• 약학회지
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• 제21권1호
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• pp.27-29
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• 1977

Amoxicillin formed blue color when heated with phophomolybdic acid in adequate condition, and the color showed maximal absorbance at 760nm. Effect of pH, concentration of phosphomolybdic acid and reating time were studied. And a new colorimetric method of determination of amoxicillin was developed.

• Archives of Pharmacal Research
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• 제23권3호
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• pp.211-221
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• 2000

L-3-Deoxymimosine-containing decapeptides were prepared for the development of protein tyrosine kinase (PTK) inhibitors. During the preparation of peptides, several side products were formed. identification and determination of major peptides generated were reported.

• 의료법학
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• 제9권2호
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• pp.77-107
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• 2008

In Republic of Chaina (Taiwan), Natural Death Act named "Anning Huauhe Yiliao Tiaoli" which means palliative and hospice care act was enacted in year of 2000. And enforced in the same year. Many scholars say that Taiwan's Act took Many U.S.A.'s acts such as 'Federal Patient Self-Determination Act 1990', 'California Natural Death Act 1976' and 'Washington Natural Death Act 1979' for a model. Taiwan's Act adopts a few outstanding systems - 'advance declarations' including 'living will' and 'durable power of attorney for health care', 'family-determination system' for a patient who is in a persistent unconscious state. This paper disusses this Act. 'The content is as follow: 1. A background of legislation. 2. The purpose of legislation. 3. The concept of terms. 4. Patient's self-determination. 5. Subrogated determination by family. 6. Keeping documents. 7. Punitive provision. 8. The relationship with euthanasia. 9. Controversial issues.

• Applied Biological Chemistry
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• 제17권1호
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• pp.49-53
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• 1974

Mohan's aniline procedure for the quantitative determination of niacin in feed additives containing various vitamines and minerals was compared with microbiological procedure utilizing growth rate of Lactobacillus arabinosus 17-5. Microbioassay was more sensitive than chemical procedure to the detection of standard niacin and was applicable to the determination of minute amounts of niacin. while both microbioassay and chemical proce dure were discovered to be unsatisfactory by the recovery test for the determination of niacin in feed additives containing much interfering substances. But the possibility of the determination of niacin in feed additives on chemical prccedure together with microbioassay was proved.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.694-697
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• 2005

A conceptual study about the angle information based orbit determination technique for a geostationary satellite was performed. With an assumption that the simultaneous observing of the earth and nearby stars is possible, we confirmed that the view angles between the earth and stars can be use as inputs for orbit determination process. By the MA TLAB simulation with least square method, the convergence is confirmed. This conceptual study was performed with the COMS for instance. This technique will be able to use as a back-up of ground station's orbit determination or a part of autonomous satellite operation.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2011년도 한국우주과학회보 제20권1호
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• pp.25.4-25.4
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• 2011

Various estimation methods based on Kalman filter have been applied to the real-time satellite orbit determination. The most popular method is the Extended Kalman Filter (EKF) and the Unscented Kalman Filter (UKF). The EKF is easy to implement and to use on orbit determination problem. However, the linearization process of the EKF can cause unstable solutions if the problem has the inaccurate reference orbit, sparse or insufficient observations. In this case, the UKF can be a good alternative because it does not contain linearization process. However, because both methods are based on Gaussian assumption, performance of estimation can become worse when the distribution of state parameters and process/measurement noise are non-Gaussian. In nonlinear/non-Gaussian problems the particle filter which is based on sequential Monte Carlo methods can guarantee more exact estimation results. This study develops and tests the particle filter for satellite orbit determination. The particle filter can be more effective methods for satellite orbit determination in nonlinear/non-Gaussian environment.

• 한국건설관리학회논문집
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• 제5권1호
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• pp.114-123
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• 2004

Contract time determination for highway construction projects has never been easy despite considerable research efforts from academia as well as industry. High variations in crew production rates are considered one of the main barriers to accurate contract time determination. This paper presents a methodology for collecting field information on crew production rates which will help to enhance the accuracy of contract time determination for highway bridge construction. Based on a standard data collection tool developed, data on field crew production rates was collected from 14 on going projects in Texas, USA, over the past two years. The production rates based on the data collected were considered by industry practitioners to be more realistic and practical than those available to the current practices. As more data becomes available, key drivers influencing production rates could be identified and provide site personnel with a means to better plan and control production in a project specific context.

• Journal of Ginseng Research
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• 제17권2호
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• pp.139-144
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• 1993

The method for colorimetric determination of acidic polysaccharide from Panax ginseng was investigated. It is possible to apply the method of carbazole-sulfuric acid to determination of pectin, and also to measure the amount of pectin in the mixture of various high molemlu compounds such as starch. cellulose and gum, etc. When the method of carbazole-sulfuric acid was applied to determine the amount of acidic polysaccharide, optical density at 525 nm increased linearly with an increase in the concentration of pure acidic polysaccharide. Effective extraction temperature with water for the determination of the amount of ginseng acidic polysaccharide (GAP) was $80{\circ}C$. In order to separate or concentrate GAP it was appropriate to precipitate the extract only once with 80% ethyl alcohol. GAP was very stable at $100{\circ}C$ for 4 hrs in aqueous solution and between pH values of 5.0~ 12.0.

• 한국정밀공학회지
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• 제9권3호
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• pp.157-164
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• 1992

This study concerns about the orbit prediction and orbit determination of Korean future communication satellite, called 'Moogunghwa", which will be motioned in the geo-stationary orbit. Perturbation effect on the satellite orbit due to nonspherical gravitation of the earth, gravitation of the sun and moon, radiation of sun, drag of the atmosphere was investigated. Cowell's method is used for orbit prediction. Orbit determination was performed by using Extended Kalman Filter which is suitable for real-time orbit determination. The result shows that the chacteristics of the satellite orbit has east-west and south-north drift. So the periodic control time and control value in the view of the periodic of error can be provided. The orbit determination demonstrated the effectiveness since the convergence performance on the positon and velocity error, and state error standard deviation is reasonable.able.

• 대한화학회지
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• 제7권4호
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• pp.299-303
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• 1963

A method of the colorimetric determination of titanium has been developed, based on the fact (IV) forms a stable blue complex with methylthymolblue(MTB) which is suitable for spectrophotometric determination of titanium in the concentration range of 0.2 to 22 $\mu$g per ml as $TiO_2$. The determination was carried out in the solution of pH range of 2.6 to 3.6, and the absorbancy of complex was at 600m$\mu$ with Coleman spectrophotometer. Titanium forms a 1:1 complex with MTB, which has a molar absorptivity, $1.1{\times}10^4$ at 600m\mu$. The effects of hydrogen ion concentration, reagent concentration, stability of complex, and hydrolysis were studied. Most of cations do not interfere seriously; however, many of anions such as oxalate, citrate, phosphate, chloride interfere in this determination.