RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 원문제공처
          펼치기
        • 등재정보
        • 학술지명
          펼치기
        • 주제분류
        • 발행연도
          펼치기
        • 작성언어

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • SCOPUS

        The Effects of Absorptive Capability and Innovative Culture on Innovation Performance: Evidence from Chinese High-Tech Firms

        LIU, Si-Meng,HU, Rui,KANG, Tae-Won Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.3

        The innovation of enterprises allowed firms to promote technological innovation as an important choice to improve sustainable competitiveness. This study aims to investigate the relationship between absorptive capacity and innovation performance of Chinese high-tech enterprises and focuses on the mediating role of innovation culture in high-tech enterprises. Data came from surveying high-tech enterprises in China, and the reliability analysis, factor analysis, and correlation analysis, path analysis (SEM) were analyzed using SPSS23, AMOS. The results show that intellectual capital composed of human capital, structural capital, and relational has a significant impact on acquisition performance; intellectual capital is composed of human capital; structural capital has a significant influence on innovation performance; and absorptive capital has a significant impact on innovation performance. In addition, innovative culture plays a partial mediating role between absorptive capacity and innovation performance. The findings of this study suggest that, to ensure the better absorption and operation of knowledge, high-tech enterprises can accumulate more knowledge, promote the transformation of knowledge into technology, and strengthen the capability of knowledge absorptive capacity, and at the same time, create an innovation culture atmosphere and encourage employees to develop new products to achieve enterprise goals in order to promote the improvement of innovation performance.

      • KCI등재

        Highly Uniform Core/Shell Structured CoFe2O4/MIL-100(Fe) Nanofibers for Efficient Visible Light Photocatalysis

        Jun Liu,Meng Sun,Meng-Jie Chang,Si-Meng Fan,Qian Hui,Fu-Rong Ni,Bin Yuan 한국섬유공학회 2021 Fibers and polymers Vol.22 No.2

        Novel CoFe2O4/MIL-100(Fe) (CFO/MIL-100(Fe)) core/shell nanofibers were prepared by successive ionic layeradsorption and reaction (SILAR) assembly of MIL-100(Fe) on electrospun CoFe2O4 nanofibers. The MIL-100(Fe) shellswere constructed on the dispersed CoFe2O4 fiber surface with high uniformity, homogeneous thickness and high stability. Due to the inherent porosity of MIL-100(Fe), a higher specific surface area of 225.77 m2/g is achieved for the CFO/MIL-100(Fe)-10 sample. The formed CFO/MIL-100(Fe) catalysts exhibit high catalytic activity towards degradation of rhodamineB (RhB) under visible light irradiation. The photocatalytic activity remains above 77 % within 60 min illumination after fourcycles. Due to the simple synthetic method, highly uniform structure, strong magnetic recoverable, as well as goodphotocatalytic performance, the obtained CFO/MIL-100(Fe) core/shell nanofibers could be promising photocatalysts forpractical application.

      • KCI등재

        Effect of Run Ze Tonic in Mice with Kidney-Yin Deficiency

        Shuo Liu,Si-yao Ma,Wen-yi Zhu,Jia Liang,Hong Meng 한국피부과학연구원 2021 아시안뷰티화장품학술지 Vol.19 No.1

        목적: 본 연구는 Run Ze Tonic의 신장-음 결핍 마우스의 갑상선 호르몬, 부신 기능, 성 호르몬 및 주기적 뉴클레오티드에 미치는 영향을 관찰하고자 한다. 방법: ICR 마우스를 정상 대조군, 모델 그룹, Run Ze Tonic 고용량 그룹, 중간 용량 그룹 및 저용량 그룹으로 분류하였으며, 매 그룹은 20마리씩 구성하였다. 신장-음 결핍 마우스 모델은 연속 10 일 동안 1 일 1 회 레보 티록신 나트륨을 위내 직접 투여에 의해 확립되었다. 각 그룹의 마우스의 일반특징 및 체중을 관찰하고 장기지수를 측정하였다. 그리고 ELISA 방법으로 테트라 요오 도티 로닌 (T4), 트리 요오 도티 로닌 (T3), 갑상선 호르몬 (TSH), 코르티코 트로 핀 방출 호르몬 (CRH), 부 신피질 자극 호르몬 (ACTH), 코르티 코스 테론 (CORT), 테스토스테론 (T), 에스트라 디올 (E2), 고리 형 아데노신 모노 포스페이트 (cAMP) , 사 이 클릭 구아노 신 모노 포스페이트 (cGMP)를 측정하였다. 결과: Run Ze Tonic 고용량군은 신장-음결핍 마우스의 일반적인 신체 징후를 개선하고, 체중을 증가시키고(p<0.05), TSH 함량을 증가시킨다(p<0.01). 고용량 군에서 T3 및 T4 수치가 유의하게 감소하 였으며(p<0.01), ACTH 수준도 유의하게 감소하였다(p<0.05). 신장 음 결핍 암컷 마우스는 고용량 군에서 성 호르몬 E2 및 E2/T 비 율이 유의하게 감소(p<0.01)하였다. 신장 음이 결핍 된 수컷 마우스의 경우 고용량 군에서 성 호르몬 T함량이 유의하게 증가되었다 (p<0.05). 그리고 고용량 군에서 고리 형 뉴클레오티드 시스템의 cAMP 수치가 감소하였다(p<0.01). 결론: Run Ze Tonic은 내분비 계에서 호르몬 수치 장애, 부신 피질 기능 및 에너지 대사 균형을 조절하여 음양을 키우고 신장을 강화하는 역할을 할 수 있다고 사료된다. Purpose: To observe the effects of Run Ze Tonic on thyroid hormone, adrenal function, sex hormones and cyclic nucleotide of mice with kidney-yin deficiency. Methods: ICR mice were randomly grouped into normal control group, model group, Run Ze Tonic high dose group, the middle dose group and low dose group, male and female in half. The kidney-yin deficiency mice models were established by intragastric administration of levothyroxine sodium before intragastric administration of corresponding drugs once a day for 10 consecutive days. One day after the last administration, the effects were observed by measuring weight. And tetraiodothyronine (T4), triiodothyronine (T3), thyrotropin (TSH), corticotropin releasing hormone (CRH), adrenocorticotropic hormone (ACTH), corticosterone (CORT), testosterone (T), estradiol (E2), cyclic adenosine monophosphate (cAMP), cyclic guanosine monophosphate (cGMP) were tested by ELISA method. Results: Compared with the model group, the body weight, TSH level increased significantly (p <0.01, p<0.05), and T3, T4, ACTH level decreased significantly in high dose group (p <0.01, p <0.05). The E2 level in female decreased significantly in high dose group (p <0.01), the same as the ratio of E2/T (p <0.01). The T level in male increased significantly in high dose group (p <0.01), the same as the ratio of E2/T (p <0.01). And cAMP level decreased in the high dose group(p <0.05). Conclusion: Run Ze Tonic may play the role of nourishing yin and strengthening kidney by adjusting hormone level disorder, adrenal cortex function and balancing energy metabolism in endocrine system.

      • KCI등재

        Seismic Dynamic Response Analysis of Mountain Tunnels with Seismic Reduction and Isolation Measures

        Zhongxian Liu,Tian-Chun Ai,Lei Huang,Si-Bo Meng,Ping-Lin Jiang 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.1

        In this paper, the multi-domain indirect boundary element method (IBEM) is developed for the seismic response analysis of double-line mountain tunnels with seismic reduction and isolation measures. The dynamic response of the tunnel with seismic reduction and isolation measures under incident SV waves is analyzed, and the effect of the mountain topography on the tunnel is also investigated. Further, the effects of the isolation layer and the grouting reinforcement with different thicknesses on the seismic response of the tunnel are discussed in detail. The results show that the scattering of seismic waves by mountain topography significantly increases tunnel stress. In general, with the increase of incident frequency, the isolation layer will increase the peak displacement of the tunnel by about 12.7% at most, and the isolation ratio of the isolation layer on the tunnel stress exceeds 40%. The seismic reduction performance of the grouting reinforcement also depends on the incident frequency, and the amplitude decreases by approximately 20% at most frequencies. However, it is possible that the lining displacement under high-frequency waves becomes larger. This method can provide valuable insights and assessments for damage prediction.

      • Gallbladder Cancer: a Subtype of Biliary Tract Cancer Which is a Current Challenge in China

        Qu, Kai,Liu, Si-Nan,Chang, Hu-Lin,Liu, Chang,Xu, Xin-Sen,Wang, Rui-Tao,Zhou, Lei,Tian, Feng,Wei, Ji-Chao,Tai, Ming-Hui,Meng, Fan-Di Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.4

        Biliary tract cancers, broadly described as malignancies that arise from the biliary tract epithelia, are usually divided into two major clinical phenotypes: cholangiocarcinoma and gallbladder cancer, differing in etiopathogenesis, risk factors, and perhaps molecular and genetic signatures. Atypical symptoms and lack of tumor biomarkers make it difficult to diagnose in early stages. At the time of presentation, few patients are candidates for potentially curative surgical resection. We here assessed and compared features of a total of 150 cases divided into extra- and intrahepatic cholangiocarcinomas and gallbladder cancers (GBC). Althought there were no significant differences in serum tumour marker levels, GBC patients had the poorest prognosis. Furthermore, gallbladder cancer respond poorly to chemotherapy or radiation therapy and approximately half of untreated patients died within 10 months. Therefore, treatment for patients with gallbladder cancer is still in challenge. Outcomes and survival of these patients had improved little over the past three decades - a period in which new successful treatments have greatly contributed to the prolonged patient survival for many other cancers.

      • Distinctions Between Clinicopathological Factors and Prognosis of Alpha-fetoprotein Negative and Positive Hepatocelluar Carcinoma Patients

        Xu, Jia,Liu, Chang,Zhou, Lei,Tian, Feng,Tai, Ming-Hui,Wei, Ji-Chao,Qu, Kai,Meng, Fan-Di,Zhang, Ling-Qiang,Wang, Zhi-Xin,Zhang, Jing-Yao,Chang, Hu-Lin,Liu, Si-Nan,Xu, Xin-Shen,Song, Yan-Zhou,Liu, Jun,Z Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2

        Serum alpha-fetoprotein (AFP) is a significant marker for clinical diagnosis and prognosis evaluation in hepatocellular carcinoma (HCC) patients. However, some proportion of liver cancer patients are AFP-negative (AFP ${\leq}$20ng/ml). In order to study the differences between clinicopathological factors and prognosis of alpha-fetoprotein negative and positive patients, a total of 114 cases (41 AFP-negative and 73 AFP-positive) were selected for our research. By systematically statistical analysis, the results demonstrated that compared with AFP-negative patients, AFP-positive examples were more likely to feature cirrhosis nodules, non-complete neoplasm capsules, and a poor Edmondson-steiner grade. Furthermore, AFP-negative patients demonstrated a favorable long-term prognosis. By univariate analysis and multivariate analysis with Cox's proportional hazards model, multiple tumors were found to be independent risk factors for worse survival of AFP negative patients; however, less tumor-free margins, multiple tumors and Edmondson-steiner grades III/IV, proved to be independent risk factors leading to a poor prognosis of AFP positive cases. Finally, we can infer that high levels of AFP signify a highly malignant tumor and unfavorable prognosis.

      • KCI등재

        Experimental Investigations on VIV of Bridge Deck Sections: A Case Study

        Zeng-shun Chen,Si-meng Liu,Xianfeng Yu,Cun-ming Ma,Lei Liu 대한토목학회 2017 KSCE Journal of Civil Engineering Vol.21 No.7

        In this paper, the Vortex Induced Vibrations (VIVs) of bridge deck sections of the Hong Kong-Zhuhai-Macao Bridge were investigated experimentally. Aeroelastic tests for the bridge deck of two scale ratios (1:20 model and 1:50 model) under different wind attack angles, wind speeds, and damping ratios were performed. Accessory and windbreak effects on the VIVs of the bridge deck were also carried out. The experimental results show that the accessory and windbreak tend to enlarge the VIVs of the bridge deck. Furthermore, the most unfavorable wind attack angle is 5o. At this attack angle and low damping ratios, the VIVs of the bridge deck are significant and much larger than the allowable value. In addition, the VIVs of the bridge deck decrease with increasing the damping ratios (Particularly, at large damping ratios, the VIVs were well suppressed). This study provides a guideline for the designs of long span flexible bridges on suppressing the VIVs of the bridges.

      • KCI등재

        Identification and sex expression profiles of olfactory-related genes in Mythimna loreyi based on antennal transcriptome analysis

        Zhang Yun-Ying,Guo Jin-Meng,Wei Zhi-Qiang,Zhang Xiao-Tong,Liu Si-Ruo,Guo Hui-Fang,Dong Shuanglin 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.3

        To better understand the olfactory mechanism of Mythimna loreyi, a worldwide migratory pest, we for the first time conducted a large scale identification of olfactory-related genes and investigation of their sex expression profiles by transcriptomic analysis. A total of 42,832 unigenes were obtained by transcriptome sequencing, as sembly and annotation, with an average length of 1,229 bp and N50 of 2,086 bp. In particular, 138 olfactoryrelated genes were identified by homologous blasting, including 33 odorant binding proteins (OBPs), 16 che mosensory proteins (CSPs), 63 odorant receptors (ORs), 24 ionotropic receptors (IRs) and two sensory neuron membrane proteins (SNMPs). Further, by using differential gene expression (DGE) and fragments per kilobase per million fragments (FPKM) values to compare the transcript levels between female and male antennae, we found that 22 olfactory-related genes (9 OBPs, one CSP and 12 ORs) were sex biased, with 10 genes being male biased and 12 genes female biased. In addition, sex and tissue expression profiles determined by qPCR of 15 selected genes confirmed the reliability of sex expression profiles obtained by the transcriptomic analysis, and demonstrated that most olfactory-related genes were specifically or primarily expressed in antennae, suggesting their roles in olfaction, while a few genes were highly expressed in other tissues, implying their non-olfaction functions. This study provides an important basis for further functional study of olfactory genes in M. loreyi.

      • Prognosis and Management for Gallbladder Cancer with Hepatic Invasion: Long-term Results of 139 Patients from a Single Center in China

        Qu, Kai,Chang, Hu-Lin,Liu, Si-Nan,Liu, Chang,Xu, Xin-Sen,Wang, Rui-Tao,Zhou, Lei,Tian, Feng,Wei, Ji-Chao,Tai, Ming-Hui,Meng, Fan-Di Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.3

        Objective: To improve the diagnosis of primary gallbladder carcinoma (GBC) with/without hepatic metastases by analyzing our experience of different GBC treatment in our patients. Methods: A retrospective study was carried out to analyze the clinical data of the 139 patients with GBC who underwent hepatic resection in our unit from January 2003 to December 2007. Patients were divided into two groups according to whether they demonstrated hepatic invasion. Tumor presentation, surgical modes, and prognosis of each patient were retrospectively reviewed. Kaplan-Meier curves and log-rank tests were employed to compare the survival rates of those patients undergoing different surgical procedures. Results: Of the 139 patients, 46 were men and 93 were women with the male to female ratio of 1:2.0. Their ages were ranged from 35 to 86 years with a mean age of $62.8{\pm}10.4$ years. There were 73 patients complicated with hepatic invasion (group A), and no hepatic invasion occurred in the other 66 patients (group B). Compared with the group B, the patients with hepatic invasion suffered lower differentiation of tumor (p=0.000), more advanced Nevin staging (p=0.008) and poorer prognosis (p=0.013). Radical resection were more frequently performed in group B (75.76%) than in group A (45.20%) with better outcomes (p=0.000). Conclusion: GBC patients complicated with hepatic invasion had poorer prognosis than those without invasion in long-term follow-ups. Radical resection might result in a satisfied prognosis in patients without hepatic invasion, but appears less favorable than palliative resection in those who were complicated with hepatic invasion.

      • KCI등재

        基于ZMET的中国乡村旅游意象分析

        ??卿(Li-Qing MA),?思萌(Si-Meng LIU) 조선대학교 지식경영연구원 2016 기업과 혁신연구 Vol.9 No.2

        In recent years, rural tourism has developed rapidly. The image and attracting marketing are important issue for tourism topic. This study focuses on rural tourism marketing using the Zaltman metaphor elicitation technique (ZMET) to analyze the psychological cognitive images customers have towards rural tourism. The objectives of this study are to elucidate the deep thoughts and feelings of tourists, extract dominant constructs, establish a consensus map, and propose image frameworks. These dimensions enable rural tourism operators to understand the internal demands and construct rural tourism.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼