Studies on Supported Nanocatalysts for Selective Oxidation of CO and Epoxidation of Propylene in H2 and Nitrogen-Containing Porous Materials for CO2 Capture

氢气作为一种清洁且高效的二次能源，自上世纪70年代起就一直受到人们的高度重视，而临氢CO选择氧化以净化氢源是涉及氢氧质子交换膜燃料电池应用领域的一项重要技术，因此广为关注。同时，氢气也是一种常见的还原性气体，但在许多情况下，其很容易在催化剂表面与氧气反应原位生成过氧化氢物种，进而在诸多反应中表现出对环境友好的优异的催化氧化活性。另一方面，二氧化碳作为引起温室效应的主要气体，也是一种重要的碳资源，如今已成为人们关注的焦点。在减少碳基燃料消耗和增加清洁能源（如氢能源）利用的同时，发展高效、环保、节能的CO2捕获材料已成为当前人们研究的重点。本学位论文首先以临氢丙烯环氧化和CO选择氧化为目标反应，制...Hydrogen is a kind of clean and highly-efficient secondary energy, which has been drawing much attention since the 1970s. In particular, selective oxidation of CO in H2 has attracted much research interest as it is considered as the key technology to purify hydrogen for H2-O2 proton exchange membrance fuel cell. Further, hydrogen is a common reducing gas but it can react readily with oxygen and pr...学位：理学博士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：2052008015019

Biomass and growth analysis of Paspalum wettsteinii community in South Fujian, China

禾本科多年生牧草宽叶雀稗适宜在福建南亚热带丘陵酸性赤红壤上生长,人工种植的宽叶雀稗群落鲜草产量峰值在8月份,为4050g·m-2,生物量峰值(干重)则出现在9月份,其中地上部1398.8 g·m-2、地下部770.8g·m-2。群落全年生长呈周期性变化,生物量波动符合Logistic曲线:y=1634.46/(1+e2.67976-1.3.369×10-2t)。根据9月份最高现存量估计,其年净第一性生产力为2169.6g·m-2·a-1。群落生长分4个阶段:缓慢增长(2～4月)、加速增长(5～6月)、减速增长(7～9月)、生长停滞和下降(10～12月)。降雨量是影响生物量的重要因素,二者呈显著线性正相关,相关系数为0.9783,回归方程为y=-74.3779+0.9480x。Paspalum wettsteinii Hackel, a kind of perennial herbages of Graminaea, was proved to get good adaptation to hilly crimson soil in the southern part of subtropical zone in Fujian Province. Its growth curve fluctuated periodically within a year. The biomass value of above-ground part of the community reached to its highest point, 1398. 8 g m-2 in August, 1994; the under-ground part 770. 8 g m-2 in September. Biomass of the community fluctuated in accordance with the logistic curve: y=1634. 46/ (1+e2.67976-1.30369x10-2t) . The highest value of the community's fresh weights measured monthly was 4050 g m-2 (Aug. 1994) . Estimated by Peak Standing Crop in Sept. 1994, the annual NPP of the community was 2169. 6 g m-2 a-1. Through a growth analysis, the above ground part biomass of the community changes with four stages: slow increasing (Feb. -Apr. ); acceleration increasing (May-June); deceleration increasing (July-Sept. ); stagnation and descent (Oct. - Dec. ). Of all the factors that affect the biomass value, the rainfall was an important one. Their regression equation was y= - 74. 3779+0. 9480x, and the relation coefficient (r) was 0. 9783

柱层析和MALDI-TOF质谱技术筛选食道癌血清标志多肽

目的探索建立柱层析和基质辅助激光解吸电离飞行时间(MALD I-TOF)质谱技术筛选食道癌血清标志多肽的方法。方法选用Sephadex G-100葡聚糖作为分离介质,自制小型分离层析柱,分别采集30名健康人、30例食道良性疾病患者和30例食道癌患者血清进行多肽分离,结合MALD I-TOF质谱仪鉴定。结果通过多肽质荷比(m/z)比对技术,筛选出4种诊断食道癌疾病的潜在血清标志多肽,m/z分别为7 651.76、8 091.34、9 264.98、11 784.79。结论柱层析和质谱技术筛选食道癌血清标志多肽所建立的分析技术不仅快速简单,而且同样适合于筛选其他人类重大疾病的血清标志多肽或酶蛋白

Promotional Effects of Ni and Mg on the Preferential Oxidation of CO over Carbon Nanotube-Supported Pt Catalyst

采用共浸渍法制备了nI和Mg促进的碳纳米管载PT催化剂(PT-nI-Mg/CnT),考察了其对CO优先氧化的催化性能.结果表明,PT,nI和Mg在CnT表面发生了相互作用,可能存在合金纳米粒子,从而显著改善了催化剂CO优先氧化的催化性能.添加适量nI可提高CO的转化率,而加入适量Mg则有助于改善CO2的选择性.当PT,nI和Mg同时负载时,优化后所得的催化剂5%PT-5%nI-5%Mg/CnT在100°C对富H2气体中CO选择氧化的转化率为100%,CO2的选择性为53.7%;该催化剂在140°C下连续反应24H,催化活性稳定.A carbon nanotube-supported Pt catalyst promoted by Ni and Mg(Pt-Ni-Mg/CNT) was prepared by the co-impregnation method for preferential oxidation of CO in H2-rich gas.The results of X-ray diffraction, H2 temperature-programmed reduction, transmission electron microscopy, and energy dispersive spectroscopy indicated that Pt interacted with Ni and Mg on CNT surface and might form alloy nanoparticles to some extents, which in turn markedly improved the catalytic performance of preferential oxidation of CO in H2-rich gas.The results of performance tests showed that CO conversion at low temperatures could be effectively enhanced by adding a proper amount of Ni, while the selectivity was improved by adding a proper amount of Mg.When Ni and Mg were added simultaneously, the 5%Pt-5%Ni-5%Mg/CNT catalyst showed CO conversion of 100% and selectivity for CO2 of 53.7% in a H2-rich stream at 100 °C.The catalytic performance did not change obviously during 24 h of run at 140 °C.国家重点基础研究发展计划(973计划;2009CB939804);福建省科技重大专项前期项目(2009HZ10102

国内首例宫颈癌自体卵巢组织冻存移植成功妊娠

目的探讨卵巢组织冻存及自体移植手术保护子宫颈癌患者生育力与卵巢内分泌功能的疗效。方法对1例26岁子宫颈癌ⅡA1期患者在癌症手术过程中进行卵巢组织取材、冻存，待其癌症完全缓解后进行冻存卵巢组织自体移植手术，随访监测患者的绝经相关症状、激素水平及卵泡发育情况。结果卵巢组织移植第6个月卵泡刺激素降低至6.60 U/L，雌二醇由＜10.00 ng/L升高至89.00 ng/L。移植第10个月，B超监测到移植卵巢组织有卵泡发育且能完成生理排卵功能。移植第15个月，卵泡刺激素维持在7.24 U/L，雌二醇水平升至368.00 ng/L。移植2年余，患者通过辅助生殖技术成功诞下了一名健康的婴儿。结论冻存卵巢组织移植后卵巢恢复内分泌功能及排卵功能，并成功妊娠，证明卵巢组织在临床上移植成功

冬凌草甲素作用PI3K/AKT通路诱导HeLa细胞凋亡

【目的】研究冬凌草甲素诱导HeLa细胞凋亡的作用及其机制。【方法】MTT法测定冬凌草甲素对HeLa细胞的生长抑制实验,Hoechst 33342荧光染色等观察细胞核形态学变化;LDH法研究细胞死亡的途径。流式细胞仪检测细胞的凋亡,免疫印迹实验检测相关蛋白的表达。【结果】25μmol/L以上的冬凌草甲素对宫颈癌HeLa细胞具有明显的生长抑制作用,并能诱导细胞发生凋亡,随着药物浓度的增加和作用时间的延长,细胞的生长抑制率及细胞凋亡率均明显升高,冬凌草甲素抑制细胞生长及诱导细胞发生凋亡的过程中,细胞端粒酶Akt、FKHRL、GSK3表达水平及活性显著降低。【结论】冬凌草甲素能够通过诱导人子宫颈癌HeLa细胞发生凋亡而发挥抑制HeLa细胞生长作用,抑制Akt和GSK3的活性是冬凌草甲素体外诱导人子宫颈癌HeLa细胞发生凋亡的重要作用机制之一

Promotional Effects of Ni and Mg on the Preferential Oxidation of CO over Carbon Nanotube-Supported Pt Catalyst

A carbon nanotube-supported Pt catalyst promoted by Ni and Mg (Pt-Ni-Mg/CNT) was prepared by the co-impregnation method for preferential oxidation of CO in H-2-rich gas. The results of X-ray diffraction, H-2 temperature-programmed reduction, transmission electron microscopy, and energy dispersive spectroscopy indicated that Pt interacted with Ni and Mg on CNT surface and might form alloy nanoparticles to some extents, which in turn markedly improved the catalytic performance of preferential oxidation of CO in H-2-rich gas. The results of performance tests showed that CO conversion at low temperatures could be effectively enhanced by adding a proper amount of Ni, while the selectivity was improved by adding a proper amount of Mg. When Ni and Mg were added simultaneously, the 5%Pt-5%Ni-5%Mg/CNT catalyst showed CO conversion of 100% and selectivity for CO2 of 53.7% in a H-2-rich stream at 100 degrees C. The catalytic performance did not change obviously during 24 h of ran at 140 degrees C

类泛素蛋白及其中文命名

泛素家族包括泛素及类泛素蛋白,约20种成员蛋白.近年来,泛素家族领域取得了迅猛发展,并已与生物学及医学研究的各个领域相互交叉.泛素家族介导的蛋白质降解和细胞自噬机制的发现分别于2004和2016年获得诺贝尔奖.但是,类泛素蛋白并没有统一规范的中文译名. 2018年4月9日在苏州召开的《泛素家族介导的蛋白质降解和细胞自噬》专著的编委会上,部分作者讨论了类泛素蛋白的中文命名问题,并在随后的\"泛素家族、自噬与疾病\"(Ubiquitinfamily,autophagy anddiseases)苏州会议上提出了类泛素蛋白中文翻译草案,此草案在参加该会议的国内学者及海外华人学者间取得了高度共识.冷泉港亚洲\"泛素家族、自噬与疾病\"苏州会议是由美国冷泉港实验室主办、两年一度、面向全球的英文会议.该会议在海内外华人学者中具有广泛影响,因此,参会华人学者的意见具有一定的代表性.本文介绍了10个类别的类泛素蛋白的中文命名,系统总结了它们的结构特点,并比较了参与各种类泛素化修饰的酶和它们的生物学功能.文章由45名从事该领域研究的专家合作撰写,其中包括中国工程院院士1名,相关学者4名,长江学者3名,国家杰出青年科学基金获得者18名和美国知名高校华人教授4名.他们绝大多数是参加编写即将由科学出版社出版的专著《泛素家族介导的蛋白质降解和细胞自噬》的专家

Caregiver Burden in Primary Family Caregivers of Stroke Survivors: A Scoping Review​

Stroke, as one of the diseases with the highest global disability rates, not only causes severe physical and psychological harm to patients but also places a long-term and heavy burden on their primary family caregivers. With advances in medical technology, the life expectancy of stroke survivors has increased. However, most patients are left with varying degrees of functional impairment and require continuous care from family caregivers, subjecting them to multidimensional pressures—physical, emotional, financial, and social. Research indicates that the incidence of caregiver burden ranges from 25% to 54%, often persisting over the long term. This significantly impacts caregivers' quality of life and well-being, and may even lead to deterioration in their own health, social isolation, and strained family relationships. However, current research on the burden faced by stroke caregivers remains fragmented, lacking systematic scope definition and integration of influencing factors. This issue is especially pressing in China, where evolving family structures, an accelerating aging population, and an underdeveloped care support system further exacerbate the situation. Therefore, conducting a scoping review to systematically examine the current state of caregiver burden, its influencing factors, and assessment tools is essential. Such an effort will not only help identify high-risk groups and guide clinical interventions and policy-making but also serve as a necessary foundation for promoting a "family-centered" stroke rehabilitation model and improving the overall quality of care

一流课程建设的契机与思考

近年来，随着市场和社会对高技能人才的需要，引发了政府、学校教育理念的重大转变，普通高校的转型发展已迫在眉睫，这不仅使处境艰难的民办高校走出了困惑，赢得了稳步发展的机遇，同时为市场和社会受欢迎的一流专业课程的建设提供了契机。</jats:p