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천연고무 Latex Poly(Methyl Methacrylate) 의 그라프트 공중합
김공수,신무호,최석규,금기문 한국고무학회 1993 엘라스토머 및 콤포지트 Vol.28 No.3
The graft copolymerization of methyl methacrylate(MMA) onto natural rubber latex(NRL) initiated by t-butyl hydroperoxide(t-BHPO) was investigated in aquous medium. The grafting percentage, grafting efficiency and total conversion were observed in various reaction conditions such as monomer, initiator and emulsifier concentration, reaction temperature, reaction time and agitation speed. The optimum conditions for the graft copolymerization onto natural rubber latex were as follows ; At given monomer concentration of 3×10^(-2)mole/ℓ, the maximum grafting percentage was appeared in the case of grafting in initiator concentration of 4×10^(-2)mole/ℓ and emulsifier concentration of 0.2wt.% at 40℃ for 5hrs.
금종수,김종우 한국유가공기술과학회 1998 한국유가공기술과학회지 Vol.16 No.1
All food production and distribution facilities must be kept clean and sanitized. When areas are dirty and littered, pests(insects and rodents) invade the area and fine a source of food for existence and reproduction. Microorganisms also find these conditions suitable for incubation and multiplication, Sanitation programs are invariably a four-step process : a prerinse with high pressure water to remove gross soil; physical removal of soil by detergents and mechanical aids; another rinse to remove the detergent and loose oil; the application of sanitizers to prevent recontamination before processing. This report will discuss proper plant design for sanitation, the function and application of detergents, sanitizers, cleaning equipment, and CIP (clean-in place) systems.
금종수 한국유가공기술과학회 1998 한국유가공기술과학회지 Vol.16 No.1
Pathogenic bacteria in milk have been a matter of public health concern since the early days of the dairy industry. Many diseases such as tuberculosis, brucellosis, diphtheria, scarlet fever, and gastroenteritis are transmissible via milk and milk products. Recently, attention is focused on with pathogenic bacteria, viz., Listeria monocytogenes, Yersinia enterocolitica, Campylobacter jejuni, and enteropathogenic Escherichia coli. The main objective of this paper is to review the problem of pathogenic bacteria in milk and describe the major characteristics of these bacteria and the illnesses caused by them.
임금복(Lim Keum-bok) 돈암어문학회 2006 돈암어문학 Vol.- No.19
This paper is intended to study 〈Jumong Myth〉 which's written by many writers newly. It seems to me that there are characters which are represented images of Jumong and Yoohwa in 〈Jumong Myth〉 in their works. First of all, it seems that they showed aspects of Jumong or Yoohwa as the Hero of the founder or the Hero's supporter of wisdom in their poems 『Dongmaeng』 and 『The Four Pillars and Eight Characters of Go, Ju-mong as the founder of Goguryeo Dongmyeongsungwang』by Seo, Jeong-ju, 『Lady Yoohwa』by Song Su-kwon and 『The sky of Jumong』 by Yoon Keum-cho. Only Seo‘s characters are expressed a destiny and a right but Song and Yoon's are represented the Hero itself in the narrative process through agony of realities. The secondly, it seems that Lee, Kwang-su showed aspects of Jumong as a so n?a husband?a father through the life of the Hero in his work 『Dongmyeongwang of love』. And Song Ha-chun showed aspects of Yoohwa in 〈Jumong Myth〉 through a woman as a unusual birth of process and preservation of life in his work 『Daughters of Haback』. In conclusion, it seems that their works either poems or novels are represented and recreated various images of Jumong and Yoohwa in 〈Jumong Myth〉.
On sequences that are far or near
Bang, Keum-seong 가톨릭대학교 자연과학연구소 2005 자연과학논문집 Vol.26 No.-
We study the concepts of "near" and "far" on real sequences and provide some interesting examples of them.
Protective Effect of Curcumin and Aqueous Extract of Onchengyeum on CCl_(4)-induced Hepatotoxicity
Seung, Keum Ran,Jung, Ki Hwa 덕성여자대학교 대학원 2005 덕성여자대학교 대학원 논문집 Vol.7 No.-
An aqueous extract of oriental herbal composition named Onchengyeum and curcumin, an antioxidant isolated from turmeric (Curcuma longa Linné) reduced hepatotoxicity induced by carbon tetrachloride (CCl_(4)). Improved liver function was observed by measuring the activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), blood urea nitrogen (BUN), creatinine (CRE), total cholesterol (TCHO), triglyceride (TG), low density lipoprotein cholesterol (LDL-CHO), high density lipoprotein cholesterol (HDL-CHO), total protein (TP), albumin (ALB) and total bilirubin (BIL) in serum. Hepatic parameters monitored were levels of cholesterol (CHO), triglyceride (TG), malondialdehyde (MDA) and content of cytochrome P450 (CYP), level of glutathione (GSH), activities of NADPH-CYP reductase, superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), glutathione reductase (GR), glutathione peroxidase (GPx). The histopathological examination showed that the treatment of Onchengyeum and curcumin relieved the ballooning degeneration of hepatocytes which had been generated by CCl_(4). The results suggested that hepatoprotective effects of Onchengyeum and curcumin possibly are due to their promising antioxidative activity.
Role of Preoperative Staging Ultrasound for Papillary Thyroid Microcarcinoma
Keum Hee Jung,Keum Hee Jung,Keum Hee Jung,Park Ho Yong,Lee Jeeyeon 대한외과초음파학회 2020 대한외과초음파학회지 Vol.7 No.2
Purpose: Papillary thyroid microcarcinoma (PTMC) has an excellent prognosis and can be managed with active surveillance or surgery, dependingon its location and numbers. The authors investigated the role of preoperative staging ultrasound for PTMC with statistical parameters. Methods: This study included 159 patients with PTMC who underwent thyroidectomy at Kyungpook National University Chilgok Hospital. The tumor size of PTMC, location, bilaterality and multifocality, anterior or posterior aspect of ETE, and metastasis of central/lateral neck lymph nodes were assessed by preoperative thyroid ultrasound and compared with the pathology results. The statistical parameters were calculated and compared. Results: The incidence of bilaterality of PTMC was similar in the ultrasound and pathology findings, and multifocalitywas identified in 27 cases (17.0%) and 35 cases (22.0%) in ultrasound and pathologic results, respectively. On the other hand, anterior and posterior ETE was identified only in 19 cases (11.9%) in the pathology findings,which was only approximately 50% of that in the preoperative ultrasound (36 cases, 22.6%). In the statistical parameters, most of the parameters were highest when evaluating metastatic lateral neck lymph node and lowest when evaluating metastatic central neck lymph nodes. Conclusion: Preoperative ultrasound for PTMC was useful to assess the size of PTMC, multifocality, anterior or posterior ETE, and metastatic lateral neck lymph nodes. On the other hand, as it is difficult to predict a central neck lymph node metastasis, it would be better for the operator to consider additional surgery based on the intraoperative findings.