http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Copper Penetration of a Lance in a Smelting Furnace of the Mitsubishi Process
Sung‑Mi Lim,Kyung‑Woo Yi 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.4
This study was aimed to determine the main cause of lance fracture in a smelting furnace of the Mitsubishi continuous processfor Cu production. Investigation of lances used in field operations, thermodynamic analysis and laboratory experiments wereconducted. By analyzing the lances, damaged surface of the lances and penetration of matte components into the lance wereobserved. The depth of damage was strongly dependent on the lance height which was related to temperature. To determinethe temperature of the lance fracture, thermodynamics calculations and laboratory experiments were conducted. Both resultsshowed that the formation of Cu liquids above 1100 °C could be the main cause of lance fracture during operation of Cusmelting furnaces of the Mitsubishi process.
Extension of Lance Life by Change of Height of Lances in the Smelting Furnace of Mitsubishi Process
Sung‑Mi Lim,Soo‑Sang Park,Kyung‑Woo Yi 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10
A Mitsubishi process, which pertains to continuous Cu production, involves a smelting furnace, cleaning furnace, and convertingfurnace connected in series. One of the main issues pertaining to the smelting furnace is the frequent interruption ofoperations required to allow the inspection and replacement of lances, because lances are frequently fractured. The presentstudy was aimed at modifying the operating conditions of the smelting furnace to suppress lance fractures. A numericalmodel was developed to simulate the transport phenomena in the furnace, including multi-phase behaviors. The simulationresults showed that the lances were exposed to a severely erosive atmosphere with high temperatures. Further calculationindicated that raising the positions of the lances could lower the temperature of the lances, and reducing the occurrence ofsplashed melt, which contains erosive sulfides. The smelting furnace was operated under the conditions of the raised lanceheight and attentively monitored for several months. It was confirmed that by implementing such a change of the lanceheights, the occurrence of lance failures has been considerably reduced without notably affecting the reaction ability of thesmelting furnace.
Park, Jinbong,Jeon, Yong-Deok,Kim, Hye-Lin,Lim, Hara,Jung, Yunu,Youn, Dong-Hyun,Jeong, Mi-Young,Kim, Hyun-Ju,Kim, Sung-Hoon,Kim, Su-Jin,Hong, Seung-Heon,Um, Jae-Young Hindawi Publishing Corporation 2013 Evidence-based Complementary and Alternative Medic Vol.2013 No.-
<P>Obesity has become a major health threat in developed countries. However, current medications for obesity are limited because of their adverse effects. Interest in natural products for the treatment of obesity is thus rapidly growing. Korean Medicine (KM) is characterized by the wide use of herbal formulas. However, the combination rule of herbal formulas in KM lacks experimental evidence. According to <I>Shennong's Classic of Materia Medica</I>, the earliest book of herbal medicine, <I>Veratrum nigrum</I> (VN) has antagonistic features against <I>Panax ginseng</I> (PG), and the PG-VN pair is strictly forbidden. In this study, we have shown the effects of PG, VN, and their combination on obesity in high-fat (HF) diet-induced obese mice and in 3T3-L1 cells. PG, VN, and PG-VN combination significantly reduced weight gain and the fat pad weight in HF diet-induced obese mice. They also significantly decreased lipid accumulation and the expressions of two major adipogenesis factors, PPAR<I><I>γ</I></I> and C/EBP<I><I>α</I></I>, in 3T3-L1 cells. In addition, the PG-VN combination had synergistic effects compared with the mixture of extracts of PG and VN on inhibition of PPAR<I><I>γ</I></I> and C/EBP<I><I>α</I></I> expressions at lower doses. These results indicate a new potential anti-obese pharmacotherapy and also provide scientific evidence supporting the usage of herbal combinations instead of mixtures in KM.</P>
Novel Glycolipoproteins from Ginseng
Mi Kyung Pyo,Sun-Hye Choi,Sung Hee Hwang,Tae-Joon Shin,Byung-Hwan Lee,Sang-Mok Lee,Yoong-Ho Lim,Dong-Hyun Kim,Seung-Yeol Nah 고려인삼학회 2011 Journal of Ginseng Research Vol.35 No.1
Ginseng has been used as a general tonic agent to invigorate human body. In the present study, we isolated novel glycolipoproteins from ginseng that activate Ca²?-activated Cl- channel (CaCC) in Xenopus oocytes and transiently increase intracellular free Ca²? concentration ([Ca²?]i) in mouse Ehrlich ascites tumor cells. We named the active ingredients as gintonin. Gintonin exists in at least six different forms. The native molecular weight of gintonin is about 67 kDa but its apparent molecular weight is about 13 kDa, indicating that gintonin might be a pentamer. Gintonin is rich in hydrophobic amino acids. Its main carbohydrates are glucose and glucosamine. Its lipid components are linoleic, palmitic, oleic, and stearic acids. Gintonin actions were blocked by U73122, a phospholipase C inhibitor, 2-aminoethxydiphenyl borate, an inositol 1,4,5-trisphosphate receptor antagonist, or bis (o-aminophenoxy) ethane-N,N,N0,N0-tetracetic acid acetoxymethyl ester, a membrane permeable Ca²? chelator. In the present study, we for the fi rst time isolated novel gintonin and showed the signaling pathways on gintonin-mediated CaCC activations and transient increase of [Ca²?]i. Since [Ca²?]i as a second messenger plays a pivotal role in the regulation of diverse Ca²?-dependent intracellular signal pathways, gintonin-mediated regulations of [Ca²?]i might contribute to biological actions of ginseng.
Albumin and Antioxidants Inhibit Serum-deprivation-induced Cell Adhesion in Hematopoietic Cells
( Mi Jin Han ),( Sung Mee Lim ),( Yu Lee Kim ),( Hyo Lim Kim ),( Kyeok Kim ),( Santosh J. Sacket ),( Ji Yeong Jo ),( Yoe Sik Bae ),( Fumikazu Okajima ),( Dong Soon Im ) 한국응용약물학회 2008 Biomolecules & Therapeutics(구 응용약물학회지) Vol.16 No.4
A New Gerbera Cultivar "Pink Swan"; High-yielding Cultivar with Pink and Semi-double for Cut-flower
Sang Kun Park,Jin Hee Lim,Mi Seon Kim,Hyang Young Joung,Hak Ki Shin,Hae Ryong Cho,Hye Kyung Rhee 한국육종학회 2009 한국육종학회지 Vol.41 No.4
A new gerbera variety "Pink Swan" was released by the National Horticultural Research Institute (NHRI) in 2007. A cross was made between "Royal" with orange and single and 'Himalaya' with white and semi-double in 2004. After investigation of the characteristics for 4 years (from 2004 to 2007), it was selected specially for the use of cut-flower. "Pink Swan" is a vigorous medium-sized cultivar with pink (RHS R48D), yellow green center and semi-double. The average flower diameter is 10.6 cm. And inner ray floret and disc diameter is 5.99cm and 1.83cm, respectively. It produces a large yield with continuous supply of flowers and has adequate peduncle height. We believe that "Pink Swan" has a great potential for expanding cultivated area of domestic gerbera cultivar and increasing farmers-income.