身延山久遠寺藏本朝文粹訓点データ集稿（一）

本データ集は、平成26年度前後期に開講した広島大学・大学院文学研究科の博士課程前期学生対象の授業において取り上げた身延山久遠寺蔵本朝文粋の訓読作業を基にしたものである

Role of soil water reservoirs and forests in regulating water resources

以湖南省土地、森林利用状况等有关资料为基础，从土壤和森林对降水形成径流的影响，调节水资源的数量和方式，防洪抗旱减灾方面的作用3个层次，详细地剖析了土壤水库和森林植被对水资源的调节作用。结果指出，土壤水库和森林植被能够调节水资源，其潜力非常大。合理利用土壤水库和森林植被可以蓄水保土减蚀，削减洪峰，减少自然灾害。 关键词：土壤水库；森林植被；水资

退田还湖政策的博弈分析

运用博弈论(Game theory)方法,探索退田还湖所涉及的利益主体之间尤其是移民安置中的的博弈关系。研究表明:退田还湖的实施以及移民安置工作必须兼顾各级地方政府以及农民的利益,必须从经济理性人的角度寻找博弈各方的行动动机,并以此为依据制订政策。单凭地方政府的力量不能完成退田还湖工程,中央政府的介入是必要的,并且要起主导作用;但单独依靠中央投入不能实现资源的最优配置。中央或上级政府应当综合考虑自身的生态防洪效益与基层政府和农民的切身经济利益,重点放在改变地方经济状况上,通过各种长期稳定的优惠政策提高基层政府主动接纳移民的积极性,这样才能顺利完成该工程

厌氧膜生物反应器在食品废水处理中的应用研究

分别采用小试规模(50 L/d)外置错流管式厌氧膜生物反应器和中试规模(20 t/d)浸没式厌氧旋转膜生物反应器进行了食品厂废水的处理实验研究.结果表明,加入超滤膜单元提高了厌氧系统的总有机物去除率及甲烷产量,使系统出水水质更加稳定;外置错流式超滤膜随运行时间的延长通量明显下降,而旋转式超滤膜可通过膜片旋转速度提高和保持膜通量;浸没式旋转膜组件的运行能耗较外置管式膜组件至少降低30%;但不同形式的厌氧膜生物反应器对氨氮和总磷去除能力有限,需进一步处理

Fabrication of GaN-based Vertical Cavity Surface Emitting Lasers

作者在我国大陆首次实现了GaN基垂直腔面发射激光器(VCSEL)的激射.首先采用金属有机物化学气相沉积(MOCVD)技术在蓝宝石衬底上进行高质量氮化物增益区的外延生长,然后在表面沉积高反射介质膜分布布拉格反射镜(DBR).将样品键合到其它支撑片上后,采用激光剥离技术将蓝宝石衬底去除.再在去除蓝宝石后露出的氮化物表面沉积第二组介质膜DBR制成VCSEL.在室温光泵条件下,观察到VCSEL的激射,激射波长449.5 nm,阈值6.5 mJ/cm2,激射峰的半高宽小于0.1 nm,这些指标达到了国际领先水平.本文为进一步研制实用化氮化物VCSEL奠定了重要的基础.GaN-based vertical surface emitting lasers(VCSELs) have potential applications in various fields such as high-density optical storage.This paper is the first report in mainland of China on lasing action of GaN-based VCSEL.High-quality nitride active gain region was grown on an Al2O3 sapphire substrate using metalorganic chemical vapor deposition(MOCVD).Then a high-reflectivity dielectric distributed Bragg reflector(DBR) was deposited on the surface.After bonding a supporting plate on the surface,the sapphire substrate was removed by a laser-lift-off method and the second dielectric DBR was deposited on the exposed GaN surface to form a VCSEL structure.Lasing action was confirmed under optical pumping at room temperature.The lasing wavelength,threshold and linewidth were 449.5 nm,6.5 mJ/cm2 and 0.1 nm,respectively.The threshold and linewidth are better than those ever reported.The result of this work laid important foundation of current-injected VCSEL based on nitride semiconductors.科技部国家高科技研究发展计划(863计划)资

Bone marrow stem cells contribute to cardioprotection in the late phase of ischemic preconditioning

Ischemic preconditioning (IPC) is a well-known innate phenomenon, in which brief exposure to sublethal ischemia protects organs from subsequent ischemia/reperfusion (I/R) injury. The protective effects after IPC occur in two distinct phases: an early phase and a late phase. However, the exact protective mechanism of IPC is not fully understood, especially in the late phase. Based on increasing evidence that bone marrow stem cells (BMSCs) can repair the injured heart, we investigated whether they also play a role in protecting the heart against I/R injury in the late phase of IPC. We observed an increase in cardioprotective factors in the serum in the early phase, but an increase in BMSCs in the circulating blood in the late phase after remote IPC. Using a heart I/R injury model, we demonstrated that the mobilized BMSCs were recruited into the injured heart and contributed to cardioprotection, especially in the late phase of IPC. Our results indicate that IPC enhances the mobilization and recruitment of BMSCs in the late phase to protect the heart against I/R injury

運動負荷心電図を用いた運動部員の心臓検診について

第4回スポーツ健康医学懇談会　平成4年3月28日(土)　東京女子医科大学臨床講堂