论文部分内容阅读
人们常说“眼睛是心灵的窗户”,现代人接受外界信息,大约80％是通过眼睛“看”来的.清晰的视力非常重要.眼科检查是一种有效检测视力损害的科学手段,能够在屈光不正或眼底病变的早期起到预警作用.但是眼科检查能帮助我们拥有更健康的眼睛吗?眼健康和我们的健康生活又有何关联呢?
健康的眼睛,健康的生活
【摘 要】
：
人们常说“眼睛是心灵的窗户”,现代人接受外界信息,大约80％是通过眼睛“看”来的.清晰的视力非常重要.眼科检查是一种有效检测视力损害的科学手段,能够在屈光不正或眼底病变
【出 处】
：
中国眼镜科技杂志
【发表日期】
：
2021年6期
其他文献
分析了次氯酸钠多级配制系统安全性能,探究了提高安全运行稳定性的措施,通过优化工艺流程,提高多级配制系统的安全运行水平等,降低了运行风险。
跟驰行为谱可有效反映不同驾驶场景下及不同驾驶人类型的跟驰行为特征.基于高逼真度驾驶模拟器搭建15种典型跟驰驾驶场景,获取相应的驾驶行为数据;根据驾驶风格和驾驶经验将驾驶人分为熟练-中立型、熟练-激进型、熟练-保守型、非熟练-中立型、非熟练-激进型、非熟练-保守型等6种类型,以速度、加/减速度、油门/刹车踏板受力、车头时/间距、相对速度、TTC,以及TIT等指标作为跟驰行为谱构成要素,构建了6类驾驶人在15种跟驰驾驶场景下的跟驰行为谱;并以近距离跟驰过程中的风险评估为案例探讨了跟驰行为谱的应用.
Behaviour of granular matter under gravity-induced stress gradient:A two-dimensional numerical inves
Gravity is the most important load source in mining and geotechnical engineering,which causes both the stress level and stress gradient inside geomaterials.Different from the stress level,the influence of gravity-induced stress gradient on the behaviour o
High strain rate compressive strength behavior of cemented paste backfill using split Hopkinson pres
The stability of cemented paste backfill(CPB)is threatened by dynamic disturbance,but the conventional low strain rate laboratory pressure test has difficulty achieving this research purpose.Therefore,a split Hopkinson pressure bar(SHPB)was utilized to in
Similar simulation study on the deformation and failure of surrounding rock of a large section chamb
Large and super-large section chamber groups in coal mines are frequently affected by dynamic loads resulting from production activities such as roadway driving and blasting.The stability of the surrounding rock is poor,and it is difficult to control.In t
A common and important task in mining industry is to estimate the settlement or final volume of the tailings or backfill associated with sedimentation and self-weight consolidation. Up to now however, most existing analytical solutions were developed by o
今年是第5个“中国品牌日”.5月10～12日,2021年中国品牌日活动在上海展览中心举办,今年的主题为“中国品牌,世界共享;聚力双循环,引领新消费”,1500多家企业参加.在活动现场,1
期刊
为进一步推动中国钢铁行业绿色低碳可持续发展,制定适合中国钢铁行业现状并引领行业发展的碳排放标准势在必行。在简要总结国内外碳排放标准工作研究进展的基础上,基于中国钢铁行业低碳领域标准体系现状,分析了钢铁行业碳排放标准制定的必要性,结合冶金工业规划研究院提出的“C+4E”目标体系框架,给出对未来中国钢铁行业相关碳排放标准制定工作的思考和建议,以期促进中国由冶金大国到强国的快速跨越。
Effect of the benzene ring of the dispersant on the rheological characteristics of coal-water slurry
In this study,low-rank coal-water slurry(LCWS)was prepared using polyoxyethylene dodecylphenol ether(PDPE)and polyoxyethylene lauryl ether(PLE),respectively.A combination of experiments and simulations was used to investigate the pulping properties and mi