华侨华人学的学科定位与研究对象

本文力图从国际学术界传统学科体系的分解与整合这一角度来分析建立华侨华人学的现实性 ,并从局限性、可行性、研究对象的定位及辨识标准、研究范围、挑战与机遇等五个方面进行了分析。由于其特定的研究对象和无法进行科学抽象的特征 ,从传统的学术分类来看 ,华侨华人研究不可能成为独立的学科。然而 ,学术史的演变表明 ,一些多学科或跨学科的研究领域日益独立出来 ,这为华侨华人学的建立提供了条件。作者对“华侨华人学”下了定义 ,并提出了建立作为学科分支的华侨华人学的两种可能途径。     

中国特色社会主义文化纲领的历史发展

从改革开放之初提出"两个文明"建设,到十五大正式提出"经济、政治、文化纲领",再到十六届四中全会发展为"物质文明、政治文明、精神文明、社会文明"四位一体,实质是中国特色社会主义事业总体布局的发展过程,是在这个总体布局中社会主义精神文明建设面临新任务、扮演新角色、承担新使命的过程,是中国特色社会主义文化纲领继往开来、不断丰富发展和完善的过程,反映了中国化马克思主义文化理论一脉相承、与时俱进的理论品质和实践品质。     

The potential for abiotic organic synthesis and biosynthesis at seafloor hydrothermal systems

Calculations are presented of the extent to which chemical disequilibria are generated when submarine hydrothermal fluids mix with sea water. These calculations involve quantifying the chemical affinity for individual reactions by comparing equilibrium compositions with the compositions of mixtures in which oxidation–reduction reactions are inhibited. The oxidation–reduction reactions that depart from equilibrium in these systems provide energy for chemotrophic microbial metabolism. Methanogenesis is an example of this phenomenon, in which the combination of carbon dioxide, hydrogen and methane induced by fluid mixing is far from equilibrium, which can be approached if more methane is generated. Similarly, the production of other organic compounds is also favorable under the same conditions that permit methanogenesis. Alkanes, alkenes, alcohols, aldehydes, carboxylic acids and amino acids are among the compounds that, if formed, would lower the energetic state of the chemical composition generated in mixed fluids. The resulting positive values of chemical affinity correspond to the thermodynamic drive required for abiotic organic synthesis. It is also possible that energy release accompanies biosynthesis by chemotrophic organisms. In this way, hydrothermal ecosystems differ radically from familiar ecosystems at Earth's surface. If captured, the energy released may be sufficient to drive biosynthesis of carbohydrates, purines, pyrimidines and other compounds which require energy inputs.     

Short-chain n-alkanes (C16–20) in ancient soil are useful molecular markers for prehistoric biomass burning

The incorporation of plant biomass into soil usually leads to long-chain n-alkanes with a relative predominance of odd carbon numbered homologues. Contrastingly, an increase in short-chain even carbon numbered n-alkanes was found in charred biomass with progressing temperatures. We applied lipid analysis to buried ancient topsoils that contained charred organic matter and to corresponding control soils, which were characterized by a lighter color and lower contents of charred materials. Commonly, the proportion of lipid extracts was found to be lower in the ancient soil than in the control samples, which indicated an enhanced degradation of organic matter, e.g., by thermal degradation. All samples displayed a particular pattern of short-chain and even carbon numbered n-alkanes (maximum at n-C₁₆ or n-C₁₈). The ratios CPI (carbon preference index) and ACL (average chain length) for the investigated soil samples matched the ratios found for maize and rye straw charred at 400 °C or 500 °C, respectively. These molecular ratios indicate the presence of charred biomass. The predominance of short-chain and even carbon numbered n-alkanes was a result of thermal degradation of biomass. The degradation products were preserved in ancient soils and could be applied as molecular markers in archaeological or palaeoenvironmental research.     

Towards the identification of dyestuffs in Early Iron Age Scandinavian peat bog textiles

A large systematic dye investigation of prehistoric Danish and Norwegian bog textiles was carried out using high performance liquid chromatography with photo diode array detection. After the selection of the most suitable protocol for dye extraction and HPLC analysis for this specific group of archaeological samples, the second part included the characterisation of the dyes detected in the whole series of the Early Iron Age textiles and the interpretation of the dyeing technology. Natural organic dyes were found from the three main categories of natural dyes, hence throwing new light on the use of biological dye sources in Early Iron Age Scandinavia. The results clearly indicate that most Scandinavian peat bog textiles originally were dyed and that already during the 1st millennium BC, the populations in Scandinavia were familiar with the dyeing technology.     

关于生与死的探讨与沉思

生与死是一个古老而又沉重的话题。要正确深刻地探讨这个问题,可能条件还不很具备。本人只是想借重前贤的智慧与奇思妙想,沿着他们思维的足迹,作进一步的思考与探索,就灵魂有无的问题,有无因果报应的问题,气与灵的问题,乃至宇宙本体的问题等,表述一些个人的体会与想法。     

The disciplinary politics of antagonistic nationalism in militarized South and North Korea

After the Korean War (1950–53), the two militarized Koreas governed each and every member of society in similar ways through their disciplinary politics of antagonistic nationalism. The existing studies of state formation in the two Koreas have neglected an aspect of state power that was neither necessarily top‐down nor violent from above but also reproduced from below. In both South and North Korea, especially from the 1960s to the 1970s, state power had internal dynamics that penetrated the day‐to‐day activities of most citizens and led them to actively accept and participate in nationalist rule. This article explores an understudied aspect of the two Koreas' state power that was disciplinarily diffused in people's everyday practices through reproduction of aggressive nationalism from below and the organic construction of the individual body and nation.     

The Socio‐Nature of Local Organic Food

Abstract: The concept of socio‐nature asserts that social relations are inherently ecological and that ecological relations are inherently social. This paper examines how, and with what consequences, discourses and practices of support for local and organic food reflect this idea. It argues that proponents of local organic agriculture view the food they promote as simultaneously social and the product of human labor. However, advocates’ understanding of the concept is partial and constrained by social privilege. It does not extend to industrial agriculture or paid farm labor. The literature on socio‐nature coheres around the revelation that what is understood as natural is also social and vice versa. In contrast, this paper takes a new approach, examining socio‐nature as a practice‐shaping discourse already embedded in social life. Investigating the on‐the‐ground ideological work performed by the concept also allows for assessment of its political consequences.     

An Assessment of the Status and Condition of Archaeological Remains Preserved In Situ in the Medieval Town of Trondheim Based on Archeochemical Investigations Conducted During the Period 2007–2010

Abstract

In recent years systematic archeochemical investigations in the medieval town of Trondheim have provided the heritage management authorities with a rich and complex set of data concerning the status and condition of the cultural deposits in the anthropogenic material. The collected data raises important questions for the long-time management of in situ preservation for archaeological material in non-saturated zones. In this paper we present the standardized scientific methods used in these archeochemical investiga- tions. We examine the results from several sites in the town and discuss the challenges facing modern heritage management in its efforts to protect a complex body of archaeological material in the non-saturated zone. We show that sediments with a thickness of 1–2 m have low levels of moisture and organic matter, and most of the inorganic parameters analysed are found in oxidized form with low preservations. The 2–3 m thick anthropogenic sediments showed better preservation conditions.     

Organic Loss in Drained Wetland Monuments: Managing the Carbon Footprint

Abstract

The recent installation of land drains at Star Carr, Yorkshire, UK, has been linked with loss of preservation quality in this important Mesolithic buried landscape, challenging the PARIS principle. Historically captured organic carbon, including organic artefacts, is being converted to soluble organic compounds and less soluble carbon gases. At the same time sulphur and nitrogen compounds are oxidized to species that are chemically destructive of artefacts and ecofacts. Two of the carbon products, CO₂ and methane, are ‘greenhouse gases’ whose environmental impact can be costed in terms of carbon equivalents, which can be set against an assessment of the gain in agricultural productivity of the land arising from drainage, at Star Carr being the improved cereal crop. Wetland studies elsewhere suggest that such decay processes could be slowed by restoring the historic soil environment, and even reversed to create carbon capture, enabling the farmer to claim carbon credits.