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糞尿와 都市 廢棄物과의 混合處理에 대한 硏究 (Ⅰ) : 肥料化를 中心으로한 實驗室的 考察 Experimental study for the fertilization
金熙鐘,金相烈,金秀生,孫晋彦,金燦國,成周慶,吳英敏 동아대학교 환경문제연구소 1977 硏究報告 Vol.1 No.1
우리나라에 있어서 都市廢棄物의 主인 糞尿와 固形廢棄物의 太宗인 無煙炭재를 同時에 效果的으로 處理할 수 있고 또한 堆肥化시킬 수 있는 好氣性 酸化方式의 最適條件을 얻기 위하여 生糞尿 및 煉炭재의 理化學的 및 生物學的 數値를 測定하고 이를 基礎로하여 上記 兩者를 混合處理 할수 있는 消化條件(溫度, 糞尿와 煉炭재의 配合比, 기타 固形物의 添加量, 注入되는 空氣量의 變化)에 따른 C.O.D., B.O.D.의 變化, 水分 및 電氣傳導度의 變化, 熱灼減量, N量의 變化 等을 硏究하였으며 이들 사이의 相關關係를 檢討하여 다음과 같은 結論을 얻었다. 1. 生糞尿에 固形廢棄物인 煉炭재나 紙類를 配合시켜 消化시키므로서 케이크속의 질소成分의 量을 增加 시킬수 있다. 2. 煉炭재의 配合은 糞尿의 消化速度를 增加 시킨다. 3. 糞尿의 處理를 위한 反應槽의 溫度는 50℃보다 60℃로 維持 시킬때 消化速度가 크다. 4. 反應槽의 溫度를 一定하게 했을때 空氣의 注入速度는 初期 反應時는 적게하고 後期 反應時는 크게 함이 效果的 이다. For the effective treatment and usable disposal of urban wastes in the area of Busan city, the composition of the nightsoil and anthracite bulky ash which is the main munic ipal solid wastes have been studied on the digestion of the compositive mixtures with the variable conditions that are ratio of compounding between nightsoil and ash, amount of solid additives and volume of air for the effective airation at 50, 65℃. The digestion has been detected by the physico-chemical and biological data; pH, specific gravity, content of moisture, C.O.D., B.O.D., electroconductance of the solution of the results, decrease of nition, and volume of total free nitrogen etc. The results are obtained as follows. 1) The characteristics of domestic nightsoil are different to the foreign data as table 5, but the data of anthracite ash almost are same except the composition of Fe₂O₃ and Al₂O₃. 2) Amount of total free nitrogen are increased by the digestion with the addition of solid waste, as effective absorption, to the nightsoil. 3) The digestion are accelerated by the compounding of ash, but the adding of sulfuric acid to fix the free ammonia reduced reaction. 4) The airation have to proceed slowly at initial step, and then endure enough volume of air at the later step.
소부혈(少府穴) 자침(刺鍼)이 Kainic Acid로 유도(誘導)된 간질(癎疾) 동물(動物)모델의 해마(海馬) 치상회(齒狀回)에 미치는 영향(影響)
김승태 ( Seung Tae Kim ),정주호 ( Joo Ho Chung ),정우병 ( Wu Byung Jeong ),김장현 ( Jang Hyun Kim ),강민정 ( Min Jung Kang ),홍미숙 ( Mee Sook Hong ),박해정 ( Hae Jeong Park ),김연정 ( Yeon Jung Kim ),박히준 ( Hi Joon Park ),이혜 대한경락경혈학회 2007 Korean Journal of Acupuncture Vol.24 No.4
Objectives: Epilepsy is one of the most common serious brain disorders that affect people of all ages, and it is characterized by recurrent unprovoked seizures. We examined whether acupuncture can reduce both the incidence of seizures and hippocampal cell death in dentate gyrus (DG) using a mouse model of kainic acid (KA)-induced epilepsy. Methods: ICR mice (20~25g) were given acupuncture once a day at acupoint HT8 (sobu) bilaterally during 2 days before KA injection. After an intracerebroventricular injection of 0.1μg of KA, acupuncture treatment was subsequently administered once more (total 3 times), and the degree of seizure was observed for 20 min. Three hours after injection, we confirmed the neural cell death using cresyl violet staining and silver impregnation staining, and determined the expressions of c-Fos and glutamate decarboxylase (GAD)-67 using immunohistochemistry techniques in the DG. Results: KA induced epileptic seizure, neural cell death, increased c-Fos expression and decreased GAD-67 expression in the DG. Acupuncture treatment at HT8 reduced the severity of the epileptic seizure and inhibited neural cell death from KA. In addition, acupuncture normalized the expressions of c-Fos and GAD-67 in the same areas. Conclusions: These results demonstrated that acupuncture treatment at HT8 may reduce the KA-induced epileptic seizure and neural cell death in the DG possibly by normalizing c-Fos expressions and the gamma-aminobutyric acid neurons.
閔賢植,尹希苑,金鍾澈 서울대학교 국어교육과 2002 先淸語文 Vol.30 No.-
In the last 10 years Korean language education has made a wonderful growth in the method of study and teaching. Korean language is competitive enough in the international language market though the competitive power of Korean language is insufficient than Japanese and Chinese language. We should resolve many problems of Korean language education. For example, we should develop various curriculum, materials, technique of teaching and evaluating tools according to the need of learners and teachers. First of all we should train and produce excellent teachers who can teach Korean language as a foregin language or second language. Now the teachers of this field are trained in the irregular short-term programs founded in some major universities for commercial enterprise. Recently some academic degree courses have been founded in major universities also. But the management of all these degree courses and programs have many problems in curriculum, practice of teaching, professors of majors, official certification, appointment, and reeducation. Especially now the status of these trained teachers in this field can not be guaranteed by the national laws and Administration of Education. Therefore we should readjust the curriculum of regular degree courses and irregular short-term programs, and certificate the students by the official certification system. The curriculum of regular degree course should set these subjects as a standard curriculum: linguistics, Korean linguistics, language education, Korean language education as a foreign language or second language, Korean culture, Korean literature, method of language teaching, language acquisition, contrastive analysis of language, analysis of errors, practice of teaching for 1-6 months, and theory of language teaching.
金熙鍾,閔丙亨 동아대학교 공과대학 부설 한국자원개발연구소 1975 硏究報告 Vol.1 No.1
When the peak discharge of small and medium rivers is shown in the rational formula the mean intensity of rainfall depends on the time of concentration. Accordingly, the time of concentration should correctly be calculated in of order to obtain peak discharge with good accuracy. There is, however, no theoretical formula available, which gives the correct time of concentration, and empirical formulae are mainly used for determining it. In our country, Rziha formula has generally been use for a mountaineus region, and Kraven formula for a plain land. When these formulae mentioned above are, however, applied to small and medium rivers in Korea, the degree of accuracy obtained from these formulae is found to be low. After the authors have analysed a comparison between the measured times of concentration for small rivers in Busan area and small & medium rivers in the Nakdong basin, and the calculated values using two formulae given above together with the following formulae (1) American Society for Soil Preservation formula T_(c)=(0.868 L³/H)^(0.385) (2) Kirpich formula T_(C)=0.0001875 L^(0.77)/I^(0.385) (3) Japanese Civil Eng. Research Center formula T_(c)=1.67×10^(-3)(L/√I)^(0.7) for rural basin T_(c)=2.40×10^(-4)(L/√I)^(0.7) for urban basin, the conformity of T_(c)= m(L³/H_(0))^(n) type formula, which is obtained by I_(0)(- H_(0)/L), is found to better as a formula for the determination of time of concentration, as compared to that obtained by I(-H/L.) The formulae to be published for the time of concentration on small rivers in Busan area and small & medium revers in the Nakdong basin are as follows; 1. T_(c)(min)= 2.600(L³/H_(0))^(0.383) for small rivers in Busan area. 2. T_(c)(hr)=1.581(L³/H_(0))^0.(128) for small & medium rivers in the Nakdong basin where, L=length of river (㎞) H_(0)=2F/L(㎞) F=area between river bed line and horizontal line based at the practical target point in river profile (㎢)
海雲台 海水浴場 浸蝕에 미치는 海岸制防의 影響에 대하여 (Ⅱ)
閔丙亨,金熙鐘,朴雲龍,金嘉也 동아대학교 공과대학 부설 한국자원개발연구소 1985 硏究報告 Vol.9 No.1
This study has been carried out to investigate into the beach deformation caused by the construction of a sea well. It has been performed to determine the values of three dimensional movable bed hydraulic model test on the basis of the values of the marine investigation of HAE UN DAE beach and two dimensional movable bed hydraulic model test. Form the results of this work a protection method of HAE UN DAE beach erosion can be proposed to be the construction of T type jetty.
혼화재 종류별 온도 변화에 따른 콘크리트의 응결 및 강도발현 특성
주은희,손명수,차천수,한민철,김성수,한천구 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
The objective the paper is to investigate the physical and mechanical properties of concrete incorporating mineral admixtures. For setting properties, at low curing temperature, setting time of concrete with mineral admixture is delayed compared with that of plain concrete. But, use of cement kiln dust(CKD) has a desirable effect on reducing setting retard under low curing temperature. For compressive strength, concrete with FA and BS have low strength at early stage compared with that of plain concrete under low curing temperature. However, the use of CKD resulted in an enhancement of compressive strength at early stage under low curing temperature, and exhibited a similar level of compressive strength with plain concrete. For this reason, use of CKD in cold weather concreting has positive effect on strength development at low curing temperature under early age.
Hot Plate장치를 이용한 TTD사 제조조건에 따른 사의 물성변화 연구
송민규,김희동,권오경 한국의류산업학회 2005 한국의류산업학회지 Vol.7 No.2
In this the study, the effects of the manufacturing process conditions on the properties Thick and Thin Diameter yarns(TTD yarns) prepared with hot plate device in the draw winder were determined. Physical properties including wet shrinkage, tenacity and elongation of the samples were measured and thick and thin effect was analysed with the evenness tester. The results were as the follows: There was little change the wet shrinkage of the TTD yarns in the range of 70°C- 80°C of R1 temperature(lower hot cylinder) with the same Hot Plate(H,P) temperature, but thc wet shrinkage of the TTIl yarns decreased 5-10% when RI temperature was 90°C. The wet shrinkage of the TTD yams decreased with the H/P temperature at the same temperature of R1, There was little effect of R1 and H/P temperature on the tenacity of TTD yarns. The elongation of TTD yarns increased with RL temperature at the same I-VP temperature. The elongation of TTD yarns increased little bit for the first time and then decreased above that temperature with increasing H/P temperature at the same R1 temper<ature. The thick and thin effect on the TTD yarns was obvious in 110°C of H/P temperature regardless of R1 temperature, while there was no thick and thin effect on the TTD yarns in 1 40°C of HiP temperature.