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소유려,백병주,김재곤,양연미,김하나 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.3
생수 내에는 많은 미네랄이 포함하고 있으며, 이 중 칼슘, 나트륨, 칼륨, 마그네슘, 불소는 생수통에 반드시 표기해야 할 무기물이다. 칼슘, 마그네슘, 불소와 같은 무기물은 치아형성에 관여하며, 적절하게 섭취시 치아우식증을 예방할 수 있다. 현행 먹는 샘물 수질기준에 따르면 무해무기물질인 칼슘과 마그네슘에 대한 기준치는 없으며, 유해무기물질인 불소와 같은 무기물은 2 mgF/L 이하로 규정하고 있다. 본 연구는 국내에서 판매되고 있는 생수 15종을 대상으로 칼슘, 마그네슘, 불소의 농도를 측정하였고, 생수 내 무기물 함량의 표기 여부 및 무기물 농도를 비교, 검토하여 다음과 같은 결론을 얻었다. 1. 15개의 생수 중 1개의 생수를 제외하고 모두 칼슘함량을 표기하였다. 평균 칼슘농도는 34.68±31.84 mg/L, 최대 12.891±1.85 mg/L, 최소 2.0±0.02 mg/L이었다. 2. 15개의 생수 중 2개의 생수를 제외하고 모두 마그네슘 함량을 표기하였다. 평균 마그네슘 농도는 9.22±11.06 mg/L, 최대 30.43±0.75 mg/L, 최소 0.0 mg/L이었다. 3. 15개의 생수 중 4개의 생수를 제외하고 모두 불소 함량을 표기하였다. 평균 불소 농도는 0.25±0.33 mg/L, 최대 1.13±0.04 mg/L, 최소 0.01±0.03 mg/L이었다. 모두 생수는 현행 먹는 샘물 기준치인 2 mgF/L 이하에는 만족시켰다. Drinking water has lots of minerals, especially calcium, sodium, kalium, magnesium, and fluoride must be labelled on the bottle about their contents. Minerals like calcium, magnesium, and fluoride have influence to the tooth development. Appropriately taking some minerals, dental caries can be prevented somewhat degree. There is no guide line about innoxious minerals like calcium and magnesium, however, noxious mineral like fluoride, should be contained less than 2 mgF/L according to the current drinking water standard. Hereupon, it is necessary to recognize the concentration of fluoride in drinking water, so I studied 15 samples of domestic drinking water on sale about the concentration of calcium and magnesium, fluoride. The results obtained were as follows ; 1. 14 drinking waters in 15 samples showed various Ca concentration. The average Ca concentration is 34.68±31.84 mg/L. the highest is 128.91±1.85 mg/L and the lowest is 2.0±0.02 mg/L. 2. 13 drinking waters in 15 samples indicate the Mg concentration. The average concentration is 9.22±11.06 mg/L. the highest is 30.43±0.75 mg/L and the lowest is 0.0 mg/L. 3. 11 drinking waters in 15 samples indicate the F concentration. The average concentration is 0.25±0.33 mg/L, the highest is 1.13±0.04 mg/L and the lowest is 0.01±0.03 mg/L. All samples are satisfied the current drinking water standard, 2 mg F/L.
전하라,양홍서 전남대학교 치과대학 1998 전남치대논문집 Vol.10 No.1
The purpose of this study is to determine the fracture resistance of acrylic resins with the reinforcement of various strengtheners. Four strengtheners were used in this study. A heat-curing resin(H) and a self-curing resin(S) were tested separately. First, they were tested without the strengtheners. They will be called H1, S1 group. The second test samples (H2, S2) included mesh. The third test samples (H3, S3) used one wire as a strengthener. The fourth test samples (H4, S4) used two wires. Finally, the fifth test samples(H5, S5) used polyethylene fiber as a strengthener. Each group consisted of 15 pieces. There were 150 pieces in total. Each test sample was 40×13×3mm. Each piece was immersed in mineral water for 2 days at 37℃. Each sample was then tested and measured for strength in a fracture test(3-point bending test), with a Universal testing machine. The Results were as follows : 1. The heat curing resin without the strengthener was stronger than the wire, mesh, and polyethylene fiber strengtheners. 2. All the strengtheners increased the strength of the self-curing resin. 3. The self-curing resin with polyethylene fiber and with wire strengtheners were more efficient than with mesh strengthener. The test results for heat-curing resins showed that strengtheners were not needed. But for self-curing resins, strengtheners were needed for getting better transverse strength efficiency.
전자렌지 조립작업자에서 발생한 경견완증후군의 조사 연구(Ⅱ) : 진찰 및 검사소견을 중심으로 A Review on the Findings of the Examinations
박종,김양옥,류소연,하상호,박병권 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.2
경견완증후군 소견자가 발생한 모 전자렌지 조립 작업장의 작업자 313명 중 설문조사에서 경견완 부위에 증상을 호소하는 137명(43.8%)에 대하여 건강진단을 실시하여 그 결과를 요약하면 다음과 같다. 1. 건강진단의 주요 소견 양성율은 자발통이 94.9%, 운동통이 62.0%, 근압통이 78.1%, X-선 촬영이상 54.7%, Morley검사 28.5%등이었다. 2. 남자에서 목부위의 근압통의 정도는 좌·우 악력과 음의 상관을 보였으며, 팔꿈치 부위의 근압통은 잔업량이 많을수록 증가하는 경향을 보였다. 여자에서는 목부위의 근압통의 정도는 좌·우 악력과 음의 상관을, 잔업량과는 양의 상관을 보였으며, 신장이 적을수록 손목부위의 압통을 심하게 호소하였다(p<0.05). 3. 근경결은 여성에서, 근무기간이 증가할수록 유의하게 증가하는 경향을 보였다.(p<0.01). 4. 건강진단 결과와 자각증상과의 연관성을 분석한 결과 X-선 촬영 이상여부는 목과 어깨의 통증, 다리의 피곤감과 관련이 있었다. 근경결 여부는 손, 손목, 손가락의 저림 증상과 유의한 관련이 있었고, Morley 검사는 손목과 손의 불편감, 등의 불편감이나 통증 등의 증상과 유의한 관련이 있었다. 목 부위의 근압통은 목과 어깨의 통증 그리고 손목, 손, 손가락의 저림 등과 유의한 관련이 있었으며 어깨 부위의 근압통은 목과 어깨의 통증, 전신 피로 증상과 유의한 관련이 있었다.(p<0.05). 5. 근압통이 있는 군에서 없는 군에 비해 일상 생활 도중에 겪는 고통 중 상지 부위의 고통 호소수가 유의하게 많았으며(p<0.05), 근전도 검사에서 양성인 경우 음성에 비해 신경정신계통에 나타나는 고통 호소수가 유의하게 많았다.(p<0.05). 결론적으로 경견완장해의 등급과 병형 진단에 있어서 자각증상과 건강진단 결과와는 밀접한 연관성이 있었으며, 근경결, 근압통, X-선 촬영 그리고 Morley 검사 등이 유용할 것으로 생각된다. 따라서 자각증상의 주관적인 요소를 가능한 한 배제할 수 있도록 자각증상을 객관화하는 노력과 방법들의 개발이 필요할 것으로 생각한다. To find the severity and the type of the cervicobrachial syndrome, through physical examinations and laboratory tests were made toward 137 patients complaining the cervicobrachial syndrome(CBS) through the health interview among 313 workers occupied in a microwave-oven assembling factory from December 1993 to February 1994. Results were as follows. 1. The prevalence of spontaneous pain was 94.9%, while 78.1% suffered from muscle tenderness, 63.5% suffered from muscle induration and 62.0% showed kinesalgia. 54.7% of patients showed positive cervical X-ray findings and 28.5% showed positive Morley test. 2. The muscle induration was associated with the total duration of the job among female workers. 3. The severity of neck tenderness was negatively correlated with the strength of the grip at both hands, positively correlated with the duration of overtime in male and the severity of the wrist tenderness was negatively correlated with the height in female. 4. X-ray findings, muscle induration. Morley test results, muscle tenderness on the neck and muscle tenderness on the shoulder were associated with subjective symptoms of the workers. 5. The muscle tenderness was associated with the number of the complaints at upper extremities among the sufferings in daily life significantly and the electromyogram(EMG) finding was associated with the number of the complaints about neuropsychological system among the sufferings in daily life significantly. In conclusion, the results of the physical examination were related with the subjective symptoms of the cervicobrachial syndrome. The muscle induration, the muscle tenderness, cervical X-ray findings and the Morley test results were more useful for the diagnosis of CBS. More efforts to objectify the subjective symptoms were asked.
F2211-04 생체조직공학적 의료제품(TEMPs)에 대한 표준 분류
소정원 ( Jung Won So ),김순희 ( Soon Hee Kim ),백미옥 ( Mi Ock Baek ),노혜원 ( Hye Won Roh ),이나리 ( Na Ri Lee ),유규하 ( Gyu Ha Ryu ),조양하 ( Yang Ha Cho ),이승진 ( Seung Jin Lee ),강길선 ( Gil Son Khang ) 한국조직공학과 재생의학회 2008 조직공학과 재생의학 Vol.5 No.1
Tissue engineered medical products (TEMPs) are those protocols and products developed for use in the human body as biological substitutes to restore, maintain, or improve tissue function. So TEMPs may achieve a therapeutic potential from cells, biomolecules, scaffolds, and other materials, and processed tissue and derivatives used in various combinations or alone. Since interactions may occur among the components used in TEMPs, new standard descriptions, test methods, and practices are needed to aid the evaluation of these interactions. Therefore this technical report the aspects of tissue engineered medical that will be developed as standards.
( So-jin Yang ),( Jin-a Ko ),( Hae-soo Kim ),( Min-ho Jo ),( Ha-nul Lee ),( Bo-ram Park ),( Young-min Kim ) 한국미생물 · 생명공학회 2018 Journal of microbiology and biotechnology Vol.28 No.12
Cycloisomaltooligosaccharide glucanotransferase (CITase) was isolated from alkaliphilic Paenibacillus daejeonensis via an amino acid homology search for the reported CITase. The recombinant alkaliphilic CITase (PDCITase) from P. daejeonensis was expressed in an Escherichia coli expression system and purified as a single protein band of 111 kDa. PDCITase showed optimum activity at pH 8.0 and retained 100% of activity within a broad pH range (7.0-11.5) after 18 h, indicating alkaliphilic or alkalistable CITase properties. In addition, PDCITase produced CI-7 to CI-17, CI-18, and CI-19, which are relatively large cycloisomaltooligosaccharides yet to be reported. Therefore, these large cycloisomaltooligosaccharides can be applied to the improvement of water solubility of pharmaceutical biomaterials.
( So Yeon Kim ),( Yong Jun An ),( Soo Hwan Kim ),( Ha Kyoung Kim ),( Jeong Soo Park ),( Yang Sik Shin ) 대한마취과학회 2011 Korean Journal of Anesthesiology Vol.60 No.2
Background: Bilateral total knee arthroplasty is generally accompanied by a significant amount of blood loss. We investigated the relationship between the intensity of pain and the amount of blood loss in the early postoperative period after bilateral total knee arthroplasty. Methods: A prospective study was conducted on 91 patients who underwent elective sequential bilateral total knee arthroplasty for osteoarthritis. All patients received combined spinal and epidural anesthesia. Patients were divided into three groups based on their scores on the verbal numerical rating scale (VNRS) for pain at 6 hours postoperatively. The VNRS was classified as follows; mild pain (n=34, VNRS score 0-4), moderate pain (n=24, VNRS score 5-6), and severe pain (n=33, VNRS score 7-10). We compared the mean arterial pressures and the amount of blood loss during the first 24 postoperative hours in the three groups. Factors influencing postoperative blood loss were analyzed. Results: Postoperative mean arterial pressures and blood loss were not different among the groups. Of the factors examined, the amount of postoperative blood loss was only dependent on the amount of intraoperative blood loss (P=0.001). Conclusions: Early postoperative pain has no effect on postoperative blood pressure and the amount of blood loss after bilateral total knee arthroplasty. For postoperative blood loss, intraoperative blood loss is the main determinant. (Korean J Anesthesiol 2011; 60: 98-102)