Discussion on the Participation of Infantile Massage in Community Health Care

小儿推拿具有取穴少、经济安全、操作简单、家长易学等优点,适合在社区中推广。本文就其参与社区卫生服务的方式、内容、优势、问题和解决方法等方面,对实现小儿推拿“家庭化“进行论述,认为小儿推拿参与社区卫生服务最理想的方式是实现其“家庭化“,且“家庭化“的建立将是医疗技术进入社区的重要措施,是家庭卫生服务中最具特色的形式之一。Infantile massage has many advantages,for example,less acupoint selection,economic,safe,simple operation and easy to learn.It's suitable for promoting in the community.From aspects of methods,details,advantages,problems and solutions of infantile massage participating in community health service,the paper discussed infantile massage "family oriented"and thought that achieving its "family oriented"was the best way of infantile massage participating in community health service.The building of its"family oriented"was the key of medical technology entering into the community,and was one of the most unique forms of the family health service

重组毕赤酵母高密度发酵表达H5N1禽流感病毒糖蛋白

在10L发酵罐中,对高致病性禽流感病毒H5N1糖蛋白HA1在重组毕赤酵母中的表达发酵工艺进行了研究。通过分批补料培养方法探讨不同培养温度、诱导温度、补料方式、微量元素等因素对菌体的生长以及重组蛋白表达和活性的影响。结果表明,菌种培养和诱导温度均为25oC时,菌体的生长、分泌表达量和与广谱中和抗体的反应活性较好;微量元素是影响重组HA1蛋白生物活性的重要因素;通过优化高密度发酵工艺,H5N1病毒糖蛋白HA1在发酵罐中的表达量比摇瓶培养提高10.5倍,达到约120mg/L,为大规模制备高致病性禽流感病毒的HA1蛋白奠定了基础

Room-temperature quantum interference in single perovskite quantum dot junctions

钙钛矿材料由于其高量子产率、载流子迁移率和独特的光致发光特性而在光电材料领域存在诸多潜在的重要应用。研究钙钛矿材料在纳米尺度下电荷输运的独特尺寸效应对钙钛矿光电器件的设计和开发具有重要的指导意义。洪文晶教授课题组基于机械可控裂结技术自主研发了具有皮米级位移调控灵敏度和飞安级电学测量精度的精密科学仪器，对南开大学李跃龙副教授团队合成的钙钛矿量子点进行了深入表征，研究工作成功将量子干涉的研究体系拓展至在光电领域具有重要应用的钙钛矿材料领域，为未来制备基于量子干涉效应的新型钙钛矿器件提供了一种全新的思路。 这一跨学科国际合作研究工作是在化学化工学院洪文晶教授、英国Lancaster 大学物理系Colin J. Lambert教授以及南开大学电子信息与光电工程学院李跃龙副教授的共同指导下完成的。化工系硕士研究生郑海宁、Lancaster University大学Songjun Hou博士、南开大学硕士研究生辛晨光为论文第一作者。博士后林禄春，博士研究生谭志冰、郑珏婷，硕士研究生蒋枫、张珑漪，本科生何文翔、李庆民等参与了论文的研究工作。刘俊扬特任副研究员、师佳副教授和萨本栋微纳米研究院杨扬副教授也参与了部分指导工作。The studies of quantum interference effects through bulk perovskite materials at the Ångstrom scale still remain as a major challenge. Herein, we provide the observation of roomtemperature quantum interference effects in metal halide perovskite quantum dots (QDs) using the mechanically controllable break junction technique. Single-QD conductance measurements reveal that there are multiple conductance peaks for the CH3NH3PbBr3 and CH3NH3PbBr2.15Cl0.85 QDs, whose displacement distributions match the lattice constant of QDs, suggesting that the gold electrodes slide through different lattice sites of the QD via Auhalogen coupling. We also observe a distinct conductance ‘jump’ at the end of the sliding process, which is further evidence that quantum interference effects dominate charge transport in these single-QD junctions. This conductance ‘jump’ is also confirmed by our theoretical calculations utilizing density functional theory combined with quantum transport theory. Our measurements and theory create a pathway to exploit quantum interference effects in quantum-controlled perovskite materials.This work was supported by the National Key R&D Program of China (2017YFA0204902, 2014DFE60170, 2018YFB1500105), the National Natural Science Foundation of China (Nos. 21673195, 21503179, 21490573, 61674084, 61874167), the Open Fund of the Key Laboratory of Optical Information Science & Technology (Nankai University) of China, the Fundamental Research Funds for the Central Universities of China (63181321, 63191414, 96173224), and the 111 Project (B16027), the Tianjin Natural Science Foundation (17JCYBJC41400), FET Open project 767187—QuIET, the EU project BAC-TO-FUEL and the UK EPSRC projects EP/N017188/1, EP/M014452/1. 该工作得到国家重点研发计划课题（2017YFA0204902）、国家自然科学基金（21673195、21503179、21490573）、厦门大学“人工智能分析引擎”双一流重大专项等项目的资助，也得到了固体表面物理化学国家重点实验室、能源材料化学协同创新中心的支持

Determination of Alkylphenol in Water Samples by Stir Bar Sorptive Extraction Based on Poly(vinylimidazole-divinylbenzene) Monolithic Material and Liquid Chromatographic Analysis

建立了简单、快速、灵敏测定水环境中的双酚A(bPA)、辛基酚(OP)、壬基酚(nP)的方法。以聚(n-乙烯基咪唑-二乙烯基苯)整体材料为涂层的搅拌棒固相萃取技术富集目标物,然后与高效液相色谱-二极管阵列检测器联用测定水样品中烷基酚类污染物。考察了萃取时间、解析时间、样品基质的PH值、离子强度等实验条件对萃取效率的影响。在最佳条件下,3种目标化合物的线性范围是1.0~200μg/l,检出限lOd(S/n=3)在0.13~0.66μg/l之间,定量限lOQ(S/n=10)在0.44~2.19μg/l之间。在对海水和污水处理厂的实际水样测定中,3种目标化合物的不同加标水平的回收率为37.8%~101.1%。本方法具有简便、快速、高效、灵敏等优点。A method for the determination of bisphenol A,octyphenol,nonylphenol in water samples was developed using stir bar sorptive extraction(SBSE) based on poly(vinylimidazole-divinylbenzene) monolithic material(SBSEM) combined with high performance liquid chromatography with diode array detection.To achieve the optimum extraction performance,several main extraction parameters,including extraction and desorption time,pH value and contents of inorganic salt in the sample matrix,were investigated.Under the optimized experimental conditions,the method showed good linearity and repeatability,low detection limits (S/N=3) and quantification limits(S/N=10) of the proposed method for the target compounds were achieved within the range of 0.13-0.66 and 0.44-2.19 μg/L,respectively.The extraction performance of SBSEM to the target compounds was also compared with commercial SBSE which used polydimethylsiloxane as coating.The proposed method was successfully applied to the determination of the target compounds in water samples.The recoveries of spiked target compounds in real samples ranged from 37.8%-101.1%.The results indicated that the developed method possessed advantages such as sensitivity,simplicity,low cost and high feasibility.国家自然科学基金(No.20805039);福建省青年科技人才创新项目(No.2006F3117)资

Determination of Alkylphenol in Water Samples by Stir Bar Sorptive Extraction Based on Poly (vinylimidazole-divinylbenzene) Monolithic Material and Liquid Chromatographic Analysis

A method for the determination of bisphenol A, octyphenol, nonylphenol in water samples was developed using stir bar sorptive extraction(SBSE) based on poly(vinylimidazole-divinylbenzene) monolithic material (SBSFM) combined with high performance liquid chromatography with diode array detection. To achieve the optimum extraction performance, several main extraction parameters' including extraction and desorption time, pH value and contents of inorganic salt in the sample matrix, were investigated. Under the optimized experimental conditions, the method showed good linearity and repeatability, low detection limits (S/N = 3) and quantification limits (S/N = 10) of the proposed method for the target compounds were achieved within the range of 0.13 - 0.66 and 0.44 - 2.19 mu g/L, respectively. The extraction performance of SBSEM to the target compounds was also compared with commercial SBSE which used polydimethylsiloxane as coaling. The proposed method was successfully applied to the determination of the target compounds in water samples. The recoveries of spiked target compounds in real samples ranged front 37.8% - 101.1%. The results indicated that the developed method possessed advantages such as sensitivity, simplicity, low cost and high feasibility

电石水解制备复合钙基吸附剂及其循环吸附CO_2的特性

利用电石水解制乙炔工艺制备新型电石渣CaO/Ca12Al14O33复合钙基吸附剂,考察了Ca12Al14O33含量、碳酸化和煅烧再生温度对CaO转化率和多循环吸附CO2的影响,并与分析纯CaCO3和传统电石渣进行了比较,对其表面形貌、比表面积和孔结构进行了分析.结果表明,新型复合钙基吸附剂在多循环煅烧/碳酸化过程中具有较好的多循环吸附CO2的性能.Ca12Al14O33有效减缓了吸附剂烧结现象.20次循环后,自制电石渣吸附剂的CaO转化率仍保持在48%以上

Vertical distribution of zooplankton in the continental slope southwest of Nansha Islands,South China Sea

浮游动物是海洋生态系统物质和能量转移的关键环节,也是渔业资源的重要饵料,其种类组成和数量分布均有明显的垂直分层现象。利用2011年4月在南沙群岛西南大陆斜坡海域开展的18个站点90份样品的调查数据,对该海域浮游动物的垂直分布进行了研究,表明:(1)该海域浮游动物种类组成丰富,共出现18个类群580种(类);(2)浮游动物种类组成垂直变化明显,特定水层出现的种类数占总种数的43.6%,各水层均出现的种类仅占总种数的15.8%;(3)优势种组成复杂,垂直变化明显,单一种类的优势度不高;(4)浮游动物平均密度和湿重生物量分别为206.27Ind/M3、94.03Mg/M3,密度和生物量均以0~2M层和30~75M层较高,沿水深梯度的变化呈明显的双峰型;(5)浮游动物数量的垂直变化主要受温跃层影响,温跃层内浮游动物数量最高,温跃层上方和下方的水层内数量较低;(6)南沙西南大陆斜坡区浮游动物生产力水平较高,表明该海域渔业资源有一定的开发潜力。As dietary organisms of fish stocks,zooplankton is a key link of mass and energy transformation in the marine ecosystem.There are vertical changes in the species compositions and abundances of zooplankton in the water column.Based on 90samples from 18stations collected in April 2011,the vertical distribution of zooplankton in the continental slope to the southwest of Nansha Islands,South China Sea was studied.It was found that the continental slope waters are rich in zooplankton species,with a total number of 580species belonging to 18taxa being recorded.There are obvious vertical variations in the zooplankton species compositions.The numbers of zooplankton species occurring in a specific deep group could take up 43.6%of the total number of species,while the number of species occurring in all deep groups made up only 15.8%of the total number of species.There was no obvious dominant species and the dominancy of any single species was low.The overall mean density and wet biomass of zooplankton were 206.27ind/m3 and 94.03mg/m3 respectively.The higher density and biomass were found in the deep groups of 0—2mand 30—75mand the vertical distribution showed a pattern of double-humped curve.Thermocline was an important factor in the vertical distribution of zooplankton.The abundances of zooplankton in the thermocline layer were higher than those in the upper mixed layer and the water layers bellow the thermocline.Compared to the other regions in the South China Sea,zooplankton abundances were the highest in the continental slope southwest off Nansha Islands,suggesting potentials for fishery development in the region.中央级科研院所基本科研业务费专项资金(中国水产科学研究院南海水产研究所)资助项目(2012TS02); 农业部财政重大专项(NFZX2013); 国家科技支撑计划课题(2013BAD13B06

工业MNO_x颗粒催化剂的制备及其低温脱硝应用研究

以工业硫酸锰为前体,通过沉淀、洗涤、挤出、煅烧步骤批量制备了高活性颗粒状低温MNO_x脱硝催化剂(?5 mm×30 mm)。针对天然气冷热电三联供高含水低含硫烟气开展应用示范,研究催化剂在不同工况下的脱硝性能与长周期活性稳定性,结果表明:在入口NO_x浓度850~1000 mg/m~3、床层温度145~175℃、空速4405 h~(-1)工况条件下,脱硝率达到87.88%~97.47%,连续运行1180 h后脱硝效率有约3%的微弱衰减。对长周期运行后催化剂进行取样,进行XRD、BET、SEM表征及活性测试结果表明:该催化剂在该高湿烟气长时间运行中发生了一定程度的晶型转变,颗粒烧结、尺寸变大以及比表面积降低,导致其脱硝活性降低。该研究结果将为高活性锰基催化剂的制备及其低温脱硝工业应用提供参考和借鉴

工业MNO_x颗粒催化剂的制备及其低温脱硝应用研究

以工业硫酸锰为前体,通过沉淀、洗涤、挤出、煅烧步骤批量制备了高活性颗粒状低温MNO_x脱硝催化剂(?5 mm×30 mm)。针对天然气冷热电三联供高含水低含硫烟气开展应用示范,研究催化剂在不同工况下的脱硝性能与长周期活性稳定性,结果表明:在入口NO_x浓度850~1000 mg/m~3、床层温度145~175℃、空速4405 h~(-1)工况条件下,脱硝率达到87.88%~97.47%,连续运行1180 h后脱硝效率有约3%的微弱衰减。对长周期运行后催化剂进行取样,进行XRD、BET、SEM表征及活性测试结果表明:该催化剂在该高湿烟气长时间运行中发生了一定程度的晶型转变,颗粒烧结、尺寸变大以及比表面积降低,导致其脱硝活性降低。该研究结果将为高活性锰基催化剂的制备及其低温脱硝工业应用提供参考和借鉴