• Title, Summary, Keyword: SIAS

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Copolyester Studies (6) Thermal Properties of Poly(Ethylene Terephthalate) Modified by 5-Sulfoisophthalic Acid Sodium Salt (Polyester의 개질에 관한 연구 (6) 5-Sulfoisophthalic Acid Sodium Salt 로 개질된 Poly(Ethylene Terephthalate)의 열적 성질)

  • Tae Oan Ahn;Han Mo Jeong
    • Journal of the Korean Chemical Society
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    • v.31 no.6
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    • pp.582-589
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    • 1987
  • The thermal properties of poly (ethylene terephthalate) (PET) modified by 5-sulfoisophthalic acid sodium salt(SIAS) were studied. The glass transition temperature was increased, and the melting temperature and the crystallization rate were decreased as the content of SIAS unit was increased. The decrease of crystallization rate is thought to be due to the polar, bulky sulfonic acid sodium salt group which greatly retards the crystallization on to the growing crystal surface of the diffused polymer chain. The crystallization mechanism of copolyester is dependent on the content of SIAS unit and the three dimensional growth of crystal is hindered by the added SIAS unit.

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A Study on the Web-based Overall Information Management System Developement of the Overhead Distribution Facilities Using SIAS (SIAS를 이용한 웹 기반 가동배전설비 종합 정보관리 시스템 개발에 관한 연구)

  • Lee, Dong-Yeop;Kim, Dong-Sik
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.5
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    • pp.898-904
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    • 2009
  • The objective of the present study lies in constructing web-based GIS system providing broad range of information applicable for power/telecommunications distribution facilities through cable. Nowadays, Korea is renowned forits faste sttele communications network across the nation enjoyable for being a test-runbed by worldwide contents providers. It is not too much to say that the trend is caused by the fact that Korea utilizes the cobweb-like power transmission cables applicable for the nationwide telecommunications networking. In particular, the trend has been all the more encouraged by the governmental drive to expedite the telecommunication network by way of the established power transmission facilities deemed as publicutility. Nevertheless, few can deny that the overexcessive competition among telecommunication service providers increasingly gives rise to unauthorized, arbitrary facilitation of distribution devices, which becomes much burden in operating the normal power/telecommunications distribution facilities by a power-generating company. In this regard, the study, to cope with such problems, attempts to develop a web GIS-based information management system compatible with NDIS(New Distribution Information System), a distribution facility management system now under operation by KEPCO, making advantage of GE Energy's SIAS(Smallworld Internet Application) technology. The model provided by this study is expected to get closer into effective operation of distribution facilities along with better sharing of information among conventional telecommunications operators, while getting rid of infringed facilitation cases

Evaluation on the Characteristics of Sludge Settleability Improvement using Sewage-sludge Activated Carbon (하수 슬러지 활성탄을 이용한 슬러지의 침강성 개선특성 평가)

  • Kim, Youn-kwon
    • Journal of Korean Society of Water Science and Technology
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    • v.26 no.5
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    • pp.119-127
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    • 2018
  • The performance of Sewage Treatment Plants (STPs) which have a low capability of solid-liquid separation at the secondary settletank gradually deteriorates the water quality of effluent. This study was conducted to increase and stabilize the sludge settleability within a short period of time by dosing the Sewage-Sludge Activated Carbon (S-SAC) as a Settleabillity Improvement Additives (SIAs) when the capability of solid-liquid separation deteriorates in secondary settletank. It was shown that S-SAC have the characteristics of SIAs similar to Coconut Activated Carbon (CAC), and the zone settling velocity is almost 4-5 times faster than that of the reference sample. The results for comparison of S-SAC and CAC experiments were obtained that regardless of the material of activated carbon, under high concentration of MLSS, small particle samples showed low efficiency and large particle size samples showed high efficiency of settleability improvement. In addition, experimental results with S-SAC was obtained that there was no significant difference in settleability improvement effect, according to particle size, and at least 27% the volume reduction effect can be expected under MLSS 3,400 mg/l. All the results, it was considered that the S-SAC was proved to be the promising material as an efficient SIAs.

Relationship of Physical Impairment, function and Insulin Resistance in stroke patients

  • Choi, Young-Eun;Kim, Ji-Hye;Yun, Young-Dae
    • International Journal of Contents
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    • v.9 no.3
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    • pp.62-66
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    • 2013
  • Insulin resistance is a risk factor for stroke or recurrent stroke. Sedentary behavior increases insulin resistance. This study aimed to identify the relationship between physical impairments and functions and insulin resistance, examining which physical impairments specifically influence insulin resistance the most. The subjects of this study were 63 stroke patients. The subject's insulin resistance and physical impairments and functions were measured using the Chedoke-McMaster Stroke Assessment (CMSA) and Stroke Impairment Assessment Set (SIAS). The study results exhibited that insulin resistance is statistically significantly related to the variable of foot according to the CMSA(r=.95, p<.05) and to the variable of lower extremity sensory function (touch) in relation to the SIAS(r=.91, p<.05). This study also revealed close correlations between insulin resistance and the variables of ankle control(${\beta}=-1.05$, p<.05) and low extremity tactile sensations(${\beta}=-1.82$, p<.05).

Relationships between Social Support and Social Image Concerns in Turkish Women with Breast Cancer

  • Ozkaraman, Ayse;Culha, Ilkay;Fadiloglu, Zehra Cicek;Kosgeroglu, Nedime;Gokce, Serap;Alparslan, Guler Balci
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.5
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    • pp.1795-1802
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    • 2015
  • Background: Breast cancer is one of the most common cancer types in women and is amongst the most devastating and stressful events in the life of women. The external appearance of breast cancer patients usually changes due to the surgical and/or medical therapies used. An association may be found between social support perception and social appearance anxiety in patients with breast cancer in the period after mastectomy. Therefore, this study investigated the social appearance anxiety and social support status in women with breast cancer in our country. Materials and Methods: A descriptive cross-sectional study was conducted in breast cancer patients undergoing treatment or follow-up in Medical Oncology and General Surgery departments. Results: The mean age of the participants was $51.13{\pm}8.48$ years (range, 24-74 years) with nearly half of the patients (40.6%) aged 40-50 years. Of the patients, 39.1% had stage 3 breast cancer. The mean score on Cancer Patient's Social Support Scale (CPSSS) was $134.85{\pm}9.35$, and there was a significant difference in CPSSS total scores betweena the age groups, educational levels, self-reported income levels and stage of disease (p<0.05). The mean Social Image Anxiety Scale (SIAS) score was found to be $34.30{\pm}9.35$ (min:16, max:66) in women participating in this study. The CPSSS and SIAS scores of the participants were inversely correlated, and the SIAS score was found to decrease with the increasing CPSSS score but with no statistically significant difference (r=-0.110, p=0.217). Conclusions: Social appearance anxiety is higher in the patients with poor social support.

Motional kinematics of Frozen-thawed Korean native cattle semen use of computer aided semen analysis(CASA) system (컴퓨터 정액자동분석에 의한 동결융해 한우 정액의 운동특성 연구)

  • Lee, Kang-nam;Lee, Byeong-chun;Kim, Jung-tae;Park, Jong-im;Shin, Tae-young;Hwang, Woo-suk
    • Korean Journal of Veterinary Research
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    • v.38 no.4
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    • pp.898-908
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    • 1998
  • The aim of this experiments were to assess the time-interval change of motional characteristics in frozen-thawed semen of Korean native cattle (KNC) by using computer aided semen analysis (CASA) technology. Twenty-six KNC frozen semen straws were obtained from Korean KNC improvement department, livestock improvement main division, national livestock cooperatives federation in Korea. Specimens were allowed to thaw at $37^{\circ}C$ for 30 sec in water bath. Semen analysis was performed on semen image analysis system (SIAS, Medical supply, Korea) adjusted to the gate settings and used the semen droplet ($5{\mu}l$) placed on Makler counting chamber (Sefi medical instrument, Israel) prewarmed at $37^{\circ}C$. The same person used the same micropipette to fill the Makler counting chamber. A total of 150 or more of sperms were analysed in each specimen by a single trained person by scanning at least 5 to 10 fields. The measurement parameters in SIAS were as follows ; frame rate = 30 frames per sec, image capture = 1 sec, minimum motile speed = $10{\mu}m/s$, maximum countable sperm number = 400. Statistical analysis was done by Student t-test with use of the Sigma plot program on a IBM personal computer. The dancemean(DNM) and hyperactivated sperm(HYP) of frozen-thawed KNC semen kinematics were significantly decreased(p < 0.05) after 10 min of incubation at $37^{\circ}C$ water bath. But, wobble(WOB) of same sample semen was significantly increased(p < 0.05) after 10 min of incubation and significantly decrease(p < 0.05) after 60 min of same incubation. And, after 30 mim of incubation, significantly differences were found most of motion kinematics, motifity(MOT), curvilinear velocity(VCL), straight line velocity(VSL), average path velocity(VAP), amplitude of lateral head displacement(ALH), beat cross frequency(BCF), mean angular displacement(MAD), dance(DNC), on same sample semen. The DNM of KNC semen sample was variable kinematics after 30 min of incubation. Also, the linearity(LIN) and straightness(STR) was significantly decreased(p < 0.05) from 60 min of incubation. In conclusion, the AI within 30 min after thawing of frozen semen can be an effective method for obtaining high fertility rate in KNC reproductive program.

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Study on The WEB GIS System Development of the Distribution Facilities Management (공가설비 관리용 WEB GIS 시스템 개발에 관한 연구)

  • Lee, Dong-Yeop;Kim, Dong-Sik
    • Proceedings of the KIEE Conference
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    • pp.229-231
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    • 2008
  • 본 논문에서는 배전 공가설비인 통신케이블 및 기타 통신설비의 관리에 있어 종합적인 정보를 제공할 수 있도록 하는 Web GIS시스템을 구현하였다. 현재 우리나라의 통신망은 세계적으로 관련 컨텐츠 사업의 시험무대라고 일컬어질 정도로 광범위하고 빠른 네트워크를 구성하고 있다. 이러한 빠른 통신망의 확장은 에너지의 근간인 전력망을 활용하고 있기에 가능하였다고 해도 과언이 아니다. 바로 기존 전력설비에 수많은 통신 회선이 공가 되어 운영되어 질 수 있었기 때문이다. 이는 공익성을 우선시하여 운영되어지고 있는 전력사업과 그동안 정보통신사업 육성이라는 정부시책이 맞물려 통신사업자의 빈번한 공가설비 신설 요청이 있었기 때문에 가능하였다. 무엇보다 통신사업자들의 무분별한 경쟁으로 최근 무단 공가설비가 늘어남으로써 전력회사는 통신공가설비관리에 많은 어려움을 겪고 있다. 이러한 문제점을 해소하기 위해 본 논문에서는 GE에너지사의 SIAS(Samllworld Internet Application)를 이용하여 기존에 한국전력에서 운영하고 있는 NDIS(New Distribution Information System)공가 관리 시스템과 상호연동 될 수 있도록 해주는 Web GIS 기반의 배전 공가설비 정보관리 시스템 개발에 관하여 연구 하게 되었으며 이를 운영함으로써 각 통신 사업자들 간의 정보공유와 무단 통신 공가 설비의 근절 및 보다 효율적인 공가설비 운영이 가능 할 것이다.

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Development of Selection Model of Subway Station Influence Area (SIA) in Seoul City using Chi-square Automatic Interaction Detection (CHAID) (CHAID분석을 이용한 서울시 지하철 역세권 지가 영향모형 개발)

  • Choi, Yu-Ran;Kim, Tae-Ho;Park, Jung-Soo
    • Journal of the Korean Society for Railway
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    • v.11 no.5
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    • pp.504-512
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    • 2008
  • In general, based on criteria of subway law, radius 500m from subway station is defined as SIA (Subway Station Influence Area). Therefore, in this paper, selection models of SIA are developed to identify appropriate SIA for specific legions in Seoul metropolitan city based on CHAID analysis. As a result, following outputs are obtained; (1) walking distance from subway station is the most influential factor to define SIA (2) SIAs vary with regions (i. e. Gangnam area: 767m, Gangbuk area: 452m), and (3) walking distance from subway station is influential to land price of SIA. In addition, in Gangnam, the structure of land price of the closest section has a polynomial trend curve rather than linear compared in comparison with other sections. Therefore, it is desirable for current definition of SIA (radius 500m from subway station) to be redefined to reflect characteristics of land use and walking distance according to each region respectively.

A Study on the Educational System Development for Distribution Design Using Web-GIS (Web-GIS를 활용한 배전설계 교육용 시스템 개발에 관한 연구)

  • Lee, Dong-Yeop;Kim, Dong-Sik
    • Journal of the Korean Association of Geographic Information Studies
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    • v.13 no.1
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    • pp.35-49
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    • 2010
  • KEPCO(Korean Electric Power Corporation) is now operating an incorporated system for designing and maintenance of electric power facilities called NDIS (New Distribution Information System). Given the structure of the nation which exclusively permits establishment of new electric facilities and maintenance, expertise (skilled knowledge) about the related system on the part of electric engineers is very important. But in the view of education and training, it is a reality that current offline ways of education based on application for educational courses at the KEPCO Academy, an education organization under KEPCO, are unsatisfactory in efficiency and availability to related engineers. Therefore, We realize that a simulation design education system which guarantees an easy access is required to make the best of the existing system NDIS. For this purpose the present work is a study on the development of a simulation education system to make local based NDIS real on the web, which enables related engineers to practice designing and get feedback of the result.

Studies on Characteristics and Freezing Tolerance of Spermatozoa in Jindo Dog (진도개 정액의 연령별 성상 및 동결성에 관한 연구)

  • Choil, Sun-Ho;Kim, Sung-Jae;Cho, Sang-Rae;Choe, Chang-Yong;Son, Jun-Kyu;Kim, Jong-Suk;Oh, Suk-Il;Park, Byung-Jin;Kim, Sang-Hyun
    • Reproductive and Developmental Biology
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    • v.34 no.3
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    • pp.253-256
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    • 2010
  • This study was performed to investigate the characteristics within ages and freezing tolerance of spermatozoa in Jindo Dog. Experimental animals were selected 12 herds within 1~8 year's old and collected semen for 2 times in a week. Collected semen was evaluated whole volume and sperm number with CASA system (SIAS, Medical Supply, Korea). Then seminal plasma were separated and diluted with modified Tris-egg yolk extender and added 4, 6 and 8% glycerol for 4 times to final concentration and equilibrated for 1.5 hrs. Before and after freezing, equilibrated semen were evaluated the survival rates. Total volume of sperm at 1~2 year old group is as $5.2{\times}10^8\;cells/ml$ largest and there were no significance among groups. The motility of 1~2 year old group is highest as 90.9% and there were significance among groups. Abnormal sperm showed similar among groups. The survival rate in terms of pre-freezing and post-freezing were decreased all levels of glycerol and reveled 87.0% to 64.5% in 4%, 87.5% to 51.9% in 6% and 73.4% to 29.7% in 8%, there were significant difference among the groups (p<0.05). These results suggest that the optimal sperm-freezing methods in Jindo Dog are utilized with modified Tris egg-yolk extender with 4% glycerol and were improve the reproductive activity by these methods.