The bones were placed on a grid view specimen container (CIRS, Norfolk, VA, USA) at the 3, 6, 9, and 12 o'clock positions, and exposed to X-rays using a Philips Mammo diagnostic 3000 X-ray machine (Philips Healthcare, Andover, MA, USA) at controlled exposures of 62 kVp, 4 mAs.
Experimental results indicated that the combined core sandwich specimens provided increased stiffness, specific stiffness, energy absorption and critical load, which were higher than the sum of honeycomb core sandwich specimens and grid core sandwich specimens.
These geo-grid beam specimens are tested under single point static loading to obtain the comparative load deflection behavior.
A carbon-coated 200-mesh copper specimen grid was glow-discharged for 1.5 min. One drop of nanoparticle suspension was deposited on the grid and allowed to stand for 1.5 min after which any excess fluid was removed with filter paper.
The specimen grid is carried in a small holder in a movable specimen stage.
The particles were then transferred by an ultrasonic treatment into a solution and further transferred to a microscopic specimen grid.
The presence of Cu, corresponding to the signal from the copper TEM grid supporting the specimen, and oxygen was clearly seen.
Diluted suspensions and nanoemulsions were deposited on specimen grid (Formvar-Carbon support films, Electron Microscopy Sciences), negatively stained with uranyl acetate solution (2% w/v) [37] and observed at different magnifications.
About 3 μl of aliquots (∼20 μg protein/ml in 50 mmol/L Tris, pH 7.6, 100 mmol/L ammonium sulfate, 10% (v/v) glycerol, 1 mmol/L EDTA, 10 μmol/L ZnSO4, 0.02% NP-40, 10 mmol/β-ME) was applied to a carbon-coated 400-mesh Cu EM specimen grid freshly glow discharged and was then preserved by staining with 0.75 % (w/w) uranyl formate solution.
The grids were brought from Ted Pella, Inc.; 300 mesh copper specimen grids with Formvar/Carbon support films.
