153,604 research outputs found

    Special Libraries, January 1956

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    Volume 47, Issue 1https://scholarworks.sjsu.edu/sla_sl_1956/1000/thumbnail.jp

    Qualitative and quantitative evaluation of glucosinolates in cruciferous plants during their life cycles

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    Glucosinolates produced by Brassica species were investigated in relation to biofumigation, a term used to describe the effects some allelochemicals, including glucosinolate derived products, may have on soil-borne pathogens or other herbivores. Four Brassica species of the U-triangle, namely B. nigra (L.) Koch, B. carinata Braun, B. juncea (L.) Czern. and B. rapa L. were compared with respect to their qualitative and quantitative glucosinolate profiles in roots, stems, leaves and reproductive organs. Plants were monitored at four different development stages and the total glucosinolate content as well as their dry matter production as an indication of their potential biomass under field conditions were determined. Glucosinolate levels of up to 120 ìmol g -1 DM were found in B. nigra and B. juncea, while B. rapa did not show values over 25 ìmol g-1 DM at any stage of the investigated plant life cycles. In the three species at the top of U-triangle, reproductive tissues showed the highest glucosinolate concentration when compared to the rest of the plant parts, while in B. rapa, the roots were the organs with the highest glucosinolate concentration. The glucosinolate profile of the different plant parts of the species studied changed during the growth cycle, showing that the trade-off between glucosinolate profile and biomass production should be optimized in order to maximize the biofumigation effect of a crop. However, further information on other allelochemicals and on the different types of glucosinolate derived products resulting from autolysis or myrosinase catalyzed hydrolysis of glucosinolates at different reaction conditions is needed for the appropriate description of the potential biofumigation effects of different crops

    Special Libraries, July-August 1957

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    Volume 48, Issue 6https://scholarworks.sjsu.edu/sla_sl_1957/1005/thumbnail.jp

    Special Libraries, October 1959

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    Volume 50, Issue 8https://scholarworks.sjsu.edu/sla_sl_1959/1007/thumbnail.jp

    Will Border Carbon Adjustments Work?

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    Abstract and PDF report are also available on the MIT Joint Program on the Science and Policy of Global Change website (http://globalchange.mit.edu/).The potential for greenhouse gas (GHG) restrictions in some nations to drive emission increases in other nations, or leakage, is a contentious issue in climate change negotiations. We evaluate the potential for border carbon adjustments (BCAs) to address leakage concerns using an economy-wide model. For 2025, we find that BCAs reduce leakage by up to two-thirds, but result in only modest reductions in global emissions and significantly reduce welfare. In contrast, BCA-equivalent leakage reductions can be achieved by very small emission charges or efficiency improvements in nations targeted by BCAs, which have negligible welfare effects. We conclude that BCAs are a costly method to reduce leakage but such policies may be effective coercion strategies. We also investigate the impact of BCAs on sectoral output and evaluate the leakage contributions of trade and changes in the price of crude oil.This study received support from the MIT Joint Program on the Science and Policy of Global Change, which is funded by a consortium of government, industry and foundation sponsors

    Self-Evaluation Applied Mathematics 2003-2008 University of Twente

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    This report contains the self-study for the research assessment of the Department of Applied Mathematics (AM) of the Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) at the University of Twente (UT). The report provides the information for the Research Assessment Committee for Applied Mathematics, dealing with mathematical sciences at the three universities of technology in the Netherlands. It describes the state of affairs pertaining to the period 1 January 2003 to 31 December 2008

    ENMat international projects: FP7 NMP coordination action: 2BFUNTEX

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    Boosting collaboration between research centres and industry to enhance rapid industrial uptake of innovative functional textile structures and textile-related materials in a mondial market 2BFUNTEX will exploit the untapped potential in functional textile structures and textile related materials. It will bring together all innovation actors in the field fostering a multidisciplinary approach between universities, research institutes, SMEs and sector associations. The 2BFUNTEX team will identify technological gaps and eliminate barriers resulting in a faster industrial uptake of added value functional materials with new functionalities and improved performance and resulting in creation of new business worldwide. Technological needs will be mapped, new joint international research disciplines will be identified and multidisciplinary lab teams will be created. International cooperation will be favoured to exploit the worldwide market expansion potential. Industry will be involved at all stages of the process. The inventory will enlarge the team of important textile universities and renowned materials research centres and will identify new collaborations. Synergy will be reinforced and created which will enable to identify and develop new functional materials. Training materials regarding functional materials for research and industrial purposes will be developed and implemented to allow a common language regarding functional textile structures and text ile related materials, and will increase the number of well-trained people in this field. Further, the 2BFUNTEX partners will organise and participate in conferences, workshops and brokerage events. Along with a website with an extensive database comprising all information gained throughout the project, collaboration will be boosted and rapid industrial uptake catalysed and enhanced. The project duration will be 4 years and the consortium includes 26 partners from 16 countries. Start date : 01/01/2012 More information: Ir. Els Van der Burght Department of Textiles/Ghent University [email protected] [email protected] URL: http://www.2bfuntex.e

    The Faculty Notebook, December 2004

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    The Faculty Notebook is published periodically by the Office of the Provost at Gettysburg College to bring to the attention of the campus community accomplishments and activities of academic interest. Faculty are encouraged to submit materials for consideration for publication to the Associate Provost for Faculty Development. Copies of this publication are available at the Office of the Provost

    Picosecond laser machined designed patterns with anti-ice effect

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    Micromachining using ultra short laser pulses (USLP) has evolved over the past years as a versatile tool for introducing functional features in surfaces at a micrometric and even at a sub wavelength scale. Being able to control the surface topography at this level provides a method to change the wetting behavior of a great number of materials. In most cases, when a surface has a natural tendency to be wetted (high surface energy), increasing its roughness will increase the spreading of water over it, and when it is naturally hydrophobic this roughness can dramatically enhance the water repellency. In this study, anti-ice properties of water repellent laser machined materials are investigated. Therefore, a stainless steel substrate (AISI 304L) has been textured with regular hatched patterns, using UV and green laser pulses of 6.7ps. In order to decrease the surface energy, a thin hydrophobic\ud coating has been applied on top of these structures. Super-hydrophobic state has been reached for many of the samples, and small hysteresis values have been measured to confirm the socalled, self-cleaning, or “lotus effect” properties of the engineered surfaces
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