能量限制与有氧运动对小鼠脂肪组织ZAGmRNA表达的影响

目的:观察能量限制与有氧运动对小鼠脂肪组织ZAGmRNA表达的影响。方法:将雄性昆明小鼠(48只)随机分为对照组(C)、限能组(CR)、有氧运动组(AE)、限能+有氧运动组(CR+AE),每组12只;干预8周后测定各组小鼠的体重增加值、腹腔脂肪垫重量、血清TG、TC、LDL-C、HDL-C含量;采用实时荧光定量PCR法检测小鼠脂肪组织ZAGmRNA表达水平。结果:CR组、AE组、CR+AE组的体重增加值、腹腔脂肪垫相对重量,血清TG、TC、LDL-C含量显著低于C组,而血清HDL-C含量及脂肪组织ZAGmRNA表达水平显著高于C组(P<0.05,P<0.01);CR+AE组的脂肪组织ZAGmRNA表达水平显著高于CR组和AE组(P<0.01);脂肪组织ZAGmRNA的表达水平与体重增加值、腹腔脂肪垫相对重量、血清TG、TC含量呈显著负相关(P<0.01)。结论:合理的能量限制与有氧运动能上调小鼠脂肪组织ZAGmRNA的表达,减少内脏脂肪量,降低血脂,减轻小鼠体重。     

创新型企业的持续创新动力评价模型构建与应用

阐述了持续创新动力评价在创新型企业评价中的重要性,在遵循相关评价原则的基础上,建立了创新型企业的持续创新动力评价指标体系,运用模糊综合评价的方法建立评价模型,最后给出具体评价实例.     

民营企业信息化建设现状及对策研究

随着竞争激烈,信息化建设对民营企业发展的作用愈加重要。它可以提高民企的管理水平,增强企业核心竞争力等。本文明确了信息化建设对民营企业发展的重要性,在我国民营企业信息化建设现状的基础上,指出了民营企业信息化建设的问题所在,并提出了相应对策。     

Atomic origin of spin-valve magnetoresistance at the SrRuO3 grain boundary

Defects exist ubiquitously in crystal materials, and usually exhibit a very different nature from the bulk matrix. Hence, their presence can have significant impacts on the properties of devices. Although it is well accepted that the properties of defects are determined by their unique atomic environments, the precise knowledge of such relationships is far from clear for most oxides because of the complexity of defects and difficulties in characterization. Here, we fabricate a 36.8° SrRuO₃ grain boundary of which the transport measurements show a spin-valve magnetoresistance. We identify its atomic arrangement, including oxygen, using scanning transmission electron microscopy and spectroscopy. Based on the as-obtained atomic structure, the density functional theory calculations suggest that the spin-valve magnetoresistance occurs because of dramatically reduced magnetic moments at the boundary. The ability to manipulate magnetic properties at the nanometer scale via defect control allows new strategies to design magnetic/electronic devices with low-dimensional magnetic order.     

广西高校图书馆网上参考咨询服务现状、问题及对策

通过对广西高校图书馆网上参考咨询服务现状的调查和统计,分析了其存在的问题,并提出了广西高校图书馆网上参考咨询服务的发展对策。     

Community Engagement at an Emerging Academic Medical Library: A Three-Pronged Outreach Model

The Oakland University William Beaumont School of Medicine’s (OUWB) service-oriented mission and vision is reflected in all aspects of the school including its culture, curriculum, research, community engagement, and the OUWB Medical Library. Though starting informally, the OUWB Medical Library’s outreach program has matured and now sustains a wide array of activities each year. This outreach program has blossomed into a three-pronged model that is inclusive of activities and endeavors engaging the institution and local community: integrate, partner, and create. Among its successes and challenges, the library’s ongoing outreach efforts have showcased the value of libraries in promoting community health and meaningfully contributing to the institutional mission.     

CDIO教育模式下电子商务专业实践教学的改革对策

针对当前电子商务专业实践教学中存在的问题,提出CDIO教育模式下电子商务专业实践教学的改革对策,主要包括树立新型实践观,建立创新实验室,制定一体化的创新实践课程体系,加强双师型教师队伍建设等方面。     

探索高中历史课教学的有效性

相对于理科的教学内容,高中的历史教学内容丰富多彩,更加能够让学生产生学习兴趣。但如果缺乏灵活的教学方法,反而会使学生失去学习兴趣,因此,在教学过程中,教师要转变思想,大胆创新,提高课堂教学的有效性。     

数学软件在高职高专数学教学中的应用探讨

在高职高专数学的教学过程中把数学内容与数学软件进行有机结合是数学教学最有效的教学模式,介绍了数学软件在教学中的作用,说明了在教学过程中如何把数学知识和数学软件有效地结合起来,加强了数学教学的实用性,从而提高学生在专业学习、实际工作与生活过程中使用数学的能力．     

案例教学法在高职数学教学中的应用探索

阐述目前高职数学教学中存在的问题,针对该问题分析了案例教学的优点,并提出在高职数学教学中实施该教学法应注意的问题.最后,举例说明该教学法的应用及效果.