The influence of nanosized iron particles on morphological parameters of blood and reproductive ability of sows in the third trimester of gestation

The article presents the results of experimental studies on the use of nanosized iron powder in the third trimester of gestation on the reproduction processes of sows. The studies were carried out in the conditions of the farm. The physiological state of pregnant sows was determined by hematological parameters. It was found that iron NRP contributed to an increase in the number of red blood cells and hemoglobin in the blood of sows, compared with the control 20 days before farrowing, the content of red blood cells in the blood of experimental sows was 6.3% significantly higher compared to the control, and hemoglobin by 3.8 %. For 10 days, before farrowing, respectively, by 6.9 % and 5.2% higher. The indicators that characterize the reproductive ability of sows are: multiplicity, large fertility, the number of piglets in the nest and their average live weight. The use of ultrafine iron powder in the diets of pregnant sows in the third trimester of gestation contributed to the improvement of the overall physiological state, confirmed by the improvement of hematological parameters and had a positive effect on reproductive ability. The weight of the nest in the experimental group of sows on the day of farrowing was 4.1 % higher, the large-fruiting rate was 3.1 %, compared to the control animals.

Stabilization and delivery of bioavailable nanosized iron by fish sperm DNA

Nanosized iron is a promising candidate as an iron fortificant due to its good solubility and bioavailability.

Supercritical Antisolvent Processing of Nitrocellulose: Downscaling to Nanosize, Reducing Friction Sensitivity and Introducing Burning Rate Catalyst

A supercritical antisolvent process has been applied to obtain the nitrocellulose nanoparticles with an average size of 190 nm from the nitrocellulose fibers of 20 μm in diameter. Compared to the micron-sized powder, nano-nitrocellulose is characterized with a slightly lower decomposition onset, however, the friction sensitivity has been improved substantially along with the burning rate increasing from 3.8 to 4.7 mm·s−1 at 2 MPa. Also, the proposed approach allows the production of stable nitrocellulose composites. Thus, the addition of 1 wt.% carbon nanotubes further improves the sensitivity of the nano-nitrocellulose up to the friction-insensitive level. Moreover, the simultaneous introduction of carbon nanotubes and nanosized iron oxide catalyzes the combustion process evidenced by a high-speed filming and resulting in the 20% burning rate increasing at 12 MPa. The presented approach to the processing of energetic nanomaterials based on the supercritical fluid technology opens the way to the production of nitrocellulose-based nanopowders with improved performance.