“喜闻乐见”的内涵及其时代语境

“喜闻乐见”是延安时期以来中国共产党对文艺作品的基本要求,具体包括对文艺内容、形式以及作为评价标准三个方面,这一要求在不同时期的政治语境中,作为文艺政策的关键词被反复重申。党的文艺政策对“喜闻乐见”的倡导、使用是与时代脉搏同步的,在不同的历史时期,总是以人民精神生活的现实需求,以及文艺工作中存在的现实问题为出发点而进行的。文艺生态多元化已然是文艺创作的现实,然而社会主义文艺事业的性质和目标,决定了处于动态社会结构中的文艺创作在“为什么人”这一根本问题上不能有所动摇。

应变速率与温度对AZ31B镁合金板材各向异性的影响

由于镁合金复杂的变形机制以及现有制备工艺不够成熟,导致其各向异性明显,力学性能不太稳定,对镁合金成形性能有较大影响,因此,对镁合金板材各向异性的深入研究具有非常重要的意义.对AZ31B镁合金轧制板材进行了单向拉伸试验,主要研究其在不同应变速率和不同温度条件下的各向异性.结果表明:室温下,AZ31B镁合金力学性能随着应变速率的变化呈现出不同程度的各向异性,且45°方向试样的力学性能优于其他两个方向的;随着温度的升高,其力学性能的变化趋势在三个方向上均一致,强度的各向异性行为逐渐减弱,当温度升高到400℃时,强度的各向异性现象基本消失.

非均匀温度场下管材轴压失稳起皱行为的影响因素

为揭示非均匀温度场下管材的轴压失稳起皱机制,利用5052铝合金管坯进行实验,研究了温度场、支撑内压、轴向压缩量及压缩速度对皱纹的形状和壁厚分布的影响。结果表明,当起皱温度达到200℃及以上时,可在轴压下形成轴对称皱纹,其形状可用GaussAmp函数准确描述,拟合度达0.99以上。随着温度的升高,皱纹高度逐渐增加;而支撑内压越高,皱纹半高宽越大;同一支撑内压下,增加轴向压缩量会使皱纹半高宽减小、高度增加。此外,压缩速度对皱纹形状几乎没有影响。无支撑内压时,在皱纹皱峰处壁厚增厚最大,皱谷次之,皱中最小;有支撑内压时,5.5 MPa内压下形成皱纹的壁厚最为均匀。

Analysis of Hidden Danger in Farmer's Rights and Interests during Farmland Transfer——An Evaluation of Rights Safeguarding Effect of Farmland Transfer Contract

Taking Shuangliu County,Chengdu City,China as an example,evaluation index system for the rights protection effects of farmland transfer is established contract from three aspects of basic information,transfer agreement and legal safeguards in the contracts.According to the investigation data,weight of evaluation index is determined by both entropy weight and Analytic Hierarchy Process.Comprehensive index method is used to evaluate the rights protection effects of farmland transfer contract in the flat dam,high hill and low hill in Shuangliu County,Chengdu,China.Result shows that the transfer agreement of farmland and the basic information of contract greatly affect the rights protection effects of farmland transfer contract.There are differences in the five indices of the information of the signature of contract,pricing for payment,time limit for farmland transfer,transfer mode of farmland,and use range of farmland transfer.During the farmland transfer in reality,there are three hidden dangers in farmer's land rights and interests,which are the ill-formed transfer behavior,the relatively low income of farmers from farmland transfer,and the quality decline of farmland and difficult full reclamation in transfer period.Based on the evaluation result and investigation data,countermeasures are put forward to improve the rights protection effects of farmland transfer contract.

The Economic Rationality and Institutional Driving Force of Edible Agro-products Enterprises Adopting ISO9000 Standards

This paper analyzed the economic rationality and institutional driving force of edible agro-products enterprises adopting ISO9000 standards,and built the theoretical analysis framework of enterprises adopting ISO9000 standards.The results indicated that the enterprises adopted ISO9000 standards form a variety of promoting product quality and safety business strategy options based on the considerations that getting economic efficiency and the access to resources.Based on the results,some recommendations were given for stimulating enterprises to adopt ISO9000 standards.

调督解郁法针刺治疗肿瘤相关性抑郁:随机对照研究

目的:观察调督解郁法针刺联合盐酸舍曲林片与单纯盐酸舍曲林片对肿瘤相关性抑郁患者的影响,探讨其作用机制。方法:将120例肿瘤相关性抑郁患者随机分为观察组和对照组,各60例。在肿瘤内科常规治疗基础上,对照组予盐酸舍曲林片口服,每次50 mg,每日1次;观察组在对照组治疗基础上加用调督解郁法针刺治疗,穴取中脘、百会、神庭、心俞、肝俞、脾俞、神门、太冲、太溪,治疗20~40 min,每日1次,每周5次,均治疗6周。观察治疗前,治疗2、4、6周后两组患者抑郁自评量表(SDS)和汉密尔顿抑郁量表(HAMD)评分及治疗前后外周血血清白细胞介素(IL)-2、IL-4、IL-10、γ干扰素(IFN-γ)、转化生长因子β(TGF-β)水平。结果:治疗2、4、6周后,两组患者SDS、HAMD评分均较治疗前降低(P<0.05),且观察组低于对照组(P<0.05)。治疗后,两组患者外周血血清IL-4、IL-10、TGF-β水平均较治疗前降低(P<0.05),且观察组低于对照组(P<0.05);外周血血清IL-2、IFN-γ水平均较治疗前升高(P<0.05),且观察组高于对照组(P<0.05)。结论:调督解郁法针刺联合盐酸舍曲林片可有效缓解肿瘤相关性抑郁患者的抑郁状态,疗效优于单纯盐酸舍曲林片,其作用机制可能与调节机体免疫相关细胞因子表达有关。