我国商业银行与外资银行合作探讨

在国际金融业并购的背景下 ,中国银行业面临入世后的竞争压力 ,吸收外资不仅能增强国内商业银行实力 ,更重要的是能给银行带来了先进的管理理念 ,把国内商业银行日益改造成符合国际标准的银行 ;对外资银行而言 ,与中资银行合作乃绕过管制 ,低成本向中国市场扩张 ,实现本土化发展战略的最佳选择

Progesterone regulating glutathione S-transferase Omega-1 expression in the mouse uterine luminal and glandular epithelium during preimplantation period

目的研究谷胱甘肽S-转移酶Omega-1(Gsto 1)在小鼠胚胎着床过程中的表达和孕酮的调节。方法105只CD1小鼠,分为正常妊娠模型和类固醇激素处理模型。正常妊娠模型中,收集妊娠第1~第5天子宫,采用Real-time PCR、原位杂交和Western blotting 3种方法检测Gsto1的表达变化;类固醇激素处理模型均采用卵巢切除2周后的小鼠,又分为雌孕激素处理组、孕酮处理不同时间组和孕酮受体拮抗剂Ru486处理组,所有组中的对照均用芝麻油处理。雌孕激素处理组中,收集芝麻油、雌激素、孕酮、雌激素加孕酮分别处理12h后的子宫;孕酮处理不同时间组中,收集芝麻油和孕酮分别处理1、3、12、24 h后的子宫;Ru486处理组中,收集芝麻油、Ru486、孕酮、Ru486加孕酮分别处理12 h后的子宫。类固醇激素处理模型使用Real-time PCR和Western blotting两种方法检测Gsto1的表达变化。结果 Gsto1主要在妊娠第1~4天的子宫腔上皮及腺上皮中表达,其中,妊娠第1~3天表达量较高,第4天表达量较低,第5天着床点和非着床点均不表达。孕酮诱导Gsto1的表达,雌激素不能诱导Gsto1的表达,并能抑制孕酮对Gsto1的诱导。Ru486降低孕酮对Gsto1的诱导,孕酮处理1、3、12 h均促进Gsto1的表达,但作用24 h后,抑制Gsto1的表达。结论 Gsto1在小鼠妊娠早期子宫腔上皮及腺上皮中表达,雌激素能够拮抗孕酮对Gsto1的诱导,孕酮可以通过孕酮受体调节Gsto1的表达,并且具有短时调节作用。Objective To investigate the expression and regulation of glutathione S-transferase Omega-1( Gsto1) in the mouse uterus during embryo implantation. Methods A total of 105 CD1 mice were divided into the normal pregnancy model and steriod hormone treatment model. Uterus were collected from days 1 to 5 of pregnancy in normal pregnancy model,and Gsto1 expression was detected by Real-time PCR,in situ hybridization and Western blotting. Ovariectomized mice were used in the steriod hormone model after 2 weeks,and divided into estrogen and progesterone treatment group,progesterone treatment course group,progesterone receptor antagonist Ru486 treatment group. Sesame oil was used for the control of all groups. In the estrogen and progesterone treatment group,uterus was collected after sesame oil,estrogen,progesterone,estrogen plus progesterone treatment 12 hours,respectively. In the progesterone treatment course group,uterus was collected after progesterone treatment 1 hours,3 hours,12 hours and 24 hours,respectively. In Ru486 treatment group,uterus was collected after sesame oil,Ru486,progesterone,Ru486 plus progesterone treatment 12 hours. Gsto1 expression was detected by Real-time PCR,and Western blotting in the steriod hormone model. Results Gsto1 was mainly expressed in the uterine luminal and glandular epithelium on days 1 to 4 of pregnancy. Gsto1 expression was high on day 1 to 3,but became lower onday 4. On day 5,Gsto1 expression was not detected at implantation sites and non-implantation sites. Progesterone induced Gsto1 expression. Estrogen did not induce Gsto1 expression,but inhibited the induction of progesterone on Gsto1. Ru486 reduced the induction of progesterone on Gsto1. Progesterone treatment for 1 hour,3 hours,12 hours promoted Gsto1 expression,but after 24 hours,inhibited Gsto1 expression. Conclusion This study suggests that Gsto1 is mainly expressed in the uterine luminal and glandular epithelium during preimplantation. Estrogen inhibits the induction of progesterone on Gsto1.Progesterone enhances Gsto1 expression by progesterone receptor in short time.国家自然科学基金(31401953);; 安徽省教育厅自然科学重点项目(2014A143

Preparation and Visible Light Photocatalytic Activity of Fe-N Codoped TiO_2 Nanotube Arrays

应用电化学阳极氧化法结合浸渍和退火后处理制备了fE和n共掺杂的TIO2纳米管阵列光催化剂,并用场发射扫描电镜(fESEM)、X射线衍射(Xrd)、X射线光电子能谱(XPS)和俄歇电子能谱(AES)仪对其进行了表征.结果表明,fE、n共掺杂对TIO2纳米管阵列的形貌和结构没有明显影响,fE和n均掺入了TIO2晶格.紫外-可见(uV-VIS)漫反射光谱显示fE和n共掺杂TIO2纳米管阵列的吸收带边较纯TIO2纳米管阵列和单一掺杂TIO2纳米管阵列红移,可见光吸收增强.以可见光催化降解罗丹明b(rHb)考察了材料的光催化活性,fE和n共掺杂TIO2纳米管阵列对rHb的降解速率较纯TIO2纳米管阵列和单一掺杂TIO2纳米管阵列明显提高,证明了fE、n共掺杂产生的协同效应提高了TIO2纳米管阵列在可见光照射下的光催化活性.Fe-N codoped TiO 2 nanotube arrays were fabricated by anodization of Ti,followed by wet immersion and annealing post-treatment.The doped TiO 2 nanotube array photocatalysts were characterized by field-emission scanning electron microscopy(FESEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and Auger electron spectroscopy(AES).The results indicated that Fe and N dopants had almost no effect on the morphology and structure of TiO 2 nanotube arrays,and that Fe and N were doped into the TiO 2 lattice.UV-Vis diffuse reflectance spectra showed that the absorption band edge of Fe-N codoped TiO 2 nanotube arrays exhibited a red shift compared with that of pure TiO 2 nanotube arrays and Fe-or N-doped TiO 2 nanotube arrays.The photocatalytic activity of Fe-N codoped TiO 2 nanotube arrays was evaluated by their ability to degrade rhodamine B under visible light irradiation.The degradation rate of rhodamine B over Fe-N codoped TiO 2 nanotube arrays was obviously higher than that over pure TiO 2 nanotube arrays and Fe-or N-doped TiO 2 nanotube arrays,which is attributed to the synergistic effect of the Fe and N codopants.国家自然科学基金(51072170;21021002);福建省自然科学基金(2011J01057);国家基础科学人才培养基金(J1030415)资助项目---

Preparation and Visible Light Photocatalytic Activity of Fe-N Codoped TiO2 Nanotube Arrays

Corresponding author. Email: [email protected]; Tel: +86-10-2184655[中文文摘]应用电化学阳极氧化法结合浸渍和退火后处理制备了Fe和N共掺杂的TiO2纳米管阵列光催化剂,并用场发射扫描电镜(FESEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)和俄歇电子能谱(AES)仪对其进行了表征.结果表明,Fe、N共掺杂对TiO2纳米管阵列的形貌和结构没有明显影响,Fe和N均掺入了TiO2晶格.紫外-可见(UV-Vis)漫反射光谱显示Fe和N共掺杂TiO2纳米管阵列的吸收带边较纯TiO2纳米管阵列和单一掺杂TiO2纳米管阵列红移,可见光吸收增强.以可见光催化降解罗丹明B(RhB)考察了材料的光催化活性,Fe和N共掺杂TiO2纳米管阵列对RhB的降解速率较纯TiO2纳米管阵列和单一掺杂TiO2纳米管阵列明显提高,证明了Fe、N共掺杂产生的协同效应提高了TiO2纳米管阵列在可见光照射下的光催化活性. [英文文摘]Fe-N codoped TiO2 nanotube arrays were fabricated by anodization of Ti, followed by wet immersion and annealing post-treatment. The doped TiO2 nanotube array photocatalysts were characterized by field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Auger electron spectroscopy (AES). The results indicated that Fe and N dopants had almost no effect on the morphology and structure of TiO2 nanotube arrays, and that Fe and N were doped into the TiO2 lattice. UV-Vis diffuse reflectance spectra showed that the absorption band edge of Fe-N codoped TiO2 nanotube arrays exhibited a red shift compared with that of pure TiO2 nanotube arrays and Fe- or N-doped TiO2 nanotube arrays. The photocatalytic activity of Fe-N codoped TiO2 nanotube arrays was evaluated by their ability to degrade rhodamine B under visible light irradiation. The degradation rate of rhodamine B over Fe-N codoped TiO2 nanotube arrays was obviously higher than that over pure TiO2 nanotube arrays and Fe- or N-doped TiO2 nanotube arrays, which is attributed to the synergistic effect of the Fe and N codopants.国家自然科学基金(51072170,21021002);福建省自然科学基金(2011J01057);国家基础科学人才培养基金(J1030415)资助项

中国风能资源价值评估与开发阶段划分研究

选取各省1997~2006年10年间的能源消费与经济产出数据,通过构建经济产出和能源消费之间的回归方程,并利用当量代算的方法,估算中国风能资源实际开发储量单位小时的原煤当量价值、原油当量价值和电力当量价值,分别是2006年全国GDP的527.11倍、1195.20倍、5745.82倍。构建中国风能资源开发阶段划分的指标体系,包括能源指标、风能禀赋指标和其他指标3类,对这些指标进行主成分分析和分层聚类分析,结合构建的风能开发利用阶段划分的概念函数,以省为基本尺度,对中国风能资源开发利用阶段进行划分,共分为4个阶段:优化增长阶段、快速发展阶段、缓慢增长阶段和初始发展阶段。并简单论述了每种开发阶段对风能资源开发应采取的基本发展策略

环渤海地区风能资源开发与大规模非并网风电产业基地建设

在研究环渤海地区风能资源本底资料的基础上,分析了该地区风能资源的空间分布特征,并对其开发利用价值进行评估;汇总了该地区1997年~2006年间的风电场装机情况以及对应时间序列的社会经济相关指标,总结了环渤海地区风能资源开发利用以及大规模非并网风电产业发展现状;根据风能禀赋、土地覆被类型以及已有和规划修建风电场等影响指标,以10km×10km为基本空间单元,将研究区划分为5852个基本网格,通过格网分析的方法,对环渤海地区风电场选址和大规模非并网风电产业基地建设布局适宜程度进行分级评价,将风电产业基地布局的适应性分为高度适宜区、较高适宜区、中等适宜区、较低适宜区和低度适宜区。以上述研究为基础,探讨了环渤海地区建设1850×104kW风电产业发展目标和风电场选址方案,以及相应实现的节能减排目标,提出建设环渤海地区大规模非并网风电产业基地与高耗能无碳型产业基地的设想,该基地包括辽中南及辽东半岛非并网风电产业基地、山东半岛非并网风电产业基地和冀西北非并网风电产业基地。最后提出非并网风电产业基地布局以及相关非并网风电发展政策。国家重点基础研究发展计划(973)项目(编号2007CB210306

汶川地震灾区城镇化与进城务工人员的空间分异及流向分析

通过分析汶川地震灾区51个县(市、区)的1271个乡镇城镇人口、外出进城务工人员的调研统计数据发现,汶川地震灾区城镇人口数量少,城镇化水平过低(只有19.8%),比同期全国城镇化水平低24.1个百分点,城市化发展尚处初期阶段;城镇化水平空间差异巨大,较低和低度城镇化地区占78%以上,少数民族地区的城镇化水平更加偏低。但灾区进城务工人员规模达359.31万人,相当于灾区总人口的1/5,根据各乡镇外出进城务工人员比率,将灾区进城务工人员的空间分布分为高外出区、较高外出区、中等外出区、较低外出区、低外出区共五种类型,呈现出到省外的进城务工人员多于到省内县外的进城务工人员,平原丘陵地区多于山地地区、经济相对发达地区多于经济落后地区、人口密集地区多于稀疏地区、城镇化较高地区多于较低地区、汉族地区多于少数民族地区的空间分布特征。综合分析灾区到省外务工的人员流向可知,外出到省外务工人口主要集中在广东、浙江、上海等沿海经济发达地区和山西、新疆等资源富集地区。为了提高灾区城镇化水平,建议加快灾区城乡统筹重建步伐,推进灾区进城务工人员的本土化,变灾民为市民,加大灾区灾民劳务输出的力度,多渠道扩大灾民就业,对口建立灾区劳务输出市场,确定劳务输入的重点区域。国家“十一五”科技支撑计划重大项目课题(2006BAJ05A06、2006BAJ14B03);中国科学院知识创新工程重要方向性项目(KZCX2-YW-321-05)资助~

The Preparation and Photoelectrochemical Performance of LaFeO_3-TiO_2 Nanotube Arrays

lAfEO3是一种具可见光响应的钙钛矿材料,将其与TIO2复合有望增强TIO2的可见光吸收,可有效促进光生电荷的分离.本工作采用超声浸渍处理的方法,在TIO2纳米管阵列表面复合lAfEO3颗粒,制得lAfEO3修饰的TIO2纳米管阵列光催化剂,并对其进行了表征.实验结果表明,lAfEO3有效增强了TIO2纳米管阵列在可见光区的光吸收,lAfEO3修饰的TIO2纳米管阵列光电极的光电流是TIO2纳米管阵列的7倍.这种催化剂的成功制备为可见光下降解有机污染物和光催化分解水制氢提供了一个新的途径.LaFeO3is a kind of perovskite-type material with visible light response.Coupling TiO2 with LaFeO3 is favorable to enhance the visible light absorption of TiO2 and efficiently promote the separation of photogenerated charges.In this work,LaFeO3 particles were deposited on the TiO2 nanotube arrays through ultrasonic-assisted impregnating method and LaFeO3-modified TiO2 nanotube arrays were obtained and characterized.Experimental results showed that LaFeO3 significantly enhanced the visible light absorption of TiO2 nanotube arrays,and the photo current of LaFeO3-modified TiO2 nanotube arrays was up to 7times as much as that of pure TiO2 nanotube arrays.The successful preparation of this catalyst offers a new route to photocatalytic degradation of organic pollutant and photocatalytic hydrogen production by splitting water under visible light irradiation.国家自然科学基金(21321062); 国家基础科学人才培养基金(J1310024