• Bulletin of the Korean Chemical Society
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• v.17 no.5
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• pp.443-447
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• 1996

Several polysilanes with sterically bulky substituents such as poly(2-phenylpropyl)(n-hexyl)silane were prepared by Wurtz-type coupling. The polysilane products were mixtures of low-molecular-weight polymers (&bar{M};w~103) as major and high-molecular-weight polymers (&bar{M};w~106) as minor. Overall yields for polysilanes were in the range of 81-99%. λmax of liquid low MW polymers appeared at around 280 nm. Formations of solid high MW polymers were decreased by a longer reaction time and increased steric bulkiness of substituents. High MW polymers with λmax at 327 nm except crosslinked polymers were soluble in common organic solvents and found to be light sensitive. Crosslinked high MW polymer gave 21% TGA ceramic yield, compared with linear high polymer giving zero ceramic yield.

• Archives of Obesity and Metabolism
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• v.1 no.2
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• pp.83-88
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• 2022

Obesity increases the risk of developing metabolic diseases such as hypertension, type 2 diabetes, hyperlipidemia, and cardiovascular diseases, as well as some cancers. To prevent the occurrence of these diseases and death, it is essential to manage obesity. Though there are several treatments for obesity, lifestyle interventions, such as diet and exercise, and drug therapy are most widely used in clinical practice. Among the anti-obesity drugs available, the weight loss effect of naltrexone/bupropion has been well-proven. We present a case study in which naltrexone/bupropion, a glucagon-like peptide-1 agonist, and a sodium-glucose transporter 2 inhibitor showed significant weight loss and improved metabolic parameters. Additionally, the management of type 2 diabetes and hypertension, which are common diseases in patients with obesity, was also included.

• Bulletin of the Korean Chemical Society
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• v.19 no.3
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• pp.291-295
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• 1998

Various enaminonitriles-terminated reactive polymer precursors containing rigid aromatic and flexible alkyl units were prepared from the corresponding diamines and 1-chloro-1-phenyl-2,2-dicyanoethene (1). All the enaminonitriles-terminated precursors were characterized by spectroscopies and elemental analysis. They were highly soluble in DMF and NMP, and partially soluble in common organic solvents such as THF and acetone. They showed a large exotherm around 350 ℃ attributable to the thermal polymerization by crosslinking of the dicyanovinyl group. Upon heating the precursors, heat-resistant and insoluble network polymers were obtained. Thermogravimetric analyses of the precursors containing rigid aromatic moiety exhibited thermal stability with a 10% weight loss around 420-480 ℃ and 75-88% residual weight at 500 ℃ under nitrogen.

• Journal of Korean Neurosurgical Society
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• v.66 no.3
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• pp.274-280
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• 2023

Post-hemorrhagic hydrocephalus (PHH) in preterm infant is common, life-threatening and the main cause of bad developmental outcomes. Ventriculoperitoneal (VP) shunt is used as the ultimate treatment for PHH. Low birth weight and low gestational age are the combination of worse prognostic factors while the single most important prognostic factor of VP shunting is age. Aggressive and early intervention have better effect in intraventricular hemorrhage and intracranial pressures control. It reduces infection rate and brain damage resulted in delayed shunt insertion. It is extremely important to let PHH infants get older and gain weight to have internal organs to be matured before undergoing VP shunt. As premature infants undergo shunt after further growth, shunt-related complications would be reduced. So temporary surgical intervention is critical for PHH infants to have them enough time until permanently shunted.

• The Journal of Pediatrics of Korean Medicine
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• v.25 no.2
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• pp.73-87
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• 2011

Objectives: This study is to investigate life style and weight control based on the body mass index, and tongue diagnosis in adolescent girls. Help controling unnecessary weight and establishing proper understanding of desirable body images and healthy life for adolescents are expected. Methods: The questionnaire surveys and physical examinations were conducted to examine the life style, weight-control behaviors, and the health status of 173 adolescent girls in Jeonju. Among the students surveyed, 162 answered seriously and were accepted as subjects for the study. Results: 1. The mean height was 160.4 cm and weight was 54.21 kg. The mean BMI of the girls was 21.1 kg/m2, which is normal. The percentages of the normal weight group (71.6%), overweight group (16.7%), obesity group (9.9%), underweight group (1.9%) were shown respectively. 2. The oriental medicine doctor examined the tongue diagnosis. The thin and white tongue fur was the most common (20.7%). This diagnosis showed no statistical significance to BMI. 3. The ideal height for the girls was 165 cm, and the ideal weight was 49 kg. 4. A considerable number of girls (50.6%) thought that a thin body figure was the most beautiful body shape for the women. 5. Even though the percentages of an actual overweight or obese group were 26.6%, 42.0% of the girls thought that they were plump. 6. 94.83% of the normal weight group concerned about the weight regulation. 7. Many girls were dissatisfied with their own body shape, and 86.9% of girls regarded being in a shape was important. 70.69% of the normal weight group answered that they were under stress of their body shapes. Conclusions: The findings of this study demonstrate that there are serious misconceptions on body shapes of the adolescent girls, and mostly, unnecessary and inadequate weight control behaviors were done. Therefore, establishing adequately education on their desirable body images and healthy life is needed for the adolescent girls. In this study, there is no significant relationship between BMI and tongue diagnosis. For the number of subjects is not enough, further study on the relationship between the two is expected.

• English Language & Literature Teaching
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• no.6
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• pp.35-47
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• 2000

This study questions the validity of Crosslinguistic Influence (CLI) in EFL Learning. A ten-minute grammaticality judgement test involving resumptive pronouns in English relative clauses was given to 15 female subjects. The research results, which were analysed in terns of language transfer and universalist arguments, support the existence of a universal process that guides L2 learning, and some common developmental patterns between the two processes of L1 and L2 learning. Hence, the universalist view should be given at least equal Weight as the CLI approach.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06a
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• pp.359-360
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• 2011

In this work. a new receiver-driven channel rendezvous mechanism is proposed for multi-channel communication in Wireless sensor networks (WSNs). The work is a light-weight scheduled scheme. seems to be incurring less overhead in compare to traditional common control channel based rendezvous mechanisms.

• Structural Engineering and Mechanics
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• v.6 no.5
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• pp.543-554
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• 1998

Space truss structures may be fabricated in any of several common grid configurations. With different configurations, the truss performance varies considerably affecting both its competitiveness and suitability for specific applications. The work presented in this paper is an assessment of the most commonly adopted truss configurations and their effect on truss characteristics such as the stiffness/weight value, member stress distribution, number of joints and members, degree of redundancy and cost. The study is parametric and covers wide variations of truss aspect ratios, boundary conditions and span/depth ratios. The results of this study could be of significant value to the design of space truss structures.

• Journal of Dairy Science and Biotechnology
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• v.23 no.2
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• pp.99-106
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• 2005

Chronic diseases such as cancer, cardiovascular diseases, are the leading cause of death and disability in Korea since 1970 due to lifestyle change introduced by urbanization & industrialization. The type of cancer and cardiovascular diseases changes as lifestyle becomes westernized. These diseases account for 4 of every 10 deaths and affect the quality of lift of Koreans. Although chronic diseases are among the most common and costly healthy problems, they are also preventable. Adopting healthy behaviors such as quitting smoking, being physically active, eating right with moderate alcohol drinking, and maintaining healthy weight can prevent or control the effect of these diseases.

• 한국유가공학회:학술대회논문집
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• 2005.06a
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• pp.1-12
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• 2005

Chronic diseases such as cancer, cardiovascular diseases, are the leading cause of death and disability in Korea since 1970 due to lifestyle change introduced by urbanization & industrialization. The type of cancer and cardiovascular diseases changes as lifestyle becomes westernized. These diseases account for 4 of every 10 deaths and affect the quality of lift of Koreans. Although chronic diseases are among the most common and costly healthy problems, they are also preventable. Adopting healthy behaviors such as quitting smoking, being physically active, eating right with moderate alcohol drinking, and maintaining healthy weight can prevent or control the effect of these diseases.