2,527 research outputs found
Cognition and visual information: an examination of human evolution, cognitive models and my artistic practice
No full textAn examination of my cross-disciplinary artistic practice that attempts to bring together Asian meditative disciplines with Western inquiry through visualizing social and physical statistics. As I explore the relationship between language and sensation, I use Charles Pierce's three referential modes: the iconic, indexical and symbol-symbol to view how humanity as come to understand the world through images, objects and rituals. Paralleling this investigation is a systems theory that attempts to visualize the fluidity of a non-discrete universe where social interaction correlates with the physical world.M.F.A.Includes bibliographical references (p. 39-42)by Brian J Bulfe
Public Perceptions of Genetically Modified Foods: Americans Know Not What They Eat
No full textBiotechnology stands to be a defining technology in the future of food and agriculture. Proponents argue that science and industry are poised to bring consumers a wide variety of products that have potential for meeting basic food needs, as well as delivering a wide-range of health, environmental and economic benefits. Opponents counter that the potential exists for unintended consequences, ranging from ecological disruption to adverse human health implications, and that these risks are not fully understood. Fundamental questions exist, however, regarding the general public’s position on food products derived with the use of biotechnology. To address these questions, the Food Policy Institute addressed consumers using computer assisted telephone interviews (CATI) system, a public phone survey of a sample selection of 1203 U.S. residents was administered between March and April 2001. The questionnaire was developed to address perceived gaps in the current literature on American consumer awareness, acceptance, and perceptions of food biotechnology and to serve as the basis for a set of longitudinal studies that will be able to track public opinion over time.Food Policy Institute Publication Number RR-0302-001
Micro- and nanoscale fluid mechanics : transport in microfluidic devices / Brian J. Kirby.
No full textengineering bookfair2015Includes bibliographical references and index.xxiii, 512 pages :"Intended for graduate and undergraduate students and as a reference for practicing researchers, this text focuses on the physics of fluid transport in micro- and nanofabricated systems"--Provided by publisher."This text focuses on the physics of fluid transport in micro- and nanofabricated liquid-phase systems, with consideration of gas bubbles, solid particles, and macromolecules. This text was designed with the goal of bringing together several areas that are often taught separately - namely, fluid mechanics, electrodynamics, and interfacial chemistry and electrochemistry - with a focused goal of preparing the modern microfluidics researcher to analyze and model continuum fluid mechanical systems encountered when working with micro- and nanofabricated devices. This text is not a summary of current research in the field, and it omits any discussion of microfabrication techniques or any attempt to summarize the technological state of the art. This text serves as a useful reference for practicing researchers but is designed primarily for classroom instruction. Worked sample problems are inserted throughout to assist the student, and exercises are included at the end of each chapter to facilitate use in classes"--Provided by publisher
Exciplex fluorescence of {[Zn(bipy)(1.5)(NO3)(2)}]center dot CH3OH center dot 0.5pyrene}n: a coordination polymer containing intercalated pyrene molecules (bipy=4,4 '-bipyridine)
No full textWe report the first use of fluorescence spectroscopy to probe the environment of the cavities that are present in open framework coordination polymers.PT: J; CR: BIRADHA K, 1998, CHEM COMMUN, P1327 BODENANT B, 1998, J AM CHEM SOC, V120, P7511 BODENANT B, 1999, J ORG CHEM, V64, P7034 DEDEREN JC, 1981, J PHYS CHEM-US, V85, P1198 FRAIJI LK, 1992, J CHEM EDUC, V69, P424 FUJITA M, 1994, J AM CHEM SOC, V116, P1151 GRIESER F, 1980, J AM CHEM SOC, V102, P7258 HARRIMAN A, 1999, PHYS CHEM CHEM PHYS, V1, P4203 HARTLEY RJ, 1985, J AM CHEM SOC, V107, P3436 KALYANASUNDARAM K, 1977, J AM CHEM SOC, V99, P2039 LOSIER P, 1996, ANGEW CHEM INT EDIT, V35, P2779 MOULTON B, 2001, CHEM REV, V101, P1629 NOSAKA Y, 1981, J PHYS CHEM-US, V85, P1353 SEN K, 2001, J PHYS CHEM A, V105, P9077 SIMON JA, 1997, J AM CHEM SOC, V119, P11012 SOUJANYA T, 2000, J PHYS CHEM A, V104, P9408 WILSON GJ, 1997, J PHYS CHEM A, V101, P4860 WILSON GJ, 1998, J PHYS CHEM A, V102, P5150 ZAWOROTKO MJ, 2001, CHEM COMMUN, P1; NR: 19; TC: 25; J9: CHEM COMMUN; PG: 2; GA: 593NBSource type: Electronic(1
Macroecology and meiobenthos: Reply to Warwick (2014)
No full textWarwick (2014; Mar Ecol Prog Ser 505:295-298) suggests that my claim that the biology of marine metazoan benthos may scale continuously with body mass (Bett 2013; Mar Ecol Prog Ser 487:1-6) is an overstatement. His alternative hypothesis is that there is a ‘step-change’ in allometric relationships between the meio- and macrobenthos. I continue to propose that simple null hypotheses for standing stock size spectra and species size spectra of the metazoan benthos, consistent with metabolic theory and macroecology, offer parsimonious solutions. For standing stock and species size spectra I present field data that conform to these null hypotheses. Data from other studies, such as those suggested by Warwick (2014), may be difficult to place in the macroecological context, as those studies are constructed or presented in a different manner (e.g. they lack data on the number of individuals identified). I suggest that it may be useful to consider ‘evolutionary species size spectra’ separately from ‘macroecological species size spectra’. Both are valid testable hypotheses, and are not necessarily contradictory
Temporal and spatial trends for trace metals in streams and rivers across Sweden (1996-2009)
No full textLong term data series (1996 through 2009) for trace metals were analyzed from a large number of streams and rivers across Sweden varying in tributary watershed size from 0.05 to 48 193 km(2). The final data set included 139 stream sites with data for arsenic (As), cobalt (Co), copper (Cu), chromium (Cr), nickel (Ni), lead (Pb), zinc (Zn), and vanadium (V). Between 7% and 46% of the sites analyzed showed significant trends according to the seasonal Kendall test. However, in contrast to previous studies and depositional patterns, a substantial portion of the trends were positive, especially for V (100%), As (95%), and Pb (68%). Other metals (Zn and Cr) generally decreased, were mixed (Ni and Zn), or had very few trends (Co) over the study period. Trends by region were also analyzed and some showed significant variation between the north and south of Sweden. Regional trends for both Cu and Pb were positive (60% and 93%, respectively) in the southern region but strongly negative (93% and 75 %, respectively) in the northern region. Kendall's tau coefficients were used to determine dependence between metals and potential in-stream drivers including total organic carbon (TOC), iron (Fe), pH, and sulphate (SO(4)(2-)). TOC and Fe correlated positively and strongly with As, V, Pb, and Co while pH and SO(4)(2) generally correlated weakly, or not at all with the metals studied
A compendium of Grande Ronde River and Imnaha River basins spring chinook salmon spawning ground surveys conducted from 1948 through 2003
No full textJ. Vincent Tranquilli, Brian C. Jonasson, MaryLouise, Keefe Richard W. Carmichael.Title from PDF title page (viewed on February 16, 2023).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (pages 33-40).Financed by the U.S. Fish and Wildlife Service under the Lower Snake River Compensation Plan.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Delta(3)-1,3,4-oxadiazolines: Photochemical precursors to diazoalkanes and sec-alkanediazonium ions in acidic solution
No full textPT: J; CR: ADAM W, 1990, TETRAHEDRON LETT, V31, P863 ALBERY WJ, 1972, J CHEM SOC P2, P2206 BELL RP, 1973, PROTON CHEM BROSCH D, 1991, J ORG CHEM, V56, P907 BROSCH D, 1993, J ORG CHEM, V58, P1118 BROWN HC, 1957, TETRAHEDRON, V1, P214 BROWN HC, 1957, TETRAHEDRON, V1, P221 BUNSE M, 1993, CHEM BER, V126, P1499 CHIANG Y, 1995, J AM CHEM SOC, V117, P9165 CHIANG Y, 1996, J AM CHEM SOC, V118, P4366 COLLINS CJ, 1971, ACCOUNTS CHEM RES, V4, P315 FINNEMAN JI, 1993, J AM CHEM SOC, V115, P3016 FINNEMAN JI, 1994, J ORG CHEM, V59, P6251 FINNEMAN JI, 1995, J AM CHEM SOC, V117, P4228 GOLD B, 1984, J AM CHEM SOC, V106, P2072 HO J, 1994, J AM CHEM SOC, V116, P6611 HOVINEN J, 1992, J AM CHEM SOC, V114, P10321 HUISGEN R, 1955, ANGEW CEHM, V67, P273 IZUTSU K, 1990, IUPAC CHEM DATA SERI, V35 KAZANIS S, 1991, J PHYS CHEM-US, V95, P4430 KIRMSE W, 1976, ANGEW CHEM INT EDIT, V15, P251 KRESGE AJ, 1973, CHEM SOC REV, V2, P475 KRESGE AJ, 1975, PROTON TRANSFER REAC, CH7 KRESGE AJ, 1986, J ORG CHEM, V51, P819 KRESGE AJ, 1986, J ORG CHEM, V51, P822 LAALI K, 1986, REV CHEM INTERMED, V6, P237 LARSON JW, 1987, J AM CHEM SOC, V109, P6230 LAWSON T, 1988, CARCINOGENESIS, V9, P1007 LEUNG KH, 1984, CHEM-BIOL INTERACT, V48, P169 LIBERATO DJ, 1989, CHEM RES TOXICOL, V2, P307 LIJINSKY W, 1992, CHEM BIOL N NITROSO MAJCHRZAK MW, 1989, J ORG CHEM, V54, P1842 MARCUS RA, 1968, J PHYS CHEM-US, V72, P891 MCGARRITY JF, 1980, J AM CHEM SOC, V102, P7303 MOSS RA, 1974, ACCOUNTS CHEM RES, V7, P421 MURRAY CJ, 1990, J AM CHEM SOC, V112, P1880 OFERRALL RAM, 1967, ADV PHYS ORG CHEM, V5, P331 WAGNER BD, UNPUB WASHABAUGH MW, 1988, BIOCHEMISTRY-US, V27, P5044 WASHABAUGH MW, 1989, J AM CHEM SOC, V111, P674 WHITTAKER D, 1978, CHEM DIAZONIUM DIAZO, P617 YOUNG JC, 1975, CAN J CHEM, V53, P2530 ZOLLINGER H, 1995, DIAZO CHEM, V1; NR: 43; TC: 11; J9: J AMER CHEM SOC; PG: 2; GA: WJ097Source type: Electronic(1
The fluorescence enhancement of 1-anilinonaphthalene-8-sulfonate (ANS) by modified beta-cyclodextrins
No full textThe fluorescence enhancement of the probe molecule 1-anilino-8-naphthalenesulfonate (ANS) by a number of modified beta-cyclodextrins has been studied. Alkyl-and hydroxyalkyl-substituted beta-cyclodextrins show significantly greater enhancement of ANS fluorescence than does the parent unmodified beta-cyclodextrin (beta-CD). In the cases of methyl-beta-cyclodextrin (Me-beta) and hydroxypropyl-beta-cyclodentrin (HP-beta), enhancements by a factor of 120 and 180, respectively, were observed for ANS fluorescence, compared to a factor of only 8.4 in the case of beta-CD The binding constant for formation of the 1:1 ANS:CD complex was determined to be 370 +/- 80 M-1 for Me-beta and 430 +/- 70 M-1 for HP-beta. The large increase in enhancement ability was shown to be a result of the relatively less polar environment experienced by the ANS probe incorporated in the modified as compared to the unmodified cyclodextrin cavities. The dielectric constants of the HP-beta and Me-beta cavities experienced by the included ANS were found to be 22 and 25, respectively. These polarities are similar to that of ethanol, whereas that of beta-CD was found to be 54, a polarity similar to that of a 3.1 methanol:water mixture. (C) 1998 Elsevier Science S.A. All rights reserved.PT: J; CR: BENESI HA, 1949, J AM CHEM SOC, V71, P2703 BICZOK L, 1994, J INCLUS PHENOM MOL, V18, P237 BORTOLUS P, 1996, ADV PHOTOCH, V21, P1 BRIGHT FV, 1990, J AM CHEM SOC, V112, P1343 CATENA GC, 1989, ANAL CHEM, V61, P905 CHAKRABARTI SK, 1971, J CHEM PHYS, V55, P5494 COX GS, 1984, J AM CHEM SOC, V106, P422 CRAMER F, 1967, J AM CHEM SOC, V89, P14 CROFT AP, 1983, TETRAHEDRON, V39, P1417 DELAPENA AM, 1993, J INCLUS PHENOM MOL, V15, P131 EDDAOUDI M, 1996, J CHEM SOC PERK MAY, P955 ENGLMAN R, 1970, MOL PHYS, V18, P145 FEMIA RA, 1985, ENVIRON SCI TECHNOL, V19, P155 FRANKE J, 1985, J INCLUSION PHENOM, V3, P471 FRANKEWICH RP, 1991, ANAL CHEM, V63, P2924 FUJITA K, 1988, CHEM LETT, P1947 HAMAI S, 1988, J PHYS CHEM-US, V92, P6140 HAMAI S, 1990, J PHYS CHEM-US, V94, P2595 HANSEN JE, 1992, J PHYS CHEM-US, V96, P6904 HARADA A, 1977, MACROMOLECULES, V10, P676 HEREDIA A, 1985, J CHEM SOC CHEM COMM, P1814 HUANG JF, 1990, J PHYS CHEM-US, V94, P8457 HUANG JF, 1992, APPL SPECTROSC, V46, P606 ITO N, 1996, J CHEM SOC PERK MAY, P965 JULES O, 1985, ANAL CHIM ACTA, V169, P355 KONIG WA, 1991, NEW TRENDS CYCLODEXT, CH16 KOSOWER EM, 1975, J AM CHEM SOC, V97, P2167 LERNER DA, 1989, ANAL CHIM ACTA, V227, P297 LI S, 1992, CHEM REV, V92, P1457 LIAO Y, 1996, J PHYS CHEM-US, V100, P734 LITWILER KS, 1992, APPL SPECTROSC, V46, P169 LOVE LJC, 1985, ANAL CHIM ACTA, V170, P3 NAKAMURA A, 1989, CHEM LETT, P2209 NAKAMURA A, 1991, CHEM PHYS LETT, V187, P110 NIGAM S, 1996, J PHYS CHEM-US, V100, P7135 PAGINGTON JS, 1987, CHEM BRIT, V23, P455 PARK JW, 1989, J PHYS CHEM-US, V93, P6454 PENN SG, 1994, J CHROMATOGR A, V680, P233 RAMAMURTHY V, 1988, ACCOUNTS CHEM RES, V21, P300 REEUWIJK HJEM, 1993, J CHROMATOGR-BIOMED, V614, P95 ROBINSON GW, 1978, J AM CHEM SOC, V100, P7145 SAENGER W, 1980, ANGEW CHEM INT EDIT, V19, P344 SANRAME CN, 1996, J PHYS CHEM-US, V100, P8151 SCHNEIDER HJ, 1991, J AM CHEM SOC, V113, P1996 STREET KW, 1988, APPL SPECTROSC, V42, P1315 TABUSHI I, 1976, J AM CHEM SOC, V98, P7855 UENO A, 1990, ANAL CHEM, V62, P2461 VAZQUEZ ML, 1991, ANAL CHIM ACTA, V255, P343 WAGNER BD, 1992, J PHYS CHEM-US, V96, P7904 WONG M, 1976, J AM CHEM SOC, V98, P2391; NR: 50; TC: 23; J9: J PHOTOCHEM PHOTOBIOL A-CHEM; PG: 7; GA: ZH118Source type: Electronic(1
A newly developed injection method for aluminum treatment in eutrophic lakes: Effects on water quality and phosphorus binding efficiency
No full textSchutz J, Rydin E, Huser BJ. 2017. A newly developed injection method for aluminum treatment in eutrophic lakes: Effects on water quality and phosphorus binding efficiency. Lake Reserv Manage. 33:152-162.Application of aluminum (Al) salts has been used to reduce phosphorus (P) concentrations in lakes since the 1960s. Al is typically applied to the water column where Al-hydroxides form, settle to the sediment surface, and bind P in sediment. Al can be transported to other, non-target areas of the lake, however, potentially limiting treatment effectiveness. To alleviate this problem, a new method has been developed in which the Al salt is injected directly into the sediment as a liquid. In this study, the binding efficiency and application costs were calculated for 2 lakes in Sweden that received injection applications of polyaluminum chloride (PAC). Binding efficiency was similar to previous water column applications, implying there is little difference between the 2 application methods. Other factors, however, such as dissolved organic matter and type of Al salt used (PAC vs. Al sulfate), can also affect binding efficiency. Thus, Al injection may have improved the amount of P bound per unit Al in the study lakes given the in-lake conditions and Al salt used. Treatment cost (cost per kilogram of P bound to Al) for the injection method compared to previous water column treatments was somewhat higher due to increased costs for buffered PAC and time needed for application. Both mobile sediment P and internal loading remained reduced compared to pre-treatment conditions, showing that the Al injection treatments continued to control sediment P release. More study is needed, however, to determine the relative effectiveness of this method in different types of lakes
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