• 한국농공학회:학술대회논문집
• /
• 한국농공학회 2001년도 학술발표회 발표논문집
• /
• pp.340-343
• /
• 2001

The main objective of this study is to simulate design flood discharge of the Sungjoo basin. GIS and HEC-HMS were used in this study. GIS technique can extract various hydrological factors from D.E.M(Digital Elevation Model) and the parameters extracted from each watershed were applied to the HEC-HMS. As a result of this study, GIS technique is useful to tile extraction of watershed characteristics factors and HEC-HMS is successful in tile simulation of design flood discharge.

• Fibers and Polymers
• /
• 제7권1호
• /
• pp.57-61
• /
• 2006

A study has been made on the quantification and evaluation of fabric pilling using two-dimensional and three-dimensional hybrid imaging methods. Two-dimensional imaging method was good for some samples while three-dimensional measurement method for others, according to the properties of their base fabric. Various image processing techniques as well as three-dimensional data processing algorithms were applied for the extraction of pills from measured data and a series of shape parameters have been defined for the objective evaluation of fabric pilling. An evaluation criterion that is compatible with the conventional evaluation method has been proposed by applying the new evaluation method to the current photographic standards.

• 한국식품조리과학회지
• /
• 제28권6호
• /
• pp.655-663
• /
• 2012

This study was carried out response surface analysis for brown sauce optimization. Three factors of heating time (10, 20, 30, 40, and 50 min), the added gelatin content (0, 4, 8, 12, and 16%) and the added tomato paste amount (0, 6, 12, 18, and 24%) were encoded into 5 levels (-2, -1, 0, 1, 2). After the central synthesis plan was set up to produce samples in 16 pre-arranged conditions and the sensory tests were conducted, the investigation on optimum level of these factors was conducted. The scope of optimum conditions for extraction was established through reading the range of reaction surfaces superimposed between those representing sensory properties such as color, flavor, taste, viscosity and overall acceptability was established. In this study, it was found out that the scope of optimum conditions for brown sauce extraction was 30 min for heating time, 9.00% for gelatin content and 11.25% for tomato paste amount. The reliability test proved the mentioned scope to have a similar value to that of the estimated scope when compared to the experimental values which was observed through experiments conducted under the same conditions as applied to values predicted through RSM program, enabling the verification of the reliability of derived regression formula.

• 분석과학
• /
• 제17권6호
• /
• pp.476-480
• /
• 2004

A simple, rapid, reproducible and selective UV-Visible spectrophotometric method has been developed for determination of germanium in a week acid medium (pH = 3.0) in the presence of mandelic acid (MA) and malachite green (MG). A single extraction in chlorobenzene was used for the analysis. The germanium-MA ion association complex exhibits an absorption maximum at ${\lambda}_{max}=618nm$ with MG as counter ion and has an apparent molar absorptivtity of $1.313{\times}10^5L\;mol^{-1}\;cm^{-1}$. The values obtained by this UV-Visible spectrophotometric method are in good agreement with the values from inductively coupled plasma-mass spectrometer analysis.

• 분석과학
• /
• 제12권5호
• /
• pp.370-374
• /
• 1999

추출 크로마토그래피를 이용하여 고순도 테르븀의 선택적 분리를 시도하였다. 고정상으로 2-ethylhexyl-2-ethylhexyl phosphonic acid(HEH[EHP]) 추출수지(-100~+150 mesh), 컬럼은 ${\Phi}20{\times}530mm$를 사용하고 온도는 $50^{\circ}C$로 유지하고, 흡착 유속은 $0.2mL/cm^2{\cdot}min$, 용출유속은 $1.0mL/cm^2{\cdot}min$, 컬럼의 높이와 직경의 비는 1:15로 하였다. 용리액의 산도, 시료의 부하량 및 시료의 조성을 변화시켜 테르븀의 분리의 최적조건을 설정하였다. 그 결과, 산도는 0.6 N HCl, 부하량은 약 5%, 시료의 조성은 $Gd_2O_3(20%)+Tb_4O_7(60%)+Dy_2O_3(20%)$이었다. 그리고, ICP-AES로 테르븀의 분리수율을 구한 결과 99.99% 이었고 순도는 99.98%이었다.

• 분석과학
• /
• 제8권1호
• /
• pp.33-40
• /
• 1995

미량의 hydroxide 이온은 Tetra-n-Butyl Ammonium(TBAC)에 의해 수액상에서 유기상으로 추출될 수 있다. 일차 알코올류, 특히 다이올류의 적은 양을 첨가하면 상전이 촉매계의 거동이 급격히 변하고 과량의 염기를 유기상에서 발견할 수 있다. 정량 측정은 유기상에서 1차, 2차 알콕사이드와 다이올 음이온들의 추출한 양에 대해 행하였다. 한편, 일차 알코올류와 벤질 알코올의 추출에 대한 선택상수들은 수액상과 유기상에서 $Q^+RO^-$($Q^+$ : quaternary 양이온, $RO^-$ : 알콕사이드 이온)와 $Q^+Cl^-$과 같은 이온쌍들의 평형상수와 이 두 상간의 분배계수로 분리되었다. 따라서 $Q^+RO^-$의 선택성에 대한 전제 특성을 본 연구결과에서 언급된 여러 상수들에 대하여 자유에너지에 상응하는 값들을 사용해서 더욱 상세하게 논하였다.

• Childhood Kidney Diseases
• /
• 제28권2호
• /
• pp.80-85
• /
• 2024

Lupus anticoagulant hypoprothrombinemia syndrome (LAHPS) is a rare entity characterized by the presence of lupus anticoagulant (LA) and prothrombin (factor II) deficiency. It may cause severe bleeding contrary to classical antiphospholipid syndrome. Here, we report a case of LAHPS presenting with a hemorrhagic ovarian cyst in a 17-year-old girl with systemic lupus erythematosus (SLE) nephritis. She had been followed up for 8 years. Her first manifestation of SLE was prolonged gingival bleeding after tooth extraction at 9 years of age. During the follow-up period, she had neither severe bleeding nor thrombotic complications despite a positive LA and a prolonged activated partial thromboplastin time (aPTT). At this visit, the patient presented with colicky abdominal pain, a hemorrhagic ovarian cyst, a prolonged prothrombin time, a prolonged aPTT, a low factor II level, and a positive LA, leading to the diagnosis of LAHPS. While a hemorrhagic ovarian cyst resolved completely in 3 months, she received oral pill, transfusions of red blood cells and plasma, and intravenous cyclophosphamide pulse therapy in combination with glucocorticoids due to persistent menorrhagia, anemia, prolonged aPTT, and lupus flaring. Thus, LAHPS needs to be considered in SLE patients with positive LA and prolonged aPTT.

• Journal of Yeungnam Medical Science
• /
• 제4권1호
• /
• pp.43-47
• /
• 1987

7 cases of Acute Gastric Anisakiasis have been reviewed at the Department of Internal Medicine. Yeungnam University Hospital from March, 1983 to December 1986. 1. Of 7 cases, the ratio of male and female was 3:4 and the age 30s occupied most (5 cases) the 50s' followed (2 cases). 2. Chief complains were in order of epigastric pain (6 cases), vomiting (3 cases), Nause (2 cases), Ulticaria (1 case) & epigastric fulling sensation (1 case). 3. In all 7 cases, the causative fish is Astroconcer myriaster. 4. The onset of symptoms was observed within 5 to 7 hours after eating the causative raw fish. 5. Gastrofiberscopic exam was undergo within 18 hours since onset of symptoms. 6. The gastrofiberscopic findings were gastric mucosal edema and redness in all 7 cases. One case also had mucosal erosion. The involved sites of the stomach were in frequency of order, the body (5 cases), the antrum (2 cases). 7. The symptoms of the patients relieved spontaneously without medical treatment after the extraction of the larva with biopsy forcep during gastrofiberscopy. 8. In Korea, many people take raw fish and there may be many patients of Anisakiasis so if much concern and careful observation are paid to whom, with severe cramping epigastric pain after taking of raw marine fish in about 10 hours, we could find out and confirm more patients suffering from Anisakiasis by immediate endoscopic gastrofiberscopy.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제30권3호
• /
• pp.186-192
• /
• 2004

Purpose: Human tooth proteins are highly heterogeneous, comprising diverse proteins derived from a number of genes. The attempts to identify protein for activity of tooth matrix proteins have been defied by several factors. First, the amount of proteins within teeth is very small relative to many extracellular matrix proteins of other tissues. Second, the bioassay system is tedious and needed for long time. Therefore we tried to find easy techniques, which increase the product rate, and an assay of small proteins, with which amino acid sequence is possible without additional procedures. Materials and Methods: Total protein were extracted from 300 g enamel removed teeth and 600 g teeth with 4 mol/L guanidine HCl and purified by gel chromatography. Aliquot of proteins was implanted into muscle pouches in Sprague-Dawley rats for bioassay. By SDS-PAGE and membrane blotting, molecular weight of each protein was estimated and a partial amino acid sequence was obtained. Each fraction blotted on the membrane was cut out and inserted in rat ectopic model. Results: In dissociative method, total tooth proteins were obtained 1mg/ml from enamel removed teeth and 3.5 mg/ml from teeth. In SDS-PAGE, four clear bands at the sites corresponding to 66, 40, 20 and 18 kD. Especially The 66 kD band was clearly exhibited. Amino acid sequencing from tooth could be possible using PVDF membrane blotting technique. In amino acid sequencing, 66 kD protein was identified as albumin. Conclusion: Compared with conventional method for extraction of teeth protein and bioassay of proteins, the methods in this study were easy, time-saving and more productive technique. The matured tooth proteins omitting additional procedure of mechanical removal of enamel were simply analyzed using blotted PVDF membrane. This method seems to make a contribution as a technique for bioassay and amino acid sequencing of protein.

• 대한구순구개열학회지
• /
• 제4권1호
• /
• pp.1-11
• /
• 2001

Disposable blade is widely used for palatal and oral mucosal incision in oral and maxillofadal surgery nowadays, But its design and durability need for improvement, Especially, there are so many hard tissues intraoral area, such as bone and tooth, therefor the sharpness of the surgical blade was easily destroyed, The purpose of this study was to make basic data for developing new design of surgical blade using in oral and maxillofacial area including for the patients who have cleft lip and palate deformities, Some questionnaires about the usefulness of currently used surgical blades were sent to 150 dentists, the 54 of them made a reply, Secondly, The used-once blade and fresh new blade were examined under the scanning electron microscope with the 4000-times magnification, Lastly, the tissue reaction following the surgical incision with a fresh-new and a used blade on rat buccal cheek mucosa and hard palate was evaluated with light microscope with hematoxilin-eosin staining, The time interval from the surgical trauma to taking a sample were 1 day, 3 days, 7 days, and 14 days, At each time schedule, 2 Sprague-Dawley rats were sacrificed, Many dentists were agreed to need for changing the design of the surgical blades and also demand to improve the durability of the blades, They were also eager to adopt the new design of blade if it was available, The blade used in surgical extraction procedure was heavily damaged in its sharpe edge of number 15 blade, The histological differences were not prominent, but the delayed healing was detected in buccal mucosal defects especially in the surgical group with used blade, There are slight different changes in hard palatal defects between a used and a new blade group, In this study, we could find that there are imperative demanding on improvement of surgical blade design and durability for oral and maxillofadal area, The blade currently using in surgical extraction was easily damaged, The animal model of this study was not perfect for the purpose of this study.