防治西瓜和籽瓜根病的胶悬剂及缓释性片剂的研究

利用合成粘胶剂和天然粘胶剂混合配制的胶悬剂成膜添加剂，加入对瓜枯萎镰刀菌、疫霉菌杀灭效果良好的杀菌剂及多种营养元素配制成防治瓜类根病的种衣剂．利用筛选出的杀菌剂加入磷酸二氢钾、稀土元素、微量元素和缓释性添加剂，混合后压成片剂，用于防治瓜类枯萎病和疫霉病．室内平。抑菌测定证实在土中埋了３５～６０天的片剂仍有一定抑菌效果，田间小区及大田施药结果表明，对枯萎病防治获得良好效果．田间施药一次，药效可达５０天左右．胶悬剂与缓释性片剂配合使用防治效果可达９１．３％．     

马铃薯晚疫病防治的药剂筛选试验研究

2007年在凉山州冕宁县马铃薯主产区开展了687．5g／L银法利SE、70%安泰生WP、58％甲霜灵．锰锌WP、25％甲霜灵WP四种杀菌剂防治马铃薯晚疫病的田间药效试验。试验表明,四种药剂对马铃薯晚疫病均有有明显的防治效果,其中687．5g／L银法利SE防病增产效果最佳。     

完全成熟芒果贮藏期间病害防治研究

连续5年，用过氧乙酸和自制的中草药提取液作为杀菌剂。对完全成熟芒果果实贮藏期间病害防治进行试验，结果表明：分别用过氧乙酸和中草药提取液处理后的芒果，能有效地抑微生物侵蚀，防止芒果病害．在23℃～37℃，RH=60％～84％条件下，贮存31天，平均发病率分别为12．4％和10．7％．     

籽瓜疫病化学防治药剂筛选

通过8种进口杀菌剂和1种国产杀菌剂的室内毒力测定，筛选出64％杀毒矾、72％杜邦克露和50％倍得利对籽瓜疫病抑菌力最强，EC50分别为2．3092μg／ml、7．9795μg／ml和7．9807μg／ml、EC95分别为39．1720μg／ml、147．5341μg／ml和56．8432μg／ml。田问防效试验结果表明。64％杀毒矾、50％倍得利和72％杜邦克露800倍液能有效防治籽瓜疫病，籽瓜果实膨大期喷施2次，防效均在76％以上。     

三种杀菌剂对灰葡萄孢菌的毒力测定

采用培养皿滤纸抑菌圈法，测定三种杀菌剂（利得，克露，速克灵）不同浓度对灰葡萄孢菌的抑菌能力。结果表明：三种杀菌浓度在５１２０ｍｇ／Ｌ时，对灰葡萄孢菌的抑制率利得为７１．３３％，速克灵为５９．６７％，克露为３４．６７％，２０ｍｇ／Ｌ时三种药物的抑菌平均为零。抑菌效果以利得最高，是速克灵的１．１２倍，克露的２．８５倍。     

氧化石墨烯基纳米杀菌剂新剂型研制及其在黄瓜枯萎病防治中的应用

为更好的防治黄瓜枯萎病,以氧化石墨烯为载体,与甲霜灵、恶霉灵分别进行复配,制备出氧化石墨烯-甲霜灵、氧化石墨烯-恶霉灵杀菌剂纳米复合材料。对氧化石墨烯-杀菌剂进行扫描电镜表征和红外光谱表征,并采用菌丝生长速率法和孢子萌发法对氧化石墨烯-杀菌剂进行室内毒力测定。结果表明,m(氧化石墨烯)∶m(甲霜灵)=1∶1,m(氧化石墨烯)∶m(恶霉灵)=1∶1进行复配,在菌丝生长试验中,共毒系数分别为391.16和356.11;在孢子萌发试验中,共毒系数分别为292.35和221.42,对黄瓜枯萎病联合毒力同样表现为增效作用。氧化石墨烯-杀菌剂对黄瓜枯萎病具有良好的抗真菌活性。     

乌兰察布地区油菜无公害生产技术

1．1品种选择四月慢、五月慢、上海青帮。1．2种子处理根据病害种类选其一。a．用种子重量的0．3％的25％甲霜灵可湿性粉剂拌种(防霜霉病)。b．用种子重量的0．4％的50％福美双可湿性粉剂拌种或用种子重量的0．2％～0．3％的50％扑海因可湿性粉剂拌种(防黑斑病、炭疽病)。c．用农抗751按种子量的1％～1．5％拌种(防软腐病)。     

6种杀菌剂对马铃薯晚疫和辣椒枯萎病菌的室内毒力测定

为筛选出有效防治马铃薯晚疫病和辣椒枯萎病的药剂,采用茵丝生长速率法,测定了6种杀菌剂对马铃薯晚疫病菌和辣椒枯萎病菌的抑菌作用。6种杀菌剂中,25％咪鲜胺EC对2种病原菌的毒力最强,EC50值分别为0．032mg／L和0．089mg／L;氟环唑和己唑醇次之;12．5％腈茵唑EC和粉唑醇抑制效果较好;50％甲基硫菌灵WP的毒力最差。25％咪鲜胺EC,氟环唑和己唑醇均可有效抑制2种病原茵的生长,可进一步用于田间试验。     

明胶包埋壳聚糖/海藻酸钠茶多酚的缓释性能

以海藻酸钠和壳聚糖为壁材制备了茶多酚微胶囊,确定了最佳制备工艺条件为壳聚糖质量分数1．0％、海藻酸钠质量分数2．0％～3．0％、氯化钙质量分数5．0％,所制得的茶多酚微胶囊的包埋率最大,用明胶包埋茶多酚微胶囊,制备了茶多酚缓释复合体系,结果表明,用明胶包埋后的微胶囊可使茶多酚的缓释性能及稳定性有较大的提高。     

阿米西达水悬浮剂防治苹果病害的应用研究

对具有保护和治疗双重功效的仿生性杀菌荆25％阿米西达（Amistar）水悬浮剂在苹果病害管理体系中的应用技术和定位进行了探讨．结果表明，25％Amistar SC除对嘎啦品种有药害外，对红富士、新红星、北斗、澳州青苹等6个骨干品种均无任何不良影响，使用安全；同时。25％阿米西达sc对苹果白粉病、黑星病及斑点落叶病等3种主要病害均具有显著防治效果。使用浓度1：2000～1：2500，防治效果为80％～90％；在广谱性和防效上显著优于目前生产上推广的常规性的苯并咪唑类、三唑类及代森类的杀菌剂品种．应用上重点应在发病前或发病初期施药。间隔7～10d喷1次，连喷3～4，次为宜，同时与其它作用机制的杀菌剂如苯并咪唑类、三唑类等内吸性杀菌剂混用或交替用药．在以红富士、新红星等品种为主栽品种果区的无公害苹果生产病害管理体系中具有极高的推广价值．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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