrium time 90 min, initial thorium(IV) concentration 50 mg L−1 and adsorbent dose 0.6 g L−1 with 90.87% of removal efficiency and 75.47 mg g−1 of adsorption capacity, which is obviously greater than that (11.35 mg g−1) of the untreated fungus Fussarium sp. #ZZF51 for thorium(IV) biosorption under the condition of optimization. The experimental data are analyzed by using isotherm and kinetic models. Kinetic data follow the pseudo-second-order model and equilibrium data agree very well with the Langmuir model. In addition, FTIR analysis indicates that hydroxyl, amino, and carbonyl groups act as the important roles in the adsorption process. 相似文献
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本文基于塔里木盆地原油中发现的89属183种孢子花粉化石和16属27种菌藻类化石的研究,通过孢粉化石的油源对比确认中代陆相油源的重要贡献、并根据孢子花粉母体植物和藻类的生态特征讨论了油源岩形成的环境。 相似文献
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《Marine pollution bulletin》2014,78(1-2):172-176
A fungus, Aureobasidium pullulans, was isolated from marine biofilm and identified. A bioassay-guided fractionation procedure was developed to isolate and purify antifouling compounds from A. pullulans HN. The procedure was: fermentation broth—aeration and addition of sodium thiosulfate–graduated pH and liquid–liquid extraction—SPE purification—GC–MS analysis. Firstly, the fermentation broth was tested for its toxicity. Then it was treated with aeration and addition of sodium thiosulfate, and its toxicity was almost not changed. Lastly, antifouling compounds were extracted at different pH, the extract had high toxicity at pH 2 but almost no toxicity at pH 10, which suggested the toxicants should be fatty acids. The EC50 of the extract against Skeletonema costatum was 90.9 μg ml−1, and its LC50 against Balanus amphitrete larvae was 22.2 μg ml−1. After purified by HLB SPE column, the EC50 of the extract against S. costatum was 49.4 μg ml−1. The myristic and palmitic acids were found as the main toxicants by GC–MS. 相似文献
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Bahi Jalili Seh‐Bardan Radziah Othman Samsuri Ab Wahid Aminudin Husin Fardin Sadegh‐Zadeh 《洁净——土壤、空气、水》2012,40(6):607-614
A column bioleaching experiment was carried out to compare the effectiveness of the fungus Aspergillus fumigatus to bioleach arsenic (As) and heavy metals from the tailings using two different methods. In the first method, which is named as distribution method (DM), the fungus was distributed in the column by means of vertical and horizontal layers of coarse sand. In the other method, named as surface applied method (SAM), the fungus was cultivated on the surface of the tailings, which was covered with a few centimeters of coarse sand. Results showed that in the DM, oxalic acid production was stimulated and maximum removal of As, Fe, Mn, and Zn was 53, 51, 81, and 62%, respectively. However, Pb removal was low (8%), which might be due to the precipitation of Pb as its oxalates. On the other hand, the maximum removal of As, Fe, Mn, Pb, and Zn were 22, 28, 37, 64, and 34%, respectively, for the SAM. Results of the sequential extraction study showed that the DM was effective in removing the water soluble, exchangeable, carbonate, and Fe/Mn oxide fractions of As, Fe, Mn, and Zn. Our study suggested that A. fumigatus has a potential to be used in remediation of heavy metal contaminated sites. Distributing the fungus throughout the entire tailings columns improved the bioleaching of heavy metals by the fungus. 相似文献
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