国外宗教地理研究回顾与进展

20世纪60年代以来,国外宗教地理研究日益成熟,已成为文化地理学的重要组成部分之一。除传统文化地理学之外,国外宗教地理研究也出现了诸如新文化地理学、宗教生态学、社会学等研究方向;其研究内容也从最初对宗教与地理环境关系的单一研究逐渐趋向多样化,宗教的分布与扩散、宗教文化区和宗教景观研究都得到了充分重视。新文化地理学由于融合了更多跨学科知识,而逐渐在宗教地理研究中占据主流。总体来看,国外宗教地理研究仍处于一个边缘地位,研究的内容和方法体系都有待进一步完善。     

湟中、平安画像砖墓内容和年代考订

在青海省东部的平安县和湟中县 ,于1982年先后发现两处画像砖墓。本文对这两处画像砖墓的发掘过程、结构、造型、艺术风格以及有关的营造年代、画像题材、内容都在实地考查的基础上作了介绍     

水电施工企业的工程项目成本管理

水电施工企业成本管理的重点在于工程项目成本管理。水电工程项目成本管理具有综合性、超前性、全员性、动态性的特点,工程项目必须从目标控制、组织措施、技术措施、经济措施三方面加强成本控制。     

微波技术在砖石质文物含水率检测中的应用

水是造成砖石质文物劣化的主要因素之一,因此探明其在文物内部的分布、运移规律是开展保护研究的重要基础。微波技术在检测材料内部的水分含量方面表现出较好前景,但在文物保护领域还未普遍应用。基于此,本研究首先介绍了微波技术的理论基础和相关仪器,并选取山西省的长春玉皇庙为对象,针对砖石材料的内部含水率开展了室内样块检测和现场墙体检测。结果表明,微波技术能够较为准确地揭示出文物内部的空间含水率分布规律,这对于研究其病害成因等具有重要作用。此外,与其他多种无损检测技术相比,微波技术检测材料含水率的优点更多,值得文物工作者进一步研究与应用。     

泰州水关遗址结构分析及修缮设计

水关是古城墙建筑的一个重要元素,对研究古城墙布局及城市演变具有重要意义。为了对泰州水关遗址进行科学保护,首先通过现场调研,对泰州水关遗址的残损进行分析,找出其可见的病害,包括墙体残损、基础残损、券体残损及木桩残损;然后通过有限元模拟分析其结构性能,找出其隐在的病害,主要是地基和墙体问题。最后,综合残损调研及数值模拟结果,提出了适用于水关遗址的修缮设计方法,包括地基加固、墙体加固以及木桩保护方法。     

文物保护用水溶性氨基树脂的研制

以三聚氰胺、多聚甲醛、尿素、甲醇及聚乙二醇为原料,合成了高分子材料－水溶性三聚氰胺甲醛树脂。本文叙述了该树脂的合成工艺和反应原理及在文物保持应用上的可行性,讨论了反应原料的配比、反应温度、体系的PH值及改性剂聚乙二醇的用量对树脂性能的影响。     

Prehispanic water pressure: A New World first

Ancient cultures have a wide range of water control management techniques, each associated with a particular purpose, including water for consumption, agriculture, flood control, drought relief, and rituals (Scarborough, 2003). One technique that has received limited archaeological attention is the purposeful creation of water pressure to perform useful work. Perhaps the earliest such example was found on the island of Crete in a Minoan palace and dates as early as 1400 BC. Terracotta pipe segments with graded diameter reductions were used to create fountains (Evans, 1921–1935). Although gravity and the weight of water are the most efficient means of generating water pressure in a closed conduit, natural conditions (climate, geology, topographic slope, etc.) that might lead to the construction of water pressure systems are less clear. Here we show that the Classic Maya (AD 250–600) constructed a water pressure system with the potential to control the flow of water within an urban area. By burying a conduit along a steep ephemeral channel passing through a residential group, upland springs could be diverted to build pressure in the conduit to provide a dry-season supply of water. Up to 6 m of hydraulic head could have been recovered to lift water from the pressurized conduit to a point of use. Water pressure systems were previously thought to have entered the New World with the arrival of the Spanish. Yet, archaeological data, seasonal climate conditions, geomorphic setting, and simple hydraulic theory clearly show that the Maya of Palenque in Chiapas, Mexico had empirical knowledge of closed channel water pressure predating the arrival of Europeans.     

Re-evaluating the history of the wheat domestication gene NAM-B1 using historical plant material

The development of agriculture is closely associated with the domestication of wheat, one of the earliest crop species. During domestication key genes underlying traits important to Neolithic agriculture were targeted by selection. One gene believed to be such a domestication gene is NAM-B1, affecting both nutritional quality and yield but with opposite effects. A null mutation, first arisen in emmer wheat, decreases the nutritional quality but delays maturity and increases grain size; previously the ancestral allele was believed lost during the domestication of durum and bread wheat by indirect selection for larger grain. By genotyping 63 historical seed samples originating from the 1862 International Exhibition in London, we found that the ancestral allele was present in two spelt wheat and two bread wheat cultivars widely cultivated at the time. This suggests that fixation of the mutated allele of NAM-B1 in bread wheat, if at all, occurred during modern crop improvement rather than during domestication. We also discuss the value of using archaeological and historical plant material to further the understanding of the development of agriculture.     

New radiometric dating of water management features at the prehistoric Purrón Dam Complex,Tehuacán Valley,Puebla, México

Recent investigations at the prehistoric Purrón Dam Complex in the Tehuacán Valley of southern Puebla, México applied radiometric dating to more securely date the complex. Ceramic-based dating in the 1960′s placed the Dam's origin to the Formative Period. While Formative Period origins are widely accepted, the chronology lacks resolution and direct dates. Samples from impounded sediments behind the dam and from prehistoric canal fill were dated through Optically Stimulated Luminescence (OSL) as well as both standard ¹⁴C and accelerated mass spectrometry (AMS) assays. These samples directly date the functioning of the water management features within the complex. The results confirm the Formative Period origins of the Purrón Dam, and offer new insights into the construction and functioning of the dam and irrigation system.     

邴法敬造像碑研究

邴法敬造像碑是中国现存造像碑中十分罕见的隋代造像珍品,其名见于志书和一些专业文章,但仅是涉及部分信息,对造像题材和题记均未有完整详细的资料公布。该文对造像内容全面详细的介绍,并对其造像题材和艺术风格进行了初步研究。