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Chun Yan Wang(왕춘연),Chung Ha Lee(이청하),Mi Ra Lee(이미라),Beom Sik Yun(윤범식),Lei Liu(유뢰),Zhen Wang(왕젠),Zhe Ming Fang(방철명),Dong Liang Zhang(장동량),Zheng Li(이정),Chang Keun Sung(성창근) 한국생명과학회 2010 생명과학회지 Vol.20 No.5
본 논문은 선충 포식성 곰팡이에 대한 선충의 영향을 조사한 연구로, 소나무 기생곰팡이인 E. vermicola에 미치는 소나무 선충의 영향을 체계적으로 분석하였다. 선충 대사물과 선충 균질액 모두 E. vermicola의 성장을 빠르게 촉진하였으나, 선충 대사물이 선충 균질액보다 약간 높은 효과를 보였다. 또한 소나무 선충이 생성하는 휘발성 물질이 E. vermicola 성장에 미치는 영향을 분석하는 새로운 실험방법을 개발하였다. 본 연구결과에 따르면, 선충의 휘발성 물질은 E. vermicola에 아무런 영향을 끼치지 않는다는 재현성 있는 결과를 도출하였다. 본 연구는 소나무 선충의 생물학적인 조절인자로서 E. vermicola을 적용할 수 있는 정보를 제공할 수 있을 것이다. The influence of nematodes on nematophagous fungi has seldom been investigated. In the present study, the influence of pinewood nematode on its endoparasitic fungus, Esteya vermicola, was investigated systemically. Although both nematodal metabolite and nematodal homogenate could stimulate and speed up the growth of E. vermicola, the impact of nematodal metabolite was slightly higher than that of nematodal homogenate. In addition, a method was developed to investigate the influence of volatiles, discharged by pinewood nematodes in their metabolic process, on the growth of E. vermicola. Reproductive results were given and confirmed that nematodal volatiles have no influence on the cell growth of E. vermicola. This study may provide information for the application of E. vermicola as biological control agent of pinewood nematode.
산업연관분석을 이용한 중국의 산업 및 기술구조 변화요인 분석
왕춘뢰(Chun-Lei Wang),최용재(Yong-Jae Choi) 한국아시아학회 2021 아시아연구 Vol.24 No.4
본 연구에서는 1987년부터 2017년까지 중국의 산업연관표를 이용해 산업구조 현황과 특징을 살펴보고, 산업 및 기술구조 변화요인을 소비, 투자 및 수출로 구성된 최종수요 항목별 기준으로 분석하였다. 본 연구의 주요 결론을 요약하면 다음과 같다. 첫째, 분석기간 동안 전 산업을 대상으로 산업 및 기술구조 변화요인을 분석한 결과, 산업구조 변화요인은 소비가 72%를 차지하여 산업구조 변화는 대부분 소비 변화로부터 기인하였다. 그러나 2000년대 전후 소비의 설명력이 약화되었는데, 그 이유는 경기침체로 인한 민간소비 둔화와 중국 정부의 수출주도형 성장전략과 투자 활성화 정책에 기인한 것으로 판단된다. 둘째, 산업별 산업 및 기술구조 변화요인을 분해한 결과, 제조업은 소비가 약 2,541억 위안으로 산업구조 변화에 가장 큰 영향을 미친 것으로 나타났으며, 수출 역시 약 2,451억 위안으로 산업구조 변화에 중요한 영향을 미친 것으로 나타났다. 서비스업은 약 2,206억 위안의 소비 변화가 산업구조 변화에 기인하고, 투자와 수출은 각각 709억, 871억 위안의 변화가 산업구조 변화에 기여한 것으로 나타났다. 이는 산업 특성상 서비스업은 중간투입보다는 최종 소비재로 사용되기 때문에 이러한 결과가 나타난 것으로 판단된다. 셋째, 산업별 기술구조 변화요인을 최종수요 항목별로 분해한 결과, 제조업의 경우 소비의 405억 위안 증가가 기술구조 변화요인으로 작용한 것으로 나타났으며, 수출보다는 투자가 기술구조 변화를 주도한 것으로 나타났다. 기술구조 변화에 있어서도 소비가 가장 중요한 역할을 한 것으로 분석되었으며, 제조업 보다는 서비스업에서 소비의 역할이 중요했던 것으로 분석되었다. 넷째, 세부 산업별로 산업 및 기술구조 변화요인을 최종수요 항목별로 분해한 결과, 최종수요 변화요인 중 소비의 기여도가 특히 큰 산업으로는 농림어업, 음식료품, 화학제품, 운수 및 보관, 도소매업, 교육 및 보건 등을 들 수 있으며, 투자의 역할이 중요했던 산업으로는 일반 및 특수장비 제조업, 교통운송장비, 전기기계 및 장비, 운수 및 보관, 도소매업, 교육 및 보건 등을 들 수 있다. 한편 수출의 기여도가 큰 산업으로는 화학제품, 일반 및 특수장비 제조업, 도소매업 등을 들 수 있다. 기술구조 변화 요인에 대한 최종 수요 항목별로 살펴보면 산업구조 변화와 마찬가지로 소비가 가장 중요한 역할을 하고 있으나, 산업구조 변화요인과 달리 수출 보다는 투자의 역할이 중요하였다. This paper aims to analysis characteristics of the China’s industrial structure and to analyze the structural decomposition of industrial and technological changes for the period of 1987-2017 based on input-output tables. We tried to disentangle and quantify the source of China’s industrial growth. The main results are summarized as follow. First, the decomposition analysis for the total industry shows that the one of final demand, consumption accounts for most industrial and technological change. It accounts for 72% of industrial change implying that most industrial change is due to the increase of consumption. Second, the decomposition analysis for the technological change of total industry shows that for the manufacturing industry, the consumption accounts for 2,541 billion yuan implying that the technological change comes from consumption as well. In addition, for the service industry, the 2,206 billion yuan of consumption explains the technological change. Third, the decomposition by sub-industries analysis shows that for the manufacturing industry, the 405 billion yuan accounts for the technological change. Furthermore, the investment is more important than export in explaining the change.
( Qiu Chun Li ),( Ya Chen Hu ),( Yin Fei Wu ),( Xiao Chun Wang ),( Xiao Lei Xie ),( Ming Xin Tao ),( Jun Lei Yin ),( Zhi Jie Lin ),( Yang Jiao ),( Li Juan Xu ),( Xinan Jiao ) 한국미생물 · 생명공학회 2015 Journal of microbiology and biotechnology Vol.25 No.5
As Salmonella enterica serovar Pullorum remains a major economic problem for the poultry industries of countries with no efficient control measures, we presented a multidrug resistance strain S06004 (isolated from a clinically sick chicken in China in 2006) for genome sequencing. The genome comparison showed that the strain contained two prophages, the ST104 and prophage-4 (Fels2) of E. coli LF82, which were not detected in the only published genomes of S. Pullorum RKS5078 and CDC1983-67. In addition, the GyrA Ser83 point mutation, drugresistant genes, and many antibiotic pump systems that are present in S06004 may be contributing to the multidrug resistance of this strain.
Effect of Black Ginseng on Memory Improvement in the Amnesic Mice Induced by Scopolamine
Mi-Ra Lee,Beom-Sik Yun,Lei Liu,Dong-Liang Zhang,Zhen Wang,Chun-Ling Wang,Li-Juan Gu,Chun-Yan Wang,Eun-Kyung Mo,Chang-keun Sung 고려인삼학회 2010 Journal of Ginseng Research Vol.34 No.1
This study compared the effects of black, white, and red ginseng extracts (WGE, RGE, BGE, 200 ㎎/㎏, p.o.) on learning and memory deficits associated with scopolamine treatment (SCOP, 2 ㎎/㎏, i.p.). Tacrine (THA, 10 ㎎/㎏, p.o.) was used as a positive control. Ginseng significantly reversed SCOP-induced memory impairment in the passiveavoidance test and also reduced escape latency in training trials of the Morris water maze test. The increased acetylcholinesterase (AChE) activity produced by SCOP was significantly inhibited by WGE and RGE (p<0.001). SCOP administration had no effect on choline acetyltransferase (ChAT) activity, but RGE and BGE significantly increased ChAT activity (p<0.05). SCOP administration increased oxidative damage in the brain. Treatment of amnesic mice with ginseng extracts decreased malondialdehyde (MDA) levels and restored superoxide dismutase (SOD) and catalase (CAT) activity to control levels. These results suggest that black ginseng enhances cognitive activity by regulation of cholinergic enzymes and antioxidant systems.
Effect of Black Ginseng on Memory Improvement in the Amnesic Mice Induced by Scopolamine
Lee, Mi-Ra,Yun, Beom-Sik,Liu, Lei,Zhang, Dong-Liang,Wang, Zhen,Wang, Chun-Ling,Gu, Li-Juan,Wang, Chun-Yan,Mo, Eun-Kyung,Sung, Chang-Keun The Korean Society of Ginseng 2010 Journal of Ginseng Research Vol.34 No.1
This study compared the effects of black, white, and red ginseng extracts (WGE, RGE, BGE, 200 mg/kg, p.o.) on learning and memory deficits associated with scopolamine treatment (SCOP, 2 mg/kg, i.p.). Tacrine (THA, 10 mg/kg, p.o.) was used as a positive control. Ginseng significantly reversed SCOP-induced memory impairment in the passiveavoidance test and also reduced escape latency in training trials of the Morris water maze test. The increased acetylcholinesterase (AChE) activity produced by SCOP was significantly inhibited by WGE and RGE (p<0.001). SCOP administration had no effect on choline acetyltransferase (ChAT) activity, but RGE and BGE significantly increased ChAT activity (p<0.05). SCOP administration increased oxidative damage in the brain. Treatment of amnesic mice with ginseng extracts decreased malondialdehyde (MDA) levels and restored superoxide dismutase (SOD) and catalase (CAT) activity to control levels. These results suggest that black ginseng enhances cognitive activity by regulation of cholinergic enzymes and antioxidant systems.
Mi-Ra Lee,Beom-Sik Yun,Dong-Liang Zhang,Lei Liu,Zhen Wang,Chun-Ling Wang,Li-Juan Gu,Chun-Yan Wang,Eun-Kyung Mo,이선영,성창근 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.3
This study was performed to estimate ameliorating effect of aqueous antler extract (AAE) on memory impairments induced by scopolamine (SCOP, 2 mg/kg,i.p.). Tacrine (THA, 10 mg/kg, p.o.) was used as a positive control. The passive avoidance test and Y-maze test results showed that a single AAE (200 mg/kg, p.o.) administration significantly restored memory impairment. Moreover,AAE or THA treatment significantly reduced the escape latency prolonged by SCOP during trial sessions in the Morris water maze test. In vivo study, AAE significantly inhibited acetylcholinesterase (AChE) activity (p<0.001),whereas choline acetyltransferase (ChAT) activity (p<0.05)was enhanced. In addition, SCOP elevated oxidative damage in the brain. However, treatment with AAE to the amnesic mice induced by SCOP considerably decreased malondialdehyde (MDA) level (p<0.01) and restored the activities of superoxide dismutase (SOD) (p<0.01) and glutathione peroxidase (GSH-Px) (p<0.001) approaching the control values. These results suggest that AAE showed the potential cognitive-enhancing activity by regulating cholinergic marker enzyme activities and promoting the antioxidant system.
Wang, Di-Ya,Liu, Lei,Qi, Xing-Shun,Su, Chun-Ping,Chen, Xue,Liu, Xu,Chen, Jiang,Li, Hong-Yu,Guo, Xiao-Zhong Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.13
Background: A systematic review and meta-analysis were performed to compare the post-recurrence survival with hepatic re-resection versus transarterial chemoembolization (TACE) for recurrent hepatocellular carcinoma (HCC) after initial resection. Materials and Methods: All relevant papers were searched via PubMed, EMBASE, and Cochrane Library databases. Hazard ratios (HRs) with 95% confidence intervals (CIs) were pooled using a random-effects model. Subgroup analysis was performed according to country. Sensitivity analysis was performed in studies which clearly reported the recurrent regions, in moderate/high-quality studies, in studies published in full-text form, and in studies published after 2005. Results: In total, twelve papers were included in our study. Five and seven of them were of moderate- and poor-quality, respectively. The overall meta-analysis demonstrated a statistically significantly higher post-recurrence survival in the hepatic re-resection group than in those undergoing TACE (HR=0.64, 95%CI=0.52-0.79, P<0.0001). Heterogeneity was statistically significant and statistical significance remained in the subgroup analysis. Sensitivity analyses were also consistent with the overall analysis. Conclusions: Hepatic re-resection might provide a better post-recurrence survival than TACE for recurrent HCC after initial resection. However, considering the low quality of published studies and the potential bias of treatment selection, further randomized trials should be warranted to confirm these findings.