创新劳动初探

创新劳动是指运用智能发明创造新的产品、新的劳动手段和新的制度、方法等 ,以大幅度提高生产力的活动。它与非创新劳动相比有自己独有的特点 ,即原创性、不可拟性、生产周期的不确定性和高弹性、高风险性、价值的叠加性等 ,把握这些特点有助于我们深化对马克思的劳动和劳动价值论的认识和研究。     

关于洪秀全答"商榷"者

几十年来,笔者对太平军与洪秀全的真相进行追寻,不跟风,不盲从;对洪秀全真实面目的揭示,是建立在他反社会的史实基础上的.学术的论争应当宽容,允许讲出历史的真相,由史实来说话;坚持自由探索,方能越辨越明.然而,太平天国史学会会长等却对笔者论著进行批判和"商榷",扣了不少帽子.     

Induction of hypoxia-inducible factor-1alpha in two kinds of rats asphyxiation death models

OBJECTIVE: To investigate the expression of hypoxia-inducible factor 1-alpha (HIF1-alpha) in the heart, lung, liver and kidney in rats died of two typical models of asphyxia. METHODS: Two asphyxia models were made and tissue samples of the dead rats were collected from different groups at various postmortem duration. The expression and the changes of HIF1-alpha in various tissues were examined by immunohistochemistry and image analysis techniques. Results Significant expression of HIF1-alpha was observed in the myocardial fibers, kidney cells, liver cells and lung cells in both asphyxia models, but not in the control group. The expression of HIF1-alpha in various tissues in the rat died of nitrogen gas breathing was found in the nuclei at 0 hour and the expression level decreased gradually thereafter. The HIF1-alpha expression level and duration in various tissues of the rat died of hanging were higher and longer than that of the former group, with a peak of the expression level observed 6 hours after death, and then started to decline in all tissues except the heart where the expression still showed an increase 24 hours after death. The control groups showed a steady expression in the cytoplasm but not in the nuclei. CONCLUSION: HIF1-alpha appears to be a valuable biomarker in the diagnosis of asphyxia within 24 hours after death.     

马克思主义哲学中国化研究的视野与方法

马克思主义哲学是被实践证明了的科学的世界观和方法论,马克思主义哲学中国化进行的好与不好,顺利或不顺利,直接关乎到马克思主义在中国能否实现真正的中国化———富有中国作风和中国气派,反映民族性和时代性。当前马克思主义哲学中国化过程中面临的种种困境和挑战,为一种新的研究视野与研究方法的提出提供了可能性。站在世界历史的视野,采用历史主义研究方法,马克思主义哲学中国化研究这种在视野与方法上的创新,有助于进一步推动马克思主义中国化。     

GC/MS衍生化测定精浆中游离支链氨基酸和果糖

目的 建立人精浆中支链氨基酸和果糖的气相质谱衍生化分析方法.方法 精液样本液化离心后,按精子活率的临床标准分为正常组和非正常组,经TMS微波衍生化,GC/MS分析两组支链氨基酸、果糖衍生物含量差异.结果 正常组与非正常组的缬氨酸,亮氨酸,异亮氨酸在相对含量上均有一定差异.正常组3种氨基酸相对含量高于非正常组.果糖分析观察到同样的特征,正常组相对含量高于非正常组.结论 精子活率低的精浆样本仍可检出支链氨基酸和果糖,其差异有助于无精子、少精子精斑的法医学鉴别.     

马钢500MPa级别双相钢开发实践

本文介绍了马钢500MPa级别的双相钢化学成分、生产工艺、成品的机械性能及组织的分布情况.     

Determination and validation of tetrodotoxin in human whole blood using hydrophilic interaction liquid chromatography-tandem mass spectroscopy and its application

A sensitive analytical method was developed for the quantitative determination of tetrodotoxin (TTX), a powerful sodium channel blocker, in human postmortem whole blood. The sample mixture was cleaned up using cation exchange SPE catridge after protein precipitation by methanol and then separated on a PC-HILIC (phosphorylcholine hydrophilic interaction liquid chromatography) column (150 mm × 2.0mm i.d., 5 μm) using a isocratic elution of 1% acetic acid and acetonitrile. The identification of TTX was performed on tandem mass spectrometry with electrospray ionization interface in positive ion mode. The retention time of voglibose (internal standard) and TTX was 5.1 and 6.0 min, respectively. TTX and internal standard (voglibose) were monitored and quantitated using the ion transitions: the respective precursor to product ion combinations, m/z 320/302 for TTX and m/z 268/92 for voglibose in the multiple reaction monitoring (MRM) mode. The recovery of TTX and voglibose was 61.4% and 62.8%, respectively and the good accuracy (97.7-103.9%), linearity (2-1200 ng/mL) and reproducibility were shown in this method. The limit of detection and limit of quantification were 0.32 ng/mL and 1.08 ng/mL, respectively. This method was applied in the case of three fishermen who were poisoned (including one death) by unknown fish on their boat in October 2010. In this case, the levels of TTX were 27.2, 30.0 and 29.7 ng/mL in heart blood, peripheral blood and serum of a victim, were 3.1 and 12.1 ng/mL in peripheral blood and 3.9 and 12.8 ng/mL in serum of two survivors, respectively.     

蒙古国知识产权制度分析

在世界已经进入知识经济时代的背景下,对中蒙两国在著作权法、商标法及地理标志、专利法上的具体规定进行详细的比较分析,总结了蒙古国知识产权制度的特点,并提出在中蒙两国国际贸易中我国应该采取的对策。     

硫磺制模法提取雪地足迹的优势

目的比较硫磺制模法与石膏制模法提取雪地足迹的效果。方法分别用两种制模法实验,观察比较操作流程、制模时间、细节特征反映等方面。结果硫磺制模法在雪地足迹提取的速度、细节特征反映等方面优于石膏制模法。结论与传统的石膏制模法相比,硫磺制模法更加迅速、简便,在细节特征的反映更加清晰。