城镇可持续生活供水价格研究--以陕西省关中地区为例

本分析了关中地区城镇生活水价现状和问题,得出了城镇生活水价是不可持续的结论,即水价低于供水生产成本,水价结构不合理。在探讨可持续水价的调整原则的基础上,提出了价格杠杆调节关中生活水价的措施,包括：逐步把水价调整到成本水价以上的水平,并调整水价结构,使之能反映供水成本和水资源价值;实行累进加价制度,对超定额用水征收高水价;实施季节性水价等。     

Growth estimations in settlement planning using a land use cellular automata model (LUCAM)

This article describes the main features of a Land Use Cellular Automata Model (LUCAM) developed within the scope a Ph.D. thesis by using both physical and socio‐economic data and on the basis of the relationships between the smallest cellular function and other functions that vary according to the fractal structure of settlements. An assessment of the research findings is also included. The article has five sections: Following the introduction, the evolution of land use models, in particular Cellular Automata (CA) based land use models, is described. Then, the main features of LUCAM are presented, and the basics of the criteria used in determining the model parameters is described. The model developed, which can easily be used in computer environments, aims to minimize the calculation time in growth estimation processes, and thus become a widely used tool. In this article, the model was applied to the settlement of Bursa (Turkey), and the results obtained were assessed. The conclusion section offers general guidelines on the use of the model and discusses the advantages of employing the model in CA based studies that are likely to emerge in the future.     

1939年秋-1940年夏国民党的南调命令及其影响——对皖南事变起源的新分析

抗战初期的南调命令是国民党在发展和维护它的华中敌后利益,尤其是大别山根据地利益的过程中提出来的.由于抗战的新形势,国民党对在失去大举"剿共"手段之后的策略选择和反共部署,其实并没有多少及时而深入的考虑,尤其因为共产国际五月指示以来共产党在华中采取攻势策略,国民党更显缺乏心理和策略准备,南调命令最终在国民党内外重重阻力下不了了之.但是,这并不意味着它在国共关系史上没有产生实际的影响.在皖南,国共都因为南调命令而发生了策略变化,两党由此不可避免地开始积累矛盾,直至事变发生.     

《维摩演教图》及其相关问题讨论

《维摩演教图》是宋人师承李公麟的白描人物画。作者经过对比分析,认为此图不是金马云卿的《画维摩不二图》。而关于王振鹏《临马云卿画维摩不二图》也存在诸多疑问,它或许是曾经元内府收藏、清《秘殿珠林初编》著录的李公麟《画维摩不二图》卷的临摹本。     

元代汤垕生平之考证

本文主要目的为重新对元代初期之书画鉴赏家及收藏家汤生平之考证及与其同时文人往来之情形。因此,本文除了藉用地方志、文集、诗集及书画题跋等为佐证之外,同时也将汤父亲汤炳龙之背景,与其他宋末元初文人、画家之交往,及对汤仕途之影响作进一步研究。本论文之结论则定汤约生于1250年代中期,而卒于1310年代中期;乃确定汤活跃于元代初期,且旅居杭州多年,最后移居且卒于北京。汤撰有二书,现仅存《画鉴》一书。此书对了解元初绘画发展及收藏品味具有重要贡献。     

纳他霉素在丝织品上的抑菌实验研究

为了筛选出能用于丝织品文物防霉且对人、环境安全的生物代谢产物,选用目前在国际上得到广泛认可的安全性防霉剂纳他霉素,在一定的光照条件下,采用抑菌圈法对现代天然丝织品材料进行了防霉试验。结果表明,无论是否以乳酸链球菌素作为助剂,500μg/g(以有效成分计)纳他霉素在丝织品上防黑曲霉、青霉、毛霉效果明显。纳他霉素对白色丝织品的色泽和机械强度无破坏性影响。纳他霉素在丝织品文物防霉上有应用前景。     

Wild or domesticated: DNA analysis of ancient water buffalo remains from north China

Recent zooarchaeological studies on water buffalo (Bubalus sp.) remains from China and south Asia question the traditional view that water buffalo were first domesticated in Neolithic China over 7000 years ago. The results from several recent population genetic studies of modern domesticated buffalo (Bubalus bubalis) are not consistent with each other, placing the original center of buffalo's domestication in south Asia, southeast Asia, or China. This paper reports a study using an ancient DNA approach to analyze water buffalo remains from Neolithic sites in north China to investigate their affinities with modern domesticated water buffalo, and to shed light on the origin of modern domesticated water buffalo in China.A 169 bp fragment of D-loop mitochondrial DNA was successfully amplified and verified for 13 of 24 bone samples obtained from seven archaeological sites along the Wei River valley in Shaanxi Province, China. The bone samples which yielded positive DNA can be dated to 8000–3600 cal. BP. The phylogenetic analysis of the obtained DNA sequences along with modern water buffalo sequences indicated that the ancient water buffalos were not the direct ancestor of modern domesticated water buffalo. However, the phylogenetic analysis, along with BLAST searches of these ancient DNA sequences, did demonstrate their relatedness to water buffalo more so than to any other bovid species, confirming the existence of indigenous wild (but now extinct) water buffalo species (B. mephistopheles) in ancient China.The DNA analysis of these ancient remains failed to establish direct links between modern domesticated water buffalo (B. bubalis) and indigenous water buffalo (B. mephistopheles) from ancient China. If further DNA studies of more ancient remains from other regions of China confirm the observation of solely indigenous water buffalo species in ancient China, it would suggest modern water buffalo might not have been first domesticated in China.     

Morphological taphonomic transformations of fossil bones in continental environments,and repercussions on their chemical composition

The aim of this paper is to provide a summary of structural or surface modifications of vertebrate bone remains in continental palaeoenvironments that may have repercussions on their chemical composition. Both before and after burial, a different set of physical, chemical and biological agencies may produce modifications of the bone morphological structure and/or bone chemical composition. Several of these morphological modifications are diagnostic of particular agents, which otherwise may not be noticed or identified in a fossil association. In order to understand diagenesis, those events that occurred before final burial have to be considered, as they may strongly modify the bone morphological structure and influence post–burial changes.     

Reconstructing subsistence at the Yingpanshan and Gaoshan sites in Sichuan province,China: Insights from isotope analysis on bone samples and charred crop remains

During the Neolithic period, the Chengdu Plain was a key region where two important crops, rice and millet, were cultivated together. Millet was probably introduced from north-western China c.3500–3300 cal. bce , and rice came from the Middle Yangtze River c.2600 cal. bce . In this study, human and faunal remains, as well as charred crop grains, were collected from the Yingpanshan (3300–2600 cal. bce ) and Gaoshan (2500–2000 cal. bce ) sites where the dominant crop was millet and rice, respectively. Carbon and nitrogen isotope analyses were conducted on human bones and the ecofact samples in order to reconstruct the subsistence at the sites. The results indicate that the diets of two individuals recovered from the Yingpanshan site consisted of both C₃- and C₄-based foods, predominantly the former. By contrast, Yingpanshan pigs consumed a large quantity of C₄ fodder. This result, combined with the ecofact evidence, suggests that millet was the main crop at the Yingpanshan site. It also highlights the fact that the two Yingpanshan individuals might be non-locals and/or belonged to later periods. On the other hand, the diet of the Gaoshan community was dominated by C₃-based foods. When considering the archaeobotanical evidence at Baodun, a site contemporaneous with and near to the Gaoshan site, it can be stated that rice was an important food resource for the Gaoshan community. This study also suggests how crops were managed at the two sites. The Yingpanshan people might have used manure for growing millet. Both manuring and irrigation might have also been practised by Gaoshan's rice farmers. However, more studies are required to understand the extent of manuring and irrigation in their agricultural economies.