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Ziegler-Natta 폐촉매외 Bauxite에서 Alumina의 抽出
김종택,김명철,윤주식 경북대학교 산업기술연구소 1987 産業技術硏究誌 Vol.14 No.-
Alumina extraction technique was developed by treating Bauxite and waste Ziegler-Natta catalyst with 3N~10 N NaOH Solution. Reaction times from 2hrs to 24hrs were compared with the amount of alumina recovered after CO_2 gas neutralization. About 50% of alumina were extracted out from the samples by treating 6~7 N NaOH for 10 hours. This low concentrated NaOH solution technique was very effective for little quantity production of alumina with relatively simple reaction facilities. And this method was definately good for the better recovery of NaOH, and for the raw material such as waste Ziegler-Natta Catalyst.
김종택 대한양계협회 1993 월간 양계 Vol.25 No.4
산란개시전후부터 40주령전후까지의 기간은 질병이 가장 발생하기 쉬운 시기입니다. 또한 이시기에 질병이 발생했다면 잘 낫지도 않아 치료기간이 늘어나고 치료비용, 도태, 폐사 등의 증가로 많은 손실이 일어나게 되는데 이러한 원인은 어디에서 일어날까요?
김종택,한정희,정경동,Kim Jong-taek,Han Jeong-hee,Choung Geong-dong 한국임상수의학회 1994 한국임상수의학회지 Vol.11 No.2
A 14-year-old virgin, female Yorkshire Terrier showed enlarged abdomen after udderectomy was diagnosed with canine mammary gland tumor accompanied with hydrometra. Gross findings appeared a white-yellowish $l0{\times}7{\times}7cm sized solid mass containing cysts filled with various colored mucoid fluids in the udder. Both uteri were distended greatly with white-yellowish watery fluids and their serosal surfaces were translucent. Characteristic micyoscopic findings in the mass of the udder showed great expansion of the mammary lobule and stroma and complete replacement of the glandular elements by prolifaration of myoepithelial cells. The mucosa of the uterus showed severe atrophy of the uterine epithelium.