摘要：Rational composition design of trimetallic phosphide catalysts is of significant importance for enhanced surface reaction and efficient catalytic ***,hierarchical Co_(x)Ni_(y)Fe_(z)P with precise control of stoichiometric metallic elements(x:y:z=(1-10):(1-10):1)has been synthesized,and Co_(1.3)Ni_(0.5)Fe_(0.2)P,as the most optimal composition,exhibits remarkable catalytic activity(η=320 mV at 10 mA cm^(−2))and long-term stability(ignorable decrease after 10 h continuous test at the current density of 10 mA cm^(−2))toward oxygen evolution reaction(OER).It is found that the surface P in Co_(1.3)Ni_(0.5)Fe_(0.2)P was replaced by O under the OER *** density function theory calculations before and after long-term stability tests suggest the clear increasing of the density of states near the Fermi level of Co_(1.3)Ni_(0.5)Fe_(0.2)P/Co_(1.3)Ni_(0.5)Fe_(0.2)O,which could enhance the OH−adsorption of our electrocatalysts and the corresponding OER performance.

摘要：随着经济社会的全面发展,生态环境问题已成为制约经济和社会可持续发展的重要因素,如何基于新旧动能转换的背景,在生态修复和保护中实现经济和生态的协调发展是城市规划建设面临的一个重大挑战。文章以《临沂经开区新旧动能转换东部生态示范园区控制性详细规划》为例,在分析规划区域的区位、用地、交通和景观风貌等现状基础上,明确其总体定位,提出“转换动能—优化分区—强化交通—完善设施—保护生态—把控重点”的规划思路,探讨其控规编制的策略,以期为区域的土地使用控制、建筑建造管理、城市设计引导和配套设施控制等提供技术依据。

摘要：随着全球固体废弃物产生量的持续增长,其治理面临严峻挑战。在无废城市建设背景下,固体废弃物资源化利用的协同治理尤为重要。然而,现有的相关治理体系在协同机制和政策支持方面存在不足,不同主体之间的利益矛盾较为突出。本研究构建“政府-固体废弃物产生企业-固体废弃物利用企业”演化博弈模型,模拟固体废弃物资源化利用场景,分析均衡策略的演化稳定条件、关键参数及其变化对博弈行为与策略演化的影响。研究发现:(1)政府的政策制定受企业行为的影响,应综合平衡环境效益与经济成本,并通过合理的激励机制促进企业合作;(2)固体废弃物产生企业与利用企业的合作关系直接影响资源化效率,合作策略可以通过政策、市场和技术因素得到稳定;(3)跨主体协同可以显著提高资源化利用各环节的经济效益,政策支持和技术创新将推动固体废弃物管理向更高效、可持续方向发展。因此,固体废弃物资源化和协同治理的政策设计应更加注重激励机制和利益平衡。

摘要：Effective separation of photogenerated carriers plays a vital role in governing the efficiency of photo-electrocatalytic ***,the advancement in enhancing the intrinsic carrier separation efficiency of semiconductors has shown limited ***,we reported the use of a magnetic field to improve the photoelectrochemical water splitting of a magnetic Co_(3)O_(4)/TiO_(2)photoanode by boosting the photogenerated carrier separation *** the presence of the magnetic field,oxygen evolution reaction occurs with a high photocurrent density of 0.86 mA cm^(−2)at 1.23 V versus VRHE,and an applied bias photon-to-current efficiency of 0.342%at 0.61 ***,the photoanode maintains its oxygen evolution reaction for more than 400 h with photocurrent decays by ca.10%.Observations made in this effort show that the enhancement of photo-electrocatalytic efficiency by a magnetic field is a consequence of the effect of the Lorentz force generated by the magnetic field on photogenerated carriers and ions near the Co_(3)O_(4)/TiO_(2)photoanode,which improves the carrier separation efficiency and the bubble release *** results suggest that manipulating photoelectrode carriers by using a magnetic field is a promising strategy to design high-performance photoelectrochemical for water splitting.

摘要：The three-dimensional internal flow field of centrifugal pump is complex and variable with design parameters and operation conditions. The post-processing technique named differential amplification method was proposed for the comparison study of different flow structures. The full steady flow fields of an industrial centrifugal pump working on-design and off-design points were numerically investigated by solving Reynolds average Navier-Stokes equations together with a shear-stress transport(SST) k-? turbulence model. And the numerically predicted performance curves of the studied pump agree well with test measurement results. Compared with the flow flied on design point under the help of differential amplification method, the disturbance caused by interaction between blade and volute tongue is very obvious and it extends to the diffuser pipe on the working point with 0.8 times rated flux. While on the point with 1.2 times rated flux, the flow distribution in impeller region is roughly even and it flows more to the bottom section of the diffuser pipe. The above method was proved to be good at displaying the subtle secondary flow structure changes with a higher resolution effect relative to single isolated case observation, which helps the optimization decision-making from multiple design cases.

摘要：目的研究病灶切除联合羊膜移植治疗浅层角膜营养不良的效果。设计回顾性病例系列。研究对象2009年1月-12月在北京同仁医院就诊的浅层角膜营养不良患者10例(12眼)。方法术前进行问卷调查了解眼部刺激症状,并进行评分。行视力、裂隙灯显微镜及角膜荧光素染色检查,并进行评分。行浅层病灶切除联合羊膜移植术,术后常规应用抗感染及角膜营养药物,刮除物行病理学检查。术后3个月再次行问卷调查、视力及角膜荧光素检查,观察评分变化。主要指标眼部症状,角膜荧光素染色评分,视力和组织病理学检查。结果患眼术前均有不同程度眼红、异物感、畏光、流泪等眼部刺激症状,术后3个月患者眼部刺激症状评分(4.38±1.06)较术前(12.50±1.31)有明显改善(P=0.002);术前角膜荧光素染色可见片状着染,评分为2.75±0.46,术后明显改善,评分为0.63±0.52(P=0.012)。视力由术前的平均0.06±0.03提高到术后的0.31±0.25(P=0.032)。组织病理学染色可见刮除物中粉染无定形物质沉积。结论病灶切除联合羊膜移植治疗浅层角膜营养不良可有效改善患者症状及视力。

摘要：目的总结角膜交联术治疗进展期圆锥角膜的并发症。设计回顾性病例系列。研究对象2015年1-12月北京同仁医院收治的进展期圆锥角膜患者40例(40眼)。方法回顾性分析患者术后临床资料,术前含上皮最薄角膜厚度在375~450μm,行去上皮角膜交联术。术后1天、3天、1周、1个月通过问卷调查对患者疼痛感及异物感程度进行评估,并行眼前节检查。主要指标患者治疗前后视力、眼压、眼部疼痛程度、角膜上皮修复及角膜水肿情况。结果患者术后1天存在明显疼痛感(3.19±0.37分)与异物感(3.15±0.23分),可见部分角膜上皮缺损,术后3天患者异物感(2.23±0.43分)与疼痛(2.23±0.32分)感明显减轻,且角膜上皮大部分修复;术后1周,所有患者仅有轻微异物感(0.23±0.07分)及疼痛(0.22±0.11分),角膜上皮基本修复。术后1个月患者无明显异物感及疼痛感。随访6个月,40例患者病情均得到控制,30例患者术后复查裸眼视力均有不同程度提高,35例患者矫正视力有明显提高,无角膜感染、瘢痕、溃疡、上皮缺损等并发症发生。结论角膜胶原交联术治疗进展期圆锥角膜效果好,主要并发症是术后早期疼痛及角膜上皮缺损。

摘要：目的研究强脉冲光(IPL)联合睑板腺按摩治疗白内障患者围手术期睑板腺功能障碍(MGD)相关中重度干眼的疗效。方法采用非随机对照研究设计,纳入2020年10月至2021年12月就诊于首都医科大学附属北京同仁医院计划行双眼白内障摘除联合人工晶状体(IOL)植入术并患有MGD相关中重度干眼的患者40例40眼,采用Excel随机数公式随机选择一眼纳入研究。所有患者均常规使用人工泪液治疗干眼,不定期按需接受睑板腺按摩治疗,并依据患者意愿,根据是否接受IPL治疗,分为治疗组20例20眼和对照组20例20眼。治疗组手术前进行3次IPL治疗,每2次之间间隔2周,末次治疗完成至少2周后行白内障超声乳化吸除联合IOL植入术。2个组于首诊(基线)以及白内障术前1 d(即治疗组结束IPL治疗后2周)、术后1周以及术后1个月进行评估,包括眼表疾病指数(OSDI)评分、角膜荧光素染色情况、泪液分泌试验Ⅰ(SⅠt)、泪膜破裂时间(TBUT)、泪河高度、睑板腺萎缩不同评分眼数、睑板腺排出能力不同评分眼数。结果对照组基线、术前1 d、术后1周、术后1个月OSDI评分分别为(47.83±10.17)、(47.50±10.75)、(66.08±12.68)、(67.92±16.51)分,治疗组分别为(62.50±12.04)、(20.05±4.65)、(24.75±5.98)、(12.65±3.01)分,2个组不同时间点OSDI评分总体比较,差异均有统计学意义(F_(组别)=119.351,P0.05)。结论IPL是治疗白内障围手术期MGD相关干眼的有效选择,可以有效改善白内障合并MGD相关干眼患者白内障术后的症状和体征。

摘要：目的了解自体颌下腺移植治疗重症干眼术后远期的唾液泪液成分特点,分析唾液泪液成分对角膜移植成败的影响。设计病例系列研究。研究对象19例因干眼行颌下腺移植手术成功患者。方法收集颌下腺移植手术成功患者的唾液泪液,其中7例在颌下腺移植后接受了板层角膜移植,采用实验室常规检测方法对19例样本进行生化检测。检测项目包括免疫球蛋白G(IgG)、免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、钠(Na)、钾(K)、葡萄糖(Glu)、血尿素氮(BUN)、淀粉酶(Amy)、溶菌酶(Lz)及酸碱度(pH)。19例样本按采集泪液距颌下腺移植术后时间3年为界,分为术后近期及远期两组,比较颌下腺移植术后近期及远期唾液泪液的成分。7例颌下腺移植并角膜移植患者中2例成功,5例失败,比较两者唾液泪液的成分。主要指标唾液泪液的成分及含量。结果所有检测项目在自体颌下腺移植术后的唾液泪液中均能检出,与正常泪液相比,唾液泪液的钠、溶菌酶含量低,钾、葡萄糖、淀粉酶含量高,免疫球蛋白含量及酸碱度与正常泪液相近。颌下腺移植术后近期及远期唾液泪液成分比较差异无统计学意义(P>0.05)。所有测定的泪液成分在角膜移植成功与失败病例中比较差异均无统计学意义(P>0.05)。结论自体颌下腺移植治疗重症干眼术后远期唾液泪液成分稳定,唾液泪液与正常泪液的成分存在一定差异,这种差异对角膜移植手术成败无明显影响。

摘要：An investigation into the effect of several novel well-designed guanidinium salt ionic liquids（GILs） on inhibitting tumor growth is described. The GILs which have longer alkyl chain（6-18 carbon atoms） exhibit the high cytotoxicity to Hela299, B16 and SMMC-7721 cells so as to inhibit their proliferation. The inhibitory effect of the most effective GILl2 is about 10-fold higher than that of MMC（a common chemotherapy drug in clinic）.