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| 1 | Nitrous oxide reductase gene (nosZ) and N_2O reduction along the littoral gradient of a eutrophic freshwater lake显示文摘Lake littoral zones are characterized by heterogeneity in the biogeochemistry of nutrient elements. This study aimed to explore the relationship between the nitrous oxide reductase gene (nosZ)-encoding denitrifier community composition/abundance and N2O reduction. Five samples (deep sediment, near-transition sediment, transition site, near-transition land and land soil) were collected along a littoral gradient of eutrophic Baiyangdian Lake, North China. To investigate the relationship between the nosZ-encoding denitrifier community structure and N2O reduction, the nosZ-encoding denitrifier community composition/abundance, potential denitrification rate (DNR) and potential N2O production rate (pN2O) were investigated using molecular biological technologies and laboratory incubation experiments. The results showed that the average DNR of sediments was about 25 times higher than that of land soils, reaching 282.5 nmol N/(g dry weight (dw)·hr) and that the average pN2O of sediments was about 3.5 times higher than that of land soils, reaching 15.7 nmol N/(g dw·hr). In the land area, the nosZ gene abundance showed a negative correlation with the N2O/(N2O+N2) ratio, indicating that nosZ gene abundance dominated N2O reduction both in the surface soils of the land area and in the soil core of the transition site.Phylogenetic analysis showed that all the nosZ sequences recovered from sediment clustered closely with the isolates Azospirillum largimobile and Azospirillum irakense affiliated to Rhodospirillaceae in alpha-Proteobacteria, while about 92.3% (12/13) of the nosZ sequences recovered from land soil affiliated to Rhizobiaceae and Bradyrhizobiaceae in α-Proteobacteria. The community composition of nosZ gene-encoding denitrifiers appeared to be coupled with N2O reduction along the littoral gradient. | Chaoxu Wang Guibing Zhu Yu Wang Shanyun Wang Chengqing Yin | 2013 | Journal of Environmental Sciences2013，25，1： | 8 |
| 2 | Robustness of anammox granular sludge treating low-strength sewage under various shock loadings:Microbial mechanism and little N2O emission显示文摘With the increasing application of anammox for the treatment of high-strength industrial wastewater,application of anammox in municipal sewage has been gaining more attention.Sludge granulation in particular enhances the enrichment and retention of anammox bacteria in municipal sewage treatment systems.However,the performance of granular sludge under continuous and varying hydraulic loading shock remains little understood.In this study,the robustness of anammox granular sludge in treating lowstrength municipal sewage under various shock loadings was investigated.Results showed that an upflow anaerobic sludge blanket(UASB)reactor with anammox granules performed well,with anammox specific activity up to 0.28 kg N/kg VSS/day and anti-loading shock capability up to 187.2 L/day during the 8-month testing period.The accumulation rate of N2O(<0.01 kg N/kg VSS/day)in the liquid phase was seven times higher than that of the gas phase,which could be mainly attributed to the incomplete denitrification and insufficient carbon source.However,only a small part of the produced N2O escaped into the atmosphere.High-throughput sequencing and molecular ecological network analyses also identified the bacterial diversity and community structure,indicating the potential resistance against loading shock.The composition and structural analyses showed that polysaccharides were an important functional component in the tightly bound extracellular polymeric substances(TB-EPS),which was the major EPS layer of anammox granules.Scanning electron microscopy(SEM)also showed that the gaps in between the anammoxclusters in the granules inhibit the flotation of the sludge and ensure efficient settling and retention of anammox granules. | Shanyun Wang Guibing Zhu Yifei Li Xiaoxia Wang Jiemin Zhou Yongzhen Peng | 2019 | Journal of Environmental Sciences2019，31，12： | 4 |
| 3 | THz Channel Modeling: Consolidating the Road to THz Communications显示文摘For the sake of meeting the demand of data rates at terabit(Tbit)per second scale in future networks,the terahertz(THz)band is widely accepted as one of the potential key enabling technologies for next generation wireless communication systems.With the progressive development of THz devices,regrading THz communications at system level is increasing crucial and captured the interest of plenty of researchers.Within this scope,THz channel modeling serves as an indispensable and fundamental element.By surveying the latest literature findings,this paper reviews the problem of channel modeling in the THz band,with an emphasis on molecular absorption loss,misalignment fading and multipath fading,which are major influence factors in the THz channel modeling.Then,we focus on simulators and experiments in the THz band,after which we give a brief introduction on applications of THz channel models with respects to capacity,security,and sensing as examples.Finally,we discuss some key issues in the future THz channel modeling. | Shanyun Liu Xianbin Yu Rongbin Guo Yajie Tang Zhifeng Zhao | 2021 | China Communications2021，18，5： | 2 |
| 4 | Performance of anammox UASB reactor treating low strength wastewater under moderate and low temperatures显示文摘 | Bin Ma Yongzhen Peng Shujun Zhang Junmin Wang Yiping Gan Jiang Chang Shuying Wang Shanyun Wang Guibing Zhu | 2012 | Bioresource Technology2012，，： | 1 |
| 5 | Flame-retardant and smokesuppressant properties of zinc borate and alumimum trihydrate-filled rigid PVC显示文摘 | Yong Ning Shanyun Guo | 2000 | J Appl Polym Sci2000，，77： | 1 |
| 6 | Quantita- tive analyses of ammonia-oxidizing Archaea and bacteria in the sediments of four nitrogen-rich wetlands in China 显示文摘 | Wang Shanyun Wang Yu Feng Xiaojuan | 2011 | Applied Microbiology and Biotechnology2011，90，： | 1 |
| 7 | Self-assembly nanomicelles based on cationic mPEG-PLA-b-Polyarginine(R15) triblock copolymer for siRNA delivery显示文摘 | Zhao ZhiXia Gao ShanYun Wang JianCheng | 2012 | Biomaterials2012，33，28： | 1 |
| 8 | Prospects and Challenges of THz Precoding显示文摘Terahertz(THz) communications are considered as very promising for the sixth-generation(6 G) ultra-dense wireless networks. However, THz signals suffer from well-known severe path loss, which consequently shortens the coverage of THz communication systems. To deal with this issue, precoding technique is expected to be beneficial to extend the limited coverage by providing directional beams with ultra large number of antenna arrays. In this paper, we overview the state-ofthe-art developments of THz precoding techniques such as reconfigurable intelligent surface based precoding, hybrid digital-analog precoding and delay-phase precoding. Based on the survey, we summarize several open issues remaining to be addressed, and discuss the prospects of a few potential research directions on THz precoding, such as one-bit precoding, precoding for hardware impairments and THz security precoding. This overview will be helpful for researchers to study innovative solutions of THz precoding in the future 6 G wireless communications. | GUO Rongbin TANG Yajie ZHANG Changming LIU Shanyun ZHAO Zhifeng | 2022 | Chinese Journal of Electronics2022，31，3： | 0 |
| 9 | Introduction of CMCD in Deepwater显示文摘Overview of CMCD CMCD here refers to the one of Manage Pressure Drilling (MPD). Application of CMCD in deepwater is closely related with the development of marine riser and subsea BOP. LRRS includes high pressure marine riser, split BOP and mud-lift pump. CMCD can achieve the control of bottom hole pressure efficiently through LRRS. CMCD with LRRS has some distinguished advantages in deepwater drilling such as reduction of platform load, | Zhou Chuan Li Shanyun Zhang Haikuan Wang Yanfeng Chi Yu Xie Li | 2009 | China Oil & Gas2009，16，2： | 0 |
| 10 | Effect of tillage state of paddy soils with heavy metal pollution on the nosZ gene of N_(2)O reductase显示文摘Paddy soils are an important source of atmospheric nitrous oxide(N_(2)O).However,numerous studies have focused on N_(2)O production during the soil tillage period,neglecting the N_(2)O production during the dry fallow period.In this study,we conducted an incubation experiment using the acetylene inhibition technique to investigate N_(2)O emission and reduction rates of paddy soil profiles(0-1 m)from Guangdong Province and Jinlin Province in China,with different heavy-metal pollution levels.The abundance and community structures of denitrifying bacteria were determined via quantitative-PCR and Illumina MiSeq sequencing of nosZ,nirK,and nirS genes.Our results showed that the potential N_(2)O emission rate,N_(2)O production rate,and denitrification rate have decreased with increasing soil vertical depth and heavy-metal pollution.More importantly,we found that the functional gene type of N_(2)O reductase switched with the tillage state of paddy soils,which cladeⅡnos Z genes were the dominant gene during the tillage period,while cladeⅠnos Z genes were the dominant gene during the dry fallow period.The heavy-metal pollution has less effect on the niche differentiation of the nos Z gene.The N_(2)O emission rate was significantly regulated by the genus Bradyhizobium,which contains both N_(2)O reductase and nitrite reductase genes.Our findings suggests that the nos Z gene of N_(2)O reductase can significantly impact the N_(2)O emission from paddy soils. | Liping Jiang Shiguang Liu Shanyun Wang Libo Sun Guibing Zhu | 2024 | Journal of Environmental Sciences2024，，3： | 0 |
| 11 | Blockchain Data Analysis from the Perspective of Complex Networks:Overview显示文摘Cryptocurrency based on blockchain technology has gradually become a choice for people to invest in,and several users have participated in the accumulation of massive transaction data.Complete transaction records in blockchains and the openness of data provide researchers with opportunities to mine and analyze data in blockchains.Network modeling and analysis of cryptocurrency transaction records are common methods in blockchain data analysis.The analysis of attribute graphs can provide insights into various economic indicators,illegal activities,and general Internet security,among others.Accordingly,this article aims to summarize and analyze the literature on cryptocurrency transaction data from the perspective of complex networks.To provide systematic guidance for researchers,we put forward a blockchain data analysis framework based on the introduction of the relevant background and reviewed the work from five aspects:blockchain data model,data acquisition on blockchains,existing analysis tools,available insights,and common analysis methods.For each aspect,we introduce the research problems,summarize the methods,and discuss the results and findings.Finally,we present future research points and several open questions in the study of cryptocurrency transaction networks. | Wanshui Song Wenyin Zhang Jiuru Wang Linbo Zhai Pengkun Jiang Shanyun Huang Bei Li | 2023 | Tsinghua Science and Technology2023，28，1： | 0 |
| 12 | Study on the benef its of meteorological services for industries in China显示文摘It is very important to analyze and evaluate the benefi ts of meteorological services for policy decision-making and taking precautions against meteorological disasters.In this study,a model for evaluating the benef its of meteorological services for industries is constructed,with the combining method of dose-response and contingency assessment,and also absorbing other countries' experience.According to this model,and referring to the practical value of the contribution of meteorological services to typical enterprises,experts calculated the benef its of meteo-rological services for every industry.By applying this model,and taking the evaluation framework of 'to determine which industries are meteorology-sensitive' - 'to evaluate the benefi ts of meteorological services' - 'to get the total benef its of meteorological service',evaluation and analysis on the total benef its of meteorological services was done with case study.According to this study,the annual mean benef its of meteorological services are known as no less than 279.3 billion yuan(cost excluded) in present national economical environment. | Zhang Tairen Song Shanyun Tian Cuiying Zhao Rui Chai Xiumei Pan Shuangdi Li Zizhen | 2008 | Ecological Economy2008，4，4： | 0 |
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