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( J. M. Kim ),( S. K. Lim ),( J. S. Moon ),( Nam H. M. ),( H. M. Kang ),( G. C. Jang ),( S. H. Wee ),( Y. S. Joo ),( S. C. Jung ) 한국미생물 · 생명공학회 2010 Journal of microbiology and biotechnology Vol.20 No.10
A total of 1,444 coagulase-negative staphylococci (CNS) isolates from bovine mastitic milk samples collected during 2003-2008 in Korea were identified to the species level. Of 14 species identified, S. simulans, S. haemolyticus, and S. sciuri accounted for over 60% of the isolates. All the CNS isolates were tested for susceptibility to eight antimicrobials commonly used in dairy cattle. With a few exceptions, similar resistance patterns were observed among the CNS species: penicillin and ampicillin showed the lowest activity, whereas amikacin, cephalothin, and gentamicin were highly effective. About 39% (557/1,444) of the CNS isolates were pan-susceptible, whereas 12% (175/1,444) showed resistance to four or more antimicrobials tested.
Tunable optofluidic birefringent lens
Wee, D.,Hwang, S. H.,Song, Y. S.,Youn, J. R. The Royal Society of Chemistry 2016 Soft matter Vol.12 No.17
<P>An optofluidic birefringent lens is demonstrated using hydrodynamic liquid-liquid (L-2) interfaces in a microchannel. The L-2 lens comprises a nematic liquid crystal (NLC) phase and an optically isotropic phase for the main stream and the surrounding sub-stream, respectively. When the optofluidic device is subjected to a sufficiently strong electric field perpendicular to the flow direction, NLCs are allowed to orient along the external field rather than the flow direction overcoming fluidic viscous stress. The characteristics of the optofluidic birefringence lens are investigated by experimental and numerical analyses. The difference between the refractive indices of the main stream and the sub-stream changes according to the polarization direction of incident light, which determines the optical behaviour of the lens. The incidence of s-polarized light leads to a short focal point, while p-polarized light has a relatively long focal distance from the same L-2 interface. The curvatures and focal lengths of the lens are successfully evaluated by a hydrodynamic theory of NLCs and a simple ray-tracing model.</P>
상안검거근의 절제에 의한 안검하수의 교정에 대한 임상적고찰
마홍수,조문제,조해석,위성신,최오규 大韓成形外科學會 1986 Archives of Plastic Surgery Vol.13 No.2
The great number of operations described over the past century for correcting blepharoptosis is indicative of the difficulty of achieving a standardized technique. It will be consistently effective condition that has so many variations of degree and individual operative technique is so important. To obtain the best surgical results in blapharoptosis, it is necessary to select the appropriate operation for each case according to levator function, degree of ptosis, its etiology and the others. In generally, if the levator function is poor or abscent, sling of the upper lid to frontalis muscle is recommended and if levator function is good, resection of the levator is the treatment of choice. But some authors (Blaskovics & Jaensch) believe that resection of the levator will give an excellent result even when little preoperative levator action is evident. Authors have experienced 25 patients (27 eyes) of the moderate to severe degree of blepharoptosis who have received the levator resection, from January 1980 to January 1984 and could have done follow up studies for at least 6 months. The results were obtained as follows; 1. In most cases, the patients were satisfied except 6 cases complicated; one case of entropion and five cases of undercorrection. 2. Even if levator function was poor (below 2 mm, 7 cases), good surgical results have been obtained by resection of levator(21-25 mm or above).
L-ascorbic acid와 α-tocophero1이 돼지정액 성상과 체외수정란의 배발달율에 미치는 영향
박희진,김은국,위갑인,강만종,김광현,김재홍,문승주 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-
The objective of this studys were to investigate the effect of α-tocopherol and L-ascorbic acid supplement on the boar semen characteristics and in vitro development rate of porcine oocytes. Sperm viability rate was significantly higher in α-tocopherol supplement than in control(66.6%) after 72hr of storage(P<0.05). Sperm motility was increased in treatment(80%, 93.3%, 85%) than in control(73.3%) at 12h of storage(P<0.05). Following insemination with 60h of store, morular and blastocyst on in vitro development resulted in significantly higher than control(P<0.05). After 72h of semen storage L-ascorbic addition also increased the sperm viability rate(P<0.05). Treatment as sperm motility was significantly higher than control in 72h of store(60% vs 66.6%, p<0.05). Following insemination with 60h of store treated porcine oocytes on in vitro development was increased more than control(56.8%), 59.9%, 62.8% vs 45.1%, P<0.05). Morular and blastocyst on in vitro development resulted in significantly higher than control(27.1%, 30.0%, 33.1% vs 20.0%, P<0.05). The results from this experiment indicated that α-tocopherol and L-ascorbic acid supplementation, for viability and motility in porcine semen, increased delay storing time of semen and in vitro development rate following insemination.
반흔성 하안검 외반증에 대한 Composite Graft의 치험예
함기선,위성신,조해석,임풍,조문제 大韓成形外科學會 1980 Archives of Plastic Surgery Vol.7 No.1
Eyelid ectropion was the most common late sequelae encountered in our experiences following trauma or thermal burn around the eyelid. Those deformities must be corrected early to preserve visual acuity. Split-skin graft to the upper eyelid and full thickness skin graft to the lower lid have been emphasized to the most reliable methods for correction of the cicatrical ectropion. However, there is tendency toward contracture under these grafts, and the ectropion recur and reoperation or additional sugery required. To solve these problems, we have corrected the cicatrical ectropion with free composite graft of skin and cartilage from the concha of the auricle. The results of these composite grafts are favorable without recurrence.