PHOTOLUMINESCENCE STUDIES OF In_(0.25)Ga_(0.75)As-GaAs STRAINED QUANTUM WELLS UNDER HIGH PRESSURE

We report the results of the photoluminescence(PL)studies of the Ino.jsGao.r$As-GaAs strained quantum wells(QW’s)at 77K and at high pressures up to 5Okbar.The pressure coefficients of the T valley of(InGa)As-GaAs strained QW’s are presented for the first time.The crossover between the energy level in the well and the X valley in the barrier GaAs has been observed.The ratio of the conduction band offset to valence band offset in In_(0.25)Ga_(0.75)As-GaAs heterojunction was determined to be Qc=ΔEc:ΔEv=0.68:0.32.Some discussions about GaAs-Al0.3Ga0.7As QW’s are also presented.

打造新时代海上“枫桥经验”样板研究——基于舟山的探索与实践

海上“枫桥经验”是新时代“枫桥经验”的重要组成部分。舟山打造新时代海上“枫桥经验”样板,是坚持和发展“枫桥经验”的一个实践范例。舟山海上“枫桥经验”探索历经萌发创建阶段、发展巩固阶段和创新升级阶段,形成了五大特色经验,即以“瀛洲红帆”为载体构筑海上枫桥战斗堡垒、以“东海渔嫂”为载体探索全民共治创新模式、以“蓝色天眼”为载体提升海上智能治理水平、以“海上实名”为载体防控各类潜在安全风险、以“海陆联动”为载体强化涉海管理协作机制。在打造新时代海上“枫桥经验”样板过程中,舟山也面临一些困境,今后要进一步通过完善涉海管理模式、发挥涉海平台作用、强化涉海源头治理、构建涉海调解体系、应用涉海信息科技来提升海上社会治理水平。