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Postulation of Seedlings Resistance Genes to Yellow Rust in Commercial Wheat Cultivars from Yunnan Province in China

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Agricultural Sciences in China 2011年第11期10卷 1723-1731页

作者： LI ming-ju FENG Jing CAo shi-qin LIN Rui-ming CHENG Geng CHEN Wan-quan XU shi-chang State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of AgriculturalSciences Beijing 100193 P.R.China Institute of Environment and Resources Yunnan Academy of Agricultural Sciences Kunming 650205 P.R.China Institute of Plant Protection Gansu Academy of Agricultural Sciences Lanzhou 730070 P.R.China Institute of Food Crops Yunnan Academy of Agricultural Sciences Kunming 650205 P.R.China

The objective of this study was to characterize yellow （stripe） rust resistance gene（s） in 52 commercial wheat cultivars from Yunnan Province in China, and to provide information for their rational deployment in field. Seedlings of wheat cultivars were inoculated with 25 differential isolates ofPuccinia striiformis from foreign and home to postulate resistance genes to yellow rust, and then validated by pedigree. There were 10 probable resistance genes characterized in these cultivars, in which, Yr9 was most commonly postulated to be present in thirteen cultivars. Yr21, the second, was present in four cultivars. Yr8, the third, were present in three cultivars. Yr6, Yrl 7 and Yr26, the fourth, was present in two cultivars respectively. The other gene（s） such as, Yr2＋YrA, Yr7 and Yr27, were only present in single cultivar（s）; unknown gene（s） or gene（s） combination（s） were present in 22 cultivars. One cultivar （Yunmai 42） had no resistance gene tested in this study. Cultivars such as Yunmai 52, Mian 1971-98, Kunmai 4, and Yunmai 56 carried effective genes and can be popularized mainly; Yr9 should be planted with other Yr genes. In the meantime other effective genes should be introduced to realize gene diversity for controlling wheat yellow rust. Yunmai 42 should be reduced to avoid rust breakout. Unknown gene cultivars should be utilized and be researched deeply.

关键词： wheat cultivars yellow (stripe) rust resistance genes gene postulation

ANALYTICAL AND EXPERIMENTAL INVESTIGATION OF FLOW DISTRIBUTION IN MANIFOLDS FOR HEAT EXCHANGERS

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Journal of Hydrodynamics 2008年第2期20卷 179-185页

作者： LU Fang LUO Yong-hao YANG shi-ming School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200240 China

The prediction of flow distribution in flow manifolds is important for the design of heat exchangers. The pressure drop along the flow in the header is the most influential factor in flow distribution. Various continuous models available in literature have failed to satisfactorily predict the pressure distribution in the headers of the flow manifolds. In this article, a discrete model matching the real physical phenomena has been proposed, to predict the pressure distribution in headers. An experimental evaluation of relevant flow characteristic parameters has been carried out to support the discrete model calculations. The validity of the theoretical discrete model has been performed with experimental results, under specific conditions. Refined experimental probes, for pressure heads with ultrasonic measuring devices, have been used to obtain accurate results. The experimental results fully substantiate the soundness of the theoretical prediction. In addition, the advantage of the ability to accommodate local disturbances in the discrete model has been pointed out. The effect of some local disturbances may be substantial. As a result of the analysis presented in this article, improved designs of flow manifolds in heat exchangers can be realized, to assure operation safety under severe operating conditions.

关键词： heat exchanger flow distribution flow manifold discrete model

Feasibility of measuring moisture content of green sand by a low frequency multiprobe detector based on dielectric characteristics

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China Foundry 2023年第3期20卷 197-206页

作者： De-quan shi Gui-li Gao ming Sun Ya-xin Huang School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China School of Mechanical and Energy Engineering Shanghai Technical Institute of Electronics and InformationShanghai 201411China School of Materials Science&Chemical Engineering Harbin University of Science and TechnologyHarbin 150040China

Green sand is a mixture of silica sand,bentonite,water and coal powder,and other *** content is an important index to characterize the properties of green *** on the dielectric characteristics of green sand and transmission line theory,a method for rapidly measuring the moisture content of green sand by means of a low frequency multiprobe detector was proposed.A system was constructed,where six detectors with different arrangements and probes were *** experimental results showed that the voltage difference of transmission line increases with the increasing frequency before 29 MHz while decreases after 35 MHz.A voltage difference platform occurs in the range of 29-35 MHz,which is suitable for measuring the moisture content due to its insensitivity to *** electric field intensity gradually decreases with the increase of the probe depth,and the intensity of central probe is always greater than that of the edge *** the distance of the probe away from the sand sample surface is 80 mm,the electric field intensity of the edge probe is found to be very *** optimal excitation frequency for measuring the moisture content of green sand is 29-33 *** optimal detector is the one with one center probe and three edge probes,and their lengths are 80 mm and 60 mm,*** distance between the center and edge probes is 25 mm,and the diameter of probes is 5 *** the voltage difference of transmission line,bentonite content,coal powder content and compactability as parameters of the input layer,and the moisture content as a parameter of the output layer,a three-layer BP artificial neural network model for predicting the moisture content of green sand was constructed according to the experimental results at 33 *** prediction error of the model is not higher than 3.3% when the moisture content of green sand is within the range of 3wt.%-7wt.%.

关键词： green sand dielectric property moisture content multiprobe detector BP artificial neural network model

Research on the influence of quadrupole deformation and continuum effects on the exotic properties of 15,17,19B with the complex momentum representation method

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Nuclear Science and Techniques 2023年第2期34卷 98-108页

作者： Xue‑Neng Cao Xian‑Xian Zhou ming Fu Xin‑Xing shi School of Management Science and Engineering Anhui University of Finance and EconomicsBengbu 233030China School of Mechanics and Optoelectronic Physics Anhui University of Science and TechnologyHuainan 232001China

The properties of exotic nuclei are the focus of the present ***-neutron halo structures of neutron-rich17,19B were experimentally *** studied the formation mechanism of halo phenomena in17,19B using the complex momentum representation method applied to deformation and continuum *** examining the evolution of the weakly bound and resonant levels near the Fermi surface,s–d orbital reversals and certain prolate deformations were *** addition,by analyzing the evolution of the occupation probabilities and density distributions occupied by valence neutrons,we found that the ground state of15B did not exhibit a halo and the ground states of17B and19B exhibited halos at 0.6≤β2≤0.7 and0.3≤β2≤0.7,*** low-l components in the valence levels that are weakly bound or embedded in the continuous spectrum lead to halo formation.

关键词： Quadrupole deformation Resonant states Complex momentum representation Halo

Design and Experimental Study of A Pile-Based Breakwater Integrated with OWC Chamber

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China Ocean Engineering 2021年第3期35卷 443-453页

作者： QU ming YU Ding-yong DOU Zhi-hao WANG shi-lin College of Engineering Ocean University of ChinaQingdao 266100China

A structure scheme of a pile-based breakwater with integrated oscillating water column(OWC)energy conversion chamber was proposed,and four structure forms had been *** on the physical test,the variations of the reflected wave height,the transmitted wave height,the air velocity at the outlet of the chamber,the air pressure and the wave height in the air chamber were studied under the conditions of different wave heights,periods,with or without elliptical front wall and the baffles on both sides of the ***,based on the results,the changes and relationship between the wave-eliminating effect and energy conversion effect of the scheme were *** general,it turns out,the transmission coefficients of the four structure forms are kept below ***,the transmission coefficients of the structural forms G2,G3,and G4 were all smaller than 0.4,and it is only 0.1 at its ***,in general,the structure form G4 has the best wave-eliminating and energy conversion *** the same time,when the wave steepness is 0.066,the energy conversion and wave dissipation effect of the four structure forms is the *** research results could be provided as the reference for the design structure selection of pile-based breakwater with integrated OWC energy conversion chamber.

关键词： wave energy conversion breakwaters energy efficiency power transmission pile-based breakwaters oscillating water column

纤维乳管镜联合癌胚抗原在诊治乳头溢液疾病中应用

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中外医疗 2019年第13期38卷 5-7,11页

作者：史明明宋以宁邵光东刘锦霞马晓东李国楼潍坊市中医院甲乳外科

目的研究纤维乳管镜联合癌胚抗原在诊治乳头溢液疾病中应用。方法方便选取2016年10月—2017年12月在该院治疗的乳头溢液患者80例,选取同期来该院进行健康体检的产妇40名为对照组,对比两组人员的疾病分布、溢液性质、癌胚抗原水平以及检... 详细信息

目的研究纤维乳管镜联合癌胚抗原在诊治乳头溢液疾病中应用。方法方便选取2016年10月—2017年12月在该院治疗的乳头溢液患者80例,选取同期来该院进行健康体检的产妇40名为对照组,对比两组人员的疾病分布、溢液性质、癌胚抗原水平以及检测结果。结果纤维乳管镜下双侧溢液与单侧溢液患者的乳管癌、乳管扩张及炎症以及乳头状瘤等疾病所占比例差异无统计学意义(χ^2=1.794、1.391、2.125,P=0.061、0.068、0.057);乳管癌主要为血性溢液,乳管扩张及炎症主要为乳汁样溢液,乳头状瘤主要为浆液性溢液,乳头状瘤病主要为浆液性溢液,差异有统计学意义(χ^2=5.064、5.944、4.538、6.068,P=0.043、0.041、0.045、0.047);研究组患者的血清及乳头溢液中癌胚抗原水平(9.83±3.35)μg/L、(23.19±11.04)ng/mL均明显于高于对照组(9.57±2.93)μg/L,(12.68±3.48)ng/mL,差异有统计学意义(t=14.345、15.475,P=0.047、0.042);对照组人员乳头溢液中癌胚抗原主要为阴性,研究组患者乳头溢液中癌胚抗原主要为阳性和强阳性,差异有统计学意义(χ^2=6.124、5.532、6.534、5.946,P=0.036、0.044、0.032、0.041)。结论在乳头溢液的诊治过程中,通过纤维乳管镜可以直观、准确的了解乳头溢液的病变范围、病因以及病变部位,癌胚抗原检测是乳头溢液早期诊断的一种辅助方法,纤维乳管镜联合癌胚抗原能够提高乳头溢液的检出率,因此临床上应当进一步的推广与应用。

关键词：纤维乳管镜诊断治疗癌胚抗原乳头溢液疾病

Prevention and forecasting of rock burst hazards in coal mines

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Mining Science and Technology 2009年第5期19卷 585-591页

作者： DOU Lin-ming LU Cai-ping MU Zong-long GAO ming-shi State Key Laboratory for Coal Resource and Mine Safety China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Rock bursts signify extreme behavior in coal mine strata and severely threaten the safety of the lives of miners, as well as the effectiveness and productivity of miners. In our study, an elastic-plastic-brittle model for the deformation and failure of coal/rock was established through theoretical analyses, laboratory experiments and field testing, simulation and other means, which perfectly predict sudden and delayed rock bursts. Based on electromagnetic emission (EME), acoustic emission (AE) and microseism (MS) effects in the process from deformation until impact rupture of coal-rock combination samples, a multi-parameter identification of premonitory technology was formed, largely depending on these three forms of emission. Thus a system of classification for forecasting rock bursts in space and time was established. We have presented the intensity weakening theory for rock bursts and a strong-soft-strong (3S) structural model for controlling the impact on rock surrounding roadways, with the objective of laying a theoretical foundation and establishing references for parameters for the weakening control of rock bursts. For the purpose of prevention, key technical parameters of directional hydraulic fracturing are revealed. Based on these results, as well as those from deep-hole controlled blasting in coal seams and rock, integrated control techniques were established and anti-impact hydraulic props, suitable for roadways subject to hazards from rockbursts have also been developed. These technologies have been widely used in most coal mines in China, subject to these hazards and have achieved remarkable economic and social benefits.

关键词： rock bursts elastic-plastic-brittle model multi-parameter premonitory intensity weakening strong-soft-strong (3S) structure directional hydraulic fracturing anti-impact hydraulic prop

Viewing the current situation of pig model application in China’s medical field from the application and funding of NSFC

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Journal of Otology 2021年第1期16卷 34-39页

作者： Xiao Bin Zhang shi-ming Yang Department of Health Sciences National Natural Science Foundation of ChinaChina College of Otolaryngology Head and Neck Surgery Chinese PLA General HospitalChinese PLA Medical SchoolNo.28 Fuxing RoadBeijing100853China National Clinical Research Center for Otolaryngologic Diseases Beijing100853China State Key Lab of Hearing Science Ministry of EducationBeijing100853China Beijing Key Lab of Hearing Impairment Prevention and Treatment Beijing100853China

Background:The National Natural Science Foundation of China(NSFC)is an important part of China’s innovation *** the last decade,the pig has become more and more widely used in the field of medical science,especially in otology ***:By analyzing and summarizing the funding information over recent years,we intend to identify the characteristics and trends of funding for research using pig models and provide references for future *** and methods:This is a comprehensive analysis of features in funding for research projects involving pig models by the NSFC in the past 10 years,with a focus on projects in the field of otolaryngology/head and neck ***:Both the number and amount of funding provided by the NSFC for research involving pig models are on the rise with each passing *** at the PLA General Hospital have completed a number of studies using miniature pigs in cochlear morphology,electrophysiology,cochlear implantation,cochlear transcription analysis,gene therapy,inner ear disease modeling and Eustachian tube pathology ***:Pigs as an ideal large mammal model are well suited in the current national basic research strategy in China,and can help further strengthen China’s leading position in basic research in the world.

关键词： Animal model National natural science foundation Otolaryngology

5种药剂对桑尼短体线虫的毒力测定和室内防效

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草原与草坪 2024年第4期44卷 204-210页

作者：乔万强刘永刚石明明魏雪娟安丽婷吴锦李惠霞甘肃农业大学植物保护学院甘肃省农作物病虫害生物防治工程实验室甘肃兰州730070 甘肃省农业科学院植物保护研究所甘肃省无公害农药工程实验室甘肃兰州730070

【目的】筛选有效防治桑尼短体线虫(Pratylenchus thornei)的药剂,为燕麦短体线虫病的科学防治和安全生产提供参考。【方法】在室内条件下分别采用浸渍法和盆栽灌根法测定5种药剂对桑尼短体线虫的毒力和防效。【结果】5种药剂中41.7%氟... 详细信息

【目的】筛选有效防治桑尼短体线虫(Pratylenchus thornei)的药剂,为燕麦短体线虫病的科学防治和安全生产提供参考。【方法】在室内条件下分别采用浸渍法和盆栽灌根法测定5种药剂对桑尼短体线虫的毒力和防效。【结果】5种药剂中41.7%氟吡菌酰胺SC对桑尼短体线虫毒力最强,LC_(50)为1.115 7 mg/L;2.5%高效氯氰菊酯EW毒力最低,LC_(50)为68.454 5 mg/L。41.7%氟吡菌酰胺SC和40%氟烯线砜EC灌根处理45 d后的线虫减退率分别为94.07%和97.07%,防效分别为84.67%和92.42%。【结论】41.7%氟吡菌酰胺SC和40%氟烯线砜EC对桑尼短体线虫的防效最好,建议在燕麦生产中推广应用。

关键词：燕麦桑尼短体线虫毒力测定防效