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Spectral response of spider mite infested cotton:Mite density and miticide rate study

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International Journal of Agricultural and Biological Engineering 2013年第1期6卷 48-52页

作者： Yubin Lan Huihui Zhang w C Hoffmann Jr.Juan D Lopez United States Department of Agriculture Agricultural Research ServiceAreawide Pest Management Research UnitCollege StationTexasUSA United States Department of Agriculture Agricultural Research ServiceWater Management Research UnitParlierCaliforniaUSA

Two-spotted spider mites are important pests in many agricultural *** mites(Acari:Tetranychidae)have been found to cause economic damage in corn,cotton,and *** glass vial bioassays indicate that Temprano™(abamectin)is the most toxic technical miticide for adult two-spotted spider *** an aerial application standpoint,additional research is needed to identify aerial application parameters for this *** objective of this study was to investigate spectral response of spider mite-infested cotton plants with different density levels of mites and treated with different rates of *** showed significantly different spectral signatures of cotton plants infested with different density levels of *** treating mite-infested cotton plants with five different Temprano rate treatments(control,one-eighth,one-fourth,one-half,and full rates),spectral reflectance curves were found to be significantly *** wavelengths of 550 nm,560 nm,680 nm and 740 nm were important for detecting the spectral differences among mite infested cotton plants treated with various rate of *** Difference Vegetative Index imagery was able to detect different levels of cotton plant ***-rate application of Temprano controlled mite-infested plants as effectively as the full-rate *** findings may lead to reduced cost and quantity of miticides used to maintain effective crop production and protection.

关键词： spectral reflectance infested cotton plants crop protection Normalized Difference Vegetative Index(NDVI) Temprano rate treatments

Can Labor Out-Migration Reduce Firewood Consumption by Rural Households in western Mountainous China

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Chinese Journal of Population,Resources and Environment 2012年第2期10卷 110-119页

作者： Tai Xiujun LiShuzhuo Marcus w. Feldman School of Economics and Management Shanxi Normal University Linfen Shanxi 041000 China Institute for Population and Development Studies School of Public Policy and Administration Xi'an Jiaotong University Xi'an Shaanxi 710049 China morrison Institute for Population and Resource Studies Stanford University CA 94305 United States

The relationship between out-migration of labor in the Qinling mountain area and households' firewood consumption is explored. Migration and remittances reduce households' firewood consumption due to increases in both income and opportunity cost of firewood collection. Previous studies have been equivocal because they ignored uncertainty in household economy, which is widespread in forest areas of less developed countries. This study provides additional insight by considering vulnerability and subjective assessment of poverty generated by unstable income and an uncertain future. we provide evidence that the amount of firewood consumed depends on income and opportunity cost of firewood collection, but also on a prudent consumption strategy, due to farmers' subjective assessment of their future possible poverty. we also find out-migration of labor can reduce per capita firewood consumption but subjective poverty also acts against reduction of firewood consumption.

关键词： migration vulnerability firewood rural households

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STRESS RELAXATION AND RELIABILITY EVALUATION OF SODA-LIME gLASS

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Acta Metallurgica Sinica(English Letters) 2004年第4期17卷 460-464页

作者： Y.w.Bao Y.F.Han F.T.gong China Building Materials Academy China Beijing 100024

Stress relaxation of glass is a dualism effect, it often lead to strength degradation in strengthened glass, but on the other hand, it improves the reliability and stress-uniformity of glasses. In this work, stress relaxation of soda-lime glass was investigated using three-point bending tests at 400-560℃ which is near the brittle to ductile transition temperature, for enhancing the safety of glass productions and exploring the most economic anneal process. The experimental results show that the speed of stress relaxation increases but the ultimate stress decreases with increasing temperature. The stress uniformity of the glass samples before and after anneal was examined using spherical indentation at arranged testing points. It indicates that the scatter of the local strength measured by the Hertzian indentation is smaller in the anneal glass than in initial specimen, so that the estimated weibull modulus for the anneal specimen is higher. Furthermore, the strength evaluation by Hertzian indentation a

关键词： glass stress relaxation local strength reliability

Development and Evaluation of gold 3D Cylindrical Nanoelectrode Ensembles

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Chinese Journal of Chemistry 2007年第11期25卷 1754-1757页

作者：曹立新闫培生孙克宁 KIRK, w Donald Department of Applied Chemistry Harbin Institute of Technology Harbin Heilongjiang 150001 China Department of Bioengineering Harbin Institute of Technology Weihai Campus Weihai Shandong 264209 China Department of Chemical Engineering and Applied Chemistry University of Toronto Toronto Ontario M5S 3E5 Canada

gold 3D cylindrical nanoelectrode ensembles （NEEs）, 100 nm in diameter and 500 nm in length were prepared by electroless template synthesis in polycarbonate filter membranes, followed by selective controlled chemical etching. The morphology of the nanowires and cylindrical NEEs was imaged by scanning electron microscopy. The protruding nanoelectrodes were in good parallel order. EDX study showed that the nanoelectrode elements consisted of pure gold. The electrochemical evaluation of the 3D electrodes was conducted using the well known [Fe（CN）6]^3-/[Fe（CN）6]^4- couple. Cyclic voltammgrams （CV） show a very low double layer charging current and a higher ratio of signal to background current than 2D disc NEEs. Electrochemical impedance spectroscopy （EIS） indicates that the 3D cylindrical NEEs effectively accelerate the charge transfer process, which is in consistent with the results of CV. The linear relationship with a slope of 0.5 between lg Ipc and lg v shows that linear diffusion is dominant on the 3D cylindrical NEEs at conventional scan rates.

关键词： cylindrical nanoelectrode emsembles template synthesis chemical etching cylclic voltammetry electrochemical impedance spectroscopy

OXIDATIVE　METHYLATION　OF　TOLUENE　wITH　METHANE　OVER　BASIC　ZEOLITE　CATALYSTS　PROMOTED　wITH　ALKALI　METAL　OXIDES

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Chinese Chemical Letters 1996年第3期7卷 229-232页

作者： Zhou, LP Tao, KY Li, w Su, M Li, HX Hattori, H HOKKAIDO UNIV SAPPOROHOKKAIDO 060JAPAN NANKAI UNIV DEPT CHEMTIANJIN 300071PEOPLES R CHINA

The oxidative methylaion of tolucoe with methane to ethylbenzene and Styrene proCeeded over basic Y typezeolite catalyst at 1023K. KY was prepared from NaY raw powder by exchange with 0.5M KOH aqueoussolution at 363K. Loaded KY were preped by impregnating aqueous solutions of LiNO3 and CsNO3 onto *** KY zeolite showed very low C8-yield and selativity. Addition of alkali-metal oxides to the KYzeolite increased greatly the catalytic activity. The Cs2O(6wt% Cs2O)/KY catalyst gave the highest C3 yield of32.2% with selelectivity of 60.9%.

关键词： BASIC PROM CATA OVER

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影响植物细胞培养物生物合成和生物转化次生代谢产物的几个因素

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生物技术通报 1986年第7期 1-10页

作者： w.g.w.Kurz 金人一

引言植物能产生一类特殊物质——次生代谢产物。这类物质数目很多,其结构差别很大,正象植物界中形成的物种有很大的差别一样。最常见的代谢产物有类萜、生物碱和糖苷。由于植物细胞能在体外培养,世界各地都认为可利用这样的培养物来生... 详细信息

引言植物能产生一类特殊物质——次生代谢产物。这类物质数目很多,其结构差别很大,正象植物界中形成的物种有很大的差别一样。最常见的代谢产物有类萜、生物碱和糖苷。由于植物细胞能在体外培养,世界各地都认为可利用这样的培养物来生产次生代谢产物。这类物

关键词：次生代谢产物分布型次级代谢产物生物合成生化反应生物碱培养物植物细胞生物转化生物催化愈伤组织形成细胞培养培养(生物)

The Special Column of Aquatic Invasive Species Science

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Current Zoology 2011年第6期57卷 816-817页

作者： gerard van der Velde Rob S.E.w. Leuven guest Editors Radboud University Nijmegen Institute for Water and Wetland Research P.O. Box 9010 6500 GL Nijmegen The Netherlands

we were delighted when Zhi-Yun Jia, Executive Editor of Current Zoology, approached us with a proposal to engage in a special column on invasive species science. Six papers have been written for this special column, all containing new information and approaches in the field of aquatic invasive species science. Each paper has gone through the rigorous peer review process used at Current Zoology, and Zhi-Yun Jia was very helpful by contacting reviewers and improving the manuscripts.

关键词：外来入侵物种科学水生同行评议动物

Potential role of metabolomics in diagnosis and surveillance of gastric cancer

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world Journal of gastroenterology 2014年第36期20卷 12874-12882页

作者： Angela w Chan Richdeep S gill Daniel Schiller Michael B Sawyer Daniel Schiller Division of General Surgery University of Alberta Edmonton Alberta T6G 2B7 Canada Division of Medical Oncology Cross Cancer Institute University of Alberta Edmonton Alberta T6G 1Z2 Canada

gastric cancer is one of the deadliest cancers worldwide, and is especially prevalent in Asian countries. with such high morbidity and mortality, early diagnosis is essential to achieving curative intent treatment and long term survival. Metabolomics is a new field of study that analyzes metabolites from biofluids and tissue samples. while metabolomics is still in its infancy, there are numerous potential applications in oncology, specifically early diagnosis. Only a few studies in the literature have examined metabolomics’ role in gastric cancer. Various fatty acid, carbohydrate, nucleic acid, and amino acid metabolites have been identified that distinguish gastric cancer from normal tissue and benign gastric disease. However, findings from these few studies are at times conflicting. Most studies demonstrate some relationship of cancer cells to the warburg Effect, in that glycolysis predominates with conversion of pyruvate to lactate. This is one of the most consistent findings across the literature. There is less consistency in metabolomic signature with respect to nucleic acids, lipids and amino acids. In spite of this, metabolomics holds some promise for cancer surveillance but further studies are necessary to achieve consistency and validation before it can be widely employed as a clinical tool.

关键词： gastric cancer Metabolomics Screening Biomarkers Surveillance

Hypersensitivity and its application to structural analysis of lanthanide complexes

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Chinese Journal of Chemistry 1997年第1期15卷 49-53页

作者： Yang, w Chen, M gao, JZ Yang, wD Kang, Jw Yang, Hw Nw NORMAL UNIV DEPT PHYSLANZHOU 730070GANSUPEOPLES R CHINA

Hypersensitivity of the ternary complexes Ln(beta-dik)(4)HMQ(where Ln=Nd, Ho, Er, beta-dik=acetylacetonate(AA), dibenzoylmethanate(DBM) and MQ=4-methylquinoline) in acetone solution is studied based on the dynamic coupling model. The structures of these complexes in solution are deduced. Their coordination polyhedrons are all distorted square antiprism. Neodymium complexes have D-2 symmetry, while holmium and erbium complexes have exact D-2d symmetry.

关键词： hypersensitivity structural analysis lanthanide ternary complexes

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