http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개별검색 DB통합검색이 안되는 DB는 DB아이콘을 클릭하여 이용하실 수 있습니다.
통계정보 및 조사
예술 / 패션
<해외전자자료 이용권한 안내>
- 이용 대상 : RISS의 모든 해외전자자료는 교수, 강사, 대학(원)생, 연구원, 대학직원에 한하여(로그인 필수) 이용 가능
- 구독대학 소속 이용자: RISS 해외전자자료 통합검색 및 등록된 대학IP 대역 내에서 24시간 무료 이용
- 미구독대학 소속 이용자: RISS 해외전자자료 통합검색을 통한 오후 4시~익일 오전 9시 무료 이용
※ 단, EBSCO ASC/BSC(오후 5시~익일 오전 9시 무료 이용)
In this paper we have investigated the optimum conditions (pH, temperature, adsorption time, etc.) for removal of the some heavy metal ions(Ni^+2, Cu^+2, Co^+2, Cd^+2, and Zn^+2) from waste water by the activated carbon which is treated with 8-hydroxyquino line(oxine). By this method the amount of removal for each metal ions is 7―20㎎ per 1g of the activated carbon at pH 5, room temperature, and 15―20hrs of absorption time. It is also found that the rate determining steps of the adsorption process are a film diffusion and a intraparticle diffusion. It is proved that this method provides a considerable enhancement for the elimination of the heavy metal ions from waste water.
Neopterin, a pyrazinopyrimidine derivative, is the first intermediate of the biopterin biosynthetic pathway which is an essential cofactor in neurotransmitter synthesis. In vitro, neopterin is excreted by monocytemacrophage after induction by supernatant from activated T-lymphocytes or by γ-interferon. In vivo, increased neopterin was demonstrated in patients with viral, bacterial infection, autoimmune disease, malignancy, celluar graft rejection in transplantation, and AIDS. Therefore, increased neopterin indicates a state of activated cellular immunity. Urinary excertion levels of neopterin were determined in 3esophageal, 23gastric, 2 duodenal, 9pancreatic, 25 hepatocelluar, 12 cholangio, 7colonic carcinomas, and 30normal controls. The mean values of urinary neopterin were 1321.2±120S.97 (range: 92.7-5030.9u mol/mol creatinine) in patients but 139.8×67.2 (range: 67.2±193.5)u mol/mol creatinine in the controls. Urinary neopterin excretion increased significantly in esophageal (1641.5±1870.3u mol/mol crestinine), gastric (1105.2±1083.4u mol/mol creatinine), duodenal (287.0±43.4u mol/mol creatinine), pacreatic (1095.5±842.8u mol/mol creatinine), hepatocellular (1788.9±272.9u mol/mol creatinine), cholangio (1530.9±1748.7u mol/mol creatinine), colonic carcinoma (855.4±695.7u mol/mol creatinine) than those normal controls. Urinary neopterin excretion appeared to be increased tendency by the advanced stage of gastric cancer. Urinary neopterin excretion level in patients with hepatocelluar carcinoma was correlated positively with tumor size (r=0.569, p$lt;0.05). From these results, it may by suggested that urinary excretion level reflects both the clinical status of the patient and tumor size, and is useful observing clinical course and judging effects of the treatment.
아연전해조에서 채취한 망간스라임에는 MnO₂가 59.94% 함유되어 있었다. 이 망간스라임을 물로 씻기, 환원배소, 용해추출, 용출액중의 불순물 제거 및 전해석출의 과정을 거쳐서 전해이산화망간을 합성하였다. 또한 X-선 회절분석에 의해 본 실험에서 합성된 MnO₂는 전지활성이 우수한 γ형임을 알았다. Manganese slimes which were formed in the zinc refinery elecarolytic cells contained 59.94% of MnO₂. The recovery process of MnO₂ from the slimes consisted of five steps, i.e., washing the slimes with water, roasting, dissolution of manganese, removal of impurities, and electrolytic synthesis of MnO₂. By X -ray diffraction method it was proved that the recovered MnO₂ had γ-typed crystalline structure.
Fifty-three years old Korean male, who was heavy alcoholic, visited to our hospital with complaints of general weakness, dull mentallity, polyuria, polydipsia and blurred vision. There were dark skin discoloration on whole skin surface especially on face and exposed area. Serum iron levels were elevated (183-243㎍/㎗) and T. Ⅰ. B. C. were within normal limit (300~342㎍/㎗). Diabetes and liver cirrhosis with hepatic coma were diagnosed by following laboratory findings: Blood sugar levels were 175㎎%, 272㎎%, 306㎎% and 378㎎% at fasting and 30 minutes, 60 minutes, 1 hour, 2 hours after glucose load respectively. Total protein was 6.3g%, albumin 3.4g%, globulin 2. 9g%, alkaline phosphatase 6.0 units, total bilirubin 2.5㎎% and blood ammonia 260㎍%.
Ambidentate 리간드인 isonitrosobenzoylacetone imine 및 그 N-알킬치환체들의 새로운 니켈(II)착물 Ni(IBA-NH)(IBA-NR)를 합성하였다. 여기서 IBA-NH 및 IBA-NR (R=H, methyl, ethyl, n-propyl, iso-propyl, n-butyl 또는 benzyl)은 각각 isonitrosobenzoylacetone imine 및 그 N-알킬치환체를 표시한다. 합성한 니켈(II)착물들의 적외선, 핵자기공명, 전자스펙트라 및 자기모멘트등을 측정한 결과 이들 착물에서 IBA-NH 리간드는 이소니트로소기의 산소를 통하여 니켈에 배위되어 6각형 고리를 이루고 있으며, 그리고 IBA-NR 리간드는 이소니트로소기의 질소를 통하여 니켈에 배위되어 5각형 고리를 이루고 있음을 확인하였다. 이들 리간드의 배위 구조는 Bose 등에 의해 알려진 isonitrosoacetylacetone imine 및 N-알킬유도체들의 구조와 유사하다. Novel nickel(II) complexes of the type Ni(IBA-NH)(IBA-NR), where IBA-NH and IBA-NR (R=H, methyl, ethyl, n-propyl, iso-propyl, n-butyl or benzyl) represent isonitrosobenzoylacetone imine and its N-alkyl derivative respectively, have been prepared. The ir, nmr, and electronic spectra and magnetic moment of the nickel(II) complexes have been studied. It has been determined that the isonitroso group of IBA-NH coordinates to nickel through the oxygen to form 6-membered chelate ring and that of IBA-NR coordinates to nickel through the nitrogen to form 5-membered ring in square-planar Ni(IBA-NH) (IBA-NR). The coordination manner of the ligands is similar to that of isonitrosoacetylacetone imines obtained by Bose, et al.
Membranoproliferative glomerulonephritis (MPGN) with dense intramembranous deposits, so-called type II MPGN, is a subtype of idiopathic MPGN, and was described as a separate entity by Berger and Galle in 1963. It frequently occurs in older children and young adults and the clinical course is variable, but is generally progressive. The presenting feature is nephrotic syndrome in many patients, and proteinuria and hematuria are also seen frequently. Recently we experienced a case of type II MPGN which was proven by renal biopsy. A 14-year-old school boy was admitted to this hospital because of generatlized edema and hematuria which developed three weeks after an upper respiratory infection. The histopathologic findings showed a thickened capillary basement membrane with a tram-track appearance and epithelial crescent formation on light microscopy, and a characteristic rihbon-like appearance of the glomerular basement membrame with electron-dense deposits on electron microscopy. The patient received triple drug therapy including corticosteroid, dipyridamole and cyclophosphamide without improvement.
Collagenous colitis was first deacribed by Lindstrom(1976). This disorder is now a recognized disease of colon associated with chronic watery diarrhea which shows the typical histologic findings of a thickened subepithelial collagenous band. A few cases with such disease has been reported in this country. We have recently observed a 52-year-old businessman with chronic watery diarrhea without abdominal and intermittent mucobloody stool for several years. He has lost about 4 kg of his body weight for these 6 months period. Physical examination, laboratory and radiological studis were unremarkable. Colonoscopy disclosed no gross abnormalities through the entire colon including the terminal ileum but found the pronounced thiekening(about 10um) of intercryptal subepithelial collagen and chronic inflammation in the lamina propria in the histologic examination.
Novel nickel(Ⅱ) and palladium(Ⅱ) complexes, Ni(IAA)_2-pn PdCl(IAA)-pn, where (IAA)_2-pn and (IAA)-pn represent N,N'-propylenebis(isonitroacetylacetone imine) and N-(2-aminopropyl)isonitrosoacetylacetone imine respectively, have been prepared. The nickel(Ⅱ) and palladium(Ⅱ) complexes were characterized on the bases of elemental analysis, IR, NMR, and electronic spectra. The reaction of nickel(Ⅱ) and isonitrosoacetylacetone(H-IAA) with propylenediamine gives an (IAA)_2-en type complex, while similar recation using palladium(Ⅱ) instead of nickel(Ⅱ) gives an (IAA)-pn type complex.