개발에 의해 조성된 매립지의 기후특성 (Ⅰ)

민병형,김가현,이승휘,이정환,강대석 東亞大學校 海洋資源硏究所 2003 硏究論文集 Vol.15 No.-

The security of Busan waterfront space mostly depends on the reclamation of the coastal zone. The temperature variation is caused by the reclamation, and the model formula of correlation with the reclamation quantity in the coastal zone of Busan is derived(X=logl0α, α=the total of the reclamation quantity). For the determinating coefficient γ²=0.86609 Y= - 157.06659 + 91.766855X - 16.6357X² + 1.0534768X³- 0.006741X⁴ From this, the later temperature increase followed by increase of the reclamation quantity is predicted.

출산후 여성의 우울성향과 영아 기질, 양육 스트레스 및 대처방식과의 연관성

최영민,이승휘,김영미,이정호,전성일,이기철 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

목 적 : 산후우울증의 발생은 출산 직후부터 1년까지 지속될 수 있고 출산 이후에도 오랜 기간동안 발생 가능성이 있으며, 산후우울증을 단순히 선행하는 감정적 문제, 통제 소재, 사회적지지, 출산과 동반된 생리적 변인만으로 설명할 수 없다. 그러므로 산후우울증은 출산후 산모-영아 상호관계에서 겪게되는 어려운 영아의 기질, 산모가 영아를 양육하면서 겪게되는 양육 스트레스, 그리고 산모의 대처 방식과 연관이 있을 것이다. 본 연구는 산후우울증과 영아 기질, 양육 스트레스, 대처방식을 변인으로 하여 산후우울증과의 연관성을 평가하기위해 산후의 우울성향과 각 변인의 관계를 연구하였다. 방 법 : 연구의 대상은 1996년 7월 16일부터 8월 27일까지 인제 대학교 의과대학 부속 상계백병원 소아과 외래에 예방 접종을 위해 내원한 4개월에서 12개월 사이의 영아를 둔 산모 105명을 대상으로 하였다. Beck우울척도(BDI), 영아기질척도(EAS), 부모 양육스트레스 목록표(PSI), 대처방식척도(WCC)를 사용하여 산후의 우울성향과 이들 변인과의 연관성을 평가하여 다음과 같은 결과를 얻었다. 결 과 : 1) 어머니의 우울성향 점수는 영아의 기질중 부정적 정서성(r=.26 p<0.05), 과도한 활동성(r=.22 p<0.05)과 유의미한 상관 관계를 보였다. 영아의 사회성 척도와는 부적 상관이 있었으나 통계적으로 유의미하지는 않았다. 2) 어머니의 우울성향 점수는 양육 스트레스와는 정적 상관관계가 있었다(r=.44 p<0.001). 3) 어머니의 우울성향 점수와 대처방식과 유의미한 상관관계를 보이지 않았다. 4) 영아의 부정적 정서성과 양육 스트레스는 정적 상관관계가 있었으나(r=.49 p<0.001) 사회성, 활동성과의 상관관계는 유의미하지 않았다. 양육 스트레스와 대처방식과도 통계적으로 유의미한 상관관계를 보이지 않았다. 결 론 : 본 연구 결과, 산모의 산후 우울성향과 첫째, 영아 기질 중 정서성과 활동성이 연관관계가 있고 둘째, 양육스트레스와 연관이 있으나 세째, 대처방식과는 연관이 없었다. 이런 결과는 산후의 우울성향과 각 요인과의 연관성을 살펴볼 때 산후우울증에 더 중요한 영향을 미치는 것은 산모의 대처 방식이라는 어머니 측의 변인보다는 출산과 동반된 양육 스트레스 혹은 영아의 어려운 기질일 것이라고 추론할 수 있다. Objectives : This Study examined the relationship of depressive tendency in postpartum women with psychosocial factors such as infant temperament, parental stress and coping style. Methods : The subjects consisted of 05 postpartum women, each of whom had an infant aged 4 to 12 months. They were assessed on demographic variables and on measures of the depressive symptomatology, infant temperament, parental stress and the coping style using Beck Depression Inventory(BDI), the EAS temperamental survey, Parenting Stress Index(PSI), the Way of Coping Checklist(WCC). And then we assessed the relationship of depressive tendency in postpartum women with psychosocial factors. Results : The results were as follows : 1) Depressive tendency in postpartum women had significant relationship with emotionality(r=.26 p<0.05) and activity(r=.22 p<0.05) of infant temperament. 2) Depressive tendency in postpartum women had significant relationship with parenting stress(r=.44 p<0.001). 3) Depressive tendency in postpartum women had no significant relationship with coping style. 4) Parental stress had significant relationship with emotionality(r=.49 p<0.001) but did not have any relationship with sociability and activity of infant temperament. Parenting stress had no significant relationship with coping style. Conclusion : These results suggest that depressive tendency in postpartum women correlated with emotionality and activity of infant temperament correlated with parenting stress but not correlated with coping style. Infant temperament and parenting stress to child rearing are more significantly correlated with depressive tendency in postpartum women than coping style of postpartum women.

cDNA array 방법을 이용한 망간에 노출된 흰쥐 뇌기저핵의 유전자발현 분석

이채관,노성민,문덕환,,김정호,손병철,김대환,이창희,김휘동,김정원,김종은,안진홍,이채언 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Objectives: This study investigated the gene expression profile in basal ganglia of manganese-exposed rats based on cDNA array analysis. Methods: For cDNA array, 25 male Sprague-Dawley rats (250±25 g) were intraperitoneally injected with 25 ㎎/㎏ B. W./day of MnCl2 (0.3 ㎖) for 10 days. For dose-related gene expression analysis, rats were intraperitoneally injected with 0.2, 1.0, and 5.0 ㎎/㎏ B. W/day of MnCl2 for 10 days. Control rats were injected with an equal volume of saline. RNA samples were extracted from brain tissue and reverse-transcribed in the presence of [α^(32)P]-dATP. Membrane sets of the Atlas Rat 1.2 array Ⅱ and Toxicology array 1.2 kit (Clontech, Palo Alto, CA) were hybridized with cDNA probe sets. Northern blot hybridization method was employed to assess the dose-related gene expression. Results: Fifty-two genes showed significant changes in expression of more than two-fold. Twenty-eight were up-regulated and 24 were down-regulated in the manganese-exposed group compared to the control. Among the 52 genes, 28 genes including nuclear factor I-X1 (NF1-X1), neuroligin 2 and 3, mitochondrial stress-70 protein (MTHSP70), neurodegeneration-associated protein 1 (Neurodap 1), multidrug resistance protein (MDR), and endoplasmic reticulum stress protein 72 (ERP72), were reported for the first time related to the manganese-induced neurotoxic-metabolism in the rat basal ganglia. According to the dose-related gene expression analyses, MTHSP70, Neurodap 1 and ERP72 genes were up-regulated compared to the control even in the group exposed to low manganese dose ( 0.2 ㎎/㎏ B.W./day). Conclusions: Twenty-eight genes detected for the first time in this study were closely related to the manganese-induced neurotoxic-metabolism in the rat basal ganglia and further study of these genes can give some more useful information about the manganese metabolism.

개원가 내원 성인에서의 요실금 유병률 : 천안 진료중심 연구망 연구

김기성,박윤종,박일환,심석규,이종민,유선미,정유석,정혜원,김광휘,염형택,박정희,원영일,민대홍 대한가정의학회 1999 Korean Journal of Family Medicine Vol.20 No.1

Formate and Nitrate Utilization in <i>Enterobacter aerogenes</i> for Semi-Anaerobic Production of Isobutanol

Jung, Hwi-Min,Kim, Yong Hwan,Oh, Min-Kyu WILEY 2017 BIOTECHNOLOGY JOURNAL Vol.12 No.11

Metabolic perturbations in mutants of glucose transporters and their applications in metabolite production in Escherichia coli

Hwi-Min JUNG,Dae-Kyun IM,Gyoo Yeol JUNG,Min-Kyu OH 한국생물공학회 2019 한국생물공학회 학술대회 Vol.2019 No.10

Improved production of isobutanol in pervaporation-coupled bioreactor using sugarcane bagasse hydrolysate in engineered <i>Enterobacter aerogenes</i>

Jung, Hwi-Min,Lee, Ju Yeon,Lee, Jung-Hyun,Oh, Min-Kyu Elsevier 2018 Bioresource technology Vol.259 No.-

<P><B>Abstract</B></P> <P>A process of isobutanol production from sugarcane bagasse hydrolysates in <I>Enterobacter aerogenes</I> was developed here with a pervaporation-integrated procedure. Isobutanol pathway was overexpressed in a mutant strain with eliminated byproduct-forming enzymes (LdhA, BudA, and PflB). A glucose-and-xylose–coconsuming <I>ptsG</I> mutant was constructed for effective utilization of lignocellulosic biomass. Toxic effects of isobutanol were alleviated by <I>in situ</I> recovery via a pervaporation procedure. Compared to single-batch fermentation, cell growth and isobutanol titer were improved by 60% and 100%, respectively, in the pervaporation-integrated fermentation process. A lab-made cross-linked polydimethylsiloxane membrane was cast on polyvinylidene fluoride and used in the pervaporation process. The membrane-penetrating condensate contained 55–226 g m<SUP>−2</SUP> h<SUP>−1</SUP> isobutanol with 6–25 g L<SUP>−1</SUP> ethanol after separation. This study offers improved fermentative production of isobutanol from lignocellulosic biomass with a pervaporation procedure.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>E. aerogenes</I> was engineered for producing isobutanol from lignocellulosic biomass. </LI> <LI> Sugarcane bagasse hydrolysates was applied to isobutanol production. </LI> <LI> A pervaporation procedure was adopted for <I>in situ</I> recovery of isobutanol. </LI> <LI> The pervaporation-coupled fermentation process improved isobutanol production. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Enhanced lycopene production yield in sugar transporter deficient E. coli

Hwi-Min JUNG,Min-Kyu OH 한국생물공학회 2018 한국생물공학회 학술대회 Vol.2018 No.10

Metabolic engineering of Enterobacter aerogenes for production of isobutanol with improved isobutanol-tolerance

Hwi-Min JUNG,Bo-Young LEE,Min-Kyu OH 한국생물공학회 2017 한국생물공학회 학술대회 Vol.2017 No.4

Metabolic engineering of Klebsiella pneumoniae for the production of cis,cis-muconic acid

Jung, Hwi-Min,Jung, Moo-Young,Oh, Min-Kyu Springer-Verlag 2015 Applied microbiology and biotechnology Vol.99 No.12

<P>cis,cis-Muconic acid (ccMA), a metabolic intermediate of Klebsiella pneumoniae, can be converted to adipic acid and terephthalic acid, which are important monomers of synthetic polymers. However, wild-type K. pneumoniae does not produce ccMA because intracellular carbon flow does not favor ccMA biosynthesis. In this study, several metabolic engineering strategies were used in an attempt to modify the wild-type strain to induce it to produce ccMA. First, by blocking the synthesis of aromatic amino acids, 343 mg/L of catechol, a precursor of ccMA, was produced. Then, the native catechol 1,2-dioxygenasegene (catA) was overexpressed, which caused the strain to convert the catechol to ccMA. The production of ccMA was further improved by deletion of the muconate cycloisomerase gene (catB) and by deleting a feedback inhibitor of the aromatic amino acid pathway. Further improvement was achieved by adjusting the pH of the culture broth. The developed strain produced 2.1 g/L of ccMA in flask cultivation. The results showed the potential of K. pneumoniae as a ccMA producer.</P>