http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
ORP profile을 이용한 연속 회분식 반응기(Sequencing Batch Rector)에서 무산소공정 추론
심문용,부경민,임정훈,우혜진,김창원 한국환경과학회 2004 한국환경과학회지 Vol.13 No.3
The SBR(Sequencing Batch Reactor) process is ideally suited to treat high loading wastewater due to its high dilution rate. SBR operates by a cycle of periods consisting of filling, reacting, settling, decanting and idling. The react phases such as aeration or non-aeration, organic oxidation, nitrification, denitrification and other biological reactions can be achieved in a reactor. Although the whole reactions can be achieved in a SBR with time distributing, it is hard to manage the SBR as a normal condition without recognizing a present state. The present state can be observed with nutrient sensors such as NH₄^(-)-N, NO₂^(-)-N, NO₃^(-)-N and PO₄^(3-)-P. However, there is still a disadvantage to use the nutrient sensors because of their high expense and inconvenience to manage. Therefore, it is very useful to use common on-line sensors such as DO, ORP and pH, which are less expensive and more convient. Moreover, the present states and unexpected changes of SBR might be predicted by using of them. This study was conducted to get basic materials for making an inference of SBR process from ORP(oxidation reduction potential) of synthetic wastewater. The profiles of ORP, DO, and pH were under normal nitrification and denitrification were obtained to compare abnormal condition. And also, nitrite and nitrate accumulation were investigated during reaction of SBR. The bending point on ORP profile was not entirely in the low COD/NOx ratio condition. In this case, NOx was not entirely removed, and minimum ORP value was presented over -300mV. Under suitable COD/NOx ratio which complete denitrification was achieved, ORP bending point was observed and minimum ORP value was under -300mV. Under high COD/NOx ratio, ORP bending point was not detected at the first subcycle because of the fast denitrification and minimum ORP value was under -300mV at the time.
Notes : Culture Conditions Affecting the Optimal Mycelial Growth of Cystoderma ami anthinum
( Sung Mi Shim ),( Yun Hee Oh ),( Kyung Rim Lee ),( Seong Hwan Kim ),( Kyung Hoan Im ),( Jung Wan Kim ),( U Youn Lee ),( Jae Ouk Shim ),( Mi Ja Shim ),( Min Woong Lee ),( Hyeon Su Ro ),( Hyun Sook Lee 한국균학회 2005 Mycobiology Vol.33 No.1
Shim, Moon-Jung,Im, Jee-Aee The Korean Society for Biomedical Laboratory Scien 2008 Journal of biomedical laboratory sciences Vol.14 No.4
Non-alcoholic fatty liver disease (NAFLD) is associated with various metabolic abnormalities, including central obesity, type 2 diabetes, dyslipidemia, and high blood pressure. This suggests that NAFLD may represent the hepatic manifestation of the metabolic syndrome. In this study, we investigated unfavorable effects NAFLD on components of metabolic syndrome in post-menopause women. Eight hundred sixty-nine postmenopausal women were recruited for this study. The diagnosis of fatty liver was based on the results of abdominal ultrasonography. Serum levels of fasting glucose, total cholesterol, triglyceride, and HDL-cholesterol were measured. The prevalence of component of metabolic syndrome such as hypertension, hyperglycemia, hypertriglyceridemia, and low-HDL-cholesterol was significantly higher in subjects with NAFLD as compared with those without NAFLD. The moderate to severe grade of NAFLD presented higher levels of serum fasting glucose, fasting insulin, HOMA-IR, total cholesterol, and triglycerides than the mild NAFLD and the normal group. In conclusion, metabolic syndrome risk was increased in post-menopause women with NAFLD as compared with those without NAFLD. The severity of NAFLD affected metabolic syndrome risk factors. The optimal strategy for the treatment of NAFLD is likely to include lifestyle modifications and therapy to improve insulin resistance.
Jung, Chan Su,Kim, Han Sung,Im, Hyung Soon,Park, Kidong,Park, Jeunghee,Ahn, Jae-Pyoung,Yoo, Seung Jo,Kim, Jin-Gyu,Kim, Jae Nyeong,Shim, Ji Hoon American Chemical Society 2015 NANO LETTERS Vol.15 No.6
<P>Phase-change nanowires (NWs) have emerged as critical materials for fast-switching nonvolatile memory devices. In this study, we synthesized a series of <I>m</I>GeTe·Bi<SUB>2</SUB>Te<SUB>3</SUB> (GBT) pseudobinary alloy NWsGe<SUB>3</SUB>Bi<SUB>2</SUB>Te<SUB>6</SUB> (<I>m</I> = 3), Ge<SUB>4</SUB>Bi<SUB>2</SUB>Te<SUB>7</SUB> (<I>m</I> = 4), Ge<SUB>5</SUB>Bi<SUB>2</SUB>Te<SUB>8</SUB> (<I>m</I> = 5), Ge<SUB>6</SUB>Bi<SUB>2</SUB>Te<SUB>9</SUB> (<I>m</I> = 6), and Ge<SUB>8</SUB>Bi<SUB>2</SUB>Te<SUB>11</SUB> (<I>m</I> = 8)and investigated their composition-dependent thermal stabilities and electrical properties. As <I>m</I> decreases, the phase of the NWs evolves from the cubic (C) to the hexagonal (H) phase, which produces unique superlattice structures that consist of periodic 2.2–3.8 nm slabs for <I>m</I> = 3–8. <I>In situ</I> temperature-dependent transmission electron microscopy reveals the higher thermal stability of the compositions with lower <I>m</I> values, and a phase transition from the H phase into the single-crystalline C phase at high temperatures (400 °C). First-principles calculations, performed for the superlattice structures (<I>m</I> = 1–8) of GBT and <I>m</I>GeTe·Sb<SUB>2</SUB>Te<SUB>3</SUB> (GST), show an increasing stability of the H phase (versus the C phase) with decreasing <I>m</I>; the difference in stability being more marked for GBT than for GST. The calculations explain remarkably the phase evolution of the GBT and GST NWs as well as the composition-dependent thermal stabilities. Measurement of the current–voltage curves for individual GBT NWs shows that the resistivity is in the range 3–25 mΩ·cm, and the resistivity of the H phase is lower than that of the C phase, which has been supported by the calculations.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2015/nalefd.2015.15.issue-6/acs.nanolett.5b00755/production/images/medium/nl-2015-007559_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl5b00755'>ACS Electronic Supporting Info</A></P>
Shim, Soojin,Im, Young Bin,Jung, Myunghwan,Park, Woo Bin,Yoo, Han Sang The Korean Society of Veterinary Science 2018 大韓獸醫學會誌 Vol.58 No.2
Brucellosis is one of the common zoonoses caused by Brucella abortus (B. abortus). However, little has been reported on factors affecting invasion of B. abortus into host cells. To investigate cell-type dependent invasion of B. abortus, phagocytic RAW 264.7 and THP-1 cells and non-phagocytic HeLa cells were infected with wild-type and mutant B. abortus, and their invasion efficiencies were compared. The invasion efficiencies of the strains were cell-type dependent. Wild-type B. abortus invasion efficiency was greater in phagocytic cells than in epithelial cells. The results also indicated that there are different factors involved in the invasion of B. abortus into phagocytic cells.
Genes Related to Intracellular Survival of Brucella abortus in THP-1 Macrophage Cells
( Soojin Shim ),( Young Bin Im ),( Myunghwan Jung ),( Woo Bin Park ),( Han Sang Yoo ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.10
Brucella abortus can survive and replicate within host macrophages, and great efforts have been made to demonstrate the genes involved in pathogenicity, such as internalization, in Brucella research. Here, intracellular responses were compared between THP-1 macrophage cells stimulated with B. abortus wild-type and four mutants (C1, C10, C27, and C32) using microarray to demonstrate the role of genes related to intracellular survival and replication. These mutants were generated by deleting genes encoding BAB_RS13225 (4-hydrobenzoate 3- monooxygenase, PHBH), BAB_RS00455 (heme exporter protein cytochrome C, CcmC), BAB_RS03675 (exopolyphosphatase, PPX), and BAB_RS13225 (peptidase M24). The results showed that mutants C1 and C10 induced significant suppression of survival levels and cytokine expression relative to wild-type in the THP-1 macrophage cells. These findings suggest that the BAB_RS13225 and BAB_RS00455 genes play important roles in survival within human macrophages. Conversely, mutants C27 and C32 induced significantly higher survival level than wild-type in the cells inhibiting cellular signal transduction. It is assumed that the BAB_RS03675 and BAB_RS13225 genes play a role in cellular resistance to B. abortus. Therefore, the disrupted genes are involved in B. abortus intracellular growth, and especially in its survival, and they could be effective targets for understanding the intracellular bacterium, B. abortus.