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| 1 | Study on Phosphating by Ultrasonic Wave at Room Temperature for Sintered NdFeB Magnet显示文摘The corrosion behavior of a NdFeB magnet obtained at room temperature,with and without ultrasonic were investigated.The corrosion resistance was investigated by corrosion immersion tests in 3 wt%neutral NaCl solutions,potentiodynamic polarization tests and electrochemical impedance spectroscopy(EIS).The morphology of the conversion coatings on NdFeB surface were analyzed by scanning electron microscopy(SEM).And the forming mechanism of coatings was studied by potential-time curves.The tests of corrosion resistances show that the combination of phosphating treatment with ultrasonic will further improve the corrosion resistance of the NdFeB.The SEM also confirms that phosphating coating under ultrasonic is more homogeneous and compact. | Sun Shuo Zhang Youping Yu Xintong Wang Yong Lou Guiyan | 2012 | 稀有金属材料与工程2012，41，S1： | 2 |
| 2 | Seedling Emergence,Growth,and Mineral Nutrition of Ornamental Chile Peppers Irrigated with Saline Water显示文摘 | Niu Genhua Osuna P Sun Youping | 2012 | HortScience2012，47，11： | 1 |
| 3 | Experiences and Lessons of Combating COVID-19 that Chinese Experts Shared with the World显示文摘At the end of 2019,a novel viral pneumonia was detected in Wuhan City(1)and has spread rapidly throughout 215 countries,areas,and territories with more than 3.8 million cases and over 260,000 deaths as of May 8,2020.This pneumonia,later named coronavirus disease 2019(COVID-19),has become a global public security challenge. | Tao Liu Jiufeng Sun Miaoyun Wen Youping Zhang Xiaodan Luo Xiangxin Liu Shifang Yang Jun Li | 2020 | China CDC weekly2020，2，43： | 1 |
| 4 | Effect of heat-treatment on microstructure and properties of SiC particulate-reinforced aluminum matrix composite 显示文摘 | Sun Youping Yan Hongge Chen Zhenhua | 2007 | Trans Nonferrous Met Soc China2007，，1： | 1 |
| 5 | Multiclassification algorithm and its realization based on least square support vector machine algorithm显示文摘As a new type of learning machine developed on the basis of statistics learning theory, support vector machine (SVM) plays an important role in knowledge discovering and knowledge updating by constructing nonlinear optimal classifier. However, realizing SVM requires resolving quadratic programming under constraints of inequality, which results in calculation difficulty while learning samples gets larger. Besides, standard SVM is incapable of tackling multiclassification. To overcome the bottleneck of populating SVM, with training algorithm presented, the problem of quadratic programming is converted into that of resolving a linear system of equations composed of a group of equation constraints by adopting the least square SVM(LSSVM) and introducing a modifying variable which can change inequality constraints into equation constraints, which simplifies the calculation. With regard to multiclassification, an LSSVM applicable in multiclassification is deduced. Finally, efficiency of the algorithm is checked by using universal Circle in square and twospirals to measure the performance of the classifier. | Fan Youping Chen Yunping Sun Wansheng Li Yu | 2005 | Journal of Systems Engineering and Electronics2005，16，4： | 0 |
| 6 | Host-induced gene silencing of multiple pathogenic factors of Sclerotinia sclerotiorum confers resistance to Sclerotinia rot in Brassica napus显示文摘Sclerotinia sclerotiorum is generally considered one of the most economically damaging pathogens in oilseed rape(Brassica napus).Breeding for Sclerotinia resistance is challenging,as no immune germplasm available in B.napus.It is desirable to develop new breeding strategies.In the present study,hostinduced gene silencing(HIGS),developed based on RNA interference(RNAi),was applied to protect B.napus from S.sclerotiorum infection.Three pathogenicity genes,the endo-polygalacturonase gene(Ss PG1),cellobiohydrolase gene(Ss CBH),and oxaloacetate acetylhydrolase gene(Ss OAH1),were chosen as HIGS targets.Co-incubation of synthesized double-stranded RNAs(ds RNAs)with S.sclerotiorum in liquid medium significantly reduced the transcript levels of the target genes.Application to plant surfaces of ds RNA targeting the three genes conferred effective protection against S.sclerotiorum.Stable transgenic B.napus plants expressing small interfering RNAs with sequence identity to Ss PG1,Ss CBH,and Ss OAH1 were generated.HIGS transgenic B.napus prevented the expression of S.sclerotiorum target genes,slowed pathogenicity-factor accumulation,impeded fungal growth,and suppressed appressorium formation,thereby conferring resistance to S.sclerotiorum.Simultaneous silencing of Ss PG1,Ss CBH,and Ss OAH1 by stable expression of a chimeric hairpin RNAi construct in B.napus led to enhanced protection phenotypes(with disease lesion size reduced by 36.8%–43.7%).We conclude that HIGS of pathogenic-factor genes of S.sclerotiorum is a promising strategy for controlling Sclerotinia rot in oilseed rape. | Jian Wu Shengliang Yin Li Lin Dongxiao Liu Sichao Ren Wenjing Zhang Wencheng Meng Peipei Chen Qinfu Sun Yujie Fang Cunxu Wei Youping Wang | 2022 | The Crop Journal2022，10，3： | 0 |
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