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| 1 | Management of post-hepatectomy complications显示文摘Hepatic resection had an impressive growth over time.It has been widely performed for the treatment of various liver diseases,such as malignant tumors,benign tumors,calculi in the intrahepatic ducts,hydatid disease,and abscesses.Management of hepatic resection is challenging.Despite technical advances and high experience of liver resection of specialized centers,it is still burdened by relatively high rates of postoperative morbidity and mortality.Especially,complex resections are being increasingly performed in high risk and older patient population.Operation on the liver is especially challenging because of its unique anatomic architecture and because of its vital functions.Common posthepatectomy complications include venous catheterrelated infection,pleural effusion,incisional infection,pulmonary atelectasis or infection,ascites,subphrenic infection,urinary tract infection,intraperitoneal hemorrhage,gastrointestinal tract bleeding,biliary tract hemorrhage,coagulation disorders,bile leakage,and liver failure.These problems are closely related to sur-gical manipulations,anesthesia,preoperative evaluation and preparation,and postoperative observation and management.The safety profile of hepatectomy probably can be improved if the surgeons and medical staff involved have comprehensive knowledge of the expected complications and expertise in their management.This review article focuses on the major postoperative issues after hepatic resection and presents the current management. | Shan Jin Quan Fu Gerile Wuyun Tu Wuyun | 2013 | World Journal of Gastroenterology2013，19，44： | 24 |
| 2 | The Hardy Rubber Tree Genome Provides Insights into the Evolution of Polyisoprene Biosynthesis显示文摘Eucommia ulmoides,也叫的强壮的橡胶树,是一棵经济地重要的树;然而,它的染色体顺序的缺乏 ?限制基本生物研究和这植物种的应用研究。这里,我们在场它的 1.2-Gb 染色体的一个高质量的集会(支架 N50 ?=? 1.88 Mb ) 与至少 26 ? 为 E 的 723 预言的基因。ulmoides,顺序 Garryales 的首先定序的染色体,它用联合定序的 Illumina 的综合策略被获得,定序的 PacBio,和印射的 BioNano。作为到 lamiids 和 campanulids 的姐妹 taxon, E。ulmoides 经历了三倍由核心 eudicots 而是没有进一步整个染色体的复制分享了的一个古老的染色体 ? 在最后 1.25 亿年里。E。ulmoides 为涉及压力回答和第二等的代谢物的生合成的多重基因展出高表达式层次或基因数字扩大,它可以说明它的可观的环境适应性。与橡胶树(Hevea brasiliensis ) 相对照,它生产 cis 聚异式戊二我烯, E。ulmoides 演变综合经由 farnesyl diphosphate synthases (FPS ) 的长链的 trans 聚异式戊二我烯。而且, FPS 和橡胶延伸 factor/small 橡胶粒子蛋白质基因家庭从 H 独立地被扩展。brasiliensis 系。这些结果提供新卓见进 E. 的生物学 ? ulmoides 和聚异式戊二我烯生合成的起源。 | Ta-na Wuyun Lin Wang Huimin Liu Xuewen Wang Liangsheng Zhang Jeffrey L. Bennetzen Tiezhu Li Lirong Yang Panfeng Liu Lanying Du Lu Wang Mengzhen Huang Jun Qing Iili Zhu Wenquan Bao Hongguo Li Qingxin Du Jingle Zhu Hong Yang Shuguang Yang Hui Liu Hui Yue Jiang Hu Suoliang Yu Yu Tian Fan Liang Jingjing Hu Depeng Wang Ruiwen Gao Dejun Li Hongyan Du | 2018 | Molecular Plant2018，11，3： | 24 |
| 3 | Synthetic hexaploid wheat and its utilization for wheat genetic improvement in China显示文摘Synthetic hexaploid wheat (Triticum turgidum × Aegilops tauschii) was created to explore for novel genes from T. turgidum and Ae. tauschii that can be used for common wheat improvement. In the present paper, research advances on the utilization of synthetic hexaploid wheat for wheat genetic improvement in China are reviewed. Over 200 synthetic hexaploid wheat (SHW) accessions from the International Maize and Wheat Improvement Centre (CIMMYT) were introduced into China since 1995. Four cultivars derived from these, Chuanmai 38, Chuanmai 42, Chuanmai 43 and Chuanmai 47, have been released in China. Of these, Chuanmai 42, with large kernels and resistance to stripe rust, had the highest average yield (> 6 t/ha) among all cultivars over two years in Sichuan provincial yield trials, outyielding the commercial check cultivar Chuanmai 107 by 22.7%. Meanwhile, by either artificial chromosome doubling via colchicine treatment or spontaneous chromosome doubling via a union of unreduced gametes (2n) from T. turgidum-Ae. tauschii hybrids, new SHW lines were produced in China. Mitotic-like meiosis might be the cytological mechanism of spontaneous chromosome doubling. SHW lines with genes for spontaneous chromosome doubling may be useful for producing new SHW-alien amphidiploids and double haploid in wheat genetic improvement. | Wuyun Yang Dengcai Liu Jun Li Lianquan Zhang Huiting Wei Xiaorong Hu Youliang Zheng Zhouhu He Yuchun Zou | 2009 | Journal of Genetics and Genomics2009，36，9： | 18 |
| 4 | Motion simulation and test on threshed grains in tapered threshing and transmission device for plot wheat breeding based on CFD-DEM显示文摘Mechanization of field experiments is the only way to improve crop breeding and seed propagation effects.In order to further clarify and improve the working performance of tapered threshing device for plot breeding,and reduce the remaining seeds in the device,the numerical simulation was carried out on the motion process of materials in the longitudinal-axial tapered cylinder threshing and transmission device of the plot wheat breeding combine harvester based on CFD-DEM method.Simulation results showed that,threshing and transmission of particles and short stalks at axial direction could be realized under the influence of air flow.Meanwhile,the material transference and distribution rule and stream field distribution rule of air flow in the threshing and transmission device were obtained,the variations of velocity and displacement of particles and short stalks with time were obtained;the motion trajectories and forms of particles in different types of retention were also studied.At rotating speed of 1300-1600 r/min for the tapered threshing cylinder in the verification test,the particle retention rate in the enclosure was 0-0.13%,while in the simulation the particle retention rate in the enclosure was 0-0.11%,only a 0.02%difference between them.The results proved a favorable feasibility to simulate the working performance of the tapered threshing and transmission device for plot breeding through gas-solid coupling method. | Fei Dai Xuefeng Song Wuyun Zhao Zhengsheng Han Fengwei Zhang Shilin Zhang | 2019 | International Journal of Agricultural and Biological Engineering2019，12，1： | 16 |
| 5 | Simulation and test on separating cleaning process of flax threshing material based on gas-solid coupling theory显示文摘In order to further clarify and improve the working performance of separating cleaning device of flax threshing material,and study the motion law and characteristics of components of flax threshing material,in this paper,numerical simulation was carried out on the separating cleaning process of flax threshing material based on CFD-DEM method.Simulation results showed that the components of flax threshing material were separated and cleaned under the influence of airflow field,meanwhile,variation curves of quantity and mean velocity of flax seeds in the separating cleaning system were obtained.By referring to streamline distribution of gas-solid coupling,the quantity variation law of components of flax threshing material with time was explored and their motion curves and variation tendency of average velocity were studied.Verification test results showed that the cleaning rate of separating cleaning device for flax threshing material was 92.66%with 1.58%of total separation loss.Compared with simulation results,the test results were 1.34%and 0.93%lower,showing that it is feasible to apply the gas-solid coupling theory and method to simulate the separating and cleaning operation of flax threshing material. | Fei Dai Xuefeng Song Wenjuan Guo Wuyun Zhao Fengwei Zhang Shilin Zhang | 2020 | International Journal of Agricultural and Biological Engineering2020，13，1： | 13 |
| 6 | Relationships of Aegilops tauschii revealed by DNA fingerprints:The evidence for agriculture exchange between China and the West显示文摘从伊朗和 Xinjiang,西方中国,以及它从在中国的 Shaanxi 和河南省省的黄河区域的蔓延的类型的野生的山羊草(Aegilops tauschii Cosson ) 的基因差异和关系被简单顺序重复(SSR ) 分析指纹。在从伊朗的 Aegilops tauschii 就职的基因差异的高水平被观察,并且基因差异的丰富被就职从 Shaanxi,河南省,和 Xinjiang 跟随。Aegilops tauschii 的蔓延的类型在伊朗从不同区域与野类型显示出一种近基因的关系。结果显示在黄河区域发现的蔓延的 Aegilops tauschii 很可能从伊朗被介绍—Aegilops tauschii 的差异中心。在黄河区域发现的蔓延的 Aegilops tauschii 人口可以在时间的各种各样的时期期间从西方和普通小麦(Triticum aestivum L.) 作为杂草种被带进中国的中央部分历史上。这发现经由丝绸道路从西方为普通小麦的介绍提供了充分证据进中国,并且也在在中国和西方之间的农业和另外的相关技术的交换表明了丝绸道路的重要角色。 | Huiting Wei Jun Li Zhengsong Peng Baorong Lu Zhijun Zhao Wuyun Yang | 2008 | Progress in Natural Science:Materials International2008，18，12： | 10 |
| 7 | Wheat genomic study for genetic improvement of traits in China显示文摘Bread wheat(Triticum aestivum L.)is a major crop that feeds 40%of the world’s population.Over the past several decades,advances in genomics have led to tremendous achievements in understanding the origin and domestication of wheat,and the genetic basis of agronomically important traits,which promote the breeding of elite varieties.In this review,we focus on progress that has been made in genomic research and genetic improvement of traits such as grain yield,end-use traits,flowering regulation,nutrient use efficiency,and biotic and abiotic stress responses,and various breeding strategies that contributed mainly by Chinese scientists.Functional genomic research in wheat is entering a new era with the availability of multiple reference wheat genome assemblies and the development of cutting-edge technologies such as precise genome editing tools,highthroughput phenotyping platforms,sequencing-based cloning strategies,high-efficiency genetic transformation systems,and speed-breeding facilities.These insights will further extend our understanding of the molecular mechanisms and regulatory networks underlying agronomic traits and facilitate the breeding process,ultimately contributing to more sustainable agriculture in China and throughout the world. | Jun Xiao Bao Liu Yingyin Yao Zifeng Guo Haiyan Jia Lingrang Kong Aimin Zhang Wujun Ma Zhongfu Ni Shengbao Xu Fei Lu Yuannian Jiao Wuyun Yang Xuelei Lin Silong Sun Zefu Lu Lifeng Gao Guangyao Zhao Shuanghe Cao Qian Chen Kunpu Zhang Mengcheng Wang Meng Wang Zhaorong Hu Weilong Guo Guoqiang Li Xin Ma Junming Li Fangpu Han Xiangdong Fu Zhengqiang Ma Daowen Wang Xueyong Zhang Hong-Qing Ling Guangmin Xia Yiping Tong Zhiyong Liu Zhonghu He Jizeng Jia Kang Chong | 2022 | Science China(Life Sciences)2022，65，9： | 9 |
| 8 | Cadmium pollution enhanced ozone damage to winter wheat:biochemical and physiological evidences显示文摘Combined effects of ozone (O3) and cadmium (Cd) on growth and physiology of winter wheat (Triticum aestivum L.cv.JM22) were determined.Wheat plants were grown without or with Cd and exposed to charcoal-filtered air (< 10 ppb O3) or elevated O 3 (80 ± 5 ppb,7 hr/day) for 20 days.Results showed that O 3 considerably depressed light saturated net photosynthetic rate (-20%),stomatal conductance (-33%),chlorophyll content (-33%),and total biomass (-29%) without Cd.The corresponding decreases were further enhanced by 45%,56%,60% and 59%,respectively with Cd,indicating a synergistic effect of O3 and Cd on wheat.Ozone significantly increased the activity of superoxide dismutase (46%),catalase (48%) and peroxidase (56%).However,great increases in malondialdehyde (MDA) content (2.55 folds) and intercellular CO2 concentration (1.13 folds) were noted in O3 +Cd treatment compared to control.Our findings demonstrated that the increased anti-oxidative activities in wheat plants exposed to O3 +Cd might not be enough to overcome the adverse effects of the combination of both pollutants as evidenced by further increase in MDA content,which is an important indicator of lipid peroxidation.Precise prediction model on O3 damages to crop should be conducted to ensure agricultural production security by considering environmental constraints in an agricultural system in peri-urban regions. | Yong Li Caihong Li Yanhai Zheng Guanglei Wu Tana Wuyun Hong Xu Xinhua He Gaoming Jiang | 2011 | Journal of Environmental Sciences2011，23，2： | 7 |
| 9 | Design and field test of crosswise belt type whole plastic-film ridging-mulching corn seeder on double ridges显示文摘In order to realize seedbed mechanization of whole plastic-film mulching on double ridges and to overcome the difficulty in crosswise belt type soil covering by whole plastic-film,a kind of crosswise belt type whole plastic-film ridging-mulching corn seeder on double ridges was designed in this study.The key components of the sample machine was designed and its working parameters of seedbed soil covering device,crosswise-belt soil covering mechanism and profiling sowing depth adjustment device were determined.After numerical simulation on the film edge and crosswise soil covering by whole plastic-film on double ridges by discrete element method,the velocity and displacement of the oscillating plate,and the variation rule of amount of covered soil with time were explored.Field test results show that,when the advancing velocity of the machine was 0.50 m/s,the qualified rate of soil width covered on film edge of the seedbed reached 96.1%,qualified rate of crosswise soil belt width was 94.5%,qualified rate of soil thickness on seedbed was 95.3%,qualified rate of sowing depth was 89.3%,qualified rate of spacing between crosswise soil belts reached 93.6%,which all met related standards in China and satisfied design requirements,and could realize seedbed mechanization of whole plastic-film mulching on double ridges.Comparison tests on working performances of practical soil covering show a basic consistence with the seedbed soil covering simulation,and verified the effectiveness of the soil covering model built by using discrete element method. | Fei Dai Wenjuan Guo Xuefeng Song Ruijie Shi Wuyun Zhao Fengwei Zhang | 2019 | International Journal of Agricultural and Biological Engineering2019，12，4： | 7 |
| 10 | Synthetic Hexaploid Wheat: Yesterday, Today, and Tomorrow显示文摘 | Aili Li Dengcai Liu Wuyun Yang Masahiro Kishii Long Mao | 2018 | Engineering2018，4，4： | 7 |
| 11 | Cylindrical vector beam-excited frequency-tunable second harmonic generation in a plasmonic octamer显示文摘We report a method to tune the second harmonic generation(SHG) frequency of a metallic octamer by employing cylindrical vector beams as the excitation. Our method exploits the ability to spatially match the polarization state of excitations with the fundamental target plasmonic modes, enabling flexible control of the SHG resonant frequency.It is found that SHG of the octamer is enhanced over a broad band(400 nm) by changing the excitation from the linearly polarized Gaussian beam to radially and azimuthally polarized beams. More strikingly, when subjected to an azimuthally polarized beam, the SHG intensity of the octamer becomes 30 times stronger than that for the linearly polarized beam even in the presence of Fano resonance. | FAJUN XIAO WUYUN SHANG WEIREN ZHU LEI HAN MALIN PREMARATNE TING MEI JIANLIN ZHAO | 2018 | Photonics Research2018，6，3： | 6 |
| 12 | Determination of the coefficient of rolling friction of irregularly shaped maize particles by using discrete element method显示文摘The coefficient of rolling friction is a foundation parameter for conducting particles simulation,however,which of irregularly shaped maize seeds is difficult to measure.Furthermore,the coefficient of rolling friction between the simulation particles and the actual seeds is inconsistent due to the shaped difference of model and different position of gravity center.This paper use two methods to determinate the coefficient of rolling friction based on discrete element method(DEM)and physical experiments.Three types of maize models from five different shaped maize samples(including horse-tooth shape,spherical cone shape,spherical shape,oblate shape,irregular shape)were developed with the help of slice modeling and 3D modeling technology.Aluminum cylinder container is used to arrange the simulation experiments of angle of repose with taking the coefficient of rolling friction as independent variables and the simulation angle of repose as target values.After predicting detailed the coefficient of rolling friction(including horse-tooth shape,spherical cone shape,spherical shape,between horse-tooth shape and spherical cone shape,between horse-tooth shape and spherical shape,between spherical shape and spherical cone shape maize models),and forecasting a unified the coefficient of rolling friction among horse-tooth shape,spherical cone shape and spherical shape maize models,two types of materials(aluminum cylinder container and organic glass container)were used to validate the difference the angle of repose between the simulation maize models and actual maize seeds.Results show the relative error of the angle of repose between the maize models controlled by the coefficient of rolling friction through the detailed method and the actual maize seeds is 0.22%,0.33%in aluminum cylinder,organic glass container,respectively.The relative error of the angle of repose between the simulation maize models controlled by the coefficient of rolling friction through the united method and actual maize seeds is 2.47%,2.97%in aluminum cylinder,organic glass container,respectively.Although the difference of the angle of repose between two method is smaller,the detailed method is better.Moreover,From the accumulation process of the angle of repose we found that the difference on the contacts number between maize models and bottom plate,the change curve of the rotational kinetic energy,the potential energy of maize models controlled by the coefficient of rolling friction through the detailed and the united method are evidently.We can choose a better method to predict the coefficient of rolling friction of maize seeds according to the application situation and investigation objective of irregular maize seeds.The results can provide a theoretical basis for designing and optimizing the structure of the seed-metering machine with DEM. | Linrong Shi Wuyun Zhao Bugong Sun Wei Sun | 2020 | International Journal of Agricultural and Biological Engineering2020，13，2： | 5 |
| 13 | Amino acid profiles and protein quality of Siberian apricot(Prunus sibirica L.)kernels from Inner Mongolia显示文摘Siberian apricot(Prunus sibirica L.)is a traditional nut tree species in East Asia and Siberia and is a possible contribution to healthy diets.However,it has attracted little research attention and information on the nutritional value of its kernel is limited.In this study,the profile,nutritional value and variation of amino acids were investigated in eight provenances.The kernels contained29×10-2 g/g protein and were rich in glutamic acid(26.5%),aspartic acid(11.3%)and arginine(10.1%).They showed higher essential amino acids(EAA)than similar protein values for almonds.The variation coefficients of amino acids ranged from 3.8 to 43.7%,and the levels of seven amino acids were significantly different among the eight provenances.The proportion of essential amino acids to total amino acids and amino acid score were also quite different.Protein was negatively correlated with some amino acids and protein quality values.In conclusion,there were two superior provenances(Wanjiagou and Horinger County)with high EAA contents and protein quality,and could be used in the large-scale development of this species. | Mingyu Yin Tana Wuyun Zhongmao Jiang Jie Zeng | 2020 | Journal of Forestry Research2020，31，4： | 4 |
| 14 | 基于快速响应码的移动增强现实系统的研究显示文摘快速响应码QR(Quick Response Code)是一种信息隐藏量大且使用广泛的编码,通过使用QR码代替传统的增强现实标识,并使用基于灭点的空间校正算法实现对QR码的倾斜校正,提出了一种改进的基于QR码的移动增强现实系统.在此基础上使用ARTool Kit和ZXing开发了原型系统,验证了基于QR码的移动增强现实系统的广泛前景. | 孟昭睿 孙金华 WUYun | 2015 | 韶关学院学报2015，36，2： | 4 |
| 15 | Numerical simulation and analysis of mechanized suppression process of seedbed with whole plastic film mulching on double ridges显示文摘In order to achieve the construction standard of high mechanized performance of the seedbed with whole plastic-film mulching on double ridges,in this study,the forms of suppression failure were analyzed,and the key factors influencing the suppression performance were determined based on the structure of the seedbed suppression device and its working principles.The discrete element method was adopted for numerical simulation on the suppression process of the seedbed with whole plastic film mulching on double ridges;the parameters during the interaction between the suppression device and seedbed soil were extracted and analyzed,such as contact area,sinkage and horizontal traction resistance trend of press wheels on big ridges and furrows of small ridge.Taking the suppression load on big ridges,suppression load on furrows of small ridge,and advancing velocity of the combined operation machine as the independent variables,qualified rate of suppression as the response value,a mathematical model between the test factors and qualified rate of suppression was established,to explore the influence sequence of the factors on suppression qualified rate.The optimal working parameters of the suppression device were finally obtained:the suppression load on big ridges was 40 N,suppression load on furrows of small ridge was 69.8 N and the machine advancing velocity was 0.98 m/s,and the achieved mean value of suppression qualified rate was 92.6%.Field verification test showed that the mean value of suppression qualified rate was 90.3%,a mere difference of 2.3%compared with the simulation result.The actual operation of the sample machine was basically consistent with the simulation process and could reveal the mechanized suppression operation mechanism of the seedbed with whole plastic film mulching on double ridges,indicating that the established DEM model and its parameter setting were relatively accurate and reasonable. | Fei Dai Xuefeng Song Wuyun Zhao Bugong Sun Ruijie Shi Yang Zhang | 2021 | International Journal of Agricultural and Biological Engineering2021，14，1： | 4 |
| 16 | Selective excitation of a three-dimensionally oriented single plasmonic dipole显示文摘We experimentally demonstrate a scheme to deterministically excite a three-dimensionally oriented electric dipole in a single Au nanosphere by using a tightly focused radially polarized beam whose focal field possesses polarization states along three-dimensional(3D) orientations owing to the spatial overlap between longitudinal and radial electric field components. Experiment observations indicate that the orientation of an excited dipole moment gradually changes from out-of-plane to in-plane when the nanosphere is moved away from the beam center, which is reconfirmed by full-wave simulations. Moreover, rigorous calculation based on Mie theory reveals that a reduced effective ambient permittivity accompanies the rotation of the dipole moment, leading to a blue-shifted and narrowed resonance peak. We envision that our results could find applications in detecting the 3D orientation of isolated molecules and benefit the fine manipulation of light–matter interactions at the single-molecule level. | FAJUN XIAO GUANGLIN WANG XUETAO GAN WUYUN SHANG SHIYIN CAO WEIREN ZHU TING MEI MALIN PREMARATNE JIANLIN ZHAO | 2019 | Photonics Research2019，7，6： | 3 |
| 17 | Measurement and simulation of the suspension velocity of flax threshing material using CFD-DEM显示文摘In order to explore the aerodynamics characteristics of flax threshing material,and accurately obtain the movement trajectory of the material of each component in air-screen cleaning,the suspension velocities of flax grains,capsules,short stalks and capsule husks at different stages were measured by means of the suspension velocity device.The experimental results showed that the suspension velocity range was 4.55-8.64 m/s for flax grains,6.46-10.90 m/s for flax capsules,3.23-7.75 m/s for flax short stalks,and 1.06-4.21 m/s for flax capsule shells.Based on the experimental results,the overall interval distribution of each component of flax threshing material and the separation characteristics were discussed and the discrete element model of each component of the flax threshing material was established.Through simulation measurement of angle of repose of the material and the sliding friction angle with steel,the reliability of the established model was verified.The gas-solid coupling method was used to simulate the suspension velocity of each component of the flax threshing material,and the suspension velocity of the four components of flax threshing material was obtained.The simulation measurement results were within the actual measurement range,showing that the test results were basically in line with the simulation results.The simulation on the suspension velocity of different components of flax threshing material based on gas-solid coupling had high precision degree.Therefore,the feasibility of the suspension velocity of the flax threshing material measured in the simulation test based on CFD-DEM coupling was verified. | Fei Dai Wenjuan Guo Xuefeng Song Ruijie Shi Jiangfei Qu Wuyun Zhao | 2021 | International Journal of Agricultural and Biological Engineering2021，14，5： | 2 |
| 18 | Investigation of interaction effect between static and rolling friction of corn kernels on repose formation by DEM显示文摘The coefficient of static friction(SF),the coefficient of rolling friction(RF)for particles are two key parameters affecting the repose angle formation and flow characteristics.In this paper,the interaction effects of SF and RF on the formation process of corn repose angle was investigated by the discrete element method.Firstly,five shape kinds of corn models(horse tooth,spherical cone,spheroid,oblate,and irregular shape)were established.Secondly,aluminum cylinder and organic glass box were used to conduct the simulation experiments with taking SF and RF as independent factors and seeing the repose angle as dependent value.Based on simulation results the regression equations were established.Simulation results showed the relation between two factors and the rotational kinetic energy is not nonlinear,and SF does not significantly restrict the flow of corn models after increasing the flow direction,and the effect of SF on the contact number between corns and the bottom plate is remarkable,while the effect of RF on the contact number is not remarkable.Finally,the interaction effect of two factors on the repose angle was analyzed by variance analysis and results showed SF and RF all have a significant impact on the repose angle.Moreover,their interaction effect has an impact on the repose angle. | Linrong Shi Xiaoping Yang Wuyun Zhao Wei Sun Guanping Wang Bugong Sun | 2021 | International Journal of Agricultural and Biological Engineering2021，14，5： | 2 |
| 19 | Mechanism analysis and performance improvement of mechanized ridge forming of whole plastic film mulched double ridges显示文摘In order to achieve high-performance and mechanization construction standard of whole plastic mulched double ridge seedbed,and to meet its forming process and corresponding agronomic requirements of the mechanized double ridge seedbed,the key working parameters such as the speed of rotary blade group,the thickness of upturned sod and the power consumption of rotary blade group under different parameters were analyzed based on related working performance in ridge forming.Also,the test factors and their range of values were finally determined in this study.Discrete element method(DEM)simulation was applied in the numerical simulation of the mechanized ridge forming process of whole plastic mulched double ridges,and the ridge forming effect and digging resistance variation characteristics of different types of shovels were compared.Taking the forward speed of the combined machine,the penetration angle of the arc-shaped shovel and the depth of rotary tillage as independent variables,and the qualified rate of seedbed tillage as the response value,the mathematical model between the test factors and the qualified rate of the seedbed tillage was established,to explore the influence sequence of the factors on the qualified rate of seedbed tillage,and obtained the following optimal working parameters of the ridge forming device:the advancing velocity of the combined machine of 0.50 m/s,penetration angle of the arc-shaped shovel of 31°,rotary tillage depth of 140 mm,and average qualified rate 95.20%of seedbed tillage in corresponding simulation verification test.Field test showed that the average qualified rate of seedbed tillage in ridge forming device was 93.60%,which was close to that of the simulation results.The actual working condition of the sample machine was basically in line with the simulation process and could relatively precisely reflect the mechanized ridge forming mechanism of whole plastic double ridges.The results showed that the established DEM model and its parameter setting were relatively accurate and reasonable. | Fei Dai Xuefeng Song Wuyun Zhao Ruijie Shi Fengwei Zhang Xuekun Zhang | 2020 | International Journal of Agricultural and Biological Engineering2020，13，5： | 2 |
| 20 | Genome-wide screening of long non-coding RNAs involved in rubber biosynthesis in Eucommia ulmoides显示文摘Increasing evidence indicates that long noncoding RNAs(lncRNAs) play pivotal roles in regulatory networks controlling plant and animal gene expression.However, lncRNA roles in regulating rubber biosynthesis in Eucommia ulmoides, an emerging source of natural rubber(Eu-rubber), are currently unknown. Here, we report on RNA deep-sequencing of E. ulmoides fruits at two developmental stages. Based on application of a stringent pipeline, 29,103 lncRNAs and 9,048 transcripts of uncertain coding potential(TUCPs) were identified. Two differentially expressed(DE) TUCPs appear to simultaneously regulate 12 protein-coding genes involved in Eu-rubber biosynthesis(GIEBs), as well as 95 DE genes. Functional categorization of these 95 DE genes indicated their involvement in subcellular microstructures and cellular processes, such as cell wall, celldivision, and growth. These DE genes may participate in the differentiation and development of laticifers, where Eu-rubber is synthesized. A model is proposed in which'commanders'(DE TUCPs) direct the 'builders'(DE genes) to construct a 'storehouse' of materials needed for Eu-rubber synthesis, and the 'workers'(GIEBs) to synthesize Eu-rubber. These findings provide insights into both cis-and trans-polyisoprene biosynthesis in plants,laying the foundation for additional studies of this crucial process. | Huimin Liu Yan Lu Juan Wang Jingjing Hu Tana Wuyun | 2018 | Journal of Integrative Plant Biology2018，60，11： | 2 |
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