Polarization Closure in PbZr(0.42)Ti(0.58)O3 Nanodots

Domain states in PbZr(0.42)Ti(0.58)O3 single-crystal ferroelectric nanodots, formed on cooling through the Curie temperature, were imaged by transmission electron microscopy. In the majority of cases, 90o stripe domains were found to form into four distinct “bundles” or quadrants. Detailed analysis of the dipole orientations in the system was undertaken, using both dark-field imaging and an assumption that charged domain walls were energetically unfavorable in comparison to uncharged walls. On this basis, we conclude that the dipoles in these nanodots are arranged such that the resultant polarizations, associated with the four quadrant domain bundles, form into a closed loop. This “polarization closure” pattern is reminiscent of the flux-closure already commonly observed in soft ferromagnetic microdots but to date unseen in analogous ferroelectric dots.

Coated-platelet levels in patients with Type 1 and with Type 2 diabetes mellitus

Coated-platelet levels were quantified in 58 people with Type 1 diabetes, 90 with Type 2 diabetes, and 54 non-diabetic controls. In diabetes high coated-platelet levels were related to smoking and glucose control drugs, but not to glycaemia or other drugs. Prospective studies should evaluate coated-platelets and complications and drug effects.

Unesp Ciência, 2014, ano 6, número 58

Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP

Atlas" vodânogo soobŝenìâ meždu gorodom" Tamerforsom" i Kirhšpilem" Virdojs" = Kartasto osoittava vesimatkat Tampereen kaupungin ja Wirtain pitäjän välillä, toimitettu vuosina 1856, 57 ja 58 sotalaivaston perämiesosaston upsierien Näsijärven vesillä tekemäin mittausten mukaan

Kansinimeke: Näsijärven Walta-Kartta

Osbert Lancaster (Aldeburgh 58) [les Mamelles de Tirésias]

Ancien possesseur : Poulenc, Francis (1899-1963)