Single Crystal Growth at High Pressure (SOLID STATE CHEMISTRY-Multicomponent Materials)

Single crystals of a spin-1/2 Heisenberg alternating chain compound, high pressure phase of (VO)2P2O7 , was grown by slowly cooling the melt at 3 GPa. Powder XRD study at high pressure using synchrotron radiation was performed in advance to observe the formation and the melting of this compound

4-Nitro-6-[(8-quinolyl­amino)­methyl­idene]cyclo­hexa-2,4-dien-1-one

The mol­ecule of the title compound, C16H11N3O3, exists in the keto form and the C=O and N—H bonds are mutually cis in the crystal structure. There are two crystallographically independent mol­ecules per asymmetric unit with broadly similar structural data. The only noticeable difference between the two is the dihedral angles between the benzene and the quinoline rings: 1.04 (4) and 3.07 (4)°. In the structure, intra­molecular N—H⋯O(carbon­yl) and N—H⋯N(pyridine) hydrogen bonds exist but there is no evidence of formal inter­molecular hydrogen-bonding associations

Intrapulmonary venous anastomosis after PV obstraction

Pulmonary venous (PV) obstruction is associated with a poor prognosis, as well as a high risk of recurrence, following surgical treatment. It can also interfere with the successful completion of Fontan circulation in patients with complex congenital heart disease. A case of a patient who had right isomerism (also known as asplenia syndrome), total anomalous pulmonary venous connection (TAPVC), and a single right ventricle is presented. Although bilateral total occlusion of the inferior PVs was identified postoperatively, the formation of the anastomosis and collateral vessels into the superior and middle PVs enabled successful completion of Fontan circulation. Anastomoses and collateral flow of the PVs were found largely in the interlobar pleura and not in the lung parenchyma

Thickness and Orientation Dependence of Plastic Behaviors of Iron Whiskers

Stress-strain curves of iron whiskers, of which thickness ranges from 5 to 80μ, have been measured using an Instron-type tensile machine at room temperature. All of the whiskers show "work softening" of which softening rate decreases with increasing thickness. "The lower yield stress" decrease with increasing thickness in and whiskers thinner than about 35μ. Marked thickness and orientation dependence of the stress-strain curve have been found. The whiskers thinner than about 8μ show no appreciable plastic deformation after the sharp yielding, as already known in very thin whiskers. Those, 8～17μ in thickness, show nearly flat regions in their stress-strain curves after yielding and those thicker than about 17μ reveal "work hardening" after about 5% strain