http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
중환자에서 동맥혈 가스분석 횟수와 그로인한 실혈량에 대한 연구
이석열,전철우,정영수,오희숙,마분란,이정미,정혜영,이만복,이길노 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1
Background : Arterial blood gas analysis is the most comon exam in intensive care unit. In this study, the frequency of blood gas analysis and the amount of blood loss after Blood Gas Analysis in Intensive Care Unit were observed. Methods : From November 1999 to February 2000, 115 patients admitted to intensive care unit at Soonchunhyang university Kumi hospital were studied prospectively for the frequency of blood gas analysis and the amount of blood loss after blood gas analysis in Intensive Care Unit. Results : The mean value of frequency of blood gas analysis was 6.41±6.49 and the mean value of amount of blood loss after blood gas analysis was 0.78ml. This was lower than that of other foreign reports. The patients with ventilator therapy above 24 hours showed higher frequency of blood gas analysis than that of not applied ventilator patients. Pulse oxymetry was applied to all patients and the frequency of blood gas analysis was decreased due to the use of strict pulse oxymetry. Conclusion : Doctors and nurses in intensive care unit keep in mind that adequate blood sampling is needed for the decrease of blood loss. Education and protocol for the decrease of blood loss after arterial blood gas analysis may be necessary.
UV-TiO_2 광촉매 반응기를 이용한 미생물의 살균효과
김시욱,이정섭,정혜광,박열,윤성명,유진철,이범규,이인화,박진열 조선대학교 환경연구소 1998 環境硏究 Vol.14 No.1
UV-TiO_2 반응기를 이용하여 Escherichia coli와 Aspergillus oryzae var. oryzae의 살균효과를 측정하였다. 254㎚에서 최대 14 watt의 자외선 방출량을 내는 램프를 원형 Pyrex유리관 중앙에 설치하였고 TiO_2는 석영관에 박막증착(Thin Film Coating)된 형태와 슬러리 형태로 나누어 회분식으로 살균정도를 측정하였다. E. coli에 대한 살균력은 1.7×10^7 cells/㎖에 대해 5분간 자외선 조사를 하였을 경우 2.0×10^2 cells/㎖으로 감소하였고, 자외선 조사와 함께 슬러리 형태의 TiO_2를 첨가하였을 경우에는 3.4×10 cells/㎖으로, 자외선 조사와 함께 TiO_2가 석영관에 박막증착된 경우에는 7.6×10^2 cells/㎖으로 감소하였다. 한편 위와 같은 조건에 유리관 하부에서 기포를 주입수 11분 동안 자외선을 조사시킨 경우에는 1.3×10^2 cells/㎖으로, 자외선 조사와 함께 슬러리 형태의 TiO_2를 첨가하였을 경우에는 1×102 cells/㎖으로, 자외선 조사와 함께 TiO_2가 박막증착된 경우에는 7.9×10 cells/㎖을 나타내었다. 결국 UV-TiO_2 반응기에 사용되는 TiO_2가 슬러리 형태일 때 최대 살균효과를 나타내었으나 기포가 첨가되었을때는 오히려 살균에 장애를 받는 것으로 나타난 반면 석영관에 박막증착된 경우에는 기포가 첨가되는 것이 살균에 효과적인 것으로 관찰되었다. The killing effect of UV-TiO_2 photocatalytic system on the Escherichia coli DH5-α and Aspergillus oryzae var. oryzae (KCTC 6095) was studied. The UV lamp which emits maximum 14 watts at 254 ㎚ was set on the center of pyrex round glass tube. Two types of TiO_2, one of which is slurry and another which is thin film coated form, were used to determine the killing effect. When UV was irradiated to 1.7×10^5 cells/㎖ of E. coli for 11 min, the living cell number decreased to 4.0×10^0 cells/㎖. The effect of UV system together with slurried TiO_2 was less than 1 cells/㎖, whereas that of UV-coated TiO_2 system decreased to 7.1×10^3 cells/㎖. To study the effect of bubble on the killing of microorganisms, air was bubbled to the bottom of glass tube. When 1.7×10^5 cells/㎖ were exposed to UV for 11 min in combination with air bubble, the living cell number decreased to 1.3×10^2 cells/㎖. In the same condition except the addition of slurried TiO_2, the living cells were 1×10^2 cells/㎖. However, more cells could be killed by the system which consists of UV, coated TiO_2, and air bubble (7.9×10^1 cells/㎖). From these results, it was found that UV-slurried system is the most effective one, but its killing effect is not stimulated by air bubble. However, bubbling was very effective in the UV-coated TiO_2 system.
Incorporation of Unnatural Amino Acids in Response to the AGG Codon
Lee, Byeong Sung,Shin, Seunggun,Jeon, Jong Yeob,Jang, Kyoung-Soon,Lee, Bun Yeol,Choi, Sangdun,Yoo, Tae Hyeon American Chemical Society 2015 ACS CHEMICAL BIOLOGY Vol.10 No.7
<P>The biological protein synthesis system has been engineered to incorporate unnatural amino acid into proteins, and this has opened up new routes for engineering proteins with novel compositions. While such systems have been successfully applied in research, there remains a need to develop new approaches with respect to the wider application of unnatural amino acids. In this study, we reported a strategy for incorporating unnatural amino acids into proteins by reassigning one of the Arg sense codons, the AGG codon. Using this method, several unnatural amino acids were quantitatively incorporated into the AGG site. Furthermore, we applied the method to multiple AGG sites, and even to tandem AGG sequences. The method developed and described here could be used for engineering proteins with diverse unnatural amino acids, particularly when employed in combination with other methods.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/acbcct/2015/acbcct.2015.10.issue-7/acschembio.5b00230/production/images/medium/cb-2015-00230j_0004.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/cb5b00230'>ACS Electronic Supporting Info</A></P>
Kim, Jin Won,Yoon, Hee Chan,Kwon, Soon Jae,Lee, Bun Yeol,Lee, Pyung Cheon Elsevier 2017 Journal of biotechnology Vol.259 No.-
<P>Mevalonate (MVA) is a key compound of living organisms including bacteria, plants, and humans. MVA and mevalonolactone (MVL), a lactonized form of MVA, are important for pharmaceutical, cosmeceutical, and biotechnological applications. Although (R, S)-MVA with 50% enantiomeric purity is mainly produced by chemical synthesis, recently, microbial fermentation processes for MVA production have been considered as an alternative to the chemical synthesis because of high enantiomeric purity [(R)-MVA] and high titer. In the present study, bio-MVA produced by a fermentative process was decolorized by a charcoal-based method and then chemically transformed into bio-MVL without byproducts by means of phosphoric acid as an add catalyst. The final bio-MVL was (R)-MVL with over 99% enantiomeric purity according to H-1 NMR analysis.</P>