广州南越国宫署遗址东晋南朝的铁甲和皮甲

2004～2006年,广州市文物考古研究所、中国社会科学院考古研究所和南越王宫博物馆筹建处组成的考古队在南越国宫署遗址的两口水井内清理出东晋南朝时期的铁甲和皮甲各1件,铁甲有53片形状不同的甲片,皮甲应为马甲上的胸甲。这类铠甲的出土在岭南属首次发现,同时也填补了这一时期铠甲资料的欠缺。     

Structural Assessment of Companhia Aurífícia,a 19th Century Industrial Building Located in Northern Portugal

Companhia Aurifícia is located in Porto, Portugal, and was founded in 1864. It was a pioneer factory in the industrial production, casting, rolling, and stamping of metallic objects and laboured for about 150 years, in areas as jewelry, manufacture of parts in silver and gold or the production, and casting of various metals. In 1866, it began laboring in Rua dos Bragas, its present location, and in 2003 ceased all activities.Companhia Aurifícia is an industrial complex including several buildings, all located in the same block. It is a precious example of the industrial architecture in Porto, where the still existent retaining walls, structures, machinery, and decorative elements make it one of the last examples of 19^th century industrial life of the city.This article aims to evaluate the safety condition of one of the buildings included in this industrial complex, in order to propose the necessary strengthening interventions.     

Marked occupational dental abrasion from medieval Kent

A medieval male skeleton displays marked dental abrasion which is considered to be occupational, possible related to carpentry. Copyright © 2003 John Wiley & Sons, Ltd.     

近代朝鲜华侨制造业研究——以铸造业为中心

以朝鲜殖民地时期华侨制造业中最具代表性的铸造业作为研究对象,对华侨铸造工厂诞生的背景、同乡网络及其生产体制进行了阐述;分析了华侨制造业在朝鲜烧锅制造领域里取得垄断性地位的原因,一是华侨铸造工厂里中国劳动者较低的工资及技术开发的进行;二是全国的华侨铸造工厂形成了以河北省交河县为中心的同乡网络并进行协力合作。中日战争爆发后,日本政府谋求战时经济的强化,朝鲜总督府也加强了战时统治经济,生铁原料的配给发生困难,华侨铸造工厂因而纷纷倒闭,走向衰退。     

A preliminary study on the role and implication of plate-type iron artifacts in the ancient iron technology of Korea

Special iron objects in the form of a narrow plate with a fan-shaped blade on one or both ends, but with a substantial variation in shape and size, have continually been excavated from ancient historical sites located in the southern part of the Korean peninsula. The frequency and abundance of their excavation imply that they must have played a crucial role in the initial shaping of the Korean iron industry. Little is known, however, of their intended purposes or the exact engineering processes applied in their production. Speculation suggests that they might have been used as currencies or intermediate materials for the making of finished products. This study examined the microstructures of three such iron objects from the Korean Three Kingdoms Period (ca. 300–600 AD). It was determined that they were made of low carbon iron generally containing a number of non-metallic inclusions, with hints of surface carburization particularly at the ends of the plates. These results reveal the likely presence of an iron technology based primarily on the bloomery technique as opposed to the Chinese style of iron-making based on cast iron technology, which was also in use in ancient Korea.     

Internal oxidation of cast iron artifacts from an 18th-century steel cementation furnace

Heavily corroded metal artifacts recovered from the site of an 18th-century steel cementation furnace in Trenton, New Jersey, are cast iron altered by internal oxidation. The progress of the internal oxidation process was followed by comparison with the microstructure of cast iron exposed to high temperature in a wood-burning fireplace. The graphite flake structure of the cast iron allows deep, rapid penetration of oxygen that reacts at the iron–carbon interfaces within the iron to form iron oxides that eventually replace the graphite flakes. Microprobe analyses show that the silicon in the cast iron is converted to knebelite that also serves as the host for phosphorus. Sulfur dispersed in the internal oxidation product and porosity appear to be responsible for rapid rusting of the artifacts. Internal nitriding accompanies the oxidation. The Trenton artifacts are interpreted as grate bars from the fire box of a cementation furnace.     

南阳春秋彭射墓出土青铜兵器初探

南阳春秋彭射墓出土兵器中包括有铁援铜戈、铜铍、铜殳、锥形铜镞等少见器物,在同期墓葬中并不常见。其中铁援铜戈的制作工艺与前期同类器物有着一脉相承的工艺技术。出土的铜殳和铜铍皆为春秋时期同类器物中的较早类型,又有所区别,有着地域性特征。圆锥头形铜镞镂空的装饰手法在同类镞中也较为罕见。这些青铜兵器含有较多楚文化风格,但也不乏淮河上游地区文化因素。     

Joint controlled fluid flow patterns and iron mass transfer in Jurassic Navajo Sandstone,Southern Utah,USA

The Jurassic Navajo Sandstone of Grand Staircase Escalante National Monument (GSENM), Utah, exhibits a broad range of iron oxide/oxyhydroxide concretionary geometries that record a complex paragenetic history of the reservoir. The concretionary geometries are as follows: (i) common macroconcretions (>5 mm in diameter), (ii) ubiquitous microconcretions (<5 mm in diameter), (iii) localized iron oxide/oxyhydroxide‐lined northeast‐striking joints, and (iv) loopy asymmetrical mineralization and banded precipitation patterns (Liesegang bands) associated with the joints. Spheroidal concretion geometries typically indicate diffusive mass transfer, whereas asymmetrical mineralization represents advective directional flow. Liesegang bands parallel to asymmetrical mineralization denote a diffusive mass transfer component perpendicular to the principal flow direction. Careful study of concretionary geometries and their cross‐cutting relationships establishes a relative timing of precipitation and mobilization events. Macroconcretions formed post‐Laramide (<55 Ma), prior to and independent of the Miocene joints. The joints provided conduits for later oxidizing fluids that precipitated iron oxide/oxyhydroxide lining on the joint faces. Advective mass transfer overprinted the area with preferentially cemented flow lines (asymmetrical mineralization) less than 10 Ma, coincident with development of a hydraulic low to the southeast of the region (Colorado River downcutting). Certain trace elements are genetically tied to concretion formation, and evaluation of trace elements establishes precursor mineral phases. Enriched uranium concentrations in concretions (relative to the host rock) and low/undetectable sulfur concentrations in both host rock and concretions suggest that iron oxyhydroxide was a primary precipitate rather than a reduced iron mineral (i.e., pyrite or siderite) that later oxidized. Enrichment of Ni and As in concretions functions as fingerprints for diagenetic concretion formation when determining genesis of ambiguous iron oxide/oxyhydroxide spherules such as the remotely sensed ‘blueberries’ on Mars. Similarities between Mars and Utah spherules such as geometry, in situ spacing and volumetric density suggest that Mars spherules precipitated via a geochemically self‐organized nucleation pattern in diffusive chemical reaction fronts.     

Iron knees in wooden vessels—an attempt at a typology

Knees were brackets in the structure of a wooden ship. They were introduced in the second half of the 18th century and were in common use for naval and merchant ships in the 19th century. They were fashioned in various designs. A typology of these is proposed based on archaeological and documentary evidence. Iron knees could used to assist the dating of unidentified shipwrecks.     

氯离子选择性电极测定铁器碱性脱盐溶液中 氯离子的含量

在铁质文物的保护过程中,脱盐是重要的保护程序之一。通常铁器的脱盐溶液为碱性。本工作主要研究氯离子选择性电极法在测定碱性脱盐溶液中的氯离子含量时,溶液pH值和复配溶液中的表面活性剂对测定结果的影响。实验结果表明:(1)用氯离子选择性电极法测定碱性脱盐溶液或复配碱性脱盐溶液中的氯离子浓度是可行的;(2)溶液的pH值对测量结果有一定的影响,当溶液pH值在2～7范围内时,其对电位值影响不大;(3)表面活性剂对测量结果影响较小,在实际应用中,应配制与待测溶液组分相同的氯离子标准溶液,后期数据处理并绘制标准曲线,以使测量结果尽可能接近实际值。精密度和回收率实验表明,该方法准确度满足定量分析的要求。由此可见,当脱盐溶液为碱性NaOH或复配碱性NaOH溶液时,用氯离子选择性电极实时监测脱盐溶液中的氯离子含量能较好地反映器物脱盐程度。