神偷奶爸2
一路一配方 沥青做成“定制款”_我的网站
一 |
China won one gold and three silver medals at the third International Nuclear Science Olympiad (INSO) in Jeddah, Saudi Arabia on Saturday, marking the country's debut at the competition, according to Xinhua News Agency.
The four-member Chinese team ranked among the top participating countries. The eight-day event brought together teams from 19 countries, with theoretical and experimental exams covering nuclear physics, radiation protection and nuclear fuel, among others, reported Xinhua.
Organizing committee representative Talal Alrashidi welcomed China's participation, saying the students delivered an outstanding performance and demonstrated the positive spirit of Chinese youth.
Gold medalist Liu Siqi, a student from Beijing No. 80 High School's Wangjing Campus, said competing with outstanding young people worldwide has "strengthened my determination to study hard and scale new heights in science."
"We will continue to strengthen the popularization of nuclear science and encourage more outstanding young people to learn about, understand and participate in the nuclear field," Wang Peng, head of the Chinese delegation, deputy chief economist of the China Institute of Nuclear Industry Strategy, and president of the China Atomic Energy Press, was quoted by Xinhua as saying.
INSO is currently a leading nuclear science competition for secondary-school students, promoting scientific excellence and international cooperation in the field of nuclear science and technology. INSO is organized with support from the International Atomic Energy Agency, in collaboration with host governments and partner institutions. It is modeled after other international science olympiads, such as the International Physics Olympiad and the International Chemistry Olympiad, but focuses specifically on nuclear science and its peaceful uses, according to the official INSO website.
As the world's first youth Olympiad dedicated to nuclear science, INSO aims to stimulate young people's interest in the field and promote international exchanges, said Xinhua.
Global Times
。
二 | 沧州有一家订单式工厂，为不同路况精准研发不同配方的沥青。8月20日，在黄骅市港城产业园区的伦特化工集团有限公司沥青材料研究院内，研究院主任崔世媛正带领科研人员，对一款黑色沥青样本进行配方优化实验。“这款沥青是我们历时3年时间，经过上百次配比试验研发出来的。”崔世媛说，通过精准配比，能让沥青分子内部构建起稳固的三维化学交联网络，相当于给沥青分子“搭起骨架”，从根本上解决性能不稳定的问题。
三 | 相比传统材料，其高温抗车辙力提升50%、低温抗裂性提高20%、路面使用寿命延长30%。去年9月，这款自主研发的沥青一走出实验室，就被大规模应用在沧州市沧乐分线道路施工中。沧乐分线上通行的大型运输车占比超六成，长期的重载碾压让路面病害频发。“使用这款沥青，不仅能解决重载路段夏天软塌顽疾，还能减少冬季路面裂缝。”崔世媛介绍。“作为传统沥青生产企业，要想实现持续发展，必须依靠创新突围。”该公司副总经理王新亮说，伦特化工集团每年将销售收入10%以上资金投入研发，紧跟国内公路建设及养护技术发展趋势，研究沥青新工艺、新材料。为推动科技创新和产业创新深度融合，他们联合交通运输部公路科学研究院、上海交通大学、同济大学等多家院校，成立沥青材料研究院，在沥青材料改性技术、高效生产工艺、智能化公路养护设备等方面发力，打通产学研用创新链条。目前，研究院已获得50余项国家专利。走进该公司展厅，如同进入一个“沥青超市”。多种沥青样本盛在玻璃瓶中，有的乌黑厚重，有的色彩亮丽；有的放在冰柜里，可耐受零下四十摄氏度低温；有的浸泡在水箱里，适配排水路面施工需求……该公司60多种沥青产品中，有不少是自主研发的高粘改性沥青、赛道专用沥青、温拌沥青等特种沥青。“针对高温重载、高寒冻土、专业赛事等不同路面需求，我们可以实现‘一路一配方’的定制化生产。”王新亮介绍。在生产车间，生产线有序运转，改性剂上料机器人在一旁供料。“上料机器人可将投料计量误差控制在0.3%以内。
四 | ”王新亮说，以前，人工拆袋、搬运、投料，需要3至4名工人连续作业，现在，车间内仅需一名工作人员巡回值守。满产状态下，全年产能达90万吨。
五 | “我们将锚定基础设施领域一站式综合解决方案提供商的目标，不断研发具有自主知识产权的特种沥青产品，积极探索低碳、环保发展模式。”王新亮表示。（乔宾娟）。
Current article:http://xia0s.yepenchunshouzuiwai.shop/cue/9g1.html
Published on:05:28:27