Solitary waves in nonlocal NLS with dispersion averaged saturated nonlinearities

Hundertmark, Dirk,Lee, Young-Ran,Ried, Tobias,Zharnitsky, Vadim Elsevier 2018 Journal of differential equations Vol.265 No.8

<P><B>Abstract</B></P> <P>A nonlinear Schrödinger equation (NLS) with dispersion averaged nonlinearity of saturated type is considered. Such a nonlocal NLS is of integro-differential type and it arises naturally in modeling fiber-optics communication systems with periodically varying dispersion profile (dispersion management). The associated constrained variational principle is shown to posses a ground state solution by constructing a convergent minimizing sequence through the application of a method similar to the classical concentration compactness principle of Lions. One of the obstacles in applying this variational approach is that a saturated nonlocal nonlinearity does not satisfy uniformly the so-called strict sub-additivity condition. This is overcome by applying a special version of Ekeland's variational principle.</P>

Dispersion managed solitons in the presence of saturated nonlinearity

Hundertmark, D.,Lee, Y.R.,Ried, T.,Zharnitsky, V. North-Holland 2017 Physica. D, Nonlinear phenomena Vol.356 No.-

The averaged dispersion managed nonlinear Schrodinger equation with saturated nonlinearity is considered. It is shown that under rather general assumptions on the saturated nonlinearity, the ground state solution corresponding to the dispersion managed soliton can be found for both zero residual dispersion and positive residual dispersion. The same applies to diffraction management solitons, which are a discrete version describing certain waveguide arrays.

터널팬 샤프트 환기 방식에 따른 열 및 연기배출효과에 관한 연구

Rie,Dong-Ho,Yoo,Ji-Oh 한국화재소방학회 2004 한국화재소방학회논문지 Vol.18 No.2

지하철은 다른 구조물과 비교하여 화재발생 시 화재진압 및 인명구조에 본질적으로 취약한 구조적 특성을 내포하고 있다. 국내의 경우, 지하철 승강장 제연설비는 전용설비로 구축되어 있지 않고 화재발생 시 승강장환기설비 및 본선터널부의 환기설비를 제연모드로 절환하여 운영되고 있다. 제연효과는 이러한 까닭으로 환기설비의 위치, 용량 및 급배기방식에 종속된다. 본 연구에서는 지하철 승강장에서 열차 화재 발생 시, 승객의 안전한 대피로 확보가 가능한 선로부 환기기의 제연운전 효과의 실효성에 대한 검증을 목표로 한다. 따라서 지하승강장을 대상으로 승강장 내 기류해석 및 3차원 화재시뮬레이션을 수행하여 열차화재에 따른 승강장내 열 및 물질이동특성해석으로부터 선로부 배연운전모드에 따른 특성을 규명함으로서 승객안전성 확보에 목표를 둔다. Today's popular ventilation systems include the combined jet fans and electrostatic precipitation systems or the combined jet fans and vertical shaft system. Tunnels with these two ventilation systems applied have been designed and opened, more and more interest has been put in maintenance of a tunnel after opening. Therefore. it is to become more important to come up with the optimal operation mode and the method for the evaluation of ventilation system. In this study, to evaluate a tunnel ventilation and its economy, a dynamic simulation program was developed which can simulate the unsteady-state tunnel air velocity and concentration of pollutants according to the traffic flow variations and operation condition of a ventilation system. We clarified the effectiveness usage on tunnel ventilation by using it and also we could found the most economical ventilation operation mode by application in real exit tunnel. We obtained that combination of fan system and electrostatic precipitation system was more economical than jet fan priority operation mode.

Effect of a Disinfection System with Iodinated Anion Exchange Resin in NFT System

Rie Ogai,Hideyuki Yamaguchi,Toru Maruo,Yoshimiki Amemiya,Yutaka Shinohara 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Social and Illness-Related Factors Associated with Recovery Among People with Chronic Mental Illness in Japan

Rie Chiba,Norito Kawakami,Yuki Miyamoto 한국간호과학회 2009 한국간호과학회 학술대회 Vol.2009 No.10

A study of Heat & Smoke Extraction Effects by the Various Operation of funnel Fan Shaft Ventilation

Rie, Dong-Ho,Yoo, Ji-Oh Korean Institute of Fire Science and Engineering 2004 한국화재소방학회논문지 Vol.18 No.2

지하철은 다른 구조물과 비교하여 화재발생 시 화재진압 및 인명구조에 본질적으로 취약한 구조적 특성을 내포하고 있다. 국내의 경우, 지하철 승강장 제연설비는 전용설비로 구축되어 있지 않고 화재발생 시 승강장환기설비 및 본선터널부의 환기설비를 제연모드로 절환하여 운영되고 있다. 제연효과는 이러한 까닭으로 환기설비의 위치, 용량 및 급배기방식에 종속된다. 본 연구에서는 지하철 승강장에서 열차 화재 발생 시, 승객의 안전한 대피로 확보가 가능한 선로부 환기기의 제연운전 효과의 실효성에 대한 검증을 목표로 한다. 따라서 지하승강장을 대상으로 승강장 내 기류해석 및 3차원 화재시뮬레이션을 수행하여 열차화재에 따른 승강장내 열 및 물질이동특성해석으로부터 선로부 배연운전모드에 따른 특성을 규명함으로서 승객안전성 확보에 목표를 둔다. Today's popular ventilation systems include the combined jet fans and electrostatic precipitation systems or the combined jet fans and vertical shaft system. Tunnels with these two ventilation systems applied have been designed and opened, more and more interest has been put in maintenance of a tunnel after opening. Therefore. it is to become more important to come up with the optimal operation mode and the method for the evaluation of ventilation system. In this study, to evaluate a tunnel ventilation and its economy, a dynamic simulation program was developed which can simulate the unsteady-state tunnel air velocity and concentration of pollutants according to the traffic flow variations and operation condition of a ventilation system. We clarified the effectiveness usage on tunnel ventilation by using it and also we could found the most economical ventilation operation mode by application in real exit tunnel. We obtained that combination of fan system and electrostatic precipitation system was more economical than jet fan priority operation mode.

Recent trends in dioxin health risk assessment and dioxin TEF (Toxic Equivalency Factor) concept

Rie Masho 환경독성보건학회 2004 한국독성학회 심포지움 및 학술발표회 Vol.- No.-

中樞神經에 있어 CHLORPROMAZINE이 血壓에 미치는 影響에 關한 實驗的 硏究

李國柱,金相協 서울대학교 1968 서울대학교 論文集 Vol.19 No.-

Chlorpromazine has many pharmacological actions such as ganglion blocking, antiadrenaline, antiathistamine, antifibrillatory, antipyretic, anticonvaulsant and antiemetic actions. They also showed that chorpromazine enhenced the potency of analgesic and central-depressant drugs. Despite obvious evidences of an action on the central nervous system, the exact site of action of chlorpromazine has not been determined. It is quite likely that chorpromazine acts on many different potions of the brain. The hypotensive effects of chlorpromazine have long been recognized. Chlorpromazine can lower the arterial blood pressure through its adreneric blocking activity. Chlorpromazine inhibit the actions of epinephrine and noreponephrine on the blood pressure and can cause epinephrine reversal. Since chlorpromazine is known to act in a complex manner on the central nervous system, a central mechanism as one component of its hypotensive effect has been postulated by many workers. Depression of the resomotor center by chlorpromazine has been suggested by a number of investigators. Tangri and Bhargava posturlated that both the hypothalamic and the medullary vasomotor areas were depressed by chlopromazine. Bradley believes that chlopromaxeine has a selective action on the sensory inflow into the reticular formation from afferent pathways and he and his colldagues have investigated this action at the neuronal level. It is known that some kind of reciprocal influence exists between the amygdala and the brain stem and also that this influence is probably inhibitory. An interference with this reciprocal relationship could result in a "release" effect and account for the increased activity of the amygdala and hippocampus following administration of chlorpromazine and also for the seizures originating in these regions. In the study here reported, the effects of chlorpromazine on blood pressure was

視丘下部의 血糖代謝에 미치는 影響에 關한 實驗的 硏究

李國柱,金相協,安鍾瑾 서울대학교 1964 서울대학교 論文集 Vol.15 No.-

Anchner observed glucosuria in the dog after lesions of floor of Ⅲ. ventricle, and Sachs & McDonald also observed transient hyperglycemia following hypothalamic puncture. Himwich observed hyperglycemia in cat, anesthetized with amythal following electric stimulation in hypothalamus. Lewy & Gassman observed hyperglycemia in cat following stimulation of paraventricular nucleus. Baily, Bremer and D'amour, Keller observed transient glycosuria and hyglycemia following hypothalamic lesion respectively. Barris & Ingram reported that transient hyperglycemia or hypoglycemia appear after electric lesion of hypothalmiamus. Contrary, Keller, Noble & Keller et al experienced hypoglycemia following hypothalamic lesion in most cases. We would say, after reviewing above studies, there is close relationship between glucose metabolism and hypothalamus. Unfortunately there is no any agreement each other so far. Above studies were done by electric stimulation, electrolytic lesion or puncture methods etc. In order to investigate whether hypothalamus concerns blood glucose homeostasis or not, authors observed blood glucose level following injection of concentrated glucose solution in various area of hypothalamus directly in rabbits. 1.8 kg of body weight Korean white male rabbits were used and fed bean-curd refuse. The rabbit were fast for from 12 hours to 16 hours before experiments. We chose 30 gauge injection needle in order to prevent stimulation locally as much possible into the hypothalamus. Injection area were determined according to stereotaxic coordinates which was studied by 1.S. Choi. Solution of 0.05 c.c were injected bilaterally by stereotaxic apparatus. Solution of injection are 20% pure glucose solution and physiologic saline solution. According to Somogyi-Nelson micromethod, blood glucose are determined. The results were as follows. 1) 10 rabbits were used for simple injection whit 30 gauge needle in anterior, middle and posterior parts of hypothalamus. There not any significant changes except hypoglycemia in 2 cases, hyperglycemia in 1 case following injection of needles respectively. 2) When physiologic saline solution were injected in anterior hypothalamus in 7 rabbits, blood glucose level revealed rapid and marked rise 15 min., rapid decline 30 minutes, and regained normal level 90 minutes after injection. 3) When 20% glucose solution were injected in anterior hypothalamus in 11 rabbits, blood glucose level declined rapidly and inarkedly after 15 min. whereas 30 minutes later increased rapidly and kept higher blood glucose level continuously than fasting blood level. 4) When physiologic asline solution were injected in middle hypothalamus in 5 rabbits, blood glucose level rised markedly 15 minutes later and then declined slowly but still kept somewhat higher level of blood glucose than fasting level. 5) When 20% glucose solution were injected in middle hypoothalamus in 5 rabbits, blood glucoselevel rised slighty after 30 minutes and then declined slowly. 90 minutes later blood glucose level regained almost to the fasting level. 6) When physiologic saline solution were injected in posterior hypothalamus in 5 rabbits, blood glucose level rised slightly 15 minutes later and then slowly declined to fasting blood glucose level 90 minutes later. 7) When 20% glucose solution were injected in posterior hypothalamus in 5 rabbits, blood glucose level rised slightly 30 min. later and declined to fasting level 90 minutes later. 8) We can conclude above results as follows. Folowing injection of physiologic saline solution or 20% glucose solution in middle and posterior area of hypothalamus, blood glucose amount increased through there are some differences in its rapidity and degree. Against these results, as the physiologic saline solution was injected in anterior hypothalamus, the rabbit blood glucose level increased rapidlyand markedly, and then declined rapidly. Contrary, as the 20% glucose solutions were injected in the same area, it declined rapidly and then increased, followed by the higher blood glucose level continuously than fasting level. Therefore we assume that temporary rise of rabbit blood glucose level following injection of physiologic saline solution or 20% glucose solution in middle and posterior hypothalmus might be due to the stimulation of injection itself. But the tendency toward opposite direction of blood glucose level following injection of physiologic saline solution and 20% glucose solution in anterior hypothalamus indicates that anterior hypothalamus posses the function of "glucoreceptor" or "chemoreceptor" in broad sense.

小兒의 結核에 對한 免疫性과 그 年令的 差異 : 特히 髓液의 結核菌發育抑制能力

李國柱,姜元子,金相協 서울대학교 1958 서울대학교 論文集 Vol.7 No.-

The serum and spinal fluid of non­tuberculous and tuberculous meningitis patients were investigated on the inhibitory action against the growth of mycobacterium tuberculosis before and after the administration of the antibioties. Spinal fluid and blood samples were taken from 15 patients with tuberculous meningitis, 3 cases of adult pulmonary tuberculosis and Ⅰ case of miliary tuberculosis aging from 7 month to 38 year and from non­tuberculous patients with age ranging from 3 month to 29 year before and at 1, 2, 3, 4, hour intervals after antibiotics administration. The applied antibiotics treatment were: Streptomycin 50 ㎎ per kilogram of body weight daily, intramuscularly, INAH 10 ㎎, PAS 0.2 g per kilogram of body weight daily, orally. The result were as follows: 1. The spinal fluid specimens taken from non­tuberculous patients did not show any inhibitory action against the growth of tubercle bacilli.