• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.219-221
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• 2005

Various adjustment devices which present automobile uses electric motion motor of reducer built-in type for user's convenience are increasing. The example are seat control motor, sunroof motor, power windows motor etc. To get low noise, high effectiveness special quality in automobile DC motor of reducer built-in type, reducer department's transmission efficiency and noise, vibration quality are very important. The reducer used to DC motor of automobile reducer built-in type use worm gear for enough torque and proper number of rotation. We need optimization design technology of deceleration module including worm gear and housing for reducer development that have special quality of good quality.

• Parasites, Hosts and Diseases
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• 제53권6호
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• pp.719-724
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• 2015

Nematomorpha, horsehair or Gordian worms, include about 300 freshwater species in 22 genera (Gordiida) and 5 marine species in 1 marine genus (Nectonema). They are parasitic in arthropods during their juvenile stage. In the present study, the used gordian worm was found in the feces of a dog (5-month old, male) in July 2014. Following the worm analysis using light and scanning electron microscopes, the morphological classification was re-evaluated with molecular analysis. The worm was determined to be a male worm having a bi-lobed tail and had male gonads in cross sections. It was identified as Gordius sp. (Nematomorpha: Gordiidae) based on the characteristic morphologies of cross sections and areole on the cuticle. DNA analysis on 18S rRNA partial sequence arrangements was also carried out, and the gordiid worm was assumed to be close to the genus Gordius based on a phylogenic tree analysis.

• Bulletin of the Korean Chemical Society
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• 제31권8호
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• pp.2265-2271
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• 2010

In this study, wormorm-like polymeric micelles were construted from poly(L-lactic acid)-b-poly(ethyelen glycol) (PLLA-b-PEG) block copolymers via worm-like (or cylindrical) self- assembly that consisted of a relatively long PLLA block ($M_n$ 7K Daltons) at the core and a relatively short PEG block ($M_n$ 2K Daltons) as the shell. Several cancer-targeting moieties (such as folate, cobalamin, and cyclic arginine-glycine-aspartic (RGD) peptide) were chemically coupled with the succinylated or maleimided PEG block of PLLA-b-PEG to act as a cancer cell-specific targeting ligand for breast cancer. The worm-like micelles with muplite cancer cell-specific ligands proved to be successful in recognizing different breast cancer cells at once. This has the potential to aid in cancer-specific drug delivery and to be used as an effective treatment for breast cancer.

• 한국동물위생학회지
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• 제39권4호
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• pp.271-276
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• 2016

Horsehair or gordian worms (Nematomorpha) were identified with 22 genera (Gordiida) and 5 marine species (Nectonema) until now. During juvenile phase in development, they gain parasitic activity in arthropods. In this study, a gordian worm was detected in the feces of a dog living in Nonsan-si, Chungcheongnam-do, Korea. Using this worm, we evaluated the morphological characteristics by light microscopic analysis. Furthermore, the morphological classification was re-evaluated by scanning and transverse electron microscopes. The worm was determined that it is male adult having a bi-lobed tail and male gonads in cross sections. Based on the morphological characteristics including cross sections of body and areole on the cuticle, the parasite was also identified as Gordius sp. (Nematomorpha: Gordiidae).

• 동력기계공학회지
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• 제20권1호
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• pp.57-62
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• 2016

In this study, design the core part of the driving of the robot. The power of the driving is window motor for automobiles obtained by using a method of directly to the motor shaft of the worm gear type. The decelerator consists of a worm gear to receive power from the motor shaft, Helical gear contact to worm gear, a pinion gear to be connected in line with the helical gear, and an output shaft to be engaged to the pinion gear. Drive system by using the power from the motor shaft based on the deceleration gear designed by the gear ratio set by the gear teeth increases the torque.

• Parasites, Hosts and Diseases
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• 제37권1호
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• pp.21-26
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• 1999

The growth and development of Gymnophalloides seoi were studied in C3H/HeN mice and effects of immunosuppression of the host on the worm development were observed. Two hundred metacercariae of G. seoi were orally administered to each mouse, and worms were recovered on days 1, 3, 5, 7, 14 and 21 post-infection (PI). The worm recovery rate was significantly higher in immunosuppressed (ImSP) mice than in immunocompetent (ImCT) mice except on days 1 and 3 PI. The worms attained sexual maturity by day 3 PI with eggs in the uterus, and worm dimensions and the number of uterine eggs continuously increased until day 14 PI in ImSP mice. Worms recovered from ImSP mice were significantly larger in size than those from ImCT mice on days 1 and 3 PI, and the number of uterine eggs was significantly larger in ImSP mice on days 5 and 7 PI. Genital organs such as the ovary, testes, and vitellaria, that were already developed in the metacercarial stage. grew a little in size until day 14 PI. The results show that the C3H/HeN mouse is, though not excellent, a suitable laboratory host for G. seoi.

• 농촌의학ㆍ지역보건
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• 제16권1호
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• pp.61-69
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• 1991

Serodiagnosis of Clonorchis sinensis infections will probably be a first choice tool for screening of clonorchiasis in a future because of increasing difficulties in collection and examination of stools. The sensitive test such as ELISA can he used effectively. However there are some limitations in serological diagnosis for the detection of serum antibody. One of the major problems is the non-specificity of the antigens which produce cross reaction with other helminthic infection sera. To solve this problem. many investigators have tried to purify the antigens used. In this study, we determined the antigenic profile of the crude saline extract antigen of C. sinensis at early developmental stage based on SDS-PAGE and immunoblotting techniques for the purpose of understanding the nature of C. sinensis worm antigen The following results were obtained : 1) The SDS-PAGE showed many protein hands ranging from 10Kd to 91Kd relative molecular weight. Among them, 66, 46, 40, 33, 27, 24, 16, 14 and 10Kd bands were observed as a principle bands. The protein components of C. sinensis changed chronologically during their early developmental period. 44Kd band was stained unclearly in antigen of 2 weeks worm, but changed to concentrated state in antigen of 5 weeks worm. 35Kd band was found in antigen of 2 weeks worm, however this band was disappeared in antigen of 5 weeks worm. 22Kd band also lost its staining property gradually. 2) In spite of differences in antigenic profile, there was no differences in the data obtained by microplate ELISA using each antigen preparation. Absorbance value began to rise in between 2 to 3 weeks after infection. 3) By EITB. serum antibody recognized major protein bands with molecular weight of 91, 85, 63, 46, 40, 33, 24, 14 and 10Kd hand respectively. Among them 66, 33, 17 and 14Kd bands were observed as non-specific band because they reacted even in normal control sera. Generally, gradual increase of positive reactions were observed as the infection period of C. sinensis was prolonged. In other hand, the reaction of 10Kd hand did not occurred when 26th week sera was tested. 4) The positive reactions using antigens of 2 weeks worm, especially on 40 and 24Kd bands, were most strong and sharply demarcated compared to those of 3~5 weeks worm antigen.

• 한국축산식품학회지
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• 제28권5호
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• pp.521-528
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• 2008

본 연구는 누에분말 및 누에동충하초분말을 첨가하여 제조한 돈육 패티의 $5^{\circ}C$ 냉장저장 기간(0, 3, 6, 9일)동안의 품질변화를 평가하기 위해 실시하였다. 저장 6일차까지 처리구가 대조구보다 유의적으로 높은 pH값을 보였으며 육색의 경우 누에분말과 누에 동충하초 분말 첨가비율이 높을수록 L과 a값은 감소했으며 b값은 증가하였다(p<0.05). 누에분말과 누에 동충하초 분말 첨가가 보수력에는 크게 영향을 미치지 않는 것으로 나타났으며 T2 처리구에서 낮은 가열감량을 보여 0.4%의 누에분말이 가열감량을 억제하였다(p<0.05). 지방산패도는 누에분말과 누에동충하초분말 첨가구 및 혼합 첨가구에서 모두 대조구보다 낮은 수준을 보였다(p<0.05). 그러나 누에분말과 누에동충하초분말 처리간의 뚜렷한 차이는 보이지 않았다. 돈육 패티의 관능적 특성은 저장기간이 증가함에 따라 감소하였으나 풍미의 경우 저장초기에는 처리구의 기호도가 높았으나 저장기간이 증가하면서 차이는 보이지 않았다. 냄새도 대조구와 차이가 없었으며 종합적기호도에서도 저장초기에 대조구보다 높은 기호도를 보였으나 저장기간이 증가하면서 대조구에 비해 높거나 차이가 없었다. 누에분말과 누에동충하초분말 처리구간의 뚜렷한 기호도 차이는 보이지 않았다. 따라서 누에 및 누에동충하초분말은 돈육 패티의 pH값을 증가시키며 가열감량과 지방산패도를 억제시켰으며 보수력과 관능적 특성에도 부정적인 영향을 보이지 않아 추후 가공육제품의 첨가제로의 이용 가능성을 나타내었다.

• Parasites, Hosts and Diseases
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• 제35권2호
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• pp.95-104
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• 1997

서울주걱흡충의 충체 항원의 유래 부위를 알기 위하여 면역전자현미경법으로 관찰하였다. 충체 조항원으로 면역시킨 마우스 혈청을 분리하여 충체 조직과 반응시켰다. 조직 부위 중 조직융해구 세포의 과립세포질세망 저정낭의 정자 사이 조직과 정자머리 주위. 맹장의 미세융모 난황이 면역된 마우스 혈청과 강하게 반응하였다. 감염 마우스 혈청과는 난황 과립이 강하게 반응하고. 맹장의 미세융모가 악하게, 다른 부위는 매우 약하게 반응하였다. 고러므로 조직융해구. 저정낭. 맹장. 난황이 조항원의 유래 부위이고. 충체분비물의 항원은 난황에서 유래하는 것이 가장 강하게 작용하는 것으로 생각한다.

• International Journal of Automotive Technology
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• 제6권5호
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• pp.461-466
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• 2005

With the growing traffic density and increasing comfort requirements, the automation of the drive train has gained importance in vehicles. The automatic clutch actuation relieves a driver especially in urban and stop-and-go traffic environments. In this paper, an electro-mechanical actuator for clutch-by-wire (CBW) system is implemented as the first stage for the development of automated manual transmissions. The prototype of the automatic clutch actuator is designed systematically, which is composed of the electric motor, worm and worm wheel, and crank mechanism. A test rig is developed to perform the basic function test for the automatic clutch actuation. The developed prototype is validated by the experimental results performed on the test rig.