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QUAN Cong-na,LI Jian-min,LI Bo 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
Biology technology innovation an important way of improving the competition ability of enterprises and promoting the sustainable development of enterprises, and the success of biology technology innovation can provide a great deal of benefit for them. However, high risks exist during the course of technology innovation, thus rate of sucess is low and the enterprise may suffer great loss from the risks. So it is a key problem of biology technology innovation how to cvaluate exactly the risk of technology innovation, but ambiguity of risk itself and people’s cognition cause more difficulties of risk evaluation. In this paper, the analytical hierarchy process and fuzzy mathematics theory are applied to the evaluation of th biology technology innovation risks, which makes the evaluation from qualitative analysis to quantitative analysis, reduces the impact of the subjective factors and improves the accuracy of risk evaluation.
Yong-Qiang Zhao,Guo-Di Liu,Cong-Cong Hou,Ying-Li Han,Jun-Quan Zhu,Jun-Quan Zhu 대한독성 유전단백체 학회 2016 Molecular & cellular toxicology Vol.12 No.3
Catalase (CAT) is an essential antioxidant in organisms, its can eliminate hydrogen peroxides produced in the cellular environment. Previous studies have focused mainly on the functions of CAT by pathogen challenge, but the functions of CAT by metals stress remain unclear. In order to investigate the function of CAT in Acrossocheilus fasciatus (AfCat), we cloned CAT complete cDNA sequences and analyzed its functions by cadmium (Cd) stress. qPCR analysis illustrated that the expression of CAT changed rapidly and dynamically in response to Cd from 0.05 mg L-1 to 1.25 mg L-1. Enzyme activity assay result showed that CAT activity was up-regulated significantly in response to Cd from 0.05 mg L-1 to 1.25 mg L-1. Histochemistry analysis showed that the structure of liver, testis and kidney were severely damaged by exposed to Cd of 1.25 mg L-1. Collectively, the results of our study indicate that AfCat may play an indispensable role in maintaining redox balance under Cd exposure, but AfCat expression will be inhibited when Cd accumulation reaches to the critical concentration. This study will illuminate the potential functions of AfCat in the defense mechanisms of reproductive and metabolic systems under Cd exposure in A. fasciatus.
Cong-Hui Li,Xian-Hui Su,Bo Zhang,Yong-Feng Han,Er-Wei Zhang,Lei Yang,Dong-Liang Zhang,Song-Tao Yang,Zhen-Quan Yan,Bu-Lang Gao 대한영상의학회 2014 Korean Journal of Radiology Vol.15 No.6
Objective: Tiny cerebral aneurysms are difficult to embolize because the aneurysm’s sac is too small for a single small coil, and coils within the aneurysm may escape from the confinement of a stent. This study was performed to introduce the stent-assisted coil-jailing technique and to investigate its effect on the coil embolization of tiny intracranial aneurysms. Materials and Methods: Sixteen patients with tiny intracranial aneurysms treated with the stent-assisted coil-jailing technique between January 2011 and December 2013 were retrospectively reviewed and followed-up. Results: All aneurysms were successfully treated with the coil-jailing technique, and at the end of embolization, complete occlusion of the aneurysm was achieved in 9 cases (56.3%), incomplete occlusion in 6 (37.5%), and partial occlusion in 1 (6.3%). Intraprocedural complications included acute thrombosis in one case (6.3%) and re-rupture in another (6.3%). Both complications were managed appropriately with no sequela. Follow-up was performed in all patients for 3–24 months (mean, 7.7 months) after embolization. Complete occlusion was sustained in the 9 aneurysms with initial complete occlusion, progressive thrombosis to complete occlusion occurred in the 6 aneurysms with initial near-complete occlusion, and one aneurysm resulted in progressive thrombosis to complete occlusion after initial partial occlusion. No migration of stents or coils occurred at follow-up as compared with their positions immediately after embolization. At follow-up, all patients had recovered with no sequela. Conclusion: The stent-assisted coil-jailing technique can be an efficient approach for tiny intracranial aneurysms, even though no definite conclusion regarding its safety can be drawn from the current data.
Yao, Quan,Sun, Jian-Guo,Ma, Hu,Zhang, An-Mei,Lin, Sheng,Zhu, Cong-Hui,Zhang, Tao,Chen, Zheng-Tang Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.1
Lung cancer is the most common causes of cancer-related deaths worldwide, and a lack of effective methods for early diagnosis has greatly impacted the prognosis and survival rates of the affected patients. Tumor-initiating cells (TICs) are considered to be largely responsible for tumor genesis, resistance to tumor therapy, metastasis, and recurrence. In addition to representing a good potential treatment target, TICs can provide clues for the early diagnosis of cancer. MicroRNA (miRNA) alterations are known to be involved in the initiation and progression of human cancer, and the detection of related miRNAs in TICs is an important strategy for lung cancer early diagnosis. As Hsa-miR-155 (miR-155) can be used as a diagnostic marker for non-small cell lung cancer (NSCLC), a smart molecular beacon of miR-155 was designed to image the expression of miR-155 in NSCLC cases. TICs expressing CD133 and CD338 were obtained from A549 cells by applying an immune magnetic bead isolation system, and miR-155 was detected using laser-scanning confocal microscopy. We found that intracellular miR-155 could be successfully detected using smart miR-155 molecular beacons. Expression was higher in TICs than in A549 cells, indicating that miR-155 may play an important role in regulating bio-behavior of TICs. As a non-invasive approach, molecular beacons could be implemented with molecular imaging to diagnose lung cancer at early stages.
( Yanling Quan ),( Lin Wang ),( Yisheng Liu ),( Jingxiang Cong ),( Shengquan Xie ),( Xiuhong Wu ) 한국화학공학회 2015 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.53 No.3
Plackett-Burman (PB) and Box-Behnken (BB) experimental designs were used to optimize fermentation variables for the biotransformation of glycyrrhizin (GL) to monoglucuronyl-glycyrrhetinic acid (MGGA). The PB design was first used to screen the important factors among the medium variables. The steepest ascent method was used to approach the optimum range for each of these factors. The BB design was finally used to analyze the response surfaces of the screened factors for further optimization. The optimized conditions for this system were 0.7 g/L MgSO4·7H2O, 1.19 g/L GL, and cultivation for six days. The biotransformation of GL to MGGA could reach up to 35.72%, which is a good result for this kind of transformation.
A Comparative Study of Unsupervised Deep Learning Methods for MRI Reconstruction
Zhuonan He,Cong Quan,Siyuan Wang,Yuanzheng Zhu,Minghui Zhang,Yanjie Zhu,Qiegen Liu 대한자기공명의과학회 2020 Investigative Magnetic Resonance Imaging Vol.24 No.4
Recently, unsupervised deep learning methods have shown great potential in image processing. Compared with a large-amount demand for paired training data of supervised methods with a specific task, unsupervised methods can learn a universal and explicit prior information on data distribution and integrate it into the reconstruction process. Therefore, it can be used in various image reconstruction environments without showing degraded performance. The importance of unsupervised learning in MRI reconstruction appears to be growing. Nevertheless, the establishment of prior formulation in unsupervised deep learning varies a lot depending on mathematical approximation and network architectures. In this work, we summarized basic concepts of unsupervised deep learning comprehensively and compared performances of several state-of-the-art unsupervised learning methods for MRI reconstruction.
Li-hua Xie,Xin Quan,Jie Zhang,Yan-yan Yang,Run-hong Sun,Ming-cong Xia,Bao-guo Xue,Chao Wu,Xiao-yun Han,Ya-nan Xue,Li-rong Yang 한국식물병리학회 2019 Plant Pathology Journal Vol.35 No.1
Gaeumannomyces graminis var. tritici is a soil borne pathogenic fungus associated with wheat roots. The accurate quantification of gene expression during the process of infection might be helpful to understand the pathogenic molecular mechanism. However, this method requires suitable reference genes for transcript normalization. In this study, nine candidate reference genes were chosen, and the specificity of the primers were investigated by melting curves of PCR products. The expression stability of these nine candidates was determined with three programs-geNorm, Norm Finder, and Best Keeper. TUBβ was identified as the most stable reference gene. Furthermore, the exopolygalacturonase gene (ExoPG) was selected to verify the reliability of TUBβ expression. The expression profile of ExoPG assessed using TUBβ agreed with the results of digital gene expression analysis by RNA-Seq. This study is the first systematic exploration of the optimal reference genes in the infection process of Gaeumannomyces graminis var. tritici.
Xie, Li-hua,Quan, Xin,Zhang, Jie,Yang, Yan-yan,Sun, Run-hong,Xia, Ming-cong,Xue, Bao-guo,Wu, Chao,Han, Xiao-yun,Xue, Ya-nan,Yang, Li-rong The Korean Society of Plant Pathology 2019 Plant Pathology Journal Vol.35 No.1
Gaeumannomyces graminis var. tritici is a soil borne pathogenic fungus associated with wheat roots. The accurate quantification of gene expression during the process of infection might be helpful to understand the pathogenic molecular mechanism. However, this method requires suitable reference genes for transcript normalization. In this study, nine candidate reference genes were chosen, and the specificity of the primers were investigated by melting curves of PCR products. The expression stability of these nine candidates was determined with three programs-geNorm, Norm Finder, and Best Keeper. $TUB{\beta}$ was identified as the most stable reference gene. Furthermore, the exopolygalacturonase gene (ExoPG) was selected to verify the reliability of $TUB{\beta}$ expression. The expression profile of ExoPG assessed using $TUB{\beta}$ agreed with the results of digital gene expression analysis by RNA-Seq. This study is the first systematic exploration of the optimal reference genes in the infection process of Gaeumannomyces graminis var. tritici.
Tingshuai Yan,Keli Quan,Cong Yan,Tong Yang,Yingqi Zhao,Jianping Shu,Gaofei He 대한비뇨의학회 2022 Investigative and Clinical Urology Vol.63 No.4
Purpose: To compare the clinical efficacy and safety of pre-indwelling double-J stents versus ureteral catheters for artificial hydronephrosis in percutaneous nephrolithotomy (PCNL). Materials and Methods: We retrospectively analyzed the data of 1,258 patients who underwent PCNL for kidney stones from August 2017 to July 2020 in our hospital. Among them, 682 patients had double-J stents inserted (DJ group) and 576 patients had ureteral catheters (UC group). We analyzed baseline patient characteristics, perioperative outcomes, and complications in both groups. Results: The puncture success rate was 97.9% and 97.4% in the DJ and UC groups, respectively (p>0.05). The operation time was 74.5±37.8 minutes in the DJ group compared with 80.8±38.5 minutes in the UC group (p=0.004). The total stone-free rate in the DJ and UC groups was 80.5% and 78.7%, respectively (p>0.05). The incidence of perioperative complications was relatively low in both groups and showed no obvious differences. In the subgroup analysis, the operation time for patients with no obvious or mild hydronephrosis preoperatively was significantly shorter in the DJ group than in the UC group (p<0.05). However, there were no significant differences among patients who had moderate or severe hydronephrosis preoperatively. Conclusions: It is feasible, safe, and effective to create artificial hydronephrosis by insertion of pre-indwelling double-J stents in PCNL surgery. Furthermore, the operation time was significantly shorter in the DJ group than in the group with pre-indwelling ureteral catheters, especially in patients who had no obvious or mild hydronephrosis preoperatively.