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| 1 | CFD study on double-to single-loop flow pattern transition and its influence on macro mixing efficiency in fully baffled tank stirred by a Rushton turbine显示文摘For a fully baffled tank stirred by a Rushton turbine (RT), the flow pattern will change from double- to single-loop as the off bottom clearance (C) of the RT decreases from one third of the tank diameter. Such a flow pattern transition as well as its influence on the macro mixing efficiency was investigated via CFD simulation. The transient sliding mesh approach coupled with the standard k-s turbulence model could correctly and efficiently reproduce the reported critical C range where the flow pattern changes. Simulation results indicated that such a critical C range varied hardly with the impeller rotation speed but decreased significantly with increasing impeller diameter. Small RTs are preferable to generating the single-loop flow pattern. A mechanism of the flow pattern transition was further proposed to explain these phe no mena. The discharge stream from the RT deviates down wards from the horizontal direction for small C values;if it meets the tank wall first, the double-loop will form;if it hits the tank bottom first, the single-loop will form. With the flow pattern transition, the mixing time decreased by about 35% at the same power input (P), indicating that the single-loop flow pattern was more efficient than the double-loop to enhance the macro mixing in the tank. A comparison was further made between the single-loop RT and pitched blade turbine (PBT, 45°) from macro mixing perspective. The single-loop RT was found to be less efficient than the PBT and usually required 60% more time to achieve the same level of macro mixing at the same P. | Quanhong Zhu Hang Xiao Aqiang Chen Shujun Geng Qingshan Huang | 2019 | Chinese Journal of Chemical Engineering2019，27，5： | 6 |
| 2 | Parallel selection of distinct Tof5 alleles drove the adaptation of cultivated and wild soybean to high latitudes显示文摘Photoperiod responsiveness is a key factor limiting the geographic distribution of cultivated soybean and its wild ancestor.In particular,the genetic basis of the adaptation in wild soybean remains poorly understood.In this study,by combining whole-genome resequencing and genome-wide association studies we identified a novel locus,Time of Flowering 5(Tof5),which promotes flowering and enhances adaptation to high latitudes in both wild and cultivated soybean.By genomic,genetic and transgenic analyses we showed that Tof5 en-codes a homolog of Arabidopsis thaliana FRUITFULL(FUL).Importantly,further analyses suggested that different alleles of Tof5 have undergone parallel selection.The Tof5H1 allele was strongly selected by humans after the early domestication of cultivated soybean,while Tof5H2 allele was naturally selected in wild soybean,and in each case facilitating adaptation to high latitudes.Moreover,we found that the key flowering repressor E1 suppresses the transcription of Tof5 by binding to its promoter.In turn,Tof5 physically associates with the promoters of two important FLOWERING LOCUS T(FT),FT2a and FT5a,to upregulate their transcription and promote flowering under long photoperiods.Collectively,ourfindings provide insights into how wild soybean adapted to high latitudes through natural selection and indicate that cultivated soybean underwent changes in the same gene but evolved a distinct allele that was artificially selected after domestication. | Lidong Dong Qun Cheng Chao Fang Lingping Kong Hui Yang Zhihong Hou Yongli Li Haiyang Nan Yuhang Zhang Qingshan Chen Chunbao Zhang Kun Kou Tong Su Lingshuang Wang Shichen Li Haiyang Li Xiaoya Lin Yang Tang Xiaohui Zhao Sijia Lu Baohui Liu Fanjiang Kong | 2022 | Molecular Plant2022，15，2： | 5 |
| 3 | Behavior of mixed ZnO and SiO_2 nano-particles in magnetic field assisted fluidization显示文摘The fluidization behavior of ZnO nano-particles in magnetic fluidized bed (MFB) by adding coarse magnetic particles was investigated, followed by the co-fluidization of mixtures of ZnO and SiO2 nano-particles. For such co-fluidization, bed expansion was found to change smoothly with gas velocity through a range of stable operation. By measuring the bed expansion ratio and pressure drop, a stability diagram for the mixture in MFB was obtained. Within this stable operation range, with increasing gas velocity the pressure drop hardly changes as the bed expands, up to an expansion ratio of more than 4. | Ping Zeng Yao Zhou Guanqun Chen Qingshan Zhu | 2007 | China Particuology2007，5，1： | 4 |
| 4 | Structure and antibacterial activity of Ce3+ exchanged montmorillonites显示文摘Four kinds of Ce3+ exchanged montmorillonites(Ce/MMTs) were prepared by an ion-exchange reaction, and characterized with energy dispersive X-ray analysis (EDX), X-ray difference (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron micros-copy (SEM). The surface properties and antibacterial activity of Ce/MMTs were also investigated. The chemical compositions of Ce/MMTs were determined, and the cerium of Ce/MMTs was confirmed to be present as trivalent cerium state. The d001 basal spacings of Ce/MMTs were enlarged with the enhancement of the cerium contents, and the particles were formed with irregular shape. On increasing the Ce con-tents of Ce/MMTs, the special surface areas were decreased, but the total pore volumes and the average pore sizes were increased. The anti-bacterial activity of Ce/MMTs is increased with increasing the cerium contents, and 1.5g/L of Ce/MMT-3 containing 11.46wt.% of curium could remove all the Staphylococcus aureus and more than 99.9% of the Escherichia coli within 24.0 h of contact. Moreover, Ce/MMTs dis-played bactericidal activity. | OUYANG Yousheng XIE Yushan TAN Shaozao SHI Qingshan CHEN Yiben | 2009 | Journal of Rare Earths2009，27，5： | 4 |
| 5 | Enhanced production of seed oil with improved fatty acid composition by overexpressing NAD^(+)-dependent glycerol-3-phosphate dehydrogenase in soybean显示文摘There is growing interest in expanding the production of soybean oils(mainly triacylglycerol, or TAG) to meet rising feed demand and address global energy concerns. We report that a plastidlocalized glycerol-3-phosphate dehydrogenase(GPDH), encoded by GmGPDHp1 gene, catalyzes the formation of glycerol-3-phosphate(G3 P), an obligate substrate required for TAG biosynthesis.Overexpression of GmGPDHp1 increases soybean seed oil content with high levels of unsaturated fatty acids(FAs), especially oleic acid(C18:1), without detectably affecting growth or seed protein content or seed weight. Based on the lipidomic analyses, we found that the increase in G3 P content led to an elevated diacylglycerol(DAG) pool, in which the Kennedy pathwayderived DAG was mostly increased, followed by PC-derived DAG, thereby promoting the synthesis of TAG containing relatively high proportion of C18:1. The increased G3 P levels induced several transcriptional alterations of genes involved in the glycerolipid pathways. In particular, genes encoding the enzymes responsible for de novo glycerolipid synthesis were largely upregulated in the transgenic lines, in-line with the identified biochemical phenotype. These results reveal a key role for GmGPDHp1-mediated G3 P metabolism in enhancing TAG synthesis and demonstrate a strategy to modify the FA compositions of soybean oils for improved nutrition and biofuel. | Ying Zhao Pan Cao Yifan Cui Dongxu Liu Jiapeng Li Yabin Zhao Siqi Yang Bo Zhang Runnan Zhou Minghao Sun Xuetian Guo Mingliang Yang Dawei Xin Zhanguo Zhang Xin Li Chen Lv Chunyan Liu Zhaoming Qi Jingyu Xu Xiaoxia Wu Qingshan Chen | 2021 | Journal of Integrative Plant Biology2021，63，6： | 4 |
| 6 | GmCRY1s modulate gibberellin metabolism to regulate soybean shade avoidance in response to reduced blue light显示文摘Soybean is an important legume crop that displays the classic shade avoidance syndrome(SAS),including exaggerated stem elongation,which leads to lodging and yield reduction under density farming conditions.Here,we compared the effects of two shade signals,low red light to far-red light ratio(R:FR)and low blue light(LBL),on soybean status and revealed that LBL predominantly induces excessive stem elongation.We used CRISPR-Cas9-engineered Gmcry mutants to investigate the functions of seven cryptochromes(GmCRYs)in soybean and found that the four GmCRY1s overlap in mediating LBL-induced SAS.Lightactivated GmCRY1s increase the abundance of the bZlP transcription factors STF1 and STF2,which directly upregulate the expression of genes encoding GA2 oxidases to deactivate GA1 and repress stem elongation.Notably,GmCRY1b overexpression lines displayed multiple agronomic advantages over the wild-type control under both dense planting and intercropping conditions.Our study demonstrates the integration of GmCRY1-mediated signals with the GA metabolic pathway in the regulation of LBL-induced SAS in soybean.It also provides a promising option for breeding lodging-resistant,high-yield soybean cultivars in the future. | Xiangguang Lyu Qican Cheng Chao Qin Yinghui Li Xinying Xu Ronghuan Ji Ruolan Mu Hongyu Li Tao Zhao Jun Liu Yonggang Zhou Haiyan Li Guodong Yang Qingshan Chen Bin Liu | 2021 | Molecular Plant2021，14，2： | 4 |
| 7 | Coprinus comatus-derived nitrogen-containing biocarbon electrocatalyst with the addition of self-generating graphene-like support for superior oxygen reduction reaction显示文摘The development of nitrogen-rich biomassderived carbon catalysts provides an attractive perspective to substitute for Pt-based electrocatalysts for oxygen reduction reaction(ORR). We here report a facile strategy for synthesis of a nitrogen-doped biocarbon/graphene-like composite electrocatalyst by pyrolyzing a solid-state mixture of coprinus comatus biomass and melamine under nitrogen protection. The graphtic carbon nitride formed by polycondensation of melamine at 600 °C acts as a selfsacrificing template to generate the nitrogen-doped graphene-like sheet, which can function as an inserting agent and self-generating support. The composite catalyst exhibits the most promising catalytic activity towards the fourelectron ORR with a half-wave potential of around 0.83 V(vs. RHE), and more excellent stability and tolerance to methanol/ethanol compared to the commercial Pt/C catalyst. It is interestingly found that both a higher content of nitrogen and a larger ratio of graphitic-nitrogen species,which may derive from self-addition of graphene-like support into the catalyst, can effectively improve the electrocatalytic activity. The planar N group may be the nitrogen functionality that is most responsible for maintaining the ORR activity in alkaline medium. This study can largely encourage the exploration of high-performance carbon-based catalysts from economical and sustainable fungus biomass. | Chaozhong Guo Wenli Liao Zhongbin Li Lingtao Sun Haibo Ruan Qingshan Wu Qinghong Luo Jie Huang Changguo Chen | 2016 | Science Bulletin2016，61，12： | 4 |
| 8 | Statistical spectrum model of wind velocity at Beijing Meteorological Tower显示文摘The wind velocity spectra at Beijing Meteorological Tower are calculated using Hilbert-Huang transform and Fourier transform,respectively.A innovative model of wind velocity spectrum,which is accordant with the characteristics in both the inertial subrange and the large eddies range,is presented in this paper.The method of least squares is adopted to obtain the parameters in the model.Then the differences between the FFT spectrum and the HHT spectrum are compared.It is indicated that the values of the HHT spectrum in the energy containing range are slightly larger than those of the FFT spectrum while the values of the HHT spectrum in both inertial subrange and dissipation subrange are very close to that of Fourier spectrum.It is concluded that the HHT spectrum describes elaborately and accurately the spectrum values in the low frequencies and the fitted wind velocity model provides a reference for reconstructing the near-ground wind field of Beijing city in wind tunnel test and for numerical simulation. | TIAN YuJi YANG QingShan YANG Na LI Bo CHEN Bo | 2011 | Science China(Technological Sciences)2011，54，11： | 3 |
| 9 | Molecular characterization of RAPD and SCAR marker linked to the frog-eye leaf spot resistance gene in soybean显示文摘Two fragments SCS362o and SCS3580 of the co-dominant marker OPS0362o&580 that were linked to the resistance gene of soybean frog-eye leaf spot have been completely sequenced. A significant insertion of 30 bp is the main reason of the polymorphism between the two fragments. The results of Southern hybridization indicate that SCS362o derives from a single- or low-copy sequence and can be used as an RFLP probe. A co-dominant SCAR marker SCSSeao&sao has been developed based on the sequences. The segregation of SCS362o&58o is similar to that of RAPD marker OPS03620&580. Significant polymorphism has been shown between resistant and susceptible genotypes when 62 soybean genotypes were surveyed for the SCAR marker. Therefore, the marker can be used in the resistance breeding of soybean frog-eye leaf spot by marker-assisted selection. | ZOU Jijun YANG Qingkai CHEN Shouyi CHEN Qingshan LIU Yaguang DONG Wei | 2000 | Chinese Science Bulletin2000，45，5： | 3 |
| 10 | Sustained JNK1 activation is associated with altered histone H3 methylations in human liver cancer显示文摘 | Qingshan Chang Yadong Zhang Kevin J. Beezhold Deepak Bhatia Hongwen Zhao Jianguo Chen Vince Castranova Xianglin Shi Fei Chen | 2008 | Journal of Hepatology2008，，2： | 3 |
| 11 | An Integrated Map of Soybean Physical Map and Genetic Map显示文摘Soybean is a major crop in the world, and it is a main source of plant proteins and oil. A lot of soybean genetic maps and physical maps have been constructed, but there are no integrated map between soybean physical map and genetic map. In this study, soybean genome sequence data, released by JGI (US Department of Energy's Joint Genome Institute), had been downloaded. With the software Blast 2.2.16, a total of 161 super sequences were mapped on the soybean public genetic map to construct an integrated map. The length of these super sequences accounted for 73.08% of all the genome sequence. This integrated map could be used for gene cloning, gene mining, and comparative genome of legume. | QI Zhaoming LI Hui WU Qiong SUN Yanan LIU Chunyan HU Guohua CHEN Qingshan | 2009 | Journal of Northeast Agricultural University(English Edition)2009，16，2： | 3 |
| 12 | Investigation on induction brazing of profiled cBN wheel for grinding of Ti-6Al-4V显示文摘Profiled monolayer cBN wheel was induction brazed for grinding of titanium dovetail slot in this study.Aimed at acquiring a uniform temperature distribution along the profiled surface and reducing the thermal deformation of the brazed wheel,a finite element model was established to investigate the temperature uniformity during induction brazing.A suitable induction coil and the related working parameters were designed and chosen based on the simulation results.Ag-Cu-Ti alloy and cBN grains were applied in the induction brazing experiment.The results showed geometric deformation of the brazed wheel was no more than 0.01 mm and chemical reaction layer were found on the brazed joint interface.Further validation tests were carried out by grinding of Ti-6 Al-4 V alloy.Compared to the electroplated wheel,the brazed wheel showed better performance such as low specific grinding energy and good ground quality in grinding of Ti-6 Al-4 V alloy.Abrasion wear was found to be the main failure mode for the induction brazed wheel,while adhesion and grains pull-out were the main failure mode for the electroplated wheel. | Qilin LI Kai DING Weining LEI Jiajia CHEN Qingshan HE Zhenzhen CHEN | 2021 | Chinese Journal of Aeronautics2021，34，4： | 2 |
| 13 | Effect of surfactant protein A on lipopolysaccharide-induced tumor necrosis factor-α expression in human proximal tubular epithelial cells显示文摘 | Liu Jiao Liu Zhiyong Feng Lizhi Ding Guohua Chen Dechang Zhou Qingshan | 2014 | Chinese Medical Journal2014，，2： | 2 |
| 14 | SPM-IS: An auto-algorithm to acquire a mature soybean phenotype based on instance segmentation显示文摘Mature soybean phenotyping is an important process in soybean breeding;however, the manual process is time-consuming and labor-intensive. Therefore, a novel approach that is rapid, accurate and highly precise is required to obtain the phenotypic data of soybean stems, pods and seeds. In this research, we propose a mature soybean phenotype measurement algorithm called Soybean Phenotype Measure-instance Segmentation(SPM-IS). SPM-IS is based on a feature pyramid network, Principal Component Analysis(PCA) and instance segmentation. We also propose a new method that uses PCA to locate and measure the length and width of a target object via image instance segmentation. After 60,000 iterations, the maximum mean Average Precision(m AP) of the mask and box was able to reach 95.7%. The correlation coefficients R^(2) of the manual measurement and SPM-IS measurement of the pod length, pod width, stem length, complete main stem length, seed length and seed width were 0.9755, 0.9872, 0.9692, 0.9803,0.9656, and 0.9716, respectively. The correlation coefficients R^(2) of the manual counting and SPM-IS counting of pods, stems and seeds were 0.9733, 0.9872, and 0.9851, respectively. The above results show that SPM-IS is a robust measurement and counting algorithm that can reduce labor intensity, improve efficiency and speed up the soybean breeding process. | Shuai Li Zhuangzhuang Yan Yixin Guo Xiaoyan Su Yangyang Cao Bofeng Jiang Fei Yang Zhanguo Zhang Dawei Xin Qingshan Chen Rongsheng Zhu | 2022 | The Crop Journal2022，10，5： | 2 |
| 15 | Model-based method for projective clustering显示文摘 | Chen Lifei Jiang Qingshan Wang Shengrui | 2012 | IEEE Transactions on Knowledge and Data Engineering2012，24，7： | 1 |
| 16 | Migration routes,behavior and protection status of Eurasian Spoonbills(Platalea leucorodia)wintering in China显示文摘Background:The Eurasian Spoonbill(Platalea leucorodia)occurs throughout Eurasia and North and sub-Saharan Africa,with three recognized subspecies and six geographically distributed populations.However,in China,we knew almost nothing about migration routes,habitat use and effectiveness of current site protection measures for this species.Methods:We deployed Global Positioning System/Global System for Mobile Communications(GPS/GSM)satellite trackers on 29 Eurasian Spoonbills captured in summer in Mongolia and northeastern China,to obtain complete migration routes data from 10 individuals from 19 complete migration episodes.Results:Tracking data showed no geographical overlap during the annual cycle in Eurasian Spoonbills marked in the two main summering areas.Birds marked in the Naoli River Basin in Heilongjiang Province,China,wintered along the Jiangsu coastline in China,while Eurasian Spoonbills from two discrete summering areas(in Inner and western Mon-golia)overwintered inland in the Yangtze River floodplain of China.Excluding the single Inner Mongolian bird,spring migration was significantly faster than autumn migration in the other two groups of birds.Eurasian Spoonbills mainly used water,wetland and grassland habitats in summer,but almost exclusively water in winter.Lack of protection of staging sites used by all the birds in spring and poor levels of protection throughout the annual cycle for western Mongolian birds(5-22%)gives considerable cause for concern,although sites used in other time by East Mongolian and Naoli River birds in the rest of their annual life cycle enjoyed good levels of protection(49-95%).Conclusions:These results revealed previously unknown relationships between summering and wintering areas,migration routes and stopover sites for Eurasian Spoonbills wintering in China,suggesting the existence of discrete biogeographical population units.They also identified winter habitat use of Eurasian Spoonbills in China,confirming open water habitats as being critical throughout the annual cycle,although based on small sample size,gaps in cur-rent site safeguard networks for these populations. | Jire Xi Xueqin Deng Gerelt Zhao Nyambayar Batbayar Iderbat Damba Qingshan Zhao Shoubin Cui Chao Jiang Yiwen Chen Yat-tung Yu Lei Cao Anthony David Fox | 2021 | Avian Research2021，12，4： | 1 |
| 17 | Association of systemic inflammation with marked changes in particulate air pollution in Beijing in 2008显示文摘 | Xiaohua Xu Furong Deng Xinbiao Guo Peng Lv Mianhua Zhong Cuiqing Liu Aixia Wang Kevin Tzan Silis Y. Jiang Morton Lippmann Sanjay Rajagopalan Qingshan Qu Lung-Chi Chen Qinghua Sun | 2012 | Toxicology Letters2012，，2： | 1 |
| 18 | Model-based method for projective clustering显示文摘 | Chen Lifei Jiang Qingshan Wang Shengrui | 2012 | IEEE Transactions on Knowledge and Data Engineering2012，24，7： | 1 |
| 19 | Arsenic promotes angiogenesis in vitro via a heme oxygenase-1-dependent mechanism显示文摘 | Dan Meng Xin Wang Qingshan Chang Andrew Hitron Zhuo Zhang Mei Xu Gang Chen Jia Luo Binghua Jiang Jing Fang Xianglin Shi | 2010 | Toxicology and Applied Pharmacology2010，，3： | 1 |
| 20 | Surgical treatment of femoroacetabular impingement:evaluation of the effect of the size of the resection显示文摘 | Rodrigo M Mardones Carlos Gonzalez Qingshan Chen | 2005 | The Journal of Bone and Joint Surgery2005，87，2： | 1 |
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