• Title/Summary/Keyword: YoungChu

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Fc fusion to Glucagon-like peptide-1 inhibits degradation by human DPP-IV, increasing its half-life in serum and inducing a potent activity for human GLP-1 receptor activation

  • Kim, Dong-Myung;Chu, Seoung-Ho;Kim, Se-Mi;Park, Young-Woo;Kim, Sung-Seob
    • BMB Reports
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    • v.42 no.4
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    • pp.212-216
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    • 2009
  • The short in vivo half-life of GLP-1 prevents it from being used clinically. This short half-life occurs because GLP-1 is rapidly degraded by dipeptidyl peptidases such as DPP-IV. To overcome this obstacle, a GLP-1/Fc was constructed and evaluated to determine if it was degraded by DPP-IV and in serum. When the degradation of GLP-1/Fc by human DPP-IV and rabbit serum was compared with that of GLP-1 it was found to be reduced by approximately 5- and 4-fold, respectively. Furthermore, GLP-1/Fc showed a potent activity for human GLP-1 receptor activation ($EC_{50}$ approximately 6 nM). Taken together, these results indicate that GLP-1/Fc may have an extended half-life in vivo that occurs as a result of inhibition of degradation by human DPP-IV. Due to the extended half life, GLP-1/Fc may be useful for clinical treatments.

Absorption Properties of Chitosan and Nano Silver Composite knit Fabrics Dyed with Chrysanthemum indicum Linn Extract (감국 추출액으로 염색한 키토산/나노실버 복합편성물의 염착특성)

  • Chu, Young-Ju
    • Fashion & Textile Research Journal
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    • v.12 no.6
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    • pp.837-842
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    • 2010
  • This study examines the dyeability, light fastness, washing fastness, and antibacterial activity of chitosan and nano silver composite knit fabrics dyed with extracted solution from Chrysanthemum Indicum Linn. The results show that ${\Delta}E$ values of chitosan and nano silver composite knit fabrics were higher than cotton 100% knit fabrics in dyed condition with extracted solution from Chrysanthemum Indicum Linn, and mordant treatments influenced the chrominance change. Chrysanthemum indicum Linn confirmed that this could be a polygenetic colors. ${\Delta}E$ values of post-mordant treatments knit fabrics were higher than pre-mordant treatments knit fabrics in dyed condition with extracted solution from Chrysanthemum Indicum Linn., and mordant treatments method influenced the chrominance change. The dyeability of chitosan and nano silver composite knit fabrics was increased by mordant treatment. The fastness of the chitosan and nano silver composite knit fabrics was better than cotton 100% knit fabrics. In the result of antibacterial activity, the bacterial reduction rate of chitosan and nano silver composite knit fabrics was 99.9% to Staphylococcus aureus and Klebsiella pneumoniae.

Morphological Characteristics of Seeds in Medicinal Plants of Umbelliferae (산형과 약용작물 종자의 형태적 특성)

  • Eun Il, Lee;Young Ok, Ko;Chu Ho, Choi;Jong Ki, Lee;Seok Hyeon, Kim
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.42 no.4
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    • pp.429-434
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    • 1997
  • The most typical morphological characteristics of seeds of eight species in Umbelliferae are summarized as follows: 1. The common characteristics of seeds in Umbelliferae were bi-partite fruits, compound of 2-seeds, (fruitlet) oil canals and funiculus or carpaphore. 2. Seed shape of Umbelliferae were oblong or elliptic and ovate; seed colors were yellow, pale yellow or brown, dark brown or black. 3. Seed size ranged from 2 to 7mm in length and 2∼5mm in width. Angelica dahurica bore the largest seed while Ligusticum acutilobum showed the smallest. The 1000-seed weight ranged from 1. 7g in Bupleurum falcatum to 3.9g in Angelica gigas.

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Fine Needle Aspiration Cytology of Diffuse Sclerosing Variant of Papillary Carcinoma of the Thyroid - A Case Report - (갑상선의 미만성 경화성 변종 유두상 암종의 세침흡인 세포학적 소견 - 1예 보고 -)

  • Kim, Joon-Mee;Min, Soo-Kee;Chu, Young-Chae;Kim, Mi-Rim;Kim, Kyung-Rae
    • The Korean Journal of Cytopathology
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    • v.11 no.1
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    • pp.47-52
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    • 2000
  • Diffuse sclerosing papillary carcinoma(DSPC), a variant of papillary carcinoma of the thyroid, is characterized by diffuse involvement of one or both thyroid lobes, and histologic features such as prominent sclerosis, intense lymphocytic infiltrate, numerous psammoma bodies, and squamous metaplasia together with the characteristic cytoarchitectural pattern of classical papillary carcinoma. We experienced a case of fine needle aspiration cytologic(FNAC) findings of DSPC, which was confirmed by histologic examination of the thyroidectomy specimens. The patient was 26 years old female who presented with diffuse firm enlargement of the thyroid gland with enlargement of many cervical lymph nodes. FNAC smears showed numerous psammoma bodies, many lymphocytes, metaplastic squamous cells, absence of stringy colloid, and epithelial cells showing classical features of papillary carcinoma, such as nuclear grooves, intranuclear unclusions, and ground glass chromatin pattern.

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A case study of high school student with UL-syndrom(鬱證) who has treated by auto gens traning. (자율훈련법을 시행한 고3수험생 울증(鬱證)환자 치험1례)

  • Chu, Ching-Nai;Kim, Ryo-Ju;Cha, Rye-Jin;Lee, Ji-Won;Seo, Young-Min;Park, Se-Jin
    • Journal of Oriental Neuropsychiatry
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    • v.19 no.3
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    • pp.245-254
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    • 2008
  • This study was designed to evaluate the effects of an Schultz's autogens traning and herbal medicine with various scales on symptoms of UL-syndrom(鬱證). We treated UL-syndrom(鬱證) with Schultz's autogens traning, including herbal medicine and we evaluated the clinical progress of the patient using BDI. After treatment about 2-month, the chief complaint and most of symptoms were subsided and improved. BDI score were decreased 32 to 10. This study suggests that Schultz's auto gens traning and herbal medicine is significantly effective in the treatment of UL-syndrom(鬱證).

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A Case Report of Binge Eating due to Disharmony of the Liver & Spleen(肝脾不和) and Retention of Undigested Food(食積) (간비불화(肝脾不和)와 식적(食積)으로 변증된 신경성 폭식증 치험 1례)

  • Kim, Hyo-Ju;Chu, Ching-Nai;Lee, Ji-Won;Cha, Hye-Jin;Seo, Young-Min;Park, Se-Jin;Jeong, A-Rong
    • Journal of Oriental Neuropsychiatry
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    • v.19 no.3
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    • pp.255-264
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    • 2008
  • The purpose of this study is to identify the effect on a patient with bulimia nervosa-purging type and depression according to the oriental medical treatment and cognitive-behavioral therapy. In this case, a 28 year-old female patient had a binge eating and reward behaviors for 2 years. This patient was treated with acupunture therapy, Soyo-san for 5 months after cognitive-behavioral therapy for 12 sessions(2 times a week). The result of this research showed that bulimia nervosa with depression was improved by our treatment.

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ED-drilling of WC-Co to Minimize Electrolytic Corrosion on a Workpiece Surface (방전드릴링 시 발생하는 초경합금의 표면전해부식 방지)

  • Song, Ki-Young;Chung, Do-Kwan;Park, Min-Soo;Chu, Chong-Nam
    • Journal of the Korean Society for Precision Engineering
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    • v.26 no.8
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    • pp.47-54
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    • 2009
  • In this study, a simple and effective method was proposed to minimize electrolytic corrosion on the workpiece during ED-drilling using water as a working fluid. The adhesion of a cover plate onto the surface of the workpiece was greatly effective for suppressing electrolytic corrosion during ED-drilling. The experiment revealed that the adhesion of the cover plate prevented corrosion without causing significant changes in machining characteristics. Using the machining method proposed in this paper, electrolytic-corrosion-free holes can be machined without change in the machinery system. By using corrosion-free hole as a start hole for wire EDM, a lead frame die with high quality was fabricated successfully.

Experimental Study on the Composite Beam Strengthened by External Post Tensioning (외부 후긴장으로 보강한 합성보에 대한 실험적 연구)

  • Kim, Gi Bong;Chung, Young Soo;Choi, Hyok Chu;Kang, Bo Soon
    • Journal of Korean Society of Steel Construction
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    • v.10 no.4 s.37
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    • pp.701-708
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    • 1998
  • The application of additional post-tensioning tendons has recently been widely considered and requires very little interference with the existing structure. Several bridges on the national roadway designed as the second class were strengthened by external post-tensioning for the capacity enhancement purpose, but much of that strengthening work was not verified analytically as well as experimentally. This paper examines experimentally the behavior of simple composite steel-concrete beams designed as the second class(DB-18) When they are strengthened with external post-tensioning tendon. Test results show that external post-tensioning increases the ultimate load and the magnitude of tendon force increases the yield load but not the ultimate load.

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The Efficient Transformation of Pleurotus ostreatus using REMI Method

  • Joh, Joong-Ho;Kim, Beom-Gi;Chu, Kyo-Sun;Kong, Won-Sik;Yoo, Young-Bok;Lee, Chang-Soo
    • Mycobiology
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    • v.31 no.1
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    • pp.32-35
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    • 2003
  • Restriction enzyme-mediated integration(REMI) was used to transform uracil auxotrophs of Pleurotus ostreatus to prototrophy. When protoplasts of Pleurotus ostreatus were treated by the reaction mixture containing 10 units of BamHI, the frequency of REMI was about 64 transformants per 1 ${\mu}g$ of DNA. This efficiency was increased by 14.2 times compared with that of the conventional PEG transformation. The optimal condition for REMI of P. ostreatus was achieved when 1 ${\mu}g$ of linearized pTRura3-2 DNA was added into $1{\times}10^7$ protoplasts along with 10 units BamHI. Southern blot analysis revealed that about 50% of transformants examined were caused by REMI event and 30% carried single copy insertion at the genome. This suggested that the REMI method might be a useful tool for efficient transformation and tagging mutagenesis of P. ostreatus.

A Study on the Exoskeleton Robot Operations to Assist the Upper Limbs Power (상지 근력 증강을 위한 외골격 로봇의 동작기법 연구)

  • Choi, Jae-Heung;Oh, Seong-Nam;Chu, Kyong-Ho;Son, Young-Ik;Kim, Kab-Il
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.1918-1919
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    • 2011
  • 상체 지원 외골격 로봇은 크게 인간의 근력을 보조하는 형태와 인간의 근력을 증강하는 형태가 있다. 여기서는 인간의 근력을 증강하는 외골격 로봇을 중심으로 기술하고자 한다. 이러한 외골격 로봇은 팔의 EMG (Electromyograph;근전도) 신호를 측정하는 방법보다는 손의 힘을 직접 감지하는 방법을 통한 팔꿈치와 어깨의 엑추에이터를 구동하는 방식을 취하는 경향이 있다. 본 논문에서도 후자의 방식을 이용하여 손에 작용하는 힘을 분석하여 외골격 로봇을 움직이는 방식을 취하였다. 손의 힘 중에서도 인간을 중심으로 볼 때 위방향과 전진방향의 힘을 분석하기 위하여 2개의 F/T(Force/Torque) 센서를 사용하였으며 팔을 벌리는 동작은 엑추에이터 없이 자유롭게 동작이 가능하도록 설계하였다. 이러한 위방향 및 전진방향 힘의 크기를 팔꿈치와 어깨의 엑추에이터의 동작으로 바꾸어 인간의 동작을 도울 수 있고 힘을 증폭할 수 있는 외골격 로봇을 설계 제작하였다. F/T 센서는 손의 힘을 전기적 신호로 바꾸어주는 로드셀로 이루어지며 손의 힘을 최대한 잘 반영하기 위한 구조를 고안하였다. F/T 센서의 전기신호는 증폭기를 거쳐서 잡음을 제거한 후에 A/D 변환하여 processor에서 처리되어진다.

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