线性羧酸酯对锰酸锂-石墨电池低温性能的影响

以线性羧酸酯EA、EP和EB分别替代工业用1.0 mol/L LiPF6 EC/EMC/DMC(1：1：1,质量比)电解液中的DMC,配制了1.0 mol/L LiPF6 EC/EMC/EA (1：1：2,质量比)、1.0 mol/L LiPF6 EC/EMC/EP (1：1：2,质量比)和1.0 mol/L LiPF6 EC/EMC/EB (1：1：2,质量比)3种包含线性羧酸酯的电解液,采用18650全电池研究线性羧酸酯作为电解液溶剂组元对锰酸锂?石墨电池低温性能的影响。结果表明,采用3种包含线性羧酸酯的电解液,电池在?20°C、5C倍率下放电容量保持率均大于93%,而采用工业用电解液时,电池无法在?20°C、5C倍率下放电。电化学阻抗谱分析表明,在低温下电池放电容量和放电能量衰减的主要原因是电荷转移阻抗随温度的降低而增大。在3种含线性羧酸酯的电解液中,使用1.0 mol/L LiPF6 EC/EMC/EA (1：1：2,质量比)电解液的电池因具有最低的电荷转移阻抗,表现出最好的电化学性能,在?40°C下放电容量保持率大于90%,在?60°C下放电容量保持率大于44.41%。     

Rethinking non-traditional resistance at work: The case of the Indian Diaspora in Mauritius

Resistance at work can take many forms and be theorised in multiple ways. In this paper, I use postcolonial theorist Homi Bhabha's concepts of mimicry, ambivalence and hybridity to explore non-traditional forms of resistance among Indo-Mauritians working in the hotel industry. I employ a two-stage qualitative research approach by conducting focus groups in eight hotels in Mauritius followed by focused ethnography with 20 Indo-Mauritians. The findings reveal that the Indian diasporic community is actively engaging with its past (India) through the materiality of its home, its sacred space and its use of Bhojpuri to communicate. By unfolding and maintaining its difference, it is constantly demarcating its personal space from that of the Other. As this behaviour extends to the workplace, salient forms of non-traditional resistance surface in rural regions.     

线粒体与胰岛素抵抗和糖尿病关系的研究进展

2型糖尿病以胰岛素抵抗为病理基础。虽然膳食、生活方式等环境因素仍被认为是糖尿病的发病中的重要决定因素,但是糖尿病具有明显的家族遗传学基础,而线粒体基因组某些位点的点突变、缺失突变和重复突变均被证明与糖尿病发生密切相关。     

新一轮课程改革在民族地区面临的阻力与对策

新一轮课程改革自开展实施以来触及到了许多历次课程改革遗留下来的深层次问题,这些问题在新的课程改革实验中表现为各种阻力。文章提出了解决这些阻力的对策。     

超越新自由主义高等教育的边界:全球青年的抵抗和美英分裂

对比了美国和欧洲尤其是英国青年反抗新自由主义专制的斗争。首先阐述了新自由主义对高等教育的攻击,其次详细描述学生反对新自由主义专制的表现,提出应该在更宽广的视角下分析青年反抗运动,最后指出了新自由主义意识形态对美国社会和高等教育造成的危害,即消除了批判性性格塑造文化。     

结缕草基因遗传转化研究的相关进展

结缕草（Zoysia spp．）主要分布在东亚,它是当前广泛应用的有众多优良特性的暖季型草坪草．综述了结缕草植株再生体系的高效建立方法、抗性基因遗传转化及转基因结缕草对生态环境的影响。旨在为通过生物技术手段引入相关抗性基因增强结缕草的抗逆性及延长绿期等提供参考．     

纺织品传热机理的理论探讨

文章分析了纺织品传热机理。从宏观角度看，纺织品作为纺织纤维和空气的集合体，其传热途径包括传导、对流、辐射和伴随着水汽传输而发生的潜热传递；从微观角度看，纺织品是以声子作为载体实现热传导的。     

论心理辅导过程中的阻抗问题

阻抗是当事人在心理辅导过程中表现出来的反抗性、不服从、不接受或不配合治疗、缺乏治疗动机等心理现象。本文对阻抗的概念进行了阐述,并分析了产生阻抗的具体表现,分别探讨了阻抗产生的当事人和咨询师方面的原因,最后提出了解决阻抗的方法。     

What we talk about when we talk about ‘walking in the city’1

Originally published. in France in 1980 (and translated. into English in 1984), Michel de Certeau's The Practice of Everyday Life has assumed. the status of an ur-text for many cultural studies academics and students. In particular, his chapter on ‘Walking in the City’ is often cited. as a blueprint for understanding key terms in the cultural studies repertoire such as ‘power’ and ‘resistance’. This article revisits ‘Walking in the City’ in order to supplement some of the established. understandings of his work circulating in the field of cultural studies, as well as the intersecting fields of cultural geography and urban studies. The paper begins by suggesting ways in which established. understandings of Certeau's work might be usefully rethought and extended. through a consideration of differentiated. instances of walking. Critiquing the account of body-subject relations posited. by Certeau through reference to the writings of Marcel Mauss on techniques of the body and self, the author calls, in particular, for a greater consideration of the role of assemblages and affect in understanding everyday urban practices. By the conclusion of the article, the author arrives at a more nuanced. understanding of the feedback loop between the body-subject and the city, and suggests ways in which Certeau's writing on walking remains productive for those strains of cultural studies interested. in the practices of an increasingly virtualized. urban space.     

玉米苗期抗旱性鉴定研究

用叶面积、根重、保水力、水势等 1 0项农艺性状指标和生理生化指标对 6个玉米品种苗期抗旱性进行了初步研究 ,用模糊隶属法对其抗旱性做了综合评价 ,以平均抗旱隶属值对品种抗旱性强弱进行了排序。鉴定结果与实际相符