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달리기 질주속도 체감 및 질주동작 변용에 영향을 미치는 체력적 요인분석 : on the Upper Limbs
이승훈,신범철,이일구 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6
The purpose of this story was to clarify the physical fitness factors influencing the decrease in speed and the change of motion during running with reference to the role of upper limbs. The subjects were twelve track and field athletes(decathletes). Running speed and kinematics parameters were obtained at the first phase and the final phase during the running with maximal effort. The subjects were examined Wingate anaerobic test(pedaling and arm cranking) and isokinetic muscular endurance test on three joints (shoulder, Knee and hip). The results were summarized as follows; 1) The higher anaerobic endurance capacity in arm cranking was, the smaller the reduction of running speed between the first phase and the final phase of running was. 2) There was significant correlation between the amount of difference about minimum hip angle and the muscular endurance rate of shoulder flexion(p<0.05). These results suggest that the anaerobic endurance capacity of upper limbs influences the decrease in running speed and the change of running motion during running. In addition, it is necessary to build up the anaerobic endurance capacity of not only lower limbs but also upper limbs in running.
A Study on the novel LILVTSCR ESD Protection Circuit for High-Speed ICs
Seung-Bum Yuk,Jung-Man Son,Jin-Keun Koo,Jin-Yeong Kang,Yong-Seo Koo 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
A novel ESD protection device, namely, Lachup Immunity Low Voltage Triggered SCR, is suggested for high speed I/O interface. Proposed device can reduce latch up phenomenon than conventional LVTSCR in normal operating condition as structure that PMOS is inserted on conventional LVTSCR's nwell inside. The electrical characteristic of the device has been experimentally studied by numerical simulation(TMAMEDICI device simulator) Also, the device was fabricated using 90nm CMOS process and its electrical characteristics and robustness were measured experimentally. In the result, LILVTSCR has trigger voltage of 3.2 ~ 7.5 and holding voltage of 2.3 ~ 3.2 V, according to change of gate length of NMOS and PMOS. And it has a IEC ESD robustness of 2㎸,7.5A(IEC61000-4-2).
Gold-Catalyzed Unexpected Ring Transformation of Pyrimidodiazepine Derivatives
Koo, Jaeyoung,Kim, Jonghoon,Park, Seung Bum American Chemical Society 2017 ORGANIC LETTERS Vol.19 No.2
<P>Pyrimidodiazepine derivatives underwent an unexpected gold-catalyzed retro-Mannich-type carbon-carbon bond cleavage and intramolecular nucleophilic cyclization. The pyrimidodiazepines bearing an alkyne moiety showed novel orthogonal reactivity in the presence of a gold catalyst, as opposed to the alkynophilicity that is commonly observed with gold catalysts. The ring transformation reaction of pyrimidodiazepines probably proceeds through an acyclic iminium intermediate. The potential of this synthetic method for the skeletal diversification of pyrimidine-containing macrocycles was also demonstrated.</P>
( Seung Young Kim ),( Joo Hee Park ),( Kwang Seok Kim ),( Chang Bum Bae ),( Ji Kyoung Lee ),( Sang Yoon Chung ),( Sang Joon Seo ),( Young Kul Jung ),( Jong Jin Hyun ),( Sung Woo Jung ),( Ja Seol Koo ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: Since the effi cacy of the standard triple therapies for Helicobacter pylori ( H. pylori) eradication has decreased, novel antibiotic regimens have been introduced. The aim of this study was to compare the effi cacy of non-bismuth quadruple therapy with sequential therapy for the fi rst-line H. pylori eradication in Korea and to evaluate the effect of resistance to clarithromycin on the effi cacy of each treatment regimen. Methods: Fifty-fi ve patients with proven H. pylori infection using dual priming oligonucleotide (DPO)-PCR kit were randomly assigned to one of 2 regimens: amoxicillin 1000mg with clarithromycin 500 mg, metronidazole 500 mg, and pantoprazole 40mg twice daily for 10 days (non-bismuth quadruple therapy) or amoxicillin 1000mg with pantoprazole 40mg twice daily for 5 days followed by clarithromycin 500mg with metronidazole 500mg, and pantoprazole 40 mg twice daily for 5 days (sequential therapy). The success of H. pylori eradication was evaluated 4-5 weeks after completing treatment. Results: Eradication rates were 96.3% in the concomitant therapy and 81% in the sequential therapy (per protocol), but the difference was not statistically signifi cant (P = 0.153). Sixteen strains (29.1%) showed clarithromycin resistance. In mutant strains, the eradication rate was 68.8% (11/16) (ITT analysis) and the eradication rate of non-bismuth quadruple therapy was signifi cantly higher than sequential therapy (84.6% (11/13) vs. 0% (0/3), P=0.018). Conclusions: Non-bismuth quadruple therapy led to a non-statistically advantage over sequential therapy, especially in mutant strains in Korea.