고로슬래그시멘트를 사용한 다공성 황토콘크리트의 성능 평가

김황희,강수만,박종식,박상우,전지홍,이진형,차상선,박찬기,Kim, Hwang-Hee,Kang, Su-Man,Park, Jong-Sik,Park, Sang-Woo,Jeon, Ji-Hong,Lee, Jin-Hyung,Cha, Sang-Sun,Park, Chan-Gi 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3

This study aims to evaluate a porous concrete using hwang-toh, blast furnace slag and blast furnace slag (BFS) cement instead of type I cement. The tests that were carried out to analysis the properties of porous hwang-toh BFS cement concrete included compressive strength, continuous void ratio, absorption rate, and pH value, repeated freezing and thawing test were conducted. Test results indicated that the performance in porous hwang-toh concrete are effective on the kaoline based binder materials. The pH value were shown in about 9.5 ~ 8.5. The compressive strength was increased and void ratio was decreased with increasing the kaoline based binder materials, respectively. The void ratio and compressive strength were in the range of about 21 ~ 30 %, 8 ~ 13 MPa, respectively. The increased in void ratio of more than 25 % is showed to reduce the resistance of repeated freezing and thawing. Also, the resistance of repeated freezing of thawing and the compressive strength of porous hwang-toh BFS cement concrete are independent with hwang-toh content and BFS cement amount. But, the void ratio was decreased with increasing the high volume hwang-toh contents (more than 15 %).

新品種 밀 "早光"의 沓裏作 播種期 및 播種量에 관한 硏究

黃鍾奎,崔京求,陳星桂 全北大學校 1979 論文集 Vol.21 No.-

This experiment was carried out under different seeding dates(October 10, Oct. 20 or November 10) and seeding rates (20, 30, 35 ℓ 10a) from 1976 to 1977 in Iri in order to study the suitable seeding date and seeding rate for Jokwang, the newly developed wheat variety, in double cropping paddy field. 1. Number of days to seedling emergence both on Oct. 20 and Oct. 30 were 14 days, but that of Nov. 10 was prolonged due to comparatively low temperature and about 37 days. 2. The heading date and the maturing date seemed to be shortened by 1 or 2 days in accordance with the earlier seeding date and the larger amount of seeding. 3. Number of panicles per square meter seeded on Oct. 20 was 506 which marked the most among the three seeding dates. 30ℓ 10a plot showed the most in panicle number among three seeding rates. 4. Number of grains per panicles was increased by 1 or 2 grains with hastened seeding date, but it was decreased by 2 or 3 grains with the increase in seeding rate. 5. The weight of 1,000 grains of the plots both seeded on Oct. 20 and Oct. 30 was about 38.0 g. and that of Nov. 10 was 35.0g. On the other hand, there were almost negligible differences in 1,000 grains weight between seeding rates at the same seeding date. 6. The yield of the plot seeded on Oct. 20 was 359 ㎏ 10a which marked the highest among the three seeding dates. Among seeding rates, 30 ℓ/10a plot showed the highest yield of 351 ㎏ 10a. However, the highest yield among all treatments, seeding dates and seeding rates, was 382 ㎏ 10a which was obtained from the plot seeded on Oct. 20 with the seeding rate of 30 ℓ/10a. 7. Therefore, it was considered that the suitable seeding date for Jokwang, the newly developed wheat variety, in double cropping paddy field in Iri area was Oct. 20 and its seeding rate was 30ℓ/10a.

두개강내 혈종을 동반한 전이성 융모막암종 : 증례보고 Case Report

황수현,이현석,박용규,박인성,김은상,정진명,한종우 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.8

The authors report 2 cases of metastatic choriocarcinoma associated with intracranial hemorrhage One of them had intracranial hemorrhage on the right frontal lobe and the other one developed intracranial hemorrhage and enhancing mass on the parietal lobe revealed by admission brain CT They had rebled intracranially 2 and 3 times respectively. Even though the patients had recieved intracranial decompressive operations. they eventually died of intracranial rebleeding or hemothorax. respectively. These tumors generally occur in women of childbearing age and commonly produce signs and symptoms of subarachnoid hemorrhage, intracerebral hemorrhage or brain tumor Metastatic choriocarcinoma of the brain is a curable lesion. Cure is generally achieved by extirpation of the tumor chemotherapy. and irradiation of the site of the cerebral metastasis. The two cases in this report have been unsuccessful in their management.

Interleukin-2가 Mouse 폐장의 폐포간 중격의 미세구조에 미치는 영향

황세진,김종우,정호삼,이규식 한양대학교 의과대학 1990 한양의대 학술지 Vol.10 No.1

Interleukin-2, a kind of lymphokine which is produced by activated T-lymphocytes during an immune response, is known to act not only as a growth factor for many cells of immune system but stimulates differentiation of cells of immune system. Although interleukin-2 is a useful agent for cancer immunotherapy and inhibiting agent of tumor cell metastasis, administration of interleukin-2 to cancer patient may cause various side effects such as pulmonary edema due to capillary leakage. In this experiment the author pursued the effects of interleukin-2 on ultrastructure of interalveolar septum in lung of mouse. Healthy male mice weighing about 20gm were used as experimental animals and divided into control group and experimental group. During the experiment water and foods were given ad libitum. Animals of control group were injected 0.2 ml of distilled water and animals of experimental grouup were injected 2 million units per kg body weight of interleukin-2 intraperitoneally Experimental animals were sacrified at 3 hours, 6 hours, 12 hours, 24 hours, 48 hours and 72 hours after administration and lung specimens were obtained. All specimens, which were prefixed in 2% glutaradehyde-2.5% paraformaldehyde and postfixed in osmium tetraoxide were dehydrated and embedded in Epon Araldite 502. Ultrathinsection about 600-800 in thickness, and uranyl acetate and lead citrate double stain were performed and all electron microscopic specimens were observed with JEM 100cx-II electron microscope. The results obtained were as follows: 1. The type I pneumocyte of interalveolar septum of lungs in interleukin-2 treated mice were swollen, separated from basal lamina. 2. Capillary endothelial cell of interalveolar septum of lungs in interleukin-2 treated mice were swollen, and pinocytic vesicles in endothelial cell were enlarged and increased in number. 3. Lamellar bodies of type II pneumocytes of interalveolar septum of lungs in interleukin-2 treated mice were enlarged, and vacuolized. 4. Mitochondria and microvilli of type II pneumocytes of interalveolar septum of lungs in interleukin-2 treated mice were decreased in number. It is consequently suggested that interleukin-2 induces intracellular edema of both the type I pneumocyte and the endothelial cell and damages to type II pneumocyte of interalveolar septum of lung in mice but alveolar epithelial cells and endothelial cells are recover as time goes by.

원격구조모니터링시스템 개발을 위한 개념설계

황진하,박종희,정진덕,김주한 충북대학교 건설기술연구소 2003 建設技術論文集 Vol.22 No.2

A conceptual design for the development of a remote structural monitoring system is presented in this study. First of all, to satisfy the engineering and customer requirements, requirements/functional analysis for the remote structural monitoring systems are performed in context of the systems approach. The problem definition is given, And the market competitors are analyzed by benchmarking and the alternatives are evaluated. Based on the informations from the above stage, the key elements of the systems are extracted through the functional decomposition and the schematic specifications are described.

뇌동맥류 파열에 의한 급성 경막하 혈종이나 뇌내혈종을 동반한 혼수상태 환자에 대한 뇌혈관 조영술을 시행하지 않은 응급수술

황수현,박용규,백선하,박인성,김은상,정진명,한종우 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10

Neurologically based clinical grading scales offer excellent prognostic information for the patient suuffering diffuse subarachnoid hemorrhaging. These grading scales are less applicable to patients with life-threatening intraparenchymal or subdural hematomas after aneurysmal rupture. During 2 and half years. 9 patients(ICH;5.SDH:1. ICH+SDH:3) in a comatose state with brain stem compression syndromes documented by computerized tomographic scans have undergone emergent operation without angiography in our neurosurgical departement. Each patient was so critically ill that we believed it unwise to delay craniotomy for diagnostic angiography. The average delay from the detection to operation was 2 hours. The origin of the hematoma was identified as a berry aneurysm of the middle cerebral artery bifurcation in seven patients and a posterior communicating artery aneurysm in two patients. One patient had a good recovery. two patients recovered with hemipardsis and mild cognitive dysfunction. two patients were vegetative and died due to pneumonia. and four patients died due to brain swelling within two weeks postoperatively. Emergent craniotomy with empiric exploration of appropriate subarachnoid cisterns after hematoma decompression may be life-saving management in some cases. The delay imposed for diagnostic angiography may be avoided in attempts to save vital minutes of severe brain stem compression.

상시계측자료의 관리를 위한 테이터베이스의 원형 설계

황진하,박종희,조대현 충북대학교 건설기술연구소 2003 建設技術論文集 Vol.22 No.2

Prototype design of the database for ambient measurement data management is presented in this paper. To express the associated data generated during the whole process of ambient measurement efficiently, requirement/task analysis for database management system are peformed. And then to define and organize objects and schema for data model, conceptual and logical design are performed, which convert data model into logical schema. This prototype database is constructed by using via the object-relational data modelling approach.

Ethephon 및 Aminoethoxyvinylglycine 처리가 ‘원황’ 배 모의 수출 환경에서의 품질 및 생리장해 발생에 미치는 영향

최진호,이욱용,안영직,황용수,천종필 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

We investigate the effect of preharvest spray of aminoethoxyvinylglycine (AVG), an inhibitor of ACC synthase activity, on fruit quality of ‘Wonhwang’ pear (Pyrus pyrifolia Nakai). And the effects were compared with ethephon which releasing ethylene to elucidate treatment efficacy of ethylene biosynthesis inhibitor on Asian pears. Chemicals were sprayed on 30 days before harvest with AVG (75 and 150 mg/L) and ethephon (100 mg/L), respectively. Highest flesh firmness during 21 days of shelf-life at 25℃ after 30 days of cold storage was attained in the fruit treated with 150 mg/L AVG (26.5N) when compared with untreated control (16.7N), while the fruits treated with 100 mg/L ethephon completely lost their marketability within 14 days of shelf-life by mass drop of firmness down to 11.6N. Low incidence of physiological disorders including pithiness and core browning were attained at the fruits treated with 150 mg/L AVG when we compared with untreated control. No occurrence of mealiness found in the fruits treated with AVG but ethephon treated fruits showed 36.4% during 14 days of shelf-life. Consequently, AVG spray at the concentration of 150mg/L on Asian pear ‘Wonhwang’ fruit regarded as useful preharvest management approach for keeping quality during marketing period after simulated exportation.

설계조건 분할에 의한 다단계 구조최적화

황진하,박종회,정진덕 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.1

A new method that performs multilevel design optimization for structural design is presented in this paper. This study demonstrates hybrid optimization method which combines a general mathematical programming algorithm with classical fully stressed design method. Systems optimization is achieved with system level constraints by the former, while the latter is exercised with local constraints in subsystem level. Numerical results for widely used truss models show the validity and efficiency of this study.

한국인 정신분열병과 HLA-DRB1 대립유전자의 관련성

황나영,김종원,오흥범,조지희,오선영,홍진표,박종익,이동은 大韓神經精神醫學會 2000 신경정신의학 Vol.39 No.5

연구목적: 유전이 정신분열병의 중요한 원인이라는 것은 널리 인정되어 왔다. 본 연구는 한국인 정신분열병과HLA-DRB1 유전자좌와의 관련성을 알아보고 외국인 대상의 보고들과 비교함으로써 한국인 정신분열병의 유전적 특성을 밝히고자 시행하였다. 방법: 정신분열병 환자 70명을 대상으로 HLA-DRB1 대립유전자를 고해상도 수준까지 분석하였다. 저해상도 수준의 HLA-DR결과는 정상 한국인 2,000명의 연구 보고와 비교하였으며 고해상도 수준의 HLA-DRB1 결과는 정상 한국인 229명의 연구 보고와 비교하였다. 결과: 저해상도 수준에서는 HLA-DR11이 정신분열병 환자군에서 9.0%, 정산인에서는 3.8%의 빈도를 보여 환자군에서 통계적으로 유의하게 높은 빈도를 보였으며(p=0.005), 고해상도 수준에서는 HLA-DRB1*1101이 환자군에서 9.0%로 정상인의 1.8%보다 유의하게 높은 빈도를 보였다(p<0.001). 결론: 본 연구에서는 한국인 정신분열병과 HLA-DR11(HLA-DRB1*1101)이 양적 상관관계를 보여 백인에서 DR4와 부정적 상관관계를 보인 결과나 일본인에서 DR1(DRB1*0101)과 양적 상관관계를 보인 결과와 상이하였다. 이러한 한국인 정신분열병 환자의 유전적 특성은 가족연구 혹은 더 많은 수의 환자를 대상으로 한 관련연구를 통하여 재확인되어야 할 것이다. 중심단어:정신분열병·HLA-DRB1·관련연구. Objective: A genetic predisposition is widely accepted in schizophrenia. This study was intended to fine any association of HLA-DRB1 alleles with korean schizophrenics and thereby compare the results of other ethni groups. Method: The subjects were 70 unrelated Korean patients. Low and high resolution typing of HLA-DRB1 alleles were performed. The comparison groups were 2,000 unrelated healthy Koreans for low resolution HLA-DR and 229 unrelated healthy Koreans for HLA-DRB1 alleles. Results: Gene frequencies of HLA-DR11(patients 9.0%, healthy control 3.8%, p=0.005) and HLA-DRB1*1101(patients 9.0%, healthy control 1.8%, p<0.001) were significantly higher in Korean schizophrenics. Conclusion: The frequency of HLA-DR11(HLA-DRB1*1101) is significantly higher in Korean schizophrenics than in healthy Koreans. HLA-DR4 and HLA-DR1, which were known to be associated with Caucasian and Japanese schizophrenics, respectively, did not show statistical association with Korean schizophrenics. This association need to be reassured though further studies with families or association study with larger numbers of subjects. KEY WORDS:Schizophrenia·HLA-DRB1·Association study.