1,958 research outputs found
A New Actitud
No full text(Statement of Responsibility) by Sara(h). Turk(Thesis) Thesis (B.A.) -- New College of Florida, 2003(Electronic Access) RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE(Bibliography) Includes bibliographical references.(Source of Description) This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.(Local) Faculty Sponsor: Portugal, Jose Alberto; Labrador-Rodriguez, Soni
Natural enemies associated with Maconellicoccus hirsutus (Hemiptera: Pseudococcidae) in the state of São Paulo, Brazil.
No full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)The pink hibiscus mealybug, Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae), occurs widely in Brazil, causing damage to some crops. However, information on beneficial insects acting to control populations of this pest in Brazil is practically non-existent. A survey was conducted in the state of Sao Paulo. The insect associates of M. hirsutus recorded on Hibiscus rosa-sinensis L. (Malvales: Malvaceae) were the parasitoid Gyranusoidea indica Shafee, Alam & Agarwal (Hymenoptera: Encyrtidae) and the predators Cycloneda sanguinea (L.), Cryptolaemus montrouzieri Mulsant, Chilocorus nigrita (F.), Exoplectra sp., Harmonia axyridis (Pallas), Tenuisvalvae notata (Mulsant) (Coleoptera: Coccinellidae), and Ceraeochrysa sp. (Neuroptera: Chrysopidae). Cryptolaemus montrouzieri was the most commonly collected species on populations of M. hirsutus infesting plants of H. rosa-sinensis. Chilocorus nigrita, Exoplectra sp., H. axyridis, T. notata, and Ceraeochrysa sp. were associated for the first time with M. hirsutus, and G. indica was recorded for the first time in Brazil
L'industria culturale di Adorno e Horkheimer: una proposta di rilettura = The cultural industry of Adorno and Horkheimer: a reinterpretation
No full textThe essay by Adorno and Horkheimer about The Culture Industry (in the volume Dialectic of Enlightment) represents for Alberto Abruzzese the starting point of a reasoning on the intellectuals' role, the crisis of humanistic and academic knowledge and the new “screen and network” society. The author uses The Culture Industry as a text on the western civilization's sunset and at the same time on the metamorphosis of mass cultural production. Abruzzese refers to those scholars who deepened these issues with passion and acumen. From Benjamin to Canetti, from Debord to Foucault, from Lukacs to McLuhan: Abruzzese analyses a whole research path in media culture with the frankness of a personal self-examination
Dehydroleucodine and dehydroparishin-B inhibit proliferation and motility of B16 melanoma cells
No full textDehydroleucodine, a known sesquiterpene lactone, and dehydroparishin-B, a new guaiane type sesquiterpene acid, were isolated from aerial parts of Artemisia douglasiana by chloroform extraction. We identified dehydroparishin-B as (7R)-2-oxo-guaia-1(10),3(4),5(6),11(13)-tetraen-12-oic acid by MS and NMR methods. We demonstrated that both dehydroparishin-B and dehydroleucodine blocked cell proliferation of B16 melanoma cells, but not normal murine Melan-A melanocytes, in a dose-dependent manner without affecting cell viability. We also found that both dehydroparishin-B and dehydroleucodine inhibited migration of B16 melanoma cells. These results suggest that dehydroleucodine and dehydroparishin-B could represent potential candidates for the treatment of metastatic melanomas.Fil: Priestap, Horacio A.. Florida International University; Estados UnidosFil: Galvis, Adriana. Florida International University; Estados UnidosFil: Rivero, Nathalie. Florida International University; Estados UnidosFil: Costantino, Valeria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos; ArgentinaFil: Lopez, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos; ArgentinaFil: Barbieri, M. Alejandro. Florida International University; Estados Unido
Strongly nonlinear Gagliardo-Nirenberg inequality in Orlicz spaces and Boyd indices
No full textGiven a N-function and a continuous function satisfying certain assumptions, we derive the inequality \begin{eqnarray*} \int_\r A(|f^{'}(x)|h(f(x)))dx\leq C_1\int_\r A\left(C_2 \sqrt[p]{ |{\cal M}f^{''}(x){\cal T}_{h,p}(f,x)| }\cdot h(f(x)) \right)dx, \end{eqnarray*} with constants independent of , where
belongs locally to the Sobolev space , { has}
compact support, is smaller than the lower Boyd index of , is certain nonlinear transform depending of but not of and denotes the Hardy-Littlewood maximal function. Moreover, we show that when , then can be improved by
. This inequality generalizes previous result by third author and Peszek, which was dealing with
Recent advances in the understanding of Xanthomonas citri ssp. citri pathogenesis and citrus canker disease management
No full textTaxonomic status: Bacteria; Phylum Proteobacteria; Class Gammaproteobacteria; Order Xanthomonadales; Family Xanthomonadaceae; Genus Xanthomonas; Species Xanthomonas citri ssp. citri (Xcc). Host range: Compatible hosts vary in their susceptibility to citrus canker (CC), with grapefruit, lime and lemon being the most susceptible, sweet orange being moderately susceptible, and kumquat and calamondin being amongst the least susceptible. Microbiological properties: Xcc is a rod-shaped (1.5–2.0 X 0.5–0.75 mm), Gram-negative, aerobic bacterium with a single polar flagellum. The bacterium forms yellow colonies on culture media as a result of the production of xanthomonadin. Distribution: Present in South America, the British Virgin
Islands, Africa, the Middle East, India, Asia and the South Pacific islands. Localized incidence in the USA, Argentina, Brazil, Bolivia, Uruguay, Senegal, Mali, Burkina Faso, Tanzania, Iran, Saudi Arabia, Yemen and Bangladesh. Widespread throughout
Paraguay, Comoros, China, Japan, Malaysia and Vietnam. Eradicated from South Africa, Australia and New Zealand. Absent
from Europe.EEA Bella VistaFil: Ference, Christopher M. United States Department of Agriculture. Agricultural Research Service. US Horticultural Research Laboratory; Estados Unidos. University of Florida. Department of Plant Pathology; Estados UnidosFil: Gochez, Alberto Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bella Vista; ArgentinaFil: Behlau, Franklin. Fundo de Defesa da Citricultura. Pesquisa e Desenvolvimento; BrasilFil: Wang, Nian. University of Florida. Citrus Research and Education Center. Department of Microbiology and Cell Science; Estados UnidosFil: Graham, James H. University of Florida. Citrus Research and Education Center. Department of Soil and Water Science; Estados UnidosFil: Jones, Jeffrey B. University of Florida. Department of Plant Pathology; Estados Unido
Political models of macroeconomic policy and fiscal reform
No full textThe author explains how recent developments in political economics improve our understanding of macroeconomic policy - especially the timing, design, and likelihood of stabilization's success through monetary and fiscal reform. The author reviews the literature on political business cycles and emphasizes several issues involving the relationship between the timing of elections and the timing of macroeconomic policies and outcomes. He also addresses how models can be useful in studying non-democratic systems. Two forces are crucial factors in both democratic and dictatorial systems, although they may manifest themselves differently: (1) the policymakers'incentive to retain power; and (2) society's polarization and the degree of social conflict. The author then analyzes why economic stabilization is delayed, even when it is obvious that sooner or later a stabilization program will have to be adopted. Some points made in the paper follow. Certain institutional characteristics make quick and successful stabilization more or less likely. The more unequal the distribution of stabilization's costs, the more likely that stabilization will be delayed. An increase in the cost of postponing stabilization reduces the delay. Political institutions that make it easier for small interest groups to veto legislation make delay more likely. If political and economic resources are unequally distributed, and it is obvious which group is stronger and has resources to wait longer, a war of attrition ends immediately, as there is no uncertainty about who will win it. Delay is more likely when information about who will bear the cost of delays is uncertain or unevenly distributed. Delay is also more likely when there is agreement about the need for fiscal change but a political stalemate about distribution - about how the burden of higher taxes or spending cuts should be allocated. Stabilization usually occurs when there is political consolidation. The burden of stabilization is sometimes unequal, with the politically weaker group (often the lower classes) bearing a larger burden (often regressive measures). If it is in the interest of the current government to do nothing for fear of failure because of government incompetence, the public may have no incentive to vote for the opposition because the opposition may also do nothing; the crucial factor here is how aware the government is of its own incompetence and thus its reasons for not attempting reform. Successful stabilization usually comes after several failed attempts, and the successful program is often very much like one that failed.Environmental Economics&Policies,Economic Theory&Research,National Governance,ICT Policy and Strategies,Health Economics&Finance
Seasonal expression of apospory in bahiagrass
No full textThis paper was presented at the 22nd International Grassland Congress, Sydney, Australia, 15−19 September 2013. Its publication in Tropical Grasslands – Forrajes Tropicales is the result of a co-publication agreement with the IGC 2013 Organizing Committee. Except for adjustments to the journal’s style and format, the text is essentially the same as that published in: Michalk LD; Millar GD; Badgery WB; Broadfoot KM, eds. 2013. Revitalising Grasslands to Sustain our Communities. Proceedings of the 22nd International Grassland Congress, Sydney, Australia, 2013. New South Wales Department of Primary Industries, Orange, NSW, Australia. p. 258–259.Fil: Rios, Esteban Fernando. University Of Florida; Estados Unidos de América; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina;Fil: Blount, Ann. University Of Florida; Estados Unidos de América;Fil: Kenworthy, Kevin E.. University Of Florida; Estados Unidos de América;Fil: Acuña, Carlos Alberto. Universidad Nacional del Nordeste; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina;Fil: Quesenberry, Kenneth H.. University Of Florida; Estados Unidos de América
Doubling the chromosome number of bahiagrass via tissue culture
No full textCrop improvement in bahiagrass (Paspalum notatum Flüggé) is limited by apomixis in most natural tetraploids, however, diploid sexual types occur. Production of sexual tetraploids by chromosome doubling will allow hybridization with apomictic tetraploids. Diploid bahiagrass (Paspalum notatum Flüggé) embryogenic callus tissue was exposed to three concentrations of three antimitotic chemical agents, colchicine, oryzalin and trifluralin. Callus was generated to plants and ploidy was evaluated by stomata size, mitotic chromosome counts, and flow cytometry. A total of 310 plants were verified as tetraploid of 1,432 plants that reached transplanting size. All treatments yielded 4x plants. The mean percentage success over all treatments was 22%, with means of 31% for oryzalin, 24% for colchicine and 16% for trifluralin. The high rates of success indicate that all agents can be successfully used to double chromosome numbers in bahiagrass. The percentage of 4x plants ranged from 9% (20 lM trifluralin) to 43% (20 lM oryzalin). Several treatments adversely affected regeneration. Mitotic chromosome counts are difficult and labor intensive in bahiagrass. Therefore, leaf stomata measurements were used as a preliminary screen. Data gave a bimodal distribution with overlapping tails and based on chromosome counts would have given an error rate of 12%. Flow cytometry analysis of regenerated plants resulted in mean nucleus fluorescence distributions consistent with control diploid or tetraploid values. These values agreed with chromosome counts, and this method is recommended for determining bahiagrass ploidy level. Research goals and available resources should be taken into consideration when selecting a treatment for chromosome doubling in bahiagrass.Fil: Quesenberry, Kenneth H.. University Of Florida; Estados UnidosFil: Dampier, Judith M.. University Of Florida; Estados UnidosFil: Lee, Y. Y.. University Of Florida; Estados UnidosFil: Smith, Rex L.. University Of Florida; Estados UnidosFil: Acuña, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina. University Of Florida; Estados Unido
Registration of ‘Kenhy’ and ‘Gibtuck’ Limpograss Hybrids
No full text‘Kenhy’ (Reg. No. CV-283, PI 682663) and ‘Gibtuck’ (Reg. No. CV-284, PI 682664) hybrid limpograss [Hemarthria altissima (Poir.) Stapf & C.E. Hubbard] cultivars were produced by the University of Florida Agronomy Department, a unit of the Florida Agricultural Experiment Station, and released in 2014. These two hybrids were selected from 51 hybrid seedlings produced by greenhouse hand crosses of ‘Floralta’ × ‘Bigalta’. Floralta is estimated to constitute >95% of the limpograss grown in Florida, raising concerns about genetic vulnerability. Bigalta, although less persistent than Floralta, has been shown to have slightly greater in vitro organic matter digestion. Evaluations of these hybrids were conducted at the Range Cattle Research and Education Center, Ona, FL, at two locations near Gainesville, FL, and at the North Florida Research and Education Center, Marianna, FL. Evaluations included greenhouse pot studies, small plot clipping experiments, two different mob stocking grazing experiments, and an experiment to evaluate herbage accumulation and nutritive value under stockpiling management. Kenhy and Gibtuck were selected for superior herbage accumulation, persistence under grazing defoliation, improved nutritive value compared with Floralta, and utility as stockpiled forage. Vegetative planting material was first distributed in summer 2014 to a group of growers selected by the Florida Cattlemen’s Research Committee, and further public distribution will be coordinated by this committee.Fil: Quesenberry, Kenneth H.. University of Florida; Estados UnidosFil: Sollenberger, Lynn E.. University of Florida; Estados UnidosFil: Vendramini, Joao M.B.. University of Florida; Estados UnidosFil: Wallau, Marcelo O.. University of Florida; Estados UnidosFil: Blount, Ann R.. University of Florida; Estados UnidosFil: Acuña, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentin
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