Corrosion-Induced Concrete Cracking Model Considering Corrosion-Filled Paste

A TCP–TCL model is established to describe the relationship between the thickness of the corrosion-filled paste (CP) and that of the corrosion layer (CL). This model can describe the phenomenon that the corrosion filling in the concrete pores and accumulating at the steel/concrete interface occur synchronously. Based on the TCP–TCL model, a corrosion-induced concrete cracking model, which can quantitatively consider corrosion-filled paste at concrete/steel interface, is proposed. Combined with damage analysis in corrosion-induced cracking process of concrete cover, the model is developed to describe the quantity of steel corrosion required to crack the concrete surface

A eukaryotic initiation factor 5C is upregulated during metamorphosis in the cotton bollworm, Helicoverpa armigera

<p>Abstract</p> <p>Background</p> <p>The orthologs of eukaryotic initiation factor 5C (eIF5C) are essential to the initiation of protein translation, and their regulation during development is not well known.</p> <p>Results</p> <p>A cDNA encoding a polypeptide of 419 amino acids containing an N-terminal leucine zipper motif and a C-terminal eIF5C domain was cloned from metamorphic larvae of <it>Helicoverpa armigera</it>. It was subsequently named <it>Ha-eIF5C</it>. Quantitative real-time PCR (QRT-PCR) revealed a high expression of the mRNA of <it>Ha-eIF5C </it>in the head-thorax, integument, midgut, and fat body during metamorphosis. Immunohistochemistry suggested that Ha-eIF5C was distributed into both the cytoplasm and the nucleus in the midgut, fat body and integument. <it>Ha-eIF5C </it>expression was upregulated by 20-hydroxyecdysone (20E). Furthermore, the transcription of <it>Ha-eIF5C </it>was down regulated after silencing of <it>ecdysteroid receptor (EcR) </it>or <it>Ultraspiracle protein (USP) </it>by RNAi.</p> <p>Conclusion</p> <p>These results suggested that during metamorphosis of the cotton bollworm, <it>Ha-eIF5C </it>was upregulated by 20E through the EcR and USP transcription factors.</p

rac-2-{[1-(1-Adamant­yl)eth­yl]imino­meth­yl}-5-meth­oxy­phenol

A novel Schiff base compound, C20H27NO2, was obtained by a condensation of rimantadine and 2-hy­droxy-4-meth­oxy­benzaldehyde. An intra­molecular O—H⋯N hydrogen bond supports the phenol–imine tautomeric form. The adamantane and imino­methyl-4-meth­oxy­phenol units are arranged in a folded conformation [C—N—C—C torsion angle = 110.9 (3)°]. In the crystal, highly hydro­phobic adamantane moieties are inserted between the imino­methyl-4-meth­oxy­phenol units in a sandwich-like arrangement along the c axis

(E)-N-Benzyl­ideneadamantan-1-amine

In the title compound, C17H21N, the dihedral angle between the benzene ring and the imine group (—N=) is 5.1 (4)°. In the adamantane group, the C—C—C bond angles range from 107.88 (19) to 111.33 (17)°. Only weak van der Waals inter­actions contribute to the contribute to the packing of the molecules in the crystal.