펄프 叩解科程中 發生되는 微細纖維의 構造(I) : 針葉樹 펄프 Softwood Pulp

尹承洛,金在慶,金思翼,趙鍾洙 진주산업대학교 1998 산업과학기술연구소보 Vol.- No.5

펄프 고해과정중 발생되는 微細織維를 究明하기 위하여 시간별로 TMP, KP를 고해하여 濾水度 변화, 微細織維발생량 및 형태에 대하여 검토한 결과는 다음과 같다. 1.고해시간이 길어지면 濾水度, 微細織維 발생량은 증가되고, 섬유의 朶軟性 차이로 KP보다 TMP가 높았다. 2.고해에 의해 발생되는 微細織維는 절단된 朶細胞 破片과 細胞壁 2次壁의 마이크로휘브릴이다. 3.TMP, KP에서 발생된 微細細胞의 종류는 同하지만, 형태에서는 差異點을 보이고 있다. 印解가 진행되면 朶細胞는 小片化되고, 마이크로휘브릴은 切斷, 細分化된다. 4.印解初期에 발생된 微細織維는 1, 2次壁이 共存하지만, 印解가 더 진행되면, 1, 2次壁이 分離되었다. The freeness variation, the fine fibers occurrence and type were examined to investigate characteristics of fine fibers produced by beating during TMP(Thermomechanical Pulp) and KP(Kraft Pulp)processes. According to increased the beating time, the freeness and the fine fibers occurrence were gradually increased, and TMP showed higher freeness and occurrence than KP due to the difference on fiber softness. In addition, the fine fibers produced by beating were generally cut parenchyma cell and microfibrils of secondary wall. The kindness of fine fibers produced by TMP and KP processes were similar, but the types were different. At initial stage of besting, the primary and secondary walls of fine were coexisted. but as the beating was more processed, those primary and secondary walls were separated each other.

펄프 고해과정중 발생되는 미세섬유의 구조(II) : 활엽수 펄프 Hardwood pulp

윤승락,김재경,김사익,조종수,노정관 진주산업대학교 2000 산업과학기술연구소보 Vol.- No.7

Freeness occurrence and types of deciduous fine fibers depending on beating time were examined to evaluate morphological characteristics of fine fibers produced by beating of Kraft pulp(KP) processes. The results were as foltows; As the beating time was increased, freeness and occurrence of fine fibers were gradually increased. The fibrillation of fiber was started at 20 minutes(22˚ SR) after beating, and the cell wall was destroyed or cut after 70 minutes(67˚ SR). Fine fibers produced during beating were composed of microfibrils from wood fibers, fragments caused by vessel destruction, and parenchyma cells. At initial stage of beating, the primary and secondary walls of fine fibers were coexisted, but as the beating was more processed, fine fibers which were composed of secondary wall were increased, indicating of destruction of secondary cell wall. The morphological change of parenchyma cell was not occurred by beating.

전방 불안정성 견관절에서 이두박근의 근전도 활동성

김승호,하권익,김현숙,김선우,박종혁,김영민 대한견.주관절학회 2000 大韓肩.주關節學會誌 Vol.3 No.2

한국 엘리트 마라톤 선수들의 기질 특성에 관한 연구

김익겸,유승희,김복현 경희대학교 체육과학연구소 1999 體育學論文集 Vol.27 No.-

According to the research of Korean marathoners of Psychological characteristic, it can be conclusion follow this: 1.Korean marathoners have ambivert characteristic that it appears both extrovert and introvert as well as in the middle of both characteristic. 2.Look at the low of neuropsychiatric tendency, Korean marathoners are not easily shaken by emotion. 3.According to the temperament, most of marathoners belong to choleric temperament and sanguine temperament, and it can find good marathoners is located on the border of others temperament. According to the psychological Index of Korean marathoners, in order to develope high work ability in marathon, it recovers that extreme characteristic is not advisable whether extrovert and introvert or neuropsychiatric tendency index and temperament.

國內 Fiber Board 産業의 現況의 展望

金思翼,金在慶,趙鍾洙,尹承洛,盧正官 진주산업대학교 1999 산업과학기술연구소보 Vol.- No.6

상기에서 살펴본 바와 같이 국내 fiber board 산업은 생산 측면에서 목재 산업중 다른 판상제품에 비해 원자재 비율이 낮아 아직 개도국에 대한 경쟁우위를 일정기간 지속할 수 있을것으로 예상되지만, 인도네시아등에 비해 가격경쟁력이 취약하므로 고율의 수입관세가 지속유지되어야 하는 등 많은 문제점을 내포하고 있다. 따라서 국내 fiber board산업을 보호하기 위해서는 품질개선 및 기능성 부여, 원가절감등 을 통하여 fiber board산업의 안정화를 도모해야 할 것으로 생각된다. 또한 fiber board는 가구제조시 가장 중요한 원자재로써 그 용도가 거의 가구 재조용에 국한되어 있으나 향후 품질의 차별화 및 기능성 부여로 가구이외의 용도개발이 이루어져야만 그 수요확대에 따른 공급의 확대를 도모할 수 있을 것으로 판단된다. 최종적으로 국내의 현실을 감안한 fiber board산업은 양적인 성장을 위한 기술개발 투자가 지속적으로 이루어져야 할 것으로 판단된다. Domestic fiber board industry was less dependence rate of imported timber than plywood industry. So, until now fiber board industry will be estimate that domestic fiber board industry maintain competitive ability on the other developing countries. For the protection of domestic fiber board industry, it was necessary improving of quality, functional endowment and retrenchment of production cost. The use of fiber board has been limited to manufacturing furniture. If a use of fiber board is enlarged, supply on demand will be enlarged. Finally, domestic fiber board industry is needed more growth of quality than growth of quantity, and growth of quality on fiber board industry is required to much investment for technical development.

견관절 재발성 탈구에서 관절경적 견관절 전방 고정술의 결과 : 2년에서 6년간의 추시 관찰 Two to Six-Year Follow-up

김승호,하권익,노규철,류병담,오일빈 대한스포츠의학회 2003 대한스포츠의학회지 Vol.21 No.1

The purposes of this study were to prospectively evaluate the surgical otucome of the arthroscopic repair of the capsulolabral lesion using suture anchors in al large series of patients who were followed-up for mid-term periods. We evaluated 167 patients with traumatic recurrent anterior shoulder instability after an arthroscopic Bankart repair using suture anchors and nonabsorbable sutures. The mean age at the time of the operation was 25 years (15~46 years). There were 149 male and 18 female patients. Preoperatively and at the time of follow-up(mean, 44 months; range, 24~75 months), three objective outcome measurement tools(Rowe Score, University of California at Los Angeles Shoulder rating scale, and American Shoulder and Elbow Surgeons score) and two subjective measurements(pain and function visual analogue scale) sere assessed. The recurrence rate, range-of-motion, and risk factor for postoperative recurrence were evaluated. All shoulder scores improved after surgery(t-test, p<0.05). According to the Rowe scale, One hundred and thirty patients(78%) showed excellent, 29(17%) good, 6(4%) fair, and 2(2%) poor scored. Overall, postoperative recurrence of the instability was 4%(1 dislocation, 2 subluxation, and 4 positive anterior apprehensions). Postoperative recurrence was related with the glenoid defect of greater than 30%(Gehan's test, p<0.0001). In patients with postoperative instability, the recurrent episode was less frequent and shoulder function was related with the activity were increased after the surgery(t-test, p<0.001). One hundred and fifty-two patients(91%) returned to more than 90%of previous activities. The mean loss of external rotation was 2.0±4.0℃. In contrast to the previous reports on the results of the arthroscopic repair, arthroscopic capsulolabral repair using suture anchors provided satisfactory outcomes in terms of the recurrence, activity, and range of motion.

竹粉-시멘트의 水和反應에 關한 硏究

金思翼,金在慶,趙鍾洙,尹承洛 진주산업대학교 1997 산업과학기술연구소보 Vol.- No.4

대나무를 纖維工業의 原料로 利用하기 僞하여 竹粉 시멘트의 水化反應을 木質-시멘트 및 製紙슬러지-시멘트와 比較하여 測定하였다. 水化反應 促進을 위한 化學添加劑로는 CaCl_2와 MgCl_2 그리고 NH_4Cl을 시멘트 重量當 3%를 各 試驗片에 添加하였다. 또한 無處理時의 各 試驗片과 化學添加劑를 使用한 名 試驗片의 結晶形態 및 結晶構造를 調査하기 僞하여 走査電子顯微鏡으로 斷面을 測定하였다. 無處理時의 境遇, Henon bamboo, Moso bamboo 및 Giant timber bamoo는 전혀 水化反應을 보이지 않았으며, 化學添加劑를 利用한 境遇에는 木質水準으로 水化反應이 나타나 竹紛을 利用한 시멘트와의 水化反應은 使用해야 함을 알수 있었다. This study was examined on hydration of bamboo meal-cement composite. In a separate experiment, the heat of hydration generated from the bamboo meal (wood meal and paper sludge) - cement - water system was measured, and Moslemi's inhibitory index was caluated from the results. To improve the hydration of bamboo meal- cement, a series of experiments were conducted with the addition of various chencal additives such as calcium chloride(CaCl_2 ), magnesium chloride( MgCl_2 ) and ammonium chloride (NHCl) The amount of chemical additives was 3% based on the weight of the cement. A scanning electron microscope (SEM) was used to examine the crystallization of cement and bamboo meal ( wood and paper sludge ) - cement composite. These species , Henon bamboo, Moso bamboo and Giant timber bamboo were proved to be highly inhibitory in a series of hydration tests. The addition of chemical additivies, especially calcium chloride and magnesium chloride, appears to enhance compatibility in bamboo meal-cement-water composite.

좌측 관동맥에서 시작된 관동정맥루에 동반된 거대 동맥류 1예

신미승,맹선희,이혜진,조홍근,정의모,신길자 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.7

Mn-nodule의 선광에 관한 연구(제1보)

김익수,박동기,성일용,김승혁,엄제현 三陟大學校 2000 論文集 Vol.33 No.1

For the purpose of reserching the floatability of Managanese-nodule, the test was proformed by means of Zeta potential measuring and the flotation experiment for 10Å Manganite. The flotation condition in the flotation experiment were as follow. sample : Todorokite (0.3gr) sample size : 65 mesh ~ 200 mesh condition size : 10 min flotation time : 4 min air amount : 20 ㎖/min promoter : D.A.cl, S.D.S. PH regular : Hcl, CaO From the test the flotation result were summerized as follow. 1. The isoelectric point of 10Å Manganite in the Zeta potential measuring was pH 4.3. 2. The floatability of 10Å Manganite was 80% as a function of pH5 using 10mg/ℓ of D.A.cl. 3. The recovery of 10Å Manganite was best when the floatability of 10Å Manganite was 90% as using D.A.cl 80mg/ℓat PH 2.7.

中ㆍ高等生의 非行化過程과 指導問題

李承翼 淸州大學校 1974 論文集 Vol.8 No.1