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| 1 | Kinetic analysis of waste activated sludge hydrolysis and short-chain fatty acids production at pH 10显示文摘The accumulation of short-chain fatty acids (SCFAs), a preferred carbon source for enhanced biological phosphorus removal microbes, was significantly improved when waste activated sludge (WAS) was fermented at pH 10. The kinetics of WAS hydrolysis and SCFAs production at pH 10 was investigated. It was observed that during WAS anaerobic fermentation the accumulation of SCFAs was limited by the hydrolysis process, and both the hydrolysis of WAS particulate COD and the accumulation of SCFAs followed first-order kinetics. The hydrolysis and SCFAs accumulation rate constants increased with increasing temperature from 10 to 35°C, which could be described by the Arrhenius equation. The kinetic data further indicated that SCFAs production at pH 10 was a biological process. Compared with the experiment of pH uncontrolled (blank test), both the rate constants of WAS hydrolysis and SCFAs accumulation at 20°C were improved significantly when WAS was fermented at pH 10. | FENG Leiyu, YAN Yuanyuan, CHEN Yinguang State key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. | 2009 | Journal of Environmental Sciences2009，21，5： | 12 |
| 2 | Co-fermentation of waste activated sludge with food waste for short-chain fatty acids production:effect of pH at ambient temperature显示文摘Effect of pH ranging from 4.0 to 11.0 on cofermentation of waste activated sludge(WAS)with food waste for short-chain fatty acids(SCFAs)production at ambient temperature was investigated in this study.Experimental results showed that the addition of food waste significantly improved the performance of WAS fermentation system,which resulted in the increases of SCFAs production and substrate reduction.The SCFAs production at pH 6.0,7.0,8.0,and 9.0 and fermentation time of 4 d was respectively 5022.7,6540.5,8236.6,and 7911.7 mg COD·L^(-1),whereas in the blank tests(no pH adjustment,pH 8.0(blank test 1),no food waste addition,pH 8.0(blank test 2),and no WAS addition(blank test 3))it was only 1006.9,971.1,and 1468.5 mg COD·L^(-1),respectively.The composition of SCFAs at pH from 6.0 to 9.0 was also different from other conditions and propionic acid was the most prevalent SCFA,which was followed by acetic and n-butyric acids,while acetic acid was the top product under other conditions.At pH 8.0 a higher volatile suspended solids(VSS)reduction of 16.6%for the mixture of WAS and food waste than the sole WAS indicated a synergistic effect existing in fermentation system with WAS and food waste.The influence of pH on the variations of nutrient content was also studied during anaerobic fermentation of the mixture of WAS and food waste at different pH conditions.The release of NH_(4)^(+)-N increased with fermentation time at all pH values investigated except 4.0,5.0 and in blank test one.The concentrations of soluble phosphorus at acidic pHs and in the blank test one were higher than those obtained at alkaline pHs.Ammonia and phosphorus need to be removed before the SCFAsenriched fermentation liquid from WAS and food waste was used as the carbon source. | Leiyu FENG Yuanyuan YAN Yinguang CHEN | 2011 | Frontiers of Environmental Science & Engineering2011，5，4： | 8 |
| 3 | Spatio-temporal expression of miRNAs in tomato tissues upon Cucumber mosaic virus and Tomato aspermy virus infections显示文摘MicroRNAs (miRNAs ) 玩在调整的重要角色种生长和开发。最近的工作证明了细胞的 mRNA 表示的那条调停 miRNA 的规定涉及 pathogenhost 相互作用。然而,预定的知识和工厂 miRNA 表示的空间规定仍然是有限的。这里,我们使用茎环确定的即时反向的 transcriptionpolymerase 链反应表示在病原的过程期间在不同西红柿纸巾七 miRNAs 和他们的目标 mRNAs 变化。与接种嘲笑的工厂相比,调查 miRNAs 和 mRNAs 的表示层次被不同的度在黄瓜马赛克之上提高病毒(CMV )-Fny 和西红柿 aspermy virus-Bj 感染,但是在感染的 CMV-Fny2b (CMV-Fny 2b 删除异种) 是几乎未改变的西红柿幼苗。另外,几 miRNAs 的明显的起来规定和在一些西红柿纸巾的目标 mRNAs 在这些纸巾 organogenesis 和发展建议了他们的特殊角色。时间的分析也表明这些 miRNAs 和 mRNAs 的表情被不同病毒的感染高度调整。一起拿,空间地并且时间地观察到在 miRNAs 的变化和目标 mRNAs 表达式层次显示不同病毒的能力防碍 miRNA 小径,并且在不同西红柿纸巾在显型决心与他们的各自的函数被相关。 | Junli Feng Xin Liu Leiyu Lai Jishuang Chen | 2011 | Acta Biochimica et Biophysica Sinica2011，43，4： | 5 |
| 4 | Comparative transcriptome analysis uncovers the regulatory functions of long noncoding RNAs in fruit development and color changes of Fragaria pentaphylla显示文摘To investigate the molecular mechanism underlying fruit development and color change,comparative transcriptome analysis was employed to generate transcriptome profiles of two typical wild varieties of Fragaria pentaphylla at three fruit developmental stages(green fruit stage,turning stage,and ripe fruit stage).We identified 25,699 long noncoding RNAs(lncRNAs)derived from 25,107 loci in the F.pentaphylla fruit transcriptome,which showed distinct stage-and genotype-specific expression patterns.Time course analysis detected a large number of differentially expressed protein-coding genes and lncRNAs associated with fruit development and ripening in both of the F.pentaphylla varieties.The target genes downregulated in the late stages were enriched in terms of photosynthesis and cell wall organization or biogenesis,suggesting that lncRNAs may act as negative regulators to suppress photosynthesis and cell wall organization or biogenesis during fruit development and ripening of F.pentaphylla.Pairwise comparisons of two varieties at three developmental stages identified 365 differentially expressed lncRNAs in total.Functional annotation of target genes suggested that lncRNAs in F.pentaphylla may play roles in fruit color formation by regulating the expression of structural genes or regulatory factors.Construction of the regulatory network further revealed that the low expression of Fra a and CHS may be the main cause of colorless fruit in F.pentaphylla. | Lijun Bai Qing Chen Leiyu Jiang Yuanxiu Lin Yuntian Ye Peng Liu Xiaorong Wang Haoru Tang | 2019 | Horticulture Research2019，6，1： | 5 |
| 5 | Effect of solids retention time and temperature on waste activated sludge hydrolysis and short-chain fatty acids accumulation under alkaline conditions in continuous-flow reactors显示文摘 | Feng Leiyu Wang Hua Chen Yinguaug | 2009 | Bioresource Technology2009，100，1： | 1 |
| 6 | Effect of solidsretention time and temperature on waste activated sludge hydrolysisand short-chain fatty acids accumulation under alkaline conditionsin continuous-flow reactors显示文摘 | Feng Leiyu Wang Hua Chen Yinguang | 2009 | Bioresource Technology2009，100，1： | 1 |
| 7 | Agrobacterium -mediated genetic transformation and regeneration of transgenic plants using leaf midribs as explants in ramie [ Boehmeria nivea (L.) Gaud]显示文摘 | Xia An Bo Wang Lijun Liu Hui Jiang Jie Chen Shengtuo Ye Leiyu Chen Pingan Guo Xing Huang Dingxiang Peng | 2014 | Molecular Biology Reports2014，，5： | 1 |
| 8 | Performance evaluation of complex systems using evidential reasoning approach with uncertain parameters显示文摘The composition of the modern aerospace system becomes more and more complex.The performance degradation of any device in the system may cause it difficult for the whole system to keep normal working states.Therefore,it is essential to evaluate the performance of complex aerospace systems.In this paper,the performance evaluation of complex aerospace systems is regarded as a Multi-Attribute Decision Analysis(MADA)problem.Based on the structure and working principle of the system,a new Evidential Reasoning(ER)based approach with uncertain parameters is proposed to construct a nonlinear optimization model to evaluate the system performance.In the model,the interval form is used to express the uncertainty,such as error in testing data and inaccuracy in expert knowledge.In order to analyze the subsystems that have a great impact on the performance of the system,the sensitivity analysis of the evaluation result is carried out,and the corresponding maintenance strategy is proposed.For a type of Inertial Measurement Unit(IMU)used in a rocket,the proposed method is employed to evaluate its performance.Then,the parameter sensitivity of the evaluation result is analyzed,and the main factors affecting the performance of IMU are obtained.Finally,the comparative study shows the effectiveness of the proposed method. | Leiyu CHEN Zhijie ZHOU Changhua HU Ruihua YUE Zhichao FENG | 2021 | Chinese Journal of Aeronautics2021，34，1： | 1 |
| 9 | Perceived value, transaction cost, and repurchase-intention in online shopping: A relational exchange perspective 显示文摘 | Wu Leiyu Chen Kuanyang Chen Poyuan | 2014 | Journal of Business Research2014，67，1： | 1 |
| 10 | Nitrogen-doped carbon nanotubes as efficient and durable metal-free cathodic catalysts for oxygen reduction in microbial fuel cells显示文摘 | Feng Leiyu Yan Yuanyuan Chen Yinguang | 2011 | Energy Environ Sci2011，4，： | 1 |
| 11 | Effect of solids retention time and temperature on waste activated sludge hydrolysis and short-chain fatty acids accumulation under alkaline conditions in conun uous-flow reactors显示文摘 | Feng Leiyu Wang Hua Chen Yinguang | 2009 | Bioresource Technology2009，100，1： | 1 |
| 12 | Enhanced production of short-chain fatty acid by co-fermentation of waste activated sludge and kitchen waste under alkaline conditions and its application to microbial furl cells显示文摘 | Yinguang Chen Jingyang Luo Yuanyuan Yan Leiyu Feng | 2013 | Applied Energy2013，102，： | 1 |
| 13 | Effect of solids retention time and temperature on waste activated sludge hydrolysis and short-chain fatty acids accumulation under alkaline conditions in continuous-flow reactors显示文摘 | Feng Leiyu Wang Hua Chen Yinguang | 2009 | Bioresource Technolo- gy2009，100，1： | 1 |
| 14 | Control of large linear magnetoelectricity in Co_(3)NiNb_(2)O_(9)显示文摘Magnetoelectric(ME)materials have caught worldwide attentions owing to their potential technological applications in ME switching devices or high-density data storage.However,realizing a sufficiently strong ME effect in one single material is always the key issue.Herein,we systematically investigate the Co_(3)NiNb_(2)O_(9),including the characterization of its crystalline structure,magnetism,specific heat,and pyroelectric properties.It is revealed that Co_(3)NiNb_(2)O_(9) exhibits a remarkable ME response below the magnetic phase transition temperature of TN-32 K.On one hand,the magnetic field-induced electric polarization is observed below TN while it is non-ferroelectric at no magnetic field.The evaluated ME coefficient is as large as 21.2 ps/m.On the other hand,the magnetization is significantly modulated by the applied electric field,with the inverse ME coefficient being 14.1 ps/m.The observed ME responses suggest a stable ME mutual control by the magnetic or electric field in Co_(3)NiNb_(2)O_(9). | Xiang Li Yu Wang Meifeng Liu Yunlong Xie Jiahua Min Xiyu Chen Jingwen Gong Leiyu Li Min Zeng Yiming Xu Yiru Wang Biwen Li Xiuzhang Wang Jun-Ming Liu | 2021 | Journal of Materiomics2021，7，4： | 0 |
| 15 | Resistance index and browning mechanism of apple peel under high temperature stress显示文摘Apples are one of the most important economic crops worldwide.Because of global warming and an aggravation of environmental,abnormally high temperatures occur frequently in fruit-growing season and seriously affect normal fruit growth and reduce fruit quality and yield.We took five-year-old Ruixue’(Qinfu 1×Pink Lady;CNA20151469.1) fruits as test materials,and the ambient temperature during fruit development was monitored.The results showed that during the fruit-growing season,especially during the rapid growth stage (July to August),the maximum daily temperature exceeded 30℃ and lasted for more than 40 days.To determine the effects of high temperature stress on the apple fruit resistance,we treated expanding,veraison,and maturity-period fruits at different temperatures.It was found that the fruits of the expanding period showed strong resistance to high temperature stress,whereas during veraison and maturity,fruit resistance to high temperature stress decreased,and the fruit peel browning phenotype appeared.Meanwhile,the content of malonaldehyde (MDA),hydrogen peroxide (H_(2)O_(2)),and superoxide anion (O._(2)^(-)) in the peel gradually increased with increasing temperature.The content of total phenols,flavanol,and flavonoids in the peel decreased substantially at 45℃.Moreover,it was found that polyphenol oxidase gene (MdPPO1) was most sensitive to high temperature stress in apple.Furthermore,transient and stable MdPPO1 overexpression significantly promoted peel browning.The transgenic materials were more sensitive to high temperatures,and browning was more severe compared to non-genetically modified organism (WT).Stable MdPPO1 knockout calli obtained via clustered regularly interspersed short palindromic repeats (CRISPR/Cas9) gene knockout technology reduced the browning phenotype,and the resultant fruits were not sensitive to the effects of high temperature stress.Thus,MdPPO1 expression may be a key factor of high temperature-related changes observed in the browning phenotype that provides a scientific theoretical basis for the selection of high temperature-resistant varieties and apple cultivation and management in the future. | Hui Wang Shuhui Zhang Zidun Wang Dongmei Li Leiyu Yan Yifeng Feng Xiaojie Liu Rongxin Chen Wenmin Fan Lulong Sun Zhengyang Zhao | 2024 | Horticultural Plant Journal2024，10，2： | 0 |
| 16 | Tracking gassing behavior in pouch cell by operando on-line electrochemical mass spectrometry显示文摘As the rapid development of more powerful and safer lithiumion batteries, the mechanism study of gases evolution is attacking more and more attention in recent years. Especially under overcharge/discharge and/or high-temperature working condition. | Haitang Zhang Jianken Chen Baodan Zhang Xiaohong Wu Zhengang Li Leiyu Chen Junhao Wang Xiaoyu Yu Haiyan Luo Jiyuan Xue Yu-Hao Hong Yu Qiao Shi-Gang Sun | 2023 | Journal of Energy Chemistry2023，，9： | 0 |
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