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| 1 | Indosinian isotope ages of plutons and deposits in southwestern Miaoershan-Yuechengling,northeastern Guangxi and implications on Indosinian mineralization in South China显示文摘The Miaoershan-Yuechengling complex pluton is the largest granitoid complex in the western Nanling metallogenic belt with a surface exposure of >3000 km2.The complex pluton is composed of an early stage granitoid batholith and late stage small intrusions.The early stage batholith contains mainly medium-grained porphyritic mica granite and porphyritic monzonite granite,whereas the late stage intrusions are composed of muscovite granite porphyry and muscovite monzonitic granite.There are many W-Sn-Mo-Pb-Zn-Cu ores in the contact zone between the batholith and strata,forming an ore-rich belt around the batholith.Based on zircon LA-ICP-MS U-Pb ages,the southwestern part of the early stage batholith formed at 228.7 ± 4.1 Ma(MSWD = 2.49),with slightly earlier magmatic activity at 243.0 ± 5.8 Ma(MSWD = 2.62).The Yuntoujie muscovite granite was associated with W-Mo mineralization and has a zircon LA-ICP-MS U-Pb age of 216.8 ± 4.9 Ma(MSWD = 1.44).The Re-Os isochron age of molybdenite from the Yuntoujie W-Mo ore was 216.8 ± 7.5 Ma(MSWD = 11.3).Our new isotope data suggest that the late stage intrusive stocks from the southwestern Miaoershan-Yuechengling batholith were closely associated with W-Mo mineralization from the Indosinian period.These new results together with previous isotope data,suggest that South China underwent not only the well-known Yanshanian mineralization event,but also a widespread Indosinian metallogenic event during the Mesozoic period.Therefore,South China has a greater potential for Indosinian mineralization than previously thought such that more attention should be given to the Indosinian ore prospecting in South China. | WU Jing LIANG HuaYing HUANG WenTing WANG ChunLong SUN WeiDong SUN YaLi LI Jing MO JiHai WANG XiuZhang | 2012 | Chinese Science Bulletin2012，57，9： | 28 |
| 2 | Experimental Study on the Characteristics of CO_2 Hydrate Formation in Porous Media below Freezing Point显示文摘Porous medium has an obvious effect on the formation of carbon dioxide hydrate. In order to study the characteristics of CO2 hydrate formation in porous medium below the freezing point, the experiment of CO2 hydrate formation was conducted in a high-pressure 1.8-L cell in the presence of porous media with a particle size of 380 μm, 500 μm and 700 μm, respectively. The test results showed that the porous medium had an important influence on the process of CO2 hydrate formation below the freezing point. Compared with porous media with a particle size of 500 μm and 700 μm, respectively, the average hydrate formation rate and gas storage capacity of carbon dioxide hydrate in the porous medium with a particle size of 380 μm attained 0.016 14 mol/h and 65.094 L/L, respectively. The results also indicated that, within a certain range of particle sizes, the smaller the particle size of porous medium was, the larger the average hydrate formation rate and the gas storage capacity of CO2 hydrate during the process of hydrate formation would be. | Zhang Xuemin Li Jinping Wu Qingbai Wang Chunlong Nan Junhu | 2015 | China Petroleum Processing & Petrochemical Technology2015，17，3： | 8 |
| 3 | Autonomous navigation for a wolfberry picking robot using visual cues and fuzzy control显示文摘Lycium barbarum commonly known as wolfberry or Goji is considered an important ingredient in Japanese,Korean,Vietnamese,and Chinese food and medicine.It is cultivated extensively in these countries and is usually harvested manually,which is laborintensive and tedious task.To improve the efficiency of harvesting and reduce manual labor,automatic harvesting technology has been investigated by many researchers in recent years.In this paper,an autonomous navigation algorithm using visual cues and fuzzy control is proposed for Wolfberry orchards.At first,we propose a new weightage(2.4B-0.9G-R)to convert a color image into a grayscale image for better identification of the trunk of Lycium barbarum,the minimum positive circumscribed rectangle is used to describe the contours.Then,using the contour points the least square method is used to fit the navigation line and a region of interest(ROI)is computed that improves the realtime accuracy of the system.Finally,a set of fuzzy controllers,for pneumatic steering system,is designed to achieve real-time autonomous navigation in wolfberry orchard.Static image experiments show that the average accuracy rate of the algorithm is above 90%,and the average time consumption is approximately 162 ms,with good robustness and real-time performance.The experimental results show that when the speed is 1 km/h,the maximum lateral deviation is less than 6.2 cm and the average lateral deviation is 2.9 cm,which meets the requirements of automatic picking of wolfberry picking robot in real-world environments. | Yue Ma Wenqiang Zhang Waqar S.Qureshi Chao Gao Chunlong Zhang Wei Li | 2021 | Information Processing in Agriculture2021，8，1： | 7 |
| 4 | Modulation of metabolic functions through Cas13d-mediated gene knockdown in liver显示文摘Dear Editor,RNA knockdown in vivo carries significant potential for dis-ease modeling and therapies.Despite the emerging approaches of CRISPR/Cas9-mediated permanent knock out of targeted genes,strategies targeting RNA for disruption are advantageous in the treatment of acquired metabolic disorders when permanent modification of genome DNA is not appropriate,and RNA virus infection diseases when pathogenic DNA is not available(such as SARS-Cov-2 and MERS infections). | Bingbing He Wenbo Peng Jia Huang Hang Zhang Yingsi Zhou Xiali Yang Jing Liu Zhijle Li Chunlong Xu Mingxing Xue Hui Yang Pengyu Huang | 2020 | Protein & Cell2020，11，7： | 7 |
| 5 | Crop positioning for robotic intra-row weeding based on machine vision显示文摘A machine-vision-based method of locating crops is described in this research.This method was used to provide real-time positional information of crop plants for a mechanical intra-row weeding robot.Within the normalized red,green,and blue chromatic coordinates(rgb),a modified excess green feature(g-r>T&g-b>T)was used to segment plant material from back ground in color images.The threshold T was automatically selected by the maximum variance(OTSU)algorithm to cope with variable natural light.Taking into account the geometry of the camera arrangement and the crop row spacing,the target regions covering the crop rows were defined based on a pinhole camera model.According to the statistical variation in the pixel histogram in each target region,locations of the crop plants were initially estimated.To obtain the accurate locations of crops,median filtering was conducted locally in the bounding boxes of the crops close to the bottom of the images.For the lateral guidance of the robot,a novel method of calculating lateral offset was proposed based on a simplified match between a template and the detected crops.Field experiments were conducted under three different illumination conditions.The results showed that the accurate identification rates on lettuce,cauliflower and maize were all above 95%.The positional error as within±15 mm,and the average processing time for a 640×480 image was 31 ms.The method was adequate to meet the technical requirement of the weeding robot,and laid a foundation for robotic weeding in commercial production system. | Li Nan Zhang Chunlong Chen Ziwen Ma Zenghong Sun Zhe Yuan Ting Li Wei Zhang Junxiong | 2015 | International Journal of Agricultural and Biological Engineering2015，8，6： | 4 |
| 6 | Reducing the yield asymmetry in Mg-5Li-3Al-2Zn alloy by hot-extrusion and multi-pass rolling显示文摘Reducing the yield asymmetry is very important concern for wrought Mg-Li alloys.In this study,Mg-5Li-3Al-2 Zn(LAZ532)alloy was successfully produced by hot-extrusion followed by multi-pass rolling at 573 K.Microstructure evolution,mechanical properties and yield asymmetry reducing of LAZ532 alloys at different rolling passes were studied.By observing microstructure using transmission electron microscopy showed that a small amount of ultra-fine Al Mg_(4)Zn_(11)and nano Li_(3)Al_(2) phases existed in the alloy.With the increasing of rolling passes,the grains of the alloys were obviously refined,and comprehensive mechanical properties were dramatically improved.Meanwhile,it also showed an excellent tension and compression yield symmetry(TYS/CYS was about 1).The results showed that the combined action of the weak{0001}basal lamellar texture,grain refinement and addition of Li element could effectively improve the yield symmetry.Furthermore,based on theoretical analysis,the yield strength in the alloys mainly depended on the strengthening contributions of LAGBs and HAGBs,and strengthening effect of HAGBs most(~50%)to the yield strength improvement. | Xiaoqiang Li Liang Ren Qichi Le Lei Bao Peipeng Jin Ping Wang Chunlong Cheng Xiong Zhou Chenglu Hu | 2021 | Journal of Magnesium and Alloys2021，9，3： | 4 |
| 7 | Investigation of Portevin–Le Chatelier effect in rolled α-phase Mg-Li alloy during tensile and compressive deformation显示文摘Avoiding the Portevin-Le Chatelier(PLC)effect is very important concern for wrought Mg-Li alloys.In this study,the special PLC effect was found in rolled Mg-5Li-3Al-2Zn(LAZ532)alloy during tensile and compressive deformation.By observing microstructure evolution of the alloy during tensile and compressive deformation,it was found that prismaticand pyramidalslips were activated during tensile deformation,resulting in plenty of dislocation accumulation.In the deformation process after compressive yielding,the deformations in coarse grains and fine grains were dominated by{1012}extension twinning and grain boundary slip,respectively.Based on experimental result analysis,the sudden appearance of PLC effect in the later stage of axial tensile deformation(along rolled direction)was caused by interaction between solute atoms and dislocations.In the process of axial compressive deformation(along rolled direction),PLC effect presented the complex and changeable phenomenon of appeared-disappeared-appeared,which was mainly caused by the continuous nucleation of twin in the material,the activation of grain boundary slip and the shear deformation of twin,respectively. | Xiaoqiang Li Chunlong Cheng Qichi Le Lei Bao Peipeng Jin Ping Wang Liang Ren Hang Wang Xiong Zhou Chenglu Hu | 2020 | Journal of Materials Science & Technology2020，52，17： | 3 |
| 8 | SNP Detection of High Density Lipoprotein Binding Protein Gene (HBP) and Its Correlations with Growth Traits in Largemouth Bass(Micropterus salmoides)显示文摘High density lipoprotein binding protein( HBP) plays an important role in lipid metabolism of animals. Lipids are indispensable energy materials for fishes,especially for carnivorous fishes with low utilization efficiency of carbohydrates. The single nucleotide polymorphism( SNP) of HBP gene may affect the fat metabolism,thereby exerting an effect on the growth traits of largemouth bass( Micropterus salmoides). Investigating the correlations between SNP and growth traits can provide candidate markers for molecular marker-assisted selection. In this study,partial genomic fragments of HBP gene( Gen Bank accession number:KF652241) were amplified based on the sequences of an available contig in the EST-SNP database of largemouth bass. Three SNP mutation loci were identified in the 3' non-coding region of HBP gene by direct sequencing,including H1( G + 2782T),H2( T + 2817C) and H3( G + 2857A). Three SNP loci of 165 randomly selected largemouth bass individuals were detected and genotyped by Sna Pshot assay. Genetic structure was analyzed by POPGENE32 software. By using spss17. 0software,a general linear model( GLM) was established for correlation analysis between different genotypes at SNP loci of HBP gene and various growth traits. The results showed that three SNP loci were in Hardy-Weinberg equilibrium state. To be specific,loci H1 and H2 formed two haplotypes( A and B),and three genotypes( AA,AB,and BB) were observed; loci H1,H2 and H3 formed six diplotypes( D1,D2,D3,D4,D5 and D6). According to the correlations between different genotypes and various growth traits,the body weight and total length of largemouth bass individuals with genotype BB were significantly higher than those of individuals with genotype AB( P < 0. 05); the body weight and total length of largemouth bass individuals with diplotype D6 were significantly higher than those of individuals with diplotype D4( P < 0. 05). In this study,SNP markers correlated with growth traits were obtained in the 3' non-coding region of HBP gene in largemouth bass,which could be used as candidate genetic markers for subsequent molecular marker-assisted selection breeding of largemouth bass. | Chunlong ZHOU Junjie BAI Shengjie LI Jiajia FAN Dongmei MA | 2015 | Agricultural Biotechnology2015，4，3： | 3 |
| 9 | Three dimensional apple tree organs classification and yield estimation algorithm based on multifeatures fusion and support vector machine显示文摘The automatic classification of apple tree organs is of great significance for automatic pruning of apple trees,automatic picking of apple fruits,and estimation of fruit yield.How-ever,there are some problems of dense foliage,partial occlusion and clustering of apple fruits.All of the problems above would contribute to the difficulties of organs classification and yield estimation of the apple trees.In this paper a method based on Color and Shape Multi-features Fusion and Support Vector Machine(SVM)for 3D apple tree organs classifi-cation and yield estimation was proposed.The method was designed for dwarf and densely planted apple trees at the early and late maturity stages.196-dimensional feature vectors composed with Red Green Blue(RGB),Hue Saturation Value(HSV),Curvatures,Fast Point Feature Histogram(FPFH),and Spin Image were extracted firstly.And then the SVM based on linear kernel function was trained,after that the trained SVM was used for apple tree organs classification.Then the position weighted smoothing algorithm was used for clas-sified apple tree organs smoothing.Then the agglomerative hierarchical clustering algo-rithm was used to recognize single apple fruit for yield estimation.On the same training and test set the experimental results showed that the SVM based on linear kernel function outperformed the KNN algorithm and Ensemble algorithm.The Recall,Precision and F1 score of the proposed method for yield estimation were 93.75%,96.15%and 94.93%respec-tively.In summary,to solve the problems of apple tree organs classification and yield esti-mation in natural apple orchard,a novelty method based on multi-features fusion and SVM was proposed and achieve good performance.Moreover,the proposed method could pro-vide technical support for automatic apple picking,automatic pruning of fruit trees,and automatic information acquisition and management in orchards. | Luzhen Ge Kunlin Zou Hang Zhou Xiaowei Yu Yuzhi Tan Chunlong Zhang Wei Li | 2022 | Information Processing in Agriculture2022，9，3： | 3 |
| 10 | Effect of REs(Y,Nd)addition on high temperature oxidation kinetics,oxide layer characteristic and activation energy of AZ80 alloy显示文摘The oxidation behaviors of AZ80,AZ8O-0.32 Y and AZ8O-0.38 Nd(wt.%)alloys were researched at 413℃,420℃,427v and 433℃for up to 6 h in air environment via a high precision analytical balance,a laser confocal microscope,differential scanning calorimeter(DSC)analysis,X-ray diffraction(XRD)analysis,scanning electron microscope(SEM)observation,and X-ray photoelectron spectroscopy(XPS)analysis.The results show that the weight gain and oxidation rate of AZ80 are reduced significantly,the initiation form and propagation of cracks in oxide layer are changed.Compact and protective oxide layer forms on alloy surface with Y or Nd addition.And the activation energies of AZ80,AZ80-0.32Y and AZ8O-0.38Nd alloys calculated via Arrhenius equation are 82.556 kJ/mol,177.148kJ/mol and 136.738 kJ/mol,respectively. | Chunlong Cheng Xiaoqiang Li Qichi Le Ruizhen Guo Qing Lan Jianzhong Cui | 2020 | Journal of Magnesium and Alloys2020，8，4： | 3 |
| 11 | Research and application on corn crop identification and positioning method based on Machine vision显示文摘Weeds that grow among crops are undesirable plants and have adversely affected crop growth and yield.Therefore,the study explores corn identification and positioning methods based on machine vision.The ultra-green feature algorithm and maximum betweenclass variance method(OTSU)were used to segment maize corn,weeds,and land;the segmentation effect was significant and can meet the following shape feature extraction requirements.Finally,the identification and positioning of corn were achieved by morphological reconstruction and pixel projection histogram method.The experiment reveals that when a weeding robot travels at a speed of 1.6 km/h,the recognition accuracy can reach 94.1%.The technique used in this study is accessible for normal cases and can make a good recognition effect;the accuracy and real-time requirements of robot recognition are improved and reduced the calculation time. | Bingrui Xu Li Chai Chunlong Zhang | 2023 | Information Processing in Agriculture2023，10，1： | 2 |
| 12 | Ultrafast Synthesis of Metal-Layered Hydroxides in a Dozen Seconds for High-Performance Aqueous Zn(Micro-)Battery显示文摘Efficient synthesis of transition metal hydroxides on conductive substrate is essential for enhancing their merits in industrialization of energy storage field.However,most of the synthetic routes at present mainly rely on traditional bottom-up method,which involves tedious steps,time-consuming treatments,or additional alkaline media,and is unfavorable for high-efficiency production.Herein,we present a facile,ultrafast and general avenue to synthesize transition metal hydroxides on carbon substrate within 13 s by Joule-heating method.With high reaction kinetics caused by the instantaneous high temperature,seven kinds of transition metal-layered hydroxides(TM-LDHs)are formed on carbon cloth.Therein,the fastest synthesis rate reaches~0.46 cm^(2)s^(-1).Density functional theory calculations further demonstrate the nucleation energy barriers and potential mechanism for the formation of metal-based hydroxides on carbon substrates.This efficient approach avoids the use of extra agents,multiple steps,and long production time and endows the LDHs@carbon cloth with outstanding flexibility and machinability,showing practical advantages in both common and micro-zinc ion-based energy storage devices.To prove its utility,as a cathode in rechargeable aqueous alkaline Zn(micro-)battery,the NiCo LDH@carbon cloth exhibits a high energy density,superior to most transition metal LDH materials reported so far. | Xiangyang Li Fangshuai Chen Bo Zhao Shaohua Zhang Xiaoyu Zheng Ying Wang Xuting Jin Chunlong Dai Jiaqi Wang Jing Xie Zhipan Zhang Yang Zhao | 2023 | Nano-Micro Letters2023，15，3： | 2 |
| 13 | CHH methylation of genes associated with fatty acid and jasmonate biosynthesis contributes to cold tolerance in autotetraploids of Poncirus trifoliata显示文摘Polyploids have elevated stress tolerance,but the underlying mechanisms remain largely elusive.In this study,we showed that naturally occurring tetraploid plants of trifoliate orange(Poncirus trifoliata(L.) Raf.) exhibited enhanced cold tolerance relative to their diploid progenitors.Transcriptome analysis revealed that whole-genome duplication was associated with higher expression levels of a range of well-characterized cold stress-responsive genes.Global DNA methylation profiling demonstrated that the tetraploids underwent more extensive DNA demethylation in comparison with the diploids under cold stress.CHH methylation in the promoters was associated with up-regulation of related genes,whereas CG,CHG,and CHH methylation in the 3’-regions was relevant to gene down-regulation.Of note,genes involved in unsaturated fatty acids(UFAs) and jasmonate(JA)biosynthesis in the tetraploids displayed different CHH methylation in the gene flanking regions and were prominently up-regulated,consistent with greater accumulation of UFAs and JA when exposed to the cold stress.Collectively,our findings explored the difference in cold stress response between diploids and tetraploids at both transcriptional and epigenetic levels,and gained new insight into the molecular mechanisms underlying enhanced cold tolerance of the tetraploid.These results contribute to uncovering a novel regulatory role of DNA methylation in better cold tolerance of polyploids. | Yue Wang Lanlan Zuo Tonglu Wei Yu Zhang Yang Zhang Ruhong Ming Dahro Bachar Wei Xiao Khan Madiha Chuanwu Chen Qijun Fan Chunlong Li Ji-Hong Liu | 2022 | Journal of Integrative Plant Biology2022，64，12： | 2 |
| 14 | Genetic and structural analyses suggest that a novel SPG3A mutation causes severe phenotypes of hereditary spastic paraplegia显示文摘Hereditary spastic paraplegia (HSP) is a group of neurodegenerative diseases. The genotypes and phenotypes of HSP are extremely heterogenous. SPG3A is one of the identified genes underlying HSP, and codes for a GTPase, atlastin. Mutations in SPG3A are currently believed to be associated with early onset and mild phenotypes. And most structura predictions could not detect gross changes in the mutant protein. However, in a severely affected HSP family we have identified a novel SPG3A mutation, c.1228G>A (p.G410R), in a Tibetan kindred. The mutation occurred at the highly conserved nucleotide and co-segregated with the disease, and was absent in the control subjects. Structural predictions showed that the Tibetan mutation occurred at the linking part between the guanylate-binding protein domain (GB, the ball region) and the transmembrane helices (TM, the rod region) at the start point of an α-helix, which may disrupt the helix, and cause changes in the overall structure of the transmembrane region of the molecule. Our results indicate that severe pheno- types can also arise from SPG3A mutations and the linking part of the guanylate-binding protein domainand the transmembrane helices might be crucial in determining the severity of the disease. This paper not only presents the first SPG3A mutational report from the Chinese population, but also provides po- tential evidence for a possible correlation between the severity of the phenotypes of HSP with the ex- tension of the changes in the protein structures of atlastin. | CHEN Suqin ZHOU Yan LI Xunhua Labu HUANG Shuang HUANG Weijun ZHOU Chunlong MAXWELL Patrick H WANG Yiming | 2006 | Chinese Science Bulletin2006，51，16： | 2 |
| 15 | Evaluation of Overfire Air Behavior for a Down-Fired 350 MWe Utility Boiler with Multiple Injection and Multiple Staging显示文摘 | Min Kuang Zhengqi Li Chunlong Liu | 2012 | Applied Thermal Engineering2012，48，16： | 1 |
| 16 | Aerodynamic Characteristics within a Cold Small-scale Model for a Down-fired 350MWe Supercritical Utility Boiler at Various Primary Air to Vent Air Ratios显示文摘 | Chunlong Liu Zhengqi Li Xiang Zhang | 2012 | Energy2012，47，29： | 1 |
| 17 | Analysis of coals and biomass pyrolysis using the distributed activation energy model显示文摘 | Li Zhengqi Liu Chunlong Chen Zhichao | 2009 | Bioresource Technology2009，100，2： | 1 |
| 18 | Effects of Rare Earth on Structure an Mechanical Properties of Clean Bnbre Steel显示文摘 | Li Chunlong Jiang Maofa | 2005 | Journal of Rare Earths2005，4，23： | 1 |
| 19 | Influence of different oil feed rate on bituminous coal ignition in a full-scale tiny-oil ignition burner显示文摘 | Chunlong LIU Qunyi ZHU Zhengqi LI Qiudong ZONG, Xiang ZHANG, Zhichao CHEN Zhengqi LI Qiudong ZONG Xiang ZHANG Zhichao CHEN | 2013 | Frontiers in Energy2013，7，3： | 1 |
| 20 | Effects of different treatments on the nutrition value of rice straw显示文摘 | CHUNLONG LIU FENGJUN SUN CHANGSHENG LI | 2002 | Journal of Scalper2002，28，1： | 1 |
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