早期湿疹婴儿的气质特征研究

目的研究早期湿疹婴儿气质因子水平与分型特征，为湿疹婴儿的早期干预提供依据。方法采用1：2配比的回顾性病例对照研究，应用国内标化的小婴儿气质问卷（EITQ），对1月龄湿疹婴儿56例及112例正常婴儿进行气质因子水平及气质类型测评并比较。结果湿疹组与对照组气质类型总体分布比较，湿疹组男婴D型和I-D型明显高于对照组，E型和I-E型显著低于对照组（P＜0.001）；气质维度的单因素条件Logistic回归分析显示婴儿湿疹气质的影响因素有婴儿活动水平、节律性、适应性和反应强度四个维度（P＜0.05）；进一步气质维度的多因素条件Logistic回归分析（向后法）显示，适应性和反应强度两个维度为独立影响因素，湿疹组婴儿适应性较强、反应强度较弱。结论早期湿疹婴儿适应性较强、反应强度较弱，应根据其气质特征进行早期干预

Dynamic monitoring and analysis of land use based on RS and GIS in Zhifanggou watershed

以纸坊沟流域多年土地利用监测数据为基础 ,对其结果进行分析和讨论。结果表明 ,到 1 999年底 ,农业、林业、牧业用地面积比例分别为 1 6.9%、34.0 %、36.8%。人均基本农田由 1 975年 0 .0 5 4 7hm2 ,增到 1 999年的 0 .2 0 33hm2 ,坡耕地大幅度减少 ,粮食平均产量也由 1 975年的 5 61 kg/hm2 ,增到 1 999年的 2 31 9kg/hm2 ,流域林草有效覆盖率达到 5 7.4% ,植物种类和数量得到增加。走上了农林牧协调发展和生态环境良性循环的轨

Optimization of the Extractive Conditions of the Biogenic Silica from the Sediment in the Arctic Ocean with Orthogonal Experiment

生源硅主要来源于硅藻等生物,生源硅的积累反映上层水体中海洋生产力的时空变化,是古生产力和古气候研究的重要工具.为准确测定北极海洋沉积物中生源硅含量,优化生源硅化学提取法的提取条件,通过正交试验法,探讨了不同因素对生源硅提取效率的影响,优选出适合北极海洋沉积物中生源硅测定的实验条件.结果表明,各因素对提取效率的影响程度依次为:提取剂浓度>固液比>提取剂种类>提取温度;化学提取法的优选条件为:0.50 MOl/l氢氧化钠,固液比1.25 g/l,提取温度90℃.测得北极海洋沉积物标样中生源硅含量为57.03 Mg/g,平行误差2.51%,方法加标回收率介于76.15%--92.11%,相对标准偏差(rSd)为1.93%--7.52%.Biogenic silica(BSi) is a sort of amorphous silica from diatom,radiolarians,sponges and other siliceous organisms.BSi may reflect the spatial and temporal distribution of primary productivity and the environmental changes of aquatic systems.BSi has been widely used as a proxy of paleoceanography events and paleoclimate.In order to determinate the content of biogenic silica accurately from the sediment in the Arctic Ocean,this study used orthogonal experiment,tried to explore the influence of various factors on the determination of BSi,and then to optimize the experimental conditions.The results of orthogonal experiment show that the influence of each factor from high degree to low degree is as follows:solvent concentration > solid to liquid ratio > extraction solvents> extraction temperature.The optimized condition for the chemical extraction is suggested to be:the concentration of extraction solvent sodium hydroxide is 0.50 mol/L,the ratio of solid to liquid is 1.25 g/L and the extraction temperature is 90 ℃.The BSi content in the Arctic Ocean sediments is calculated as 57.03 mg/g(parallel error 2.51%),the ration of sample added recovery is between 76.15% and 92.11%,and the relative standard deviation is between 1.93% and 7.52%.国家自然科学基金项目(40376017;40576060

A meta-analysis on the demand rate of Traditional Chinese Medicine nursing technology for older adults (老年人中医护理技术需求率的Meta分析)

Objective To systematically evaluate the demand rate of Traditional Chinese Medicine(TCM) nursing technology for older adults in China. Methods The Web of Science, Cochrane Library, PubMed, Embase, CNKI, CQ VIP, WanFang Data and SinoMed were retrieved for researches about the need of TCM nursing technology in older adults and (or) studies on factors influencing the rate of demand. These databases were systematically searched from inception up to March 1, 2023. Two researchers independently screened and used American Agency for Health care Research and Quality scale for quality evaluation. The meta-analysis was conducted using R4. 2. 3 software. Results A total of seven articles finally were included. The random effects models were used to combine the demand rate due to high heterogeneity. The results showed that the demand rate of TCM nursing technology for older adults was 86. 0% ［95% CI (69. 0%, 94. 0%)］. The analysis results of each subgroup showed that the demand rate of TCM nursing technology for older adults was higher among those who published after 2020, adopted random sampling method, had a sample size of less than 281 cases, lied in hospitals, located in the north of the survey area, and lived in cities. Conclusion Older adults have higher demand for TCM nursing technology. Although related studies explored factors influencing the demand rate, the heterogeneity among the studies is relatively large, resulting in controversial conclusions. Therefore, it is necessary to further explore the factors influencing the demand rate of TCM nursing technology for older adults. Future studies should focus on increasing health education and practical application of TCM nursing technology for older adults in a demand-oriented manner. In addition, the advantages of TCM nursing technology should be given full play in the prevention and treatment of chronic diseases in older adults. (目的 系统评价我国老年人中医护理技术的需求率。方法 检索Web of Science(WOS)、Cochrane Library(CL)、PubMed、Embase、中国知网(CNKI)、维普中文科技期刊全文数据库(VIP)、万方数据知识服务平台(Wanfang Data)、中国生物医学文献数据库(CBM)中关于老年人中医护理技术需求和(或)影响因素的研究, 检索时间为建库至2023年3月1日, 两名研究者独立进行筛选, 采用美国卫生保健质量和研究机构(AHRQ)量表进行质量评价, 运用R 4. 2. 3软件进行Meta分析。结果 经过文献筛选, 最终纳入7篇文献。由于异质性较高, 采用随机效应模型合并。结果显示, 老年人中医护理技术需求率为86. 0%［95%CI(69. 0%, 94. 0%)］。各亚组分析结果显示, 发表年份在2020年以后、采用随机抽样方法、样本量不足281例、调查场所位于医院、调查地区位于北方以及居住在城市的老年人中医护理技术需求率较高。结论 目前老年人对中医护理技术的需求较高。虽有相关研究探究其影响因素, 但各研究之间异质性较大, 致使研究结论尚存争议。故未来需进一步探究老年人中医护理技术需求的影响因素, 以需求为导向加大对老年人中医护理技术的健康教育与实际应用, 充分发挥中医护理技术在老年慢性病防治中应用的优势作用。

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^