• 로봇학회논문지
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• 제5권3호
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• pp.177-185
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• 2010

In this paper, a wall climbing robot, called LAVAR, is developed, which is using an impeller for adhering. The adhesion mechanism of the robot consists of an impeller and two-layered suction seals which provide sufficient adhesion force for the robot body on the non smooth vertical wall and horizontal ceiling. The robot uses two driving-wheels and one ball-caster to maneuver the wall surface. A suspension mechanism is also used to overcome the obstacles on the wall surface. For its design, the whole adhering mechanism is analyzed and the control system is built up based on this analysis. The performances of the robot are experimentally verified on the vertical and horizontal flat surfaces.

• 한국주조공학회지
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• 제21권4호
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• pp.232-238
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• 2001

Experimental study on the twin roll strip casting of BCuP-5(Cu-15wt%Ag-wt5%P) alloy was carried out using laboratory scale horizontal type twin roll caster. In this study, among the various operating parameters, such as tundish angle, contact angle, pouring temperature, roll speed, presetting gap of the rolls and kinds of roll and tundish materials, effect of pouring temperature for strip casting of BCuP-5 alloy which has long freezing range of about $170^{\circ}C$ was mainly investigated. BCuP-5 alloy strip was successfully produced when pouring molten metal at lower temperature than its liquidus temperature. Microstructure of the cast strip consists of primary Cu and eutectic. Especially the size of primary Cu phase increased with decreasing of pouring temperature.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2014년도 제49차 동계학술대회논문집 22권1호
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• pp.457-460
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• 2014

본 논문에서는 네트워크의 발전과 빅 데이터 등의 차세대 기술에 발맞추어 단방향적 정보전달이 아닌, 고객 중심의 고객만족 서비스를 제안하고자 하나의 앱을 제작한다. 뷰티 캐스터 앱은 사용자들의 기본정보, 환경정보, 외부정보를 통합 분석한 '개인별 뷰티지수' 산출 등의 개인 정보 서비스와 함께 개인별 뷰티지수를 활용한 'Auto-counselling' 제공하고, 사용자의 정보로부터 획득한 히스토리를 분석하여 맞춤형 Commerce를 구성한다. 이러한 뷰티 캐스터 앱은 실제 코스메틱 기업에서 활용 가능하여 어플리케이션 상용화 시, 정보를 제공하는 기업과 기능을 제공하는 뷰티 캐스터 모두 이익을 얻을 수 있을 것이며, 이러한 뷰티 캐스터는 빅 데이터를 기반으로한 사용자의 니즈 파악이 빠른 어플리케이션 이므로 사용자들의 구매에 따라 컨텐츠가 변화하기 때문에 고객들이 원하는 정보를 빠르게 습득하여 전달 할 수 있다. 또한, 뷰티 지수의 고도화를 통한 '대한민국 코스메틱 지표화'를 기대하여 그 지표를 통해 고객들의 코스메틱 구매 기준을 마련할 수 있다.

• 약학회지
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• 제28권4호
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• pp.237-241
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• 1984

The effect of lofexidine, clonidine, and other drugs on castor oilinduced diarrhea in rats was investigated. Castor oil was administered orally and drugs were administered intraperitoneally. The results were as follows. 1. Lofexidine(0.1-43{\mu}mol$/kg) blocked dose dependently caster oil-induced diarrhea like clonidine, but its potency was weaker than that of clonidine, 1. Yohimbine (1-10{\mu}mol/kg$) antagonized the antidiarrheal action of lofexidine and clonidine. 3. Prazosin (3-30{\mu}mol/kg$) did not antagonize the antidiarrheal action of lofexidine and clonidine. 4. Metoclopramide, bromocriptine mesylate, and nadolol did not affect antidiarrheal action of lofexidine significantly. 5. Loperamid prolonged the antidiarrheal action of lofexidine.

• 한국주조공학회지
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• 제35권3호
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• pp.62-66
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• 2015

Tape casting is an important forming operation used to prepare flat sheets in the various industries. In this study, Doctor Blade tape casting of In-based low melting point alloy was carried out. The purpose of this investigation was to determine the possibility of applying the Doctor Blade tape casting process to the manufacture of low melting point alloy sheets that can be used as thermal fusible parts of battery safety systems. In-based molten alloy that has a melting point of $95^{\circ}C$ was produced; it's viscosity was measured at various temperatures. The molten alloy was used as a slip in the caster of the Doctor Blade tape casting system. The effects of the molten alloy temperatures and carrier speeds on the produced sheet shape were observed. For the casting conditions of 1.5 cm slip height, $120^{\circ}C$ slip temperature, 0.05 mm blade gap and 60 m/min. carrier speed, an In-based alloy thin tape well shaped with 0.16 mm uniform thickness was continuously produced.

• 한국응용과학기술학회지
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• 제39권6호
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• pp.924-931
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• 2022

Undenatured castor oil and trimethylolpropane (TMP) were used to obtain bio-based water-based polyurethane. Isophorone diisocyanate (IPDI) was incorporated into the formulation to obtain a transparent film, and ethylenediamine (EDA) was used for chain extension. In order to measure the change in physical properties according to the contents of castor oil and TMP, each tensile strength, elongation, and abrasion resistance test was conducted. As the contents of castor oil and TMP increased, the tensile strength increased, the elongation decreased, and the surface hardened strongly as the respective contents increased.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.859-864
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• 2003

This paper presents a design for the novel suspension mechanism of a two-wheeled mobile robot having two casters which is used for indoor environment. Although the indoor environment is less rough than the outdoor one, the fixed caster mechanism has some problems such as causing the robot to be immovable because robot's driving wheels do not have contact with the ground. Therefore, we tried installing a spring-damper suspension mechanism to keep driving capability and to remove pitching phenomenon. However, this suspension mechanism also has the problem, which the robot body inclined by disturbances does not return to the initial position. To deal with above problems and to accomplish desired performances, we designed the Multilayered Suspension Mechanism, which has springs and dampers working partially according to the inclined angle and angular velocity of robot body concerned with pitching. To analyze design, the equations of motion describing their dynamics were developed. Using the equations, simulation results show the improved performance. We confirm the usefulness of the Multilayered Suspension Mechanism by construction and test of a actual prototype.

• 동력기계공학회지
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• 제8권3호
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• pp.30-35
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• 2004

In the steel making industries, the continuous casting process has been applied to the number of company because of its economical benefit. Casting rolls are utilized for frictional drive and transport of solidifying slap. Dimensional tolerances, mechanical stability and surface condition of the cast roll can affect both the surface and internal quality of the product being cast. To overcome these problems, the industry is accelerating on the rate of technology improvements. Samples were overlaid on the S45C steel by submerged arc welding process. And the hardness, wear, electrochemical corrosion and oxidation tests were carried out. Test results were that all these materials were satisfying basic requirements of caster rolls. By these results, the addition of 0.1%Nb and 0.15%V increase mechanical properties and tempering resistance by its superior carbide forming characteristics in low carbon $12{\sim}13%Cr$ martensitic stainless steels.

• 대한한방내과학회지
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• 제11권1호
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• pp.15-27
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• 1990

For the purpose of examing on the efficancy of the Boolwhangumjeonggisan and on the effect of the Boolwhangumjeonggisan, dropsy animals given water boil ding abstraction exgis power. What made an experiment, the motility of isolate ileume, anticathartic action, the action of gastric juice, tied pylous ulcer and inhibited vomitting. 1. Boolwhangumjeonggisan displayed great suppresion effect in regard to automatic movement of the motility of isolated of mice and displayed anti-acethylcholine action, antibarium chloride action. Thus, the origin of muscle relaxation for internal smooth muscle is admitted. 2. It displayed great rexation effect in regard to fraction of rat's stomach and displayed contentional effect in regard to a cetylcholine and barium chloride. 3. It decreased rat of barium sulfate transport through the small intestine of mice. 4. It recognized anti-cathartic action, rat suffered from leading diarrhea by caster oil. 5. Total activity, pepsin secretion decreased and increased the pH of stomach in Shay's method. 6. It recognized powerful prevention effect on tied pylous ulcer. 7. It inhibited vomitting by administration of CuSo4 in frog.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1996년도 춘계학술대회
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• pp.284-284
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• 1996

Titrated Extract of Centella asiatica (TECA) is a poorly water-soluble extract from the Centella asiatica. Despite excellent wound preparation causes pain due to a low aqueous solubility and high hypertonicity and therefore, the patient's compliance of this drug is low. The objective of this study is to design a formulation of TECA with an improved therapeutic applicability via an adequate solubilization. A mixture of propylene glycol and ethoxylated hydrogenated caster oil achieved an acceptable solubilization of TECA (i.e. 10%) via a formulation of micelle. A preparation of extemporaneous TECA micelle was achieved by a dilution of the original micellar formulation with either water or saline. An estimated distribution of particle size was between 15.9 and 32.6 ㎜. The osmotic pressure of the formulation was found to be much lower than that found In a commercially available injectable (i.e. Madecassole). The erthrocytic hemolysis of micellar solution was lower than that with the conventional dosage form, consistent with the osmotic pressure data. Pain score after an injection of the micellar solution was assessed by the hind-paw writhing test using ICR mice and compared with that found with the conventional injectable. The data indicated that the injection of the micellar solution was a significantly less painful. These results indicated that a micellar solubilization, followed by an extemporaneous dilution, is a novel formulation of TECA with an improved therapeutic applicability.