Broadband near ultraviolet random lasing in ZnO 3-D nanowalls

Broadband near ultraviolet (NUV) random laser was achieved by Au nanoparticle loaded ZnO 3-D nanowalls. Au nanoparticle was loaded on ZnO 3-D nanowalls by photo-chemical deposition method using ionic liquid. The optical confinement by the 3-D nanowalls and enhancement of incident light scattering by Au nanoparticle increase the number of resonant modes, and thus leading to a broadband multiple spectrum random lasing. The results demonstrate an important step towards to expand the application scope of NUV laser on medical imaging of cells, solid-state lighting and optical sensor.     

Anti-inflammatory activities of tormentic acid from suspension cells of Eriobotrya Japonicaex vivo and in vivo

Anti-inflammatory effects of tormentic acid (TA) were investigated ex vivo and in vivo. TA decreased the paw edema at the 4th and 5th hour after λ-carrageenin (Carr) administration, and increased the activities of catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GPx) in the liver tissue. TA also significantly attenuated the thiobarbituric acid reactive substances (TBARS) level in the edematous paw at the 5th hour after Carr injection. TA decreased the nitric oxide (NO) levels on the serum level and diminished the serum tumour necrosis factor (TNF-α) at the 5th hour after Carr injection. Western blotting revealed that the TA decreased Carr-induced inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expressions. As per results, the anti-inflammatory mechanisms of TA might be correlated to the decrease in the level of TBARS, iNOS, and COX-2 in the edema paw via increasing the activities of CAT, SOD, and GPx in the liver.     

Improvement of Strength and Energy Absorption Properties of Porous Aluminum Alloy with Aligned Unidirectional Pores Using Equal-Channel Angular Extrusion

Metallurgical and Materials Transactions A - Porous aluminum alloy with aligned unidirectional pores was fabricated by dipping A1050 tubes into A6061 semi-solid slurry. The porous aluminum alloy...