简介:化学显现法是现今汗潜指印显现技术中最为灵敏的方法之一,可应用于渗透性或非渗透性表面的各种材料,如纸张、塑料、木制品等,而现代社会非常依赖这些材料形成的办公文件、印刷货币和包装等,因此显现纸张和相关纤维材料上汗潜指印的化学技术就显得尤为重要。显现纸张上汗潜指印的常见化学方法包括:硝酸银、茚三酮、DFO、物理显影液等显现法,但这些技术还存在不足之处,主要表现在很难显现残留物质过少的指印。而新的1,2-茚满二酮基双功能试剂旨在显现纸张上的汗潜指印,该试剂通过简明的五步操作法合成并应用改进了多金属沉积法,该试剂能够优先结合汗潜指印的脊线从而显现汗潜指印的正相。新1,2-茚满二酮基双功能试剂既能显现含有氨基酸的指印又能显现含有油脂类物质的指印,提高了显现的效率。
简介:以人工智能为代表的新质生产力逐渐成为智能时代下经济发展的强劲动力,同时也引致了智能技术对人类个体和整体合法权益的担忧.中国在多个国际场合下都提出了"以人为本、智能向善"的主张,引导全球在人工智能伦理的轨道上发展智能技术.人工智能伦理有遵循一般科技伦理原则的方面,同时更多涉及社会伦理问题及人类整体安全问题.文章通过探讨人工智能伦理的基本内涵,分析人工智能伦理审查的道德正当性与政策规范的必要性,厘清人工智能伦理审查的理论逻辑,提出人工智能伦理审查机制的构建在坚持"以人为本"的基础上确保人工智能"向善"发展,还需确保制度规范的公平公正,厘清透明度与问责制的因果联系,确保科技发展与法律关系的稳定性,在人工智能伦理审查原则中落实监管责任,适时建立审查评估制度.Abstract:The new quality of productivity represented by artificial intelligence has gradually become a strong driving force for economic development in the intelligent age,and at the same time has led to the impact of technology on indi-vidual and collective legitimate rights and interests.Different from science and technology ethics and social ethics,AI ethics is the extension and concretization of social ethics in a specific technological field.It not only has to follow the basic principles of social ethics,but also has to deal with the specific challenges and problems brought by AI technol-ogy,such as deep forgery,network fraud,and algorithmic black boxes.In the face of these problems,it is necessary to clarify...