太阳能空间斯特林热机性能的优化分析

建立太阳能驱动的空间斯特林热机的循环模型，应用有限时间热力学理论和太阳能集热器的辐射损失模型，研究受热阻和回热损失影响的太阳能斯特林热机循环性能，导出空间热机效率的基本优化关系，确定太阳能集热器的最佳工作温度和效率界限，讨论各种不可逆性对空间热机性能的影响，所得结论可为太阳能空间斯特林热机的优化设计提供新的理论指导。     

电动车能量再生技术

1　Introduction　Therateddistanceisoneofkeyfactorstolimitthedevelopmentofelectricvehicle (EV)sinceEVwasin vented .Itisawayforincreasingtherateddistancetoputtheadvancedenergyregenerationtechnologyintouse .Manyexperimentsprovethattheactualrateddistanceofaelectricscooterunderthecityroadsur roundingsisabout 35 - 45kmwhileitisabout 5 5 - 6 5kmunderthestandard proving ground .Moreover ,JapanToyotaalsoprovedthattherateddistancecouldbeincreasedby 2 0 %whenusingtheenergyregenera tionsysteminEV .Soi…     

全球化背景下的敦煌艺术再生问题研究

敦煌艺术再生既是新的艺术品种和艺术流派的产生,又是经典艺术在新的时代背景下的价值增值。敦煌艺术再生,既是艺术的再创造和文化的自我增值,是民族文化在全球化背景下“化全球”的先声,同时也是经济文化发展的新的增长点。敦煌艺术的再生机制在于全球化背景下的民族艺术张力和人为的发掘提炼,以及市场运作。对敦煌艺术再生问题的研究应该从哲学、美学、宗教、门类艺术的不同角度,运用典型分析法展开。     

新时期企业财务管理内容探讨

分析了新时期企业财务管理目标的结构体系,阐述了企业财务再生策略,提出了企业财务管理应拓展的内容.     

Cell therapy in congestive heart failure

Congestive heart failure （CHF） has emerged as a major worldwide epidemic and its main causes seem to be the aging of the population and the survival of patients with post-myocardial infarction. Cardiomyocyte dropout （necrosis and apoptosis） plays a critical role in the progress of CHF; thus treatment of CHF by exogenous cell implantation will be a promising medical approach. In the acute phase of cardiac damage cardiac stem cells （CSCs） within the heart divide symmetrically and/or asymmetrically in response to the change of heart homeostasis, and at the same time homing of bone marrow stem cells （BMCs） to injured area is thought to occur, which not only reconstitutes CSC population to normal levels but also repairs the heart by differentiation into cardiac tissue. So far, basic studies by using potential sources such as BMCs and CSCs to treat animat CHF have shown improved ventricular remodelling and heart function. Recently, however, a few of randomized, double-blind, placebo-controlled clinical trials demonstrated mixed results in heart failure with BMC therapy during acute myocardial infarction.     

以小麦再生苗叶片为外植体的愈伤组织诱导再生培养体系建立

以小麦幼胚愈伤组织为外植体,研究继代培养时间、外源激素及叶片大小对小麦试管苗叶片愈伤组织诱导和再生的影响。结果表明：继代培养1～6个月的胚性愈伤组织,有较高的再生苗频率;当生长素浓度为2,4-D2mg／L＋NAA1mg／L、叶片高度为4cm时,小麦试管苗叶片愈伤组织的诱导率最高,从而建立了小麦试管苗叶片愈伤组织诱导和再生的培养体系。     

我国高校图书馆古籍文献保护工作研究

论述高校图书馆古籍文献保护工作面临的三大问题,探讨古籍文献“再生性保护”工作主要的技术、方法及发展方向,认为高校图书馆应着重加强和拓展古籍文献“再生性保护”工作,并应积极参与网络化共享.     

和谐与超越的仪式展演——固义傩戏的个案研究

河北省固义傩戏产生于明代中期,作为农耕文化的遗存,承载着中国文化追求和谐的价值观念。固义傩戏在自然系统、人际关系系统、有机体系统三个层面,同时取得了和谐均衡,达到了"致中和"的境界。固义傩戏不仅促成了当地村民的人格养成,而且对于社会而言,也是一种整合的力量,具有岁时"通过"与环境"重组"的双重意义。     

芡实组培快繁无菌体系的建立和优化

以芡实的单芽茎段为外植体进行离体培养和植株再生的优化研究.结果表明,以MS+6-BA1.5mg/L+NAA 0.2mg/L作增殖继代培养基为宜,以在MS培养基+蔗糖20g/L+琼脂5.0g/L中添加6-BA(0.1mg/L)+NAA(0.1mg/L)作生根培养基为宜,生根率最高.适当浓度的6-BA对芡实的不定芽增殖有明显的促进作用,6-BA和NAA配合使用可促进芽苗生长,对改善芡实植株组培苗质量有较好的作用.     

Dietary restriction (DR) and its advantages

Dietary restriction (DR) also called dietary control or calorie restriction is reported to have many advantages with regard to human health. It leads to suppression of obesity, mitigates free radicals and increases available antioxidants which are accounted for extending the life span of individuals. DR is also reported to induce synthesis of heat shock proteins in animals as a control mechanism against stress. Further, it is known to play a significant role in decreasing toxicity and lethality due to a variety of toxic chemicals and drugs by stimulating tissue repair damaged by the toxicants leading to restoration of intact organ and its functions. Moreover, extensive work done on animals indicate DR has an important role in suppressing certain types of cancer. In this review an effort is made to highlight the various advantages of DR from the point of human health perspective.