46 research outputs found

    现代中国文学的“形式”建构——“心灵”之于“世界”的“赋形”问题研究

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    现代中国文学肇始于作为“形式”的审美意识的觉醒,王国维以“古雅”为传统文学的“诗性”抒情形态予以了最后的总结,同时也沟通了“小说”叙事形态与现代世界的联系。新文化运动尝试以..

    现代化进程的另一面——近代以来中日“文化反哺”现象的反思

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    近代以来,中国大量输入西方文化的过程在很大程度上主要是通过以日本为"中介"这样一种极其特殊的方式来完成的,这就使得以日语"外来语"为主体的诸多"现代"观念直接成为了构建现代中国思想与学术话语体系的核心内容,这一现象既在一定程度上加速了中国的现代化进程,但同时也成为了某种潜在的阻碍力量

    研究图书馆数字资源建设的转型与发展——以中国科学院文献情报系统为例

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    [目的/意义]旨在对研究图书馆数字资源建设转型与发展,特别是开放资源触发的第二次转型与发展进行总结,以探索研究图书馆数字资源建设的未来发展方向。[方法/过程]以中国科学院文献情报系统为例,梳理其数字资源建设实践与成效,并对今后发展做出预期&mdash;&mdash;以综合科技资源、开放资源建设为转型基础,以细粒化的知识关联与呈现为发展目标。[结果/结论]研究图书馆在数字资源建设转型时会遇到诸多问题,提出以下建议:①制定明确的数字资源建设方案;②合理投入经费、人力和技术;③明确开放资源使用权益,积极推动开放获取;④加强开放资源建设的馆际合作与共享;⑤加强知识资源组织的跨界合作。</p

    Study on the Characteristics of Loss Ratio and Loading-unloading Response Ratio before Rock Failure

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    以多种岩石循环加卸载声发射试验为基础,针对岩石损耗比和加卸载响应比特性进行了研究,探索岩石在受载过程中的内部损伤演化和破坏前兆特性。结果表明,在; 循环加卸载下角岩等三种岩石损耗比变化特性一致:低应力水平阶段损耗比较大,呈明显下降趋势;中等应力水平阶段比值下降趋势较平缓;高等应力水平阶段比值; 趋于稳定,在0.08 ~; 0.10时,试样破坏。而钨钼矿等三种岩石加卸载响应比变化特性一致:低应力水平阶段卸载时几乎没有声发射,加卸载响应比较大;中等应力水平阶段卸载时声; 发射较活跃,比值下降至1左右;高等应力水平阶段卸载时声发射很活跃,当比值重新大于1时,试样破坏。试验结果都体现了岩石内部损伤从很小到稳定扩展再到; 不稳定扩展的过程。可见,损耗比和加卸载响应比的变化特性均可用于评价岩石损伤情况,也可用作岩石破坏预测的参考依据。On the basis of the acoustic emission for rock under cyclic loading and; unloading,the characteristics for the loss ratio and loading-unloading; response ratio of rocks is studied,and the evolution of the internal; damage in the course of loading and the precursor characteristics of; failure are explored. The results show that the variation; characteristics of loss ratio of three kinds of rocks like hrnfelswere; are consistent under loading and unloading conditions; The loss ratio is; relatively large in the low stress level stage,and it shows a clear; downward trend. After entering the medium stress level,the ratio; decreases with a relatively flat trend. In higher stress level,the ratio; tends to be stable,and the specimen fails at 0.08~ 0.10. At the same; time,the variation characteristics of loading-unloading response ratio; of three kinds of rocks like tungsten and molybdenum ores are; consistent. There were almost no acoustic emission at the unloading; stage in the low stress level stage,and the loading-unloading response; ratio were relatively large. Acoustic emission was more active at the; unloading stage in the medium stress level,and the ratio dropped to; about 1. In higher stress level,acoustic emission was very active at; unloading stage,and the specimen failed when the ratio increased over 1; again. The results reflect the process of rock internal damage from; small to steady expansion and then to unstable expansion. So the; variation characteristics of loss ratio and loading-unloading response; ration can be used to evaluate the damage of rock,and also can be used; as a reference for prediction of rock failure.国家十二五科技支撑计划项

    Studies on extraction of small molecule metabolites produced by marine microorganisms with macroporous adsorption resin

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    目的采用大孔吸附树脂建立海洋微生物小分子代谢产物库的粗提取方法。方法以吸附率、解吸率、蛋白与总糖吸附率、指纹图谱为评价目标,对常用的11种不同极性的大孔吸附树脂进行筛选。结果 dM11与Sd300串联吸附对发酵液中化合物的吸附率达7.528%,总糖与蛋白去除率分别为90.98%和77.69%,且此法几乎不损失乙酸乙酯萃取部分化合物。结论 dM11-Sd300串联树脂吸附法能快速有效地提取发酵液中的小分子化合物,为海洋微生物小分子代谢产物库的建立提供了实验基础。OBJECTIVE To establish a crude extraction method for the library of small molecule metabolites produced by marine microorganisms using macroporous adsorption resin( MAR).METHEDS 11 types of MARs were selected based on their adsorption rate,desorption rate,protein and polysaccharide adsorption rate.RESULTS DM11 and SD300 in series,were used to extrat small chemical molecules from bacterial fermentation liquid,by which the adsorption rate is up to 7.528%,while the removal rate of protein and polysaccharides is 90.98% and 77.69% respectively.In addition,this process barely lose compounds that extracted from ethyl acetate.CONCLUSION the approach of DM11-SD300 in series could extract small molecule metabolites from fermentation liquid rapidly and effectively,which will make a fundation to achieve the library of small molecule metabolites produced by marine microorganisms

    “反智主义”笔谈

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    “反智主义“现象在中国并不是集中出现于某个时期或某个区域的单一话题,有着“反智“倾向的文学创作在现代中国文学中其实一直都或隐或现地存在着,人们对此现象的理解也是众说纷纭。这里的一组笔谈文章从不同的角度出发,围绕“反智主义“展开讨论。其中既有对这一概念在美国的出现及其历史渊源的梳理、从宏观视野上概括分析当代中国文学中“反智主义“叙事的基本形态与理论基础,又有以个案分析的形式从正、反两方面对“反智主义“的价值取向给予的具体探讨。“反智主义“本身是一个极为复杂的问题,这里的讨论主要是为了能引起中国作家及批评家们对这一问题的广泛关注,以便能将这个问题的探索进一步引向深入

    Identification and Biological Characteristics Analysis of a Wild Pleurotus pulmonarius

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    本研究以野外采集获得的1株野生侧耳属真菌为对象,对其进行rDNA-ITS序列扩增测序并分析后初步确定其为肺形侧耳(Pleurotus; pulmonarius),并与本实验室中现有的秀珍菇菌株序列进行随机扩增多态性DNA; (RAPD)、ISSR、相关序列扩增多态性(SRAP)的综合分析后进一步确定该野生菌株与其他菌株间具有一定的遗传距离,是一株新的秀珍菇菌株。以福; 建省认定的秀珍菇品种秀迪1号为对照菌株,对该菌株进行生物学特性进行研究,结果表明,其菌丝可在温度为5~45°C的范围内生长,最适生长温度为30°; C;菌丝可生长的pH范围为pH; 3~10,最适pH值为7。在含可溶性淀粉、酵母粉为碳氮源的培养基中,菌丝生长速度快,长势好。该野生菌株生长所需的最适碳、氮源及生长条件与对照菌株; 相似,这为其进一步的驯化栽培提供一定的理论基础。In this study, a wild pleurotus strain collected in the forest was; selected as the research object. We sequenced its rDNA-ITS sequence and; analyzed the result to preliminarily classified it as Pleurotus; pulmonarius. Also, the comparision of the random amplified polymorphic; DNA (RAPD), ISSR and sequence related amplified polymorphism (SRAP) with; the strain sequence of other available Pleurotus geesteranus in our; laboratory showed that this strain had certain genetic distance with; other tested strains, which indicated that it was a new Pleurotus; geesteranus strain. The Pleurotus pulmonarius No.l approved by Fujian; province was selected as control group, and its biological; characteristics was analyzed, the result of which showed that its; mycelium could grow at a temperature of 5~45℃, and the optimum growth; temperature was 30°C. The pH range of the mycelium growth was 3 to 10,; and the optimum pH value was 7. In the substrate containing soluble; starch and yeast powder as carbon and nitrogen source, the mycelium grew; fast and good. The most suitable carbon, nitrogen sources and growth; conditions of this wild strain were similar to the control strain, which; provided a theoretical basis for the further domestication and; cultivation of this strain.福州市农业科技项

    饲喂不同浓度黄曲霉毒素B_1饲料对异育银鲫成鱼的生长和毒素积累的影响

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    以含不同浓度黄曲霉毒素B1(AFB1)的配合饲料饲喂异育银鲫(Carassius auratus gibelio)成鱼56d,研究异育银鲫成鱼[(122.3±0.7)g]生长、生理反应、肝脏组织学变化、卵巢发育以及鱼体各组织中的AFB1的毒素积累状况。实验分为5个实验组,不同实验组饲料中AFB1含量分别为0、5、20、50、500μg/kg饲料(实测值分别为2.59、4.12、12.39、46.23、454.07μg/kg饲料),每个处理3个平行。在整个实验过程中各实验组均未表现出外部形态和行为异常,各组存活率均达到100%。各实验组异育银鲫成鱼终末体重、摄食率(FR)、特定生长率(SGR)和饲料效率(FE)均无显著差异。饲料AFB1水平对异育银鲫血清总胆固醇(TC)含量、血清谷丙转氨酶(GPT)、谷草转氨酶(GOT)和碱性磷酸酶(AKP)活性均无显著影响。各毒素组血清超氧化物岐化酶(SOD)活性与对照无显著差异。各毒素组肝脏和卵巢均未见明显的组织学病理变化。肌肉和性腺中的AFB1积累量低于FDA食品安全限定标准(5μg/kg)。肝胰脏中的AFB1积累和饲料中的AFB1水平呈对数关系。饲喂AFB1≥50μg/kg饲料使异育银鲫成鱼肝脏AFB1积累超过安全限量标准。结果表明,异育银鲫成鱼至少可耐受AFB1含量达500μg/kg饲料(实测值:454.07μg/kg饲料)56d

    活心丸(浓缩丸)治疗冠心病稳定性心绞痛的多中心、随机、双盲、安慰剂对照临床研究

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    目的观察活心丸(浓缩丸)治疗冠心病稳定性心绞痛的临床疗效和安全性。方法本研究采用多中心、随机、双盲、安慰剂对照研究方法,将480例气虚血瘀型冠心病稳定性心绞痛患者以3:1比例随机分为试验组(360例)和对照组(120例)。在西医常规治疗基础上,两组患者分别服用活心丸(浓缩丸)和安慰剂,1次2粒,每日3次;疗程8周。观察两组治疗前后主要指标(心绞痛症状积分)和次要指标(包括硝酸甘油减停率、中医证候积分及生活质量评价)及安全性。结果共454例患者完成试验(试验组336例,对照组118例)。与本组治疗前比较,试验组和对照组心绞痛症状积分和中医证候积分均降低,西雅图心绞痛量表评分改善(P<0.01);与对照组治疗后比较,试验组心绞痛症状积分、中医证候积分、西雅图心绞痛量表评分改善均优于对照组(P<0.01)。试验组心绞痛症状疗效总有效率为80.95%,硝酸甘油停减率为80.70%,中医证候疗效有效率80.65%,均高于对照组[36.44%、45.07%、38.99%(χ~2=58.21、40.94、66.55,P<0.01)]。试验组中既往有心梗史患者心绞痛症状总有效率为83.22%,中医证候有效率83.22%,西雅图心绞痛量表评分为(361.74±62.10)分,均高于无心梗史患者[60.92%、66.89%、(327.95±65.07)分(χ~2=13.89、13.26,P<0.01)]。治疗过程中未发生明显不良反应。结论活心丸(浓缩丸)治疗气虚血瘀型冠心病稳定性心绞痛疗效显著,尤其适用于既往有心梗病史的冠心病稳定性心绞痛患者,无明显不良反应。国家中医药管理局资助课题(No.国中医药科2016ZX04

    The Listed Companies' Liabilities Behavior, Shareholders' Wealth and Stock Market Effect

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    本文就上市公司举债对股东财富的影响及股市效应进行了理论分析和实证检验 ,发现中国上市公司举债所产生的效应恰恰与西方国家相反 ,即借款比率与股票风险 β存在负相关关系。进一步的分析发现 ,借款负债对企业经营业绩和股东财富的波动有稳定的作用 ,但随着公司的业绩水平和市场竞争能力的变化 ,这种稳定作用的显著程度也不相同。This paper investigates into the effects of the listed companies' liabilities behavior on their shareholders' wealth,and then examines this by empirical method.The investigation finds that company's liabilities ratio negatively interrelates with stock risk β,that is contrary to the western researches.Further study reveals that,when the market economy was in prosperous position,the shareholders' wealth which should have been increased from high debt,was restrained by the increased managers moral hazards and agent costs caused by the administrative and unrational behavior of company's raising money from bank,and that when the market economy was in depression liability may provide incentive on managers in a certain extent,and holds back the descent of shareholders' wealth because of high debt.So,raising money from banks may stabilize the fluctuation of company's earnings and shareholders' wealth,but the degree of stabilization varies from the listed company's operational power and its competitive power.教育部人文社会科学重点研究基地重大项目阶段性成
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