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Bae, Kyung‐,Yul,Lim, Dong‐,Hyuk,Park, Ji‐,Won,Kim, Hyun‐,Joong,Jeong, Han‐,Mo,Takemura, Akio Wiley Subscription Services, Inc., A Wiley Company 2013 Polymer engineering and science Vol.53 No.9
<P><B>Abstract</B></P><P>Acrylic pressure sensitive adhesives (PSAs) have a range of applications in industry, such as medical products, aircraft, space shuttles, electrical devices, optical products, and automobiles, etc. In this study, acrylic PSAs with fluorinated groups were synthesized using 2,2,2‐trifluoroethyl methacrylate (TFMA) under UV radiation. The surface properties and adhesion strength were measured. The results showed that the addition of TFMA reduced the surface energy of the PSAs and improved the adhesion strength. POLYM. ENG. SCI., 2013. © 2013 Society of Plastics Engineers</P>
Bae, Jung Myung,Ahn, Min Young,Harn, Chee Hark,Jeong, Won Joong,Jung, Min,Lim, Yong Pyo,Liu, Jang Ryol 충남대학교 생물공학연구소 1999 생물공학연구지 Vol.7 No.-
The plastid ribosomal protein s16 (rps16) gene was cloned from potato (Solanum tuberosum L. ssp. tuberosum cv De'sire'e) by PCR amplification to obtain a new homologous recombination site of plastid transformation. The potato rps16 genomic clone was 1627 bp in size and the coding region was interrupted by an 859 bp intron. Exon I was 40 bp, encoding 13 amino acids and exonⅡ was 227 bp, encoding a 76 amino acid polypeptide. The nucleotide sequence of the rps16 gene from the "De'sire'e" potato shared perfect identity with the sequence from the "Superior" potato in the coding region. Three nucleotide substitutions, two nucleotide insertions, and one nucleotide deletion were found between the intron sequence of both "De'sire'e" and "Superior" cultivars. The amino acid sequence of the potato rps16 gene showed a high level of identity with rice, maize, tobacco, and mustard (84-94%) and a relatively low level compared with Bacillus stearothermophilus and E. coli (27-28%). Expression of the rps16 gene was strong in chloroplasts and transcripts were detectable in amylopasts, suggesting that the rps16 gene is active in nonphotosynthetic plastids as well as in photosynthetic plastids. These results indicate that the potato rps16 gene can be used as a new homologous recombination site of plastid transformation for potato cultivars.
Joong-Bae Seo,Jae-Sung Yoo,Jee-Won Ryu,Yong-Eun Shin 대한견주관절의학회 2016 대한견주관절학회지 Vol.19 No.4
Background: This study investigated the efficacy and safety of combined subacromial and intravenous patient-controlled analgesia for control of postoperative pain after arthroscopic rotator cuff repair. Methods: Between May 2012 and August 2014, 60 patients who underwent arthroscopic rotator cuff repair with acromioplasty and received patient-controlled analgesia were studied prospectively. Cases were divided into 2 groups: combined subacromial and intravenous infusion group (group A, 30 cases) and solitary intravenous infusion group (group B, 30 cases). The visual analogue scale was used to record the patient’s level of pain every 12 hours during postoperative 72 hours and the following 48 hours after the suspension of patient-controlled analgesia. Results: The mean preoperative visual analogue scale score was 7.8 in group A and 7.6 in group B, and the immediate postoperative visual analogue scale score was 7.9 and 8.1 for each group. At postoperative time (From 12 hours to 72 hours after operation), the scores of combined subacromial and intravenous infusion were significantly lower than those of solitary intravenous infusion. Significant difference in the frequency of supplemental analgesic injections was observed between group A and group B (p=0.008). However, no significant difference in complication rate was observed between the two groups (p=0.562). Conclusions: Combined subacromial and intravenous patient-controlled analgesia after arthroscopic rotator cuff repair is more effective than solitary intravenous infusion without significantly increasing complications. Therefore, combined subacromial and intravenous patient-controlled analgesia could be a effective pain control method.
Joong-Bae Seo,Jong-Pil Kim,Jee-Won Ryu 대한정형외과 스포츠의학회 2014 Arthroscopy and Orthopedic Sports Medicine Vol.1 No.1
Background: The aim of this study was to identify the clinical outcomes after conservative management of partial tears of the upper subscapularis tendon (Pfirrmann class I) in patients who underwent arthroscopic repair of rotator cuff tears. Methods: Of the two hundred and eighty-one patients who underwent arthroscopic rotator cuff repair at our institution between January 2005 and August 2011, fifty-six patients had a subscapularis tendon tear. And among them, twenty-three patients who could be followed up until at least 12 months after operation were evaluated retrospectively. Repair of the subscapularis tendon partial tear was not performed in all patients. We evaluated the range of motion (ROM) of shoulder, muscle power, Korean shoulder scoring system (KSS), American Shoulder and Elbow (ASES) scores, and the visual analog scale (VAS). Results: At 12-months follow-up, range of forward elevation was improved to 148.5o, range of external rotation to 55.4o, and range of internal rotation to the 11th thoracic level. Further, abduction strength was improved to 13.9 kg, external rotation strength to 16.4 kg, and internal rotation strength to 18.4 kg. KSS was improved from 53.0 to 89.4, ASES from 48.4 to 86.6, and VAS from 8.3 to 1.6. There were significant improvements in terms of ROM of shoulder, muscle power, KSS, ASES scores, and VAS (P < 0.05). Conclusion: Clinical improvement was achieved in patients with arthroscopic repair of rotator cuff tears at a short-term follow-up of 12 months when the partial tear in the upper subscapularis tendon (Pfirrrmann class I) that came concomitantly was conservatively managed.
Won-Bum Park,Yong-Woo Kim,Sun-Joong Kim,Youn-Bae Kang 대한금속·재료학회 2023 대한금속·재료학회지 Vol.61 No.9
Wet chemical analysis techniques for four elements (M = As, Pb, Sb, and Sn) in Ag – M binaryalloys were investigated with emphasis on the choice of solvent acid and the characteristic wavelength usedin the ICP-AES (Inductively-Coupled Plasma Atomic Emission Spectrometer) analysis. The elements arerepresentative tramp elements in ferrous scrap. The activity of these elements needs to be increased to removethem efficiently during the molten scrap refining process. The activity of these elements in the molten scrap(molten iron alloy) is usually measured by a chemical equilibration technique with molten Ag. Therefore,performing an accurate and reliable chemical analysis of these elements in the molten iron alloy and themolten Ag alloy is important. Preliminary tests using conventional acids (hydrochloric acid, nitric acid)resulted in unreliable results. In the present study, the proper choice of acids as solvents was investigatedfor each element M in the Ag-M alloys. Several synthesized Ag-M alloys of known compositions were analyzedusing two ICP-AES systems independently, for cross-checking. As and Pb in Ag alloys could be successfullydissolved in the nitric acid-based solution. On the other hand, Sb and Sn in Ag alloys did not dissolve in thenitric acid-based solution completely, leaving some precipitates. It was found that the addition of hydrofluoricacid could resolve this problem. In addition to this, the effect of the mass of the Ag-M alloy and wavelengthselection during ICP-AES analysis on the accuracy and the reproducibility were investigated. An optimizedprocedure for the wet chemical analysis of these elements in Ag-M alloys is reported.
Laparoscopic Para-aortic Lymphadenectomy (LPAL): Standard Surgical Boundary and Technique
( Joong Sub Choi ),( Jaeman Bae ),( Won Moo Lee ),( Un Suk Jung ),( Jeong Min Eom ),( A Ra Koh ) 대한산부인과학회 2016 대한산부인과학회 학술대회 Vol.102 No.-
목적: Teach a new procedure. 방법: We conducted a retrospective chart review of 324 patients with gynecologic malignancies who had undergone LPAL by a single surgical team between November 2003 and May 2015. 결과: Three hundred seventeen patients underwent LPAL as part of their staging, restaging or debulking surgery. Seven patients with isolated para-aortic lymph node recurrence underwent a repeat LPAL. The median age and BMI were 54 years (range 28-81 years) and 26.0 kg/m2 (range 20.3 -37.2 kg/m2), respectively. The median operating time was 60 minutes (range 24-135 minutes), and the median number of harvested para-aortic lymph nodes was 12 (range 6-49). There were eleven cases of complications: five of major vessel injuries (three IVC, one aorta, and one common iliac vein), two lymphocysts, two cases of chylous ascites, a cisterna chyli rupture, and one case of ureteric injury. There were two conversions to laparotomy: one left common iliac vein laceration that needed to be repaired and removal of an enlarged para-aortic lymph node completely. 결론: It is feasible and efficient to perform LPAL to the left renal vein level for women with gynecologic malignancies by well-trained gynecologic oncology surgeon according to our suggested standard surgical boundary.