Research on Optimal Design of Campus Space Based on POE Concept: A Case Study of Anhui Xinhua College

Through the analysis of the overall landscape,revetments and roads and plant landscape,10 evaluation factors were determined.The comprehensive evaluation model for the campus space of Anhui Xinhua University was constructed by analytic hierarchy process(AHP).The results showed that revetment safety,road convenience,plant disease resistance and campus activity space were important factors affecting the spatial form planning of campus.Through the comparative analysis of the collected data,optimization suggestions were put forward to provide a basis for the establishment of“people-oriented”campus open space system.

Source apportionment of river water pollution in a typical agricultural city of Anhui Province, eastern China using multivariate statistical techniques with APCS– MLR

The deterioration of the surface water environment has become a serious challenge for water resources management due to increasing anthropogenic disturbance. Water resources protection requires control of potential pollution sources. In this study, 99 water samples were collected from a river in a typical agricultural city of Anhui Province in eastern China, and these samples were analyzed in terms of pH, electrical conductivity, and the concentrations of F-, Cl-, SO42-, Na+, K+, Mg2+, Ca2+, As, Cr, Cu, Zn, and Pb. Cluster analysis, co-occurrence network analysis, and principal component analysis/factor analysis were conducted to qualitatively identify the potential sources of river water pollution in the study area. An absolute principal component score-multiple linear regression receptor model was used to quantitatively evaluate the contribution of each source to water quality parameters. The results showed that all observed water quality indices met the quality criteria specified in the Chinese drinking water standards, except for pH, ρ(F-), ρ(SO42-), and ρ(As). The heat map showed that the frequent recharge of pollutants from the tributaries during the wet season was the main reason for the deterioration of water quality. Five sources of river water pollution were identified, and their contribution ratios in a descending order were as follows: the geogenic process (24%) > agricultural activities (21%) > poultry farming sources (17%) > domestic pollution (9%) > transportation pollution (5%). Therefore, controlling pollution from agricultural activities, strengthening the regulation of livestock farming, and improving the sewage network are the recommended strategies for improving the quality of surface water resources in this area.

Core collection construction of tea plant germplasm in Anhui Province based on genetic diversity analysis using simple sequence repeat markers

The tea plant[Camellia sinensis(L.)O.Kuntze]is an industrial crop in China.The Anhui Province has a long history of tea cultivation and has a large resource of tea germplasm with abundant genetic diversity.To reduce the cost of conservation and utilization of germplasm resources,a core collection needs to be constructed.To this end,573 representative tea accessions were collected from six major tea-producing areas in Anhui Province.Based on 60 pairs of simple sequence repeat(SSR)markers,phylogenetic relationships,population structure and principal coordinate analysis(PCoA)were conducted.Phylogenetic analysis indicated that the 573 tea individuals clustered into five groups were related to geographical location and were consistent with the results of the PCoA.Finally,we constructed a core collection consisting of 115 tea individuals,accounting for 20%of the whole collection.The 115 core collections were considered to have a 90.9%retention rate for the observed number of alleles(Na),and Shannon’s information index(I)of the core and whole collections were highly consistent.Of these,39 individuals were preserved in the Huangshan area,accounting for 33.9%of the core collection,while only 10 individuals were reserved in the Jinzhai County,accounting for 8.9%of the core set.PCoA of the accessions in the tea plant core collection exhibited a pattern nearly identical to that of the accessions in the entire collection,further supporting the broad representation of the core germplasm in Anhui Province.The results demonstrated that the core collection could represent the genetic diversity of the original collection.Our present work is valuable for the high-efficiency conservation and utilization of tea plant germplasms in Anhui Province.

Species and Control Techniques of Main Diseases and Insect Pests of Camellia oleifera in Anhui Province

[Objectives]The paper was to master the species,incidence regularity and control techniques of main diseases and insect pests of Camellia oleifera in Anhui Province.[Methods]The species of main diseases and insect pests of C.oleifera in major C.oleifera afforestation bases and seedling bases in Anhui Province were investigated through field survey and literature search.Afterwards,the symptom characteristics,occurrence regularity and harms of diseases and insect pests were analyzed,and scientific and reasonable control techniques were put forward.[Results]The main diseases of C.oleifera in Anhui Province were soft rot disease,blister blight,anthracnose,sooty blotch,etc.,and the main insect pests were Euproctis pseudoconspersa,Biston marginata,Hypomeces squamosus,Curculio chinensts,Chrenoma atritarsis,etc.The control techniques mainly included ecological regulation,physical prevention and control,chemical prevention and control,and biological prevention and control.[Conclusions]The results will promote the high-quality development of C.oleifera industry in Anhui Province,and contribute to the improvement of China s edible vegetable oil supply and national grain and oil security.

绿茶及其副产物在蛋鸡生产中的应用研究进展

在饲料禁抗和畜禽绿色健康养殖的趋势下,研究和开发新型植物源饲料原料和饲料添加剂备受关注。绿茶及其副产物含有茶多酚、茶多糖、茶氨酸和咖啡碱等多种生物活性物质,具有抗氧化、抗菌、降血脂和改善肉蛋品质等生理功能以及作为一种植物源饲料或添加剂在畜禽生产中应用的潜在价值。文章综述了绿茶及其副产物的营养成分、生物活性物质与生理功能及其在蛋鸡生产中的应用研究进展,旨在为其在蛋鸡生产中的应用提供参考。

Exploration of Sponge System Design in Wetland Parks Based on Rainwater and Flood Control: A Case Study of Southern Anhui Province

Based on the background that wetland resources in China are under threat and urgently need to be protected,a series of rainwater and flood problems caused by urban construction is analyzed comprehensively,and the design and planning methods of wetland parks in response to rainwater and flood disasters caused by floods and heavy rainfall are explored.Southern Anhui with complex and variable terrain and frequent rainfall and flood disasters is selected as the research area,with Xuanzhou District of Xuancheng City as the main research object.The relationship between municipal drainage of urban park and water conservancy drainage is investigated from different sample selection,design samples,and design flow rates.Based on literature review and model building methods,an urban storm flood model suitable for typical wetland parks in southern Anhui is constructed after processing the survey data using Arc GIS,SWMM(storm water management model).On this basis,a methodology and principles for designing a sponge system of wetland park based on rainwater and flood control are proposed,including technical measures such as rainwater collection,retention,and purification.This paper provides certain research results in design schemes,effect evaluations,ecological and social benefits,and useful suggestions and solutions for urban stormwater management and resilience development.

基于循证证据的脑卒中相关性肺炎预防措施在ICU急性缺血性脑卒中病人中的应用效果

目的:总结预防脑卒中相关性肺炎的循证证据并评价其临床应用效果。方法:选择2022年1月—12月安徽省某三级甲等医院神经内科ICU收治的59例急性缺血性脑卒中病人为研究对象,将2022年1月—5月收治的29例重症脑卒中病人为基线组,2022年8月—12月收治的30例重症脑卒中病人为循证实践组。以基于证据的持续质量改进模型作为理论框架,通过证据获取、现状审查、证据引入和效果评价4个阶段将脑卒中相关性肺炎预防的证据转化为临床实践。比较循证实践前后两组脑卒中病人脑卒中相关性肺炎的发生率、炎症指标和临床结局指标,以及循证实践前后医护人员预防脑卒中相关性肺炎证据认知水平变化。结果:最终纳入18条证据,并转化为10条审查指标。循证实践后,病人脑卒中相关性肺炎发生率及白细胞计数、C反应蛋白、ICU住院时间均明显降低(P<0.05)。循证实践后医护人员预防脑卒中相关性肺炎知识审查指标执行率均提高(P<0.05)。结论:以证据为基础的循证护理实践能够提高医护人员循证知识知晓率及对最佳证据的依从性,改善脑卒中病人的炎症指标,缩短ICU住院时间,降低脑卒中病人脑卒中相关性肺炎的发生率。

miR-141-3p对腰椎间盘突出症大鼠背根神经节炎症及下肢疼痛的抑制和改善作用

背景:研究表明,胰岛素样生长因子1/血小板源性生长因子有抑制纤维环细胞凋亡的作用。miR-141-3p微小RNA在骨髓基质细胞中随着年龄的增加而增加,且与炎症信号通路的活化存在一定关系,提示其可能成为腰椎间盘突出症的治疗靶点。目的:探究miR-141-3p通过调控胰岛素样生长因子1/血小板源性生长因子对腰椎间盘突出症大鼠背根神经节炎症及下肢疼痛的影响。方法:选取50只SPF级SD雄性大鼠,随机分为正常组、模型组、miR-NC组、miR-141-3p inhibitor组、miR-141-3p mimics组,每组10只。除正常组外,其余大鼠采用自体髓核移植法进行腰椎间盘突出症建模。建模成功后,对miR-NC组、miR-141-3p inhibitor组和miR-141-3p mimics组大鼠鞘内分别注射10μL 20μmol/L miR-NC,miR-141-3p inhibitor,miR-141-3p mimics,均每天注射1次,连续注射28 d;正常组、模型组同期同位置注射同体积生理盐水。采用热缩足潜伏期阈值评价大鼠下肢疼痛,实时荧光定量PCR检测背根神经节组织miR-141-3p mRNA表达,ELISA法检测背根神经节组织炎症因子,免疫印迹法检测背根神经节组织胰岛素样生长因子1/血小板源性生长因子蛋白表达,并分析miR-141-3p与胰岛素样生长因子1/血小板源性生长因子的相关性。结果与结论:miR-NC组各项指标与模型组比较,差异均无显著性意义。①大鼠热缩足潜伏期阈值:模型组明显低于正常组(P<0.05),miR-141-3p inhibitor组明显低于miR-NC组(P<0.05),miR-141-3p mimics组明显高于miR-141-3p inhibitor组(P<0.05)。②背根神经节组织miR-141-3p mRNA表达:模型组明显低于正常组(P<0.05),miR-141-3p inhibitor组明显低于miR-NC组(P<0.05),miR-141-3p mimics组明显高于miR-141-3p inhibitor组(P<0.05)。③背根神经节组织肿瘤坏死因子α、白细胞介素1β、白细胞介素1含量:模型组明显高于正常组(P<0.05),miR-141-3p inhibitor组明显高于miR-NC组(P<0.05),miR-141-3p mimics组明显低于miR-141-3p inhibitor组(P<0.05)。④背根神经节组织胰岛素样生长因子1、血小板源性生长因子蛋白表达:模型组明显低于正常组(P<0.05),miR-141-3p inhibitor组明显低于miR-NC组(P<0.05),miR-141-3p mimics组明显高于miR-141-3p inhibitor组(P<0.05)。⑤胰岛素样生长因子1与miR-141-3p呈正相关(r=0.904,P<0.001),血小板源性生长因子与miR-141-3p呈正相关(r=0.879,P<0.001)。⑥结论:miR-141-3p可显著改善腰椎间盘突出症大鼠下肢疼痛,抑制背根神经节炎症,其机制可能与促进胰岛素样生长因子1/血小板源性生长因子表达有关。

针刺联合艾灸治疗急性期周围性面瘫的疗效观察

目的 观察针刺联合艾灸治疗急性期周围性面瘫的临床疗效。方法 将60例急性期周围性面瘫患者随机分为治疗组和对照组,每组30例。对照组采用针刺联合药物治疗,治疗组在此基础上采用按摩灸治疗。观察两组治疗前后面部House-Brackmann(H-B)面神经功能分级、肌电图、面部残疾指数(facial disability index,FDI)量表评分变化,比较两组治疗前后炎性因子[超敏C反应蛋白(hypersensitive C-reactive protein,hs-CRP)、白细胞(white blood cell, WBC)计数、中性粒细胞与淋巴细胞的比值(neutrophil-to-lymphocyte ratio, NLR)和血小板与淋巴细胞的比值(platelet-to-lymphoccyte ratio, PLR)]变化,并比较两组临床疗效。结果 治疗组总有效率为96.7%,对照组总有效率为86.7%,两组比较差异有统计学意义(P<0.01)。两组治疗后H-B面神经功能分级优于治疗前(P<0.05),且治疗组的H-B面神经功能分级优于对照组(P<0.05)。两组治疗后口轮匝肌、眼轮匝肌、额肌肌电图潜伏期明显低于治疗前(P<0.05),治疗组低于对照组(P<0.01)。两组治疗后口轮匝肌、眼轮匝肌、额肌患健侧肌电图波幅比值高于治疗前(P<0.01),治疗组高于对照组(P<0.01)。两组治疗后FDI躯体功能评分(facial disability index physical function,FDIP)和社会功能评分(facial disability index social function, FDIS)评分优于治疗前(P<0.01),治疗组优于对照组(P<0.01)。两组治疗后炎性因子水平低于治疗前(P<0.05),治疗组低于对照组(P<0.05)。结论 在药物治疗的基础上,针刺联合艾灸可有效促进急性期周围性面瘫患者面神经功能和社会功能的恢复,疗效优于单纯针刺治疗,其机制可能与改善急性期面神经炎症反应有关。

高温高应变率下钛合金Ti6Al4V的动态力学行为及本构关系

采用分离式霍普金森压杆实验技术,研究了钛合金Ti6Al4V在温度为25~800℃、应变速率为2 000~7 000 s-1的冲击压缩下的动态力学行为和微观组织演变,分析了其力学响应的温度依赖性和应变率敏感性,构建了可准确表征材料塑性流动行为的修正Johnson-Cook模型。结果表明,Ti6Al4V具有显著的应变硬化、应变率强化、应变率增塑和温度软化效应。随着加载温度和应变率的升高,材料的应变硬化效应减弱。温度敏感性随加载温度的升高而显著降低。应变率敏感性因子与加载温度呈负相关,随真实应变的增大呈下降趋势。高温高应变率下细小等轴α相、拉长型α相和块状α相取代初始等轴α相成为Ti6Al4V微观组织的典型特征。考虑率-温耦合作用和绝热温升影响的修正Johnson-Cook模型能够准确地预测Ti6Al4V的塑性流动应力-应变响应。

中国大气污染防治政策与空气污染治理——基于城市级面板数据的实证研究

2013年颁布实施的《大气污染防治行动计划》是我国首个针对环境突出问题开展综合治理的行动计划;为巩固治理效果,应对动态变化的环境问题,2018年国务院进一步发布了《打赢蓝天保卫战三年行动计划》。研究利用中国258个城市2013年1月至2020年9月日度空气污染数据,实证检验了上述两阶段政策对空气质量的影响,并从不同污染物治理效果、时间和区域异质性等角度分析了政策效应的差异。结果指出:第一,“大气十条”和“蓝天保卫战”均显著降低了AQI、PM_(2.5)、PM_(10)、SO_(2)、NO_(2)、CO;第二,相比“大气十条”,“蓝天保卫战”对NO_(2)的减排效应更高,且实现对O_(3)的协同治理;第三,“大气十条”和“蓝天保卫战”对各污染物的减排效应因供暖时期、地区能源资源禀赋呈现出较强的异质性特征。

计划行为理论无痛分娩结合接生手法对初产妇分娩出血量、会阴损伤及分娩疼痛的影响

目的:探讨计划行为理论无痛分娩结合接生手法对初产妇分娩出血量、会阴损伤、分娩疼痛的影响。方法:选取2021年8月-2022年7月拟在本院接受无痛分娩的初产妇92例,根据随机数字表法分成干预组与对照组各46例,对照组给予常规分娩护理,干预组给予基于计划行为理论无痛分娩结合接生手法,比较两组出血量、产程、会阴损伤情况、简化版McGill疼痛问卷(SF-MPQ)评分及舒适度。结果:干预组产后2h(185.96±13.47ml)、24h(216.15±21.09ml)出血量均少于对照组(243.11±25.53ml、291.66±29.25ml),第一、二、三产程及总产程短于对照组,会阴损伤情况较对照组轻,SF-MPQ量表视觉模拟评分(3.15±0.88分)、疼痛分级指数(16.32±2.57分)、疼痛强度(1.83±0.45分)均低于对照组(4.67±1.12分、20.81±5.09分、2.47±0.62分),舒适状况量表评分高于对照组(均P<0.05)。结论:实施计划行为理论无痛分娩结合接生手法,能够减少初产妇分娩出血量和会阴损伤,减轻初产妇疼痛,提高身心舒适度。

农业植物病理学实验课程教学改革

为应对社会和现代农业快速发展及高校面临立德树人重要任务,总结当前农业植物病理学实验课程教学存在的问题,从教学设计、教学材料、教学方式和课程思政等方面探索农业植物病理学实验课程教学改革,提升课程教学效果,强化教书育人的责任担当,为我国农业农村建设培养新时代高素质专业人才。

钓鱼台隧道洞口崩塌成因分析与处治措施研究

对池祁高速钓鱼台隧道洞口大型崩塌的成因进行了深入分析,提出了相应的崩塌处治措施,并通过现场监测分析对崩塌处治效果进行了验证。研究结果表明,钓鱼台隧道洞口崩塌是地形、地质、降雨、施工措施不当等多种因素共同作用的结果,其中地形和地质条件是形成崩塌的内因,降雨和施工措施不当等因素是诱发崩塌的外因。基于以上影响因素并结合隧道洞口实际情况,提出了“临时支护+永久性防护”的综合处治方案,即采用洞内背拱加固、掌子面反压回填、崩塌体卸载、洞口双层小导管支护、接长明洞以及洞顶仰坡锚杆框架防护的方案。现场巡视与监测数据表明,隧道洞口崩塌处治措施得当,工程效果显著,实现了预期目的。

农业保险、农业规模经营与农业绿色发展

农业保险对农业现代化发展具有重要影响。文章从农业保险影响农业规模经营、产生增收效应和环境效应入手,采用2007—2021年省级面板数据,分析农业保险通过农业规模经营对农业绿色发展产生的影响。研究表明:农业保险是推动农业规模经营并促进农业绿色发展的重要因素;农业规模经营是农业保险助推农业绿色发展的中介机制;多维环境效应研究表明,农业保险对农业碳排放、农业化肥面源污染有重要影响;农民收入水平较低和农作物种植规模较高的地区,农业保险更有利于推动农业绿色发展。由此,提出充分发挥农业保险优势、促进农业绿色发展的建议。

遗留煤柱边界下方撤面巷道合理位置确定研究

为了确定遗留煤柱边界下方撤面巷道合理布置位置,以内蒙古某矿为研究对象,基于遗留煤柱覆岩空间结构,探究应力在底板的传递规律,通过构建“上煤层遗留煤柱传递应力-下煤层巷道掘进应力”应力叠加计算模型,分析外错距离与撤面巷道围岩安全稳定之间的关系。研究结果表明:在遗留煤柱的“支撑”作用下,煤柱煤体及其上覆岩层近似成“T”型空间结构;10 m外错距离满足现场安全生产和巷道围岩控制的要求。研究结果可为相似开采条件下的巷道稳定评估和合理位置确定提供参考。

“项目进村”对村庄治理机制的重构

“项目进村”是实现乡村产业振兴与集体经济可持续发展的关键,基于交易成本理论和治理机制的协同效应理论,结合安徽省YQ乡的案例分析,解读“项目进村”何以成功,并分析生产型治理对乡村治理机制的重构。研究发现:生产型治理通过发挥科层机制与合约机制的协同效应,能够降低项目的交易成本,实现“项目进村”;当合约机制的交易成本更低时,就会引致对科层机制的替代,但是当交易的非市场化程度较高时,就会不可避免地选择科层机制。科层机制是村庄“有项目”的基础,而合约机制的嵌入能够避免科层机制治理目标的异化,使得进村项目“得以落地”;合约机制是项目内生性嵌入村庄的过程,而通过与科层机制间的协同,能够避免合约机制治理能力的弱化,使得落地项目“得以持续”;通过生产型治理,可以从治理主体、产权结构、分配结构等方面打通乡村治理的关键痛点,为“项目进村”打下坚实的治理基础。

过表达lncRNAHEM2M改善非酒精性脂肪肝病小鼠的肝脏损伤

目的探讨过表达长链非编码RNA(lncRNA)HEM2M对非酒精性脂肪肝病(NAFLD)小鼠肝损伤的影响。方法野生型C57BL/6(WT)和条件性髓系细胞lncRNAHEM2M过表达(MYKI)小鼠分别喂饲普通饮食(ND)和高脂饮食(HFD),即为WT+ND、MYKI+ND、WT+HFD和MYKI+HFD组。12周后行腹腔糖耐量及胰岛素耐量试验后处死小鼠,检测小鼠血清和肝脏组织的肝功能指标,制备肝脏组织切片后行HE染色和F4/80免疫组化染色,ELISA法检测肝脏组织中IL-6、IL-1β和TNF-α水平,qRT-PCR检测M1型(TNF-α、iNOS和IL-6)和M2型(Arg-1、YM-1和IL-10)巨噬细胞标志物mRNA表达,免疫印迹检测肝脏组织中P-AKT、T-AKT、NLRC4、caspase-1和GSDMD蛋白表达,比色法和免疫荧光测定肝脏组织caspase-1活性。结果与HFD喂饲的WT小鼠相比,MYKI+HFD小鼠肝功能损伤减轻(P<0.01),肝脏脂肪变缓解,肝脏巨噬细胞浸润减少,糖耐量损伤及胰岛素抵抗改善(P<0.01);MYKI+HFD小鼠肝脏组织IL-6、IL-1β和TNF-α水平降低(P<0.01),M1型巨噬细胞标志物mRNA表达减少(P<0.01),M2型mRNA表达增加(P<0.01);MYKI+HFD小鼠肝脏组织NLRC4炎症小体活性降低(P<0.01),活性caspase-1减少,GSDMD-N蛋白表达降低(P<0.05)。结论过表达lncRNAHEM2M降低NAFLD小鼠肝脏炎症因子水平,进而改善胰岛素抵抗并抑制肝脏NLRC4炎症小体激活,减少肝细胞焦亡,最终改善NAFLD小鼠肝脏损伤。

组合赋权法在卷烟机综合性能评价中应用

【目的】客观准确地评价卷烟机设备性能,从质量水平、消耗水平和效能水平3个维度出发,构建设备综合性能评价指标体系和组合赋权评价模型。【方法】利用最大熵原理给出最优组合系数和方案评价计算步骤。开展Topsis方法、层次分析法、熵值法和组合赋权法在卷烟机设备综合性能评价的实例分析和比较工作。【结果】4种方法具有显著正相关关系,评价结果满足一致性。组合赋权法与其他评价方法相比具有最优组合系数和误差平方和小优势。

高效液相色谱法测定阿维巴坦钠起始物料(2S,5R)-5-[(苄氧基)氨基]哌啶-2-羧酸乙酯的含量

目的:建立测定阿维巴坦钠起始物料(2S,5R)-5-[(苄氧基)氨基]哌啶-2-羧酸乙酯含量的方法。方法:采用Hypersil ODS2色谱柱(4.6 mm×250.0 mm, 5.0μm),流动相A为0.01 mol/L磷酸二氢铵溶液,流动相B为乙腈,流动相A到流动相B(50∶50)运行时间11 min,流速为1.0 mL/min,波长为210 nm,柱温为40℃,进样量为10μL。结果:阿维巴坦钠起始物料(2S,5R)-5-[(苄氧基)氨基]哌啶-2-羧酸乙酯都得到良好的分离。结论:高效液相色谱法灵敏、快速、准确、可靠,可用于阿维巴坦钠起始物料(2S,5R)-5-[(苄氧基)氨基]哌啶-2-羧酸乙酯含量测定。