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| 1 | Rapeseed research and production in China显示文摘Rapeseed(Brassica napus L.) is the largest oilseed crop in China and accounts for about 20% of world production.For the last 10 years,the production,planting area,and yield of rapeseed have been stable,with improvement of seed quality and especially seed oil content.China is among the leading countries in rapeseed genomic research internationally,having jointly with other countries accomplished the whole genome sequencing of rapeseed and its two parental species,Brassica oleracea and Brassica rapa.Progress on functional genomics including the identification of QTL governing important agronomic traits such as yield,seed oil content,fertility regulation,disease and insect resistance,abiotic stress,nutrition use efficiency,and pod shattering resistance has been achieved.As a consequence,molecular markers have been developed and used in breeding programs.During 2005–2014,215 rapeseed varieties were registered nationally,including 210 winter-and 5 spring-type varieties.Mechanization across the whole process of rapeseed production was investigated and operating instructions for all relevant techniques were published.Modern techniques for rapeseed field management such as high-density planting,controlled-release fertilizer,and biocontrol of disease and pests combined with precision tools such as drones have been developed and are being adopted in China.With the application of advanced breeding and production technologies,in the near future,the oil yield and quality of rapeseed varieties will be greatly increased,and more varieties with desirable traits,especially early maturation,high yield,high resistance to biotic and abiotic stress,and suitability for mechanized harvesting will be developed.Application of modern technologies on the mechanized management of rapeseed will greatly increase grower profit. | Qiong Hu Wei Hua Yan Yin Xuekun Zhang Lijiang Liu Jiaqin Shi Yongguo Zhao Lu Qin Chang Chen Hanzhong Wang | 2017 | The Crop Journal2017，5，2： | 25 |
| 2 | Compositional dependence of microstructure and tribological properties of plasma sprayed Fe-based metallic glass coatings显示文摘Gas-atomized powders of three Fe-based glass-forming alloys were sprayed on mild steel substrates by atmospheric plasma spaying using the same spaying parameters. Microstructures, thermal stabilities and tribological properties of the sprayed coatings were analyzed. The coating performances showed a strong dependence on the intrinsic characters of the compositions, i.e., glass-forming ability (GFA) and supercooled liquid region (?Tx). The coatings tended to exhibit higher amorphous phase fraction for the composition with higher GFA and lower porosity for that with larger ?Tx. All the coatings exhibited superior wear resistance compared with the substrate. Higher wear resistance could be obtained in coatings with higher amorphous phase fraction, i.e. higher GFA of the composition. This study has important implications for composition selecting and optimizing in the fabrication of metallic glass coatings. | YANG Qin LI Ran LIU ZengQian SHI MinJie LUO XueKun ZHANG Tao | 2012 | Science China(Technological Sciences)2012，55，5： | 4 |
| 3 | Determination of dioxin-like polychlorinated biphenyls in soil and moss from Fildes Peninsula,Antarctica显示文摘Dioxin-like polychlorinated biphenyls(PCBs) are a class of toxic and persistent chemicals that are often found in the environment.The determination of dioxin-like PCBs in Fildes Peninsula,Antarctica,is reported in this paper.Dioxin-like PCBs were widely distributed in Antarctic soil and moss with concentration of 2.23-27.2 pg/g in soil and 10.4-812 pg/g in moss.The highest concentrations were found in the Ardley Island area and the lowest concentrations on the west coast.The contribution of PCB-118 to the ∑12PCBs ranged from 36.0% to 69.6% in soil,and 17.2% to 43.4% in moss.The congener specific patterns in soil and moss were similar.Long-range atmospheric transport is thought to be the main source of PCBs detected on King George Island.The ∑12PCBs toxic equivalent(TEQ) in soil was 0.400×10?3 to 516×10?3 pg(TEQ)/g with a mean value of 147×10?3 pg(TEQ)/g.PCB-126 had the largest contribution(81.1%) to the ∑12PCBs TEQ in soil.The ∑12PCBs TEQ in moss ranged from 2.90×10?3 to 1.19 pg/g with a mean value of 0.482 pg/g.PCB-126 was also the largest contributor(91.4%) to the ∑12PCBs TEQ in moss.The mean TEQ in moss was about 40 times that in soil. | WANG Qiang SHI YeHong HU JianXin YAO ZiWei FANG XueKun DONG YiAn | 2012 | Chinese Science Bulletin2012，57，9： | 3 |
| 4 | 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 |
| 5 | Microstructural tailoring and improvement of mechanical properties in CuZr-based bulk metallic glass composites显示文摘 | Zengqian Liu Ran Li Gang Liu Wenhuang Su Hui Wang Yan Li Minjie Shi Xuekun Luo Guojuan Wu Tao Zhang | 2012 | 2012 (6-7)2012，，6： | 1 |
| 6 | Comparative study on PCDD/F pollution in soil from the Antarctic, Arctic and Tibetan Plateau显示文摘 | Shenglan Jia Qiang Wang Li Li Xuekun Fang Yehong Shi Weiguang Xu Jianxin Hu | 2014 | Science of the Total Environment2014，，： | 1 |
| 7 | Gridded usage inventories of chlordane in China显示文摘Abstract Chlordane (1,2,4,5,6,7,8,8-octachloro-3a,4,7, 7a-tetra-hydro-4,7-methanoindane) is one of organochlor- ine pesticides (OCPs) which has been listed as one of the persistent organic pollutants (POPs) to be reduced and finally eliminated in the Stockholm Convention on Persistent Organic Pollutants, because of its great persistence, toxicity, bio-accumulation and long-range transport potential. It is critical to create a national chlordane usage inventories for China to compile chlordane emission inventories, which is helpful for carrying out risk assessments and other researches related to chlordane in China. The annual data of chlordane usage was calculated and modified in accordance with the reported annual production of chlordane which was caculated on the basis of the termite distribution, the data of chlordane usage rate and the annual new construction area (NCA). With the help of Geographic Information System, the usage data of this NCA were allocated to a grid system then, with a 1/4° longitude by 1/6°latitude resolution and a size for each grid cell of approximately 25 km by 25 km. Between 1988 and 2008, the total usage of chlordane in China was 2745 t, accounting for approximately 80% of the production in the same period. Zhejiang Province was the largest consumer of chlordane in China, whose usage adds up to 980 t, greatly exceeding other provinces/regions, followed by Jiangsu Province (534 t) and Sichuan Province (428 t). The region with the least usage of chlordane was Beijing. Provinces of Guizhou, Henan and Hebei did not use any chlordane, even though termites had occurred in these provinces. Gridded usage inventories showed that the intensive use of chlordane was concentrated in the southeast part of China, Yangtze River Delta and Pearl River Delta in particular. The satisfaction of the inventories was supported by the consistence between the estimated data of annual usage and the reported annual production of chlordane, and by the consistence between distribution pattern of chlordane's usage and ambient air concentration. | Qiang WANG Lijuan ZHAO Xuekun FANG Jianhua XU Yifan LI Yehong SHI Jianxin HU | 2013 | Frontiers of Environmental Science & Engineering2013，7，1： | 0 |
| 8 | Role of fractional flow reserve in guiding intervention for borderline coronary lesions显示文摘Objective:This study investigated the clinical efficacy and value of fractional flow reserve(FFR)in guiding the treatment of borderline coronary lesions.Methods:Forty-three patients with borderline coronary lesions,as demonstrated by coronary angiography,and who had FFR measurements were selected.The patients were grouped accord-ing to FFR values.All patients were evaluated 6 months after surgery to record major adverse cardiac events(MACE[sudden cardiac death,non-fatal myocardial infarction,or revasculariza-tion])and recurrence of angina pectoris.Results:After the 6-month follow-up,no sudden cardiac deaths or myocardial infarctions occurred in either group,and there were no statistically significant differences(P>0.05).Inter-group comparisons showed that in the groups with a FFR<0.75,the recurrence rate of angina pectoris in the PCI group was significantly lower than the drug therapy group(0.08%vs.0.27%,P<0.05).In contrast,the recurrence rate of angina pectoris in the PCI group among the groups with a FFR<0.75 revealed no statistical significance when compared to the groups with a FFR≥0.75(0.08%vs.0.05%,P>0.05).The recurrence rate of angina pectoris in the simple drug therapy group among the groups with a FFR<0.75 was higher than the same groups with a FFR≥0.75(0.27%vs.0.05%,P<0.05).Conclusion:When coronary intervention is used to treat borderline lesions,guiding inter-ventional therapy with measurement of FFR does not increase the incidence of adverse cardiovas-cular events in the short term and can better guide PCI therapy. | Xuekun Shi Lu Cheng | 2014 | Family Medicine and Community Health2014，2，3： | 0 |
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