http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Fatigue Crack Growth Behavior in Ultrafine Grained Low Carbon Steel
Ho,Kyung Kim,Myung-Il Choi,Chin-Sung Chung Dong-Hyuk Shin 대한기계학회 2002 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.16 No.10
Ultrafine grained (UFG) low carbon (0.15 wt.% C) steel produced by equal channel angular pressing (ECAP) was tested for investigating the effect of load ratio on the fatigue crack growth rate. Fatigue crack growth resistance and threshold of UFG steel were lower than that of as-received coarse grained steel. It was attributed to the less tortuous crack path. The UFG steel exhibited slightly higher crack growth rates and a lower △K_th with an increase of R ratio. The R ratio effect on crack growth rates and △K_th was basically indistinguishable at lower load ratio (R>0.3), compared to other alloys, which indicates that contribution of the crack closure vanishes. The crack growth rate curve for UFG steel exhibited a longer linear extension to the lower growth rate regime than that for the coarse grained as-received steel.<br/>
Therapeutic outcomes of methotrexate injection in unruptured interstitial pregnancy
( Myung Joo Kim ),( Jae-ho Cha ),( Hyo Sook Bae ),( Mi Kyoung Kim ),( Mi-la Kim ),( Bo Sung Yun ),( You Shin Kim ),( Seok Ju Seong ),( Yong Wook Jung ) 대한산부인과학회 2017 Obstetrics & Gynecology Science Vol.60 No.6
Objective To examine the therapeutic outcomes of methotrexate (MTX) in the treatment of unruptured interstitial pregnancy. Methods We reviewed the medical records of patients who were diagnosed with interstitial pregnancy and received MTX as first-line treatment between January 2003 and July 2014 at CHA Gangnam Medical Center. The treatment success rates and subsequent pregnancy outcomes were examined. Results Ninety-seven patients were diagnosed with interstitial pregnancy between January 2003 and July 2014. Of them, 38 initially received MTX treatment. The diagnosis was made at a median of 6<sup>+3</sup> weeks (5<sup>+0</sup> to 11<sup>+3</sup> weeks). Thirty patients received a systemic MTX injection, while the other 8 received a local MTX injection. Systemic treatment composed of an 8-day alternating MTX regimen, single-dose regimen, or high-dose regimen (100 mg/m<sup>2</sup> + 200 mg/m<sup>2</sup> intravenously over 12 hours). The local injection consisted of a direct MTX injection into the gestational sac with or without systemic MTX injection. Twenty-one patients (55.3%) were successfully treated with MTX. However, MTX therapy failed in 17 patients (44.7%), who required surgery. Mode of MTX treatment was the only predictive variable of MTX treatment success (P=0.039). Treatment success was seen in 7 of 8 patients (87.5%) in the local MTX group vs. 14 of 30 patients (46.7%) in the systemic MTX group. After treatment, 13 patients attempted a successive pregnancy; of them, 10 patients had a confirmed clinical pregnancy and healthy live birth. Conclusion Combined MTX treatment including a local injection might be an initial approach to the treatment of interstitial pregnancy.
Characterization of CBF/DREB1 Gene Family in Brassica rapa
Sang-Choon Lee,Myung-Ho Lim,Jae-Gyeong Yu,Beom-Seok Park,Tae-Jin Yang 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
The C-repeat/dehydration-responsive element binding transcription factors (CBF/DREBs) are involved in an important pathway for abiotic stress-response in plants. We have identified CBF/DREB1 gene family from Brassica rapa whole genome sequence and designated them as BrDREB1s. They contain conserved nucleus localization signal, AP2/EREBP domain, and CBF/DREB1 signature, as other known plant CBF/DREB1s. By comparative genomics, we found that nine of ten BrDREB1 genes were present in seven macro-synteny blocks co-linear to four Arabidopsis counterpart blocks and also genomic organizations of their flanking regions were very similar to those for co-linear Arabidopsis CBF/DREB1 genes. In particular, three genes, BrDREB1A, BrDREB1B1, and BrDREB1C1, were closely located within a 59 kb genomic sequence, which was similar to that of their Arabidopsis counterpart genes. However, the genomic regions of those BrDREB1 genes contained additional sequences, compared to their co-linear regions in A. thaliana. The expression of BrDREB1 genes under abiotic stresses were examined by searching microarray database and by RT-PCR analysis. All of eight genes tested were highly up-regulated during cold treatment and some of them were also responsive to salt, drought, and ABA treatment. Taken together, these results indicate that CBF/DREB1-mediated stress signaling pathway is also functioning in B. rapa. On the other hand, differences in genomic organization and gene number for CBF/DREB1 are thought to cause different response to stress between B. rapa and A. thaliana. In this presentation, we will introduce more detailed results for CBF/DREB1 gene family in B. rapa.
Case Report : Psoriatic Onycho-pachydermo-periostitis of the Fingertips: A Report of Two Cases
( Myung Il Park ),( Bo Yeon Kim ),( In Park ),( Ki Tae Kwon ),( Dong Joo Shin ),( Gun Woo Kim ),( Sung Ho Kim ),( Seung Woo Han ) 대한류마티스학회 2015 대한류마티스학회지 Vol.22 No.1
Psoriatic onycho-pachydermo-periostitis (POPP) causes severe nail dystrophy, painful soft tissue swelling, and marked periosteal reaction of the involved distal phalanx. There are few reports of POPP involving the great toe. We report on 2 cases of POPP involving the fingertips. A 60-year-old woman presented with fusiform swelling of her right 4th fingertip with severe tenderness, and her fingernails and toenails had varying degrees of onycholysis. She had mixed multiple erosions and meta-epiphyseal periostitis at the distal phalanx of the right 4th finger but was treated successfully with methotrexate and cyclosporine. A 39-year-old woman presented with painful swelling of the left 2nd and 5th fingertip, psoriatic lesions on the knees and soles of the feet, and onycholysis without reactive periostitis of the left 2nd and 5th fingers. She was treated successfully with cyclosporine. Despite its rarity, POPP should be considered when diagnosing arthritic or infectious conditions affecting the distal interphalangeal joint. (J Rheum Dis 2015;22:45-50)