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| 1 | Geochemistry of Heavy Oil in the T Block,Oriente Basin and its Origin Mechanism显示文摘Exploration and development experience show that there is obvious oil gravity difference between the southern part and northern part of the'M1'reservoir in the Fanny oil field in the slope of the Oriente Basin,Ecuador.The American Petroleum Institute Gravity(API) values of oils in the northern part are higher than the one in the southern part of the Fanny oil field,with the values of 20°and 10.0°-13.0°,respectively.So the primary purpose of this study was to analyze the heavy oil characteristics of biodegradation and the oil-oil correlation according to the biomarker data and theδ^(13)C signature of oil samples from T block.The results of the hydrocarbon gas chromatography fingermark and the inversion attribute characteristics indicated that there are fluid compartments between the'M1'reservoir of Fanny south.Finally,the models of oil-gas accumulation under the control of multiple-activities of complicated fault systems,as well as the origin of heavy oil,are contended.The early stage oils from the western part of the basin were biodegraded heavily in varying degrees in the whole basin,and the later stage oils were derived from the southern part in a large scale and were mature and lighter.Generally,oil mixing is the primary control of net oil properties,such as API gravity in Oriente Basin.We therefore predicted that the API gravity variation of oil pools radically depends on the injection amount of the later stage oil.Because of the shale barrier in the'M1'reservoir of Fanny south,the later stage hydrocarbon could not pass through and contribute to increase the oil API value. | HU Ying YIN Jiquan SU Yongdi XIE Yinfu WANG Xiaoxia XIAO Gaojie YU Zhaohua WANG Li | 2010 | Acta Geologica Sinica(English Edition)2010，84，2： | 2 |
| 2 | Suppressing EMI in power converters via caotic SPWM control based on Spectrum Analysis Approach显示文摘 | LI Hong LIU Yongdi LU Jinhu | 2014 | IEEE Transactions on Industrial Electronics2014，61，11： | 1 |
| 3 | Preparation of titanium carbonitride nanoparticles from a novel refluxing-dedved precursor显示文摘 | LI Yongdi YAO Yadortg SHAO Wei | 2009 | Materials Letters2009，63，22： | 1 |
| 4 | Highly Efficient Photothermocatalytic CO_(2) Reduction in Ni/Mg-Doped Al_(2)O_(3) with High Fuel Production Rate, Large Light-to-Fuel Efficiency, and Good Durability显示文摘A novel nanocomposite of Ni nanoparticles loaded on Mg-doped Al_(2)O_(3)(Ni/Mg-Al_(2)O_(3))was prepared.By photothermocatalytic CO_(2) reduction with methane(CRM)merely using focused UV-vis-IR illumination on Ni/Mg-Al_(2)O_(3),high production rates of H_(2)(r_(H2),69.71 mmol min^(−1) g^(−1))and CO(rCO,74.57 mmol min^(−1) g^(−1))and an extremely large light-to-fuel efficiency(η,32.9%)are acquired.High rH2 and rCO(51.07 and 59.66 mmol min^(−1) g^(−1))and a largeη(32.5%)are acquired even by using focusedλ>560 nm vis-IR illumination.Ni/Mg-Al_(2)O_(3) shows good durability for photothermocatalytic CRM due to the side reaction of carbon deposition being enormously inhibited in comparison with a reference catalyst of Ni nanoparticles loaded on Al_(2)O_(3).The enormous carbon deposition inhibition is ascribed to the presence of a fence of CO_(2) molecules(strongly adsorbed on Mg-doped Al_(2)O_(3))around Ni nanoparticles,which block the polymerization and growth of carbon species to nanofibers by promoting the oxidation of carbon species formed by CH_(4) dissociation.The high photothermocatalytic activity of Ni/Mg-Al_(2)O_(3) arises from efficient light-driven thermocatalytic CRM.A photoactivation is found to considerably raise the photothermocatalytic activity of Ni/Mg-Al_(2)O_(3) because of the apparent activation energy(Ea)being substantially decreased upon focused illumination.The Ea reduction is associated with the rate-determining steps of CRM(e.g.,CH_(4) dissociation and the oxidation of carbon species)being accelerated upon focused illumination. | Xin Tan Shaowen Wu Yuanzhi Li Qian Zhang Qianqian Hu Jichun Wu An Zhang Yongdi Zhang | 2022 | Energy & Environmental Materials2022，5，2： | 1 |
| 5 | Synergistic effects of chemical additives and mature compost on reducing H_2S emission during kitchen waste composting显示文摘Additives could improve composting performance and reduce gaseous emission,but few studies have explored the synergistic of additives on H_(2)S emission and compost maturity.This research aims to make an investigation about the effects of chemical additives and mature compost on H_(2)S emission and compost maturity of kitchen waste composting.The results showed that additives increased the germination index value and H_(2)S emission reduction over 15 days and the treatment with both chemical additives and mature compost achieved highest germination index value and H_(2)S emission reduction(85%).Except for the treatment with only chemical additives,the total sulfur content increased during the kitchen waste composting.The proportion of effective sulfur was higher with the addition of chemical additives,compared with other groups.The relative abundance of H_(2)S-formation bacterial(Desulfovibrio)was reduced and the relative abundance of bacterial(Pseudomonas and Paracoccus),which could convert sulfur-containing substances and H_(2)S to sulfate was improved with additives.In the composting process with both chemical additives and mature compost,the relative abundance of Desulfovibrio was lowest,while the relative abundance of Pseudomonas and Paracoccus was highest.Taken together,the chemical additives and mature compost achieved H_(2)S emission reduction by regulating the dynamics of microbial community. | Yongdi Liu Haihou Wang Hao Zhang Yueyue Tao Rui Chen Sheng Hang Xiaoyan Ding Meidi Cheng Guochun Ding Yuquan Wei Ting Xu Ji Li | 2024 | Journal of Environmental Sciences2024，，5： | 0 |
| 6 | Higher N_(2)O production in sequencing batch reactors compared to continuous stirred tank reactors:effect of feast-famine cycles显示文摘Nitrous oxide(N_(2)O)is a potent greenhouse gas that can be emitted during the biological treatment of wastewater.In this study,a comparison of the long-term performance characteristics and N_(2)O production of sequencing batch reactors(SBR)and continuous stirred tank reactors(CSTR)during nitrite-based denitrification was undertaken.It was found that both reactors had NO_(2)^(-)-N removal efficiencies over 99.9%,but the N_(2)O-N emissions from the SBR reached~2.3%of the removal nitrite-N load,while in the CSTR it never exceeded 0.1%.High frequency sampling during one operation cycle of the SBR demonstrated that the N_(2)O accumulation ratio was~0.1%during the feast period,increased to~1.9%in the first five hours of the famine period,and then gradually reached~2.3%at the end of famine.Batch experiments showed that limiting extracellular electron donor is required for N_(2)O accumulation in cells from the SBR-famine period and that cells from the CSTR do not accumulate N_(2)O when either nitrite or carbon is limiting.Another notable difference in the two reactor communities was the high level of accumulation of intracellular granules,most likely polyhydroxybutyrate(PHB),in cells during the feast period in the SBR.Metagenome assembly and binning found that one genome(PRO1),which is a Thauera,accounted for over half the metagenomic reads in both reactors.Neither shifts in gene regulation nor community composition explained the observed differences in reactor performance suggesting some post-transcriptional regulation obligatorily linked to antecedent conditions underly increased N_(2)O production in the SBR. | Xinjie Yan Xunyu Shen Jipeng Wang Jinlong Zhuang Yu Wang Jinchi Yao Hong Liu Yongdi Liu James P.Shapleigh Wei Li | 2023 | Frontiers of Environmental Science & Engineering2023，17，4： | 0 |
| 7 | Ancient genomes reveal the genetic inheritance and recent introgression in Chinese indigenous pigs显示文摘Dear Editor,As one of the oldest domesticated livestock, pigs were independently domesticated in the Near East and East Asia,approximately 10,000 years ago (Larson et al., 2010). | Jia Wen Zhuqing Zheng Mian Gong Dong Li Songmei Hu Yudong Cai Yongdi Wang Hojjat Asadollahpour Nanaei Naifan Zhang Taiyong Yu Dawei Cai Yu Jiang | 2022 | Science China(Life Sciences)2022，65，4： | 0 |
| 8 | Fabrication of Tungsten Carbide Nanoparticles from Refluxing Derived Precursor显示文摘Tungsten carbide(WC) nanoparticles were fabricated from a novel refluxing-derived precursor. The precursor was prepared by acid hydrolysis of Na2WO4 with concentrated HCl in water followed by refl uxing with ethanol and n-Dedocane, respectively. Then it was heat-treated to 1 200 ℃ for 2 h in vacuum to obtain WC nanoparticles. X-ray studies reveal the formation of hexagonal tungsten carbide and the grain size of 24.3 nm. SEM image shows WC nanoparticles with particle size of 20-60 nm. Long time refl uxing results in alkane dehydrogenation and coke formation. The coke is the carbon source in the carbothermal reduction reaction. The novel route of two-stage refl uxing is quite general and can be applied in the synthesis of similar carbides. | 文季秋 LI Yongdi MENG Xiaopeng YIN Guangfu 姚亚东 | 2015 | Journal of Wuhan University of Technology(Materials Science)2015，30，2： | 0 |
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