방역작업자의 브롬화메틸(methyl bromide) 노출수준과 생물학적 모니터링

이종성,이용학,신재훈,최정근,오차재,정호근 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.3

This study was performed to estimate environmental and biological monitoring of worker exposed to methyl bromide through quarantine fumigation. Airborne methyl bromide and it's metabolites were analyzed by gas chromatography and ion chromatography, respectively. The results are as followings; airborne concentration of methyl bromide(TWA) was 2.08±1.56 ppm(N=8). Dispersion and setting/degas groups were 0.67±0.12 ppm(N=2) and 2.54±1.53ppm(N=6), respectively. Bromide ion concentration in serum was 23.40±14.91㎎/ℓ(N=10) in the exposed workers and 4.74±0.82㎎/ℓ(N=21) in the non-exposed workers. Bromide ion concentration in urine was 35.56±26.89㎎/ℓ(N=11) in exposed group and 6.62±2.31㎎/ℓ(N=21) in non-exposed group. Good correlation was observed between concentration of serum and urine(r^2=0.890 p<0.01). No significant correlations of other determinanats were observed. Calcuated from a regressive curve. the biological half lifes of serum and urine were 10.7 and 5.9 days. In these results, biological monitoring of bromide ion of serum and urine provided useful information for evaluating exposure of workers to methyl bromide, so that an availability of bromide ion of biological samples was showed as biological monitoring indices for methyl bromide.

벼 자동화 육묘시설에서 적정 파종기와 묘대기간의 선정

鄭錫祚,孫再根 慶北大學校 農業科學技術硏究所 2005 慶北大農學誌 Vol.23 No.-

The purpose of this study was carried out to determine the optimum sowing date and days after sowing (DAS) in automatic facility located at Uiseong of Gyeoungbuk province. The seedling height was rapidly increased with a delay of sowing time from April to May. The 10-day old seedlings with suitable plant height(>10cm) for machine transplanting in the facility were obtained when the seeds sowed after May 20 at Uiseong in Gyeoungbuk province. The dry weight-height ratio of 10-day old seedlings was significantly decreased when the seeds sowed after June 20, and 15-days old seedlings did after May 10. No. of panicles/hill was reduced with increasing of days after seeding. But there were no significant difference among other yield components such as no. of grains/panicle, ratio of ripened grains, and 1,000 grain weight. The highest grain yield, 748kg/10a, was attained from the 10-day old seedlings transplanted at May 27 in comparision with those of 15-day and 20-day old seedlings. The grain yield of 10-day old seedlings transplanted at June 26 was also higher than that of 15-day old seedlings.

정신분열병 환자의 분노 경험과 표현

정호성,송지영,정근재 대한신경정신의학회 2000 신경정신의학 Vol.39 No.6

연구목적 : 정신질환자에 대한 편견은 이들에 대한 치료에 큰 영향을 미치고, 이들이 사회 적응과 재활에 어려움을 겪는 요인이 된다. 저자는 정신분열병 환자들이 느끼는 분노의 특징과 표현이 일반인에 비해 과연 크고 광범위한 것인지에 대하여 알아보고, 나아가서 이들 환자에 대한 편견을 시정할 수 있는 근거를 얻고자 하였다. 방 법 : DSM-IV에 의거한 정신분열병 환자 105명과 대조군으로 대학병원 내과에 입원한 환자 43명, 그리고 건강한 성인 65명을 대상으로 한국판 State-Trait Anger Expression Inventory를 이용한 분노의 경험과 표현을 조사하여 정신분열병 환자군의 분노의 특성을 비교 분석하였다. 결 과 : 정신분열병 환자군이 건강대조군보다 상태 분노가 유의하게 높았고, 특성-기질은 다른 두 군에 비해 유의하게 낮았다. 분노 표현 척도 중에 분노 억제와 분노 통제는 건강대조군에 비해 정신분열병군에서 유의하게 낮았다, 그러나 특성-반응과 분노-표출은 유의한 차이가 없었다. 그리고 병식 유무에 따라 세 군간에 분노 척도를 비교해 본 바 모든 척도에서 유의한 차이를 보이지 않았다. 결 론 : 정신분열병 환자들은 정상대조군에 비교해 볼 때 상당한 분노를 가지고 있고, 분노 억제와 조절 능력은 부족한 점을 보여주고 있다. 그러나 분노의 표출은 크지않다고 할 수 있다. 이러한 결과는 정신분열병 증상의 하나인 자아기능의 약화일 수도 있으나 만성화에 따른 음성증상에 의한 것일 수도 있다. 이들의 예기치 않는 적대적 행동이나 난폭한 행동은 급성기가 아닌 시기에는 주위 환경에서 비롯된 자극에 따른 반응일 수 있다. 그러므로 정신분열병 환자는 무조건 위험하다는 잘못된 견해는 시정되어야 할 것이다. 그리고 향후 정신분열병 환자가 갖는 분노의 특성으로 파악하는 것은 예기치 않는 이들의 분노 표현에 대처하는 방법을 찾는데 도움이 될 수 있을 것이다. Objectives : The prejudice against mentally deranged persons has an effect on the treatment of the mental illness and is one of the reasons shy they have difficulties in social adaptation and rehabilitation. We intended to examine the characteristics and expression of the anger in schizophrenic patients to find how much anger they feel compared with general population. And we tried to find the basis on which the prejudice can be corrected. Method : 105 schizophrenic patients were selected according to DSM-IV. Control groups were 43 patients who were admitted to the department of internal medicine in university hospital and 65 healthy adults. The experiences and expressive patterns of anger were surveyed by State-Trait Anger Expression Inventory, Korean edition. And the characteristics of the anger in the schizophrenic patients were compared with those in controls and analyzed. Results : State-anger was significantly higher in the schizophrenic patients group than in healthy control group and trait-temperament was significantly lower in schizophrenic patients group than in other two control groups. Among the anger expression scales, anger-in and anger-control were significantly lower in schizophrenic patients group than in healthy control group. But trait-reaction and anger-out showed no significant difference among three groups. And no significant difference was shown among the anger scales of three groups according to the presence of insight of the disorder. Conclusion : It is shown that schizophrenic patients have considerable much anger when compared to healthy control group and insufficient ability to suppress and control the anger. But it may be said that the expressions of anger in schizophrenic patients are not apparent. These results may be due to either the weakness of ego function, which is one of the symptoms of schizophrenia, or negative symptoms following chronicity of the disorder. Unexpected aggressiveness or violence of them may be triggered by stimuli from the circumstances, if they are not in acute phase. And the misunderstanding of general public that schizophrenic patients are dangerous unconditionally should be corrected by the education. We can't develop the appropriate strategy to cope with the anger of the schizophrenic patients until understand well the characteristics of anger in them.

상아질 접착에서 collagenase와 esterase가 미세인장결합강도에 미치는 영향

정영정,현홍근,김영재,김정욱,이상훈,김종철,한세현,장기택 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.2

상아질-레진 접착강도에 대한 collagenase와 esterase의 영향을 살펴보기 위해, 소구치의 교합면 상아질에 Single Bond 2와 Clearfil SE Bond로 접착을 시행하고 미세 시편을 제작하여 PBS, collagenase 용액, esterase 용액에 4주간 보관한 후 미세인장결합강도를 측정, 비교하여 다음과 같은 결론을 얻었다. 1. 모든 보관 용액에서 Single Bond 2의 미세인장결합강도는 Clearfil SE Bond보다 유의하게 낮았다(p<0.05). 2. Single Bond 2의 미세인장결합강도는 collagenase군이 PBS군, esterase군보다 낮았다(p>0.05). 3. Clearfil SE Bond의 미세인장결합강도는 esterase군이 PBS군에 비해 낮았으나(p>0.05), collagenase군보다는 높았다(p>0.05). Collagenase군은 PBS군에 비해 유의하게 낮은 미세인장결합강도를 보였다(p<0.05). The purpose of this study was to evaluate the effect of collagenase and esterase on the microtensile bond strength (μTBS) in dentin bonding. After resin composites were bonded to occlusal dentin, μTBS specimens were formed and stored in PBS, collagenase, or esterase solution. After 4-week storage, μTBS was determined and, the results were as follows: 1. μTBS values of Single Bond 2 were lower than those of Clearfil SE Bond for all storage medium (p<0.05). 2. In single Bond 2 group, collagenase solution lowered bond strength more than PBS and esterase solution (p>0.05). 3. In Clearfil SE Bond group, esterase solution lowered bond strength more than PBS(p>0.05). Collagenase solution lowered bond strength more than esterase solution(p>0.05) and PBS(p<0.05).

인천 인현동 호프집 화재 피해자 분석

최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.

심실 중격 결손에 의한 감염성 심내막염 환자의 치과치료

양정현,현홍근,김영재,김정욱,장기택,이상훈,한세현,김종철 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.3

불소배합 음용수와 불화우유 섭취에 의한 백서치아 탈회 억제효과 비교

송근배,송재상,김혜영,김정숙,김지영 경북대학교 병원 2002 경북대학교병원의학연구소논문집 Vol.6 No.1

The purpose of this study was to investigate the inhibitory effect of fluoride in the water and milk on tooth enamel dissolution by commercial beverages. 3 weekold 60 female sprague-Dawley strain were divided into four groups and given the following dosage of fluoride in the drinking water:0,1,5 and 50ppm for six and twelve weeks ad libitum. Upper incisors were prepared for specimen with low speed dental disc.The slabs of each incisors were embedded in unsaturated polyester,polished with #1,200 silicon carbide paper and aluminisilicate powder.Three kinds of beverage were selected for test medium and enamel slabs of rat incisors were dipped for 60 and 120 minutes in each beverage.Surface microhardness was examined before and after dissolution with beverage. All collected data were analyzed using the SAS package.Differences between groups were compared by the one-way ANOVA,Duncan's multiple range test and ANCOVA procedures. Corresponding p-values were considered significant at the values less than 0.05. The obtained results were as follows: 1. Surface microhardness was significantly increased both 6 and 12 weeks groups compared with control group. Surface microhardness of high fluoride groups were also proportionally increased with increasing concentration of fluoride both in the water and milk. 2. There were significant differences of inhibitory effect of surface microhardness after 60 and 120 minutes emersion periods,and both at 6 and 12 weeks group in the veverage B and C,but not appeared in the beverage A. 3. The inhibitory effect of enamel dissolution was higher in the 12 weeks group than 6 weeks group both at the water fluoridation and milk fluoridation. 4. The differences of micro hardness between before and after emersion in the beverages were larger in the milk fluoridation groups than water fluoridation groups.

Holstein種의 血液化學値에 關한 硏究 : -Ⅰ. 成牝牛의 血液化學値- -Ⅰ. Blood Chemical Values of Adult Cows -

李載洪,林貞澤,韓邦根,金宇權 全南大學校 農漁村開發硏究所 1981 農業科學技術硏究 Vol.16 No.1

國內에서 飼育되고 있는 Holstein種成牝牛의 血液化學値를 얻고자 全南地域에서 飼育되고 있는 外觀上 健康하다고 認定된 經産牛 385頭를 對象으로 血液化學値를 調査檢討하여 다음과 같은 結論을 얻었다. 1. 平均血淸TP量은 7.35(5.10∼10.20)g/100㎖이었으며 年令의 增加에 따라서 漸漸 증가하는 傾向이 있었다. 2. 平均血淸Alb量은 3.51(2.50∼4.40)g/100㎖이었으며 年令別 差異는 認定할수 없었다. 3. 平均血淸Glb量은 3.84(1.40∼7.20)g/100㎖이었으며 年令의 增加에 따라서 漸漸 증가하는 傾向이 있었다. 4. 平均血淸 A/G比는 0.91(0.43∼2.64)이었으며 年令의 增加에 따라서 漸漸 증가하는 傾向이 있었다. 5. 平均血淸 cholesterol量은 179.38(46.4∼336.0)g/100㎖이었으며 年令의 增加에 따라 增加하여 4年牛를 頂点으로 다시 下向의 傾向을 나타내고 있었다. 6. 平均血淸 glucose量은 39.38(27.0∼57.3)㎎/100㎖로 낮았으며 年令別로 特徵的인 것은 發見할수 없었다. 7. 平均血淸 magnesium量은 2.72(0.20∼8.46)㎎/100㎖이었으며 老令牛에서 magnesium의 減少가 顯著하였다. 8. 平均血淸 calcium量은 8.69(6.34∼16.83)㎎/100㎖로 全般的으로 낮은 량이었으며 年令別 差異는 認定할수 없었다. 9. 平均血淸無機燐量은 5.88(3.50∼9.76)㎎/100㎖이었으며 年令別로 特徵的인 것은 發見할수 없었다. 10. 平均血淸Ca/P比는 1.48(0.68∼2.64)이었으며 年令別로 特徵的인 것은 發見할수 없었다. 11. 平均血淸 potassium量은 18.95(13.69∼24.24)㎎/100㎖이었으며 年令別 差異는 認定할수 없었다. 12. 平均血淸 sodium量은 315.90(282.86∼361.05)10.20)㎎/100㎖이었으며 年令別로 特徵的인 것은 發見할수 없었다. 13. 平均血淸 chloride量은 354.64(299.97∼361.05)㎎/100㎖이었으며 年令別 差異点은 發見할수 없었다. The present study was conducted to determine the blood chemical values of adult Holstein cows in Korea. Samples of blood were taken from 385 healthy cows in Chonnam province, and the results obtained are summarized as follows. 1. Mean serum totalprotein content was 7.35(5.10∼10.20)g/100㎖;it in creased with age. 2. Mean serum albumin content was 3.51(1.40∼4.40)g/100㎖;no differences were found between age groups in the serum albumin content. 3. Mean serum globulin content was 3.84(1.40∼7.20)g/100㎖; it increased with age. 4. Mean serum albumin/globulin ratio was 0.91(0.43∼2.64);it decreased with age. 5. Mean serum glucose concentration was 179.38(46.4∼336.0)g/100㎖;it increased up to 4 years of age and thereafter it decreased with age. 6. Mean serum glucose concentration was 39.38(27.0∼57.3)㎎/100㎖, which was low compared with other results. No differences were found in the glucose concentration between age groups. 7. Mean serum magnesium concentration was 2.72(0.20∼8.46)㎎/100㎖;it decreased significantly in older cows. 8. Mean serum calcium concentration was 8.69(6.34∼16.83)㎎/100㎖, which was low compared with other results. No differences were found in the calcium concentrati on between age groups. 9. Mean serum inorganic phosphate concentration was 5.88(3.50∼9.76)㎎/100㎖;no differences were found in the inorganic phosphate concentration between age groups. 10. Mean serum calcium/phosphate(Ca/P) ratio was 1.48(0.68∼2.64);no differences were found in the Ca/P ratio between age groups. 11. Mean serum potassium concentration was 18.95(13.69∼24.24)㎎/100㎖;no differences were found in the potassium concentration between age groups. 12. Mean serum sodium concentration was 315.90(282.86∼361.05)10.20)㎎/100㎖;no differences were found in the sodium concentration between age groups. 13. Mean serum chloride concentration was 354.64(299.97∼361.05)㎎/100㎖;no differences were found in the cholride concentration between age groups.

光質이 채소作物의 種子發芽와 初期生育 및 除草劑의 活性에 미치는 效果

李政明,金侊來,權臣漢,曺哉銑,朴啓仁,金尙根,李承雨 慶熙大學校 1987 論文集 Vol.16 No.-

Studies were conducted to investigate the response of some horticultural plants to various light qualities provided by different kind of materials such as cellophane sheets, EVA, PVC(polyvinyl chloride, and polyethylene (PE) films of different color. Major findings are summarized as follows. White fluorescence light and red light promoted seed germination of lettuce and inhibited that of radish seeds. Blue light inhibited the seed germination of both types of light-sensitive seeds. The light sensitivity varied considerably depending upon the kind of crops, cultivars, and the seed batches of the same cultivar. The blue light was equally or more strongly effective in inhibiting the seed germination as compared to the farred light. The growth of young seedlings developed from seeds was considerably promoted when grown under orange colored plastic film coverings. The growth of larger seedlings was, however, not influenced by the color of plastic films. Mulching pepper field with colored PVC film did not show further advantages over the commonly-used black PE film. Herbicidal activity of oxyfluorfen was very strong under natural light or red light conditions' and weak under blue or green light conditions. The degree of oxyfluorfen-induced phytotoxicity varied considerably depending upon the light quality and the kind of vegetable crops.

대형 화재로 인한 사상자의 손상 유형과 합병증 : 동인천 라이브호프 화재를 중심으로

신중호,김재광,염석란,신종환,민순식,임용수,양혁준,이근,황성연 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: High risks of fire alway exist for buildings in urban areas, especially those in downtown. Crowds, as well as more complex and larger structures, may cause more victims in the event of fire; therefore, emergency medical service plans must be established for such disastrous events. Methods: On the evening of October 30,1999, a fire broke out in downtown, Dong-Incheon Live-Hof restaurant; 56 people were killed and 76 were injured. Most of them were teenagers. We retrospectively reviewed the medical records of the victims, Results: 1) Among the 56 dead, 54 died from smoke inhalation, one from extensive burns, and one from sepsis during treatment. 2) Among the 76 injured, 70 patients suffered from smoke inhalation, 53 from burns, and 9 from several types of trauma (sprains, contusions, lacerations, abrasions, fractures, etc.). 3) Later complications were laryngeal edema, pulmonary edema, scar contracture, and hypoxic brain damage, and so forth. 4) Post traumatic stress syndrome was unexpectedly more prevalent in mildly to moderately injured survivors and witnesses than in seriously injured survivors. Conclusion: Many complications exist after a fire. Some may be resolved in time, but others may result in permanent sequelae. Early rescue, early triage, and early management during transport by emergency medical service (EMS) personnel can result in fewer complications and a lower mortality rate. Therefore, we propose the establishment of plans to be followed during various major disasters.