슬러지 전처리와 고농도 MBR을 이용한 슬러지 감량화 공정연구

한규철,염익태,정우진,김형수 대한상하수도학회 2003 상하수도학회지 Vol.17 No.4

From this research, the performances of a sludge reduction in the sewage sludge aerobic digestion was experimented by using a sludge pretreatment and membrane bioreactor. The submerged plate membrane was used as the solid-liquid separation membrane . After drawing small amounts of sludge in a bioreactor and then doing the alkaline treatment and ozone treatment, the sludge was sent to back to the reactor. The HRT in the reactor was set as 5 days and the operation in the reactor was carried out at the DO of 1㎎/L on average. After 100 days of operation in the reactor, it was shown that the reduction efficiency of total solids was more than 83%. Most of volatile solids were removed through mineralization, and the considerable portion of the nonvolatile solids was dissolved and then flowed out with the effluent. Only about 16.3% of total solids in the sludge was accmulated in the reactor even without the loss of volatile fraction. Also, by deriving nitrification and denitrification in one reactor simultaneously, more than 90% of nitrogen removal effect was realized and the experiment was run smoothly without fouling of membrane, even in the high concentration of MLSS. Based on this experiment. sludge can be reduced considerably at a low HRT by these two newly suggested approach.

CFRP와 콘크리트 계면에서의 부착특성

한상훈,조홍동,박중열,황선일,김형진 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.2

Externally bonding technique of CFRP(Carbon Fiber Reinforced Polymer Plate) is widely used in strengthening of concrete structures, and the improving effect of flexural strength and stiffness has been proven by early researchers. But, strengthened concrete structures present brittle failure mode accompanied with debonding of CFRP. That is, it means that the behavior of concrete structures strengthened with CFRP is mainly dependent on mechanical characteristics of CFRP and concrete interface. Therefore, double-lap shear test was performed to examine the bond characteristics on interface. The experimental variables are included with the strength of concrete, bond length and width. Test results showed that effective bond length of CFRP is approximately 30cm and maximum interfacial shear stress at specimen failure is 47 kgf/㎠.

菟絲子 의效能에 대한 硏究

진상식,황의현,김형창,김천수,오광수,한종현 한국전통의학연구소 2002 한국전통의학지 Vol.12 No.1

The purpose of this study is to determine the effect of Semen Cuscutae on phenylephrine(PE) and KCI induced contraction of isolated rat thoracic aorta. Contractile force was measured with force displacement transducer under 1.5 g loading tension. Contraction evoked by PE (ED_(50)) was relaxed significantly by Semen Cuscutae. The mean percent relaxing of PE induced contraction was 60.6% (p<0.01) after 300 ㎕/㎖ Semen Cuscutae, but the mean percent contraction of KCI induced contraction was 10.4% (p<0.05) after 300 ㎕/㎖ Semen Cuscutae. Vasorelaxation by Semen Cuscutae was significantly reduced after with and without endothelial cells. Pretreatment of aortic rings with L-NAME (100 μM), a nitric oxide synthase inhibitor, indomethacin (3 μM), an inhibitor of cyclooxygenase, methylene blue (10 μM), guanylyl cyclase inhibitor, propranolol (1 μM), a β-adrenoceptor antagonist, atropine (1 μM), a muscarinic receptor antagonist and diltiazem (10 μM), a Ca^(2+)-channel blocker was recovered the effect aorta. These results indicate that Semen Cuscutae can relax EP induced contraction of isolated rat thoracic aorta and that this increasing contraction related to epithelium and various effect.

유방종괴의 감별에 있어서 초음파 소견의 진단척도 타당성

한헌,이창근,이경희,김형진,서창해 대한초음파의학회 1998 ULTRASONOGRAPHY Vol.17 No.2

인삼복용이 태권도선수의 대사기질 및 호르몬에 미치는 영향

박승한,김진형 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5

The purpose of this study was to investigate the effect of ginseng supplementation on metabolic substrate(glucose, FFA), metabolic hormone(catecholamine). Fourteen Taekwondo athletes were matched and randomly placed into ginseng(22.9±1.79yrs; n=7) and placebo supplementation(22.4±2.12yrs; n=7). All subjects were either supplemented a standardized ginseng capsule(containing 300㎎ of ginseng in each capsule for ginseng supplementation group) or ingested a placebo capsule(containing 300㎎ of rice powder in each capsule for placebo group) for 4wks. Both capsules used in this study had the same size, weight, shape, and color. Before and after the intervention, each subjects performed incremental cycle ergometer test under controlled laboratory conditions. All exercise sessions took place on a Monark ergometer(@ 50 RPM), performing 20 minutes of cycling at 2kp. After 20minutes, work rate was gradually increased(1kp/every 2minutes) until exhaustion. Blood samples were obtained before and immediately after exercise session. Acute exercise increased blood glucose concentration, but FFA concentration did not induce any significant change. Catecholamine(epinephrine, norepinephrine) concentration increased significantly after immediately exercise. After ginseng supplementation glucose and FFA was observed unchanged. There was no measurable change in epinephrine concentration with ginseng supplementation. However ginseng supplementation increased norepinephrine concentration after immediately exercise. In conclusion acute exercise increase blood glucose and catecholamine concentration. Ginseng supplementation enhanced this exercise induced increase of metabolic hormone. Further study needed to elucidate the exact mechanism with ginseng supplementation. However ginseng supplementation increased norepinephrine concentration after immediately exercise. In conclusion acute exercise increase blood glucose and catecholamine concentration. Ginseng supplementation enhanced this exercise induced increase of metabolic hormone. Furthere study needed to elucidate the exact mechanism with ginseng supplementation and exercise related to muscle glycogen and DNA syntheses.

악성 거대 난소 점액성 종양 1예

신형도,박형진,김홍곤,한원철 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.1

Mucinous tumor are cystic tumors with loculus lined with mucin-secreting epithelium constitute approximately 8-10% of primary epithelial ovarian tumors. Of all mucinous neoplasms, 75-85% are benign. It is often reach very large size particularly with the benign counterpart being reported on occasion to have exceed 100 lbs. Malignancy develops in 5-10% of benign mucinous cysts. About 15-20% of neoplasms are bilateral. We experienced a huge ovarian mucinous tumor of 155 ㎏. measured 42 × 30 × 28 ㎝ in size, and the volume of cystic contents was about 10 L in a nulligravida 36-year-old woman. Pathologic diagnosis was moderately differentiated mucinous cystadenocarcinoma of right ovary. So, we presented with a brief review of literatures.

악성 점막하 종양과의 구별이 어려웠던 Gastritis Cystica Profunda 1예

선제형,박진석,한민석,김수항,김우진,박인형,이숭,유종선,박찬국 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Gastritis cystica profunda (GCP) is a rare disease characterized by gastric foveolae elongation along with hyperplasia and cystic dilatation of the gastric glands extending into the tissue beneath the submucosa. GCP mainly develops at the gastroenterostomy stoma but can arise in a stomach that has not undergone surgery. The proposed pathogenesis is related to chronic inflammation, ischemia and the presence of a foreign body. GCP may present as a submucosal tumor, Polyp or a giant gastric mucosal fold. Endoscopic ultrasonography (EUS) is an effective diagnostic method for differentiating GCP from protruding and elevated gastric lesions. We report a case of GCP along with the endoscopic and EUS findings that were indistinguishable from a malignant submucosal tumor.

곰쓸개 복용 후 발생한 육안적 혈뇨와 신유두부 괴사증 1예

김우진,한민석,김수항,박인형,박진석,선제형,홍세인,박옥영,신정현,이숭,신병철 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Renal papillary necrosis occurs most commonly in association with urinary tract infection, diabetes mellitus, sickle cell disease, vascular disease, and analgesic nephropathy. Clinical presentation may be related to symptoms of pyelonephritis such as flank pain, renal colic, hematuria, Proteinuria, recurrent fever. The necrotic tissue may be sloughed off, and the diagnosis can sometimes be made by finding piece of renal medullary tissue in the urine. Pyelography may demonstrate cavities and sinuses in the resion of papillae. Anuria & oliguria can lead to the acute renal failure, and especially prognosis and progress may be affect influenced by urinary infection. We report a case of renal papillary necrosis with ingestion of bear gallbladder. On pyelography, Persistent contrast is diagnostic clue of renal papillary necrosis. This case is not be related to urinary tract infection, but occurred acute renal failure. Expectant treatment was gone.

Assessment of In Vitro Assay System for Thyroid HormoneDisruptors Using Rat Pituitary GH3 Cells

Hee Jin Kim1,Hae Young Park1,Jeonga Kim1,Il Hyun Kang2,Tae Sung Kim2,Soon Young Han2,Tae Seok Kang2,Kui Lea Park2,Hyung Sik Kim1 한국독성학회 2006 Toxicological Research Vol.22 No.4

The development of in vitro assays has been recommended to screening and test-ing the potential endocrine disruptors (EDs). These assay systems focus only on identifying thethe thyroid hormone (TH) disruptors. The aim of this study was to evaluate a test system to detectTH disruptors using rat pituitary tumor GH3 cells. The test system is based on the TH-dependentincrease in growth rate. As expected, L-3,5,3-triiodothyronine (T3) markedly induced a morphologicalchange in GH 3 cells from flattened fibroblastic types to rounded or spindle-shaped types. T3 stimu-lated GH3 cell growth in a dose-dependent manner with the maximum growth-stimulating effect9 M. In addition, T3 increased the release of growth hor-mone and prolactin into the medium of the GH3 cells culture. Using this assay system, the TH-dis-rupting activities of bisphenol A (BPA) and its related compounds were examined. BPA,dimethylbisphenol A (DMBPA), and TCI-EP significantly enhanced the growth of GH3 cells in therange of 1 × 10-5M to 1 × 10-6M concentrations. In conclusion, this in vitro assay system might bestandardization before it can be used as a broad-based screening tool.

日本의 人文·社會科學 硏究動向 調査

李注衡,朴仁熙,韓點洙,金文基,朴晋泰 慶北大學校 1983 論文集 Vol.36 No.-

In January 1983, the writer visited a few universites in Japan to survey the recent trend of studies in cultural and social Sciences. At that time what I researched is as follows; In Japan, many a learned society has been organized and the research activities were very lively. Mass publication of scientific periodicals and prompt translation of foreign writings showed the maturity of scientific atmosphere. It true that their study of literature has been performed on the basis of positivism since 1930'. But now Structuralism which consider's literary works as one organic unity of parts became the main basis of literary studies. And, Learned Society of Educational Law has been organized in Japan. In consequence, the level of researches in educational law could be remarkably high. So, it is necessary for us to study the law of education. For, to make it better, we must know not only the universal principles of education but also specific ones derived from the peculiar characteristics of Korean education. At the same time, in Japan, Department of the Law of Industrial Administration was established in 14 universities including Japan University. And with the help of it, companies could improve the efficiency in dealing with judicial affairs related with industrial administration. So, to be a winner in the international trade competition, it is also required for us to study the judicial affairs of industrial administration.