Search results for "rush"
showing 10 items of 216 documents
Monte Carlo test of the self-consistent field theory of a polymer brush
1992
Is the riparian habitat creation an effective measure of plant conservation within the urbanized area?
2015
The study presents results of habitat creation and riparian vegetation recovery in artificial oxbow lakes in urbanized area within the large river valley. The investigation of open water, rush and wet meadows flora and vegetation in three ponds located in the city centre of Opole was conducted in years 2001–2013. Oxbow lakes were constructed as a compensation measure and no vegetation was transplanted into the ponds on purpose. 13-years observation showed that (1) the red-listed species are able to spontaneous reoccurrence after habitat restoration, but they can thrive only in first years of oxbow lakes recolonisation process, (2) there are some restoration constraints, especially in relati…
Binding analyses of Cry1Ab and Cry1Ac with membrane vesicles from Bacillus thuringiensis-resistant and -susceptible Ostrinia nubilalis.
2004
The binding properties of Bacillus thuringiensis toxins to brush border membrane vesicles of Dipel-resistant and -susceptible Ostrinia nubilalis larvae were compared using ligand-toxin immunoblot analysis, surface plasmon resonance (SPR), and radiolabeled toxin binding assays. In ligand-toxin immunoblot analysis, the number of Cry1Ab or Cry1Ac toxin binding proteins and the relative toxin binding intensity were similar in vesicles from resistant and susceptible larvae. Surface plasmon resonance with immobilized activated Cry1Ab toxin indicated that there were no significant differences in binding with fluid-phase vesicles from resistant and susceptible larvae. Homologous competition assays …
Screening for Bacillus thuringiensis Crystal Proteins Active against the Cabbage Looper, Trichoplusia ni
2000
Abstract Toxicity tests were performed to find among Cry1 and Cry2 Bacillus thuringiensis crystal proteins those with high activity against the cabbage looper. Tests were performed with neonate larvae on surface-contaminated artificial diet. The crystal proteins found to be toxic were, from higher to lower toxicity: Cry1Ac, Cry1Ab, Cry1C, Cry2Aa, Cry1J, and Cry1F (LC50 of 1.1–4.1, 3.4–4.4, 12, 34, 87, and 250 ng/cm2, respectively). Cry1B, Cry1D, and Cry1E can be considered nontoxic (LC50 higher than 2500 ng/cm2). Cry1Aa was moderately toxic to nontoxic, depending on the source (LC50 of 420 ng/cm2 from PGS and 8100 ng/cm2 from Ecogen). In vitro binding assays with trypsin-activated 125I-labe…
Overproduction of the Bacillus thuringiensis Vip3Aa16 toxin and study of its insecticidal activity against the carob moth Ectomyelois ceratoniae
2015
Abstract The vip3Aa16 gene of Bacillus thuringiensis strain BUPM95 was cloned and expressed in Escherichia coli . Optimization of Vip3A16 protein expression was conducted using Plackett–Burman design and response surface methodology. Accordingly, the optimum Vip3A16 toxin production was 170 μg/ml at 18 h post-induction time and 39 °C post-induction temperature. This corresponds to an improvement of 21 times compared to the starting conditions. The insecticidal activity, evaluated against Ectomyelois ceratoniae , displayed an LC 50 value of 40 ng/cm 2 and the midgut histopathology of Vip3Aa16 fed larvae showed vacuolization of the cytoplasm, brush border membrane destruction, vesicle formati…
Pirmreizēji diagnosticēta hroniska C vīrushepatīta morfoloģiskais un klīniskais raksturojums
2016
245 pacienti bija vīrieši un 226 bija sievietes vecumā no 18 – 73 gadiem, vidējais vecums – 42,31 gadi (SD±11,243). 51% pacientu (n=240) tika konstatēta Ishak 1. stadija. 18% (n=85) tika konstatēta 2. Ishak stadija, 13% (n=63) 0. stadija, 10% (n=47) 3. Ishak stadija, 4% (n=18) 5. Ishak stadija, 3% (n=12) 4. Ishak stadija un 1% (n=6) pacientu konstatēta 6. Ishak stadija - ciroze. Hepatīta aktivitātes indekss (HAI) visbiežāk - 46% (n=216) noteikts robežās no 6-8 punktiem. 26% un 25% (n=125 un n=117) pacientu HAI attiecīgi robežās no 0-2 un 3-5 punktiem. 381 pacients kopumā norādījis 572 iespējamos inficēšanās ceļus. 46% atzīmēja, ka ir veiktas medicīniskas manipulācijas, 18% (n=102) veikti te…
Frictional Forces between Strongly Compressed, Nonentangled Polymer Brushes: Molecular Dynamics Simulations and Scaling Theory
2010
By means of molecular dynamics simulations and scaling theory we study the response of opposing polymer brushes to constant shear motion under good solvent conditions. Model systems that contain explicit solvent molecules (Lennard-Jones dimers) are compared to solvent-free systems while varying of the distance between the grafted layers and their molecular parameters, chain length and grafting density. Our study reveals a power-law dependence of macroscopic transport properties on the Weissenberg number, W, beyond linear response. For instance, we find that the kinetic friction constant scales as μ ∼ W0.57 for large values of W. We develop a scaling theory that describes our data and previo…
Strain-Promoted Cycloaddition of Cyclopropenes with o-Quinones : A Rapid Click Reaction
2018
Abstract Novel click reactions are of continued interest in fields as diverse as bio‐conjugation, polymer science and surface chemistry. Qualification as a proper “click” reaction requires stringent criteria, including fast kinetics and high conversion, to be met. Herein, we report a novel strain‐promoted cycloaddition between cyclopropenes and o‐quinones in solution and on a surface. We demonstrate the “click character” of the reaction in solution and on surfaces for both monolayer and polymer brush functionalization.
Neuvostoliiton kulttuurivaihto-ohjelmat – kulttuurista kylmää sotaa vai diplomatiaa?
2011
Stalinin kuolemaa seuranneina vuosina Neuvostoliitto käynnisti mittavan kulttuurivaihto-ohjelmien sarjan. Huippuluokan neuvostoartistit vyöryivät länsimaisille areenoille. Rajoja avattiin turismille, laajennettiin ulkomaille suuntautunutta radiotoimintaa, ryhdyttiin vaihtamaan radio- ja televisio-ohjelmia myös länsimaiden kanssa, solmittiin ystävyyskaupunkisopimuksia ja osallistuttiin näyttävästi kansainvälisiin messuihin ja näyttelyihin. Simo Mikkonen käsittelee neuvostoajan kulttuurivaihto-ohjelmia ja pohtii niiden perimmäistä olemusta. peerReviewed