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| 1 | Analysis of bacterial community in bulking sludge using culture-dependent and -independent approaches显示文摘The bacterial community of a bulking sludge from a municipal wastewater treatment plant with anoxic-anaerobic-oxic process was investigated by combination of cultivation and 16S rRNA gene clone library analysis for understanding the causes of bulking.A total of 28 species were obtained from 63 isolates collected from six culture media.The most cultivable species belonged to γ-Proteobacteria including Klebsiella sp.,Pseudomonas sp.,Aeromonas sp.and Acinetobacter sp.Further analysis of these strains by repetitive sequence based on polymerase chain reaction (rep-PCR) technology showed that rep-PCR yielded discriminatory banding patterns within the same genus using REP and BOX primer sets.While the culture-independent assessment revealed that β-Proteobacteria was the dominant group in the bulking sample.Sequence analysis revealed that the highest proportion (14.7%) of operational taxonomic units was 98% similar to Candidatus Accumulibacter phosphatis,which is used to remove phosphorous from wastewater.Our results indicated that combining different approaches can produce complementary information,thus generate a more accurate view of microbial community in bulking sludge. | Decai Jin Ping Wang Zhihui Bai Xinxin Wang Hong Peng Rong Qi Zhisheng Yu Guoqiang Zhuang | 2011 | Journal of Environmental Sciences2011，23，11： | 11 |
| 2 | Numerical and experimental study of magnetic fluid seal with large sealing gap and multiple magnetic sources显示文摘To improve the pressure capability of magnetic fluid seal with more than a 0.25 mm single edge gap,a magnetic fluid sealing structure with multiple magnetic sources which has five permanent magnets was designed.Magnetic field distributions under the pole pieces of the magnetic fluid seal with single and multiple magnetic sources were simulated by finite element method and its sealing pressure difference could be calculated according to the theoretical formula of the magnetic fluid seal.The effects of sealing gap height and magnetic source amount on the sealing capability were investigated experimentally.The theoretical and experimental results were compared,analyzed and discussed.The results demonstrated that the magnetic fluid seal with multiple magnetic sources was an effective method to improve the sealing capability for the rotary shaft with large gaps.The theoretical results agreed well with the experimental results when the height of the single edge gap was equal to 0.4 mm.However,it was found that when the height of the single edge gap was larger than 0.4 mm,the difference between the theoretical values and experimental values increased with the gap height because part of magnetic source had less or even no effect on magnetic fluid sealing capability. | YANG XiaoLong ZHANG ZhiLi LI DeCai | 2013 | Science China(Technological Sciences)2013，56，11： | 10 |
| 3 | Community assemblage of free-living diazotrophs along the elevational gradient of Mount Gongga显示文摘Mountain systems are unique for studying the responses of species distribution and diversity to environmental changes along elevational gradients.It is well known that free-living diazotrophic microorganisms are important to nitrogen cycling in mountain systems.However,the elevational patterns of free-living diazotrophs and the underlying ecological processes in controlling their turnover along broader gradients are less well documented.Here,we investigated the pattern of diazotrophic diversity along the elevational gradient(1800 m-4100 m)in Mount Gongga of China.The results showed that the α-diversity of diazotrophs did not change with the elevation from 1800 m to 2800 m,but decreased at elevations above 3000 m.Such diversity pattern was driven mainly by soil total carbon,nitrogen,and plant richness.Various diazotrophic taxa showed differential abundance-elevation relationships.Ecological processes determining diazotrophic community assemblage shift along the elevations.Deterministic processes were relatively stronger at both low and high elevations,whereas stochastic processes were stronger at the middle elevation.This study also suggested a strong relationship among aboveground plants and diazotrophs,highlighting their potential interactions,even for free-living diazotrophs. | Yansu Wang Chaonan Li Zehao Shen Junpeng Rui Decai Jin Jiabao Li Xiangzhen Li | 2019 | Soil Ecology Letters2019，1，3： | 8 |
| 4 | Selection of real earthquake accelerograms for structural dynamic analysis and energy evaluation显示文摘Real earthquake accelerograms are used in structural dynamic analysis.The criteria for record database establishment,record screening,selection principle,scaling adjustment,and sampling size are discussed in the present paper.An optimized selection method using coupled genetic and greedy algorithms is proposed,and energy input characteristics for the records which are selected only through matching acceleration design spectrum are analyzed.Using the proposed method,the mean and target spectra can reach a good agreement within a period range of interest.The dispersion among the response spectra of the different records is small,and the tolerance of the spectrum value corresponding to each period in the important period scope can be controlled more strictly than the specified limit.If the structural cumulative damage or structures with energy-dissipation components are considered,the records selected using the method that only match the acceleration design spectrum are not applicable.In this case,the selection method that considers the energy input demand is recommended. | YE XianGuo WANG DeCai | 2011 | Science China(Technological Sciences)2011，54，11： | 7 |
| 5 | Rational design of MoS_(2) nanosheets decorated on mesoporous hollow carbon spheres as a dual-functional accelerator in sulfur cathode for advanced pouch-type Li–S batteries显示文摘Developing sulfur cathodes with high catalytic activity on accelerating the sluggish redox kinetics of lithium polysulfides(Li PSs) and unveiling their mechanisms are pivotal for advanced lithium–sulfur(Li–S)batteries. Herein, MoS2 is verified to reduce the Gibbs free energy for rate-limiting step of sulfur reduction and the dissociation energy of lithium sulfide(Li2 S) for the first time employing theoretical calculations. The Mo S2 nanosheets coated on mesoporous hollow carbon spheres(MHCS) are then reasonably designed as a sulfur host for high-capacity and long-life Li–S battery, in which MHCS can guarantee the high sulfur loading and fast electron/ion transfer. It is revealed that the shuttle effect is efficiently inhibited because of the boosted conversion of Li PSs. As a result, the coin cell based on the MHCS@Mo S2-S cathode exhibits stable cycling performance maintaining 735.7 mAh g^(-1) after 500 cycles at 1.0 C. More importantly, the pouch cell employing the MHCS@Mo S2-S cathodes achieves high specific capacity of1353.2 m Ah g^(-1) and prominent cycle stability that remaining 960.0 m Ah g^(-1) with extraordinary capacity retention of 79.8% at 0.1 C after 170 cycles. Therefore, this work paves a new avenue for developing practical high specific energy and long-life pouch-type Li–S batteries. | Qinjun Shao Pengfei Lu Lei Xu Decai Guo Jing Gao Zhong Shuai Wu jian Chen | 2020 | Journal of Energy Chemistry2020，29，12： | 7 |
| 6 | A study on the uncertainties of the centroid depth of the 2013 Lushan earthquake from teleseimic body wave data显示文摘Centroid depth of earthquakes is essential for seismic hazard mitigation.But,various studies provided different solutions for the centroid depth of the damaging2013 Lushan earthquake,thus hindering further studies of the earthquake processes.To resolve its centroid depth and assess the uncertainties,we apply the teleseismic cut and paste method to invert for centroid depth with teleseismic body waves in the epicentral distance of 30°–90°.We performed the inversion for P waves only as well the case of both P and SH waves and found that both cases lead to depth solutions with difference less than 0.5 km.We also investigated the effects on depth inversion from azimuth gap of seismic stations,source duration,and corner frequency of filter.These various tests show that even azimuthal distribution of seismic stations is helpful for accurate depth inversion.It is also found that estimate of centroid depth is sensitive to source duration.Moreover,the depth is biased to larger values when corner frequency of low-pass filter is very low.The uncertainty in the velocity model can also generate some error in the depth estimation(*1.0 km).With all the above factors considered,the centroid depth of Lushan earthquake is proposed to be around 12 km,with uncertainty about 2 km. | Weiwen Chen Decai Wang Shengji Wei | 2013 | Earthquake Science2013，26，3： | 6 |
| 7 | Collective Magnetic Behavior of Graphene Nanohole Superlattices显示文摘We predict a new class of 2-D crystalline“bulk”magnets-the graphene nanohole(GNH)superlattices with each GNH acting like a“super”magnetic atom,using first principles calculations.We show that such superlattices can exhibit long-range magnetic order above room temperature,with a collective magnetic behavior governed by inter-NH spin spin interactions in additional to intra-NH spin ordering.Furthermore,magnetic semiconductors can be made by doping magnetic NHs into semiconducting NH superlattices.The possibility of engineering magnetic GNHs for storage media and spintronics applications is discussed. | Decai Yu Elizabeth MLupton Miao Liu Wei Liu Feng Liu | 2008 | Nano Research2008，1，1： | 4 |
| 8 | Relationship between Refractive Error and Ocular Biometrics in Twin Children:the Guangzhou Twin Eye Study显示文摘Purpose:A cross-sectional study was conducted to explore the relationship between refractive error and ocular biometrics in children from the Guangzhou twin eye study.Methods:.Twin participants aged 7-15 years were selected from Guangzhou Twin Eye Study..Ocular examinations included visual acuity measurement, ocular motility evaluation, autorefraction under cycloplegia, and anterior segment, media, and fundus examination...Axial length(AL),..anterior cham ber depth(ACD), and corneal curvature radius were measured using partial coherence laser interferometry. A multivariate linear regression model was used for statistical analysis.Results:.Twin children from Guangzhou city showed a decreased spherical equivalent with age,.whereas both AL and ACD were increased and corneal curvature radius remained unchanged. When adjusted by age and gender, the data from77% of twins presenting with spherical equivalent changes indicated that these were caused by predictable variables.(R2=0.77, P<0.001). Primary factors affecting children's refraction included axial length(β=-0.97,P<0.001), ACD(β=0.33,P<0.001), and curvature radius(β=2.10,P<0.001). Girls had a higher tendency for myopic status than did boys(β=-0.26,P<0.001)..Age exerted no effect upon the changes in refraction(β=-0.01, P=0.25).Conclusion:.Refraction is correlated with ocular biometrics.Refractive status is largely determined by axial length as the major factor. | Decai Wang Bin Liu Shengsong Huang Wenyong Huang Mingguang He | 2014 | Eye Science2014，29，3： | 4 |
| 9 | A Unifi ed Geometric Rule for Designing Nanomagnetism in Graphene显示文摘Based on the underlying graphene lattice symmetry and an itinerant magnetism model on a bipartite lattice,we propose a unifi ed geometric rule for designing graphene-based magnetic nanostructures:spins are parallel(ferromagnetic(FM))on all zigzag edges which are at angles of 0°and 120°to each other,and antiparallel(antiferromagnetic(AF))at angles of 60°and 180°.The rule is found to be consistent with all the systems that have been studied so far.Applying the rule,we predict several novel graphene-based magnetic nanostructures:0-D FM nanodots with the highest possible magnetic moments,1-D FM nanoribbons,and 2-D magnetic superlattices. | Decai Yu Elizabeth M.Lupton H.J.Gao Chao Zhang Feng Liu | 2008 | Nano Research2008，1，6： | 4 |
| 10 | Theoretical and experimental study on magnetic-fluid-based flow sensors显示文摘The dependence of flow volume on the pressure difference between the ports of a U-tube was determined for both laminar and turbulent flows of a magnetic fluid.The results showed that the dependence was linear in the case of laminar flow but was non-linear in the case of turbulent flow.In addition,the inductance and the voltage difference across two coils around the arms of the U-tube were calculated.The voltage difference was proportional to the flow volume and inversely proportional to the square of the coil length.These theoretical and experimental results demonstrate that the design of magnetic-fluid-based flow sensors is feasible. | HAO RuiCan LI DeCai | 2011 | Chinese Science Bulletin2011，56，17： | 3 |
| 11 | New Method for Constructing Comparison Matrix Based on the Proportion Scales in the AHP显示文摘The main faults existing in current scale methods are that the scales do not represent the real importance of alternatives and their relations. This paper presents a proportion judgment scale and introduces a new method based on the proportion scale for construction comparison matrix in the analytic hierarchy process (AHP). The proportion judgment scales do not have the faults existing in current scale methods and the comparison matrix constructed by the new scale method does not need any consistency checking because it is always consistent. Not only can it greatly enhance the reliability and efficiency of decision-making of AHP but also make AHP more simple and convenient in practical use. | Huang Decai & Shen Liangzhong College of Informaton Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China | 2003 | Journal of Systems Engineering and Electronics2003，14，3： | 3 |
| 12 | Differential equation dynamical system based assessment model in GNSS interoperability显示文摘With the development of Global Navigation Satellite System (GNSS),the idea of GNSS interoperability is born and has become the focus of study in the field of satellite navigation.The popularity for GNSS to augment the interoperability with the existing ones necessitates the study of the assessment algorithm of this idea.In this paper,an assessment algorithm for interoperability comprehensive benefits based on the differential equation dynamical system is discussed.There are two important aspects in GNSS that interoperability will affect:one is the performance advancement;the other one is the cost of adopting interoperability.While researching the complex relationship between the performance and cost,we found this relationship is similar as what between prey and predator in biomathematics,so the Lotka-Volterra model used to depict the prey-predator relationship is a felicitous tool.After building a differential dynamical model,we analyze the existence and stability of the positive equilibrium in the model.Then a Cost-Effective Function of GNSS is constructed based on the positive equilibrium,which is employed to assess the interoperability,qualitatively and quantitatively.Finally,the paper demonstrates the significance of the model and its application by citing a numerical example. | HAN Tao LU XiaoChun WANG Xue RAO YongNan ZOU DeCai YANG JianFei WU YangYang | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，6： | 3 |
| 13 | A hybrid model for numerical wave forecasting and its implementation-Ⅱ .The discrete part and implementation of the model显示文摘In the first part of the present paper we have explained why we manage to formulate another wave prediction model when so many of them, including the so-called third generation model, have already been in use. The wind-wave part of the proposed model has also been given. Now we proceed to discuss the swell part,the implementation of the model as a prediction method,mumerical experiments done with ideal wind fields and hindcasts made in the Bohai Sea,in the neighboring seas adjacent to China and in the Northwest Pacific. | Zhang Dacuo, Wu Zengmao, Jiang Decai, Wang Wei, Chen Bohai, Tai Weitao, Wen Shengchang,Xu Qichun and Guo Peifang | 1992 | Acta Oceanologica Sinica1992，11，2： | 3 |
| 14 | Identification and characterization of tomato gibberellin 2-oxidases (GA2oxs) and effects of fruit-specific SlGA2ox1 overexpression on fruit and seed growth and development显示文摘Gibberellins(GAs)play a crucial role in growth and development of the tomato fruit.Previously published studies focusing on the effect of GAs on tomato fruits used chemical treatments,constitutive overexpression or silencing of GA biosynthetic and catabolic genes globally throughout the plant.Fruit-specific overexpression of GA catabolic enzyme genes GA2-oxidases(GA2oxs),however,may provide an alternative method to study the role of endogenous GAs on the fruit development.In this study,we have identified 11 SlGA2ox proteins in tomato that are classified into three subgroups.Motif analysis and multiple sequence alignments have demonstrated that all SlGA2oxs,except SlGA2ox10,have similar motif compositions and high-sequence conservation.Quantitative reverse transcription-PCR analysis has showed that SlGA2oxs exhibit differential expression patterns in tomato fruits at different developmental stages.When the fruit-specific promoter TFM7 was used to control the expression of SlGA2ox1,we observed no changes in growth and development of vegetative organs.However,fruit weight,seed number and germination rate were significantly affected.We also treated tomato fruits with GA biosynthesis inhibitor and observed phenotypes similar to those of the transgenic fruits.Furthermore,we have demonstrated that expression of cell expansion and GA responsive genes were downregulated in transgenic tomato fruits,supporting that overexpression of the SlGA2ox1 leads to reduction in endogenous GAs.This study provides additional evidence that endogenous GAs and the SlGA2ox1 gene play an important role in controlling on fruit weight,seed development and germination in tomato plant. | Shen Chen Xiaojing Wang Liying Zhang Shanshan Lin Decai Liu Quanzhi Wang Shanya Cai Rania El-Tanbouly Lijun Gan Han Wu Yi Li | 2016 | Horticulture Research2016，3，1： | 3 |
| 15 | A post-ingestive amino acid sensor promotes food consumption in Drosophila显示文摘 | Zhe Yang Rui Huang Xin Fu Gaohang Wang Wei Qi Decai Mao Zhaomei Shi Wei L. Shen Liming Wang | 2018 | Cell Research2018，28，10： | 3 |
| 16 | Low overhead design-for-testability for scan-based delay fault testing显示文摘An efficient design-for-testability (DFT) technique is proposed to achieve low overhead for scan-based delay fault testing. Existing techniques for delay test such as skewed-load or broadside make the test generation process complex and produce lower coverage for scan-based designs as compared with non-scan designs, whereas techniques such as enhanced-scan test can make the test easy but need an extra holding latch to add substantial hardware overhead. A new tri-state holding logic is presented to replace the common holding latch in enhanced-scan test to get a substantial low hardware overhead. This scheme can achieve low delay overhead by avoiding the holding latch on the critical timing scan path. What’s more, this method can also keep the state and signal activity in the combinational circuit from the scan during data scan-in operation to reduce the power dissipation. Experiment results on a set of ISCAS89 benchmarks show the efficiency of the proposed scheme. | Yang Decai Chen Guangju Xie Yongle | 2007 | Journal of Systems Engineering and Electronics2007，18，1： | 3 |
| 17 | Reconstruction Mode of Rural Dilapidated Houses in Alpine and Gorge Area of Southwest China——A Case Study of Scientific Identification and Precision Reconstruction of Rural Dilapidated Houses in Luquan County,Yunnan Province显示文摘The transformation of dilapidated houses in rural areas is not only a livelihood project related to the broad masses of rural people,but also a major project to win the battle against poverty. Luquan Yi and Miao Autonomous County,Yunnan Province,located in the high mountain and gorge area along Jinsha River,is one of the key counties of poverty alleviation and development with a wide range of poverty and a deep degree of poverty. The incidence of poverty is 22. 21%. Housing security is the focus,difficulty and emphasis of poverty alleviation in this county,the number of dilapidated houses is large,the type is complex,the transformation is difficult,and the implementation cost is high.Since the beginning of 2017,Luquan County has faced difficulties,explored in depth,pioneered and innovated,and completed the renovation of 54 801 dilapidated houses in an all-round way. It created a road full of characteristics and effectiveness of rural dilapidated housing transformation,and explored a set of effective scientific identification and accurate transformation models for rural dilapidated housing worthy of reference and promotion. Successful renovation of dilapidated houses,combined with industrial poverty alleviation,education poverty alleviation,health poverty alleviation and other accurate poverty alleviation measures,have made Luquan County win a decisive victory in the fight against poverty. By the end of December 2018,the incidence of poverty in the county had dropped to 0. 54%,and 115 poor villages( including 83 extremely poor villages) had successfully shaken off poverty. This paper analyzes and summarizes the concrete methods,main effects,characteristics and bright spots,successful experience,and reference significance of the scientific identification and precise transformation mode of rural dilapidated houses in this county,so as to provide a necessary reference for the transformation of rural dilapidated houses in Yunnan Province and even poor counties in similar provinces( cities and districts). | Zisheng YANG Renyi YANG Kaibo TIAN Zhenghong DAI Decai PAN Ying XIONG | 2019 | Asian Agricultural Research2019，11，2： | 3 |
| 18 | Application of phosphate-containing materials affects bioavailability of rare earth elements and bacterial community in soils显示文摘The exploitation and smelting of rare earths can cause serious pollution to the farmland around the mining area. The rare earth elements(REEs) are absorbed by crops and enter the human body through the food chain, which threatens people’s health. The effects of four phosphorus-containing materials-calcium superphosphate(SSP), phosphate rock(PR), calcium magnesium phosphate(CMP) and bone charcoal(BC) on rice growth and bacterial community structure in REE mining area of Xinfeng County were studied by pot experiment. The soil solution was collected during rice transplanting and harvest periods respectively, the rice and soil samples were collected and sequenced. The concentrations of water-soluble REEs were measured by inductively coupled plasma mass spectrometry(ICP-MS), and bacteria in soil was deeply sequenced by the Illumina Miseq sequencing platform. PR, CMP and BC promoted the growth of rice, improved the biomass of rice roots, shoots and grains, and significantly reduced absorption and accumulation of REEs in rice roots, shoots and grains. SSP treatment reduced the pH value of soil, significantly improved the concentration of REE solution in soil and improved biomass of rice roots, shoots and grains,and significantly improved the concentration of REEs in grain. The effects of phosphorus-containing materials on the absorption and accumulation of 15 REEs in rice roots, shoots and grains were very different, and significantly influenced the soil bacterial community. SSP reduced richness and diversity of bacteria. CMP improved the diversity of soil bacteria, but reduced their richness. PR and BC treatment improved the richness and diversity of soil bacteria, and significantly increased the abundance of Bacillus. The results showed that adding PR, CMP and BC to soil in the REE mining area of Xinfeng can improve food security and eco-environmental quality, and hence, are potential restorative materials;SSP is not recommended for use in acidic soils. | JIN ShuLan HU ZhongJun MAN BaiYing PAN HuaHua KONG Xiao JIN DeCai | 2019 | Science China(Technological Sciences)2019，62，9： | 3 |
| 19 | Analysis of the factors affecting the magnetic characteristics of nano-Fe_3O_4 particles显示文摘We prepared Fe3O4 nanoparticles using chemical coprecipitation and studied the factors affecting the magnetic characteristics of nano-Fe3O4 particles.We identified four factors and three levels of an orthogonal experiment and investigated these four factors that affect the magnetic characteristics of the Fe3O4 particles.We obtained important information from this investigation.The Fe3+ to Fe2+ molar ratio,the iron precursor salt,the amount of surfactant and the amount of alkali were found to be important.We also studied the influence of the order of alkali and surfactant addition,the aging time and the stirring speed on the magnetic characteristics of the nano-Fe3O4 particles.The Fe3O4 preparation process was also analyzed. | LI JianLing LI DeCai ZHANG ShaoLan CUI HongChao WANG Cui | 2011 | Chinese Science Bulletin2011，56，8： | 2 |
| 20 | The mobilization, recruitment and contribution of bone marrow-derivedendothelial progenitor cells to the tumor neovascularization occur at an earlystage and throughout the entire process of hepatocellular carcinoma growth显示文摘 | Haitao Zhu Qianwen Shao Xitai Sun Zhengming Deng Xianwen Yuan Decai Yu Xiang Zhou Yitao Ding | 2012 | Oncology Reports2012，，4： | 2 |
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