传统农业区稻田多个物种共存对病虫草害的生态控制效应——以贵州省从江县为例

本文运用半试验与调查相结合的方法,以贵州省从江县传统农业地区的糯稻和杂交稻为例,研究了传统品种和现代品种在水稻单作(R)、稻-鱼(R-F)和稻-鱼-鸭(R-F-D)3种不同稻作方式下,稻田多个物种共存对稻田生态系统主要病虫草害及蜘蛛的影响。结果表明,就水稻品种而言,糯稻在3种稻作方式下的抑制杂草能力均优于杂交稻,糯稻田与杂交稻田的稻飞虱虫量、稻纵卷叶螟虫量以及蜘蛛量差异不显著,杂交稻在3种稻作方式下的抗稻瘟病能力显著高于糯稻。就稻作方式而言,R-F-D显著降低了田间杂草的发生密度,对稻田杂草鸭舌草(Monochoria vaginalis)、节节菜(Rotala indica)等的抑制效果达到100%,总体抑制效果显著优于其它的稻作方式;R-F-D系统的稻飞虱、稻纵卷叶螟虫量较水稻单作明显减少;R-F系统的蜘蛛数量最高;R-F-D系统的抗稻瘟病性最好。     

帕金森病患者下尿路功能障碍治疗研究进展

帕金森病（Parkinson’sdisease,PD）是一种渐进的中枢神经系统退行性疾病。尽管帕金森病是以运动症状为主要特征,但其非运动症状也逐渐受到重视。帕金森病患者常常会出现下尿路功能障碍,主要症状包括尿急、尿频、夜尿症、急迫性尿失禁等,严重影响患者的生活质量。该文综述了目前临床常用的治疗策略以及一些潜在的治疗方法。     

复方丹参片早期干预对APP/PS1转基因小鼠学习记忆的影响

目的：探讨复方丹参片早期干预对APP/PS1转基因小鼠学习记忆的影响及作用机制。方法：4月龄野生型小鼠和APP/PS1转基因小鼠分别灌胃给予溶剂或药物8周后,采用新物体识别实验和跳台实验评价复方丹参片对小鼠行为学表现的影响;应用ELISA检测小鼠海马β淀粉样蛋白（β-amyloid protein,Aβ）Aβ40、Aβ42的含量;采用Real time PCR和Western blot分别检测胰岛素分解酶（insulin degrading enzyme,IDE）/脑啡肽酶（neprilysin,NEP）m RNA和蛋白水平的变化。结果：新物体识别实验结果显示,复方丹参片720 mg·kg-1显著性增加APP/PS1转基因小鼠对新物体的识别指数。跳台实验结果显示,复方丹参片720、360 mg·kg-1显著性减少APP/PS1转基因小鼠学习次数,此外,复方丹参片720 mg·kg-1明显增加小鼠在平台的停留时间。ELISA结果显示,复方丹参片720、360 mg·kg-1显著性降低APP/PS1转基因小鼠海马Aβ40、Aβ42水平。Real-time PCR结果显示,复方丹参片720 mg·kg-1显著性上调APP/PS1转基因小鼠海马IDE和NEP m RNA的表达。Western blot结果显示,复方丹参片720 mg·kg-1显著性增加小鼠海马IDE蛋白表达。结论：复方丹参片可改善APP/PS1转基因小鼠学习记忆能力,可能与减少海马Aβ水平和增加IDE的表达有关。     

沥青砼路面常见病害的分析与防治

针对目前沥青砼路面常常出现裂缝、泛油、松散、坑槽等常见病害,从原材料,施工过程、施工工艺、材料组成设计等不同方面提出了改进意见和措施。     

Evaluation of Oxidative Stress and hsCRP in Polycystic Ovarian Syndrome in a Tertiary Care Hospital

PCOS is a heterogeneous endocrine disorder with diverse clinical presentation. Oxidative stress plays a key role in the pathophysiology of this disease. Serumhigh sensitive C-reactive protein (hsCRP), a marker of chronic low grade inflammation, is indicative of future development of cardiovascular disease. Our aim is to evaluate the oxidant status and hsCRP levels in PCOS. The study involved 61 cases and 61 controls in the age group of 18–40 years diagnosed with PCOS. Erythrocyte malondialdehyde (MDA), superoxide dismutase (SOD), serum hsCRP, gonadotrophins, thyroid stimulating hormone, prolactin, glycemic status and lipid profile were estimated. Erythrocyte MDA (p < 0.001), SOD (p = 0.007) and serum hsCRP (p < 0.001) were significantly elevated in PCOS patients than controls. Oxidative stress is present in women with PCOS along with elevated hsCRP.     

针刺精灵威灵穴配合体针治疗腰部扭伤28例分析

腰部扭伤为体育运动及生活中的多发病。临床证明,针刺精灵威灵穴为主,配合体针,对多种急慢性腰部扭伤疗效显著。针刺28例,治愈23例,显效4例,好转1例,总有效率100％。     

Compensatory changes in physical activity and sedentary time in children and adolescents with cystic fibrosis

Physical activity (PA) is a key element in Cystic Fibrosis (CF) treatment strategies, yet little is known as to whether activity compensation occurs. This study examined whether PA and/or sedentary time on one day were temporally associated with time spent in these intensities the following day in youth with CF. Time spent sedentary and in different PA intensities were objectively-measured for seven consecutive days in 50 youth (22 boys; 12.0 ± 2.7 years); 25 with mild-to-moderate CF and 25 age- and sex-matched controls. Multilevel analyses (day and child) were conducted using generalised linear latent and mixed models. On any given day, every additional 10 minutes spent in sedentary time or moderate-to-vigorous physical activity (MVPA) were associated with 1.9 (95%CI: ?3.6 to ?1.2) and 12.4 (95%CI: ?22.1 to ?2.9) minutes less sedentary time the following day, respectively. These temporal associations were also observed when split by group (3.1 vs. 1.9 minutes for healthy and CF, respectively). These findings indicate that youth do not compensate their PA, irrespective of disease status, between days, but may compensate their sedentary time between days. Experimental studies are warranted to fully elucidate whether compensatory responses to PA and sedentary time occur, which is fundamental for informing PA promotion strategies.     

《左传》、《国语》的心理疾病与心理健康思想

《左传》、《国语》的心理疾病与心理健康思想是在春秋理性与迷信交织存在的时代背景下发展起来的，因而带有浓重的时代思想烙印。它记载了心疾、无慧和童昏等生理性心理疾病，描述了顽、贪琳无厌和好沽等心理性心理疾病，并对生理性与心理性心理疾病的关联有理性认识；分别论述和总结了情绪、神志等生命力、行为乃至人格等方面与心理健康的关系和影响；包含“视正听和”、日常行动不“壹”、分业居住、教育和“节”制是达到和保持心理健康途径的思想。这些对今天心理健康建设具有可贵的借鉴和指导意义。     

新冠肺炎疫情对我国上市港航及船舶制造企业财务状况的影响

为量化新冠肺炎疫情对我国水路运输企业财务状况的影响,本文基于Z score模型对构成水路运输产业链核心的港口、航运、船舶制造三类上市企业财务状况进行评价。通过对比疫情发生前后企业财务状况的变化,明确疫情在不同时期对水路运输企业财务状况的影响,以及对不同类企业带来的异质化影响。研究结果表明,在疫情发生初期我国水路运输业受到短期负面冲击较大,企业经营利润均出现明显下降,其中港口和船舶制造企业财务状况恶化较为显著,而航运企业财务状况受影响较小。随着国内疫情得到有效控制,水路运输业整体经营状况逐渐向好,特别是船舶制造企业得益于船舶订单量的增长,财务状况改善较为明显。港口企业恢复则较为疲软,且不同港口企业间的分化有所加剧。航运企业总体财务状况相对较为稳健。     

不同玉米杂交种茎腐病抗性比较研究

为了筛选对茎腐病抗性较强、产量较高的玉米杂交种,采用人工接种法研究了不同玉米杂交种对茎腐病抗病性和产量结构变化。结果表明,不同玉米杂交种对茎腐病的抗性差异较大。其中,杂交种3号达中抗（MR）,其它均为感（S）或高感（HS）;接种玉米茎腐病菌的杂交种和未接种的穗长、穗粗、行粒数、单穗重、单穗粒重和百粒重之间差异显著（P〈0．05）,而对秃顶长度、粒行数的影响不显著（P〉0．05）。杂交种3号的产量最高,明显高于郑单958,是较为理想的抗病高产新组合。