摘要：每年十一黄金周，旅游市场就进入了旺季，旅行社的生意更是蒸蒸日上。在取得利润的同时，旅行社不能忽视对游客的安全保护，尤其在中老年人加入旅行团时，一定要履行相应的告知与提示义务，为游客全心全意地设计合理的旅游路线，防止给游客的人身安全与财产造成损害。

摘要：Constructing step-scheme(S-scheme)heterojunctions can considerably facilitate separation and transfer of photocarriers,as well as promote strong redox *** interface resistance of heterojunctions immediately affects photocarrier separation and determines the photocatalytic ***,we constructed a novel Bi OBr/Ni_(2)P/g-C_(3)N_(4) heterojunction using Ni_(2)P as a novel electron bridge to reduce the interfacial resistance of photocarriers between Bi OBr and *** as-prepared 10% BiOBr/Ni2P/g-C_(3)N_(4) sample exhibited outstanding visible-light photocatalytic performance for methyl orange and rhodamine B removal,with degradation efficiencies of 91.4% and 98.9%,*** excellent photocatalytic activity of Bi OBr/Ni_(2)P/g-C_(3)N_(4) was mainly attributed to the synergistic effects of the Ni2P cocatalyst and S-scheme heterojunction,which not only reduced the interface resistance but also retained the strong redox potential of the *** addition,the formation of the S-scheme system was supported by active oxygen species investigation,current-voltage curves,and density functional theory *** work provides a guideline for the design of highly efficient S-scheme photocatalysts with transition metal phosphates as electron bridges to improve photocarriers separation.

摘要：八达岭长城,是万里长城的精华,第一批国家级文物保护单位,举世闻名的旅游胜地,体现了建筑艺术与自然景观高度合一的景观价值。然而,仍有一些不文明行为对长城造成不可逆转的破坏,如曾有“驴友”违反《长城保护条例》的规定,在其他区段的长城城楼上生火做饭。

摘要：分析化学实验是化学专业的一门基础课程,主要培养学生的分析化学基本操作技能,为后续课程的学习和实际工作打下良好的基础,但是在实验过程中存在一定的安全隐患。本文阐述了在分析化学实验过程中培养学生的安全意识的重要性以及在实验过程中可能存在的安全隐患,基于存在的安全隐患提出了相应的在分析化学实验过程中培养学生安全意识的方案,取得了较好的应用效果。

摘要：科学素质是公民素质的重要组成部分。物理学是探讨物质基本结构和运动基本规律的学科,它是实验科学,它的形成与发展是建立在观察与实验的基础上的。精心设计的实验不仅可以培养科学精神和科学态度,还可以使学生获得全面发展。本文从三个方面探讨学生在物理实验教学中科学素质的培养。