사이클 모사 프로그램을 이용한 대체냉매 냉동공조 시스템의 열역학적 해석

박량한,김영재 한국공업화학회 2004 응용화학 Vol.8 No.2

The system air-conditioner, which has one outdoor unit connecting several indoor unit units, can provide more energy saving and better environmental conditions than the conventional air-conditioning systems. But it is difficult to experimentally analyze behaviors of system air-conditioners due to various load conditions and combinations of indoor units. Therefore, it is important to develop a cycle simulation program for predicting the performance of system air-conditioners without complex experiments. The cycle simulation program for system air-conditioners consists of several subroutines for simulating indoor unit, outdoor unit, compressor, and expansion devices, and for estimating the thermodynamic and transport properties of the refrigerants and moist air. It was programmed with Digital Visual Fortran for the main simulation code and Visual Basic for the graphic user interface.

프리스트레스트 콘크리트 橋梁의 解析 및 設計自動化

金亮均,李準熙,崔正鎬,申鉉穆 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.2

Computer programs called "PCBRG" and "PCPST' were developed to analyze and design the prestressed concrete bridge. PCBRG is a structural analysis program which can determine the member forces, displacements and adaptable area of tendon by iteration method. PCPST is a post-processor for design. It enables design variables verified and the results of analysis (stress, member force and displacement, etc) are presented in the screen. Also the shear force and bending strength by the deformation compatibility method were checked.

麥作에 있어서 Isoproturon의 殺草特性과 藥害 및 收量에 미치는 影響

梁瑢承(Ryang, Y. S),金鍾奭(J. S. Kim),韓性洙(S. S. Han),梁桓承(H. S. Ryang) 韓國雜草學會 1982 Weed&Turfgrass Science Vol.2 No.2

전이지대 방언의 변이 양상 고찰 -서남방언과 동남방언의 접경지를 중심으로-

위평량 ( Wi Pyeong-ryang ) 한국방언학회 2021 방언학 Vol.- No.33

본고에서는 서남방언과 동남방언의 접경지에 분포하는 변이형들을 접촉과 변이의 정도를 따라서 3가지 형태로 분류하여 정리하여 보았다. 1) 단어, 음절 단위의 차용과 변이(병렬, 혼효), 2) 음소 단위의 차용과 변이(자음, 모음 차용), 3) 제3유형으로의 변이 가능성을 살펴볼 것이다. 이 중 제3유형의 변이형들은 방언의 접촉과정에서 나타날 수 있는 ‘아래아(ㆍ) 변화의 방향’, ‘자음의 충돌과 변화’ 등에 대한 새로운 시각을 제시해 줄 수 있을 것이다. 그리고 만약 이러한 결과가 접촉의 과정에서 나타나는 변이의 모습으로 타당성을 가질 수 있다면 다른 방언 접경지의 수많은 변이형들을 재조명해 볼 수 있을 것이며, 다양한 환경에서 나타나는 국어의 음운변화 과정도 예측해 볼 수 있지 않을까 생각한다. I tried to find(prove) that any variation, which takes place when one dialect comes in contact with the other, does not take forms randomly but to any extent with direction and rules in Wi Pyeong-ryang(2005). And so I will confirm again that any variation keeps the head of the base of the former word and permits the tail of the other word depending upon the extent(degree) of each other’s influence through the distribution of ‘galkwi’(‘fork’) word forms. However, the causes of any variation are so varied and difficult to predict that any variation is varied and complex. It is difficult to conclude whether this aspect is the result of the contact of two dialects or the area’s particular aspects of the language of the area in question. This work will investigate(study) a lot of variations of the border lines of Jeallado and Gyongsangdo. These areas show the difference of west-southern dialect and east-southern dialect. The types of variation of these areas are 1) borrowing and variation of a word or a syllable 2) borrowing and variation of a phoneme (consonant, vowel borrowing) 3) the possibility of variation to the third type. I don’t jump to a conclusion that the new types, which are assumed to be the variations of the third type, resulted from the contact of the dialects. I will analyze these types based on the viewpoint of contact dialects. I will consider the possibility that we will predict the process of Korean phonologic changes if these changes are from the process of contact. Though this viewpoint is farfetched, I give(show) you(the readers) the chance of scrutinizing the reality of the variation of the contact areas.

Flow Cytometric Characterization of Lymphocyte Subpopulations in Mice Infected with Clonorchis sinensis

Ryang,Yong-Suk,Ahn,Yung-Kyum,Shin,In-Soon THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 1996 Journal of biomedical laboratory sciences Vol.2 No.1

최근 세포 표면의 다양한 항원들이 발견되고 T세포 아형에 대한 정량적 측정이 가능하게 됨에 따라 세포성 면역기전의 규명과 이해에 획기적인 진전을 보이고 있다. T세포 아형의 phdenotype은 실험동물의 모델(model)이나 종(species)에 따라서 다양하며 차이가 나는 것으로 알려져 있다. 우리나라의 경우 아직도 80만명 이상의 국민이 간흡충에 감염되어 있을 것으로 추정되는 문제의 기생충이며 감염상태가 만성적일 때에는 간경화나 간암으로 까지 진행되는 흡충으로서 이에 대한 대책이 요구되고 있다. 그동안 간흡충의 면역에 대한 연구는 체액성 면역에 대한 연구는 많은 규명과 진전이 있어 왔으나 세포성 면역에 대한 기전이나 특성에 대한 연구는 미미한 상태이다. 저자들은 이와같은 사정을 감안하여 마우스를 실험 모델로 할 때에 요구되는 참고 자료와 기본 정보를 구하고자 하였다. 즉, 간흡충에 대한 세포 면역학적인 일부의 특성을 알아 보았으며, 특히 비장 림프구 아형에 대한 phenotype의 특성을 알아 본 결과 다음과 같은 성적을 얻었다. 간흡충의 조항원을 면역증강제와 함께 복강 투여한 후 기간 별로 비장 림프구의 아형 특성을 flow cytometry로 측정한 결과, CD2, CD5 그리고 CD8는 투여 초기에는 감소하다가 투여 7주 후에 다시 증가하는 현상을 보였으며, CD4의 경우 투여 초기에는 약간 증가하다가 투여 7주 후에 다시 증가하는 성적을 보였다. A Recent discovery of surface antigens in cells has led to the success of quantitative measurement of T-cell subpopulations, and this has especially opened the way for an epoch-making development in the understanding and classification of cellular immune mechanisms. It is known that phenotypes of T-cell subpopulations exist in many forms according to the variation of species or animal experimental models. In Korea, Clonorchis sinensis still gives rise to public concern as it infects more than eighty million people and threatens the public by causing cirrhosis of the liver, or liver cancer when liver infection becomes prolonged and chronic. Up until now there has been much progress in research and improvement in the classification system of Clonorchis sinensis in the area of humoral immunity, but as for research in the area of cellular immune mechanisms, there is almost none. Knowing all these circumstances, the authors delved for the characterization of lymphocyte subpopulations with mice as Clonorchis sinensis in the area of cellular immunity, and obtained the following results. That is, we injected Clonorchis sinensis antigens mixed in Freund's ajuvant solution intraperitoneally in mice and measured the T-cell subpopulation characterization of spleen lymphocytes with flow cytometry. The results of these measurements showed that CD2, CD5 and CD8 decreased early following injections but then increased again seven weeks after the injections. CD4, however, showed a slight increase shortly after the injection but then a fair increase seven weeks after the injection.

A Numerical Study on Coal Devolatilization of Bituminous Coal Using CPD Model

Ryang Gyoon Kim(김량균),Byoung Hwa Lee(이병화),Chung Hwan Jeon(전창환),Young June Chang(장용준),Ju Hun Song(송주헌) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11

The coal considerably is the energy resource which is important with the new remarking energy resource. The coal conversion has two processes which are coal devolatilization and char oxidation. Coal devolatilization is important because it describes up to 70% weight loss and has been shown that nitrogen contribute 60 to 80% of the total NOx produced. The chemical percolation devolatilization(CPD) model is used here to describe coal devolatilization. The model was developed to describe coal devolatilization behavior of rapidly heated coal based on characteristics of the chemical structure of the parent coal. This paper describes CPD model in detail and makes an analysis of Shenhua coal(bituminous) which is used calculated 13-C NMR(carbon - nuclear magnetic resonance).

Study on Weed Control in Upland Rice Fields

Ryang, Whan Sung 전북대학교 농업과학기술연구소 1973 農大論文集 Vol.4 No.-

In order to screen selective herbicides having excellent weed control effect without crop injury in upland rice field, a test on weed control with fifteen kinds of chemicals including MON.0385 was carried out according to their time and rates of application. The soil textural class of the test field was sandy loam. The results obtained are summarized as follows: 1.No crop injury by treated chemicals except Simazine and Herban and no difference in initial crop injury between varieties were observed. In MON-0385 post-emergence treatment, initial crop injury was severe but the injury was fully recovered 50 days after treatment. 2. The chemicals which showed the most effective weed control rate for 70 days after treatment were MON-0385 at 6 kg/ha (PE*and POE**),4kg/ha (POE) and G-315 at 0.8 kg/ha (PE), and the chemicals which showed thorough control as observed 50 days after treatment were Swep at 4 kg/ha and Propanil. 3. Because Tongil variety was weak under drought weather condition, growth was not so good and yield was much affected due to the delayed heading stage (Sept,8∼10) by 10 days in comparison with Palgeong. The chemicals which showed the most increased yield against hand weeding were as follows. Palgeong: MON-0385-6kg/ha(PE and POE),Machete-3kg/ha, Swep-5kg/ha, G-315·0.6kg/ha(PE). Tonsil: MON-0385 6kg/ha (PE), MO-3kg/ha, TOK-3kg/ha, G-315-0.6 kg/ha, Machete-3kg/ha, MON-0385-2kg/ha (POE). ※PE: Pre-emergence treatmentn ※POE: Post-emergence treatment

Poster Session 4 : Neurobiology ; Regulation of food intake and hypothalamic neuropeptide gene expression by melanocortin analogues

( Ryang Yeo Kim ),( Byung Jin Kim ),( Weon Tae Lee ),( Sung Kil Lim ),( Ja Hyun Baik ) 한국생화학분자생물학회 (구 한국생화학회) 2003 생화학분자생물학회 춘계학술발표논문집 Vol.2003 No.-

휴리스틱 사용성 평가방법을 사용한 컴퓨터 보안의 사용자 인식에 대한 연구

Ryang-Hee Kim,Young-Guk Kwon,Kee-Sam Jeong 대한인간공학회 2012 대한인간공학회 학술대회논문집 Vol.2012 No.11

Objective: The aim of this study is to study user awareness of the computer security using selected heuristic usability method. There is no difference in age groups for awareness of computer security. Background: Currently, the networking computer system has been used in supplying electric power, opening facility of dam, web-surfing, air defense weapon of military, weather prediction and national security. There has been a leaking of personal information from a major portal site by the hackers. The victims’ personal information is used for crimes, such as “Illegally opening an account”, or “sending Spam”. Method: We collected 137 usability principles from previous literatures, including Nielsen (1994)`s checklist, screened a total of 34 usability principles among them in terms of tangible user interface main properties, and refined twenty five usability principles. The selected usability principles are classified systematically using statistical method, T-test and Principle Components Analysis (PCA) using Factor Analysis. 196 subjects (Groups: 20-40’s, 40-70’s) were divided into two groups: Adolescence group (N: 108, Female; 54, Male; 54), Senior-age group (N: 88, Female; 44, Male; 44). Results: As a result, 25 usability principles are categorized into 5 groups according to their correlations and we named them respectively (1) User Interaction-support, (2) User Cognitive-support (3) User Performance-support, (4) User Satisfaction-support, (5) User Physicality principles, as usability checklist items are produced a 5-point Likert scale. Conclusion: The result of T-teat showed that users" awareness of computer security groups were statistically significantly different between Adolescence group and Senior-age group (**p<.01). Application: We evaluated this users" awareness of computer security system using checklists which is a one of currently available tangible user interface prototype, and could suggest 25 usability items for users" awareness of computer security system for the Aged.

Secondary hyperparathyroidism due to multiple parathyroid carcinomas in a patient with chronic hemodialysis: a case report

Ryang So Ree,이욱,김미진,송상헌,이병주,김보현 고신대학교(의대) 고신대학교 의과대학 학술지 2022 고신대학교 의과대학 학술지 Vol.37 No.3

Parathyroid carcinoma (PC) in cases of secondary or tertiary hyperparathyroidism is relatively uncommon, and only a few case reports have described this entity. Although some papers have reported patients with one or two parathyroid malignancies, multiple PC–especially three or more–have been even more rarely reported. Herein, we report a case of secondary hyperparathyroidism due to multiple PCs in a chronic hemodialysis patient. A 54-year-old man with end-stage kidney disease was referred for hyperparathyroidism. He had been diagnosed with chronic kidney disease in 2001 and had begun hemodialysis in 2009. In laboratory tests, intact parathyroid hormone (iPTH) was markedly elevated to 1,144.1 pg/mL (normal range: 15.0–68.3 pg/mL) and serum calcium was mildly elevated to 10.56 mg/dL (normal range: 8.5–10.3 mg/dL). Ultrasonography showed hypoechoic nodules in the posterior part of both thyroid glands. All three nodules showed increased uptake on a 99mTc sestamibi scan. The patient underwent total parathyroidectomy with autotransplantation to the right forearm. Histopathology findings showed three PCs with capsular invasion and one parathyroid hyperplasia. In the immediate postoperative period, the iPTH level dropped from 1,446.8 to 82.4 pg/dL and, after 1 month, to 4.0 pg/dL. This patient needed oral calcium carbonate and active vitamin D to maintain appropriate serum calcium levels. Although multiple PCs are rare, they can cause secondary hyperparathyroidism. Therefore, clinicians should suspect multiple PCs when patients’ serum iPTH levels are exceptionally high. Additionally, since PCs could occur in multiple glands, autotransplantation of the parathyroid gland after parathyroidectomy should be done carefully.