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A laboratory strain (GY) of Helicoverpa armigera (Hubner) was established from surviving larvae collected from transgenic cotton expressing a Bacillus thuringiensis var. kurstaki insecticidal protein (Bt cotton) in Gaoyang County, Hebei Province, People's Republic of China, in 2001. The GYBT strain was derived from the GY strain through 28 generations of(More)
Cadherins are a class of receptor proteins for Bacillus thuringiensis Cry1A toxins. Disruption of a cadherin gene (Ha_BtR) is associated with Cry1Ac resistance in the cotton bollworm Helicoverpa armigera [Xu, X., Yu, L., Wu, Y., 2005. Disruption of a cadherin gene associated with resistance to Cry1Ac delta-endotoxin of B. thuringiensis in H. armigera. Appl.(More)
In Big data era, the data volume produced by ground penetrating radar (GPR) application swelling and has the characteristics of heterogeneity. This paper introduces the current status of the big data. In view of the characteristics of ground penetrating radar (GPR) application used in road disease detection, we design and realize a kind of ground(More)
Disruption of the Ha_BtR (a cadherin gene) is genetically linked to resistance to Cry1Ac delta-endotoxin of Bacillus thuringiensis in the GYBT strain of Helicoverpa armigera. Brush border membrane vesicles (BBMVs) prepared from midguts of both the Cry1Ac-resistant GYBT strain (homozygous for a deletion knockout of Ha_BtR) and the susceptible GY strain(More)
Four donor-acceptor functionalized molecular materials with symmetrical structures have been synthesized and investigated for their use in optoelectronic applications. These pi-conjugated molecules consist of one electron-donating moiety, for instance, carbazole, triphenylamine, or phenothiazine at the center, and two acceptors at each side. Introduction of(More)
The characteristics of organic field-effect transistors (OFETs) were dramatically improved by chemically modifying the surface of the bottom-contact Ag or Cu source-drain (D-S) electrodes with a simple solution method. The contact resistance and energetic mismatch typically observed with Ag D-S electrodes in pentacene bottom-contact OFETs can be properly(More)
We have developed a kind of novel fused-ring small molecular acceptor, whose planar conformation can be locked by intramolecular noncovalent interaction. The formation of planar supramolecular fused-ring structure by conformation locking can effectively broaden its absorption spectrum, enhance the electron mobility, and reduce the nonradiative energy loss.(More)
Semiconducting organic nanoparticles have recently attracted increasing attention in the chemical and biomedical fields. Such nanoparticles are mainly composed of π-conjugated compounds. They possess the properties of easy synthesis, facile tuning, less toxicity and more biocompatibility relative to the existing inorganic nanoparticles. In addition, they(More)
The excellent electroluminescent (EL) properties of 1,1-disubstituted 2,3,4,5-tetraphenylsiloles, 1-methyl-1,2,3,4,5-pentaphenylsilole (MPPS), and 1,1,2,3,4,5-hexaphenylsilole (HPS) have been found. Despite some studies devoted to these materials, very little is known about the real origin of their unique EL properties. Therefore, we investigated the(More)