http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Shihui Zhang (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
-
Xiaoxu Dang,Shihui Wang,Xiaopeng Deng,Na ZHANG,hongtao Mao,xiaowei Wang 대한토목학회 2024 KSCE Journal of Civil Engineering Vol.28 No.6
The purpose of this study is to examine the effect of corporate social responsibility (CSR) on the financial performance of international engineering contracting enterprises (IECEs). The study also explores the mechanisms of CSR influence on financial performance from three perspectives: customer, employee, and corporate, namely the mediating roles of customer satisfaction, employee loyalty, and corporate reputation in the relationship between CSR and financial performance of IECEs. A conceptual model and 10 hypotheses were put forward through the literature review. A total of 355 valid questionnaires were collected using snowball sampling. The proposed research model and its associated hypotheses were tested by using partial least squares structural equation modeling (PLS-SEM). The findings indicate that CSR positively affects financial performance of IECEs. The results also indicate that employee loyalty and corporate reputation can partially mediate the relationship between social responsibility and financial performance of IECEs. A noteworthy finding is the insignificant results of the analysis of customer satisfaction as a mediator. The hypothesis that customer satisfaction plays a mediating role in the relationship between the impact of CSR on financial performance is not supported. This study will provide useful references to help international engineering contractors develop CSR promotion plans, optimize CSR strategies, improve financial performance, and achieve sustainable development.
-
Liyuan Qin,Yang Wua,Zhiwei Hou,Shihui Zhang,Enchen Jiang 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.102 No.-
Swine manure activated carbon (SMAC) with self-co-doped metallic compounds and heteroatoms wasprepared by combining KOH activation with pyrolysis. The structure, electrochemical performance andadsorption of SMACs prepared with various activation temperatures, activation times, alkali-carbonratios and pickling steps were investigated. A hierarchical pore structure existed in all the SMACs, whichshowed excellent and significantly different properties, including a specific capacitance of 278 F/g, and ahigh SSA of 2321 m2/g (SMACHF), which retained 100% of its capacitance after 10,000 cycles at 5 A/g and aPb2+ adsorption capacity of 211.8 mg/g at room temperature (SMACNON). The SMACs contained heteroatomfunctional groups and Si, Ca and Mg compounds, which did not produce pseudocapacitors but didincrease the Pb2+ adsorption capacity and electrochemical cycling stability. The Pb2+ adsorption capacitiesof SMACNON, SMACPHF and SMACHF corresponded to the effect of the functional group content ratherthan the effect of the SSA. These porous carbons were derived from inexpensive swine manure, combinesuitable porosity with metallic elements and heteroatom doping, and have promising uses in multifunctionalapplications.
-
Jiayin Fu,Qiongjun Zhu,Zhezhe Chen,Jing Zhao,Shaofei Wu,Meng Zhao,Shihui Xu,Dongwu Lai,Guosheng Fu,Wenbin Zhang 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00
Background Bioresorbable stents are designed to provide temporary mechanical support to the coronary arteries and then slowly degrade in vivo to avoid chronic inflammation. Zinc (Zn) is a promising material for bioresorbable stents; However, it can cause inflammation and neointimal formation after being implanted into blood vessels. Methods To improve biocompatibility of Zn, we first coated it with polydopamine (PDA), followed by immobilization of endothelial vascular growth factor (VEGF) onto the PDA coatings. Adhesion, proliferation, and phenotype maintenance of endothelial cells (ECs) on the coated Zn were evaluated in vitro. Then, a wire aortic implantation model in rats mimicking endovascular stent implantation in humans was used to assess vascular responses to the coated Zn wires in vivo. Thrombosis in aortas post Zn wire implantation, degradation of Zn wires in vivo, neointimal formation surrounding Zn wires, and macrophage infiltration and extracellular matrix (ECM) remodeling in the neointimas were examined. Results In vitro data showed that the PDA-coated Zn encouraged EC adhesion, spreading, proliferation, and phenotype maintenance on its surfaces. VEGF functionalization on PDA coatings further enhanced the biocompatibility of Zn to ECs. Implantation of PDA-coated Zn wires into rat aortas didn’t cause thrombosis and showed a faster blood flow than pure Zn or the Zn wires coated with VEGF alone. In addition, the PDA coating didn’t affect the degradation of Zn wires in vivo. Besides, the PDA-coated Zn wires reduced neointimal formation, increased EC coverage, decreased macrophage infiltration, and declined aggrecan accumulation in ECM. VEGF immobilization onto PDA coatings didn’t cause thrombosis and affect Zn degradation in vivo as well, and further increased the endothelization percentage as compared to PDA coating alone, thus resulting in thinner neointimas. Conclusion These results indicate that PDA coatings with VEGF immobilization would be a promising approach to functionalize Zn surfaces to increase biocompatibility, reduce inflammation, and inhibit neointimal formation after Zn implantation in vivo.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
