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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第2期10卷 133-141页

作者： Ch Surendhar REDDY A. prasad BABU B.p. Mallikarjuna SWAMY K. KALADHAR N. SARLA Biotechnology Laboratory Crop Improvement SectionDirectorate of Rice ResearchRajendranagar

Drought, flood, salinity, or a combination of these limits rice production. Several rice varieties are well known for their tolerance to specific abiotic stresses. We determined genetic relationship among 12 rice varieties including 9 tolerant to drought, flood, or salinity using inter-simple sequence repeat （ISSR） markers. Based on all markers, the nine tolerant varieties formed one cluster distinct from the cluster of three control varieties. The salt-tolerant varieties were closest to two flood-tolerant varieties, and together they were distinct from the drought-tolerant varieties. （GA）8YG was the most informative primer, showing the highest polymorphic information content （pIC） and resolving power （Rp）. The drought-, flood-, and salt-tolerant varieties grouped in three distinct clusters within the group of tolerant varieties, when （GA）8YG was used. Sabita was the only exception. The two aus varieties, Nagina22 and FR13A, were separated and grouped with the drought- and flood-tolerant varieties, respectively, hut they were together in dendrograms based on other primers. The results show that ISSR markers associated with （GA）sYG delineated the three groups of stress-tolerant varieties from each other and can be used to identify genes/new alleles associated with the three abiotic stresses in rice germplasm.

关键词： Drought Submergence Salinity Inter-simple sequence repeat-polymerase chain reaction (ISSR-pCR) (GA)8YG Nagina22 (N22) FR13A pokkali

Machine learning property prediction for organic photovoltaic devices

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npj Computational Materials 2020年第1期6卷 279-286页

作者： Nastaran Meftahi Mykhailo Klymenko Andrew J.Christofferson Udo Bach David A.Winkler Salvy p.Russo ARC Centre of Excellence in Exciton Science School of ScienceRMIT UniversityMelbourneVIC 3001Australia School of Science College of ScienceEngineering and HealthRMIT UniversityMelbourneVIC 3001Australia ARC Centre of Excellence in Exciton Science Department of Chemical EngineeringMonash UniversityWellington RoadClaytonVIC 3800Australia La Trobe Institute for Molecular Science La Trobe UniversityKingsbury DriveBundooraVIC 3086Australia Monash Institute of pharmaceutical Sciences Monash UniversityParkvilleVIC 3052Australia School of pharmacy University of NottinghamNottingham NG72QLUK CSIRO Data61 PullenvaleQLD 4069Australia

Organic photovoltaic(OpV)materials are promising candidates for cheap,printable solar ***,there are a very large number of potential donors and acceptors,making selection of the best materials ***,we show that machine-learning approaches can leverage computationally expensive DFT calculations to estimate important OpV materials properties quickly and *** generate quantitative relationships between simple and interpretable chemical signature and one-hot descriptors and OpV power conversion efficiency(pCE),open circuit potential(Voc),short circuit density(Jsc),highest occupied molecular orbital(HOMO)energy,lowest unoccupied molecular orbital(LUMO)energy,and the HOMO–LUMO *** most robust and predictive models could predict pCE(computed by DFT)with a standard error of±0.5 for percentage pCE for both the training and test *** model is useful for pre-screening potential donor and acceptor materials for OpV applications,accelerating design of these devices for green energy applications.

关键词： occupied property prediction

Modelling Solitary Waves and Its Impact on Coastal Houses with SpH Method

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China Ocean Engineering 2010年第2期24卷 353-368页

作者： LIANG Dong-fang N. I. Thusyanthan S. p. Gopal Madabhushi 唐洪武 Department of Engineering University of Cambridge Cambridge CB2 1PZ UK KW Ltd Fetcham Park House Lotcer Road Fetcham Surrey KT22 91ID UK State Key Laboratory of Hydrology-Water Resources and Hydraulic Er~gineering Hohai University Nanjing 210098 China

The interaction between solid structures and free-surface flows is investigated in this study. A Smoothed particle Hy- drodynamics （SpH） model is used in the investigation and is verified against analytical solutions and experimental obser- vations. The main aim is to examine the effectiveness of a tsunami-resistant house design by predicting the wave loads on it. To achieve this, the solitary wave generation and ran-up are studied first. The solitary wave is generated by allowing a heavily weighted block to penetrate into a tank of water at one end, and the near-shore seabed is modelled by an inclined section with a constant slope. Then, the SpH model is applied to simulate the three-dimensional flows around different types of houses under the action of a solitary wave. It has been found that the tsunami-resistant house design reduces the impact force by a factor of three.

关键词： solitary waves tsunami wave impact coastal structures SpH

Ab Initio MO Studies on the Reaction Mechanism for Carbonyl Insertion Catalyzed by Carbonyl Cobalt Complex

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Chemical Research in Chinese Universities 2000年第1期16卷 31-35页

作者： LEI Ming FENG Wen-lin and XU Zhen-feng (Department of Applied Chemistry, Beijing University of Chemical Technology,Beijing 100029, p. R. China Department of Chemistry, Beijing Normal University, Beijing 100875, p. R. China) 北京化工大学北京 100029 北京师范大学北京 100875

Ab initio method, under the effective core potential(ECp) approximation at HF/LANL2DZ level, has been employed to study the reaction mechanism of the carbonyl insertion of olefin hydroformylation catalyzed by a carbonyl cobalt HCo(CO)_3. The two reaction paths have been discussed. The calculated potential energy barriers for the carbonyl migration and the ethyl group migration are 105. 0 kJ/mol and 39. 17 kJ/mol, respectively. The results indicate that the reaction path via ethyl migration is more energetically favorable than that via carbonyl insertion.

关键词： Carbonyl Cobalt Hydroformylation Ab initio method Effective core potential

A REMARKS ON THE INVERSESCATTERING pROBLEM FORACOUSTIC WAVES IN R^3

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工程数学学报 1990年第2期7卷 114-125页

作者： Ma YichenXi’an Jiaotong University, p.R.China

In this paper the inverse scattering problem for acoustic waves in R is discussed by using the combined double and single layer potential approach and some properties of the optimal solution of the inverse scattering ... 详细信息

关键词：逆散射声波电位逼近

Isolation and Spectroscopic Characterization of protonated Mixed [Tetrakis (4-pyridyl)porphyrinato] (phthalocyaninato)Rare Earth (Ⅲ)Double-decker Compounds

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Chemical Research in Chinese Universities 2001年第2期17卷 134-142页

作者： JIANG Jian-zhuang,LIU Wei ,SUN Xuan ,ZHANG Xian-xi and NG Dennis K. p. (Key Laboratory for Colloid and Inter face Chemistry of the Educational Ministry, Department of Chemistry, Shandong University, Jinan 250100, p. R. China Department of Chemistry, The 山东大学教育部胶体与界面化学重点实验室山东济南 250100 香港中文大学香港

The treatment of tetrakis (4-pyridyl) porphyrin H2Tpyp with a hydrated rare earth (III) acetylacetonate RE(acac)3 · nH2O (RE=Y, Eu, Gd) in 1,2, 4-trichlorobenzene (TCB) pro- duced a monomeric porphyrinato rare earth compound RE (Tpyp) acac, which further reacted with dicyanobenzene in amyl alcohol in the presence of 1, 8-diazabicyclo [5. 4. 0] undec-7-ene (DBU), giving HRE(Tpyp) (pc) in a good yield. Upon exposure to air, part of the protonated mixed double-deckers in CHC13 solutions converted slowly to the corresponding neutral complexes RE (Tpyp) (pc). These protonated complexes were characterized by means of UV-V is, IR, NMR, mass spectroscopies. The quaternarization of these protonated mixed double-deckers with methyl iodide produced the salts of tetramethylated cations [HRE(TMpyp) (pc)]4+.

关键词： Mixed sandwich complex porphyrinate phthalocyaninate Rare earth complex

Tunnel magnetoresistance with atomically thin two- dimensional hexagonal boron nitride barriers

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Nano Research 2015年第4期8卷 1357-1364页

作者： Andre Dankert M. Venkata Kamalakar Abdul Wajid R. S. patel Saroj p. Dash Department of Microtechnology and Nanoscience Chalmers University of Technology SE-41296 Goteborg Sweden Department of physics Birla Institute of Technology and Science Pilani--K K Birla Goa Campus Zuarinagar-403 726 Goa India

The two-dimensional atomically thin insulator hexagonal boron nitride （h-BN） constitutes a new paradigm in tunnel based devices. A large band gap, along with its atomically flat nature without dangling bonds or interface trap states, makes it an ideal candidate for tunnel spin transport in spintronic devices. Here, we demonstrate the tunneling of spin-polarized electrons through large area monolayer h-BN prepared by chemical vapor deposition in magnetic tunnel junctions. In ferromagnet/h-BN/ferromagnet heterostructures fabricated on a chip scale, we show tunnel magnetoresistance at room temperature. Measurements at different bias voltages and on multiple devices with different ferromagnetic electrodes establish the spin polarized tunneling using h-BN barriers. These results open the way for integration of 2D monolayer insulating barriers in active spintronic devices and circuits operating at ambient temperature, and for further exploration of their properties and prospects.

关键词： hexagonal boron nitride 2D layered materials CVD spintronics magnetic tunnel junction tunnel magnetoresistance tunnel barrier

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纤维素/聚乳酸复合材料的结构与性能

高分子材料科学与工程 2018年第6期34卷 60-64页

作者：强涛 Wang Jinwu Wolcott p Michael 西安工业大学材料与化工学院陕西西安710021 华盛顿州立大学复合材料与工程中心美国普尔曼99164

以机械球磨法预处理纸浆纤维素纤维,研究球磨对纤维素形貌和结构的影响;以纤维素颗粒为填料,通过熔融加工方法,制备出可完全再生且可完全降解的聚乳酸(pLA)复合材料,对复合材料的形貌、结构和性能进行了表征测试。结果表明,作为干法工艺... 详细信息

以机械球磨法预处理纸浆纤维素纤维,研究球磨对纤维素形貌和结构的影响;以纤维素颗粒为填料,通过熔融加工方法,制备出可完全再生且可完全降解的聚乳酸(pLA)复合材料,对复合材料的形貌、结构和性能进行了表征测试。结果表明,作为干法工艺,机械球磨可以简便地制备微晶纤维素(MCC)。加入纤维素颗粒以后,复合材料的冲击强度显著增加(最高达70.7%),断面出现韧性断裂特征;pLA的玻璃化转变温度和冷结晶温度升高,最大分解速率温度降低约15℃,热稳定性略有下降。

关键词：聚乳酸纤维素球磨增韧耐热性

In vitro control of Staphylococcus aureus (NCTC 6571) and Escherichia coli (ATCC 25922) by Ricinus communis L.

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Asian pacific Journal of Tropical Biomedicine 2012年第9期2卷 717-721页

作者： E.Christy Jeyaseelan p.T.Justin Jashothan Department of Botany Faculty of ScienceUniversity of Jaffna

Objective:To evaluate antibacterial activity of hot and cold ethanol and methanol leaf extracts of Ricinus communis L(***)against Staphylococcus aureus(***)(NCTC 6571)and Escherichia coli(***)(ATCC 25922).Methods:Leaf powder of *** *** extracted with hot(in Soxhlet)and cold ethanol and methanol,*** antibacterial activity of the extracts was determined by agar well diffusion and macro broth dilution *** extracts were also subjected to phytochemical ***:All the four test extracts showed inhibition on both *** and *** and cold ethanol extracts revealed significantly(ppectively).*** was highly inhibited by hot extracts of both ethanol and methanol with the MIC and MBC of 40 mg/mL and 80 mg/mL,*** analysis revealed the presence of saponins,cardiac glycosides,tannins,flavonoids and terpenoids in all test ***:This study demonstrates that the hot and cold methanol and ethanol extracts are potential sources for control of *** and ***,the hot and cold extracts of ethanol are more inhibitive against *** even at lower *** study is needed to identify the specific bioactive compounds,their mode of action and their nontoxic nature in vivo condition.

关键词： Ricinus communis Antibacterial activity Staphylococcus aureus Escherichia coli Extract Minimum inhibitory concentration Minimum bactericidal concentration

About Nonlinear Mechanism of Energy Transformation at Ion Implantation

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Journal of Materials Science & Technology 1999年第6期15卷 581-582页

作者： S.G.psakhie, K.p.Zolnikov, R.I.Kadyrov, G.E.Rudenskii, S.A.Vassiliev and Yu.p.Shatheev (Institute of Strength physics and Materials Science, Russian Academy of Sciences, Siberian Branch, Tomsk, Russia) Institute of Strength physics and Materials Science Russian Academy of Sciences Siberian Branch Tomsk Russian Federation

The peculiarities of energy dissipation transferred by solitary waves on defects such as freesurface, grain boundary, region with high concentration of vacancies are studied. One of theways of description of the long ... 详细信息

关键词： About Nonlinear Mechanism of Energy Transformation at Ion Implantation