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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 | Waste activated sludge hydrolysis and acidification: A comparison between sodium hydroxide and steel slag addition显示文摘Alkaline treatment with steel slag and NaOH addition were investigated under different pH conditions for the fermentation of waste activated sludge. Better performance was achieved in steel slag addition scenarios for both sludge hydrolysis and acidification. More solubilization of organic matters and much production of higher VFA(volatile fatty acid)in a shorter time can be achieved at pH 10 when adjusted by steel slag. Higher enzyme activities were also observed in steel slag addition scenarios under the same pH conditions.Phosphorus concentration in the supernatant increased with fermentation time and pH in NaOH addition scenarios, while in contrast most phosphorus was released and captured by steel slag simultaneously in steel slag addition scenarios. These results suggest that steel slag can be used as a substitute for NaOH in sludge alkaline treatment. | Ying Zhang Chaojie Zhang Xuan Zhang Leiyu Feng Yongmei Li Qi Zhou | 2016 | Journal of Environmental Sciences2016，28，10： | 5 |
| 6 | Adaptive tracking H-infinity control for switched nonlinear systems with unknown control gain sign显示文摘This paper addresses the adaptive tracking control scheme for switched nonlinear systems with unknown control gain sign. The approach relaxes the hypothesis that the upper bound of function control gain is known constant and the bounds of external disturbance and approximation errors of neural networks are known. RBF neural networks (NNs) are used to approximate unknown functions and an H-infinity controller is introduced to enhance robustness. The adaptive updating laws and the admissible switching signals have been derived from switched multiple Lyapunov function method. It's proved that the resulting closed loop system is asymptotically Lyapunov stable such that the output tracking error performance and H-infinity disturbance attenuation level are well obtained. Finally, a simulation example of Forced Duffing systems is given to illustrate the effectiveness of the proposed control scheme and improve significantly the transient performance. | LeiYU ShuminFEI HairongZHU XunLI | 2011 | 控制理论与应用(英文版)2011，9，4： | 3 |
| 7 | Differences between physiological and pathological convulsive thresholds in patients with epilepsy显示文摘BACKGROUND: Physiological convulsive thresholds degrade when the brain is in some pathologic states; thus, a level of stimulus that cannot provoke a convulsion may evoke a seizure or epileptic seizure. OBJECTIVE: To investigate the changes that occur in the brain when the physiological convulsive threshold becomes pathological, and to determine what differences occur in pathological and physiological convulsive thresholds during the development of epilepsy. DESIGN: A randomized controlled animal experiment. SETTING: Research Institute of Epilepsy of Shanxi Medical University; Department of Neurology, The Third Hospital of Shanxi Medical University; Research Institute of Function of Shanxi Medical University. MATERIALS: Thirty-six female Wistar rats were selected for this study. The rats were obtained from the experimental animal center of Shanxi Medical University. All laboratory procedures complied with animal ethical standards. The animals were randomly divided into three groups: a strong current group, a weak current group and a control group, with 12 rats in each group. An automatic determinator of seizure threshold was made at Shanxi Medical University and Taiyuan University of Technology. Two bipolar stainless steel stimulating electrodes and an electrode connector (diameter 1.2 mm) were made at Taiyuan University of Technology. METHODS: This study was performed in the laboratory of Research Institute of the Epilepsy of Shanxi Medical University between December 2005 and August 2006. The threshold of localized seizures was measured by performing direct cortical stimulation in rats under anesthesia. After 1 week of post-operative recovery, electric stimulation was started with three different kinds of stimulation. Seizure activity was induced by a ramp-shaped single train of biphasic pulses (50 Hz, total pulse duration of 2 ms, increasing from 0 to 2 000 μA in 15 seconds). The threshold of localized seizures (TLS) has been defined as the minimum current intensity necessary to provoke convulsion of the forelimbs and/or facial muscles. Up to the TLS, if stimulation continued, the current intensity necessary to provoke the generalized seizures is called the threshold of generalized seizures (TGS). If stimulation is continued for about 2 seconds when the TGS is reached, rats still showed generalized clonic activity after stimulation ceased. When seizures stopped, a short period of immobility can be observed. The current intensity is called the threshold of prolonged seizures (TPS). The rats in the strong current group were stimulated up to the current level required to reach the TPS. In the course of stimulation, first, the TLS was recorded, then the TGS, and finally the TPS. The stimulation interval in one session was 10 minutes, repeated twice daily. The rats in the weak current group were only stimulated up to the current levels required to reach the TGS; first, the TLS was recorded and then the TGS was measured at the same time as the strong current group. Control animals were also equipped with a full electrode set and placed in the same conditions, but no stimulation took place, only electroencephalogram (EEG) recording at the same times as the experimental groups. MAIN OUTCOME MEASURES: ① Stimulation of the two experimental groups lasted for 11 weeks and then observation of their behavior and electroencephalogram recording continued for 4 weeks. The control group was also observed over a total of 15 weeks. ② Observing neuronal damage/loss in the hippocampus with a light microscope using a 250× visual field. RESULTS: All 36 Wistar rats were included in the final analysis. At the beginning of the experiment, the convulsive thresholds were all above 1 100 μA, although there were significant individual variations among rats of the same group. Those thresholds quickly declined during the initial 4 weeks of repetitive electrical stimulation. The convulsive thresholds approached a constant level in the 10th week after commencement of stimulation. There were no significant changes in thresholds when stimulations lasted longer; the convulsive thresholds and the variations in rats of the same group were significantly lower than at the beginning of the trial (P < 0.01). An interictal discharge was also recorded in the 3rd week in the strong current group, and in the 8th week in the weak current group; these discharges were concomitant with neuronal damage and loss in the hippocampus. There was no abnormality observed in the control group. CONCLUSION: These findings indicated that the convulsion threshold in the brain should be divided intotwo stages: a physiological convulsive threshold and a pathological convulsive threshold (epileptic threshold). The epileptic threshold is created by pathologically acquired factors, which give rise to brain damage. The increase in the intensity of these pathologically acquired factors led to aggravation of damage. | Yuxi Liu Leiyu Geng Jiali Xu Mingzheng Wang Ce Zhang Yu Zhang | 2008 | Neural Regeneration Research2008，3，3： | 3 |
| 8 | An ethnobotanical study of forage plants in Zhuxi County in the Qinba mountainous area of central China显示文摘In the Qinba mountainous area of Central China,pig farming has a significant impact on the growth of the rural economy and has substantially increased farmer incomes.Traditional knowledge plays an important role in the selection of forage plant species for pig farming by local people.This study aimed to identify the forage plants used for pig feeding and to catalog indigenous knowledge regarding their use.During 2016 and 2017,ethnobotanical surveys and inventories were conducted in Zhuxi County,Hubei Province,China.Data were collected using semi-structured interviews,key informant reports,free listings,guided field walks,and participatory observations with 77 households in 16 villages in 13 towns/townships.The obtained data were analyzed using a relative frequency citation(RFC)index.Overall,145 wild forage plants from 91 genera and 31 families were recorded.The most cited families were Asteraceae,Polygonaceae,Urticaceae,Amaranthaceae,Fabaceae,Cruciferae,Caryophyllaceae,and Lamiaceae.Whole plants(75.9%)and tender leaves(12.4%)were the most frequently used parts of the plants.Most of the forage plants were herbaceous(88.9%).Almost all forage plants could be collected throughout the year(62.7%).Raw and cooked were the two main preparation methods.The most frequently cited species were Taraxacum mongolicum,Bidens pilosa,Sonchus oleraceus,Pilea verrucosa,and Pilea pumila var.obtusifolia.A total of 14 species were identified as the top forage plants in Zhuxi County based on their RFC values(RFC value greater than 0.5).Local people possess rich traditional knowledge about the utilization and management of forage plants for pig feeding.However,the maintenance of this traditional knowledge may be seriously threatened by changes in pig feeding modes and the lack of successors.Appropriate strategies and action plans have been suggested for the conservation of traditional knowledge associated with biodiversity and the sustainable use of forage species resources.These include 1)taking targeted measures to protect forage resources and associated traditional knowledge;2)strengthening research on the forage plants with the highest RFC values for nutritional value,digestibility,other functions,and ecological status;and 3)enhancing the identification of poisonous forage plants. | Jun Yang Jifeng Luo Qiliang Gan Leiyu Ke Fengming Zhang Hairu Guo Fuwei Zhao Yuehu Wang | 2021 | Plant Diversity2021，43，3： | 3 |
| 9 | GST polymorphisms are associated with hepatocellular carcinoma risk in Chinese population显示文摘AIM: To investigate the association between GSTM1 and GSTT1 polymorphisms and the risk of hepatocellular carcinoma (HCC) in Chinese population. METHODS: Literature databases including PubMed, ISI web of science and other databases were searched.Pooled odds ratio (OR) and 95% CI were calculated using random- or fixed-effects model. Subgroup analysis and sensitivity analysis were also performed. RESULTS: Nineteen studies of GSTM1 (2660 cases and 4017 controls) and 16 studies of GSTT1 (2410 cases and 3669 controls) were included. The GSTM1/GSTT1 null genotypes were associated with increased risk of HCC in Chinese population (for GSTM1, OR = 1.487, 95% CI: 1.159 to 1.908, P = 0.002; for GSTT1, OR = 1.510, 95% CI: 1.236 to 1.845, P = 0.000). No publication bias was detected. In subgroup analysis, glutathione S-transferases polymorphisms were significantly associated with HCC risk among the subjects living in high-incidence areas, but not among the subjects living in low-incidence areas. CONCLUSION: The present meta-analysis suggests that GSTM1/GSTT1 null genotypes are associated with increased risk of HCC in Chinese population. | LeiYu Chun-YuWang BoXi LeiSun Ruo。Qiwang Yin—KunYan Li-YingZhu | 2011 | World Journal of Gastroenterology2011，17，27： | 2 |
| 10 | Founding team and start-up competitive advantage 显示文摘 | Wu Leiyu Wang Chunju Tseng Chunyao | 2009 | Management Decision2009，47，2： | 1 |
| 11 | Catalytic pyrolysis of rice husk by mixing with zinc oxide: Characterization of bio-oil and its rheological behavior显示文摘 | Zhou Leiyu Yang Hongmin Wu Hao | 2013 | Fuel Processing Technology2013，，106： | 1 |
| 12 | 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 |
| 13 | 显示文摘 | LIXiu-Kai(李秀凯) LEIYu(雷宇) ZHAOJing(赵静) etal | | Gaodeng Xuexiao Hatucue Xuebao0，，： | 1 |
| 14 | 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 |
| 15 | Contribution of Primary Care to Health Systems and Healt显示文摘 | Starfield Barbara Shi Leiyu | 2005 | Milbank Quarterly2005，83，3： | 1 |
| 16 | Effect of ul- trasonic specific energy on waste activated sludge solubilizationand enzyme activity显示文摘 | Yan Yuanyuan Feng Leiyu Zhang Chaojie | 2010 | African Journal of Biotechnology2010，9，12： | 1 |
| 17 | Integration of a coagulation step in a cometabolism sequencing batch reactor for the treatment of DSD acid wastewater form a reduction process 显示文摘 | Yan Yuanyuan Feng Leiyu Sun Liping | 2010 | Desalination2010，250，1： | 1 |
| 18 | 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 |
| 19 | 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 |
| 20 | Resources, dynamic capabilities and performance in a dynamic environment: perception in Taiwanese IT enterprises显示文摘 | WU Leiyu | 2006 | Information & Management2006，43，3： | 1 |
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