Honeybee larvae produce silken cocoons that provide mechanical stability to the hive. The silk proteins are small and non-repetitive and therefore can be produced at large scale by fermentation in E. coli. The recombinant proteins can be fabricated into a range of forms; however the resultant material is soluble in water and requires a post production stabilizing treatment. In this study, we de...

we prove the existence of steady 2-dimensional flows, containing a bounded vortex, and approaching a uniform flow at infinity. the data prescribed is the rearrangement class of the vorticity field. the corresponding stream function satisfies a semilinear elliptic partial differential equation. the result is proved by maximizing the kinetic energy over all flows whose vorticity fields are rearra...

The base-induced Sommelet-Hauser rearrangement of N-α-branched benzylic azetidine-2-carboxylic acid ester-derived ammonium salts to obtain α-arylazetidine-2-carboxylic acid esters was investigated. The substrates, two diastereomeric salts (1S,2S,1'S)- and (1R,2R,1'S)-2, showed different reactivities. The rearrangement of (1S,2S,1'S)-2a proceeded with a perfect N-to-C chirality transfer to provi...

Abstract The systematic investment and rearrangement of the unearthed artefacts Longtoushan Royal Cemetery Bohai Kingdom have provided a bunch new information for archaeometallurgy research on non-ferrous metal production. We synthesised latest discoveries several related mining/smelting sites urban relics making direct approach to chain copper production in this research. SEM-EDS p-XRF unveile...

The article presents the results of a contrastive description fragment picture world Vietnamese and Russian as two unrelated not neighboring peoples. object study is anthroponymic vocabulary modern languages, subject common non-coinciding features complex these languages under consideration. carried out on material dictionaries cultural studies devoted to linguistic cultures. result analysis co...

uterine leiomyomas/fibroids are the most common pelvic tumors of the female genital tract. the initiators remaining unknown, estrogens and progesterone are considered as promoters of fibroid growth. fibroids are monoclonal tumors showing 40-50% karyo-typically detectable chromosomal abnormalities. cytogenetic aberrations involving chromosomes 6, 7, 12 and 14 constitute the major chromosome abno...

The Curtius and Wolff rearrangements of peroxide-containing alkanoyl azides and diazoketones provide an effi cient entry to peroxysubstituted amines, isocyanates, carbamates, and peroxyalkanoates. Scheme 2. Substrate preparation. Reagents and conditions: (a) tBuO2H, CsOH; (b) KMnO4; (c) m-CPBA; (d) t-BuO2H, BF3OEt2; (e) H2CrO4. 7456 DUSSAULT & XU IN TETRAHEDRON LETTERS 45 (2004) 2. Curtius rear...

Thermal rearrangement of spirans (14) and (31) yields the xanthones (16,34) and diphenylrnethane (15, 32), respectively. The structure for xanthone (16), isolated from thermolysis, has been established by reduction to xanthene (20) followed by reoxidation to give xanthone (16). Alternatively, methylation of the diphenylmethane (15) followed by heating with selenium dioxide also yields xant...

It has been of interest whether and when the rearrangement of neuronal circuits can be induced after projection patterns are formed during development. Earlier studies using cats reported that the rearrangement of retinogeniculate projections could be induced even after eye-specific segregation has occurred, but detailed and quantitative characterization of this rearrangement has been lacking. ...