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| 1 | A distributed scheme developed for eco-hydrological modeling in the upper Heihe River显示文摘Modeling the hydrological processes at catchment scale requires a flexible distributed scheme to represent the catchment topography,river network and vegetation pattern.This study has developed a distributed scheme for eco-hydrological simulation in the upper Heihe River.Based on a 1 km×1 km grid system,the study catchment is divided into 461 sub-catchments,whose main streams form the streamflow pathway.Furthermore,a 1 km grid is represented by a number of topographically similar'hillslope-valley'systems,and the hillslope is the basic unit of the eco-hydrological simulation.This model is tested with a simplified hydrological simulation focusing on soil-water dynamics and streamflow routing.Based on a 12-year simulation from 2001 to 2012,it is found that variability in hydrological behavior is closely associated with climatic and landscape conditions especially vegetation types.The subsurface and groundwater flows dominate the total river runoff.This implies that the soil freezing and thawing process would significantly influence the runoff generation in the upper Heihe basin.Furthermore,the runoff components and water balance characteristics vary among different vegetation types,showing the importance of coupling the vegetation pattern into catchment hydrological simulation.This paper also discusses the model improvement to be done in future study. | YANG DaWen GAO Bing JIAO Yang LEI Hui Min ZHANG YanLin YANG HanBo CONG ZhenTao | 2015 | Science China Earth Sciences2015，58，1： | 20 |
| 2 | Effects of ferrous and manganese ions on anammox process in sequencing batch biofilm reactors显示文摘Ferrous and manganese ions, as essential elements, significantly affect the synthesis of Haem-C, which participates in the energy metabolism and proliferation of anammox bacteria. In this study, two identical sequencing batch biofilm reactors were used to investigate the effects of ferrous and manganese ions on nitrogen removal efficiency and the potential of metal ions serving as electron donor/acceptors in the anammox process. Fluorescence in situ hybridization analysis was applied to investigate the microbial growth. Results showed that the nitrogen removal increased at high concentrations of Fe2+and Mn2+and the maximum removal efficiency was nearly 95% at Fe2+ 0.08 mmol/L and Mn2+0.05 mmol/L, which is nearly 15% and 8% higher than at the lowest Fe2+ and Mn2+concentrations(0.04 and 0.0125 mmol/L). The stabilities of the anammox reactor and the anammox bacterial growth were also enhanced with the elevated Fe2+and Mn2+concentrations. The Fe2+and Mn2+were consumed by anammox bacteria along with the removal of ammonia and nitrite. Stoichiometry analysis showed Fe2+could serve as an electron donor for NO-3-N in the anammox process. Nitrate could be reduced with Fe2+serving as the electron donor in the anammox system, which causes the value of NO-2-N/NH+ 4-N to decrease with the increasing of N-removal efficiency. | Xiaoli Huang Dawen Gao Sha Peng Yu Tao | 2014 | Journal of Environmental Sciences2014，26，5： | 13 |
| 3 | Research progress of gut flora in improving human wellness显示文摘Human wellness is the ultimate goal of our efforts in improving the human life.Special foods are undoubtedly important in achieving human wellness.However,overeating significantly leads to obesity and diabetes.These chronic diseases will in turn affect the human wellness.Therefore,“dietary restriction and proper exercise”were introduced in the human daily life.Different foods cause various effects on the human health.The diversification of diet is a priority for nutritionists to keep our body healthy.To avoid diabetes mellitus,special foods for ketogenic diet,low-carbon diet,and low-calorie intake are also gradually attracting attention.In addition,the hypothesis that“hunger sensation comes from gut flora”brings new light to the research on the biological motivation for humans to eat food.This hypothesis has been gradually demonstrated using the flexible fasting technology by providing special foods,such as plant polysaccharides and dietary fibers.The response to food-needing signals from the gut flora to these foods demonstrates the importance of the gut flora in improving human wellness.The gut flora is probably an essential factor for translating the food-eating signals and converting the nutrition to our body.Therefore,“gut flora priority principle”is developed to guarantee human wellness.The 16S rRNA sequencing and mass spectrometric techniques can be used to identify the gut flora,which may guide us to a new era of human wellness based on gut flora wellness. | Chenggang Zhang Wenjing Gong Zhihui Li Dawen Gao Yan Gao | 2019 | Food Science and Human Wellness2019，8，2： | 8 |
| 4 | Seasonal variations in the concentration and removal of nonylphenol ethoxylates from the wastewater of a sewage treatment plant显示文摘In this study, we investigated the occurrence and fate of nonylphenol(NP), nonylphenol monoethoxylate(NP1EO) and nonylphenol diethoxylate(NP2EO) in a full scale sewage treatment plant, which applied an Anaerobic/Oxic process. Concentrations of NP, NP1 EO and NP2 EO in the wastewater were measured during the period spanning a whole year.The results showed remarkable seasonal variation in the concentrations of the compounds.The NPn EO compounds were most abundant in winter, with the total concentrations of influent NP, NP1 EO and NP2 EO ranging from 3900 to 7000 ng/L, 4000 to 4800 ng/L and 5200 to 7200 ng/L, respectively. Regarding the total removal efficiencies of the three types of short-chain NPn EO compounds, different trends were exhibited according to different seasons. The average removal efficiency of NP for the different seasons ranked as follows:winter > summer > autumn > spring; NP2 EO concentrations decreased as follows: summer >autumn > winter > spring, while NP1 EO concentrations reduced according to: spring >summer > autumn > winter. We also investigated the contribution ratio of individual treatment units in the A/O process, with the findings suggesting that the anaerobic treatment unit plays an important role in the elimination of short-chain NPn EOs from the wastewater. | Dawen Gao Zhe Li Junxue Guan Hong Liang | 2017 | Journal of Environmental Sciences2017，29，4： | 6 |
| 5 | Anaerobic ammonia oxidizing bacteria: ecological distribution, metabolism, and microbial interactions显示文摘 | Dawen Gao Xiaolong Wang Hong Liang Qihang Wei Yuan Dou Longwei Li | 2018 | Frontiers of Environmental Science & Engineering2018，12，3： | 5 |
| 6 | Current molecular biologic techniques for characterizing environmental microbial community显示文摘因为他们维持自然平衡的庞大的数字和本能功能,微生物对地球重要。因为微生物学超过一个世纪以前在环境科学和工程被使用,研究人员们有关微生物引起的时间空间的变化为越来越多的信息需要在几乎,到废水处理的从污染土壤的每块地种(WWTP ) 。为过去的 30 年,为环境微生物引起的社区(EMC ) 探索的分子的生物学的技术跨越了大量途径与计算机科学的帮助便于研究:更快、更精确、更敏感。在这篇特征文章,我们详细构画出在 EMC 的察觉使用的几种当前、新兴的分子的生物学的技术,并且介绍并且估计三个有希望的工具的申请。 | Dawen GAO Yu TAO | 2012 | Frontiers of Environmental Science & Engineering2012，6，1： | 2 |
| 7 | Occurrence and fate of typical antibiotics in wastewater treatment plants in Harbin, North-east China显示文摘As a new pollutant, antibiotics in the environment and their removal in wastewater treatment plants (WWTPs) have gained considerable attention. However, few studies investigated antibiotics in the north-eastern areas of China. By employing high-performance liquid chromatography-tandem mass spectrometry, the concentration distribution and removal of 12 antibiotics belonging to four types (cephalosporins, sulfonamides, fluoroquinolones, and macrolides) were investigated in influents and effluents as well as the removal efficiencies of four typical treatment processes in 18 wastewater treatment plants of Harbin City, north-eastem China. Macrolides and fluoroquinolones presented relatively higher detection concentrations and rates both in the water and in the sludge phases. Sulfonamides and cephalosporins displayed higher detection concentrations in the water phase. The representative antibiotics in influents and effluents included ROX, NOR, OFL, SMX, AZI, and CLA, with detection rates above 95%. The detection rates of the other six antibiotics exceeded 30%. In the sludge, the other five antibiotics, except SMX, presented relatively higher detection concentrations and rates, with detection rates greater than 95%. For cephalosporin, the detection rates of CTX and CFM in the sludge were 0. The removal efficiencies for the 12 antibiotics differed greatly, with average values ranging from 30% to 80% and the highest values for cephalosporin. The removal of antibiotics did not differ significantly among the four different treatment processes. | Weihua Wang Wanfeng Zhang Hong Liang Dawen Gao | 2019 | Frontiers of Environmental Science & Engineering2019，13，3： | 2 |
| 8 | N_2O emission from nitrogen removal via nitrite in oxic-anoxic granular sludge sequencing batch reactor显示文摘Bionitrification is considered to be a potential source of nitrous oxide(N2O) emissions, which are produced as a by-product during the nitrogen removal process. To investigate the production of N2O during the process of nitrogen removal via nitrite, a granular sludge was studied using a labscale sequence batch reactor operated with real-time control. The total production of N2O generated during the nitrification and denitrification processes were 1.724 mg/L and 0.125 mg/L, respectively, demonstrating that N2O is produced during both processes, with the nitrification phase generating larger amount. In addition, due to the N2O-N mass/oxidized ammonia mass ratio, it can be concluded that nitrite accumulation has a positive influence on N2O emissions. Results obtained from PCRDGGE analysis demonstrate that a specific Nitrosomonas microorganism is related to N2O emission. | Hong Liang Jiaoling Yang Dawen Gao | 2014 | Journal of Environmental Sciences2014，26，3： | 2 |
| 9 | Versatility and application of anaerobic ammonium-oxidizing bacteria 显示文摘 | GAO Dawen TAO Yu | 2011 | Applied Microbiology and Bioteehnology2011，91，： | 1 |
| 10 | Shortcut nitrification-denitrification by real-time control strategies 显示文摘 | Gao Dawen Peng Yongzhen Li Baikun | 2009 | Bioresource Technology2009，100，7： | 1 |
| 11 | Reactivation performance of aerobic granules under different storage strategies显示文摘 | Dawen Gao Xiangjuan Yuan Hong Liang | 2012 | Water Research2012，，10： | 1 |
| 12 | Community diversity and distribution of ammonia-oxidizing archaea in marsh wetlands in the black soil zone in North-east China显示文摘Since its first detection, ammonia-oxidizing archaea (AOA) have been proven to be ubiquitous in aquatic and terrestrial ecosystems. In this study, two freshwater marsh wetlands- the Honghe wetland and Qixinghe wetland - in the black soil zone in North-east China were chosen to investigate the AOA community diversity and distribution in wetland soils with different vegetation and depth. In the Honghe wetland, two sampling locations were chosen as the dominant plant transited from Deyeuxia to Carex. In the Qixinghe wetland, one sample location that was dominated by Deyeuxia was chosen. Samples of each location were collected from three different depths, and Illumina MiSeq platform was used to generate the AOA amoA gene archive. The results showed that the AOA amoA genes in the soils of the two wetlands were affiliated with three lineages: Nitrososphaera, Nitrosotalea, and Nitrosopumilus clusters. The different dominant status of these AOA lineages indicated their differences in adapting to acidic habitat, oxygenic/hypoxic alternation, organic matter, and other environmental factors, suggesting high diversity among AOA in marsh soils. The main driver of the AOA community was pH, along with organic carbon and ammonium nitrogen, which also played an important role combined with many other environmental factors. Thus, soil physiochemical characteristics, rather than vegetation, were the main cause of AOA community diversity in the wetlands in the black soil zone in China. | Chunhong Chen Hong Liang Dawen Gao | 2019 | Frontiers of Environmental Science & Engineering2019，13，4： | 1 |
| 13 | Comparison between MBR and SBR on Anammox start-up process from the conventional activated sludge显示文摘 | Tao Wang Hanmin Zhang Dawen Gao Fenglin Yang Guangyi Zhang | 2012 | Bioresource Technology2012，，： | 1 |
| 14 | Impact of reactor configuration on anarnmox process start-up:MBR versus SBR 显示文摘 | Tao Yu Gao Dawen Fu Yuan | 2012 | Bioresource Technology2012，104，： | 1 |
| 15 | Enrichment of Anammox bacteria in seed sludges from different wastewater treating processes and start-up of Anammox process显示文摘 | Tao Wang Hanmin Zhang Dawen Gao Fenglin Yang Shuai Yang Tao Jiang Guangyi Zhang | 2010 | Desalination2010，，1： | 1 |
| 16 | Using ORP and pH Value for Process Control of Shortcut Nitrification-Denitrification显示文摘 | Gao Dawen Peng Yongzhen Wang Peng | 2003 | Journal of Environmental Science and Health(Part A)2003，38，12： | 1 |
| 17 | Fouling characteristics of a novel rotating tubular membrane bioreactor显示文摘 | Jiang Tao Zhang Hanmin Gao Dawen | 2012 | Chemical Engineering and Processing2012，62，： | 1 |
| 18 | Fouling characteristics of a novel rotating tubular membrane bioreactor 显示文摘 | Jiang Tao Zhang Hanmin Gao Dawen | 2012 | Chemical Engineering and Processing2012，62，6： | 1 |
| 19 | Effect of Zinc Doping on Microstructures and Gas-Sens-ing Properties of SnO2 Nanocrystals 显示文摘 | TIAN Shouqin GAO Yingri ZENG Dawen | 2012 | Journal of the American Ceramic Society2012，95，1： | 1 |
| 20 | A critical review of the application of white rot fungus ro enviro- mental pollution control显示文摘 | Dawen Gao Lina Du Jiaoling Yang | 2010 | Critical Reviews in biotech- nology2010，30，1： | 1 |
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