Search results for "HuR"
showing 10 items of 938 documents
A mathematical model of exposure of nontarget Lepidoptera to Bt-maize pollen expressing Cry1Ab within Europe
2010
Genetically modified (GM) maize MON810 expresses a Cry1Ab insecticidal protein, derived from Bacillus thuringiensis ( Bt ), toxic to lepidopteran target pests such as Ostrinia nubilalis . An environmental risk to non-target Lepidoptera from this GM crop is exposure to harmful amounts of Bt -containing pollen deposited on host plants in or near MON810 fields. An 11-parameter mathematical model analysed exposure of larvae of three non-target species: the butterflies Inachis io (L.), Vanessa atalanta (L.) and moth Plutella xylostella (L.), in 11 representative maize cultivation regions in four European countries. A mortality–dose relationship was integrated with a dose–distance relationship t…
Evaluating Resistance to Bt Toxin Cry1Ab by F<SUB>2</SUB> Screen in European Populations of Ostrinia nubilalis (Lepidoptera: Crambidae)
2010
ABSTRACT The large-scale cultivation of transgenic crops producing Bacillus thuringiensis (Bt) toxins have already lead to the evolution of Bt resistance in some pest populations targeted by these crops. We used the F2 screening method for further estimating the frequency of resistance alleles of the European corn borer, Ostrinia nubilalis (Hubner) (Lepidoptera: Crambidae), to Bt maize, Zea mays L., producing the CrylAb toxin. In France, Germany, and Italy, 784, 455, and 80 lines of European corn borer were screened for resistance to Mon810 maize, respectively. In Slovakia, 26 lines were screened for resistance to the CrylAb toxin. The cost of F2 screen performed in the four countries varie…
Komētas 67P/Churyumov-Gerasimenko zemas kohēzijas daļiņu elektrostatiskā fragmentācija
2015
Pēc desmit ceļā pavadītiem gadiem un 2.5 gadiem pavadītiem hibernācijas periodā, Eiropas kosmosa aģentūras (angļu: European Space Agency, ESA) izpētes misija Rosetta uz komētu 67P/Churyumov-Gerasimenko ir pilnā datu ieguves režīmā, ar visiem tās 22 zinātniskajiem instrumentiem darbībā, lai izprastu mūsu Saules Sistēmas pirmsākumus. Komētas fizikālais raksturojums parāda, ka tās aptuvenais vidējais blīvums ir ~470 kg/m3 ar relatīvi mīkstu dabu un porozitāti no 70% līdz 80%. Šādām īpašībām apveltītas arī komētas mazākās daļiņas – putekļu graudi, ko parāda Rosettas COSIMA un MIDAS instrumenti - tām ir zema kohēzija tās viegli sadalās. Fizikālie procesi, kas iespējams apraksta šo sadalīšanos ir…
The Philae lander mission and science overview.
2017
The Philae lander accomplished the first soft landing and the first scientific experiments of a human-made spacecraft on the surface of a comet. Planned, expected and unexpected activities and events happened during the descent, the touch-downs, the hopping across and the stay and operations on the surface. The key results were obtained during 12–14 November 2014, at 3 AU from the Sun, during the 63 h long period of the descent and of the first science sequence on the surface. Thereafter, Philae went into hibernation, waking up again in late April 2015 with subsequent communication periods with Earth (via the orbiter), too short to enable new scientific activities. The science return of the…
Sublimation of icy aggregates in the coma of comet 67P/Churyumov–Gerasimenko detected with the OSIRIS cameras on board Rosetta
2016
Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov¿Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet's dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with the WAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness a…
Mining of new insecticidal protein genes plus determination of the insecticidal spectrum and mode of action of Bacillus thuringiensis Vip3Ca protein
2019
Bacillus thuringiensis és un bacteri que pertany al grup de Bacillus cereus i produeix una gran varietat de proteïnes insecticides juntament amb altres factors de virulència que contribueixen a la seva patogenicitat. Bacillus thuringiensis s'ha considerat com el agent bioinsecticida amb més èxit durant el segle passat. Actualment, és àmpliament utilitzat com agent microbià per a les principals plagues d'insectes com a formulat (selecció de aïllats de B. thuringiensis escollits per la seua combinació de proteïnes insecticides present en el cristall parasporal) o mitjançant l’expressió de les proteïnes insecticides (cultius Bt) en plantes d’interès agronòmic (dacsa, cotó, soja, etc.). En quan…
Episcopatvs qvondam Cvroniensis secvlarisatvs, sive svmmaria dedvctio, Episcopatvm Cvroniensem, qvi nvnc districtvs Piltensis dicitvr, vt secvlarem R…
1688
Liturģijas jeb Slavas dziesmas un lūgšanas, piesaukšanas un aizlūgšanas
1847
Mitauisches Gesangbuch
1771
Sastādītājs Johans Frīdrihs Kazimirs Rozenbergers uzrādīts priekšvārdā.