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| 1 | A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal显示文摘A novel modified pilot scale anaerobic oxidation ditch with additional internal anoxic zones was operated experimentally, aiming to study the improvement of biological nitrogen and phosphorus removal and the effect of enhanced denitrifying phosphorus removal in the process. Under all experimental conditions, the anaerobic-oxidation ditch with additional internal anoxic zones and an internal recycle ratio of 200% had the highest nutrient removal efficiency. The effluent NH4+-N, total nitrogen (TN), PO43-P and total phosphorus (TP) contents were 1.2mg·L-1 , 13mg·L-1, 0.3mg·L-1 and 0.4mg·L-1, respectively, all met the discharge standards in China. The TN and TP removal efficiencies were remarkably improved from 37% and 50% to 65% and 88% with the presence of additional internal anoxic zones and internal recycle ratio of 200%. The results indicated that additional internal anoxic zones can optimize the utilization of available carbon source from the anaerobic outflow for denitrification. It was also found that phosphorus removal via the denitrification process was stimulated in the additional internal anoxic zones, which was beneficial for biological nitrogen and phosphorus removal when treating wastewater with a limited carbon source. However, an excess internal recycle would cause nitrite to accumulate in the system. This seems to be harmful to biological phosphorus removal. | LIU Wei YANG Dianhai XU Li SHEN Changming | 2013 | Chinese Journal of Chemical Engineering2013，21，2： | 5 |
| 2 | Application of waste frying oils in the biosynthesis of biodemulsifier by a demulsifying strain Alcaligenes sp.S-XJ-1显示文摘Exploration of biodemulsifiers has become a new research aspect.Using waste frying oils(WFOs) as carbon source to synthesize biodemulsifiers has a potential prospect to decrease production cost and to improve the application of biodemulsifiers in the oilfield.In this study,a demulsifying strain,Alcaligenes sp.S-XJ-1,was investigated to synthesize a biodemulsifier using waste frying oils as carbon source.It was found that the increase of initial pH of culture medium could increase the biodemulsifier yield but decrease the demulsification ratio compared to that using paraffin as carbon source.In addition,a biodemulsifier produced by waste frying oils and paraffin as mixed carbon source had a lower demulsification capability compared with that produced by paraffin or waste frying oil as sole carbon source.Fed-batch fermentation of biodemulsifier using waste frying oils as supplementary carbon source was found to be a suitable method.Mechanism of waste frying oils utilization was studied by using tripalmitin,olein and tristearin as sole carbon sources to synthesize biodemulsifier.The results showed saturated long-chain fatty acid was diffcult for S-XJ-1 to utilize but could effectively enhance the demulsification ability of the produced biodemulsifier.Moreover,FT-IR result showed that the demulsification capability of biodemulsifiers was associated with the content of C=O group and nitrogen element. | Jia Liu Kaiming Peng Xiangfeng Huang Lijun Lu Hang Cheng Dianhai Yang Qi Zhou Huiping Deng | 2011 | Journal of Environmental Sciences2011，23，6： | 4 |
| 3 | Effects of sludge age on anaerobic acidification of waste activated sludge: Volatile fatty acids production and phosphorus release显示文摘Effects of sludge age on volatile fatty acids (VFAs) production and Phosphorus (P) release during anaerobic acidification of waste activated sludge (WAS) were investigated.Sequencing batch reactors (SBR) fed with simulating domestic sewage were applied to produce WAS of different sludge ages,and batch tests were used for anaerobic acidification.The maximum dissolved total organic carbon,release of PO_(4)^(3+)-P,and accumulation of acetate (C2),propionate (C3),butyrate (C4),and valerate (C5) decreased by 56.2%,55.8%,52.6%,43.7%,82.4%and 84.8%,respectively,as the sludge age of WAS increased from 5 to 40 days.Limited degradation of protein played a dominating role in decreasing DTOC and VFAs production.Moreover,the increase in molecular weight of organics and organic nitrogen content in the supernatant after acidification suggested that the refractory protein in WAS increased as sludge age extended.Although the production of C2,C3,C4,and C5 from WAS decreased as the sludge age increased,the proportions of C2 and C3 in VFAs increased,which might be due to the declined production of C5 from protein and the faded genus Dechlorobacter.Keeping sludge age of WAS at a relatively low level (<10 days) is more appropriate for anaerobic acidification of WAS as internal carbon sources and P resource. | Sisi Chen Xiaohu Dai Dianhai Yang Bin Dong | 2021 | Journal of Environmental Sciences2021，33，7： | 2 |
| 4 | The effect of pH on anaerobic fermentation of primary sludge at room temperature 显示文摘 | WU Haiyan YANG Dianhai ZHOU Qi | 2009 | Journal of Hazardous Materials2009，172，1： | 1 |
| 5 | The effect of pH on anaerobic fermentation of primary sludge at room temperature显示文摘 | Wu Haiyan Yang Dianhai Zhou Qi | | 0，，01： | 1 |
| 6 | Bicycle Conversion Factor Calibration at Two-phase Intersection of Mixed Traffic显示文摘 | Liang Chunyan Jing Chunguang and Wang Guohua | 2007 | Journal of Tsinghua Science &Technology2007，12，3： | 1 |
| 7 | Alkaline fermentation of primary sludge for short-chain fatty acids accumulation and mechanism 显示文摘 | WU Haiyan GAO Junyan YANG Dianhai | 2010 | Chemical Engineering Journal2010，160，1： | 1 |
| 8 | P33 of Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus is a functional homolog of AcP33显示文摘Dear Editor,Baculoviruses are insect-specific viruses with a circular double-stranded DNA genome ranging in size from80–180 kb(Lu et al.,2012).Two distinct types of virions have been identified during the infectious cycle of baculoviruses,namely budded virions(BVs)and occlusion-derived virions(ODVs).BVs mediate infection from cell to cell,while ODVs initiate oral infection in the insect midgut(Braunagel and Summers,2007). | Wenhua Kuang Huanyu Zhang Dianhai Hou Manli Wang Fei Deng Hualin Wang Zhihong Hu | 2016 | Virologica Sinica2016，31，4： | 1 |
| 9 | Achieving robust nitritation in a modified continuous-flow reactor: From micro-granule cultivation to nitrite-oxidizing bacteria elimination显示文摘In this study,a modified continuous-flow nitrifying reactor was successfully operated for rapid cultivation of micro-granules and achieving robust nitritation.Results showed that sludge granulation with mean size of ca.100μm was achieved within three weeks by gradually increasing settling velocity-based selection pressure from 0.48 to 0.9 m/hr.Though Nitrospira like nitrite-oxidizing bacteria(NOB)were enriched in the micro-granules with a ratio between ammonia-oxidizing bacteria(AOB)and NOB of 5.7%/6.5% on day 21,fast nitritation was achieved within one-week by gradually increasing of influent ammonium concentration(from 50 to 200 mg/L).Maintaining ammonium in-excess was the key for repressing NOB in the micro-granules.Interestingly,when the influent ammonium concentration switched back to 50 mg/L still with the residual ammonium of 15–25 mg/L,the nitrite accumulation efficiency increased from 90%to 98%.Experimental results suggested that the NOB repression was intensified by both oxygen and nitrite unavailability in the inner layers of micro-granules.Unexpectedly,continuous operation with ammonium in excess resulted in overproduction of extracellular polysaccharides and overgrowth of some bacteria(e.g.,Nitrosomonas,Arenimonas,and Flavobacterium),which deteriorated the micro-granule stability and drove the micro-granules aggregation into larger ones with irregular morphology.However,efficient nitritation was stably maintained with extremely high ammonium oxidation potential(>50 mg/g VSS/hr)and nearly complete washout of NOB was obtained.This suggested that smooth and spherical granule was not a prerequisite for achieving NOB wash-out and maintaining effective nitritation in the granular reactor.Overall,the microgranules exhibited a great practical potential for high-rate nitritation. | Wenru Liu Jiajun Song Jianfang Wang Xiaoming Ji Yaoliang Shen Dianhai Yang | 2023 | Journal of Environmental Sciences2023，，2： | 1 |
| 10 | Toxicity evaluation and prediction of toxic chemicals on activated sludge system 显示文摘 | CAI Bijing LI Xie YANG Dianhai | 2010 | Journal of Hazardous Materials2010，177，123： | 1 |
| 11 | The Prediction of the Ownerships of Chinese Motor Vehicle | YANG Zhaosheng WANG Dianhai Jilin University of Technology, Changchun, 130025, China | 1997 | Systems Science and Systems Engineering1997，7，1： | 1 |
| 12 | A Method of Signal Timing Optimization for Spillover Dissipation in Urban Street Networks显示文摘 | Dongfang Ma Dianhai Wang Yiming Bie Sun Di Wudhichai Assawinchaichote | 2013 | Mathematical Problems in Engineering2013，，： | 1 |
| 13 | Modeling Car-Following Dynamics During the Starting and Stopping Process Based on Spring System Model 显示文摘 | WANG DIANHAI YANG SHAOHUI CHU LIANYU | 2004 | Tsinghua Science and Technology December2004，9，6： | 1 |
| 14 | Non lane based full velocity difference car following model显示文摘 | JIN Sheng WANG Dianhai TAO Pengfei | 2010 | Physica A2010，389，21： | 1 |
| 15 | Genome Characteristics of the Cyclophragma Undans Nucleopolyhedrovirus: A Distinct Species in Group Ⅰ of Alphabaculovirus显示文摘The Cyclophragma undans nucleopolyhedrovirus(Cyun NPV), a potential pest control agent, was isolated from Cyclophragma undans(Lepidoptera: Lasiocampidae), an important forest pest. In the present study, we performed detailed genome analysis of Cyun NPV and compared its genome to those of other Group Ⅰ alphabaculoviruses. Sequencing of the Cyun NPV genome using the Roche 454 sequencing system generated 142,900 bp with a G + C content of 45%. Genome analysis predicted a total of 147 hypothetical open reading frames comprising 38 baculoviral core genes, 24 lepidopteran baculovirus conserved genes, nine Group Ⅰ Alphabaculovirus conserved genes, 71 common genes, and five genes that are unique to Cyun NPV. In addition, the genome contains 13 homologous repeated sequences(hrs). Phylogenetic analysis groups Cyun NPV under a distinct branch within clade ‘‘a'' of Group Ⅰ in the genus Alphabaculovirus. Unlike other members of Group Ⅰ, Cyun NPV harbors only nine of the 11 genes previously determined to be specific to Group Ⅰ viruses.Furthermore, the Cyun NPV lacks the tyrosine phosphatase gene and the ac30 gene. The Cyun NPV F-like protein contains two insertions of continuous polar amino acids, one at the conventional fusion peptide and a second insertion at the pretransmembrane domain. The insertions are likely to affect the fusion function and suggest an evolutionary process that led to inactivation of the F-like protein. The above findings imply that Cyun NPV is a distinct species under Group Ⅰ Alphabaculovirus. | Zheng Zhu Jun Wang Qianran Wang Feifei Yin Xiaoping Liu Dianhai Hou Lei Zhang Haizhou Liu Jiang Li Basil M. Arif Hualin Wang Fei Deng Zhihong Hu Manli Wang | 2018 | Virologica Sinica2018，33，4： | 0 |
| 16 | Correlation between travel experiences and post-COVID outbound tourism intention:a case study from China显示文摘The COVID-19 pandemic has devastated global tourism and recovery is proceeding very slowly.For many countries,tourism served as a major economic sector,so investigating how to recover is essential.As China was the largest source of outbound travelers before the outbreak,study of the factors influencing Chinese intentions to travel overseas in the post-COVID era is revealing.In Apr.2022,among seven provinces(or cities)with the most outbound tourists from 2019 to 2021,2450 individuals responded to a questionnaire on daily mobility,tourism experiences,and the shifts due to the pandemic.Light gradient boosting machine(LightGBM),a robust ensemble learning method,was adopted to quantify and visualize the impact of explanatory factors on outbound travel intention.In addition,the Optuna mechanism and Shapley additive explanation(SHAP)instruments were employed for tuning hyperparameters and interpreting results,respectively.Findings suggest neither one-day nor multi-day tours have resumed to pre-COVID levels.Higher frequency of multi-day tours with further destinations,less car utilization in daily shopping trips,and moderate pandemic restrictions can boost the intention to travel abroad.The concerns and desires of different age groups for overseas travel need different responses.This study reveals the factors affecting Chinese outbound travel intentions and provides suggestions for the recovery of tourism in the post-COVID period. | Yilin SUN Yinan DONG Dianhai WANG EOwen DWAYGOOD Hamed NASERI Kazuo NISHII | 2023 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2023，24，11： | 0 |
| 17 | Investigation on Noise Pollution Comprehensive Treatment of Distribution Transformer in Living Area显示文摘In the current paper,which deals with the noise pollution excited by distribution transformers in the living area,a comprehensive treatment scheme is put forward for the purpose of reducing the sound pressure level emitting into the environment.In accordance with the associated test standard,the sound pressure levels of distribution transformer and surrounding environment are not only tested but analyzed as well.The measurements were carried out with the frequency analysis of the 1/3 octave resolution,with the center frequencies at 125 Hz,250 Hz,400 Hz,and 500 Hz.As illustrated,on the basis of the measurement results,the frequency of noise at 500 Hz of distribution transformer causes the major noise pollution in the surrounding environment.This measurement result is in line with the noise frequency characteristics of distribution transformer.There are two transmission routes of noise:(i)the noise excited by distribution transformer transmits by means of the wall of distribution room,and (ii)part of noise spreads through the ground of distribution room.Accordingly,acoustic shield and vibration isolation device are applied for the reduction of the low frequency noise emitted through the above two paths.Aimed at applying the appropriate acoustic material and vibration mounting,the evaluation of the noise reduction and vibration absorption is carried out in accordance with the sound and vibration insulation theory.Following the noise treatment,the transformer and environment noise are measured again.The corresponding findings shed light on the fact that the sound level satisfied the requirement of limits of the ordinance.The proposed noise treatment scheme can be applied to the existing power distribution facilities for controlling the sound levels that reach a point where it is comparatively more unobjectionable. | Li Li Xiaopeng Fan Kecheng Wu Zhuanglei Zou Yongyan Zhou Dianhai Zhang Ziyan Renand Yanli Zhang | 2019 | Sound & Vibration2019，53，6： | 0 |
| 18 | Identification of the Epitopes of Monoclonal Antibodies against P74 of Helicoverpa armigera Nucleopolyhedrovirus显示文摘P74 is a per os infectivity factor of baculovirus.Here,we report the production of three monoclonal antibodies (mAbs),denoted as 20D9,20F9 and 21E1,raised against P74 of Helicoverpa armigera nucleopolyhedrovirus (HearNPV),and the identification of their recognition epitopes.The full-length P74,without the transmembrane domains at the C-terminus,was first divided into three segments (N,M and C,respectively),based on the proposed cleavage model for the protein,which were then expressed individually.Western blot analyses revealed specific cross-reactions with the N fragment,for both 20D9 and 21E1.Extensive truncation,followed by prokaryotic expression,of the P74 N fragment was then performed in order to screen for linear epitopes of P74.The recognition regions of 20D9 and 21E1 were revealed to be localized at R144-T153 and T199-C219,respectively.In addition,immunofluorescence microscopy indicated that 20D9 and 20F9 could recognize native P74 in HearNPV-infected cells.These findings will facilitate further investigations of the proteolytic processing of HearNPV P74,and of its involvement in virus-host interactions. | Limin Liao Dianhai Hou Huachao Huang Manli Wang Fei Deng Hualin Wang Zhihong Hu Tao Zhang | 2013 | Virologica Sinica2013，28，6： | 0 |
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