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Jean-Pierre V. M. Hérubel 《Learned Publishing》2023,36(2):164-170
Academic book and journal publishing constitutes the majority focus of university presses. Besides commercial scholarly publishers, academic scholars and researchers view the opportunities provided by university presses as important venues for the dissemination of their research. This discussion focuses on the disciplinary imperative to publish scholarship that is ever more fluid and specialized as academic disciplines continue to become further nuanced in their response to the increasing knowledge produced by humanities and social science inquiry. The focus is on university presses and not commercial scholarly presses, although constitute a significant locus of scholarly publishing. What are the general characteristics of academic specialization and university press publishing? Further, how is disciplinary fluidity, especially evolving specialization, reflected in university press book publishing nomenclature and how scholarship is tied to the intellectual preoccupations of academic specialization? Multi- and inter-disciplinarities further articulate disciplinary publishing, accelerating disciplinary fluidity. Examples from disciplinary and emerging configurations of disciplinary nomenclature utilized by university presses offers insight into specialization and publishing. Academic history publishing is used to illustrate newly emerging fluid disciplinary configurations. 相似文献
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不同负荷训练对大鼠骨骼肌细胞膜自由基代谢、膜流动性及Na~+-K~+-ATP酶活性的影响 总被引：4，自引：0，他引：4
探讨不同负荷游泳训练对大鼠骨骼肌细胞膜结构和功能的影响。分别测试不同负荷下膜的抗氧化酶SOD、膜脂质过氧化产物MDA、膜荧光偏振度(P)及膜Na+-K+-ATP酶活性的变化。与对照组相比,小负荷训练组骨骼肌细胞膜P值降低,膜SOD活性、Na+-K+-ATP酶活性提高,膜上MDA含量则降低;大负荷训练组较小负荷组肌膜P值增加,膜SOD活性、Na+-K+-ATP酶活性下降。适宜负荷训练可以提高骨骼肌细胞膜的抗氧化能力,改善膜脂的流动性,使膜Na+-K+-ATP酶活性增强,而过大负荷训练则使骨骼肌细胞膜的抗氧化能力、膜脂的流动性及膜酶活性降低。 相似文献
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Positive claims about place pedagogy in education are problematized through this small-scale interpretive study of internationally mobile students’ experiences of outdoor environmental education. Of specific interest in this empirical study of learners’ pedagogically constructed experiences of place are the fluid subjectivities, cultural dispositions, environmental consciences, and ecological assumptions they already bring ‘globally’ to the ‘place’ of the educational intervention, and the hybrid ‘splaces’ we conclude they then temporarily embody – at least, during and after the experience. The study empirically advances an ongoing need for post-critical inquiry in environmental research by incorporating a range of theoretical and conceptual resources that work the boundaries, ‘margins’, and tensions that lie somewhere ‘in-between’ the spatially projected place/local and planet/global discourses. 相似文献
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以超细钢铁渣粉(以下简称“超细钢渣”) 为主要掺合料制备胶凝材料,通过XRF、粒径分析、XRD分析和力学性能测试,探究超细钢渣对水泥基材料的力学性能影响。结果表明:通过机械研磨制备出的超细钢渣,其矿相成分硅酸三钙、硅酸二钙和莫来石特征峰强度最强,复掺的超细钢渣活性指数也满足国家标准。随着超细钢渣掺量增加,3 d 抗压和抗折强度均出现逐渐降低的趋势,但在外掺m (超细钢渣) ∶ m (超细矿渣)= 2:3、w复合粉=30%时,其28 d 抗压和抗折强度达到峰值,分别为8.9、53.8 MPa。超细钢渣在不同龄期水化反应程度不同,早期水化反应较低,强度较差;后期水化程度较高,且优于同标准水泥。 相似文献
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中国的经济正处于一种高速发展的阶段，本文主要对中国经济失衡问题及中国经济后续发展进行了一些探讨和预测，其中对涉及的流动性过剩及“刘易斯拐点”等问题也发表了自己的看法，希望本文能对关注中国经济发展的人士提供参考之用。 相似文献
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Jun-guo Yang Hai-ning Yu Shi-li Sun Lan-cui Zhang Guo-qing He Undurti N. Das Hui Ruan Sheng-rong Shen 《Journal of Zhejiang University. Science. B》2009,10(6):411-421
Objective: To evaluate effects of epigallocatechin-3-gallate (EGCG) on the viability, membrane properties, and zinc distribution, with and without the presence of Zn2+, in human prostate carcinoma LNCaP cells. Methods: We examined changes in cellular morphology and membrane fluidity of LNCaP cells, distribution of cellular zinc, and the incorporated portion of EGCG after treatments with EGCG, Zn2+, and EGCG+Zn2+. Results: We observed an alteration in cellular morphology and a decrease in membrane fluidity of LNCaP cells after treatment with EGCG or Zn2+. The proportion of EGCG incorporated into liposomes treated with the mixture of EGCG and Zn2+ at the ratio of 1:l was 90.57%, which was significantly higher than that treated with EGCG alone (30.33%). Electron spin resonance (ESR) studies and determination of fatty acids showed that the effects of EGCG on the membrane fluidity of LNCaP were decreased by Zn2+. EGCG accelerated the accumulation of zinc in the mitochondria and cytosol as observed by atomic absorption spectrometer. Conclusion: These results show that EGCG interacted with cell membrane,decreased the membrane fluidity of LNCaP cells, and accelerated zinc accumulation in the mitochondria and cytosol, which could be the mechanism by which EGCG inhibits proliferation of LNCaP cells. In addition, high concentrations of Zn2+ could attenuate the actions elicited by EGCG. 相似文献
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陈宝璠 《三明高等专科学校学报》2012,(6):66-71
以聚乙二醇单甲醚（MPEG－1200）与丙烯酸（从）为单体,通过酯化,合成聚乙二醇单甲醚丙烯酸酯大分子单体（MPEGAA）。再用MPEG从与丙烯酸（从）和2－丙烯酰胺－2－甲基丙烯磺酸钠（AMPS）共聚,即制得MPE—GAA－从－AMPS三元共聚聚羧酸类高效减水剂。用红外光谱（FT—IR）表征了该高效减水剂的分子结构。并重点研究了MPEG支链长度、MPEG从／从摩尔比和MPEG从／AMPS摩尔比等因素对水泥分散效果的影响．同时用SEM观察了水泥石的微观结构．进一步探讨该减水剂对水泥水化过程作用的微观机理。结果表明。该高效减水剂对水泥具有良好的分散性及分散保持性能,掺量（固掺量）为0．3％,mw/mc=0．29时,水泥净浆初始流动度为300mm。30min可达322mm,120min经时损失率只有5％。SEM分析表明,该高效减水剂对水泥水化晶体生长时形成的晶体结构更为密实有利。 相似文献
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以聚乙二醇单甲醚(MPEG-1200)与丙烯酸(AA)为单体,通过酯化,合成聚乙二醇单甲醚丙烯酸酯大分子单体(MPEGAA)。再用MPEGAA与丙烯酸(AA)和2-丙烯酰胺-2-甲基丙烯磺酸钠(AMPS)共聚,即制得MPE-GAA-AA-AMPS三元共聚聚羧酸类高效减水剂。用红外光谱(FT-IR)表征了该高效减水剂的分子结构,并重点研究了MPEG支链长度、MPEGAA/AA摩尔比和MPEGAA/AMPS摩尔比等因素对水泥分散效果的影响,同时用SEM观察了水泥石的微观结构,进一步探讨该减水剂对水泥水化过程作用的微观机理。结果表明,该高效减水剂对水泥具有良好的分散性及分散保持性能,掺量(固掺量)为0.3%,mw/mc=0.29时,水泥净浆初始流动度为300 mm,30 min可达322 mm,120 min经时损失率只有5%。SEM分析表明,该高效减水剂对水泥水化晶体生长时形成的晶体结构更为密实有利。 相似文献
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章燕 《洛阳师范学院学报》2011,30(7):39-41
身份认同问题是华裔美国文学研究的一个重点。文章着重从索绪尔、福柯等人的理论着手,论证身份认同的流动性特征,进而研究身份流动性在华裔美国文学中的体现,探讨身份认同的反本质论根源。 相似文献