Synthesis of Y2O3 Films by Spray Coating with Milled EDTA ・Y・H Complexes

Yttrium oxide (Y2O3) films have been successfully deposited with yttrium-ethylenediaminetetraacetic acid (EDTA・Y・H) complexes prepared by various milling techniques. The effects of the properties of the EDTA・Y・H complex on the properties of the deposited Y2O3 films have been analyzed. Seven different types of the raw EDTA・Y・H complexes were prepared by various commercial milling techniques such as ball milling, hammer milling, commercial milling, and mortar milling. The milled EDTA・Y・H complexes exhibited various particle sizes and distributions, depending on the milling method. Furthermore, we analyzed the crystal structure, morphology and elemental distribution profile of the metal oxide films deposited on stainless steel substrate with the milled EDTA・Y・H complexes. Depending on the milling technique, the flow properties of the raw powders differed. The X-ray diffraction pattern of all the samples revealed the formation of Y2O3 crystalline phase, irrespective of the milling technique. Of all the different milling techniques, the hammer milling technique is considered suitable for fabricating dense Y2O3 films

Turning of BN free-machining steel

金沢大学理工研究域機械工学系This paper deals with the machinability of BN (Boron Nitride) free-machining steel in turning. Tested work materials were plane carbon steel JIS S45C and BN free-machining steel. The JIS S45C used as the standard. The tool wear in turning BN free-machining steel was smaller than that in turning standard steel. BN free-machining steel showed slightly lower cutting temperature and smaller cutting force to compare with standard steel at the tested cutting speeds. At the tool wear region of P grade carbide tool after turning BN free-machining steel at high cutting speed, Al and N were detected as a layer. It is thought that one of the main reasons of outstanding machinability of BN free-machining steel is the deposited layer containing Al and N acts as diffusion barrier at the tool-chip interface. In turning larger Al content BN added steel with higher Ti content cutting tool, the influence of BN addition on the tool wear reduction was more remarkable.[議事録

Synthesis of Y2O3 Films by Spray Coating with Milled EDTA ・Y・H Complexes

Yttrium oxide (Y2O3) films have been successfully deposited with yttrium-ethylenediaminetetraacetic acid (EDTA・Y・H) complexes prepared by various milling techniques. The effects of the properties of the EDTA・Y・H complex on the properties of the deposited Y2O3 films have been analyzed. Seven different types of the raw EDTA・Y・H complexes were prepared by various commercial milling techniques such as ball milling, hammer milling, commercial milling, and mortar milling. The milled EDTA・Y・H complexes exhibited various particle sizes and distributions, depending on the milling method. Furthermore, we analyzed the crystal structure, morphology and elemental distribution profile of the metal oxide films deposited on stainless steel substrate with the milled EDTA・Y・H complexes. Depending on the milling technique, the flow properties of the raw powders differed. The X-ray diffraction pattern of all the samples revealed the formation of Y2O3 crystalline phase, irrespective of the milling technique. Of all the different milling techniques, the hammer milling technique is considered suitable for fabricating dense Y2O3 films

Improvement of the Digestion in Pigs by Using Microencapsulated Asperase

Asperase from Aspergillus usamii mut. shiro-usamii was microencapsulated by the spray-dry method in order to decrease fecal quantity and improve the digestion of pigs. Capsules were prepared with a yield of about 88% and a mean particle diameter of 10-20 μm. The microencapsulated asperase was very resistant to digestion in the gastric enviromnent (pH 1.2), and the efficiency of release in intestinal fluids (pH 6.8) was about 100% within 30 min. A feeding study of 100-d-old pigs was performed to confirm the decrease of the fecal amount and the improvement in digestion due to microencapsulated asperase. In a group fed the diet that contained microencapsulated asperase, a significant reduction of 43% in the fecal quantity was observed (p < 0.01 vs. control). In addition, when pigs were fed the microencapsulated aspcrase, apparent digestion coefficients of dry matter, crude protein, nitrogen-free extract, ether extract, and crude fiber were observed a significant augmentation of 5.4%, 12.8%, 1.2%, 17.8%, and 13.1%, respectively, compared with those in the group of pigs fed the standard diet. These results suggest that the addition of microencapsulated asperase is the primary cause o

The prognostic impact of pulmonary metastasectomy in recurrent gynecologic cancers: a retrospective single-institution study

The aim was to examine the impact of pulmonary metastasectomy in patients with recurrent gynecologic cancers. Thirty-seven patients with isolated lung metastases (2 years) was significantly favorable (5-year OS 100% vs. 41.7%, p=0.006). Among the 6 patients with re-recurrence of lung metastases, 5 patients underwent a second pulmonary metastasectomy, and all of the patients are currently alive without disease. None of the 29 operations yielded severe complications. Although the survival rate showed a tendency to be higher in the surgery group than in the chemotherapy-only group, no significant difference was observed (5-year OS 81.7% vs. 49.5%, p=0.072). Our results indicate that pulmonary metastasectomy contributed to long-term survival with a low-risk of complications. Surgery to remove isolated lung metastases might provide a favorable prognosis for patients with long recurrence-free intervals and for patients with chemoresistant or re-recurrent tumors