| 1 | Techno-Economic Challenges of Fuel Cell Commercialization显示文摘随着资源稀缺、气候变化加剧以及污染程度上升等问题的凸显,经济增长需要依赖更加环保、高效的生产过程。燃料电池具有高效和环保的特点,是内燃机和锅炉的理想替代品,也是通向绿色工业的途径。然而,作为一种新的能源技术,燃料电池的市场渗透率仍然不高。本文通过研究生命周期和价值链活动,对燃料电池系统进行了技术经济和环境方面的分析。首先,我们研究了燃料电池的发展进程,根据其生命周期活动、价值链活动以及最终用户验收标准确定了下一阶段需要采取的行动。然后,我们统一了解了燃料电池商业化的制度障碍。最终用户的主要验收标准是功能、价格和可靠性,比起其他同类产品,如内燃机和电池,燃料电池需要在这些标准上有所提升,以凸显其竞争优势。燃料电池的维修和保养费用可能会使成本大幅增加并减小可用性(由于可靠性较低),而成本和可用性是最终用户能否接受的主要因素。因此,为了克服可靠性的障碍,燃料电池产业面临着巨大的挑战。本文深入洞察了过去几年燃料电池商业化面临的主要障碍,讨论了燃料电池在未来绿色低碳经济中的潜在关键作用。文中还提出了未来低碳经济的必要性,并指出了相关的研究方向。以燃料电池为配置的绿色能源可以真正作为未来的商业模式。通过采取绿色公众投资、实行政策举措,为经济增长提供一条更加持续的发展道路,鼓励更多的环保产业投资。 | Junyewang Hualin Wang Yi Fan | 2018 | Engineering2018，4，3： | 11 |
| 2 | A Study of Molecular Resection Margins for Esophageal Squamous Cell Carcinoma Using Large Pathologic Sections显示文摘OBJECTIVE It has been shown that application of molecular biological techniques to surgical margins of some cancers could predict risk of local recurrence. However, the optimal length of surgical resection with tumor-free surgical margins for esophageal squamous cell carcinoma (ES-CC) is unknown. This study was conducted to evaluate the optimal length of surgical resection for ESCC with molecularly tumor-free surgical margins marked by p53 and Ki67. METHODS Surgical specimens from 70 patients with ESCC were collected for study. The lengths of the upper margin, tumor, and lower margin of every specimen were measured during the operation. Each specimen was divided into three large pathologic sections, stained with H&E and immunohistochemically for p53 and Ki67, and examined microscopically. The lengths of the upper and lower resection ends were measured for p53 and Ki67 positive expression. The actual surgical lengths were calculated by the principle of rational shrinkage. RESULTS All surgical margins were histologically tumor-free, while the positive rates of p53 and Ki67 were 66% and 54%. The positive rates of p53 and Ki67 in the upper resection end were 17% and 20%. The mean lengths of the upper resection end showing p53 and Ki67 positive expression were 1.08±1.12 cm and 1.64±1.01 cm, and the maximum lengths were 3.73 cm and 3.26 cm. The positive rates of p53 and Ki67 in the lower resection end were 20% and 23%. The mean lengths of the lower resection end of p53 and Ki67 with positive expression were 1.11±1.15 cm and 1.34±0.94 cm, and the maximum lengths were 3.73 cm and 3.61 cm. CONCLUSION The optimal length of surgical resection with molecularly tumor-free surgical margins of ESCC is not more than 5 cm. | Guowei Ma Xu Zhang JunyeWang Qiuliang Wu Hao Long Peng Lin Jianhua Fu Richard Malthaner Meiqing Zhao Lanjun Zhang Zhesheng Wen Tiehua Rong | 2006 | Chinese Journal of Clinical Oncology2006，3，5： | 0 |
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