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申明楠,李太雨 한국해운물류학회 2001 해운물류:이론과실천 Vol.- No.1
본 연구의 목적은 먼저 중국 경제체제 개혁을 단계별로 그의 특징을 살펴보고 중국 경제체제 개혁에 따라 해운의 역할 변화과정을 고찰하며 그 변화 가운데 COSCO의 발전전략의 변화를 연구하는데 있다. 중국의 개방정책과 사회주의 시장경제 도입에 따라 중국의 외항해운 정책구조도 크게 변화되어 왔다. 이러한 환경변화 속에서 중국의 외항해운도 순수한 운송서비스를 제공하는 산업으로 변화해왔으며 해운기업도 정부의 하나의 기구로서 역할하기 보다는 독립적으로 책임을 부담하고 이익창출을 기업목표로 설정하는 독립기업으로 전환되었다. COSCO는 1984년 독립적 기업으로 전환하였고 1993년 기업집단으로 발전하였다. 특히 1993년 이후 COSCO는 선대경영체제의 개혁, 육상산업의 확장, 해외업무의 확대 등 개혁조치를 채택이후 기업은 계획경제체제의 管理方式에서 탈출하여 市場經濟의 관리경영체제로 전환하였다. COSCO는 중국 경제체제 변화에 따라 적절히 발전전략을 조정하여 기업의 경쟁력을 향상하고 있다.
김종부,신명국,성낙환,최문정,김경주,이동석 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.A
This experiment was done to investigate the leaching and adsorption properties of heavy metals on porphyry. The comparison with respect to the leachability of heavy metals from porphyry between the Korea Standard Leaching Test (KSLT) and the Toxicity Characteristic Leaching Procedure (TCLP) was carried out. The fractional composition of leachate and the total concentration of heavy metal of porphyry were studied through Sequential Extraction Procedure (SEP) and EPA Method 3050. Adsorption experiment of porphyry has pointed out that the optimum dosage of porphyry for 50ppm Pb was over 10g/L, the effective particle size for absorption was below 200 mesh and the optimum pH was about 7. From the Freundlich' adsorption equation, l/n was 1.0722, and k was 0.0041. After adsorption, the fractional composition of Pb was changed. The exchangeable, carbonate, reducible fractions were increased, and the organic fraction was not changed, and the residual fraction was decreased.
Ming Shen 한국섬유공학회 2021 Fibers and polymers Vol.22 No.6
Wet-spinning was considered as a facile and proven technique for industrial production of synthetic fibers. However, continuous spinning of poly(3,4-ethylenedioxythiophene): poly(p-styrene sulfonic acid) (PEDOT: PSS) fibers from commercial aqueous dispersion is difficult to approach in traditional coagulation bath. In this work, the metal chloride salts were added into the coagulation bath to promote the solidification of PEDOT: PSS fibers by the interaction between metal ions and PSS chains. Therefore, continuous and uniform filament over 100 m was achieved. Especially, after the dosage of lithium chloride, resultant PEDOT: PSS fibers present an enhanced breaking strength from 116±3 MPa to 185±7.5 MPa. Meanwhile, the electroconductivity shows an order of magnitude higher owing to the reduction of defects within the fibers. The optimization of coagulation bath enables the direct fabrication of continuous fibers by 1.3 wt% PEDOT: PSS aqueous dispersion exemption from the concentration treatment, which simplifies the spinning process and beneficial for the scalable preparation of fibers.
Natural Orifice Specimen Extraction (NOSE) with Single- Stapling Anastomosis for Left Colon Cancer
Ming-Yin Shen,William Tzu-Liang Chen 대한내시경복강경외과학회 2020 Journal of Minimally Invasive Surgery Vol.23 No.4
One of the major criticisms of laparoscopic colectomy is the requirement of an additional mini laparotomy to remove the resected specimen. This may be associated with postoperative pain and wound complications. Therefore, the use of a natural orifice as a delivery route for the specimen extraction without a laparotomy incision can subsequently reduce the risk of wound complications. In this video, we demonstrate the natural orifice specimen extraction procedure with a side-to-end single-stapling colorectal anastomosis.
Hou Ming-Feng,Ou-Yang Fu,Li Chung-Liang,Chen Fang-Ming,Chuang Chieh-Han,Kan Jung-Yu,Wu Cheng-Che,Shih Shen-Liang,Shiau Jun-Ping,Kao Li-Chun,Kao Chieh-Ni,Lee Yi-Chen,Moi Sin-Hua,Yeh Yao-Tsung,Cheng Chi 생화학분자생물학회 2021 Experimental and molecular medicine Vol.53 No.-
In Western countries, breast cancer tends to occur in older postmenopausal women. However, in Asian countries, the proportion of younger premenopausal breast cancer patients is increasing. Increasing evidence suggests that the gut microbiota plays a critical role in breast cancer. However, studies on the gut microbiota in the context of breast cancer have mainly focused on postmenopausal breast cancer. Little is known about the gut microbiota in the context of premenopausal breast cancer. This study aimed to comprehensively explore the gut microbial profiles, diagnostic value, and functional pathways in premenopausal breast cancer patients. Here, we analyzed 267 breast cancer patients with different menopausal statuses and age-matched female controls. The α-diversity was significantly reduced in premenopausal breast cancer patients, and the β-diversity differed significantly between breast cancer patients and controls. By performing multiple analyses and classification, 14 microbial markers were identified in the different menopausal statuses of breast cancer. Bacteroides fragilis was specifically found in young women of premenopausal statuses and Klebsiella pneumoniae in older women of postmenopausal statuses. In addition, menopausal-specific microbial markers could exhibit excellent discriminatory ability in distinguishing breast cancer patients from controls. Finally, the functional pathways differed between breast cancer patients and controls. Our findings provide the first evidence that the gut microbiota in premenopausal breast cancer patients differs from that in postmenopausal breast cancer patients and shed light on menopausal-specific microbial markers for diagnosis and investigation, ultimately providing a noninvasive approach for breast cancer detection and a novel strategy for preventing premenopausal breast cancer.
Jing Shen,Jilin Zhang,Jian Wan,Li Zhou,Ming Jiang 보안공학연구지원센터 2014 International Journal of Database Theory and Appli Vol.7 No.6
Stencils are finite-difference algorithms for solving large-scale and high-dimension partial differential equations. Due to the data dependences among the iterative statements in Stencils, traditional Stencil computations are be executed serially, rather than in parallel. It’s challenging to design an effective and scalable Stencil parallelized method. To address the issue of 3D data space computing, we present a serial execution model based on multi-layers symmetric Stencil method and time skewing techniques. Within this model, the iteration space is divided to multiple tiles based on time skewing, where the executive process is ordered by the sequence of tiles, and the nodes in each individual tile can be swept repeatedly to improve the data locality. In addition, we propose a novel 3D iterative space alternate tiling Stencil parallel method, which subdivides the iteration space along high dimension, and changes the execution sequence of tiles to reduce the data dependency and communication cost, where the partial order of tiles is still guaranteed. Experimental results demonstrate our proposed alternative tiling parallel method achieves better parallel efficiency and scalability compared with the domain-decomposition methods.
Niu, Yu-Ming,Shen, Ming,Li, Hui,Ni, Xiao-Bing,Zhou, Juan,Zeng, Xian-Tao,Leng, Wei-Dong,Wu, Ming-Yue Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8
Objective: Findings for associations between the methylenetetrahydrofolate reductase (MTHFR) A1298C gene polymorphism and head and neck cancer risk have been conflicting. We therefore performed a meta-analysis to derive a more precise relationship. Methods: Ten published case-control studies were collected and odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the association between MTHFR A1298C polymorphism and head and neck cancer risk. Sensitivity analysis and publication bias assessment also were performed to guarantee the statistical power. Results: Overall, no significant association between MTHFR A1298C polymorphism and head and neck cancer risk was found in this meta-analysis (C vs. A: OR=1.04, 95%CI=0.87-1.25, P=0.668, Pheterogeneity<0.001; CC vs. AA: OR=1.07, 95%CI=0.70-1.65, P=0.748, $P_{heterogeneity}<0.001$; AC vs. AA: OR=1.06, 95%CI=0.88-1.27, P=0.565, $P_{heterogeneity}<0.001$; CC+AC vs. AA: OR=1.06, 95%CI=0.86-1.30, P=0.571, $P_{heterogeneity}<0.001$; CC vs. AA+AC: OR=1.02, 95%CI=0.69-1.52, P=0.910, $P_{heterogeneity}<0.001$). Similar results were also been found in succeeding analysis of HWE and stratified analysis of ethnicity. Conclusion: In conclusion, our meta-analysis demonstrates that MTHFR A1298C polymorphism may not be a risk factor for developing head and neck cancer.
Li-na Liu,Guo-ying Zhou,Ai-rong Shen,Bao-ming Shen,Yun Tan,Zhu-ming Tan 한국균학회 2022 Mycobiology Vol.50 No.5
Mycena subpiligera, a new taxon in sect. Fragilipedes that can strongly enhance the germin- ation efficiency of Gastrodia elata seeds, was discovered in subtropical areas of China. As revealed by a morphological comparison with related Mycena species as well as maximum likelihood (ML) and Bayesian phylogenetic analyses based on sequences of the internal tran- scribed spacer (ITS) and the large subunit (LSU) regions of nuclear ribosomal RNA, the new taxon can be distinguished from phenotypically similar and phylogenetically related species. Optimal cultural conditions for M. subpiligera basidiomata are reported, and the germination rate of the new species is compared with that of M. citrinomarginata.